Hitachi, Ltd.

Hitachi Device Engineering Co., Ltd.

Other

Masumi Sasuga

Junichi Ohwada

Hiroshi Nakamoto

Akira Kobayashi

Tsutomu Isono

Masaru Fujita

Ryu Ono

Shiro Ueda

Katsuhiko Shibata

Naoto Kobayashi

Yoichi Igarashi

Shunichi Kumaoka

Masahiko Suzuki

Norihisa Fukayama

Kimitoshi Ohgiichi

Kuniyuki Matsunaga

Masataka Natori

Hikaru Ito

Atsushi Nemoto

A liquid crystal display device includes first and second substrates with a liquid crystal layer therebetween, and a transparent conductor which is formed at a liquid crystal side of at least one of the first and the second substrates. At least a projected portion is formed on the transparent conductor in a pixel region, and a material of the projected portion is different from a material of the transparent conductor.

Structure of liquid crystal display device for easy assembly and disassembly

A liquid crystal display device which includes a liquid crystal display panel, a metal shield casing covering a periphery of the liquid crystal display panel, a plurality of fluorescent lamps arranged below the liquid crystal panel, a back light support supporting the plurality of fluorescent lamps, and a lower casing fixed to the metal shield casing. The back light support is fixed in the lower casing and comprises a plurality of slits, wherein one end of the plurality of fluorescent lamps is disposed with respect to a respective one of the plurality of slits.

A liquid crystal display device includes a liquid crystal display panel and a metal shield casing which covers a periphery of the liquid crystal display panel. The metal shield casing has a plurality of fixing pawls and a plurality of fixing hooks.

A liquid crystal display device including a liquid crystal display panel, a first driver circuit substrate, a second driver unit substrate and a flexible connector. The first driver circuit substrate provides electrical connection for at least one driver chip for the liquid crystal display panel with the first driver circuit being disposed at a peripheral portion of the liquid crystal display panel. The second driver circuit substrate has at least a connector to be connected with an external circuit with the second driver circuit substrate being disposed in superposed relation to at least a portion of the first driver circuit substrate. The flexible connector electrically connects at least a part of the first driver circuit substrate to at least a part of the second driver substrate.

The present invention provides a liquid crystal display device which is capable of suppressing wavy brightness irregularity which occurs in a display screen edge portion in the vicinity of drivers or tape carrier packages (TCPs) on which the drivers are mounted, owing to the mounting of the drivers or the TCPs. In one example of the present invention, a wavy pattern for preventing brightness irregularity is partially formed along one edge of a light guide plate in the vicinity of drivers mounted on a substrate which constitutes a liquid crystal display panel. Similar effects and advantages are obtained even if this wavy pattern for preventing brightness irregularity is formed on a reflecting sheet arranged on the side of the liquid guide plate opposite to the liquid crystal display panel, or on a diffusion sheet inserted between the light guide plate and the liquid crystal display panel.

LCD having a pattern for preventing a wavy brightness irregularity at the edges of the screen due to drive elements or tape carrier packages

Structure of liquid crystal display device for easy assembly and easy disassembly

A liquid crystal display device which comprises: a shield casing made of a metal plate and having fixing pawls and fixing hooks; an middle frame for holding a liquid crystal display; and a lower casing for packaging back lights, wherein the fixing pawls of said shield casing are bent in corresponding recesses formed in the middle frame, and wherein the fixing hooks of said shield casing are fitted on corresponding projections formed on the lower casing.

Structure of liquid crystal display device with two driver circuit

To make it possible to prevent disconnection of the wiring on a driving multilayer flexible circuit board when folding the board, to reliably fold the circuit board, to improve the assemblability and the reliability or a backlight member, and to improve the noise resistance in a clip-chip-type liquid crystal display device using the circuit board, one end of a flexible substrate FPC2 is connected to an end of one transparent glass substrate SUB1 constituting a liquid crystal display element, the intermediate portion of the flexible substrate FPC2 is folded nearby the outside of an end side of the substrate SUB1, the other end of the substrate FPC2 is arranged at the lower side of an end of the substrate SUB1, and an end of a film BFI of the flexible substrate FPC2 is formed into a waved pattern along the folding line.

Liquid crystal display device assembled by flip chip technology

A liquid crystal device in which a peripheral circuit board positioned in the outer periphery of a seal port is recessed to avoid the projection of the seal port and in which a fluorescent tube has its two lamp cables arranged around the four sides of a crystal display element, so that the substrate at the seal port side and the lamp cable of a side light type back light can be packaged in compact.

Liquid crystal display device with reduced frame portion surrounding

A liquid crystal display device is provided which reduces the resistance of input wires disposed between a flexible board and driving ICs mounted in a flip-chip style, and enhances resistance against electrocorrosion of input terminals thereof. The liquid crystal display device includes two transparent insulating substrates (SUB1, SUB2) confronting each other through a liquid crystal layer, plural liquid crystal driving circuits (ICs) mounted in a flip-chip style on a surface of one of the substrates located at the side of the liquid crystal layer, a flexible board (FPC) for inputting a signal to each of the liquid crystal driving circuits, and plural input wires (Td) provided on the surface of the one substrate at the side of the liquid crystal layer to connect output terminals of the flexible board to input terminals of the liquid crystal driving circuits. Each input wire includes a first metal layer (g1) in the vicinity of the surface of the substrate, a transparent conductive layer (d1) laminated on the first metal layer, connected to the input terminals of the flexible board, with open portions in the neighborhood of the input terminals of the liquid crystal driving circuits and in the neighborhood of the output terminals of the flexible board, a second metal layer (d2) laminated on the transparent conductive film and connected to the first metal layer at the open portions, and a protection film (PSV1) covering at least the second metal layer.

LCD device having driving circuits with multilayer external terminals

A liquid crystal display device. The liquid crystal display device has a peripheral circuit including a liquid crystal display having drive ICs COG-packaged on a transparent substrate, and a foldable multi-layered flexible substrate having two or more conductor layers, so that the compact packaging can be realized to reduce EMI noise and the number of parts. The liquid crystal display device may also include a display controller having two or more display control integrated circuit elements packaged therein, and drive ICs mounted by a chip-on-glass packaging on two sides of a liquid crystal display panel, usually, on the longer sides, so that the display controller excellent in the temperature resistance and advantageous in compact and a video signal line driving circuit board are uniformly arranged at the upper and lower sides of a screen. As a result, the vertical positioning of the screen can be made proper to take an advantage in the compact packaging. Further, the liquid crystal display device may have a peripheral circuit board positioned in an outer periphery of a seal port recessed to avoid the projection of the seal port and in which a fluorescent tube has its two lamp cables arranged around four sides of a liquid crystal display element, so that the substrate at the seal port side and the lamp cable of a side light type back light can be compactly packaged.

Structure of liquid crystal display device for easy assembly and

A liquid crystal display device which includes a shield casing made of a metal plate and having fixing pawls and fixing hooks, an middle frame for holding a liquid crystal display, and a lower casing for packaging back lights. The fixing pawls of said shield casing are bent in corresponding recesses formed in the middle frame. Also, the fixing hooks of said shield casing are fitted on corresponding projections formed on the lower casing.

Growing community of inventors

Mobara, Japan

Masumi Sasuga