Planar illumination device and liquid crystal display device...

Details Planar illumination device and liquid crystal display device... Planar illumination device and liquid crystal display device...

2006-12-19

2010-11-23

Ton, Anabel M (Department: 2875)

Illumination

Edge lighted panel

Light source

C362S612000, C362S610000

Reexamination Certificate

active

07837375

ABSTRACT:
A planar illumination device is provided that can achieve even distributions of mixed colors and luminance, downsizing and weight saving without lowering the luminous efficiency of LED chips. In addition, a liquid crystal display device using the planar illumination device as a backlight is provided.A polygonal flat plate-like light guide plate GLB is combined with a plurality of LED chips D1,D2,D3emitting light with different colors from each other to constitute a color mixing unit DUT. A plurality of the color mixing units are arranged on printed circuit boards RFB having a reflection function to constitute a planar illumination device. The planer illumination device is installed on the back of a liquid crystal display panel, thus constituting a liquid crystal display device.

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