Light guide plate with a reflective means and process for...

Details Light guide plate with a reflective means and process for... Light guide plate with a reflective means and process for...

2006-11-14

2006-11-14

Healy, Brian M. (Department: 2883)

Optical waveguides

Planar optical waveguide

C385S141000, C385S133000, C427S163100, C427S163400, C427S164000, C427S169000

Reexamination Certificate

active

07136562

ABSTRACT:
A process for forming a light guide plate with a reflection film includes: (a) providing a light guide plate (30), which has a light input surface (303) with light incident portions (3032), a bottom surface (304), a light output surface (301), and side surfaces (302); (b) attaching protection film (32) on the light incident portions and the light output surface; (c) providing a reflection solution; (d) dipping the light guide plate in the reflection solution; (e) removing the light guide plate from the reflection solution, and solidifying a portion of the reflection solution remaining on the light guide plate to thereby form a reflection film; and (f) removing the protection film to expose the light incident portions and the light output surface. Because the reflection film is directly attached to the light guide plate, there is no gap and no attendant leakage of light.

REFERENCES:
patent: 5509095 (1996-04-01), Baker et al.
patent: 6273577 (2001-08-01), Goto et al.
patent: 6572743 (2003-06-01), Miller et al.
patent: 6595651 (2003-07-01), Jeong et al.
patent: 6882762 (2005-04-01), Brist et al.
patent: 2004/0252958 (2004-12-01), Abu-Ageel
patent: 2005/0244126 (2005-11-01), Howard et al.

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