Driving method and drive circuit of display panel, display panel, and display device

Patent metadata

Field	Value
Publication number	US-12260835-B2
Application number	US-202018036205-A
Country	US
Kind code	B2
Filing date	Dec 22, 2020
Priority date	Dec 22, 2020
Publication date	Mar 25, 2025
Grant date	Mar 25, 2025

Abstract

A driving method and drive circuit of a display panel, a display panel, and a display device. The method includes: receiving initial image data of a frame to be displayed, the resolution of an initial image corresponding to the initial image data being different from the resolution of a display panel; the initial image data including a plurality of pieces of initial gray scale data for displaying the initial image; according to the initial gray scale data in the initial image data, the resolution of the initial image, and the resolution of the display panel, determining target gray scale data corresponding to panel sub-pixels in the display panel; and driving the display panel to display according to the target gray scale data.

First claim

What is claimed is:

1. A driving method of a display panel, comprising:
receiving initial image data of a frame, wherein a resolution of an initial image corresponding to the initial image data is different from a resolution of the display panel, and the initial image data comprises a plurality of pieces of initial gray scale data for displaying the initial image;
determining target gray scale data corresponding to panel sub-pixels in the display panel according to the initial gray scale data in the initial image data, the resolution of the initial image and the resolution of the display panel; and
driving the display panel to display according to the target gray scale data;
wherein the resolution of the initial image is smaller than the resolution of the display panel;
wherein the panel sub-pixels in the display panel are arranged into panel sub-pixel groups in a first direction, and the plurality of panel sub-pixel groups are sequentially arranged in a second direction; the panel sub-pixels in a same panel sub-pixel group are the same in color;
image sub-pixels in the initial image are arranged into image sub-pixel groups in the first direction, and the plurality of image sub-pixel groups are sequentially arranged in the second direction; the image sub-pixels in a same image sub-pixel group are the same in color; an image sub-pixel corresponds to a piece of initial gray scale data; and
the determining the target gray scale data corresponding to the panel sub-pixels in the display panel according to the initial gray scale data in the initial image data, the resolution of the initial image and the resolution of the display panel, comprises:
determining, according to the resolution of the initial image and the resolution of the display panel, that a total quantity of the image sub-pixel groups in the initial image is the same as a total quantity of the panel sub-pixel groups in the display panel, wherein a total quantity of the panel sub-pixels in a panel sub-pixel group is M times a total quantity of the image sub-pixels in an image sub-pixel group, M≥2, and M is an integer;
dividing M adjacent panel sub-pixels in each panel sub-pixel group into an adjustment area, such that an adjustment area corresponds to an image sub-pixel; and
determining the target gray scale data corresponding to each panel sub-pixel in each adjustment area according to the initial gray scale data of the image sub-pixel corresponding to each adjustment area.

2. The driving method according to claim 1 , wherein the determining the target gray scale data corresponding to each panel sub-pixel in each adjustment area according to the initial gray scale data of the image sub-pixel corresponding to each adjustment area, comprises:
determining each piece of initial gray scale data as the target gray scale data corresponding to a panel sub-pixel in the corresponding adjustment area; and
determining, as for other panel sub-pixels except for the panel sub-pixel corresponding to the initial gray scale data in each adjustment area, the target gray scale data corresponding to the other panel sub-pixels in each adjustment area according to the initial gray scale data corresponding to each adjustment area, wherein the target gray scale data corresponding to each panel sub-pixel in the other panel sub-pixels is different.

3. The driving method according to claim 2 , wherein the panel sub-pixels corresponding to the initial gray scale data are spaced with each other with an equal quantity of panel sub-pixels; and the panel sub-pixels corresponding to the initial gray scale data are close to an edge of the adjustment area where the panel sub-pixels are.

4. The driving method according to claim 3 , wherein the determining the target gray scale data corresponding to the other panel sub-pixels in each adjustment area according to the initial gray scale data corresponding to each adjustment area, comprises:
defining every two adjacent adjustment areas in the first direction as a first adjustment area and a second adjustment area;
determining a data difference value corresponding to the first adjustment area according to the quantity of the other panel sub-pixels in the first adjustment area, initial gray scale data corresponding to the first adjustment area and initial gray scale data corresponding to the second adjustment area; and
determining the target gray scale data corresponding to the other panel sub-pixels in the first adjustment area according to the initial gray scale data corresponding to the first adjustment area and the data difference value.

5. The driving method according to claim 4 , wherein the data difference value corresponding to the first adjustment area is determined by a following formula:

Δ
⁢
da

=

da
01

-

da
02

M
+
1

;

wherein, Δda represents the data difference value, da 01 represents the initial gray scale data corresponding to the first adjustment area, da 02 represents the initial gray scale data corresponding to the second adjustment area, and M represents the quantity of the other panel sub-pixels in the first adjustment area; and
the target gray scale data corresponding to the other panel sub-pixels in the first adjustment area is determined by a following formula:
da m =da 01 −m*Δda;

wherein, m represents an m th panel sub-pixel of the other panel sub-pixels in the first adjustment area, and da m represents target gray scale data corresponding to the m th panel sub-pixel.

6. The driving method according to claim 2 , wherein each panel sub-pixel comprises a storage electrode; the display panel further comprises: a plurality of switch control circuits, a plurality of scanning lines, a plurality of data lines and a plurality of switch control lines; a panel sub-pixel group corresponds to at least one scanning line among the plurality of scanning lines, and the panel sub-pixels arranged in the second direction correspond to at least one data line among the plurality of data lines;
in each panel sub-pixel group, every two adjacent panel sub-pixels are coupled through a switch control circuit; the switch control circuit is further coupled with the corresponding scanning line and at least one switch control line among the plurality of switch control lines;
in response to the target gray scale data corresponding to each panel sub-pixel in the other panel sub-pixels being different, the driving the display panel to display according to the target gray scale data, comprises:
loading a gate cutting-off signal on each scanning line and loading a gate turning-on signal on each switch control line, to control each switch control circuit to disconnect the storage electrodes in two coupled panel sub-pixels;
loading gate turning-on signals on the scanning lines one by one, loading a gate cutting-off signal on each switch control line, and loading the target gray scale data on each data line, such that the corresponding target gray scale data is input into the storage electrode of each panel sub-pixel; and
in response to the target gray scale data corresponding to each panel sub-pixel in the adjustment area being the same, the driving the display

Assignees

• Boe Technology Group Co Ltd

Inventors

• Zong Shaolei
• Duan Xin
• Sun Jigang
• Sun Wei
• Liu Rui

Classifications

• G09G2340/0407

  Resolution change, inclusive of the use of different resolutions for different screen areas · CPC title

• G09G2320/0666

  for control of colour parameters, e.g. colour temperature · CPC title

• G06F3/14 Primary

  Digital output to display device {; Cooperation and interconnection of the display device with other functional units} · CPC title

• G09G5/10

  Intensity circuits · CPC title

• G09G3/3607 Primary

  for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels (display of colours in flat matrix panels other than liquid crystal displays G09G3/2003; grey scales specific for television H04N3/127) · CPC title