TFT_LCD驱动芯片GATE／SOURCE静电保护电路设计与实现

文章描述了TFT_LCD驱动芯片防静电（ESD）保护电路的布局，重点分析和设计了TFT_LCD驱动芯片GATE和SOURCE引脚的ESD保护电路。ESD保护电路布局上，采用髓排ESD电路错开呈”品字形“排列，使ESD电流均匀流通。在GATE保护电路中，采用二极管接法代替通用PMOS，防止电路产生Latch-up效应。SOURCE的保护电路中．NMOS的Drain设计了RPO（Resisl Protection Oxide），使流经Drain的电流均匀分散，使二次击穿电压升高。

Design & Implement of GATE/SOURCE Pad ESD Protection in TFT_LCD Driver IC

This paper describes the layout of TFT_LCD driver IC's ESD protection. It mainly analyzes and designs ESD protection for GATE & SOURCE pin in TFT_LCD driver IC. It is adopted that triangle-shaped arrangement in two line ESD circuit is adopted to make the electric current pass equably. In the GATE protected circuit, voltage diode replace PMOS, avoid produce Latch- up phenomena. In the SOURCE protected circuit, Drain of NMOS adopted RPO design that make the current through Drain separated equably. The second ...