Theory research and analysis of Zara Domain on TN mode

GAO Rong-rong; CHENG Jie; LIU Jun-hao; GUO Hong-guang; ZHANG Zhou-sheng; ZUO Ai-cui; SANG

doi:10.3788/YJYXS20163103.0242

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Theory research and analysis of Zara Domain on TN mode

Material and Device | 更新时间：2020-08-12

- Theory research and analysis of Zara Domain on TN mode
- Chinese Journal of Liquid Crystals and Displays Vol. 31, Issue 3, Pages: 242-248(2016)
- 作者机构：
  
  合肥京东方光电科技有限公司Cell分厂,安徽合肥,230012
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20163103.0242
  CLC： TP394.1;TH691.9
- Received：01 July 2015，
  
  Revised：22 August 2015，
  
  Published：05 March 2016
- 稿件说明：
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高荣荣, 陈杰, 刘俊豪等. TN型产品Zara Domain理论研究与分析改善[J]. 液晶与显示, 2016,31(3): 242-248

GAO Rong-rong, CHENG Jie, LIU Jun-hao etc. Theory research and analysis of Zara Domain on TN mode[J]. , 2016,31(3): 242-248
高荣荣, 陈杰, 刘俊豪等. TN型产品Zara Domain理论研究与分析改善[J]. 液晶与显示, 2016,31(3): 242-248 DOI： 10.3788/YJYXS20163103.0242.

GAO Rong-rong, CHENG Jie, LIU Jun-hao etc. Theory research and analysis of Zara Domain on TN mode[J]. , 2016,31(3): 242-248 DOI： 10.3788/YJYXS20163103.0242.

摘要

Zara Domain是高PPI TN型TFT-LCD制成中较为常见的一种不良

为了提高产品品质

急需改善Zara Domain。以3.97 in TN 产品(PPI 235)为例

Zara Domain发生率30%

对产品良率影响较大

文章结合生产情况对Zara Domain发生的原因进行理论分析和实验验证

得出改善Zara Domain的方法。首先

产品设计上可以通过增加平坦膜改善彩膜侧平坦度。其次

材料上可以选择高预倾角的配向膜以及低Pitch的液晶分子。最后工艺上优化摩擦强度和对盒后冷却工艺。实验结果表明:通过设计

材料

工艺三方面改善

最终生产过程中Zara Domain发生率<1%

提高了产品品质。

Abstract

In order to improve the display quality of TN mode TFT-LCD product

Zara domain must be resolved which is a common defect. This paper talks about the 30% ratio Zara domain defect of 3.97 in TN mode TFT-LCD product with 235 PPI. Experiments show that the main factor influencing Zara domain is the matching of design and cell process & materials. First of all

we increase the thickness of OC to improve the CF side plainness. Second

we chose high pre-tilt angle PI ink & low pitch LC materials. Finally

the rubbing strength parameter & cooling ratio was adjusted. With suitable experiment conditions

good matching of design and cell process & materials

the display quality was largely improved

which Zara domain ratio is less than 1%.

关键词

Keywords

references

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SCHEFFER T,NEHRING J.超扭曲向列相液晶显示[J].现代显示,1995(3):29-52. SCHEFFER T, NEHRING J. Super-twisted nematic liquid crystal display[J]. Advanced Display, 1995(3):29-52. (in Chinese)

CHERN Y T, JU M H. Conformation of polyimide backbone structures for determination of the pretilt angle of liquid crystals[J]. Macromolecules, 2009, 42(1):167-179.

SEO D S, ARAYA K, YOSHIDA N, et al. Effect of the polymer tilt angle for generation of pretilt angle in nematic liquid crystal on rubbed polyimide surfaces[J]. Japanese Journal of Applied Physics, 1995, 34(4B):L503-L506.

GONG S M, LIU M, XIA S L, et al. Synthesis of novel soluble polyimides containing triphenylamine Groups for liquid crystal vertical alignment layers[J]. Journal of Polymer Research, 2014, 21(9):542.

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