TN型产品画面切换潮汐现象的分析与改善

田明; 郝园园; 王明超; 宋洋; 张衎; 林鸿涛; 崔晓鹏; 陈维涛

doi:10.3788/YJYXS20173201.0001

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TN型产品画面切换潮汐现象的分析与改善

材料与器件 | 更新时间：2020-07-07

- TN型产品画面切换潮汐现象的分析与改善
- Analysis and improvement of TN product pattern switching tide phenomenon
- 液晶与显示 2017年32卷第1期页码：1-6
- 作者机构：
  
  北京京东方显示技术有限公司, 北京 100176
- 作者简介：
  
  田明(1987-),男,吉林长春人,高级研究员,主要从事TFT-LCD产品研发及不良解析工作。E-mail:tianming@boe.com.cn
- 基金信息：
- DOI：10.3788/YJYXS20173201.0001
  中图分类号： TN873+
- 收稿日期：2016-08-17，
  
  录用日期：2016-9-11，
  
  纸质出版日期：2017-01
- 稿件说明：
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田明, 郝园园, 王明超, 等. TN型产品画面切换潮汐现象的分析与改善[J]. 液晶与显示, 2017,32(1):1-6.

Ming TIAN, Yuan-yuan HAO, Ming-chao WANG, et al. Analysis and improvement of TN product pattern switching tide phenomenon[J]. Chinese journal of liquid crystals and displays, 2017, 32(1): 1-6.
田明, 郝园园, 王明超, 等. TN型产品画面切换潮汐现象的分析与改善[J]. 液晶与显示, 2017,32(1):1-6. DOI： 10.3788/YJYXS20173201.0001.

Ming TIAN, Yuan-yuan HAO, Ming-chao WANG, et al. Analysis and improvement of TN product pattern switching tide phenomenon[J]. Chinese journal of liquid crystals and displays, 2017, 32(1): 1-6. DOI： 10.3788/YJYXS20173201.0001.

摘要

TN型LCD产品在由L255向L0切换瞬间经常出现一种潮汐现象。该现象表现为像素边缘液晶响应延迟，有短暂的局部漏光，对品质影响较大。为改善该不良进行了研究。首先，根据不良表现出来的规律性，明确了只有摩擦弱区并不能导致不良；接着，通过大量的实测数据及电学实验分析证明了侧向电场增大到一定程度后才能使不良发生。分析表明，不良是摩擦弱区和侧向电场共同作用的结果，通过优化像素电极和数据线与摩擦弱区的位置关系，不良由2.7%下降到0.3%左右。

Abstract

A tide phenomenon appears when TN-LCD switches from L255 to L0 which shows as the LC response delay at pixel edge and temporary light leakage

and it will affect the product quality seriously. In order to improve the defect we conduct a research. First

according to the regular performance

we confirm that rubbing shadow itself can not lead to defects. Then

we confirm that the defect appears when edge field intensity increases to a certain degree by large number of measured data and electrical experiments. The analysis shows that the defect is the result of the combined action of the rubbing shadow and edge field intensity

the defect ratio decrease from 2.7% to 0.3% by optimizing the relation between Pixel ITO and Data Line.

关键词

Keywords

references

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