Research and improvement of bubble line in capacitive touch screen

Xin LIU; Ni YANG; Hui LI; Xue-fang CHEN; Hai-long WU; Jian-feng YUAN

doi:10.3788/YJYXS20193407.0676

您当前的位置：

首页 >

文章列表页 >

Research and improvement of bubble line in capacitive touch screen

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

- Research and improvement of bubble line in capacitive touch screen
- Chinese Journal of Liquid Crystals and Displays Vol. 34, Issue 7, Pages: 676-681(2019)
- 作者机构：
  
  重庆京东方光电科技有限公司, 重庆 400714
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20193407.0676
  CLC： TN27
- Received：16 February 2019，
  
  Accepted：29 April 2019，
  
  Published：05 July 2019
- 稿件说明：
移动端阅览
Xin LIU, Ni YANG, Hui LI, et al. Research and improvement of bubble line in capacitive touch screen[J]. Chinese journal of liquid crystals and displays, 2019, 34(7): 676-681.
DOI：

Xin LIU, Ni YANG, Hui LI, et al. Research and improvement of bubble line in capacitive touch screen[J]. Chinese journal of liquid crystals and displays, 2019, 34(7): 676-681. DOI： 10.3788/YJYXS20193407.0676.

摘要

在触控产品的制作过程中，气泡线不良严重影响着产品的外观品质。本文从气泡线的产生机理入手进行研究，发现该不良是由贴附偏光片时传感器保护层有机膜段差处与偏光片之间残留气泡导致。本文从设计面、工艺面对气泡线的影响因子进行了研究，实验发现有机膜边界设计位置、有机膜厚度、偏光片贴附相关工艺以及偏光片中PSA厚度对气泡线不良影响显著。其中有机膜边界设计位置远离显示区，降低有机膜与偏光片交叠宽度，可以使脱泡时气泡更容易排出而改善气泡线不良；降低有机膜厚度，可以减少偏光片贴附时有机膜断差位置气泡积累而改善气泡线不良；偏光片贴附相关工艺中增加贴附压力、降低贴附速度、增加脱泡时间，可以减少气泡积累以及增加排出而改善气泡线不良；增加偏光片中PSA胶层的厚度，可以在偏光片贴附时获得更大的弹性及压入量，减少气泡的积累而改善气泡线不良。研究结果表明，以上改善方法均能有效降低气泡线的发生率，实际生产时可采用组合对策，避免气泡线不良的发生。

Abstract

In the process of producing touch products

the appearance quality of the product was seriously affected by the poor bubble line. In this paper

the formation mechanism of bubble line was researched. When the polarizer was attached

the residual bubbles existed between the organic film segment of the sensor protective layer and the polarizer

which thereby caused such defect. The influence factors of the bubble line were studied from the point of design and the process. It is found that the boundary design position of organic film

the thickness of organic film

the related attaching process of polarizer and the PSA thickness in the polarizer have a significant adverse effect on the bubble line. After making the boundary design position of organic film far away from the AA zone and reducing the overlapping width between the organic film and the polarizer

the bubble can be discharged more easily during defoaming and the poor bubble line is improved accordingly. When attaching the polarizer

if the thickness of the organic film is reduced

the bubble accumulation on the position of the organic film gap is also reduced and the poor bubble line is improved. Furthermore

increasing the adhesion pressure

reducing the adhesion speed and increasing the defoaming duration

the bubble accumulation can be reduced and the bubble discharge can be increased to improve the poor bubble line. If the thickness of the PSA glue layer in the polarizer is increased

greater elasticity and indentation can be obtained

so the accumulation of bubbles can be reduced and the poor bubble line can be improved. The research results show that the above improvement methods can effectively reduce the incidence of bubble lines.

关键词

Keywords

references

吴烨.智能手机市场的发展分析研究[D].北京: 北京邮电大学, 2008: 11-20. http://cdmd.cnki.com.cn/Article/CDMD-10013-2008140193.htm

WU Y. The analysis and research of smart phone market[D]. Beijing: Beijing University of Posts and Telecommunications, 2008: 11-20. (in Chinese)

张子敬.触摸屏技术应用现状和未来发展趋势[J].科技视界, 2012(12):65-66.

ZHANG Z J. Application status and future development trend of touch screen technology[J]. Science & Technology View , 2012(12): 65-66. (in Chinese)

郑寿云.电容触摸屏的研究[D].汕头: 汕头大学, 2009: 8-16. http://cdmd.cnki.com.cn/Article/CDMD-10560-2010042581.htm

ZHENG S Y. Research on capacitive touch screen[D]. Shantou: Shantou University, 2009: 8-16. (in Chinese)

LEE J K, KIM S S, PARK Y I, et al . In-cell adaptive touch technology for a flexible e-paper display[J]. Solid-State Electronics , 2001, 56(1): 159-162.

马勇, 孔春阳.ITO薄膜的光学和电学性质及其应用[J].重庆大学学报:自然科学版, 2002, 25(8):114-117.

MA Y, KONG C Y. Electrical and optical properties and applications of In 2 O 3 :Sn (ITO) films[J]. Journal of Chongqing University ( Natural Science Edition ), 2002, 25(8): 114-117. (in Chinese)

熊智淳, 张哲娟, 茅艳婷, 等.基于ITO薄膜的透明LED显示屏的制作[J].液晶与显示, 2013, 28(5):703-706.

XIONG Z C, ZHANG Z J, MAO Y T, et al . Fabrication of transparent LED display baseB on ITO thin film[J]. Chinese Journal of Liquid Crystals and Displays , 2013, 28(5): 703-706. (in Chinese)

王芳, 杨长勇, 王晓燕, 等.ITO电极腐蚀现象及防护的研究[J].现代显示, 2008(12):50-51.

WANG F, YANG C Y, WANG X Y, et al . Discussion of ITO corrosion phenomenon and protection[J]. Advanced Display , 2008(12): 50-51. (in Chinese)

徐燕奇.TNLCDⅠ型线蚀的原因与防止措施[J].现代显示, 2008(7):37-40.

XU Y Q. Reasons of TNLCD ITO line corrosion and ways to avoid[J]. Advanced Display , 2008(7): 37-40. (in Chinese)

曹楚南.腐蚀电化学[M].北京:化学工业出版社, 1994.

CAO C N. Corrosion Electrochemistry [M]. Beijing: Chemical Industry Press, 1994. (in Chinese)

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Method of Pixel Mapping Between Capacitive Touch Screen and LCD

Related Author

HU Si-jie

GENG Wei-dong

SHANG Guang-hui

JIN Qing

Related Institution

Institute of Photo-Electronics Thin Film Devices and Technique of Nankai University

AI问答

Address：No.3888 Dong Nanhu Road, Changchun, Jilin, China 130033 Postal code：130033
Tel：0431-86176059 Email：yjxs@ciomp.ac.cn
Technical support is provided by Beijing Founder electronics co., LTD 吉ICP备11002662号-17 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰