TFT-LCD改善“斑点不良”的研究

李晓吉; 赵彦礼; 栗鹏; 李哲; 朴正淏; 金在光; 金熙哲; 尚飞; 邱海军

doi:10.3788/YJYXS20173207.0507

您当前的位置：

首页 >

文章列表页 >

TFT-LCD改善“斑点不良”的研究

材料科学 | 更新时间：2020-08-12

- TFT-LCD改善“斑点不良”的研究
- Prevention of TFT-LCD's "spot issue"
- 液晶与显示 2017年32卷第7期页码：507-511
- 作者机构：
  
  重庆京东方光电科技有限公司, 重庆 400700
- 作者简介：
  
  [ "李晓吉(1989-), 女, 湖北襄阳人, 硕士, 中级研究员, 2012年于河北工业大学取得学士学位, 2015年于河北工业大学取得硕士学位, 主要从事Cell设计方面的工作。" ]
- 基金信息：
- DOI：10.3788/YJYXS20173207.0507
  中图分类号： TP394.1;TH691.9
- 收稿日期：2016-11-29，
  
  录用日期：2017-2-27，
  
  纸质出版日期：2017-07-05
- 稿件说明：
移动端阅览
李晓吉, 赵彦礼, 栗鹏, 等. TFT-LCD改善“斑点不良”的研究[J]. 液晶与显示, 2017,32(7):507-511.

Xiao-ji LI, Yan-li ZHAO, Peng LI, et al. Prevention of TFT-LCD's "spot issue"[J]. Chinese journal of liquid crystals and displays, 2017, 32(7): 507-511.
李晓吉, 赵彦礼, 栗鹏, 等. TFT-LCD改善“斑点不良”的研究[J]. 液晶与显示, 2017,32(7):507-511. DOI： 10.3788/YJYXS20173207.0507.

Xiao-ji LI, Yan-li ZHAO, Peng LI, et al. Prevention of TFT-LCD's "spot issue"[J]. Chinese journal of liquid crystals and displays, 2017, 32(7): 507-511. DOI： 10.3788/YJYXS20173207.0507.

摘要

在压力测试时，高分辨率TFT-LCD（Thin Film Transistor-Liquid Crystal Display）液晶面板会发生“斑点不良”。为了预防该不良的发生，本文分析了“斑点不良”的发生机理：压力测试时，隔垫物PS（Photo Spacer）发生滑动，将阵列基板上透光区域的配向膜-聚酰亚胺PI（Polyimide）划伤，而失去配向液晶能力，在暗态画面下，划痕处会发生漏光，形成斑点状。本文对不同尺寸及分辨率的液晶面板进行了压力测试，比较隔垫物挡墙、黑矩阵BM（Black Martrix）、隔垫物站位等不同因素对“斑点不良”的影响：隔垫物挡墙能有效阻挡隔垫物的滑动距离的23.6%，能有效降低“斑点不良”的漏光发生；当隔垫物滑动的距离未超出黑矩阵的遮挡范围时，不可见“斑点不良”或很轻微；站在金属块（Pillow）上的隔垫物比没有站在Pillow上的隔垫物滑动距离小约10%。最后以49 in超高清UHD（Ultra High Definition）液晶面板为例，提出一种改善“斑点不良”的的设计方案：增加PS上下挡墙设计，降低PS滑动距离；增加BM宽度设计，保证PS边缘到BM边缘的距离大于PS滑动距离；降低PS的个数，增加PS的大小设计降低透过率损失。该方案客户验证无“斑点不良”发生且透过率下降1.2%，说明此设计方案能够有效地改善“斑点不良”。

Abstract

When we proceed pressure test on TFT-LCD(Thin Film Transistor-Liquid Crystal Display) panels with high resolution

"spot issue" always occurs. PS(Photo Spacer) slides from Gate metal line to transparent area and scratches PI(Polyimide) film

so that LC(Liquid Crystal) molecules can't be anchored. At Dark Picture

place where PI film is damaged occur light-leaking

and forms "spot issue". In order to prevent this issue

we carried out pressure test on TFT-LCD panels with different size and resolution and compared the designs of Photo Spacer

Barriers

BM CD(Black Matrix Critical Dimension) and PS standing Position. We find that the sliding distance of PS can effectively reduce 23.6% by PS Barriers

so light-leaking risk effectively decrease. When PS sliding distance is not beyond the scope of BM(Black Matrix)

"spot issue" is not invisible or very slight. The sliding distance of PS standing on the Pillow made by metal block is smaller than that without standing on the Pillow about 10%. At last

taking an example of 49 UHD(Ultra High Definition)

we put forward an effective prevention of "spot issue" design of LCD: Increasing the PS Barriers design to reduce the sliding distance of PS; Increasing the width of BM CD make sure the distance from PS edge to BM edge being greater than PS sliding distance; Reducing the number of PS and increasing the size of the PS design reduce the transmittance loss. The results of client authentication do not occur "spot issue" and transmittance fell by 1.2%

which shows that this design scheme can effectively improve the "spot issue".

关键词

Keywords

references

陈重, 李浩, 陈曦.新型高分辨率LCD控制器的设计与实现[J].电子技术应用, 2011, 37(6):123-126.

CHEN Z, LI H, CHEN X.Design and implementation of large-screen LCD controller[J]. Application of Electronic Technique , 2011, 37(6): 123-126. (in Chinese)

ANNISC, SEMENZA P. 通过改进TFT-LCD生产工艺提高光透过率降低生产成本和能耗[J]. 尹春健, 译. 现代显示, 2011, 22(S1): 5-9.

ANNISC, SEMENZA P. Better transmission: TFT-LCD manufacturing advances reduce cost and energy consumption[J]. YIN C J, Trans. Advanced Display , 2011, 22(S1): 5-9. (in Chinese)

马群刚.TFT-LCD原理与设计[M].北京:电子工业出版社, 2011:7-12.

MA Q G. Principle and Design of TFT LCD [M].Beijing: Publishing House of Electronics Industry, 2011: 7-12. (in Chinese)

陈丽丽.液晶显示器用隔垫物的专利技术综述[J].河南科技, 2015(10):20-22.

CHEN L L. Review on the patent technology of spacer for liquid crystal display[J]. Journal of Henan Science and Technology , 2015(10): 20-22. (in Chinese)

周华. 盒厚控制工艺对液晶显示器件光电特性影响的研究[D]. 上海: 上海交通大学, 2014.

ZHOU H. Study on cell gap process of TFT LCD and the impact of display effect[D].Shanghai: Shanghai Jiao Tong University, 2014. (in Chinese)

杨国波, 谭伟伟, 赵军, 等. ODF生产线设计[J].光机电信息, 2011, 28(10):71-75.

YANG G B, TAN W W, ZHAO J, et al . Design of ODF production line[J]. OME Information , 2011, 28(10): 71-75. (in Chinese)

程石, 王涛, 张敏, 等. TFT-LCD中隔垫物密度与Push Mura和低温气泡的关系[J].液晶与显示, 2011, 26(5):604-607.

CHENG S, WANG T, ZHANG M, et al . Relationship of spacer density with push Mura and cold bubble in TFT-LCD[J]. Chinese Journal of Liquid Crystals and Displays , 2011, 26(5): 604-607. (in Chinese)

王银春, 李卓, 李荣. TFT-LCD成盒工程中配向不良的改善[J].现代显示, 2009, 20(6):25-28.

WANG Y C, LI Z, LI R. The improvement of disclination defect in TFT-LCD cell process[J]. Advanced Display , 2009, 20(6): 25-28.(in Chinese)

李文波, 王刚, 张卓, 等. TFT用掩模版与TFT-LCD阵列工艺[J].半导体技术, 2010, 35(6):522-526, 529.

LI W B, WANG G, ZHANG Z, et al . Mask used for TFT and TFT-LCD array technology[J]. Semiconductor Technology , 2010, 35(6): 522-526, 529. (in Chinese)

费民权, 费悦. MVA模式TFT-LCD用彩色滤光片制程解析[J].现代显示, 2009, 20(3):28-33.

FEI M Q, FEI Y. The process analysis of MVA mode TFT-LCD color filter[J]. Advanced Display , 2009, 20(3): 28-33.(in Chinese)

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

TFT-LCD改善“斑点不良”的研究

液晶显示屏挤压漏光的分析及改善

ADS液晶面板划痕Mura研究

表面处理对液晶显示阵列基板中黑矩阵残留的影响

新型TFT-LCD黑矩阵的细线化研究