Driving method for display panel

Patent metadata

Field	Value
Publication number	US-2019088185-A1
Application number	US-201715749243-A
Country	US
Kind code	A1
Filing date	Nov 17, 2017
Priority date	Sep 15, 2017
Publication date	Mar 21, 2019
Grant date	—

Abstract

The present invention provides a driving method for a display panel. In an n-th scanning period, the pixel unit on the i-th row and an x-th column receives data signals. At least two subpixels with different colors on the i-th row and the x-th column of pixel unit receive the data signals according to a first sequence. In an (n+1)th scanning period, the pixel unit on the j-th row and an x-th column receives data signals. At least two subpixels with different colors on the j-th row and the x-th column of pixel unit receive the data signals according to a second sequence. A color of the subpixel which last receives the data signal in the first sequence is the same as a color of the subpixel which first receives the data signal in the second sequence.

First claim

What is claimed is:

1 . A driving method for a display panel, wherein the display panel comprises a plurality of rows and columns of pixel units arranged in a matrix, each of the pixel units comprises at least two subpixels with different colors, in each scanning period, scanning signals scan one of the rows of the pixel units, the driving method for the display panel comprises:
in an n-th scanning period, receiving data signals by the pixel unit on the i-th row and an x-th column, wherein at least two subpixels with different colors on the i-th row and the x-th column of pixel unit receive the data signals according to a first sequence, wherein n, i, x is a natural number; in an (n+1)th scanning period, receiving data signals by the pixel unit on the j-th row and an x-th column, wherein at least two subpixels with different colors on the j-th row and the x-th column of pixel unit receive the data signals according to a second sequence, wherein j and i are different natural numbers; wherein a color of the subpixel which last receives the data signal in the first sequence is the same as a color of the subpixel which first receives the data signal in the second sequence, wherein the data signal of the subpixel which last receives the data signal in the first sequence is the same as the data signal of the subpixel which first receives the data signal in the second sequence.

2 . The driving method for the display panel according to claim 1 , wherein each column of the pixel units comprises at least two columns of subpixels, each column of the pixel units corresponds to a data line and a multiplexing switch, and the data line is configured to provide the data signals, and the multiplexing switch comprises at least two control switches, each of the control switches is electrically connected with the data line and one column of subpixels, and each of the control switches is electrically connected to the different columns of subpixels; and the driving method for the display panel further comprises:
in the n-th scanning period, receiving at least two control signals by the multiplexing switch, wherein the at least two control signals control the at least two control switches to let the data lines and the at least two subpixels with different colors of the pixel unit on the i-th row and the x-th column be electrically connected, according to the first sequence; in the (n+1)th scanning period, receiving at least two control signals by the multiplexing switch, wherein the at least two control signals control the at least two control switches to let the data lines and the at least two subpixels with different colors of the pixel unit of the j-th row and the x-th column be electrically connected, according to the second sequence.

3 . The driving method for the display panel according to claim 2 , wherein each of the control signals controls one of the at least two control switches to turn on, and the data line is electrically connected with the subpixel which is electrically connected with the control switch after each of the control switches is turned on.

4 . The driving method for the display panel according to claim 3 , wherein each of the pixel units comprises four subpixels with different colors, each column of the pixel units comprises four columns of subpixels, the multiplexing switch comprises four control switches, and an m-th control switch is electrically connected with the data line and the m-th column of subpixels; wherein m is a natural number between 1 and 4.

5 . The driving method for the display panel according to claim 4 , wherein in each scanning period, the multiplexing switch receives four control signals, each of the control signals comprises four components, the control switch is a thin film transistor, a source electrode of a m-th thin film transistor is electrically connected with the data line, a drain electrode of the m-th thin film transistor is electrically connected with a m-th column of subpixels, and a gate electrode of the m-th TFT receives a m-th component of each control signal in each scanning period.

6 . The driving method for the display panel according to claim 1 , wherein each of the pixel units comprises four subpixels with different colors, each two columns of pixel units comprise eight columns of subpixels, two adjacent columns of the pixel units correspond to two data lines and a multiplexing switch, the two data lines are used to provide data signals, and the multiplexing switch comprises eight control switches; when m is 1 or 4, a m-th control switch is electrically connected with a first data line and a m-th column of subpixels; when m is 2 or 3, the m-th control switch is electrically connected with the first data line and a (m+4)th column of subpixels; when m is 5 or 8, the m-th control switch is electrically connected with a second data line and the m-th column of subpixels; when m is 6 or 7, the m-th control switch is electrically connected to the second data line and the (m−4)th column of subpixels; and the driving method for the display panel further comprises:
in the n-th scanning period, receiving four control signals by the multiplexing switch receives, controlling a first control switch, a fourth control switch, a sixth control switch, and a seventh control switch by the four control signals to let the four subpixels with different colors of the pixel unit on the i-th row and x-th column be electrically connected with a corresponding data line according to the first sequence;
in the (n+1)th scanning period, receiving four control signals by the multiplexing switch, controlling the first control switch, the fourth control switch, the sixth control switch, and the seventh control switch by the four control signals to let the four subpixels with different colors of the pixel unit on the j-th row and x-th column be electrically connected with a corresponding data line according to the second sequence.

7 . The driving method for the display panel according to claim 1 , wherein the scanning signals scan the plurality of pixel units in a progressive manner, wherein i and j have a relationship of j=i+1.

8 . The driving method for the display panel according to claim 2 , wherein the scanning signals scan the plurality of pixel units in a progressive manner, wherein i and j have a relationship of j=i+1.

9 . The driving method for the display panel according to claim 3 , wherein the scanning signals scan the plurality of pixel units in a progressive manner, wherein i and j have a relationship of j=i+1.

10 . The driving method for the display panel according to claim 4 , wherein the scanning signals scan the plurality of pixel units in a progressive manner, wherein i and j have a relationship of j=i+1.

11 . The driving method for the display panel according to claim 5 , wherein the scanning signals scan the plurality of pixel units in a progressive manner, wherein i and j have a relationship of j=i+1.

12 . The driving method for the display panel according to claim 6 , wherein the scanning signals scan the plurality of pixel units in a progressive manner, wherein i and j have a relationship of j=i+1.

13 . The driving method for the display panel according to claim 6 , wherein the scanning signals scan the plurality of pixel units in a progressive manner, wherein i and j have a relationship of j=i+2.

14 . The driving method for the display panel according to claim 13 , wherein the driving method for the display panel further comprises:
in a (n+2)th scanning period, receiving four control signals by the multiplexing switch, controlling the first control switch, the fourth control switch, the s

Assignees

• Wuhan China Star Optoelectronics Technology Co Ltd

Inventors

• Zhang Tingting
• Huang Chun-Hung
• Wang Cong

Classifications

• G09G3/2003 Primary

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

• G09G2310/0202

  Addressing of scan or signal lines · CPC title

• G09G2300/0452

  Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components · CPC title

• G09G2310/0264

  Details of driving circuits · CPC title

• H01L27/1214

  Electricity · mapped topic