Title:
LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/105428
Kind Code:
A1
Abstract:
The present invention provides a liquid crystal display device which is suppressed in light leakage and has improved CR. One embodiment of the present invention is a liquid crystal display device which is sequentially provided with a first polarizer, a first birefringent layer of a first type, a liquid crystal cell and a second polarizer in this order from the back surface side. The liquid crystal cell comprises a pair of substrates that face each other and a liquid crystal layer that is held between the substrates. The in-plane slow axis of the first birefringent layer of a first type is substantially parallel to the absorption axis of the second polarizer, and the absorption axis of the first polarizer is substantially perpendicular to the absorption axis of the second polarizer. When the NZ coefficient of the first birefringent layer of a first type is represented by NZ11 and the in-plane retardation is represented by R11, (1) 0 < NZ11 ≤ 0.5 and (2) 220 nm ≤ R11 ≤ 320 nm are satisfied.
Inventors:
SAKAI AKIRA
SAKURAGI KAZUYOSHI
HASEGAWA MASAHIRO
SAKURAGI KAZUYOSHI
HASEGAWA MASAHIRO
Application Number:
PCT/JP2012/051753
Publication Date:
August 09, 2012
Filing Date:
January 27, 2012
Export Citation:
Assignee:
SHARP KK (JP)
SAKAI AKIRA
SAKURAGI KAZUYOSHI
HASEGAWA MASAHIRO
SAKAI AKIRA
SAKURAGI KAZUYOSHI
HASEGAWA MASAHIRO
International Classes:
G02F1/1335; G02B5/20; G02B5/30; G02F1/13363
Foreign References:
| JP2001350022A | 2001-12-21 | |||
| JP2010039432A | 2010-02-18 | |||
| JP2003321634A | 2003-11-14 |
Attorney, Agent or Firm:
YASUTOMI & Associates (JP)
Patent business corporation Yasutomi international patent firm (JP)
Patent business corporation Yasutomi international patent firm (JP)
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