Title:
TRANSMISSIVE LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2007/004399
Kind Code:
A1
Abstract:
Provided is a transmissive liquid crystal display device, which has a high contrast ratio
over a wide operation range in IPS mode and displays an excellent image even when
viewed from a diagonal direction. In the transmissive liquid crystal display device,
the both sides of a liquid crystal cell driven in IPS mode are provided with a retardation
film (3), having an Nz3 value of 0 to 0.35 and an in-plane phase difference
of 60 to 450nm, and a retardation film (4), having an Nz4 value of 0.8
to 1.2 and an in-plane phase difference of 60-450nm, respectively. On at least
one plane, which is of a polarizing plate stacked on the retardation film and on
the side of the liquid crystal cell, a transparent protection film (1-2) having
an in-plane phase difference of 0 to 5nm and a phase difference of -20 to 20nm in
the thickness direction is arranged.
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Inventors:
TAKIMOTO MASATAKA (JP)
OKA SHIGEKI (JP)
TAKEBE TAKASHI (JP)
SHIMIZU KUNIO (JP)
OKA SHIGEKI (JP)
TAKEBE TAKASHI (JP)
SHIMIZU KUNIO (JP)
Application Number:
PCT/JP2006/311983
Publication Date:
January 11, 2007
Filing Date:
June 15, 2006
Export Citation:
Assignee:
KONICA MINOLTA OPTO INC (JP)
TAKIMOTO MASATAKA (JP)
OKA SHIGEKI (JP)
TAKEBE TAKASHI (JP)
SHIMIZU KUNIO (JP)
TAKIMOTO MASATAKA (JP)
OKA SHIGEKI (JP)
TAKEBE TAKASHI (JP)
SHIMIZU KUNIO (JP)
International Classes:
G02F1/1335; G02B5/30; G02F1/13363
Foreign References:
| JP2005173220A | 2005-06-30 | |||
| JP2005099476A | 2005-04-14 | |||
| JP2005009945A | 2005-01-13 |
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