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Patent Searching and Data


Title:
LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2008116725
Kind Code:
A
Abstract:

To provide a liquid crystal display device achieving natural and high-quality color display without showing a tinge of red not only in a frontal direction but in an oblique direction.

The liquid crystal display device 1 comprises a light diffusing plate 3, a light source 2 disposed in the backside of the light diffusing plate 3, and a VA (vertical alignment) liquid crystal panel 30 disposed in the front side of the light diffusing plate 3, and the light diffusing plate 3 comprises light diffusing particles dispersed in a transparent material, and when an absolute difference between the refractive index of the transparent material and the refractive index of the light diffusing particles is defined as n, and a cumulative 50% particle diameter of the light diffusing particles is defined as D50 (m), the relationship of 0.01nD500.25 or 0.61nD500.75 is established.


Inventors:
KANEMITSU AKIYOSHI
YAMAHARA MOTOHIRO
KUMAZAWA HIROYUKI
Application Number:
JP2006000300329
Publication Date:
May 22, 2008
Filing Date:
November 06, 2006
Export Citation:
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Assignee:
SUMITOMO CHEMICAL CO
International Classes:
G02F1/1335; G02B5/02; G02F1/13357
Domestic Patent References:
JP2005010509A2005-01-13
JP2001051268A2001-02-23
JP2006268060A2006-10-05
JP2006133567A2006-05-25
JPH026557A1990-01-10
JP2002365636A2002-12-18
JP2006124522A2006-05-18
Foreign References:
WO2005076058A12005-08-18
Attorney, Agent or Firm:
清水 久義
清水 義仁