Direct-type backlight unit having surface light source

Details Direct-type backlight unit having surface light source Direct-type backlight unit having surface light source

2011-02-15

2011-02-15

Payne, Sharon E (Department: 2875)

Illumination

Light fiber, rod, or pipe

Illuminating or display apparatus

C362S555000, C362S558000

Reexamination Certificate

active

07887225

ABSTRACT:
In a direct-type backlight unit, a board has upper and lower surfaces defining a thickness therebetween. A plurality of unit light sources are disposed on the board. Here, in each of the unit light sources, a wiring pattern is formed on the board. A light emitting device is disposed on the wiring pattern to electrically connect thereto. A non-conductive side wall surrounds, without interruption, the light emitting device at a predetermined interval therefrom, the non-conductive side wall having a height lower than that of the light emitting device. Also, an encapsulant is formed in a dome shape inside the side wall. In this fashion, the light emitting devices are mounted on the board by a chip-on-board technique.

REFERENCES:
patent: 6188527 (2001-02-01), Bohn
patent: 6404131 (2002-06-01), Kawano et al.
patent: 6562643 (2003-05-01), Chen
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patent: 7316496 (2008-01-01), Wu et al.
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Japanese Office Action issued in Japanese Patent Application No. JP 2007-177181 dated Aug. 4, 2009.
Chinese Office Action, w/ English translation thereof, issued in Chinese Patent Application No. CN 200710130512X dated on Oct. 10, 2008.

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