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 > App Notes > DISPLAY DRIVERS

Keywords: LCDs, LCD displays, LCD drivers, triplex, duplex, opamps, operational amplifiers, op amps Jul 09, 1998

APPLICATION NOTE 415
Buffering Scheme Drives Large LCDs

Abstract: This application notes shows how to buffer the triplex backplane drive outputs of a LCD driver such as MAX7231
family to increase the capacitive drive capability. This enables a large LCD to be driven without ghosting and other artifacts
due to backplane waveform distortion.


To conserve pins, many LCD Drivers triplex their drive signals―a technique that enables AC waveforms on trhree common lines
and three segment lines to activate any standard character of a seven-segment display. Large LCDs of 1" or more exhibit a
large capacitance between the common a