Transparent and spread illuminating apparatus

Details Transparent and spread illuminating apparatus Transparent and spread illuminating apparatus

1999-01-25

2000-07-11

Dudek, James A.

Liquid crystal cells, elements and systems

Particular structure

Particular illumination

349 63, 349113, 385901, 362 31, 362297, G02F 11335, F21V 704, F21V 700

Patent

active

060880740

ABSTRACT:
In a transparent and spread illuminating apparatus closely disposed to cover a surface of a reflection type liquid-crystal display device, a transparent substrate 2 which covers an observation face F of a reflection type liquid crystal display element L is disposed, a light reflection pattern 11 is formed on a top surface 6 of the transparent substrate 2, the light reflection pattern 11 is formed of a plurality of recesses 12 formed at given intervals P1 in parallel with the axial direction of the light source lamp 4 disposed along one side end surface 3, in which assuming that intervals between stripes which are in parallel with the recesses 12 in the arrangement of liquid cells of the reflection type liquid-crystal display device L are P2, the intervals P1 are set to satisfy a relation between P1 and P2:

REFERENCES:
patent: 5339179 (1994-08-01), Rudisill et al.
patent: 5664873 (1997-09-01), Kanda et al.
patent: 5746493 (1998-05-01), Jonsson et al.

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