Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
LED BACK LIGHT
Document Type and Number:
Japanese Patent JP2002350846
Kind Code:
A
Abstract:

To provide an LED back light which can represent intermediate colors without lowering the luminance by using LEDs of different colors of red, green, blue, and white.

On the reverse surface side of a flat plate type quadrangular LCD 1, a flat plate type quadrangular light guide plate 3 is arranged, and four kinds of LEDs (red LED 5a, blue LED 5b, green LED 5c, and white LED 5d) having the mutually different light emission colors and four flank parts of this light guide plate 3 are arranged corresponding to each other one to one.


Inventors:
TAKEGUCHI AKITAKA
Application Number:
JP2001152640A
Publication Date:
December 04, 2002
Filing Date:
May 22, 2001
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
YAZAKI CORP
International Classes:
F21V8/00; F21V19/00; G02F1/1335; G02F1/13357; G09F9/00; G09G3/10; G09G3/34; H01L33/48; F21Y101/02; G02B6/00; G09G5/02; (IPC1-7): G02F1/13357; F21V8/00; G02F1/1335; G09F9/00; H01L33/00
Attorney, Agent or Firm:
Hidekazu Miyoshi (8 outside)