Hitachi, Ltd.

Hitachi Displays, Ltd.

Hitachi Device Engineering Co., Ltd.

Panasonic Liquid Crystal Display Co., Ltd.

Other

Japan Display Inc.

Hiroko Hayata

Hitoshi Komeno

Kouichi Anno

Nobuyuki Ishige

Tohru Sasaki

Mitsuru Goto

Toshihiro Sato

Shinichi Komura

Osamu Itou

Keiichiro Ashizawa

Hideaki Abe

Takuo Kaitoh

Masayuki Hikiba

Makoto Tatemura

Yuichi Numata

Shigeo Shimomura

Jun Ishikawa

Hideyuki Honoki

Masanori Yuki

Satoshi Namiki

A display device includes a TFT substrate with gate signal lines, drain signal lines, thin-film transistors connected thereto, a gate driver connected to the gate signal lines, a drain driver having output terminals connected to drain signal lines, and a film substrate having first wirings. The first wirings are disposed between the drain driver and the film substrate. The drain driver is mounted on the film substrate, and the output terminals are connected to the first wirings between the film substrate and the drain driver. The output terminal includes first group terminals formed in parallel with a longer edge of the drain driver, and second group terminals formed in parallel with the longer edge and disposed between the loner edge and the first group terminals.

Liquid crystal display device

The present invention provides a liquid crystal display device which can obviate cutting off of a peripheral region of the liquid crystal display device which is provided with an inspection circuit and can surely perform the inspection of an image display even when the peripheral region is narrowed. On a substrate of the liquid crystal display device, a pixel region which is comprised of a plurality of gate lines and a plurality of drain lines and a peripheral region which surrounds the pixel region are formed. A turn-on inspection terminal of the liquid crystal display device are formed on the peripheral region and a semiconductor chip for driving liquid crystal is formed on the inspection terminal. The semiconductor chip is electrically insulated from the inspection terminal.

To provide a liquid crystal display device to suitably perform color balance adjustment. For this, the liquid crystal display device includes pixel regions each including a light reflection portion and a light transmission portion on a liquid-crystal-side surface of one substrate out of respective substrates arranged to face each other in an opposed manner while sandwiching liquid crystal therebetween, wherein color filters are formed in pixel regions on a liquid-crystal-side surface of the other substrate out of the respective substrates, and each color filter is provided with an opening or notch at a part of a portion facing the light reflection portion in an opposed manner, material layers having a layer thickness substantially equal to a height of step generated by the color filters in regions facing the opening or notch of each color filter in an opposed manner on the liquid-crystal-side surface of one substrate.

A first transparent substrate and a second transparent substrate having such a plurality of protrusions on the liquid crystal layer side as to contact with the first transparent substrate are so fixed by means of a sealant that they bend convexly to the liquid crystal layer. Thus, it is possible to suppress the mura defect of a panel, which might otherwise be caused by the heat radiation from a back light when a liquid crystal display apparatus is driven.

Liquid crystal display apparatus and method for manufacturing the same

The present invention is configured so that it has a first substrate, a second substrate, a liquid crystal layer pinched between the first substrate and second substrate, and a driving unit, wherein a characteristic of a reflectivity versus an applied voltage is a normally closed type and a characteristic of a transmissivity versus an applied voltage is the normally closed type: wherein the first substrate has a common electrode, and an upside polarization plate and upside phase plate on an upper surface; wherein the second substrate has a reflective electrode and transparent electrode connected with an active element, and a downside polarization plate and downside phase plate on a lower surface; wherein the liquid crystal layer has a twist angle not less than 40 degrees and not more than 65 degrees; wherein a retardation of the liquid crystal layer in a reflective display unit is within a range of not less than 230 nm and not more than 300 nm; and wherein a retardation of the liquid crystal layer in a transmissive display unit is larger than the retardation of the liquid crystal layer in the reflective display unit. Thus, is obtained a display that is more luminous and wider in a light reproduction range under a wide range of luminous environments ranging from a dark place to direct sunlight.

Liquid crystal display device and partial transmission type liquid crystal display device

A liquid crystal display device includes a liquid crystal display element and an image signal line drive unit for supplying a gradation/tone voltage and having a plurality of semiconductor integrated circuit devices. Each semiconductor integrated circuit device has an input circuit unit which is provided at a central portion along a longitudinal direction of the semiconductor integrated circuit device and provided in a short side direction of the semiconductor integrated circuit device. A first output terminal section is provided in the longitudinal direction of the semiconductor integrated circuit device on both sides of a central portion in the short side direction of the semiconductor integrated circuit device of the input circuit unit, and a pair of output circuit units are provided on the both sides of the first output terminal section in the short-side direction of the semiconductor integrated circuit device.

The present invention provides a liquid crystal display device which can largely suppress the reduction of contrast which occurs in a light reflection mode of a liquid crystal display device. On a liquid-crystal-side surface of one of substrates which are arranged to face each other in an opposed manner while sandwiching liquid crystal therebetween, the liquid crystal display device includes pixel regions each of which is classified into a light reflection portion and a light transmission portion. On each pixel region, a first light-transmitting pixel electrode which is formed on the light reflection portion and the light transmission portion, a material layer which is formed on a major portion of the light reflection portion, an insulation layer having an opening formed at a portion corresponding to the light transmission portion, and a second pixel electrode which is formed on the light reflection portion and functions as a reflection film are sequentially laminated.

Light leakage within pixel area is prevented. A liquid crystal display device includes a light reflection area forming pixel electrode and a reflection film in one portion of a pixel area on a liquid crystal side face of one substrate oppositely arranged through the liquid crystal. A light transmission area forms the pixel electrode in another portion. The pixel electrode as the reflection film is formed on the upper face except for an opening portion of an insulating film. The opening portion is formed in a light transmission area. The opening portion of the insulating film has a fan-shaped taper from the substrate side to the liquid crystal side on the side wall face of this opening portion. At least one portion of this taper is not covered with the pixel electrode used as the reflection film, but is exposed. The insulating film has a light absorption property in at least the taper portion.

Growing community of inventors

Mobara, Japan

Hiroko Hayata