On-Line Measurement System of Liquid Crystal Cell Gap Based on Image Recognition

CHEN Hong-cai; ZHANG Rong-xue

doi:10.3788/YJYXS20112604.0561

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On-Line Measurement System of Liquid Crystal Cell Gap Based on Image Recognition

Imaging Technology & Image Processing | 更新时间：2020-08-12

- On-Line Measurement System of Liquid Crystal Cell Gap Based on Image Recognition
- Chinese Journal of Liquid Crystals and Displays Vol. 26, Issue 4, Pages: 561-564(2011)
- 作者机构：
  
  1. 韩山师范学院物理与电子工程系,广东潮州 521041
  2. 创佳电子有限公司,广东潮州,521000
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20112604.0561
  CLC： TN27;TP311.52
- Received：18 March 2011，
  
  Revised：25 May 2011，
  
  Published Online：20 August 2011，
  
  Published：20 August 2011
- 稿件说明：
移动端阅览
陈洪财, 张荣学. 基于图像识别的液晶盒厚在线测量系统[J]. 液晶与显示, 2011,26(4): 561-564

CHEN Hong-cai, ZHANG Rong-xue. On-Line Measurement System of Liquid Crystal Cell Gap Based on Image Recognition[J]. , 2011,26(4): 561-564
陈洪财, 张荣学. 基于图像识别的液晶盒厚在线测量系统[J]. 液晶与显示, 2011,26(4): 561-564 DOI： 10.3788/YJYXS20112604.0561.

CHEN Hong-cai, ZHANG Rong-xue. On-Line Measurement System of Liquid Crystal Cell Gap Based on Image Recognition[J]. , 2011,26(4): 561-564 DOI： 10.3788/YJYXS20112604.0561.

摘要

从光干涉条纹图像的CCD获取出发

进行Canny算法优化处理

并以FPGA为核心芯片设计了液晶盒厚测量系统。实验结果表明

本系统具有误差小、设备简单、操作快捷等特点

在满足液晶盒厚在线自动测量的同时

相对标准差提高到0.02%以上

可以满足液晶显示器件生产厂家盒厚实时监控的需要。

Abstract

The cell gap measurement system of LCD was designed using FPGA as the core chip

in which the image of lights interferences stripe was obtained by using CCD. And it was optimized by the Canny algorithm. It was found that the system has many advantages such as less error

simple structure and easy to run. As a result

the system can be used as on-line automatic measurement system of LCD cell gap

and the relative standard deviation of it can be increased to more than 0.02%

which implies that the system can be used in the monitoring of LCD cell gap.

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references

黄晓银,童纪雄.STN盒边框均匀性及稳定性改善[J]. 液晶与显示, 2004,19(1):68-71.[2] 吴洪江,王威,龙春平.一种TFT-LCD vertical block mura的研究与改善[J]. 液晶与显示, 2007,22(4):427-433.[3] 任芝,张志东.手性垂直排列液晶盒的视角特性[J]. 液晶与显示, 2005,20(1):32-35.[4] 程鸿飞,高鸿锦.反射式扭曲向列相液晶显示器工作模式的演化[J]. 液晶与显示, 2001,16(1):38-42.[5] 邱永亮,李荣玉,顾筠筠.TFT-LCD制造过程中的盒厚控制工艺研究[J]. 现代显示, 2008,(89):33-36. 第26卷第4期2011年8月液晶与显示 Chinese Journal of Liquid Crystals and Displays Vol.26,No.4Aug.,2011

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Related Institution

Changchun Institute of Optics， Fine Mechanics and Physics， Chinese Academy of Sciences

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Key Laboratory of Advanced Display and System Applications of Ministry of Education， Shanghai University

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