

<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.pixelworks.com/20151231" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:pxlw="http://www.pixelworks.com/20151231" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:import namespace="http://fasb.org/us-gaap/2015-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-roles/2015-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2015/elts/us-roles-2015-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-types/2015-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2015/elts/us-types-2015-01-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/net" schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" />
  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/country/2013-01-31" schemaLocation="http://xbrl.sec.gov/country/2013/country-2013-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/currency/2014-01-31" schemaLocation="http://xbrl.sec.gov/currency/2014/currency-2014-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2014-01-31" schemaLocation="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/exch/2015-01-31" schemaLocation="http://xbrl.sec.gov/exch/2015/exch-2015-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/invest/2013-01-31" schemaLocation="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/naics/2011-01-31" schemaLocation="http://xbrl.sec.gov/naics/2011/naics-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/sic/2011-01-31" schemaLocation="http://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/stpr/2011-01-31" schemaLocation="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd" />
  <xsd:annotation>
    <xsd:appinfo>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="pxlw-20151231_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="pxlw-20151231_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="pxlw-20151231_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="pxlw-20151231_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple" />
      <link:roleType id="BalanceSheetComponents" roleURI="http://www.pixelworks.com/role/BalanceSheetComponents">
        <link:definition>2107100 - Disclosure - Balance Sheet Components</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BalanceSheetComponentsAccountsReceivableDetails" roleURI="http://www.pixelworks.com/role/BalanceSheetComponentsAccountsReceivableDetails">
        <link:definition>2407402 - Disclosure - Balance Sheet Components (Accounts Receivable) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BalanceSheetComponentsAccruedLiabilitiesAndCurrentPortionOfLongTermLiabilitiesDetails" roleURI="http://www.pixelworks.com/role/BalanceSheetComponentsAccruedLiabilitiesAndCurrentPortionOfLongTermLiabilitiesDetails">
        <link:definition>2407409 - Disclosure - Balance Sheet Components (Accrued Liabilities and Current Portion of Long-Term Liabilities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BalanceSheetComponentsAllowanceForDoubtfulAccountsDetails" roleURI="http://www.pixelworks.com/role/BalanceSheetComponentsAllowanceForDoubtfulAccountsDetails">
        <link:definition>2407403 - Disclosure - Balance Sheet Components (Allowance for Doubtful Accounts) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BalanceSheetComponentsInventoriesDetails" roleURI="http://www.pixelworks.com/role/BalanceSheetComponentsInventoriesDetails">
        <link:definition>2407404 - Disclosure - Balance Sheet Components (Inventories) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BalanceSheetComponentsInventoriesNarrativeDetails" roleURI="http://www.pixelworks.com/role/BalanceSheetComponentsInventoriesNarrativeDetails">
        <link:definition>2407405 - Disclosure - Balance Sheet Components (Inventories) (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BalanceSheetComponentsOtherAssetsNetNarrativeDetails" roleURI="http://www.pixelworks.com/role/BalanceSheetComponentsOtherAssetsNetNarrativeDetails">
        <link:definition>2407408 - Disclosure - Balance Sheet Components (Other Assets, Net) (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BalanceSheetComponentsPropertyAndEquipmentDetails" roleURI="http://www.pixelworks.com/role/BalanceSheetComponentsPropertyAndEquipmentDetails">
        <link:definition>2407406 - Disclosure - Balance Sheet Components (Property and Equipment) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BalanceSheetComponentsPropertyAndEquipmentNarrativeDetails" roleURI="http://www.pixelworks.com/role/BalanceSheetComponentsPropertyAndEquipmentNarrativeDetails">
        <link:definition>2407407 - Disclosure - Balance Sheet Components (Property and Equipment) (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BalanceSheetComponentsReserveForWarrantyReturnsDetails" roleURI="http://www.pixelworks.com/role/BalanceSheetComponentsReserveForWarrantyReturnsDetails">
        <link:definition>2407410 - Disclosure - Balance Sheet Components (Reserve for Warranty Returns) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BalanceSheetComponentsShortTermLineOfCreditNarrativeDetails" roleURI="http://www.pixelworks.com/role/BalanceSheetComponentsShortTermLineOfCreditNarrativeDetails">
        <link:definition>2407411 - Disclosure - Balance Sheet Components (Short-Term Line of Credit) (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BalanceSheetComponentsTables" roleURI="http://www.pixelworks.com/role/BalanceSheetComponentsTables">
        <link:definition>2307301 - Disclosure - Balance Sheet Components (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasisOfPresentation" roleURI="http://www.pixelworks.com/role/BasisOfPresentation">
        <link:definition>2101100 - Disclosure - Basis of Presentation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasisOfPresentationDetails" roleURI="http://www.pixelworks.com/role/BasisOfPresentationDetails">
        <link:definition>2401401 - Disclosure - Basis of Presentation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingencies" roleURI="http://www.pixelworks.com/role/CommitmentsAndContingencies">
        <link:definition>2119100 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingenciesFutureMinimumPaymentsDetails" roleURI="http://www.pixelworks.com/role/CommitmentsAndContingenciesFutureMinimumPaymentsDetails">
        <link:definition>2419403 - Disclosure - Commitments and Contingencies (Future Minimum Payments) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingenciesFutureMinimumPaymentsDetailsCalc2" roleURI="http://www.pixelworks.com/role/CommitmentsAndContingenciesFutureMinimumPaymentsDetailsCalc2">
        <link:definition>2419403 - Disclosure - Commitments and Contingencies (Future Minimum Payments) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingenciesLeasesNarrativeDetails" roleURI="http://www.pixelworks.com/role/CommitmentsAndContingenciesLeasesNarrativeDetails">
        <link:definition>2419404 - Disclosure - Commitments and Contingencies (Leases) (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingenciesRoyaltiesNarrativeDetails" roleURI="http://www.pixelworks.com/role/CommitmentsAndContingenciesRoyaltiesNarrativeDetails">
        <link:definition>2419402 - Disclosure - Commitments and Contingencies (Royalties) (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingenciesTables" roleURI="http://www.pixelworks.com/role/CommitmentsAndContingenciesTables">
        <link:definition>2319301 - Disclosure - Commitments and Contingencies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheets" roleURI="http://www.pixelworks.com/role/ConsolidatedBalanceSheets">
        <link:definition>1001000 - Statement - Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheetsParenthetical" roleURI="http://www.pixelworks.com/role/ConsolidatedBalanceSheetsParenthetical">
        <link:definition>1001501 - Statement - Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementOfComprehensiveLoss" roleURI="http://www.pixelworks.com/role/ConsolidatedStatementOfComprehensiveLoss">
        <link:definition>1003000 - Statement - Consolidated Statement of Comprehensive Loss</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfCashFlows" roleURI="http://www.pixelworks.com/role/ConsolidatedStatementsOfCashFlows">
        <link:definition>1004000 - Statement - Consolidated Statements of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfOperations" roleURI="http://www.pixelworks.com/role/ConsolidatedStatementsOfOperations">
        <link:definition>1002000 - Statement - Consolidated Statements of Operations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfOperationsParenthetical" roleURI="http://www.pixelworks.com/role/ConsolidatedStatementsOfOperationsParenthetical">
        <link:definition>1002501 - Statement - Consolidated Statements of Operations (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfShareholdersEquity" roleURI="http://www.pixelworks.com/role/ConsolidatedStatementsOfShareholdersEquity">
        <link:definition>1005000 - Statement - Consolidated Statements of Shareholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfShareholdersEquityParenthetical" roleURI="http://www.pixelworks.com/role/ConsolidatedStatementsOfShareholdersEquityParenthetical">
        <link:definition>1005001 - Statement - Consolidated Statements of Shareholders' Equity (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DocumentAndEntityInformationDocument" roleURI="http://www.pixelworks.com/role/DocumentAndEntityInformationDocument">
        <link:definition>0001000 - Document - Document and Entity Information Document</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShare" roleURI="http://www.pixelworks.com/role/EarningsPerShare">
        <link:definition>2122100 - Disclosure - Earnings Per Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShareAntidilutiveEffectOnWeightedAverageSharesDetails" roleURI="http://www.pixelworks.com/role/EarningsPerShareAntidilutiveEffectOnWeightedAverageSharesDetails">
        <link:definition>2422403 - Disclosure - Earnings Per Share (Antidilutive Effect on Weighted Average Shares) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShareEarningsPerShareDetails" roleURI="http://www.pixelworks.com/role/EarningsPerShareEarningsPerShareDetails">
        <link:definition>2422402 - Disclosure - Earnings Per Share (Earnings Per Share) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShareTables" roleURI="http://www.pixelworks.com/role/EarningsPerShareTables">
        <link:definition>2322301 - Disclosure - Earnings Per Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurements" roleURI="http://www.pixelworks.com/role/FairValueMeasurements">
        <link:definition>2110100 - Disclosure - Fair Value Measurements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsFairValueMeasurementsDetails" roleURI="http://www.pixelworks.com/role/FairValueMeasurementsFairValueMeasurementsDetails">
        <link:definition>2410402 - Disclosure - Fair Value Measurements (Fair Value Measurements) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsTables" roleURI="http://www.pixelworks.com/role/FairValueMeasurementsTables">
        <link:definition>2310301 - Disclosure - Fair Value Measurements (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxes" roleURI="http://www.pixelworks.com/role/IncomeTaxes">
        <link:definition>2116100 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesDeferredTaxAssetsLiabilitiesAndValuationAllowanceDetails" roleURI="http://www.pixelworks.com/role/IncomeTaxesDeferredTaxAssetsLiabilitiesAndValuationAllowanceDetails">
        <link:definition>2416405 - Disclosure - Income Taxes (Deferred Tax Assets, Liabilities and Valuation Allowance) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesDeferredTaxAssetsLiabilitiesAndValuationAllowanceNarrativeDetails" roleURI="http://www.pixelworks.com/role/IncomeTaxesDeferredTaxAssetsLiabilitiesAndValuationAllowanceNarrativeDetails">
        <link:definition>2416406 - Disclosure - Income Taxes (Deferred Tax Assets, Liabilities and Valuation Allowance) (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesDomesticAndForeignPreTaxIncomeLossDetails" roleURI="http://www.pixelworks.com/role/IncomeTaxesDomesticAndForeignPreTaxIncomeLossDetails">
        <link:definition>2416402 - Disclosure - Income Taxes (Domestic and Foreign Pre-Tax Income (Loss)) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesIncomeTaxExpenseBenefitDetails" roleURI="http://www.pixelworks.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetails">
        <link:definition>2416403 - Disclosure - Income Taxes (Income Tax Expense (Benefit)) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesNetOperatingLossCarryforwardsAndTaxCreditsNarrativeDetails" roleURI="http://www.pixelworks.com/role/IncomeTaxesNetOperatingLossCarryforwardsAndTaxCreditsNarrativeDetails">
        <link:definition>2416407 - Disclosure - Income Taxes (Net Operating Loss Carryforwards and Tax Credits) (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesReconciliationOfUSFederalStatuatoryRateToOurEffectiveRateDetails" roleURI="http://www.pixelworks.com/role/IncomeTaxesReconciliationOfUSFederalStatuatoryRateToOurEffectiveRateDetails">
        <link:definition>2416404 - Disclosure - Income Taxes (Reconciliation of U.S. Federal Statuatory Rate to our Effective Rate) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesTables" roleURI="http://www.pixelworks.com/role/IncomeTaxesTables">
        <link:definition>2316301 - Disclosure - Income Taxes (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesUncertainTaxPositionsDetails" roleURI="http://www.pixelworks.com/role/IncomeTaxesUncertainTaxPositionsDetails">
        <link:definition>2416408 - Disclosure - Income Taxes (Uncertain Tax Positions) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesUncertainTaxPositionsNarrativeDetails" roleURI="http://www.pixelworks.com/role/IncomeTaxesUncertainTaxPositionsNarrativeDetails">
        <link:definition>2416409 - Disclosure - Income Taxes (Uncertain Tax Positions) (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="QuarterlyFinancialDataUnaudited" roleURI="http://www.pixelworks.com/role/QuarterlyFinancialDataUnaudited">
        <link:definition>2134100 - Disclosure - Quarterly Financial Data (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="QuarterlyFinancialDataUnauditedDetails" roleURI="http://www.pixelworks.com/role/QuarterlyFinancialDataUnauditedDetails">
        <link:definition>2434402 - Disclosure - Quarterly Financial Data (Unaudited) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="QuarterlyFinancialDataUnauditedTables" roleURI="http://www.pixelworks.com/role/QuarterlyFinancialDataUnauditedTables">
        <link:definition>2334301 - Disclosure - Quarterly Financial Data (Unaudited) (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformation" roleURI="http://www.pixelworks.com/role/SegmentInformation">
        <link:definition>2131100 - Disclosure - Segment Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationAccountsReceivableByMajorCustomerDetails" roleURI="http://www.pixelworks.com/role/SegmentInformationAccountsReceivableByMajorCustomerDetails">
        <link:definition>2431404 - Disclosure - Segment Information (Accounts Receivable by Major Customer) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationGeographicInformationDetails" roleURI="http://www.pixelworks.com/role/SegmentInformationGeographicInformationDetails">
        <link:definition>2431402 - Disclosure - Segment Information (Geographic Information) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationScheduleOfRevenueByMajorCustomerDetails" roleURI="http://www.pixelworks.com/role/SegmentInformationScheduleOfRevenueByMajorCustomerDetails">
        <link:definition>2431403 - Disclosure - Segment Information (Schedule of Revenue by Major Customer) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationTables" roleURI="http://www.pixelworks.com/role/SegmentInformationTables">
        <link:definition>2331301 - Disclosure - Segment Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquity" roleURI="http://www.pixelworks.com/role/ShareholdersEquity">
        <link:definition>2128100 - Disclosure - Shareholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityEmployeeStockPurchasePlansNarrativeDetails" roleURI="http://www.pixelworks.com/role/ShareholdersEquityEmployeeStockPurchasePlansNarrativeDetails">
        <link:definition>2428409 - Disclosure - Shareholders' Equity (Employee Stock Purchase Plans) (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityOptionsVestedAndExpectedToVestAsOfDecember312014Details" roleURI="http://www.pixelworks.com/role/ShareholdersEquityOptionsVestedAndExpectedToVestAsOfDecember312014Details">
        <link:definition>2428406 - Disclosure - Shareholders' Equity (Options Vested and Expected to Vest as of December 31, 2014) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityRestrictedStockNarrativeDetails" roleURI="http://www.pixelworks.com/role/ShareholdersEquityRestrictedStockNarrativeDetails">
        <link:definition>2428407 - Disclosure - Shareholders' Equity (Restricted Stock) (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsDetails" roleURI="http://www.pixelworks.com/role/ShareholdersEquityScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsDetails">
        <link:definition>2428410 - Disclosure - Shareholders' Equity (Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityScheduleOfSharesAuthorizedUnderEquityCompensationPlansByExercisePriceDetails" roleURI="http://www.pixelworks.com/role/ShareholdersEquityScheduleOfSharesAuthorizedUnderEquityCompensationPlansByExercisePriceDetails">
        <link:definition>2428405 - Disclosure - Shareholders' Equity (Schedule of Shares Authorized Under Equity Compensation Plans, By Exercise Price) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityShareholdersEquityNarrativeDetails" roleURI="http://www.pixelworks.com/role/ShareholdersEquityShareholdersEquityNarrativeDetails">
        <link:definition>2428402 - Disclosure - Shareholders' Equity (Shareholders' Equity) (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityStockBasedCompensationExpenseNarrativeDetails" roleURI="http://www.pixelworks.com/role/ShareholdersEquityStockBasedCompensationExpenseNarrativeDetails">
        <link:definition>2428411 - Disclosure - Shareholders' Equity (Stock-based Compensation Expense) (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityStockOptionsActivityRollForwardDetails" roleURI="http://www.pixelworks.com/role/ShareholdersEquityStockOptionsActivityRollForwardDetails">
        <link:definition>2428404 - Disclosure - Shareholders' Equity (Stock Options Activity Roll-forward) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityStockOptionsNarrativeDetails" roleURI="http://www.pixelworks.com/role/ShareholdersEquityStockOptionsNarrativeDetails">
        <link:definition>2428403 - Disclosure - Shareholders' Equity (Stock Options) (Narrative) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityTables" roleURI="http://www.pixelworks.com/role/ShareholdersEquityTables">
        <link:definition>2328301 - Disclosure - Shareholders' Equity (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityUnvestedRestrictedStockUnitsActivityRollForwardDetails" roleURI="http://www.pixelworks.com/role/ShareholdersEquityUnvestedRestrictedStockUnitsActivityRollForwardDetails">
        <link:definition>2428408 - Disclosure - Shareholders' Equity (Unvested Restricted Stock Units Activity Roll-Forward) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEventsDetails" roleURI="http://www.pixelworks.com/role/SubsequentEventsDetails">
        <link:definition>2435402 - Disclosure - Subsequent Events (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEventsNotes" roleURI="http://www.pixelworks.com/role/SubsequentEventsNotes">
        <link:definition>2135100 - Disclosure - Subsequent Events (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEventsTables" roleURI="http://www.pixelworks.com/role/SubsequentEventsTables">
        <link:definition>2335301 - Disclosure - Subsequent Events (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPolicies" roleURI="http://www.pixelworks.com/role/SummaryOfSignificantAccountingPolicies">
        <link:definition>2104100 - Disclosure - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesAccumulatedOtherComprehensiveIncomeLossDetails" roleURI="http://www.pixelworks.com/role/SummaryOfSignificantAccountingPoliciesAccumulatedOtherComprehensiveIncomeLossDetails">
        <link:definition>2404406 - Disclosure - Summary of Significant Accounting Policies (Accumulated Other Comprehensive Income (Loss)) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesCashAndCashEquivalentsDetails" roleURI="http://www.pixelworks.com/role/SummaryOfSignificantAccountingPoliciesCashAndCashEquivalentsDetails">
        <link:definition>2404403 - Disclosure - Summary of Significant Accounting Policies (Cash and cash equivalents) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesLicensedTechnologyDetails" roleURI="http://www.pixelworks.com/role/SummaryOfSignificantAccountingPoliciesLicensedTechnologyDetails">
        <link:definition>2404405 - Disclosure - Summary of Significant Accounting Policies (Licensed Technology) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesPolicies" roleURI="http://www.pixelworks.com/role/SummaryOfSignificantAccountingPoliciesPolicies">
        <link:definition>2204201 - Disclosure - Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesPropertyAndEquipmentDetails" roleURI="http://www.pixelworks.com/role/SummaryOfSignificantAccountingPoliciesPropertyAndEquipmentDetails">
        <link:definition>2404404 - Disclosure - Summary of Significant Accounting Policies (Property and equipment) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesTables" roleURI="http://www.pixelworks.com/role/SummaryOfSignificantAccountingPoliciesTables">
        <link:definition>2304302 - Disclosure - Summary of Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element abstract="true" id="pxlw_A0.6015.51Member" name="A0.6015.51Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_A0.602.01Member" name="A0.602.01Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_A2.082.36Member" name="A2.082.36Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_A2.373.15Member" name="A2.373.15Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_A2010EmployeeStockPurchasePlanMember" name="A2010EmployeeStockPurchasePlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_A3.214.44Member" name="A3.214.44Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_A4.5215.51Member" name="A4.5215.51Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_AccountBMember" name="AccountBMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_AccountCMember" name="AccountCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_AccountMember" name="AccountMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_AccruedCommisionsAndRoyaltiesCurrent" name="AccruedCommisionsAndRoyaltiesCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pxlw_AllDistributorsMember" name="AllDistributorsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_BalanceSheetComponentsTextBlock" name="BalanceSheetComponentsTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_BorrowingTermsForNonFormulaAdvances" name="BorrowingTermsForNonFormulaAdvances" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_ChangeInLiabiliyForUncertainTaxPositionsAndInterestAndPenaltiesTable" name="ChangeInLiabiliyForUncertainTaxPositionsAndInterestAndPenaltiesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_DeferredTaxAssetsPropertyAndEquipment" name="DeferredTaxAssetsPropertyAndEquipment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pxlw_DistributorBMember" name="DistributorBMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_DistributorMember" name="DistributorMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_EmployeeEquityIncentivePlansNewAuthorizedSharesDuringPeriod" name="EmployeeEquityIncentivePlansNewAuthorizedSharesDuringPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_EmployeeStockPurchasePlanActivityInPeriodLineItems" name="EmployeeStockPurchasePlanActivityInPeriodLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_EmployeeStockPurchasePlanAxis" name="EmployeeStockPurchasePlanAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_EmployeeStockPurchasePlanDomain" name="EmployeeStockPurchasePlanDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_EmployeeStockPurchasePlansProceedsFromIssuanceOfCommonStock" name="EmployeeStockPurchasePlansProceedsFromIssuanceOfCommonStock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_EmployeeStockPurchasePlansSharesIssuedAndProceedsReceivedTable" name="EmployeeStockPurchasePlansSharesIssuedAndProceedsReceivedTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_EndCustomerBMember" name="EndCustomerBMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_EndCustomerCMember" name="EndCustomerCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_EndCustomerDMember" name="EndCustomerDMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_EndCustomerMember" name="EndCustomerMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_EquityIssuanceSharePrice" name="EquityIssuanceSharePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_FixedAssetAndOtherAssetExpensesIncurredButNotYetPaid" name="FixedAssetAndOtherAssetExpensesIncurredButNotYetPaid" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_GeographicalRegionOtherMember" name="GeographicalRegionOtherMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_IncomeTaxHolidayReducedStatutoryRate" name="IncomeTaxHolidayReducedStatutoryRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_IncomeTaxReconciliationIncomeTaxExpenseBenefitExpirationOfTaxAttributes" name="IncomeTaxReconciliationIncomeTaxExpenseBenefitExpirationOfTaxAttributes" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_IncomeTaxReconciliationIncomeTaxExpenseBenefitTaxContingenciesNetOfReversals" name="IncomeTaxReconciliationIncomeTaxExpenseBenefitTaxContingenciesNetOfReversals" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_InterestAndPenaltiesMember" name="InterestAndPenaltiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_LineOfCreditFacilityComponentOfCalculationForMaximumBorrowingAmountUnderFormulaAdvances" name="LineOfCreditFacilityComponentOfCalculationForMaximumBorrowingAmountUnderFormulaAdvances" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pxlw_LineOfCreditFacilityInterestRatePrimeRatePlus" name="LineOfCreditFacilityInterestRatePrimeRatePlus" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_LineOfCreditFacilityMaximumBorrowingCapacityLimitedByEligibleAr" name="LineOfCreditFacilityMaximumBorrowingCapacityLimitedByEligibleAr" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="pxlw_LineOfCreditFacilityMaximumBorrowingCapacityUnderNonFormulaAdvances" name="LineOfCreditFacilityMaximumBorrowingCapacityUnderNonFormulaAdvances" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pxlw_MinimumPercentEquityOwnershipByShareholderForOwnershipChangeConsiderations" name="MinimumPercentEquityOwnershipByShareholderForOwnershipChangeConsiderations" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_NumberOfPatents" name="NumberOfPatents" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="pxlw_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentTaxPortionAttributableToParent" name="OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentTaxPortionAttributableToParent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pxlw_OwnershipChangePercentIncreaseInEquityOwnershipBy5Shareholder" name="OwnershipChangePercentIncreaseInEquityOwnershipBy5Shareholder" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_Plan2006Member" name="Plan2006Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_Publicfloatshareprice" name="Publicfloatshareprice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element id="pxlw_Reductiontodeferredtaxassets" name="Reductiontodeferredtaxassets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="pxlw_ReversalOfUncertainTaxPositions" name="ReversalOfUncertainTaxPositions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pxlw_SaleOfPreviouslyReservedInventory" name="SaleOfPreviouslyReservedInventory" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pxlw_ScheduleOfAccountsReceivablePercentagesFromSignificantCustomersTableTextBlock" name="ScheduleOfAccountsReceivablePercentagesFromSignificantCustomersTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumAnnualPurchaseAmountPerEmployee" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumAnnualPurchaseAmountPerEmployee" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="pxlw_ShareBasedCompensationArrangementByShareBasedPaymentAwardOfferingPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOfferingPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpectedToVest" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpectedToVest" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="pxlw_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpectedToVestOutstandingAggregateIntrinsicValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpectedToVestOutstandingAggregateIntrinsicValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="pxlw_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpectedToVestWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpectedToVestWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element id="pxlw_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpectedToVestWeightedAverageRemainingContractualTerm" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpectedToVestWeightedAverageRemainingContractualTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsMonthlyVestingPercentVestingBeginningAfterYearOne" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsMonthlyVestingPercentVestingBeginningAfterYearOne" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNumberOfMonthsVestingAfterOneYear" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNumberOfMonthsVestingAfterOneYear" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsPercentVestedOnOneYearAnniversaryOfGrant" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsPercentVestedOnOneYearAnniversaryOfGrant" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVested" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVested" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="pxlw_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedOutstandingAggregateIntrinsicValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedOutstandingAggregateIntrinsicValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="pxlw_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element id="pxlw_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedWeightedAverageRemainingContractualTerm" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedWeightedAverageRemainingContractualTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationContractualLife" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationContractualLife" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_ShareBasedCompensationArrangementByShareBasedPaymentAwardPurchasePeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPurchasePeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_ShareBasedCompensationArrangementByShareBasedPaymentRestrictedStockUnitAwardsOutstandingExpectedToVest" name="ShareBasedCompensationArrangementByShareBasedPaymentRestrictedStockUnitAwardsOutstandingExpectedToVest" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="pxlw_ShareBasedCompensationArrangementByShareBasedPaymentRestrictedStockUnitAwardsOutstandingExpectedToVestWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentRestrictedStockUnitAwardsOutstandingExpectedToVestWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element id="pxlw_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpiredWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpiredWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_SoftwareLicensesFutureMinimumPaymentsDueCurrentPortionOfPresentValue" name="SoftwareLicensesFutureMinimumPaymentsDueCurrentPortionOfPresentValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pxlw_SoftwareLicensesFutureMinimumPaymentsDueInThreeYears" name="SoftwareLicensesFutureMinimumPaymentsDueInThreeYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pxlw_SoftwareLicensesFutureMinimumPaymentsDueInTwoYears" name="SoftwareLicensesFutureMinimumPaymentsDueInTwoYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pxlw_SoftwareLicensesFutureMinimumPaymentsDueInterestComponent" name="SoftwareLicensesFutureMinimumPaymentsDueInterestComponent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pxlw_SoftwareLicensesFutureMinimumPaymentsDueLongTermPortionOfPresentValue" name="SoftwareLicensesFutureMinimumPaymentsDueLongTermPortionOfPresentValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pxlw_SoftwareLicensesFutureMinimumPaymentsDueNextTwelveMonths" name="SoftwareLicensesFutureMinimumPaymentsDueNextTwelveMonths" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pxlw_SoftwareLicensesFutureMinimumPaymentsDuePresentValue" name="SoftwareLicensesFutureMinimumPaymentsDuePresentValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pxlw_SoftwareLicensesFutureMinimumPaymentsDueTotal" name="SoftwareLicensesFutureMinimumPaymentsDueTotal" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="pxlw_TaxCreditCarryforwardsResearch" name="TaxCreditCarryforwardsResearch" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="pxlw_TopFiveEndCustomersMember" name="TopFiveEndCustomersMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="pxlw_UncertainTaxPositionsMember" name="UncertainTaxPositionsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_YearsOfAmortizationPeriodOfLicensedTechnologyLowerLimit" name="YearsOfAmortizationPeriodOfLicensedTechnologyLowerLimit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="pxlw_YearsOfAmortizationPeriodOfLicensedTechnologyUpperLimit" name="YearsOfAmortizationPeriodOfLicensedTechnologyUpperLimit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
</xsd:schema>