Invention Grant
- Patent Title: Liquid crystal display device and manufacturing method thereof
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Application No.: US16714083Application Date: 2019-12-13
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Publication No.: US10852589B2Publication Date: 2020-12-01
- Inventor: Noboru Kunimatsu , Masaki Matsumori , Hidehiro Sonoda , Yasushi Tomioka , Toshiki Kaneko
- Applicant: JAPAN DISPLAY INC.
- Applicant Address: JP Tokyo
- Assignee: Japan Display Inc.
- Current Assignee: Japan Display Inc.
- Current Assignee Address: JP Tokyo
- Agency: Ulmer & Berne LLP
- Priority: JP2011-046857 20110303
- Main IPC: G02F1/1337
- IPC: G02F1/1337 ; G02F1/1339 ; G02F1/1333 ; G02F1/1362 ; G02F1/1368 ; G02F1/1343

Abstract:
The present invention prevents the shaving of an alignment film caused by a columnar spacer in a liquid crystal display device of an IPS method using photo-alignment. A plinth higher than a pixel electrode is formed at a part where a columnar spacer formed over a counter substrate touches a TFT substrate. When an alignment film of a double-layered structure is applied over the pixel electrode and the plinth, the thickness of the alignment film over the plinth reduces by a leveling effect. When photo-alignment is applied in the state, a photodegraded upper alignment film over the plinth disappears and a lower alignment film having a high mechanical strength remains. As a result, it is possible to prevent the shaving of the alignment film.
Public/Granted literature
- US20200117058A1 LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF Public/Granted day:2020-04-16
Information query
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