Structure of a reflection-type light diffuser in a LCD

Details Structure of a reflection-type light diffuser in a LCD Structure of a reflection-type light diffuser in a LCD

1999-04-15

2000-12-19

Nguyen, Thong

Optical: systems and elements

Diffusing of incident light

359613, 349113, G02B 1320, G02F 11335

Patent

active

061634050

ABSTRACT:
The invention provides a method for fabricating reflection-type light diffuser which is a substrate having a plurality of bumpy elements with reflective curved surfaces. Each of the plurality of bumpy elements having a first surface and a second surface, the first angle (.alpha. or .theta.) between the first surface and the substrate is different from the second angle (.beta. or .phi.) between the second surface and the substrate. A Multi-Exposure Shift Method along with specially designed masks are proposed for manufacturing the curved reflective elements in the present invention. The invention can also be used in a traditional TFT-LCD, with the diffusive film layer eliminated, as an element between the liquid crystal layer and the active matrix.

REFERENCES:
patent: 3718078 (1973-02-01), Plummer
patent: 5124839 (1992-06-01), Yamazaki et al.
patent: 5189454 (1993-02-01), Yamazaki et al.
patent: 5526149 (1996-06-01), Kanbe et al.
patent: 5610741 (1997-03-01), Kimura

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