Invention Grant
- Patent Title: Method for producing vertical alignment liquid crystal display
- Patent Title (中): 垂直取向液晶显示器的制造方法
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Application No.: US12860187Application Date: 2010-08-20
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Publication No.: US07880840B2Publication Date: 2011-02-01
- Inventor: Toshiaki Shibue , Makoto Honda , Nobuo Kubo , Noriyasu Kuzuhara , Hiroki Umeda , Sota Kawakami , Takatoshi Yajima
- Applicant: Toshiaki Shibue , Makoto Honda , Nobuo Kubo , Noriyasu Kuzuhara , Hiroki Umeda , Sota Kawakami , Takatoshi Yajima
- Applicant Address: JP Tokyo
- Assignee: Konica Corporation, A Corporation of Japan
- Current Assignee: Konica Corporation, A Corporation of Japan
- Current Assignee Address: JP Tokyo
- Agency: Lucas & Mercanti, LLP
- Priority: JP11-299901 19991021; JP11-316958 19991108
- Main IPC: G02F1/1335
- IPC: G02F1/1335

Abstract:
The method to produce the vertical alignment type liquid crystal display employs treating an optical film comprising of cellulous ester with an aqueous solution of sodium hydroxide to prepare an alkali-treated optical film; immersing a polyvinyl alcohol film in an aqueous solution containing iodine and boric acid; stretching the polyvinyl alcohol film to prepare a polarizing film; adhering the alkali-treated optical film onto both surfaces of the polarizing film to prepare a polarizing plate; and providing the polarizing plate on both surfaces of a vertical alignment type liquid crystal cell to providing the vertical alignment type liquid crystal display. At least one of the optical film has a retardation value (Rt value) in the thickness direction of from 60 to 300 nm, Rt=[(nx+ny)/2−nz]×d.
Public/Granted literature
- US20100314035A1 METHOD FOR PRODUCING VERTICAL ALIGNMENT LIQUID CRYSTAL DISPLAY Public/Granted day:2010-12-16
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