Backlight module having two optical sheets

Details Backlight module having two optical sheets Backlight module having two optical sheets

2007-11-08

2010-06-22

O'Shea, Sandra L (Department: 2875)

Illumination

Edge lighted panel

Housing

C362S632000, C362S633000, C362S097100, C362S097400, C349S058000

Reexamination Certificate

active

07740394

ABSTRACT:
A backlight includes a case, pluralities of light sources, pluralities of needles, pluralities of supporting portions, a first optical sheet, a second optical sheet, and pluralities of first microstructures. The light sources are disposed inside the case, the needles are disposed on the bottom surface of the case, and the supporting portions are disposed on the needles. The first optical sheet is supported on the top of the needles. The second optical sheet placed under the first optical sheet has pluralities of holes, and the needles penetrate the holes. The second optical sheet is supported on the supporting portions. The first microstructures are disposed on the first optical sheet or on the second optical sheet to provide a light condensing function.

REFERENCES:
patent: 7163319 (2007-01-01), Kuo et al.
patent: 7510317 (2009-03-01), Murakami et al.
patent: 2007/0019419 (2007-01-01), Hafuka et al.
patent: 2007/0201246 (2007-08-01), Yeo et al.

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