Sharp Kabushiki Kaisha Corporation

Masanori Takeuchi

Toshihide Tsubata

Kenji Enda

Tomoki Noda

Nobuyoshi Nagashima

Toshifumi Yagi

Naofumi Kondo

Yuhko Hisada

Morihide Ohsaki

Tomokazu Ohtsubo

Ryuji Kurihara

Fumikazu Shimoshikiryoh

Ikumi Itsumi

Mitsuaki Hirata

Masae Kitayama

Masahiro Matsuda

Kentaroh Irie

Akira Yamaguchi

Kazuyori Mitsumoto

Akihiro Shohraku

Yuhko Hashimoto

Ryoki Itoh

Yoshio Hirakata

Yasuyuki Ohta

Each picture element includes first and second sub-picture elements, each of which includes a liquid crystal capacitor and at least one storage capacitor. After a display voltage representing a certain grayscale level has been applied to the respective sub-picture element electrodes of the first and second sub-picture elements, a voltage difference &#x394;V&#x3b1; is produced between voltages to be applied to the respective liquid crystal capacitors of the first and second sub-picture elements by way of their associated storage capacitor(s). By setting the voltage difference &#x394;V&#x3b1; value of the blue and/or cyan picture element(s) to be smaller than that of the other color picture elements, shift toward the yellow range at an oblique viewing angle can be minimized.

Liquid crystal display with first and second sub-picture elements including two storage capacitors

A segmented-pixel liquid crystal display has a plurality of pixels of which each has three sub-pixels-, namely one middle and two side sub-pixels, arranged next to one another in the column or row direction. The sub-pixels-have different brightness levels when the pixel as a whole is in a given middle halftone state, and the middle sub-pixelhas the highest brightness level. This eliminates unnaturalness as is conventionally produced when an image with a straight border is displayed, and further improves the gamma characteristic.

Liquid crystal display

The display device substrate according to the present invention is arranged so that: a source line is provided on an area on which a pixel electrode is not provided, and a gap is provided between the source line and the pixel electrode, and a black matrix (light shielding film) which covers a surface of the source line overlaps with the pixel electrode. Thus, it is possible to prevent parasitic capacitance (Csd) between the pixel electrode and the source line from becoming uneven in a display area, so that it is possible to reduce display unevenness of a liquid crystal display device using the present display device substrate.

Display device substrate and liquid crystal display device having the same

An active matrix substrate has a structure that prevents a drain extraction line from breaking without a plurality of active elements such as thin film transistor elements, metal-insulator-metal elements, MOS transistor elements, diodes, and varistors being disposed, and is suited for use in a large-size liquid crystal television or a like liquid crystal display device equipped with a large-size liquid crystal display panel. The active matrix substrate includes an active element connected, via a drain extraction line, to a storage capacitor upper electrode, wherein the drain extraction line has at least two routes.

Active matrix substrate and display device

A liquid crystal display device according to the present invention includes: a plurality of pixels that are arranged in rows and columns so as to form a matrix pattern; and TFTs (TFT-A, TFT-B and TFT-C), source bus lines, gate bus lines and CS bus lines (CS-A and CS-B), which are associated with the respective pixels. Each pixel includes at least three subpixels (SP-A, SP-B and SP-C) with liquid crystal capacitors that are able to retain mutually different voltages. By supplying a signal (CS-A or CS-B) that makes two of the at least three subpixels display mutually different luminances at least at a certain grayscale tone from the source, gate and CS bus lines to each pixel, the at least three subpixels are able to display mutually different luminances.

Liquid crystal display device

A liquid crystal display uses a pixel division method by which the size of a defect can be reduced much more than conventionally possible, and a defect correcting method for the liquid crystal display. The liquid crystal display is provided with an active matrix array substrate including a plurality of gate lines and a plurality of source lines arranged on a transparent substrate to intersect with each other, and a plurality of pixel electrodes arranged in a matrix, each pixel electrode including an assembly of a plurality of sub-pixel electrodes, separate TFTs respectively connected to the sub-pixel electrodes in the vicinity of an intersection portion of the gate line and the source line, the TFTs being driven by the common gate line and the common source line, and at least one opening portion being formed in a lower-layer side line placed in a lower layer at the intersection portion.

Liquid crystal display including source lines defining an opening portion and a defect correcting method for the same

A scanning signal line () includes an opening () leading from the outside of a pixel region through below a data signal line () into the pixel region, and first and second scanning electrode portions () or two side portions of the opening confronting in a column direction through that opening. The end portion of the first scanning electrode portion () in the pixel region is a first end portion (EP), and the end portion of the second scanning electrode portion () in the pixel region is a second end portion (EP). A first transistor has a source electrode () and a drain electrode () individually overlapping the first electrode portion () but not the first end portion (EP) in the pixel region. A second transistor has a source electrode () and a drain electrode () individually overlapping the second electrode portion () but not the second end portion EP) in the pixel region. According to the aforementioned constitution, it is possible to realize a pixel split type active matrix substrate capable of easily correcting the short-circuits of the data signal line () and the scanning signal line ().

Active matrix substrate, liquid crystal panel, liquid crystal display unit, liquid crystal display device, television receiver, active matrix substrate manufacturing method, and liquid crystal panel manufacturing method

An active matrix substrate of the present invention is arranged so that each pixel area has a transistor and a capacity electrode which is able to function as an electrode of a capacity. The active matrix substrate includes a conductor which is provided in a layer below the capacity electrode and is able to function as the other electrode of the capacity. The gate electrode of each transistor and a gate insulating film covering the conductor have a thin section with reduced thickness, in an on-conductor area overlapping the conductor. At least a part of the thin section overlaps the capacity electrode. In this way, the active matrix substrate which can reduce inconsistency in capacitance values of capacities (e.g. a storage capacitor, a capacity for controlling an electric potential of a pixel electrode, and a capacity which can function as both of them) provided in the substrate.

Active matrix substrate having channel protection film covering transistor channel, and display apparatus and/or, television receiver including same

A substrate for a display panel includes an alignment accuracy measurement mark which is used for measuring alignment accuracy between patterns on the substrate without decreasing an aperture ratio of a pixel. The substrate for a display panel includes the alignment accuracy measurement mark in an isolated configuration which is used for measuring alignment accuracy between a pattern of a gate signal line and an auxiliary capacitance line and a pattern of a source signal line and a drain line, where the alignment accuracy measurement mark has a shape such that at least one straight line portion is included, is formed in a layer where the pattern of the source signal line and the drain line is formed, and is positioned on the gate signal line.

Substrate for a display panel, and a display panel having the same

In an active matrix substrate of the present invention, a gate insulating film for covering a gate electrode of each transistor has a thin portion, having a reduced film thickness, which is provided on a part overlapped on the gate electrode, and the thin portion is formed by using the gate electrode, on which the thin portion is overlapped, as a mask, and each transistor has a first drain electrode section and a second drain electrode section which are respectively provided on both sides of a source electrode, and the thin portion has two edges opposite to each other, and the first drain electrode section is overlapped on the one edge, and the second drain electrode section is overlapped on the other edge. This makes it possible to provide an active matrix substrate which realizes high display quality while suppressing unevenness of parasitic capacitances (particularly, Cgd) of TFTs in the active matrix substrate whose each TFT has a thin portion in its gate insulating film.

Active matrix substrate, display device, television receiver, manufacturing method of active matrix substrate, forming method of gate insulating film

An active matrix substrate () includes a substrate, a TFT () formed on the substrate, a storage capacitor element () formed on the substrate, an interlayer insulating film covering the storage capacitor element (), and a pixel electrode () formed on the interlayer insulating film. The storage capacitor element () includes a storage capacitor line (), an insulating film formed on the storage capacitor line (), and two or more storage capacitor electrodes () opposed to the storage capacitor line () with the insulating film interposed therebetween. The two or more storage capacitor electrodes () are electrically connected via associated contact holes () formed in the interlayer insulating film to the pixel electrode () and electrically continuous with a drain electrode of the TFT ().

Active matrix substrate, method for fabricating active matrix substrate, display device, liquid crystal display device, and television device

A liquid crystal panel () includes an active matrix substrate on which a transistor (), a pixel electrode (), signal lines () and backup wirings () for recovering a defect in the signal line are formed; a color filter substrate on which a common electrode (counter electrode) is formed; and a liquid crystal material provided between the active matrix substrate and the color filter substrate. The backup wirings () are (electrically) connected to the common electrode on the color filter substrate, through (i) a protection circuit () for discharging an undesired electric charge that occurs in the backup wirings () and (ii) a sealing adhesive (). With this configuration, it becomes possible to reduce problems (for instance, unexpected short-circuiting of the backup wiring and the signal line) caused by the undesired electric charge that occurs in the backup wirings.

Liquid crystal panel, liquid crystal display apparatus and television receiver

A liquid crystal display uses a pixel division method by which the size of a defect can be reduced much more than conventionally possible, and a defect correcting method for the liquid crystal display. The liquid crystal display is provided with an active matrix array substrate including a plurality of gate lines and a plurality of source lines arranged on a transparent substrate so as to intersect with each other, and a plurality of pixel electrodes arranged in a matrix, each pixel electrode including an assembly of a plurality of sub-pixel electrodes, separate TFTs respectively connected to the sub-pixel electrodes in the vicinity of an intersection portion of the gate line and the source line, the TFTs being driven by the common gate line and the common source line, and at least one opening portion being formed in a lower-layer side line placed in a lower layer at the intersection portion.

Liquid crystal display and a defect correcting method for the same

An active matrix substrate including, in each pixel area, a transistor, a pixel electrode (), a conductive member () functioning as one of electrodes of a storage capacitor, a drain lead-out () electrode connected to a drain electrode of the transistor, and overlapping with the conductive member (), and a contact hole for connecting the drain lead-out electrode () to the pixel electrode (), includes a gate insulating film () covering a gate electrode of each transistor, the gate insulating film including a first thickness portion () overlapping with at least part of the contact hole, and a second thickness portion () formed adjacent to the first thickness portion, and overlapping with the drain lead-out electrode, the first thickness portion () having a greater thickness than the second thickness portion (). This makes it possible to provide the active matrix substrate in which a short-circuit between the conductive member functioning as one of the electrodes of the storage capacitor, and the drain lead-out electrode (or the pixel electrode) is successfully prevented.

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Tsu, Japan

Masanori Takeuchi