Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2005-12-27
2005-12-27
Chowdhury, Tarifur R. (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S065000
Reexamination Certificate
active
06980271
ABSTRACT:
A reflective or semi-transmissive type LCD device reduces a moiré generated by the irregularity pattern of the reflector plate of the LCD panel. A front light has an optical guide plate in which prism grooves are arranged in an arrangement direction. The pattern of the reflector plate is formed by blocks, each of which includes a basic irregularity pattern for one pixel or its element, and (N−1) modified basic irregularity pattern or patterns each formed by modifying the basic irregularity pattern. All the basic irregularity patterns in each block are arranged in a direction perpendicular to the arrangement direction. The basic irregularity pattern is continuous at either end thereof in the arrangement direction. The basic irregularity pattern is divided in the arrangement direction into N sub-patterns. Each of the (N−1) modified basic irregularity patterns is formed by the N sub-patterns circularly shifted one by one.
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Chowdhury Tarifur R.
McGinn & Gibb PLLC
NEC LCD Technologies Ltd.
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