CN-121978855-A - Display device and array substrate

Abstract

The application provides a display device and an array substrate, and belongs to the technical field of display. The display device comprises a liquid crystal layer, a substrate and a plurality of sub-pixels arranged on the substrate in an array manner, wherein each sub-pixel comprises a pixel electrode, the pixel electrode is provided with a plurality of display domains, at least two of the display domains are respectively used for driving liquid crystal molecules in the liquid crystal layer to deflect towards different directions, two adjacent sub-pixels with the same color are a pixel group, and two sub-pixels in the pixel group are respectively applied with different driving voltages when displaying the same image gray level. Therefore, under the condition that the division of the hardware display domains is determined, the division of the display domains is combined with the division of the pixel groups, and the display effect of more display domains is simulated through software improvement by adjusting the driving voltage applied to the pixel groups, so that the display effect under a wide viewing angle is improved.

Inventors

• Chen Saiping

Assignees

• 深圳市华星光电半导体显示技术有限公司

Dates

Publication Date

20260505

Application Date

20260313

Claims (13)

1. 1. A display device, comprising a liquid crystal layer, a substrate, and a plurality of sub-pixels arranged on the substrate in an array, wherein each sub-pixel comprises a pixel electrode, the pixel electrode has a plurality of display domains, and at least two of the display domains are respectively used for driving liquid crystal molecules in the liquid crystal layer to deflect towards different directions; The two adjacent sub-pixels with the same color are a pixel group, and different driving voltages are respectively applied to the two sub-pixels in the pixel group when the same image gray level is displayed.
2. 2. The display device according to claim 1, wherein the pixel electrode includes a first main electrode extending in a row direction, a second main electrode extending in a column direction, and a plurality of branch electrodes; the branch electrodes are connected with the first main electrode and the second main electrode, extend from the first main electrode and the second main electrode towards different directions, the extending directions of the branch electrodes in each display domain are the same, and the extending directions of the branch electrodes in at least two display domains are different so as to drive liquid crystal molecules in the liquid crystal layer to deflect towards different directions.
3. 3. The display device according to claim 2, wherein line widths of the branch electrodes in the sub-pixels of different colors are different.
4. 4. A display device as claimed in claim 2 or 3, characterized in that the line spacing between the branch electrodes in the sub-pixels of different colours is different, the line spacing being the spacing between adjacent branch electrodes in the same display domain.
5. 5. The display device according to claim 1, further comprising a plurality of scanning lines extending in a row direction and a plurality of data lines extending in a column direction; Two adjacent scanning lines are a scanning line group, one part of the subpixels positioned in the same row are connected with one scanning line in the scanning line group, and the other part of the subpixels are connected with the other scanning line in the scanning line group; The subpixels with the same color are positioned in the same column, and two subpixels in the pixel group are connected with the same data line, so that the polarities of the two subpixels in the pixel group are the same.
6. 6. The display device according to claim 5, wherein the subpixels in two adjacent pixel groups are connected to different data lines, respectively, for two adjacent pixel groups of the same color, so that polarities of the subpixels in the two adjacent pixel groups of the same color are different.
7. 7. The display device according to claim 5, wherein one of two of the sub-pixels in the pixel group is a first gray-scale attribute pixel and the other is a second gray-scale attribute pixel; When the first gray scale attribute pixel and the second gray scale attribute pixel display the same image gray scale, the first gray scale attribute pixel is applied with a first driving voltage obtained according to the image gray scale, and the second gray scale attribute pixel is applied with a second driving voltage obtained according to the image gray scale.
8. 8. The display device according to claim 7, further comprising a timing controller and a source driver connected to the timing controller and the data line; The timing controller is configured to: Determining a first gray level value from a preset first mapping table and a second gray level value from a preset second mapping table according to the image gray level, wherein the first mapping table stores preset original gray levels for the first gray level attribute pixels and first optimized gray levels corresponding to the preset original gray levels, and the second mapping table stores second optimized gray levels corresponding to the preset original gray levels for the second gray level attribute pixels; The first gray scale value and the second gray scale value are sent to the source driver, so that the source driver obtains the first driving voltage according to the first gray scale value, obtains the second driving voltage according to the second gray scale value, and transmits the first driving voltage to the first gray scale attribute pixel and the second driving voltage to the second gray scale attribute pixel through the data line.
9. 9. The display device according to claim 5, wherein the sub-pixel further comprises a driving transistor provided over the substrate, an output terminal of the driving transistor being connected to the pixel electrode; The driving transistors of the red sub-pixels and the blue sub-pixels which are positioned in the same row are respectively arranged at two sides of the corresponding pixel electrode; The driving transistors of the green sub-pixels located in the same row are disposed on the same side of the pixel electrode.
10. 10. The display device according to claim 9, wherein the driving transistor of the sub-pixel of green located in the same row is located below a pixel electrode of the sub-pixel of green in a column direction so that the scanning line and the data line are accessed from below the sub-pixel of green in the column direction.
11. 11. An array substrate, based on the display device of any one of claims 1 to 10, characterized in that the array substrate comprises a substrate and a plurality of sub-pixels arranged on the substrate in an array, each sub-pixel comprising a pixel electrode, the pixel electrode having a plurality of display domains, at least two of the display domains in the plurality of display domains being respectively used for driving liquid crystal molecules in the liquid crystal layer to deflect in different directions.
12. 12. The array substrate of claim 11, wherein the pixel electrode comprises a first backbone electrode extending in a row direction, a second backbone electrode extending in a column direction, and a plurality of branch electrodes, the first and second backbone electrodes dividing the pixel electrode into a plurality of the display domains; Wherein line widths of the branch electrodes in the sub-pixels of different colors are different; and/or the line spacing between the branch electrodes in the sub-pixels of different colors is different, and the line spacing is the same as the space between the adjacent branch electrodes in the display domain.
13. 13. The array substrate of claim 11, wherein the sub-pixel further comprises a driving transistor disposed on the substrate, an output terminal of the driving transistor being connected to the pixel electrode; the driving transistors of the red sub-pixel and the blue sub-pixel are respectively arranged at two sides of the corresponding pixel electrode; The driving transistors of the green sub-pixels are disposed on the same side of the pixel electrode.

Description

Display device and array substrate Technical Field The present application relates to the field of display technologies, and in particular, to a display device and an array substrate. Background In the technical field of liquid crystal display, in order to improve the display effect of a display device under a wide viewing angle, a pixel electrode of a sub-pixel can be divided into a plurality of display domains, and basic wide viewing angle effect is realized by driving liquid crystal molecules to deflect towards different directions. At present, as the liquid crystal deflection regulation mode of a display domain is single, the tilting angle of liquid crystal molecules lacks diversified designs, and the problems of uneven brightness, color cast and the like easily occur in side view, but the division of the display domain is already determined in the manufacturing stage of the display device, and the viewing angle optimization is difficult to further improve after the manufacturing of the display device is finished, so that the requirement of optimizing the display effect of a wide viewing angle is difficult to meet. Disclosure of Invention The embodiment of the application provides a display device to at least partially solve the technical problems. In order to achieve the above object, according to a first aspect of the present application, there is provided a display device including a liquid crystal layer, a substrate, and a plurality of sub-pixels arrayed on the substrate, each of the sub-pixels including a pixel electrode having a plurality of display domains, at least two of the plurality of display domains being respectively for driving liquid crystal molecules in the liquid crystal layer to deflect in different directions; The two adjacent sub-pixels with the same color are a pixel group, and different driving voltages are respectively applied to the two sub-pixels in the pixel group when the same image gray level is displayed. Optionally, the pixel electrode comprises a first trunk electrode extending along a row direction, a second trunk electrode extending along a column direction and a plurality of branch electrodes, wherein the first trunk electrode and the second trunk electrode divide the pixel electrode into a plurality of display domains; the branch electrodes are connected with the first main electrode and the second main electrode, extend from the first main electrode and the second main electrode towards different directions, the extending directions of the branch electrodes in each display domain are the same, and the extending directions of the branch electrodes in at least two display domains are different so as to drive liquid crystal molecules in the liquid crystal layer to deflect towards different directions. Optionally, the line widths of the branch electrodes in the subpixels of different colors are different. Optionally, the line spacing between the branch electrodes in the sub-pixels of different colors is different, and the line spacing is the spacing between adjacent branch electrodes in the same display domain. Optionally, the display device further comprises a plurality of scanning lines extending along the row direction and a plurality of data lines extending along the column direction; Two adjacent scanning lines are a scanning line group, one part of the subpixels positioned in the same row are connected with one scanning line in the scanning line group, and the other part of the subpixels are connected with the other scanning line in the scanning line group; The subpixels with the same color are positioned in the same column, and two subpixels in the pixel group are connected with the same data line, so that the polarities of the two subpixels in the pixel group are the same. Optionally, for two adjacent pixel groups with the same color, the sub-pixels in the two adjacent pixel groups are respectively connected with different data lines, so that polarities of the sub-pixels in the adjacent pixel groups with the same color are different. Optionally, one of the two sub-pixels in the pixel group is a first gray-scale attribute pixel, and the other is a second gray-scale attribute pixel; When the first gray scale attribute pixel and the second gray scale attribute pixel display the same image gray scale, the first gray scale attribute pixel is applied with a first driving voltage obtained according to the image gray scale, and the second gray scale attribute pixel is applied with a second driving voltage obtained according to the image gray scale. Optionally, the display device further comprises a time sequence controller and a source driver connected with the time sequence controller and the data line; The timing controller is configured to: Determining a first gray level value from a preset first mapping table and a second gray level value from a preset second mapping table according to the image gray level, wherein the first mapping table stores preset original gray