Liquid crystal display device

• Main Authors: NAKAMURA KIMIAKI, TANUMA SEIJI, HANAOKA KAZUTAKA, USUI KENTARO
• Format: Patent
• Language: English
• Published: 29.01.2013
• Subjects: ADHESIVES; CHEMISTRY; 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; DYES; FREQUENCY-CHANGING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PAINTS; PHYSICS; POLISHES; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

A liquid crystal display device includes an alignment sustaining layer formed of a photopolymerized material on each of surfaces of a pair of alignment films which are closer to a liquid crystal layer. The alignment sustaining layer is configured to regulate a pretilt azimuth of a liquid crystal molecule of the liquid crystal layer during absence of an applied voltage. A nematic liquid crystal material of the liquid crystal layer comprise a liquid crystal compound having a terphenyl ring system as an indispensable component, and the liquid crystal layer further comprises part of a photopolymerizable compound. A content of the photopolymerizable compound relative to the nematic liquid crystal material is less than 0.015 mol %.