Sharp Kabushiki Kaisha Corporation

Akane Sugisaka

Fumikazu Shimoshikiryoh

Mitsuaki Hirata

Masae Kitayama

Yuki Yamashita

Ikumi Itsumi

Kenichi Hyohdoh

Masahiro Yoshida

Toshihide Tsubata

Masakatsu Tominaga

Toshinori Sugihara

Yasuhiro Mimura

Akihiro Shohraku

Kenichi Hyodo

Provided is an active matrix substrate that includes a thin film transistor that has a first semiconductor layer and an ESD protection circuit. The ESD protection circuit includes a diode element. The diode element has a first electrode in a gate metal layer, a second semiconductor layer that overlaps a first electrode, and a second electrode and a third electrode electrically connected to a second semiconductor layer in a source metal layer. First and second electrodes of the diode element are electrically connected. The ESD protection circuit further includes a reserve diode structure. The reserve diode structure includes a fourth electrode in the gate metal layer and is in an electrically floating state, and a third semiconductor layer that is formed in the same layer as the first and second semiconductor layers and overlaps the fourth electrode with an insulation layer in between.

Active matrix substrate, display device, and method for repairing defect of active matrix substrate

A color display pixel Pin a liquid crystal display device () includes first through fourth pixels Pthrough Parrayed in two rows by two columns, and first and second signal lines () which are located in correspondence with each column of pixels and are supplied with signal voltages of polarities opposite to each other from a signal line driving circuit () in each vertical scanning period. A TFT () of one of the first and third pixel Pand Pis connected to the first signal line (), and a TFT () of the other pixel is connected to the second signal line (). A TFT () of one of the second and fourth pixel Pand Pis connected to the first signal line (), and a TFT () of the other pixel is connected to the second signal line (). The TFTs () of the first through fourth pixels Pthrough Pare controlled to be ON/OFF by a common scanning signal, and the polarities of the signal voltages supplied to the first and second signal lines () are constant during an arbitrary vertical scanning period. Owing to this, the load on the signal line driving circuit is reduced.

Liquid crystal display device

The present invention provides a liquid crystal display panel capable of preventing the occurrence of display unevenness in the perimeter of the display area in the FFS mode. The liquid crystal display panel of the present invention includes a pair of substrates; a sealing material; and a liquid crystal layer enclosed by the pair of substrates and the sealing material. One of the pair of substrates includes a pixel electrode provided with multiple slits, and a flat plate-shaped common electrode located on a different layer from the pixel electrode, with an insulating film between the pixel electrode and the common electrode; a non-display area includes a gate driver, multiple gate lead-out wires extending from the gate driver toward a display area, and a common lead-out wire electrically connected to the common electrode; the common lead-out wire intersects the multiple gate lead-out wires; and the common electrode covers an area between the common lead-out wire intersecting the multiple gate lead-out wires and a part of the perimeter of the display area along the common lead-out wire.

Liquid crystal display panel

The present invention is to provide a liquid crystal display device which hardly causes image sticking even when there is a difference in the pixel areas. The liquid crystal display device of the present invention includes a pair of substrates, and a liquid crystal layer sandwiched between the pair of substrates, and is configured such that a pixel is formed by picture elements of a plurality of colors. The liquid crystal display device of the present invention is featured in that one of the pair of substrates includes scanning lines, signal lines, and storage capacitor lines, a thin film transistor connected to each of the scanning line and the signal line, and a pixel electrode connected to the thin film transistor, in that the other of the pair of substrates includes an opposed electrode, in that the pixel electrode is arranged for each of the picture elements, and in that the pixel electrode having a larger area among the plurality of pixel electrodes arranged in one pixel is connected to the thin film transistor having a larger channel width among the plurality of the thin film transistors arranged in the one pixel.

A liquid crystal display device () according to the present invention has a plurality of pixels that are arranged in columns and rows to form a matrix pattern and one color display pixel (P) is comprised of four or any other larger even number of pixels. The liquid crystal display device () of the present invention includes a plurality of source bus lines () which run in a column direction. The even number of pixels that form one color display pixel (P) include larger pixels with a relatively large area and smaller pixels with a relatively small area. Each set of pixels to be supplied with a signal voltage from an associated one of the plurality of source bus lines () has substantially the same total area as any other set of pixels. According to the present invention, in a liquid crystal display device in which a plurality of pixels that forms one color display pixel includes the larger and smaller pixels, generation of display unevenness that runs in the column direction can be minimized.

A liquid crystal display device (display device)according to the present invention is provided with a display area AA that displays an image, and a non-display area NAA surrounding the display area AA. The non-display area NAA includes at least a backup wireas a first wire and a source wireas a second wire arranged on an upper side with respect to the backup wireand intersecting with the backup wire. The backup wireincludes an intersecting portionCP intersecting with the source wire. The intersecting portionCP includes a crank portioncranked at a side edge of the intersecting portionCP a second wire extending direction in which the source wireextends.

Display device and television device

A liquid crystal display device () according to the present invention includes a color display pixel D including pixels PA through PD arrayed in a matrix. The pixels PA through PD respectively include sub pixels SAthrough SDand sub pixels SAthrough SD. At least at an intermediate gray scale level, the luminance of the sub pixels SAthrough SDis higher than the luminance of the sub pixels SAthrough SD. The plurality of sub pixels S included in the pixels PA through PD are arrayed in a matrix. The sub pixel SAis adjacent to the sub pixel SBin the row direction, is adjacent to the sub pixel SCin the column direction, and is adjacent to the sub pixel SDin an oblique direction.

The present invention provides a liquid crystal display device which hardly causes image sticking in a panel in which Cgd gradation is performed, even when the pixel capacitances of the picture elements are different from one another. The liquid crystal display device of the present invention is a liquid crystal display device which includes a pair of substrates and a liquid crystal layer sandwiched between the pair of substrates, and is configured such that a pixel is formed by picture elements of a plurality of colors, wherein one of the pair of substrates includes scanning lines, signal lines, storage capacitor lines, thin film transistors connected to both of the scanning lines and the signal lines, and pixel electrodes connected to the thin film transistors; the other of the pair of substrates includes a counter electrode; the pixel electrodes are arranged for the picture elements; a scanning line and a pixel electrode form a gate-drain capacitance; the gate-drain capacitance formed by a pixel electrode with a larger pixel capacitance among the pixel electrodes arranged in one pixel is larger than the gate-drain capacitance formed by a pixel electrode with a smaller pixel capacitance among the pixel electrodes arranged in the one pixel; an overlapping area of each of the pixel electrodes overlapped with the scanning line initially increases in a travelling direction of a scanning line signal but a rate of the increase subsequently decreases, in each of the pixel electrodes respectively arranged for the picture elements of single colors; and rates of increase are different among the pixel electrodes with different pixel capacitances.

A liquid crystal deviceof the present invention includes conductive filmsfor storage capacitors, i.e., a first conductive filmand a second conductive film, which are connected to two adjacent pixel electrodes, respectively, via contact sectionsformed through a second insulating film. The part of a storage capacitorlocated below the conductive filmsis divided into a first capacitor linearranged below the first conductive filmand a second capacitor linearranged below the second conductive film

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Osaka, Japan

Akane Sugisaka