Direct type back light unit for liquid crystal display device

Details Direct type back light unit for liquid crystal display device Direct type back light unit for liquid crystal display device

2010-09-01

2011-11-08

Husar, Stephen F (Department: 2875)

Illumination

Display backlight

Lcd backlight

C362S030000, C362S217090, C362S260000, C362S355000, C349S061000, C349S187000, C359S015000, C359S599000

Reexamination Certificate

active

08052294

ABSTRACT:
A back light unit for a liquid crystal display device for improving uniformity of the light and dispensing with optical sheets. The back light unit includes a light source having a holographic pattern formed on a surface thereof opposite the display device which is to display a picture, and a reflective plate under the light source.

REFERENCES:
patent: 5418631 (1995-05-01), Tedesco
patent: 5461279 (1995-10-01), Hasegawa
patent: 5471327 (1995-11-01), Tedesco et al.
patent: 5956106 (1999-09-01), Petersen et al.
patent: 7473009 (2009-01-01), Lee et al.
patent: 2005/0218810 (2005-10-01), Kwok et al.
patent: 2001-013497 (2001-01-01), None
patent: 10-2004-0013020 (2004-02-01), None

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