Back lighting device for a liquid crystal panel

Details Back lighting device for a liquid crystal panel Back lighting device for a liquid crystal panel

1989-08-14

1990-06-26

Lazarus, Ira S.

Illumination

Revolving

362223, F21V 800

Patent

active

049377094

ABSTRACT:
A back lighting device for a liquid crystal display has a light scattering coating in the form of dots covering the light emitting surface of a photo-conductive plate. The coating covers 3-50% of the surface nearest an end thereof adjacent a linear light source and covers 80-100% of the surface farthest from the light source. The variation of the coating rate across the surface produces uniform distribution of emitted light from the back lighting device.

REFERENCES:
patent: 2347665 (1944-05-01), Christensen et al.
patent: 3132810 (1964-05-01), Ostensen
patent: 4729067 (1988-03-01), Ohe
patent: 4811507 (1989-03-01), Blanchet
patent: 4860171 (1989-08-01), Kojima

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