Patent ID: 8907938
Filing Date: 2014-12-09
Classification: G02F

Abstract:
1. A liquid crystal display device, comprising: a pair of substrates disposed to face each other, and a liquid crystal layer sandwiched between the pair of substrates, wherein one of the pair of substrates includes a pair of electrodes in pixel, each of the electrodes including a comb-tooth portion, a first comb-tooth portion of one of the pair of electrodes and a second comb-tooth portion of the other one of the pair of electrodes are disposed to face each other, the liquid crystal layer includes p-type nematic liquid crystals and is driven by an electric field generated between the pair of electrodes, the p-type nematic liquid crystals are aligned perpendicularly to surfaces of the pair of substrates when no voltage is applied, the distance between the pair of electrodes in a transverse direction of the comb-tooth portions of the pair of electrodes is at most 6 μm, a rotational viscosity of the p-type nematic liquid crystals is at least 130 mPa·s; wherein a blank portion of the pair of electrodes is provided adjacent to at least one of the first comb-tooth portion and the second comb-tooth portion of the pair of electrodes, the blank portion is positioned in the transverse direction of the comb-tooth portion that the blank portion is adjacent to, the blank portion includes an equally-distanced portion having a constant length in the transverse direction of the comb-tooth portion that the blank portion is adjacent to; wherein the distance between the pair of electrodes changes along a longitudinal direction of the comb-tooth portions of the pair of electrodes, the pair of electrodes include a first part in which the pair of electrodes face each other with a first distance between them; a second part in which the pair of electrodes face each other with a second distance smaller than the first distance between them; and a third part in which the pair of electrodes face each other with a third distance smaller than the first distance between them, the second part, the first part, and the third part are adjacent one another in said order in the longitudinal direction of the comb-tooth portions of the pair of electrode, and the equally-distanced portion is adjacent to the first part.