Invention Application
- Patent Title: Image sticking measurement method for liquid crystal display device
- Patent Title (中): 液晶显示装置的图像粘贴测量方法
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Application No.: US09977377Application Date: 2001-10-16
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Publication No.: US20020153920A1Publication Date: 2002-10-24
- Inventor: Man-Hoan Lee
- Applicant: LG.PHILIPS LCD CO., LTD
- Applicant Address: null
- Assignee: LG.PHILIPS LCD CO., LTD
- Current Assignee: LG.PHILIPS LCD CO., LTD
- Current Assignee Address: null
- Priority: KR2000-62314 20001023
- Main IPC: G01R031/00
- IPC: G01R031/00

Abstract:
A method for measuring an image sticking defect in a liquid crystal display device includes the steps of grounding a liquid crystal cell, the liquid crystal cell includes an alignment layer, applying a first alternating current voltage to the liquid crystal cell, measuring a first capacitance of the liquid crystal cell, applying an electrical stress to the liquid crystal cell, measuring a second capacitance of the liquid crystal cell, and calculating a capacitance difference between the first capacitance and the second capacitance.
Public/Granted literature
- US06590411B2 Image sticking measurement method for liquid crystal display device Public/Granted day:2003-07-08
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