3M BEF introduction

3MBEF系列介绍3Vikuiti光學產品系列BEFIIIBEFIIThinBEFTBEF2TiTBEF2MiTBEF2-GMTBEF2-GTBEF-RP3RZn,BEF-RP2RC,etc稜鏡片ESRLBR220/160ESRB220/120反射片DBEF-IIDBEF4DBEF-DD280D400反射式偏光增亮膜DBEF-P/III/IVBEF4-GMv2BEF4-GTConstruction:BEFII&BEFIII90125m155m50mPETAcrylicResinBEFII90/50BEFIII90/50AcrylicResin90155~160mPET50m125mChaosPrismStructureRegularPrismStructureBEF3-T-205ASNAS:anti-static(抗静电)N:Non-halogenated(非卤)PrismFilmConcept棱镜膜原理•Wideangularrangeofexitinglight•Blueraysaredirectedtotheviewer•RedraysmisstheviewerandarewastedStep#1•Redraysarerefractedtowardsviewer•BlueraysexperienceTIRandreturntobacklightStep#2•Diffusereflectionsinbacklightrecyclebluerays•NewexitingraysSIDbetransmittedbytheBEForreturnedtobacklightforfurtherrecycling一般情況下,大角度的光(紅色)會被浪費BEF能夠把原本散開的光聚到中央,而原本射向中央的光則反射到導光版內,重新反射重覆這來回反射盡量令所有光聚到中央NOBEFWITHBEF–2StepsDBEF-D结构背光源LCDDBEFPSPSSSPP损失50％亮度DBEF工作原理上偏光片下偏光片3MReflectors•ESR-NoMetal(不含金屬)-MultilayerOpticalfilm-Specularreflection-Reflectivity~98%-HighPerformanceBEF-RP3PrismFilms(Vikuiti™BrightnessEnhancement)TBEFDISCOpattern:anti-wetout90°prismsTBEF2pattern:sharptip90°prismsBEFRP2-Rpattern:random90°prismsPrismpitches:17,18,19,24,50mNon-halogenatedprismresinMatteorsmoothbacksurfacesSubstratesPET,DBEF-Q,APF-35Thickness:45–115m(handhelddisplays)140–160m(notebooks)200–285m(monitor,TV)TBEF2patternBEFRP2-RpatternDISCOPatternHighgainprismresinBottomPolarizerBEFIncidentlightRefractionHigherindexprismresinprovidesadditionalcollimationisotropicsubstrateRI=1.5RI=1.6Non-HalogenatedProduct•Non-halogenatedProductDefinition:800PPMBromine,800PPMChlorine,1000Bromine+ChlorinePPMDBEF4DBEF2Review~3mils(75mm)StructuralLayer(Skin)OpticalLayersStructuralLayer(Skin)6mils(152mm)StructuralLayer(Skin)OpticalLayersStructuralLayer(Skin)8mils(200mm)DBEFII6milDBEFII8milDBEFOpticsLayer•MatteCoatingonDBEF2–DBEFwithstructuralskinlayers–BeadLoadingToBalanceWetOut,Curl,Brightness,ImprintingandReflectiveMoireHiding–SurfaceroughnesstoreducethestaticaccumulationinassemblyDiffuse/StructuralLayerDiffuse/StructuralLayerMatteCoatingMatteCoatingDBEF4Construction(158±15umthickness)MorphologyfromSEMCross-sectionDBEFII2sidesurfaceDBEF4topDBEF4bottomProductObjectives•NoWet-outtorearpolarizer–Currently,DBEF2requirestheuseAGonrearpolarizertoavoidwet-outissue–NotallAGpolarizersaresuitableforusewithcurrentDBEF2•AGpolarizermayscratchDBEF2afterRAtest–IncreasehardnessofDBEF2skins•No/LowTextureMura(Sparkle)–MaintainvisualqualityofDBEF2•Doublesidecoating–MaintainbalancedconstructionVisualQualityPolarizerTypeGlossAGDBEF2NoYesDBEF4YesYesDBEF4istargetedforadoptioninanykindofpolarizersystemsComparisonofOpticsProperties1.ET:Comparable2.Transmittance:Comparable3.Haze:DBEF4DBEF2(CQSclaim:DBEF4:55%-70%;DBEF2is30%-50%)49.850.741.167.01.6891.6920.010.020.030.040.050.060.070.080.0DBEF4DBEF2Transmittance/Haze(%)1.6801.6851.6901.6951.700EfficientTransmittanceTransmittanceHazeE.T.Opticalperformance_Xprismsystem1.Viewingangle:•ComparablewithD2•WiderthanxPrismsystem2.On-AxisBrightness:•D4has3~5%brighterthanD2insomesystem050100150200250300350Theta-75-65-55-45-35-25-15-5515253545556575Abs.Luminance(Cd/m²)BD+X2Tn+TDBD+X2Tn+DBEF2BD+X2Tn+DBEF4xprismDIIorDIV1.001.271.321.001.271.320.500.700.901.101.301.50BD+xp+TDBD+xp+DBEF2BD+xp+DBEF4Lum.ratio9pt_RatioMiddlepoint_RatioDBEF4SurfaceHardnessAnalysisHBFHIncreasingLeadHardnessDBEF2Scratch_SurfaceofPolarizerDBEF2DBEF4Topdiffuser30%AGpolarizerOKOKOKGlossypolarizerOKOKOK**Judgmentismadeby15.6”module(glare/glarepanel)GlossyPolarizerAGPolarizerSummary•DBEF4couldget3~5%brighterthanDBEF2insomesystem.•NoneedAgpolarizeradoptionwithbalancebeadscoating.•BetterdurabilityandhidingperformancecomparingtoDBEFII.•Betteryieldinseveralcustomers’evaluation.3-milHighGainBEFintroductionProductConstructions•BEF4-GT-90(24),withthicknessof90um•BEF4-GM-95(24)v2,withthicknessof95umHGPrismResin,24pitch3-milPETHGPrismResin,24pitch3-milPETMattecoating,GMv2HighBrightnessPrismUpdate•BEF2-G4-T155–ReplacementforBEF2-G2MR–Similarbrightness–EliminateshazeaccumulationinHTHH–Maintainnon-halogenatedconstruction–Availability–PhasinginasreplacementforBEF2-G2-MR•BEF4-GT-90(24)–Thinnerhighbrightnessfilm–90degreeprismswith24µmpitch–Available•BEF4-GM-95(24)v2–Thinhighbrightnessmattefilm–90degreeprismswith24µmpitch–AvailableHighBrightnessPrismFilmsforNotebookPCs•BEF2-G4-T155•BEF4-GT-90•BEF4-GM-95v2127umPETSubstrateNon-Halogenated/HighIndexPrismLayer76umPETSubstrateNon-Halogenated/HighIndexPrismLayer76umPETSubstrateNon-Halogenated/HighIndexPrismLayerMattecoatingAxialLuminanceChangeBEF2-G2MR334.7100%BEF4-GMv2292.487%BEF4-GT325.997%CrossBEFwithCoverSheetCrossedBEFwithCoverSheet050100150200250300350400-80-70-60-50-40-30-20-1001020304050607080PolarAngle(degrees)Luminance(nt)HorizontalCrossSectionLuminanceDataTotalFilmStackThickness525um405um405umAxialLuminanceChangeBEF2-G2MR334.7100%BEF4-GMv2292.487%BEF4-GT325.997%BEF4-GMv2(noCS)326.197%CrossBEF4-GMv2withoutCoverSheetCrossedBEF2-GMv2withoutCoverSheet050100150200250300350400-80-70-60-50-40-30-20-1001020304050607080PolarAngle(deg