Chinese Journal of Liquid Crystals and Displays, Volume. 37, Issue 12, 1561(2022)
Research and application of detecting accurate defect coordinates for large size LCD panel
Fig. 1. Hardware implementation scheme of defect automatic addressing system
Fig. 2. Software implementation scheme of defect automatic addressing system
Fig. 3. Scheme of manual visual detection and confirmation of defect initial coordinates
Fig. 4. Scheme of automatic optical detection and confirmation of defect initial coordinates
Fig. 5. （a）Defect image of pixel；（b）Image of cross cursor non-coincided with pixel；（c）Image of cross cursor coincided with pixel.
Fig. 7. （a）Defect image of Data Open；（b）Image of cross cursor non-coincided with Data Open；（c）Diagram of the calculated coordinate of Date Open defect on the picture；（d）Diagram of the calculated coordinates of the cross cursor on the picture；（e）Image of cross cursor coincided with Data Open.
Fig. 8. （a）Defect image of X-line；（b）Image of cross cursor non-coincided with X-line；（c）Image of cross cursor coincided with X-line.
Fig. 9. （a）Defect image of Data Gate Short；（b）Image of cross cursor non-coincided with Data Gate Short；（c）Image of cross cursor coincided Data Gate Short.
Fig. 10. （a）Defect image of Particle Gap；（b）Image of cross cursor non-coincided with Particle Gap；（c）Image of cross cursor coincided Particle Gap.
Table 1. Accuracy results of defect addressing
View tableView in ArticleTable 1. Accuracy results of defect addressing
序号 缺陷类型 尺寸/mm 分辨率/PPI 测试次数 成功次数 准确率/% 1 亮点 1 651 3 840×2 160 1 000 1 000 100 2 1 905 1 000 1 000 100 3 Data Open 1 651 3 840×2 160 1 000 1 000 100 4 1 905 1 000 1 000 100 5 X-line 1 651 3 840×2 160 1 000 1 000 100 6 1 905 1 000 1 000 100 7 Data Gate Short 1 651 3 840×2 160 1 000 1 000 100 8 1 905 1 000 1 000 100 9 Particle Gap 1 651 3 840×2 160 1 000 1 000 100 10 1 905 1 000 1 000 100
Table 2. Comparison of defect addressing methods
View tableView in ArticleTable 2. Comparison of defect addressing methods
序号 定址方法 定址方式 定址耗时/s 准确性/% 1 人工视觉 人工 90 70 2 自动光学检查机 自动化 18 20 3 缺陷自动定址系统 自动化 20 100
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Jun ZHANG, Zhong-fa ZHU, Jin ZHOU, Cheng LIU, Jin-liang SUO, Bin WANG, Zhu-bing HUANG. Research and application of detecting accurate defect coordinates for large size LCD panel[J]. Chinese Journal of Liquid Crystals and Displays, 2022, 37(12): 1561
Category: Research Articles
Received: Aug. 8, 2022
Accepted: --
Published Online: Nov. 30, 2022
The Author Email: Zhong-fa ZHU (zhuzhongfa@boe.com.cn)
