缓冲方案驱动器大型液晶显示器

摘要：本应用笔记说明如何缓冲三缸背板驱动器输出的LCD驱动器MAX7231家庭增加电容的驱动能力等。这使得大屏幕液晶无鬼影和其他文物，由于背板波形失真驱动。

Maxim>AppNotes>DISPLAYDRIVERSKeywords:LCDs,LCDdisplays,LCDdrivers,triplex,duplex,opamps,operationalamplifiers,opampsJul09,1998APPLICATIONNOTE415BufferingSchemeDrivesLargeLCDsAbstract:ThisapplicationnotesshowshowtobufferthetriplexbackplanedriveoutputsofaLCDdriversuchasMAX7231familytoincreasethecapacitivedrivecapability.ThisenablesalargeLCDtobedrivenwithoutghostingandotherartifactsduetobackplanewaveformdistortion.Toconservepins,manyLCDDriverstriplextheirdrivesignals―atechniquethatenablesACwaveformsontrhreecommonlinesandthreesegmentlinestoactivateanystandardcharacterofaseven-segmentdisplay.LargeLCDsof1"ormoreexhibitalargecapacitancebetweenthecommona