Invention Grant
- Patent Title: Front plate of TN liquid crystal display device
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Application No.: US13879176Application Date: 2011-09-22
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Publication No.: US09857516B2Publication Date: 2018-01-02
- Inventor: Koshi Koide , Osamu Kakinoki
- Applicant: Koshi Koide , Osamu Kakinoki
- Applicant Address: JP Tokyo JP Saitama
- Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.,MGC FILSHEET CO., LTD.
- Current Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.,MGC FILSHEET CO., LTD.
- Current Assignee Address: JP Tokyo JP Saitama
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JP2010-230613 20101013
- International Application: PCT/JP2011/072489 WO 20110922
- International Announcement: WO2012/049977 WO 20120419
- Main IPC: F21V8/00
- IPC: F21V8/00 ; G02B1/14 ; G02B1/10 ; G02B5/30 ; G02F1/1333 ; G02F1/1335 ; G02F1/13363 ; G02F1/139 ; G02B27/22 ; G02B27/26

Abstract:
The problem is to provide a front plate of a TN liquid crystal display device capable of reducing occurrence of color unevenness caused by retardation of a polycarbonate resin sheet, even when the liquid crystal panel is observed through polarizing glasses or liquid crystal shutter glasses for 3D, while having excellent impact resistance, heat resistance and transparency.The solution means are that the direction of the slow axis or the fast axis of a polycarbonate resin sheet is parallel to the lengthwise direction of a TN liquid crystal panel, and that retardation is not less than 5000 nm.
Public/Granted literature
- US20130272020A1 FRONT PLATE OF TN LIQUID CRYSTAL DISPLAY DEVICE Public/Granted day:2013-10-17
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