LIQUID CRYSTAL DISPLAY DEVICE AND ELLIPTIC POLARIZER

PROBLEM TO BE SOLVED: To provide a liquid crystal display device of which the CR viewing angle as well as the gradation inversion angle are improved. SOLUTION: The liquid crystal display device includes a pair of substrates 10 and 14 opposed to each other at least one of which has an electrode, a li...

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Bibliographic Details
Main Authors OHASHI YUSUKE, HIRAKATA JUNICHI
Format Patent
LanguageEnglish
Published 06.04.2006
Subjects
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING
FREQUENCY-CHANGING
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICAL LOGIC ELEMENTS
OPTICS
PHYSICS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Summary:PROBLEM TO BE SOLVED: To provide a liquid crystal display device of which the CR viewing angle as well as the gradation inversion angle are improved. SOLUTION: The liquid crystal display device includes a pair of substrates 10 and 14 opposed to each other at least one of which has an electrode, a liquid crystal layer 12 of which the alignment is controlled by axes 11 and 13 of alignment which opposed faces of the pair of substrates have, a pair of a group of polarizers 1 to 6 and a group of polarizers 18 to 23 which are disposed with the liquid crystal layer 12 between them, and optical anisotropic layers 7 and 15 each of which consists of at least single layer and is provided between the liquid crystal layer and at least one of the pair of polarizers. Axes 8 and 16 of extinction of the optical anisotropic layers 7 and 15 cross the axes 11 and 13 of alignment of substrates 10 and 14 nearer to the layers respectively, and in-plane retardation of the optical anisotropic layers 7 and 15 is 30 to 80 nm, and the liquid crystal layer 12 has an alignment state varied in accordance with electric field application, whereby in-plane retardation of the liquid crystal layer 12 is varied, and a difference between the in-plane retardation of the optical anisotropic layers and that of the liquid crystal layer is minimum when a transmittance is minimum. COPYRIGHT: (C)2006,JPO&NCIPI
Bibliography:Application Number: JP20040279868