Laminated quarter-wave plate or circularly polarizing plate,...

Details Laminated quarter-wave plate or circularly polarizing plate,... Laminated quarter-wave plate or circularly polarizing plate,...

2006-04-04

2006-04-04

Ton, Toan (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S118000, C359S490020

Reexamination Certificate

active

07023513

ABSTRACT:
A laminated quarter-wave plate having: a laminate of a quarter-wave plate and a half-wave plate, wherein: the quarter-wave plate and the half-wave plate are laminated on each other so that directions of in-plane slow axes intersect each other; and each of the quarter-wave plate and the half-wave plate satisfies a relation Nz=(nx−nz)/(nx−ny)>1.05 in which nx and ny are in-plane main refractive indices, and nz is a thicknesswise refractive index; and a circularly polarizing plate having: a laminate of a laminated quarter-wave plate defined above and a polarizer.

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