Sharp Display Technology Corporation

Takehisa Yoshida

Fumikazu Shimoshikiryoh

Shinichi Terashita

Kouichi Watanabe

Shigeyuki Yamada

A liquid crystal display device includes a first substrate, a liquid crystal layer, a second substrate, a retardation layer, and a polarizer in this order from a back face side, and includes a plurality of pixels arrayed in a matrix shape, in which the first substrate includes a reflective layer that reflects light, a first electrode and a second electrode that are capable of generating a transverse electrical field in the liquid crystal layer, and a first horizontal alignment film that is in contact with the liquid crystal layer, the second substrate includes a second horizontal alignment film in contact with the liquid crystal layer, the retardation layer includes a λ/4 plate and a λ/2 plate, the liquid crystal layer includes a positive-type liquid crystal material or a negative-type liquid crystal material, and has a twist alignment when no voltage is applied, and an angle formed by a polarization axis of the polarizer and an alignment direction of liquid crystal molecules defined by the first horizontal alignment film is within a predetermined range.

Liquid crystal display device

Provided are a liquid crystal panel capable of controlling a viewing angle with a reduced thickness and a liquid crystal display device including the liquid crystal panel. A liquid crystal panel including: a polymer dispersed liquid crystal layer; first light-shielding portions extending parallel to one another; second light-shielding portions extending parallel to one another in the same direction as the first light-shielding portions and located closer to a viewing surface side than the first light-shielding portions are.

Liquid crystal panel and liquid crystal display device

A liquid crystal display device includes a first substrate, a liquid crystal layer, a second substrate, a retardation layer, and a polarizer in this order from a back face side, and includes a plurality of pixels arrayed in a matrix shape, in which the first substrate includes a reflective layer that reflects light, a first electrode and a second electrode that are capable of generating a transverse electrical field in the liquid crystal layer, and a first horizontal alignment film that is in contact with the liquid crystal layer, the second substrate includes a second horizontal alignment film in contact with the liquid crystal layer, the liquid crystal layer has a twist alignment when no voltage is applied, and the retardation layer includes a λ/4 plate, a λ/2 plate, and a positive C plate.

A liquid crystal panel is a normally-black mode segment liquid crystal panel, and includes a plurality of pixels that are arrayed in substantial tessellation of an active region, as viewed from a direction of the normal of a first substrate, and a plurality of auxiliary electrodes that each have a portion that overlaps a gap between two pixels that are adjacent to each other, as viewed from the direction of the normal of the first substrate. A plurality of pixel electrodes, a common electrode, the plurality of auxiliary electrodes, and portions of a plurality of signal lines that are present in the active region are made of a transparent electroconductive material. The auxiliary electrodes are electrically connected to one of two pixel electrodes of the two pixels.

Liquid crystal panel, display device, and dimming device

A liquid crystal display device includes a display region, and includes a first liquid crystal panel including a color filter layer, an illumination device provided on a back face side of the first liquid crystal panel, and a second liquid crystal panel arranged between the first liquid crystal panel and the illumination device and not including a color filter layer. The second liquid crystal panel includes a first dimming region defined by a plurality of pixels arranged in a matrix including a plurality of rows and a plurality of columns and facing the display region, and a second dimming region that is defined by a plurality of additional pixels each including an unshaded opening region, and is located outside the first dimming region.

Growing community of inventors

Kameyama, Japan

Takehisa Yoshida