资源描述:
《《液晶屏知识简介》PPT课件.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、液晶屏知识简介TheBriefIntroductionForLCDPanel培训目的Targets1、熟悉液晶显示屏的基本结构ToknowthebasicconfigurationofLCDpanel2、掌握液晶显示屏各接口的意义Tohandlethemeaningsofeachport3、掌握液晶显示屏工作条件TohandletheworkingconditionsofLCDpanel4、熟悉液晶屏的常见故障ToknowthegeneralfaultonLCDpanel目录Contents1、液晶屏的基本组成Thebasicconfigura
2、tionofLCDpanel2、液晶屏接口的意义ThemeaningsofLCDpanel’sports3、液晶屏的工作条件TheworkingconditionsofLCDpanel4、液晶屏的常见故障ThegeneralfaultonLCDpanel一、液晶屏的基本组成Basicconfiguration所有的液晶屏(TFT-LCD)都包括:AllTFT-LCDpanelincludes:显示屏单元PanelunitTFT驱动板TFTdrivingboard背光板Backlightboard冷镜色轮光源屏幕投影镜头处理器存储器光学1、显示屏
3、单元Panelunit液晶基片:主要由液晶、TFT、TFT电极、彩色滤光片、玻璃基板和偏光片等组成。LiquidCrystalModule:ConsistofLiquidcrystal,ThinFilmTransistor,TFTelectrodesheets,Colorfiltersheet,GlasssheetsandPolarizingfilter.光源模组:主要由灯管、反射板、导光板、散射板、棱镜片和保护膜等组成。Lightsourcemodule:consistofCCFL,Reflectionsheet,LightGuidePlat
4、e(LGP),Diffusersheet,PrismsheetsandProtectionsheet.2、TFT驱动板TFTDrivingboard主要包括:输入信号连接器、时序控制器、帧缓冲器、DC-DC转换及基准电压、扫描驱动IC和数据驱动IC等。Including:Inputconnector,Timingcontroller,Framebuffer,DC-DCconverter&referencevoltage,ScandriverICandDatadriverIC.3、背光板Backlightboard主要包括:输入连接器、背光控制I
5、C、N沟道双MOSFET、变压器、输出连接器和检测保护电路等。Including:Inputconnector,Invertercontroller,N-channeldualMOSFET,Transformer,Outputconnector,Overcurrent&voltagedetectionandprotection.4、液晶屏的拆解Disassemblethepanelunit(以奇美27寸屏为例takeexamplefor27-incheCHIMEIpanel)拆去背光板屏蔽罩后轻轻拔掉7个灯管插头和一个公共插头,拿开背光板。Di
6、sassemblethebacklightshieldandputofftheplugs,thenremovethebacklightboard.拆去TFT驱动板屏蔽罩DisassembletheTFTdrivingboardshield.拆去TFT驱动板排线DisassembletheTFTdrivingboardcables.拿开TFT驱动板TakeawaytheTFTdrivingboard.将液晶屏翻转过来,拆去屏框上的10颗螺钉Overturnthepanelunit,disassemblethe10screwsontheframe.
7、将屏框拆掉后Afterdisassembledtheframe.拆去接口板上的螺钉Removethescrewsonthecircuitboard.将液晶板翻起,并拿开Putupthepanelunitandremoveit.背光源组件Backlightsourcemodule.将背光源组件翻转过来,撕开黑胶纸。Overturnthebacklightmodule,riveofftheblacktape.用一字起轻轻撬开卡扣Lightlyprizeupthefastenerswithascrewdriver.翻起反射板,可以看到灯管CCFLPu
8、tupthereflectionsheet,theCCFLsappear.完整的灯管排列AlltheCCFLs.CCFL简介CCFL是ColdCath