Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Advanced Display, Inc.

Yuichi Masutani

Shingo Nagano

Kazuhiro Kobayashi

Ken Nakashima

Yasunori Niwano

Shigeaki Noumi

Takuji Yoshida

Yuuzou Oodoi

Hiroyuki Murai

Nobuaki Ishiga

Kazunori Inoue

Yasuyoshi Itoh

Nobuhiro Nakamura

Masaru Aoki

Katsuaki Murakami

Kenichi Miyamoto

Takao Sakamoto

Hironori Aoki

Takeshi Shimamura

Hiroshi Ueda

Osamu Miyakawa

Hitoshi Morishita

Shinji Yamashita

Toshio Araki

Hisaharu Oura

Yoshinori Numano

Kenichi Watanabe

Eiji Shibata

Kenichiro Ishibashi

A plurality of source signal lines extend parallel to each other. Gate signal lines extend parallel to each other while crossing the plurality of source signal lines. A pixel switching element is provided at an intersection of each of the source signal lines and each of the gate signal lines. Driving terminals receive signals to be input to the plurality of source signal lines. Leading lines connect the plurality of driving terminals and the plurality of source signal lines in one to one relationship. A repairing line has a conductive part extending parallel to the plurality of leading lines. An end part of one leading line or each of more leading lines near the source signal line and the driving terminal corresponding to this one or each of these leading lines can become connected through this conductive part.

Display device

An array substrate has regions in which an intermediate resist film thickness is formed and processed by an intermediate exposure amount which does not completely expose a resist, respectively on a drain electrode, source terminal, and a common connection wiring which are made of a second conductive film. Thin film patterns or a common wiring made of a first conductive film is formed in substantially entire regions on the bottom layers of the regions so that the heights from a substrate are substantially the same.

Array substrate, display device, and method for manufacturing the array substrate

An array substrate has a plurality of gate signal lines, a plurality of source signal lines orthogonal to the plurality of gate signal lines, a plurality of gate-driver mounting terminals, a plurality of source-driver mounting terminals, a plurality of gate-side array inspection terminals connected to the gate signal lines, a plurality of source-side array inspection terminals connected to the source signal lines, a plurality of gate lead wire disconnection inspection circuits connected between the plurality of gate-driver mounting terminals and a common terminal for a gate lead wire disconnection inspection, and a plurality of source lead wire disconnection inspection circuits connected between the plurality of source-driver mounting terminals and a common terminal for a source lead wire disconnection inspection.

Array substrate, method of disconnection inspecting gate lead wire and source lead wire in the array substrate, method of inspecting the array substrate, and liquid crystal display device

A liquid crystal display apparatus according to the invention is an in-plane switching liquid crystal display apparatus having gate wirings and source wirings, which intersect one another, and also having pixel electrodes each connected to an associated one of the source wirings, and common electrodes disposed opposite to the pixel electrodes. A scanning signal is inputted to the gate wiring so that one horizontal period has a writing period, in which a pixel potential is written to the pixel electrode, and a nonwriting period, in which no pixel potential is written to the pixel electrode. The pixel potential is outputted to the source wiring in the writing period, while a common potential is inputted to the source wiring in the nonwriting period.

Liquid crystal display apparatus and method for generating a driver signal based on resistance ratios

A thin-film transistor array substrate includes a source line that is formed above a gate insulating layer covering a gate line, a semiconductor layer that is formed on the gate insulating layer and placed in a substantially whole area below a drain electrode, in a substantially whole area below a source electrode, in a substantially whole area below the source line and in a position opposite to the gate electrode, a pixel electrode that is formed directly on the drain electrode, a transparent conductive pattern that is formed directly on the source electrode and the source line in the same layer as the pixel electrode, and a counter electrode that is formed on an interlayer insulating layer covering the pixel electrode and the transparent conductive pattern and generates a fringe electric field with the pixel electrode.

Thin-film transistor array substrate, method of manufacturing the same, and liquid crystal display device

The liquid crystal display device, in which liquid crystal is filled between a TFT array substrate having a TFT and a counter substrate placed opposite to the TFT array substrate, includes a pixel electrode placed at least partly directly over or under a drain electrode of the thin film transistor so as to directly overlap the drain electrode, an interlayer insulating layer placed to cover the pixel electrode, and a counter electrode placed on the interlayer insulating layer and having a slit to generate a fringe electric field with the pixel electrode, wherein the counter electrode is placed to overlap a gate line connected to a gate electrode of the TFT in at least part of area and connected to the counter electrode in an adjacent pixel across the gate line.

Liquid crystal display device and method of manufacturing the same

Source lines cross, over an intervening first insulation film, gate lines on an insulation substrate. Switching elements are on crossings between the gate lines and the source lines. Pixel electrodes are connected to the switching elements. Common electrodes facing the pixel electrodes generate between the pixel electrodes and the common electrodes an electric field directed approximately parallel to the insulation substrate. First shielding electrode patterns along the source lines in a layer, with the first insulation film intervening, underneath the source lines, at least partially overlap the source lines widthwise. Plural second shielding electrode patterns are formed along the source lines, overlapping the first shielding electrode patterns and without substantially overlapping the source lines in a layer, with a second insulation film intervening, above the source lines. The first shielding electrode patterns having a same electric potential as the plural second shielding electrode patterns.

Liquid crystal display comprising first and second shielding electrode patterns and manufacturing method thereof

In a method of manufacturing a TFT substrate in accordance with an exemplary aspect of the present invention, an intrinsic semiconductor film, an impurity semiconductor film, and a conductive film for source lines are formed in succession, and a resist having a thin-film portion and a thick-film portions is formed on the conductive film for source lines. Then, etching is performed by using the resist as a mask, and after that, a part of the conductive film for source lines is exposed by removing the thin-film portion of the resist. Next, the exposed conductive film for source lines is etched by using the thick-film portions of the resist a mask, so that the impurity semiconductor film is exposed. Then, by etching the exposed impurity semiconductor film, a back channel region of a TFTis formed. Further, a dummy back channel region, which is irrelevant to the operation of the finished product, is also formed in a portion other than the TFTregion.

Method of manufacturing TFT substrate and TFT substrate

An array substrate is provided with thereon a display area in which plural pixels are arranged in a matrix shape. Output-side mounting terminals for a source driving circuit chip, which is COG-mounted on a frame area on the outside of the display area, have a plural-row zigzag arrangement. Inspection terminals individually provided in correspondence to the output-side mounting terminals have a zigzag arrangement opposite to the zigzag arrangement of the output-side mounting terminals in a terminal-row direction. Additionally, the output-side mounting terminals and the inspection terminals are disposed below the source driving circuit chip.

In forming a thin film transistor using multi-tone exposure, a wiring width of a foundational wiring is 40 &#x3bc;m or less, and a ratio of a wiring width of a foundational wiring in a dense case to a space between adjacent wirings is 1.7, preferably 1.0 or less.

Thin film transistor substrate with divided gate electrode

A semi-transparent TFT array substrate has a TFT including a source electrode, a gate electrode, and a drain electrode. The substrate also has an auxiliary capacitive wiring and a reflective pixel electrode. Further, the substrate has a transparent pixel electrode including an electrode extending from a corner of the rest of the transparent pixel electrode to an edge of the auxiliary capacitive wiring closest to a gate wiring connected to the gate electrode. In addition, the substrate has a source wiring connected to the source electrode. The auxiliary capacitive wiring overlaps a space existing between the reflective pixel electrode and the source wiring. The electrode is disposed between the reflective pixel electrode and the source wiring. A connection which connects the electrode and the rest of the transparent pixel electrode does not overlap the auxiliary capacitive wiring in a plan view. The connection does not overlap the gate wiring.

Semi-transparent TFT array substrate, and semi-transparent liquid crystal display with transparent pixel electrode and contrast reduction preventive electrode connected in the same layer

The present invention intends to provide a manufacturing method of a semi-transmissive liquid crystal display device in which method a structure and manufacturing process thereof are simplified to enable to reduce the manufacturing cost. In order to achieve the above object, a semi-transmissive liquid crystal display device in the invention has a layer constitution in which a reflective pixel electrode is formed with a second conductive film that constitutes a source electrode, a drain electrode, a source wiring and so on and on an upper layer of the second metal film a transmissive pixel electrode made of a transparent conductive film is formed through the insulating film. A TFT array substrate can be formed through 5 times of photoengraving process.

Semitransmissive liquid crystal display device and manufacturing method thereof

A transflective liquid crystal display device in which a transmissive area to transmit light to a pixel area and a reflective area as well as a thin film transistor are arranged on an insulating substrate, includes an TFT array substrate having plural gate wirings each provided with a gate electrode and a storage capacitive wiring provided with a storage capacitive electrode made of a first conductive film, plural source wirings each provided with a source electrode and a drain electrode made of a second conductive film, a reflecting pixel electrode extending from the drain electrode, and a transmissive pixel electrode formed through a second insulating film, and an opposite substrate arranged oppositely to the TFT array substrate. The source wirings and the reflecting pixel electrode are arranged apart from each other by a predetermined interval, and a contrast preventing electrode is formed over the interval on the second insulating film.

Transflective liquid crystal display device and method for manufacturing the same

A thin film transistor array substrate includes a reflective electrode, a storage capacitor electrode disposed below the reflective electrode with a first insulation layer interposed therebetween, a second insulation layer disposed above the reflective electrode, the second insulation layer having a contact hole in an area where the storage capacitor electrode is not disposed, a transmissive electrode electrically connected to the reflective electrode through the contact hole, and a thickness compensation pattern disposed below the reflective electrode in an area having the contact hole. The thickness compensation pattern is isolated from the storage capacitor electrode.

Thin film transistor array substrate, manufacturing method for the same, and transflective liquid crystal display

A liquid crystal display of the present invention comprises a display portion having two opposed insulating substrates (an electrode substrate () and an opposed substrate) holding a liquid crystal layer to form a plurality of display elements, wires () formed on at least one of the insulating substrates, for supplying signals to the plurality of display elements, a driver LSI () provided in a peripheral portion of the insulating substrate, being connected to terminals of the wires () to drive a plurality of display elements, and a conductive film pattern portion formed on the wires () in the peripheral portion of the insulating substrate with a first insulating layer interposed therebetween. With this constitution, a liquid crystal display which allows inspection of output signals of the driver LSI in a failure analysis, without extending wires or exposing electrode portions connected to the wires and a method of inspecting the liquid crystal display are provided.

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Tokyo, Japan

Yuichi Masutani