An 80-output row/column driver has been developed for flat-panel liquid crystal displays (LCDs) using multiplex rates of up to 1:300. A p-well polysilicon-gate CMOS process was enhanced to provide 30-V p-channel and 15-V n-channel transistors using double-diffused drains. By means of a cascode circuit structure, voltage capability on the n-channel side was boosted to 30 V. Parasitic surface channels were avoided by a systematic approach to high-voltage layout. Important circuit features include low power consumption, display border control, and overtemperature protection. Chip size is 25.65 mm/sup 2/. Packaging in an 18.6 mm*15.2 mm, three-sided, 120-lead, tape-automated-bonding module is optimized for wiring on single-sided assembly substrates.
展开▼
机译：已开发出一种多路复用率高达1：300的用于平板液晶显示器（LCD）的80输出行/列驱动器。增强了p阱多晶硅栅CMOS工艺，以使用双扩散漏极提供30V p沟道和15v n沟道晶体管。通过共源共栅电路结构，n沟道侧的电压能力提高到30V。通过系统化的高压布局方法避免了寄生表面沟道。重要的电路功能包括低功耗，显示边界控制和过热保护。芯片尺寸为25.65 mm / sup 2 /。采用18.6 mm * 15.2 mm的三面，120引线，带自动键合模块进行包装，适用于单面组装基板上的布线。
展开▼
