Invention Grant
- Patent Title: System and method for protecting a liquid crystal display by controlling ion migration
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Application No.: US15428307Application Date: 2017-02-09
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Publication No.: US10429699B2Publication Date: 2019-10-01
- Inventor: Christopher Morgan Walker , Libo Weng , Oray Orkun Cellek , Ming Zhang , Yin Qian , Dyson Hsin-Chih Tai , Regis Fan
- Applicant: OmniVision Technologies, Inc.
- Applicant Address: US CA Santa Clara
- Assignee: OmniVision Technologies, Inc.
- Current Assignee: OmniVision Technologies, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Henneman & Associates, PLC
- Agent Larry E. Henneman, Jr.
- Main IPC: G02F1/1337
- IPC: G02F1/1337 ; G02F1/1333 ; G02F1/1362 ; G09G3/36

Abstract:
A liquid crystal display includes a display area and a border area at least partially surrounding the display area, where the display area displays images for viewing and the border area displays display-protection images, which are used to control ion migration in the liquid crystal layer. In a more particular embodiment, the border area displays a series of checkerboard pattern(s), where the checkerboard patterns can alternate between initial and inverted values. The display-protection images protect the liquid crystal display from migrating ions accumulating in particular regions of the pixel array and causing permanent defects in the display area. A liquid crystal display that includes a liquid crystal alignment layer having a plurality of liquid crystal alignment directions is also disclosed. The customized liquid crystal alignment director(s) over the border area promote ion migration away from the display area.
Public/Granted literature
- US20180143498A1 System and Method for Protecting a Liquid Crystal Display by Controlling Ion Migration Public/Granted day:2018-05-24
Information query
IPC分类: