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1. (WO2001031391) LIQUID CRYSTAL DISPLAY

Pub. No.:    WO/2001/031391    International Application No.:    PCT/JP2000/007629
Publication Date: Fri May 04 01:59:59 CEST 2001 International Filing Date: Tue Oct 31 00:59:59 CET 2000
IPC: G02F 1/13363
G02F 1/139
Applicants: CITIZEN WATCH CO., LTD.

YAMAGUCHI, Toru

Inventors: YAMAGUCHI, Toru

Title: LIQUID CRYSTAL DISPLAY
Abstract:
A polarizer (11) is disposed through a twist phase plate (12) on the viewed side of a liquid crystal element (21) including a reflective layer (7). The direction of the twist phase plate (12) is opposite to that of the liquid crystal element (21). The alignment angle α of the twist phase plate (12) is in the range from 80 to 100° ; and that $g (b) of the polarizer (11) is in the range from 60 to 75° . The twist angle Tc of the twist phase plate (12) is 0.7 to 0.8 times that Ts of the liquid crystal element (21). The twist phase plate (12) exhibits a birefringence Δnd (Rc) 0.1 to 0.15 νm smaller than Δnd (Rs) of the liquid crystal element (21). As a result, high contrast of reflection display is achieved.