DLP Pico Technology for Screenless Display (Rev. A)

1 DLP pico Technologyfor ScreenlessDisplayWhitePaperLiteratureNum ber:DLPA061 AJune2015 RevisedJune2015 Contents1 Whatis DLP pico Technology ?..42 Whatis ScreenlessDisplay?.. ScreenlessDisplay?..85 Systemand ElectronicsConsiderationsfor June2015 RevisedJune2015 SubmitDocumentationFeedbackCopyright 2015, of (DMD).. Combinationof ,DLPC3438,and ,IntelliBrightare trademarksof ,DLPC inemaare registeredtrademarksof othertrademarksare the propertyof June2015 RevisedJune2015 List of FiguresSubmitDocumentationFeedbackCopyri ght 2015,TexasInstrumentsIncorporatedChapter 1 DLPA061A June2015 RevisedJune2015 WhatisDLP pico Technology ?AnshulJainTexasInstrumentsDLP P icotechnologyis a micro-electro-mechanicalsystems(MEMS)tec hnologythatmodulateslight usinga digitalmicromirrordevice(DMD).

2 A DMDconsistsof hundredsof thousandsofhighlyreflective,digitallyswi tchable,micrometer-sizedmirrors(micromir rors)organizedin a a DMDrepresentsa pixelon the screen(Figure1-1) and isindependentlymodulated,in syncwith colorsequentialillumination,to displaysof productsworldwide,frommediaprojectorsto projectorsinsideof tabletsand s DLPP icochipsetsare a greatfit for any displaysystemthat requireshighresolutionand high brightnessat low powerin a DigitalMicromirrorDevice(DMD)4 Whatis DLP pico Technology ?DLPA061A June2015 RevisedJune2015 SubmitDocumentationFeedbackCopyright 2015,TexasInstrumentsIncorporatedChapter 2 DLPA061A June2015 RevisedJune2015 WhatisScreenlessDisplay?ScreenlessDispla yis a new classof projection-baseddisplaydevicethat combinesthe latestinnovationsacrossthreetechnologyar eas:DLPP icotechnology,wirelessconnectivityand any mobileoperatingsystem(Figure2-1).

3 By combiningthesethreetechnologies,Screenle ssDisplayallowsusersto displayany contenton virtuallyany surfacefroma small, example,the displaysurfacecan be a wall or tablein an officeor a home,a kitchencountertop,the ceilingin a bedroom,theside of a campingtent,or evena garagedoor(Figure2-2).Figure2-1. ScreenlessDisplayas Combinationof ThreeTechnologiesScreenlessDisplaycan be usedin a widevarietyof casesare: On the go Display : For consumerswho travelfrequentlyor live in smallhomes,ScreenlessDisplaywith embeddedwirelessand videostreamingapplicationscan createa largedisplaywhenneededyetalso remainextremelyportable. Anywheredisplay: For consumerswho wouldrathernot havea TV mountedon a bedroomwall,aScreenlessDisplaycan be an inconspicuouswirelessdevicethat blendsin to the d cor whilecreatinga large,HD displayon a wall or a ceilingas required.

4 Portablecinema: For consumerswho like to sharevideoexperienceswith others,a ScreenlessDisplaycan createuniquegroupviewingopportunitieson virtuallyany surface,insideor ,a big gameon the garagedoor,a movienightin the backyard,or watchinga movieon theside of a tent June2015 RevisedJune2015 Whatis ScreenlessDisplay?SubmitDocumentationFee dbackCopyright 2015, ScreenlessDisplayExamples6 Whatis ScreenlessDisplay?DLPA061A June2015 RevisedJune2015 SubmitDocumentationFeedbackCopyright 2015,TexasInstrumentsIncorporatedChapter 3 DLPA061A June2015 RevisedJune2015 ScreenlessDisplayAdvantagesoverTradition alDisplaysScreenlessDisplayhas severalkey advantagesovertraditionaldisplays: Screenless No fixedscreenor displaypanelrequired,allowingcontentto be displayedon virtuallyany surface.

5 Portable No fixedinstallationrequired,enablingScreen lessDisplayproductto be easilymovedortakenon the go. In contrast,traditionalbig screentelevisionsare largeand not easilymovedortransported. Scalable The displayimagesize scaleswith distancefromthe displaysurface,enablingimagesrangingfrom as smallas few inchesin diagonalto as largeas 100 inchesor morein diagonalfromthesameportabledevice. QuickSet Up No fixedinstallationor mountingon the wall or placementon a pedestalrequired allowingScreenlessDisplayproductto just poweron and createstunningdisplay. ImprovedAesthetics No fixedscreenrequired,allowingdisplayto be only visiblewhenrequiredand invisiblewhenturnedoff. Oncethe displayis off, the roomaestheticsare kept in its naturalstate withoutcompromise so thereis no displaypanelto view all of the time.

6 SmallSize No largedisplaypanelrequired,allowingScreen lessDisplayproductto be smallsize can be designedto fit in yourpocketor carryin yourhand. Smart Built-invideostreamingapplicationsand Wi-Fi,enablingScreenlessDisplayproductto provideall functionalitiesof a June2015 RevisedJune2015 ScreenlessDisplayAdvantagesoverTradition alDisplaysSubmitDocumentationFeedbackCop yright 2015,TexasInstrumentsIncorporatedChapter 4 DLPA061A June2015 RevisedJune2015 WhyChooseDLPPicoTechnologyforScreenlessD isplay?DLPP icotechnologyoffersseveralkey advantagesthat makeit a greatfit for ScreenlessDisplay: Highopticalefficiency:DLPP icotechnologycan workwith any light sourceincludingLEDs,lasers,laser-phospho ror lampand offersvery high resultis a high brightnessdisplaywith low powerconsumption,whichis a particularlygoodfit for high brightnessdisplayapplicationssuchas powerconsumptionalso enablesbatteryoperationfor a cable-lessexperience.

7 Widechoiceof displayresolutionchipsets:DLPP icotechnologyoffersa widerangeof displaychipsetsrangingfromsmallresolutio n nHD(640 360),WVGA(854 480)to HD resolution WXGA(1280 800),HD (1280 720)and Full HD (1920 1080) providesthesystemdesignerwith flexibilityin designingand differentiatingproductsacrossbrightness, size,resolution,batteryrequirementsand cost levels. Highcontrast: Dependingon the opticaldesign,DLPP icotechnologycan enablea high contrastratio,whichcreatesdeepblacksand improvesperceivedbrightnessand imagequality. Highspeed:EachDMDmicromirrorcan flip thousandsof timesper second,enablingfast colorrefreshratesand high framerates(120Hz or higherin selectcases).In addition,low displaylatencymakesDLPP icotechnologya greatfit for gaming.

8 Advancedimageprocessingalgorithms:The DLP IntelliBright suiteof algorithmsprovidestwokey functions: ContentAdaptiveIlluminationControl:The abilityto dynamicallyadjusteachRGBLEDto optimizepowerbasedon frameby framecontent. LocalAreaBrightnessBoost:The abilityto intelligentlyboostdarkerregionsof imagesdependingon moreinformationon thesealgorithms,see the TI a millionsof DLPchipshavebeensold andDLPC inema is the technologyof choicefor morethaneightof ten ScreenlessDisplaytake the samecoretechnologyand transformit into a tiny chip thatcreatesstunningdisplaysfromcompact, ScreenlessDisplay?DLPA061A June2015 RevisedJune2015 SubmitDocumentationFeedbackCopyright 2015,TexasInstrumentsIncorporatedChapter 5 DLPA061A June2015 RevisedJune2015 SystemandElectronicsConsiderationsforScr eenlessDisplayUsingDLPT echnologyA typicalScreenlessDisplaysystemis comprisedof two subsystems(Figure5-1): Frontend subsystem DLPP icoprojectionsubsystemFigure5-1.

9 ScreenlessDisplaySystemDiagramFrontend subsystem Consistsof an applicationprocessorthat providesfunctionalitysuchas: Wi-Fi/Bluetooth HDMI IR remotecontrol Audiocontrol Fan control Tilt sensorfor automatickeystonecorrection Motorcontrolfor autofocusDLPPicoProjectionsubsystem:The DLPPicoProjectionsubsystemconsistsof two additionalsubsystems:the DLPP icoopticalmoduleand DLPP icoelectronics. DLPPicoOpticalModule:The DLPPicoDMD,alongwith its associatedilluminationsources,opticalele ments,and necessarymechanicalcomponentsare combinedinto a compactand ruggedassemblyknownas an opticalmoduleor light engine(Figure5-2).9 DLPA061A June2015 RevisedJune2015 Systemand ElectronicsConsiderationsfor ScreenlessDisplayUsingDLPT echnologySubmitDocumentationFeedbackCopy right 2015, SimplifiedOpticalModuleDiagramThe opticalmoduleis the coredisplaycomponentof the be of varioussizesdependingon the applicationand general,the higherthe brightness,the largerthe size ofthe opticalmoduledue to largerLEDs,optics,DMDand thermalmanagementin the formof heatsinksand enablefastertime to marketmanyDLPP icoopticalmodulesof variousdesigns,sizes,capabilities,and performanceare readilyavailablefroma numberof OriginalDesignManufacturers(ODMs)

10 Who arepart of the moreinformationon the ecosystemand ODMcontacts,pleasevisitthe DLPPicoSolutionsand noneof the readilyavailableopticalmodulesfit the requirements,thereare severalDLPdesignhousesthat havethe expertiseto A typicalDLPelectronicssystemblockdiagramf or a ScreenlessDisplayapplicationis showninFigure5-3. The key componentsare the DLPcontroller,DLPchipsetpowermanagementI C, and theLEDdrivecircuit. The DLPcontrollercommunicateswith a frontend processorvia I2C and receives24-bitRGBvideodatavia parallelinterface. Powerup/powerdownof the DLPsystemis controlledby the frontend processorusingthePROJ_ONsignal. The PowerManagementIC (PMIC)/LEDdriverprovidesall the necessarypowersuppliesfor theDLPcontrollerand the DMDwhilethe LEDdrivercontrolsthe ElectronicsConsiderationsfor ScreenlessDisplayUsingDLPDLPA061A June2015 RevisedJune2015 TechnologySubmitDocumentationFeedbackCop yright 2015,TexasInstrumentsIncorporatedLED_SEL (2) DMDDLP3010(720pDMD) , RST, OFSI2C28 Parallel I/FHOST_IRQVCC_INTF4 DLPC3438 VCC_FLSHSPI_1 SYSPWRSub-LVDSDATACTRLFLASHL1L2 VLEDBLUEGREENREDC urrentSenseSpare R/WGPIO18 GPIO_8 (Normal Park)