Circuit for driving a liquid crystal display

Abstract

Abstract 2.1 In known drive circuits, a separate semiconductor switch which can be switched on or off is allocated to each pixel electrode. <??>2.2 According to the invention, the drive circuit is operated in multiplex mode. In this mode, the selection line of the respective row is switched on before or after the data voltage is connected to a pixel element and before that, or afterwards, the data voltage is applied to the respective column. For this purpose, a number of columns are combined to form blocks, the video signal in each case of one block being applied to the respective columns of the display element and the video signal being stepped on block by block. <??>2.3 The invention is advantageously applied to LCD displays for TV reproduction. <IMAGE>

Inventors

• 👤 Antoine Dipl.-Ing. Dupont
• 👤 Michael Dipl.-Ing. Maier
• 👤 Bernard Dipl.-Ing. Hepp
• 👤 Eric Dipl.-Ing. Benoit

Bibliographic Details