Prevention of TFT-LCD's Particle Gap

Huan GAO; Wen-chih CHEN; Ye YAO; Nan-hong ZHANG; Zhan-feng TANG; Zhi-yuan XIN; Jing LI; Heng-liang FAN; Jun-qi HAN; Wen-xiang YIN

doi:10.3788/YJYXS20183302.0129

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Prevention of TFT-LCD's Particle Gap

Material and Device | 更新时间：2020-07-06

- Prevention of TFT-LCD's Particle Gap
- Chinese Journal of Liquid Crystals and Displays Vol. 33, Issue 2, Pages: 129-137(2018)
- 作者机构：
  
  1.合肥鑫晟光电科技有限公司, 安徽合肥 230012
  2.群龙企业咨询(上海)有限公司, 上海 200335
  3.合肥乐凯科技产业有限公司, 安徽合肥 230041
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20183302.0129
  CLC： TN141.9
- Received：26 July 2017，
  
  Accepted：22 August 2017，
  
  Published：05 February 2018
- 稿件说明：
移动端阅览
Huan GAO, Wen-chih CHEN, Ye YAO, et al. Prevention of TFT-LCD's Particle Gap[J]. Chinese journal of liquid crystals and displays, 2018, 33(2): 129-137.
DOI：

Huan GAO, Wen-chih CHEN, Ye YAO, et al. Prevention of TFT-LCD's Particle Gap[J]. Chinese journal of liquid crystals and displays, 2018, 33(2): 129-137. DOI： 10.3788/YJYXS20183302.0129.

摘要

Particle Gap是TFT-LCD制程中常见的一种缺陷。以55 UHD产品为例，Particle Gap发生率约为1.0%，对产品良率影响较大，为提升液晶屏品质和客户满意度，急需改善此不良。文章结合不良现象研究Particle Gap的主要异物模式，最终通过改善CF研磨失败异物、沙粒状异物和透明状异物这种模式达到整体Particle Gap降低的效果。首先利用流程图分析影响异物模式的关键步骤，然后通过鱼骨图、决策矩阵、假设检验验证找出影响异物模式的显著因素，最后通过合力促进法总结出显著因素的最佳改善方案，导入量产并文件标准化，可平行推广至55UHD以外的其它尺寸。改善结果表明：通过以上3种异物类型的改善，55UHD Particle Gap发生率降低至少30%，为公司带来了巨大且显著的硬性节省。

Abstract

Particle Gap was a common defect in TFT-LCD process. Taking 55 UHD product as an example

the incidence of Particle Gap was about 1.0%

which had great impact on the product yield. To enhance the quality of LCD screen and customer satisfaction

this problem needed to be resolved. In this paper

we analyzed the main types of Particle Gap by the bad phenomena and achieved the effect of reducing the Particle Gap finally by improving the CF grinding failure particle

sandy particle and transparent particle. First

we used the flow chart to analyze the key steps affecting the particle model

and then found out the significant factors through the fish bone map

decision matrix and hypothesis test verification. Finally

we summed up the best improvement program by force promotion method

which was imported into production and standardized. At the same time

above improvement measures could be extended to other size product besides 55UHD.The improved results showed the Particle Gap rate of 55UHD decreased 30% at least

which brought great significant hard savings.

关键词

Keywords

references

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