Driving method, driving device, and display device

Patent metadata

Field	Value
Publication number	US-11250802-B2
Application number	US-201816328934-A
Country	US
Kind code	B2
Filing date	Jul 27, 2018
Priority date	Oct 19, 2017
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

The disclosure discloses a method and apparatus for driving a display panel, and a display device. A method for driving a display panel according to an embodiment of this disclosure includes: determining a charging length of time of the current row of pixels; determining a common voltage value corresponding to the charging length of time; and driving the current row of pixels using the common voltage value.

First claim

The invention claimed is:

1. A method for driving a display panel, the method comprising:
determining a charging length of time of a current row of pixels;
determining a common voltage value corresponding to the charging length of time; and
driving the current row of pixels using the common voltage value;
wherein determining the common voltage value corresponding to the charging length of time comprises:
determining a digital signal of common voltage corresponding to the charging length of time; and
converting the digital signal into an analog signal.

2. The method according to claim 1 , wherein determining the charging length of time of the current row of pixels comprises:
calculating the charging length of time of the current row of pixels according to at least one of following parameters:
a distance between the current row of pixels and a gate driver and/or a source driver on a main board; and
a difference in brightness between the current row of pixels and a preceding row of pixels.

3. The method according to claim 1 , wherein determining the digital signal of common voltage corresponding to the charging length of time comprises:
determining a charging length of time interval comprising the charging length of time of the current row of pixels; and
determining the digital signal of common voltage corresponding to the current row of pixels according to a correspondence relationship between charging length of time intervals, and digital signals of common electrode.

4. The method according to claim 3 , wherein the correspondence relationship is set by:
determining a difference Δt between a maximum charging length of time tmax and a minimum charging length of time tmin;
dividing Δt into n charging length of time intervals, wherein n is equal to or greater than 2; and
setting a corresponding digital signal of common voltage for each charging length of time interval.

5. The method according to claim 1 , further comprises: in response to that the charging length of time of a succeeding row of pixels is same with that of the current row of pixels, driving the succeeding row of pixels using the common voltage value for driving the current row of pixels.

6. An apparatus for driving a display panel, the apparatus comprising:
a memory configured to store program instructions; and
a processor configured to invoke the program instructions stored in the memory, and to execute the program instructions to perform the method according to claim 1 .

7. A non-transitory computer storage medium, storing computer executable instructions configured to make the computer to perform the method according to claim 1 .

8. A display device, comprising the apparatus according to claim 6 .

9. The apparatus according to claim 6 , wherein the processor is configured to invoke the program instructions stored in the memory, and to execute the program instructions to determine the charging length of time of the current row of pixels by:
calculating the charging length of time of the current row of pixels according to at least one of following parameters:
a distance between the current row of pixels and a gate driver and/or a source driver on a main board; and
a difference in brightness between the current row of pixels and a preceding row of pixels.

10. The apparatus according to claim 6 , wherein the processor is configured to invoke the program instructions stored in the memory, and to execute the program instructions to determine the digital signal of common voltage corresponding to the charging length of time by:
determining a charging length of time interval comprising the charging length of time of the current row of pixels; and
determining the digital signal of common voltage corresponding to the current row of pixels according to a correspondence relationship between charging length of time intervals, and digital signals of common electrode.

11. The apparatus according to claim 10 , wherein the processor is configured to invoke the program instructions stored in the memory, and to execute the program instructions to set the correspondence relationship by:
determining a difference Δt between a maximum charging length of time tmax and a minimum charging length of time tmin;
dividing Δt into n charging length of time intervals, wherein n is equal to or greater than 2; and
setting a corresponding digital signal of common voltage for each charging length of time interval.

12. The apparatus according to claim 6 , wherein the processor is configured to invoke the program instructions stored in the memory, and to execute the program instructions to:
in response to that the charging length of time of a succeeding row of pixels is same with that of the current row of pixels, drive the succeeding row of pixels using the common voltage value for driving the current row of pixels.

Assignees

• Hefei Boe Display Tech Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Zhou Liugang
• Chu Yifang
• Li Shou

Classifications

• G09G2320/0247

  Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes · CPC title

• G09G3/3674

  Details of drivers for scan electrodes · CPC title

• G09G3/3655

  Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors · CPC title

• G09G3/3685

  Details of drivers for data electrodes · CPC title

• G09G3/3696 Primary

  Generation of voltages supplied to electrode drivers · CPC title