US 2010/0073337 A1Published application

Active matrix substrate, liquid crystal panel, liquid crystal display unit, liquid crystal display and television receiver

AssigneeSharp Kabushiki Kaisha

InventorToshihide Tsubata

Life of this patent

Estimating the term…

Loading patent…

Abstract

A pair of pixel electrodes provided on each pixel in the same pixel array (e.g. PLj) are connected to one or the other of two adjacent data signal lines (e.g. 15X and 15Y). When two consecutive pixels are sequentially blocked, for two pixels belonging to the same block and being adjacent in a column direction (e.g. PX1 and PX2), the data signal line to which two pixel electrodes provided on one of the pixels are connected is different from the data signal line to which two pixel electrodes provided on the other of the pixels are connected. For two pixels belonging to different blocks and being adjacent in the column direction (e.g. PX2 and PX3), the data signal line to which two pixel electrodes provided on one of the pixels are connected is the same as the data signal line to which two pixel electrodes provided on the other of the pixels are connected. A signal potential (+) equal to or higher than a standard potential and a signal potential (−) equal to or lower than the standard potential are alternatively supplied to the data signal line for every two horizontal periods. During the period in which the signal potential (+) equal to or higher than the standard potential is supplied to one of the two adjacent data signal lines (e.g. 15X and 15Y), the signal potential (−) equal to or lower than the standard potential is supplied to the other of the data signal lines. With this, display quality can be enhanced in a pixel division method liquid crystal display in which 2H/1V inversion driving is performed.

Claims35

Dependent claims

An active matrix substrate comprising:

pixel regions;
scanning signal lines extending in a row direction so as to cross the pixel regions corresponding thereto;
data signal lines extending in a column direction;
switching elements which are provided in the vicinity of corresponding intersections of the data signal lines and the scanning signal lines and each of which is connected to the data signal line and the scanning signal line forming the intersection in the vicinity of which the switching element is provided;
storage capacitor wirings each of which is provided so as to correspond to a gap between pixel regions adjacent with each other in the column direction;
and
a pair of pixel electrodes in each pixel region, the pair of pixel electrodes forming storage capacitors with different ones of the storage capacitor wirings respectively, wherein:
the pair of pixel electrodes provided in each pixel region adjacent with each other in the column direction is both connected to one of adjacent data signal lines via the switching element provided in the vicinity of an intersection of the one of the data signal lines and the scanning signal line crossing the pixel region, or to the other of the adjacent data signal lines via the switching element provided in the vicinity of an intersection of the other of the data signal lines and the scanning signal line crossing the pixel region;
the intersections of the data signal lines and the scanning signal lines are grouped into A and B groups by alternately grouping intersections of a data signal line and the scanning signal lines into the A and B groups for every n adjacent intersections and grouping intersections adjacent in the row direction into different groups where n≧2;
assuming that the adjacent data signal lines are referred to as first and second data signal lines;
in a given pixel region, each of two pixel electrodes provided in a given pixel region is connected to the first data signal line via the switching element;
and a pixel region adjacent to the given pixel region in the column direction is referred to as an adjacent pixel region,
each of two pixel electrodes included in the adjacent pixel region is connected to a second data signal line of the adjacent pixel region via the switching element if (i) an intersection of the scanning signal line crossing the adjacent pixel region and the first data signal line and (ii) an intersection of the scanning signal line crossing the given pixel region and the first data signal line belong to the same one of the groups;
and
each of the two pixel electrodes included in the adjacent pixel region is connected to a first data signal line of the adjacent pixel region via the switching element if (i) the intersection of the scanning signal line crossing the adjacent pixel region and the first data signal line and (ii) the intersection of the scanning signal line crossing the given pixel region and the first data signal line belong to different ones of the groups.

12 more elements

An active matrix substrate comprising pixel regions disposed in row and column directions where the row direction is an extending direction of a scanning signal line, each pixel region has a pair of pixel electrodes connected to the same one of the scanning signal lines and to the same one of the data signal lines via a switching element wherein the pixel electrodes form capacitors with storage capacitor wirings in such a manner that pixel electrodes in one pixel region form the capacitors with different ones of the storage capacitor wirings, respectively, and one of two pixel electrodes provided on one pixel region and one of the two pixel electrodes provided on a pixel region adjacent to the pixel region in the column direction, form the capacitors with the same one of the storage capacitor wirings, wherein

each of two pixel electrodes provided on each pixel region in the same pixel region array is connected to one or the other of two adjacent data signal lines and n consecutive pixel regions are sequentially grouped into blocks in the same pixel region array where n≧2,
for pixel regions belonging to the same block, the pair of pixel electrodes in one pixel region and the pair of pixel electrodes in a pixel region adjacent to the pixel region in the column direction are connected to different ones of the data signal lines, and for pixel regions belonging to different blocks, the pair of pixel electrode in one pixel region and the pair of pixel electrode in a pixel region adjacent to the pixel region are connected to the same one of the data signal lines.

Dependencies are inferred from the claim text.

Facts

Application: 12/526,700Filed 6 Feb 2008
Priority: JP 2007-1239638 May 2007
Published: 25 Mar 2010
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

G02F 1/13624
Active matrix addressed cells: having more than one switching element per pixel
G02F 1/133707
Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers: structures for producing distorted electric fields, e.g.…
G09G 3/3655
Using an active matrix: details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors
G02F 1/133776
Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers: having structures locally influencing the alignment, e.g.…