Display substrate, display device, control method and control circuit

Patent metadata

Field	Value
Publication number	US-11087690-B2
Application number	US-201916641082-A
Country	US
Kind code	B2
Filing date	Mar 19, 2019
Priority date	Mar 19, 2019
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

The present disclosure provides a display substrate, a display device, a control method and a control circuit. The display substrate includes a bending area. The bending area includes a plurality of first sub-pixels and a plurality of other sub-pixels having a light emission color different from a light emission color of the first sub-pixels. The plurality of first sub-pixels are electrically connected to a first power supply voltage terminal for providing a first power supply voltage. The other sub-pixels are electrically connected to other power supply voltage terminals different from the first power supply voltage terminal.

First claim

What is claimed is:

1. A control method for a display panel, comprising:
providing a first power supply voltage to a plurality of first sub-pixels in a bending area of a display substrate of the display panel;
providing a second power supply voltage to a plurality of second sub-pixels in the bending area;
providing a third power supply voltage to a plurality of third sub-pixels in the bending area, wherein each of the plurality of first sub-pixels is a green sub-pixel, each of the plurality of second sub-pixels is a red sub-pixel, and each of the plurality of third sub-pixels is a blue sub-pixel;
obtaining display image information of the bending area of the display panel and standard image information corresponding to the display image information, wherein the display image information comprises an abscissa and an ordinate of color coordinates and a display brightness, and the standard image information comprises a predetermined abscissa range and a predetermined ordinate range of the color coordinates and a predetermined brightness range;
adjusting at least one of the first power supply voltage, the second power supply voltage, or the third power supply voltage according to the display brightness and the predetermined brightness range so that the display brightness is within the predetermined brightness range;
adjusting the second power supply voltage according to the abscissa of the color coordinates of the display image information and the predetermined abscissa range, so that the abscissa of the color coordinates of the display image information is within the predetermined abscissa range;
adjusting at least one of the first power supply voltage or the third power supply voltage according to the ordinate of the color coordinates of the display image information and the predetermined ordinate range, so that the ordinate of the color coordinates of the display image information is within the predetermined ordinate range; and
determining whether an adjusted display brightness is within the predetermined brightness range, whether an adjusted abscissa of the color coordinates is within the predetermined abscissa range, and whether an adjusted ordinate of the color coordinates is within the predetermined ordinate range,
wherein at least one of the first power supply voltage, the second power supply voltage, or the third power supply voltage is continuously adjusted so that the display brightness of the display image information is adjusted to be within the predetermined brightness range in a case where the adjusted display brightness is not within the predetermined brightness range,
wherein the second power supply voltage is continuously adjusted so that the abscissa of the color coordinates of the display image information is adjusted to be within the predetermined abscissa range in a case where the adjusted abscissa of the color coordinates is not within the predetermined abscissa range; and
at least one of the first power supply voltage or the third power supply voltage is continuously adjusted so that the ordinate of the color coordinates of the display image information is adjusted to be within the predetermined ordinate range in a case where the adjusted ordinate of the color coordinates is not within the predetermined ordinate range.

2. The control method according to claim 1 , wherein the abscissa of the color coordinates of the display image information is greater than an upper limit value of the predetermined abscissa range, and
the adjusting of the second power supply voltage according to the abscissa of the color coordinates of the display image information and the predetermined abscissa range comprises: reducing the second power supply voltage.

3. The control method according to claim 1 , wherein the display brightness is greater than an upper limit value of the predetermined brightness range, and
the adjusting of at least one of the first power supply voltage, the second power supply voltage or the third power supply voltage according to the display brightness and the predetermined brightness range comprises: reducing the first power supply voltage.

4. The control method according to claim 1 , wherein the abscissa of the color coordinates of the display image information is less than a lower limit value of the predetermined abscissa range, and
the adjusting of the second power supply voltage according to the abscissa of the color coordinates of the display image information and the predetermined abscissa range comprises: increasing the second power supply voltage.

5. The control method according to claim 1 , wherein the ordinate of the color coordinates of the display image information is greater than an upper limit value of the predetermined ordinate range, and
the adjusting of at least one of the first power supply voltage or the third power supply voltage according to the ordinate of the color coordinates of the display image information and the predetermined ordinate range comprises: reducing at least one of the first power supply voltage or the third power supply voltage.

6. The control method according to claim 1 , wherein the ordinate of the color coordinates of the display image information is less than a lower limit value of the predetermined ordinate range, and
the adjusting of at least one of the first power supply voltage or the third power supply voltage according to the ordinate of the color coordinates of the display image information and the predetermined ordinate range comprises: increasing at least one of the first power supply voltage or the third power supply voltage.

7. The control method according to claim 1 , wherein the display brightness is less than a lower limit value of the predetermined brightness range, and
the adjusting of at least one of the first power supply voltage, the second power supply voltage, or the third power supply voltage according to the display brightness and the predetermined brightness range comprises: increasing at least one of the second power supply voltage or the third power supply voltage.

Assignees

• Chengdu Boe Optoelect Tech Co
• Boe Technology Group Co Ltd

Inventors

• Lu Xu
• Liang Hengzhen
• Zhu Xiaolong
• Liu Lianbin
• Li Fan
• Wang Shihao
• Meng Huan
• Xu Wen

Classifications

• G09G3/2003 Primary

  Display of colours (specific for liquid crystal displays G09G3/3607) · CPC title

• G09G3/03

  specially adapted for displays having non-planar surfaces, e.g. curved displays · CPC title

• G09G2330/021

  Power management, e.g. power saving · CPC title

• G09G3/3258 Primary

  with pixel circuitry controlling the voltage across the light-emitting element · CPC title

• G09G3/3225

  using an active matrix · CPC title