简介:如果说韩国人在对待DVB/DMB上采用了类似疯狂的举措,那么欧洲厂商推出产品的速度就只能用“稳步”来形容,先锋欧洲公司推出这款内置了DVB-H接收功能的等离子电视可视面积为43英寸、
简介:PhosphorsforPDPhasgoodprospectforthelargepotentialofPDPindustry.LEDtechnologybringsnewmarkettobedeveloped.DevelopingphosphorsforwhiteLEDwithhighefficiencyandlowlightattenuationisanurgentworktodo.ApplicationofphosphorsincolorLEDisininitialstage.1.GoodProspectofPhosphorsforPDPColorPDPiswidelyusedtoday.Three-prime-colorphosphorexcitedbyVUVisthekeymaterialforcolorPDP.Thismakesresearchonthree-prime-colorphosphorforcolorPDPimportant.Follow...
简介:在过去的75年中,大量的主流电视机都是由同一种技术制造的,也就是阴极射线管(简称CRT)。CRT主要由电子枪、偏转线圈及阴极射线管组成。阴极射线管由于是由玻璃制造的,所以非常易碎,井且屏幕有不易察觉的抖动,不过它的致命弱点井不是上述这些,而是它过于庞大的体积。CRT技术的一个规律就是:屏幕面积越大,显像管也就越长,只有这样才能保证扫描电子枪有足够的深度空间把电子束打到整个屏幕上。最近,一种新型的电视开始抢占市场并成为时尚电视的代言人,等离子显示屏(PlasmaDisplayPanel简称PDP)。这种新型电视具有和基于CRT技术生产的电视一样宽大的显示屏,但它的厚度只有15厘米!在以下的文章中,我们将和您共同剖析一下,是什么样的技术制造了如此节省空间的大屏幕电视。
简介:Amacro-cellwasusedtostudythephenomenonofanodestriationona34VGAShadowMaskPlasmaDisplayPanel(SMPDP).Thebreakdownprocessinthesustainingperiodofthemacro-cellwastakenbyanIntensifiedChargeCoupledDevice(ICCD)withnarrowbandfilters.ThemechanismofformationandevolutionoftheanodestriationonSMPDPwereinvestigated.Theinfluenceofthewidthoftheelectrode,thesustainingvoltage,sustainingfrequencyandthevoltageoftheshadowmaskontheanodestriationwasalsostudied.Theresultsshowedthatthewidthoftheelectrodes,thesustainingvoltageandfrequencyhadastronginfluenceontheanodestriation.Thevoltageoftheshadowmask,however,hardlyaffectedtheanodestriation,thefiringvoltageorthesustainingvoltage.
简介:Closed-celltypebarrierribssuchasmeander,honeycomb,SDR,andwaffletypeswereproducedusingcapillarymoldingprocess.SinteringoftheribsrevealedthattheribswithasymmetricgeometrysuchasmeanderandSDRtypebecamedistortedseverelybythesinteringprocess,buttheribswithsymmetricgeometrysuchashoneycombandwaffletypemaintainedtheirgreenstatemorphology.Aftersintering,theribswerecoatedwithgreenphosphorusingosmosiscoatingprocessanditsluminancecharacteristicswereevaluated.Theresultsindicatedthattheluminanceanditsefficiencyisimprovedbyusingclosed-celltyperibswiththenewphosphorformingtechnology.
简介:Theeffectsoflinearfallingrampresetpulserelatedtoaddressingoperationinanalternatingcurrentplasmadisplaypanel(ACPDP)werestudied.Thewallchargewaveformsweremeasuredbytheelectrodebalancemethodina12-inchcoplanarACPDP.Thewallchargewaveformsshowtherelationshipbetweenthesloperatioofthefallingrampresetpulseandthewallchargesattheendofthefallingrampresetpulsewhichinfluencestheaddressingstability.Thentheeffectsofthesloperatioofthelinearfallingrampresetpulseontheaddressingvoltageandaddressing,timewereinvestigated.Theexperimentalresultsshowthattheminimumaddressingvoltageincreaseswiththeincreaseofthesloperatioofthefallingrampresetpulse,andsodoestheminimumaddressingtime.Basedontheexperimentalresults,theoptimizationoftheaddressingtimeandthesloperatioofthefallingramppulseisdiscussed.
简介:Redphosphor(Y,Gd)BO3:Eu3+withgrainshape,smallsize,non-agglomerate,highcrystallinityandgoodphotoluminescence(PL)intensitywaspreparedbyacomplexmethodthattheprecursorofthephosphorwaspreparedbyco-precipitationmethodandthephosphorwaspreparedbycombustionmethod.TheSEMphotosandthephotoluminescencespectrumexcitedunderVUVshowthatthemorphologyandluminescentpropertiesofthisphosphoraresatisfiedwhenanappropriateamountofureawasadoptedasthecombustionagentinthepreparationprocedure.