Illuminated electro-optical display apparatus

Details Illuminated electro-optical display apparatus Illuminated electro-optical display apparatus

G - Physics

02

F

375/39, 345/8

G02F 1/13 (2006.01) G02F 1/1335 (2006.01) G02F 1/13357 (2006.01)

Patent

CA 1081833

ILLUMINATED ELECTRO-OPTICAL DISPLAY APPARATUS ABSTRACT OF THE DISCLOSURE An improved illuminated electro-optical display system includes front and rear optically transmissive panels that are spaced apart in substantially parallel configuration. A liquid crystal composition occupies the space between the front and rear panels. Optically transmissive electrodes are disposed on the opposing surfaces of the front and rear panels. The electrodes are attached to suitable electrical leads whereby a voltage can be impressed between selected front and rear electrodes. A multi-cellular light diffusing panel is located behind the rear optically transmissive panel and a light source is located behind the multi-cellular light diffusing panel. Light from the light source is transmitted through the multi- cellular light diffusing panel, through the rear optically transmissive panel, through at least a portion of the liquid crystal composition and through at least a portion of the front optically transmissive panel. The light source can be a luminous radioactive panel or a light pipe plate disposed beneath the multi-cellular light diffusing panel with at least one light source adjacent an edge of the light pipe panel.

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