Other

Hitachi, Ltd.

Hitachi Electronic Devices Co., Ltd.

Hitachi Displays, Ltd.

Hitachi Displays Devices, Ltd.

Hisao Hirayama

Toshitsugu Miyawaki

Yasuo Hira

Yuji Mori

Hitoshi Taniguchi

Akio Tezuka

Yasuhisa Shiraishi

Masataka Natori

Makoto Hasegawa

Naohiro Mashino

Tomoaki Kawada

A display device suitable for a game machine has dot printed films which are printed on a light guide plate which constitutes a backlight for illuminating a liquid crystal display panel. The dots of the dot printed films are arranged more densely in a window-frame portion corresponding region, which faces a display region of the liquid crystal display panel, and in the vicinity of an inner periphery of a transmission portion corresponding to a region which faces a transmission region.

Liquid crystal display backlight's light reflection treatment portion that directs light from the light source toward the LCD excluding a transmission region of the LC

In a liquid crystal display device having the so-called side-edge type backlight system which comprises: a liquid crystal display panel; a light guide plate being disposed opposite to a main surface of the liquid crystal panel; and a linear lamp being disposed along one of sides of the light guide plate, the present invention provides a plurality of grooves at a corner area of an edge of the light guide plate along which the linear lamp is disposed so that the plurality of grooves are extended in a direction slanted to the edge of the light guide plate. In accordance with this structural feature, the present invention enables a high quality image display performance of the liquid crystal display panel by suppressing the display irregularity appearing therein effectively.

Liquid crystal display device

A liquid crystal display having a liquid crystal display panel having a plurality of liquid crystal cells, and a back light that irradiates the liquid crystal display panel with irradiation light. The back light includes a light source, and a light guide plate having one side arranged adjacent the light source and having a planar surface with a plurality of small concaves. The planar surface is almost parallel to a liquid crystal cell face, and a plane shape of the small concaves is almost rectangular.

Liquid crystal display

A liquid crystal display includes a liquid crystal display panel having a plurality of liquid crystal cells and aback light that irradiates the liquid crystal display panel with irradiation light. The back light includes a light source and a light guide plate having one side arranged adjacent the light source and having a planar surface with a plurality of small concaves. The planar surface is substantially parallel to a liquid crystal cell face and a plane shape of the small concaves is substantially rectangular.

In order to provide a liquid crystal display (LCD) device capable of improving the display quality by preventing light leakage in the end portion of a display window on the side adjacent a fluorescent tube, a liquid crystal display device has a LCD panel, a light guide placed under the LCD panel, a fluorescent tube placed close to and along at least one side of the light guide, a lamp reflector sheet for covering substantially the whole length of the fluorescent tube, a diffusion sheet placed on the light guide under the LCD panel, and a reflective sheet placed under the light guide, wherein the surface of the lamp reflector sheet, reflective sheet or the diffusion sheet on the one side of the light guide is printed in color.

Liquid crystal display device having a side edge type back light system

Growing community of inventors

Mobara, Japan

Hisao Hirayama