Influencing factors of TFT-LCD gravity Mura

Jian WANG; Chao WANG

doi:10.3788/YJYXS20193405.0496

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Influencing factors of TFT-LCD gravity Mura

Materials and Devices | 更新时间：2020-07-05

- Influencing factors of TFT-LCD gravity Mura
- Chinese Journal of Liquid Crystals and Displays Vol. 34, Issue 5, Pages: 496-500(2019)
- 作者机构：
  
  北京京东方显示技术有限公司, 北京 100176
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20193405.0496
  CLC： TN141.9
- Received：18 December 2018，
  
  Accepted：15 January 2019，
  
  Published：05 May 2019
- 稿件说明：
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Jian WANG, Chao WANG. Influencing factors of TFT-LCD gravity Mura[J]. Chinese journal of liquid crystals and displays, 2019, 34(5): 496-500.
DOI：

Jian WANG, Chao WANG. Influencing factors of TFT-LCD gravity Mura[J]. Chinese journal of liquid crystals and displays, 2019, 34(5): 496-500. DOI： 10.3788/YJYXS20193405.0496.

摘要

重力Mura不良一直是显示业内一种比较难以解决的顽疾。随着显示屏透过率及对比度的要求不断提高，产品设计安全范围变得更小，因此重力Mura不良的解决更是尤为关键。本文对显示屏内部特性因素进行了分析，并通过工艺变更样品制作，进行液晶量安全范围（LC Margin）实验测试。证明了引起LC Margin变化的主要因素为柱状隔垫物（PS）高度，同时阵列基板上的源极信号体（S/D）膜层厚度和栅极（Gate）膜层厚度同样对LC Margin产生一定影响；CF基板上BM&OC&Blue膜层厚度、玻璃厚度特性参数也会导致LC Margin发生变化；在成盒（Cell）制作工艺中，PI膜层厚度及液晶型号对LC Margin的产生影响虽然不大，但也不容忽视；通过这样的实验论证，为业内研究提供相关依据，也为企业提供验证经验，保证产品的品质。

Abstract

Poor gravity Mura has always been a difficult problem to solve in the display industry. With the increasing requirement of transmittance and contrast of display screen

product design Margin becomes smaller

therefore

the solution of gravity Mura is particularly critical. In this paper

the internal characteristic factors of the display screen are analyzed

and the LC Margin test is carried out by making sample with process change. It is proved that the main factor causing the change of LC Margin is the PS height. At the same time

the thickness of SD film and Gate film on Array glass also have some influence on LC Margin. The thickness of BM & OC & Blue film and the characteristic parameters of glass thickness on CF glass will also lead to the change of LC Margin. The thickness of PI film and the type of LC have little influence on the production of LC Margin

but it can not be ignored. Such experimental demonstration provides relevant basis for industry research

and also provides verification experience for enterprises to ensure the quality of products.

关键词

Keywords

references

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