Liquid crystal display device

• Main Authors: ARATANI, SUKEKAZU, ARAYA, KOTARO, KONDO, KATSUMI, TAKEDA, SHINTARO, KAGAWA, HIROYUKI
• Format: Patent
• Language: English; French; German
• Published: 06.09.2000
• Edition: 7
• 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; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; 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 comprises a pair of substrates (101, 101') whose spacing is determined by spacers (1412, 1711) placed in a non-displaying region, a liquid crystal layer (106) filled in the space between said pair of substrates, a set of electrodes (102, 103) formed on the surface of one of the substrates of said pair of substrates for applying an electric field to said liquid crystal layer, and a pair of optical polarizers (109, 109') placed so that they enclose said liquid crystal layer and with their axes of polarization almost at right angles to each other. The liquid crystal layer contains 40% or more weight percentage or 100% or less weight percentage of a constituent component with a dielectric anisotropy of DELTA epsilon ≤ 1, and the directions of controlled orientation of liquid crystal molecules at the two surfaces between said liquid crystal layer and said pair of substrates is almost parallel. The axis of polarization of one of the polarizers is almost aligned with the direction of controlled orientation of liquid crystal molecules at said surfaces.