液晶表示装置 - Sharp Corporation

Title:

液晶表示装置

Document Type and Number:

Japanese Patent JP5307233

Kind Code:

B2

Abstract:

A VA-mode liquid crystal display device having a high display quality is provided. A liquid crystal display device according to the present invention includes a vertical alignment type liquid crystal layer; a first substrate and a second substrate facing each other with the liquid crystal layer interposed therebetween; a first electrode provided in the first substrate on the liquid crystal layer side and a second electrode provided in the second substrate on the liquid crystal layer side; and a first alignment film provided between the first electrode and the liquid crystal layer and a second alignment film provided between the second electrode and the liquid crystal layer. The liquid crystal display device includes a plurality of pixel areas located in a matrix. Each of the plurality of pixel areas includes a first liquid crystal domain in which a tilt direction of liquid crystal molecules at the center and in the vicinity thereof in a layer plane and in a thickness direction of the liquid crystal layer when a voltage is applied between the first electrode and the second electrode is a predetermined first direction, a second liquid crystal domain in which such a tilt direction is a predetermined second direction, a third liquid crystal domain in which such a tilt direction is a predetermined third direction and a fourth liquid crystal domain in which such a tilt direction is a predetermined fourth direction; a difference between any two among the first direction, the second direction, the third direction and the fourth direction is approximately equal to an integral multiple of 90°. The first liquid crystal domain is close to at least a part of the edges of the first electrode, and the at least a part includes a first edge portion, wherein an azimuthal angle component of an alignment regulation force caused by an oblique electric field generated in the vicinity of the first edge portion and an azimuthal angle component of an alignment regulation force caused by the second alignment film are opposite to each other. The second substrate includes a first rib provided in an area corresponding to the first edge portion.

Inventors:

Yohei Nakanishi
Masanobu Mizusaki
Takashi Katayama
Yuichi Kawahira

Application Number:

JP2011509208A

Publication Date:

October 02, 2013

Filing Date:

April 12, 2010

Export Citation:

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