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1. (WO2010113879) LIQUID CRYSTAL DISPLAY DEVICE

Pub. No.:    WO/2010/113879    International Application No.:    PCT/JP2010/055577
Publication Date: Fri Oct 08 01:59:59 CEST 2010 International Filing Date: Tue Mar 30 01:59:59 CEST 2010
IPC: G02F 1/13357
F21S 2/00
F21V 3/00
G02B 5/02
F21Y 103/00
Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED
住友化学株式会社
YAMAHARA, Motohiro
山原 基裕
KANEMITSU, Akiyoshi
金光 昭佳
MIYAMOTO Tomonori
宮本 知典
Inventors: YAMAHARA, Motohiro
山原 基裕
KANEMITSU, Akiyoshi
金光 昭佳
MIYAMOTO Tomonori
宮本 知典
Title: LIQUID CRYSTAL DISPLAY DEVICE
Abstract:
Disclosed is a liquid crystal display device provided with a backlight device, wherein the lamp image is subdued without lowering the efficiency of utilization of the output light from the backlight device. The liquid crystal display device (100) is provided with a backlight device (2), a first light diffusing plate (3), prism sheets (4a, 4b), a first polarizing plate (5), a liquid crystal cell (1), a second polarizing plate (6), and a second light diffusing plate (7), in order of mention. The first polarizing plate (5) and the second polarizing plate (6) are so arranged that their absorption axes are in a crossed-Nicol relationship. The first light diffusing plate (3) has a characteristic that the ratio (I20/I0) between the intensity (I20) of the transmitted light exiting in a direction at an angle of 20° to the direction perpendicular to the back surface and the intensity (I0) of the transmitted light exiting in a direction at an angle of 0° to the direction perpendicular to the back surface when a parallel light beam is made to enter the first light diffusing plate (3) through the back surface is 75% or more. The second light diffusing plate (7) comprises a light diffusing layer (72) containing translucent resin (721) and translucent particles (722) dispersed in the translucent resin (721).