Toshiba Matsushita Display Technology Co., Ltd.

Japan Display Inc.

Japan Display Central Inc.

Norihiro Yoshida

Arihiro Takeda

Yoshitaka Yamada

Jin Hirosawa

Yasushi Kawata

Akio Murayama

Kisako Ninomiya

Takeshi Yamaguchi

Yoshihiro Watanabe

Hirokazu Morimoto

Ryoichi Watanabe

Yuuzo Hisatake

Masaki Kinoshita

Sadayasu Fujibayashi

Masaki Obi

Chigusa Tago

Takashi Mitsumoto

An MVA mode liquid crystal display device has a liquid crystal layer including liquid crystal molecules having negative dielectric constant anisotropy held between a first substrate and a second substrate. It includes a structural body which controls an alignment direction of the liquid crystal molecules to form a multi-domain in each of pixels. The structural body includes a first structural body which overlaps a light-blocking wiring line, and a second structural body which is disposed in a direction substantially perpendicular to the first structural body and is narrower than the first structural body.

Liquid crystal display device

An MVA mode liquid crystal display device is configured such that a liquid crystal layer including liquid crystal molecules having negative dielectric constant anisotropy is held between a first substrate and a second substrate. The liquid crystal display device includes a structural body which controls an alignment direction of the liquid crystal molecules in a manner to form a multi-domain in each of pixels. The structural body includes a first structural body which is disposed in a manner to overlap a light-blocking wiring line, and a second structural body which is disposed in a direction substantially perpendicular to the first structural body and is formed to be narrower than the first structural body.

A liquid crystal display device includes an array substrate and a counter-substrate, a liquid crystal layer which is held between the array substrate and counter-substrate and includes a transmissive display part and a reflective display part which neighbor each other via a boundary, an alignment state of liquid crystal molecules in the liquid crystal layer being controlled by an application voltage from the array substrate and counter-substrate in the transmissive display part and the reflective display part, and control means for making an alignment direction of the liquid crystal molecules, which are present near the boundary in the reflective display part, substantially match an alignment direction of the liquid crystal molecules which are present near the boundary in the transmissive display part.

A liquid crystal display device has a gradation display function of at least an n-number of gray levels and has a viewing angle characteristic of Mi/Mj&#x2266;1.3 in a case where a display luminance range in a normal direction to a display surface in a gradation range of predetermined gray levels i to j is Li to Lj and a display luminance range in an oblique viewing-angle direction of 30&#xb0; or more is Mi to Mj (where n, i and j are real numbers, and n&#x2267;i&#x3e;j&#x2267;0). The liquid crystal display device has a display mode in which a display image is displayed with a display luminance range of the display image being limited to Li to Lj.

A liquid crystal display device comprises a first substrate including a first insulation substrate, and rectangular pixel electrodes provided in a matrix on the first insulation substrate and elongated in a first direction, a second substrate opposing the first substrate, and including a second insulation substrate, a counter electrode on the second insulation substrate, and projections on the counter electrode, elongated in a second direction intersecting the first direction, and a liquid crystal layer held between the first and second substrates. The projections extend through pixel regions defined by the pixel electrodes and counter electrode, and are formed asymmetrical with respect to a first imaginary line passing through centers of opposite short sides of each pixel electrode and extending in the first direction, and with respect to a second imaginary line passing through centers of opposite long sides of each pixel electrode and extending in the second direction.

A liquid crystal display apparatus comprising a liquid crystal display panel and an optical unit. The liquid crystal display panel includes a first substrate, a second substrate, a plurality of pixel electrodes, and a plurality of projections. Each of the pixel electrodes has a major axis that is 160 &#x3bc;m or less long. A value obtained by dividing a height of the projections by a gap d between the first and second substrates is 0.14 to 0.6. The projections are 15 &#x3bc;m or less wide as measured in the first direction. The apparatus satisfied the relation of MIN (la, lb)/d&#x3c;10.

Liquid crystal display apparatus

In order to achieve high display quality level in both of the reflective and transmissive regions without providing steps in the liquid crystal layer, in the reflective region for display with light reflected from a metallic auxiliary capacitance line, a part of a transparent pixel electrode overlaps the auxiliary capacitance line. An electric field generated between the pixel electrode and the counter electrode inclines liquid crystal molecules in the liquid crystal layer in a region where the pixel electrode overlaps the auxiliary capacitance line, and an oblique electric field generated between an end portion of the pixel electrode and the counter electrode inclines liquid crystal molecules in the liquid crystal layer in a region where the pixel electrode does not overlap the auxiliary capacitance line. Thereby, the phase differences in light passing through the reflective region is close to that in light passing through the transmissive region.

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Kumagaya, Japan

Norihiro Yoshida