Driving method of a display panel

Patent metadata

Field	Value
Publication number	US-2020184895-A1
Application number	US-201816463370-A
Country	US
Kind code	A1
Filing date	Dec 19, 2018
Priority date	Nov 28, 2018
Publication date	Jun 11, 2020
Grant date	—

Abstract

A driving method of a display panel is provided, including setting the first red, first green, first blue, second red, second green, and second blue multiplexed signals. In the 2i−1th multiplexing period, the charging time of the sub-pixels corresponding to the switching units controlled by the first red, the first green, and the first blue multiplexed signals is earlier than that controlled by the second red, the second green, and the second blue multiplexed signals. While In the 2ith multiplexing period, the charging time of the sub-pixels corresponding to the switching units controlled by the first red, the first green, and the first blue multiplexed signals is later than that controlled by the second red, the second green, and the second blue multiplexed signals. The method will eliminate the stripe feeling of the scream picture displayed on the display panel and so improve the display quality.

First claim

What is claimed is:

1 . A driving method of a display panel, comprising the following steps:
step S 1 : providing a display panel; wherein said display panel includes a plurality of driving units; each of the driving units includes a plurality of pixels arranged in a plurality of rows and four columns, 12 data lines, and a multiplex module; each pixel includes three sub-pixels arranged in a row, and the three sub-pixels are in order a red sub-pixel, a green sub-pixel, and a blue sub-pixel; the sub-pixels of the plurality of pixels are arranged in a plurality of rows and 12 columns; the colors of the same column of the sub-pixels are the same; one data line connects with one column of the sub-pixels correspondingly; the multiplex module includes 12 switching elements corresponding to the 12 columns of the sub-pixels, respectively; output ends of the twelve switching elements are respectively connected to the data lines each connected to a corresponding one column of the sub-pixels; input ends of the switching elements corresponding to the odd columns of the sub-pixels are all connected together to receive signal from the nth data line, where n is a positive integer; input ends of the switching elements corresponding to the even columns of the sub-pixels are all connected together to receive signal from the n+1th data line; control ends of the switching elements corresponding to the red sub-pixels in the first and second columns of the pixels are connected together to receive a first red multiplexed signal; control ends of the switching elements corresponding to the green sub-pixels in the first and second columns of the pixels are connected together to receive a first green multiplexed signal; control ends of the switching elements corresponding to the blue sub-pixels in the first and second columns of the pixels are connected together to receive a first blue multiplexed signal; control ends of the switching elements corresponding to the red sub-pixels in the third and fourth columns of the pixels are connected together to receive a second red multiplexed signal; control ends of the switching elements corresponding to the green sub-pixels in the third and fourth columns of the pixels are connected together to receive a second green multiplexed signal; and control ends of the switching elements corresponding to the blue sub-pixels in the third and fourth columns of the pixels are connected together to receive a second blue multiplexed signal; step S 2 : entering a 2i−1th multiplexing period; wherein said 2i−1th multiplexing period includes p first row periods; and in each first row period, the first red multiplexed signal, the first green multiplexed signal, the first blue multiplexed signal, the second red multiplexed signal, the second green multiplexed signal, and the second blue multiplexed signal successively generate a high-level pulse, where i and p are positive integers; and step S 3 : entering a 2ith multiplexing period; wherein said 2ith multiplex period includes p second row periods; and in each second row period, the second red multiplexed signal, the second green multiplexed signal, the second blue multiplexed signal, the first red multiplexed signal, the first green multiplexed signal, and the first blue multiplexed signal successively generate a high-level pulse.

2 . A driving method of a display panel as claimed in claim 1 , wherein each of the driving units further includes a plurality of scan lines; and one row of the sub-pixels are correspondingly connected to one scan line.

3 . A driving method of a display panel as claimed in claim 2 , wherein said 2i−1th multiplexing period includes 1 first row period; and said 2ith multiplexing period includes 1 second row period.

4 . A driving method of a display panel as claimed in claim 3 , wherein in the 2i−1th multiplexing period, a voltage on the qth scan line is at high potential, and voltages on the scan lines other than the qth scan line among the plurality of scan lines are all at low potential, where q is a positive integer; and
in the 2ith multiplexing period, a voltage on the q+1th scan line is at high potential, and voltages on the scan lines other than the q+1th scan line among the plurality of scan lines are all at low potential.

5 . A driving method of a display panel as claimed in claim 2 , wherein said 2i−1th multiplexing period includes two successively performed first row periods; and said 2ith multiplexing period includes two successively performed second row periods.

6 . A driving method of a display panel as claimed in claim 5 , wherein in the first of the two first row periods of said 2i−1th multiplexing period, a voltage on the qth scan line is at high potential, and voltages on the scan lines other than the qth scan line among the plurality of scan lines are all at low potential, where q is a positive integer; in the second of the two first row periods of said 2i−1th multiplexing period, a voltage on the q+1th scan line is at high potential, and voltages on the scan lines other than the q+1th scan line among the plurality of scan lines are all at low potential;
in the first of the two second row periods of said 2ith multiplexing period, a voltage on the q+2th scan line is at high potential, and voltages on the scan lines other than the q+2th scan line among the plurality of scan lines are all at low potential; and in the second of the two second row periods of said 2ith multiplexing period, a voltage on the q+3th scan line is at high potential, and voltages on the scan lines other than the q+3th scan line among the plurality of scan lines are all at low potential.

7 . A driving method of a display panel as claimed in claim 1 , wherein durations of the high-level pulse of each of the first red multiplexed signal, the first green multiplexed signal, the first blue multiplexed signal, the second red multiplexed signal, the second green multiplexed signal, and the second blue multiplexed signal are equal.

8 . A driving method of a display panel as claimed in claim 1 , wherein said display panel is a liquid crystal display panel or an OLED display panel.

9 . A driving method of a display panel as claimed in claim 1 , wherein the first red multiplexed signal, the first green multiplexed signal, the first blue multiplexed signal, the second red multiplexed signal, the second green multiplexed signal, the second blue multiplexed signal, the nth data signal, and the n+1th data signal are provided by an external driving chip.

10 . A driving method of a display panel as claimed in claim 1 , wherein said switching elements each are a thin film transistor, the control ends of the switching elements are gates of the thin film transistors, the input ends of the switching elements are sources of the thin film transistors, and the output ends of the switching sources are drains of the thin film transistors.

Assignees

• Wuhan China Star Optoelectronics Technology Co Ltd

Inventors

• Zhao Mang
• Zheng Lihua
• Tian Yong

Classifications

• G09G2300/0804

  Sub-multiplexed active matrix panel, i.e. wherein one active driving circuit is used at pixel level for multiple image producing elements · CPC title

• G09G3/2074

  using sub-pixels · CPC title

• H10K59/35

  comprising red-green-blue [RGB] subpixels · CPC title

• H10K59/353

  characterised by the geometrical arrangement of the RGB subpixels · CPC title

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title