Liquid crystal display device

Details Liquid crystal display device Liquid crystal display device

2005-09-13

2005-09-13

Kim, Robert H. (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S065000, C349S070000, C362S613000, C362S623000

Reexamination Certificate

active

06943857

ABSTRACT:
In a liquid crystal display device comprising a pair of linear light source arranged at respective side surface of a light guide plate opposite to one another and having brightness irregularity along longitudinal axes thereof, the present invention arranges the linear light sources to dispose respective ends thereof towards which the brightness thereof is decreased gradually diagonally over a main surface of the light guide plate, and provide two-dimensional optical reflection or diffusion pattern density of which is varied in accordance with the brightness irregularity thereof on at least one surface of the light guide plate, an optical diffusion sheet, or an optical reflection plate. The brightness irregularity appearing in a display screen of the liquid crystal display device due to the brightness irregularity of the linear light source is eliminated by the present invention.

REFERENCES:
patent: 5178447 (1993-01-01), Murase et al.

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