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Title:
PAIR OF POLARIZING PLATES, AND LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2007079115
Kind Code:
A
Abstract:

To provide a liquid crystal display device capable of reducing the light leakage and color shift in an oblique view for a black display.

A retardation plate 119 is disposed on the light emission side of a first polarizing plate 101, and has birefringence characteristics of 0-10 nm in-plane retardation and 0-35 nm retardation in a thickness direction. A retardation plate 117 and a retardation plate 118 are disposed on the light incidence side of a second polarizing plate 105. The retardation plate 117 has birefringence characteristics of 0-15 nm in-plane retardation and 50-123 nm retardation in the thickness direction, and further has a positive uniaxial optical characteristic, and is disposed in such a way that the optic axis is vertical to a polarizing layer surface. The retardation plate 118 has birefringence of 35-245 nm in-plane retardation, and is disposed in such a way that the optic axis with a larger refractive index out of the in-plane optic axes with the corresponding birefringence characteristics perpendicularly intersect a light absorption axis of the first polarization layer.


Inventors:
NAGAI HIROSHI
Application Number:
JP2005266723A
Publication Date:
March 29, 2007
Filing Date:
September 14, 2005
Export Citation:
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Assignee:
NEC LCD TECHNOLOGIES LTD
International Classes:
G02F1/1335; G02B5/30; G02F1/139
Domestic Patent References:
JP2005196149A2005-07-21
JP2005194452A2005-07-21
JP2005222004A2005-08-18
JP2006524347A2006-10-26
JP2005208356A2005-08-04
JPH11133408A1999-05-21
Attorney, Agent or Firm:
Kiyoshi Inagaki