一种新型a-IGZO TFT集成栅极驱动电路设计

徐宏霞; 邹忠飞; 董承远

doi:10.3788/YJYXS20183312.0996

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一种新型a-IGZO TFT集成栅极驱动电路设计

材料与器件 | 更新时间：2020-08-12

- 一种新型a-IGZO TFT集成栅极驱动电路设计
- Novel integrated gate driver design based on a-IGZO TFTs
- 液晶与显示 2018年33卷第12期页码：996-1001
- 作者机构：
  
  1.上海交通大学, 上海 200240
  2.昆山龙腾光电有限公司, 江苏昆山 215301
- 作者简介：
  
  [ "徐宏霞(1983-), 女, 江苏省泰州人, 学士, 工程师, 2006年于盐城工学院获得学士学位, 主要从事TFT-LCD项目管理方面的工作。E-Mail: Sandy116034210055@163.com" ]
  [ "董承远(1971-), 男, 辽宁沈阳人, 博士, 副教授, 2003年于上海交通大学获得博士学位, 硕士生导师, 主要从事薄膜电子器件与集成的研究。E-mail:cydong@sjtu.edu.cn" ]
- 基金信息：
  
  国家自然科学基金(61474075);Supported by National Natural Science Foundation of China(61474075)
- DOI：10.3788/YJYXS20183312.0996
  中图分类号： TP394.1;TH691.9
- 收稿日期：2018-06-17，
  
  录用日期：2018-8-9，
  
  纸质出版日期：2018-12
- 稿件说明：
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徐宏霞, 邹忠飞, 董承远. 一种新型a-IGZO TFT集成栅极驱动电路设计[J]. 液晶与显示, 2018,33(12):996-1001.

Hong-xia XU, Zong-fei ZOU, Cheng-yuan DONG. Novel integrated gate driver design based on a-IGZO TFTs[J]. Chinese journal of liquid crystals and displays, 2018, 33(12): 996-1001.
徐宏霞, 邹忠飞, 董承远. 一种新型a-IGZO TFT集成栅极驱动电路设计[J]. 液晶与显示, 2018,33(12):996-1001. DOI： 10.3788/YJYXS20183312.0996.

Hong-xia XU, Zong-fei ZOU, Cheng-yuan DONG. Novel integrated gate driver design based on a-IGZO TFTs[J]. Chinese journal of liquid crystals and displays, 2018, 33(12): 996-1001. DOI： 10.3788/YJYXS20183312.0996.

摘要

在传统集成栅驱动电路中采用非晶InGaZnO薄膜晶体管（a-IGZO TFT）后会造成信赖性的降低，经过分析确定原因为驱动TFT阈值电压漂移。本文提出了一种改进的集成栅驱动电路，通过对驱动TFT栅节点电压的稳定控制，获得了较大的驱动TFT阈值电压漂移冗余度（从原来的不到±-3 V扩大到±-9 V），克服了a-IGZO TFT阈值电压漂移所造成的电路失效，稳定了集成栅驱动电路并延长了液晶显示器面板的寿命。

Abstract

Reliability of conventional integrated gate driver decreased with amorphous InGaZnO thin film transistors (a-IGZO TFTs) employed

which is assumed to result from the threshold voltage shift. Accordingly

An improved integrated gate circuit was proposed

which exhibited larger redundancy for the threshold voltage shift by controlling the Q-point voltage stability of driver TFTs. It prevented the circuit failure due to threshold voltage shift(

shift margin enlarged from less than ±-3 V to ±-9 V)

made integrated gate driver more stable

and led to longer life of liquid crystal display panels.

关键词

Keywords

references

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