SWITCHED AMPLIFIER DRIVE CIRCUIT FOR LIQUID CRYSTAL DISPLAYS

摘要

A cell driver (70) for a display unit (50) having a memory element and a liquid crystal cell among a plurality of liquid crystal cells includes a first storage capacitor (14) and a first differential amplifier (16) selectively coupled between the first storage capacitor and the liquid crystal cell forming a first drive circuit. The cell driver also includes a second storage capacitor (14') and a second differential amplifier (16') coupled between the second storage capacitor and the liquid crystal cell forming a second drive circuit. A switching mechanism (72 and 74) is used for switching the liquid crystal cell between the first and second drive circuits.