CN-116486730-B - Display module, driving method thereof and display device

CN116486730BCN 116486730 BCN116486730 BCN 116486730BCN-116486730-B

Abstract

The application provides a display module, a driving method thereof and a display device. The display module comprises a grid driving circuit and a display panel, wherein a display area of the display panel comprises a plurality of pixel rows, each pixel row comprises a plurality of repeating units, and each repeating unit comprises a first pixel unit and a second pixel unit. When the display picture in the display area is monitored to be black-to-white, the grid driving circuit drives and scans each pixel row line by line in a first driving mode, when the display picture in the display area is monitored to be black-to-white, the grid driving circuit is switched to a second driving mode to drive and scan the pixel row corresponding to the black-to-white of the display picture line by line, the square wave width duration of a scanning signal in the second driving mode is smaller than that of a scanning signal in the first driving mode, the effective charging time of the first pixel unit is equal to that of the second pixel unit, visual brightness is consistent, and the problem that pixels are smeared when the display picture of the display module is changed from black to white is solved.

Inventors

WANG HAIHONG
GU HONGGANG
LIU ZHU
CAO KUN
CUI XIAOCHEN
YUAN LING

Assignees

京东方科技集团股份有限公司
南京京东方显示技术有限公司

Dates

Publication Date: 20260512
Application Date: 20230426

Claims (7)

1. The display module is characterized by comprising a grid driving circuit, a display panel and a time sequence controller, wherein a display area of the display panel comprises a plurality of pixel rows, each pixel row comprises a plurality of repeated units, each repeated unit comprises a first pixel unit and a second pixel unit, the first pixel unit is electrically connected with the grid driving circuit through an even number grid line, and the second pixel unit is electrically connected with the grid driving circuit through an odd number grid line; The time sequence controller is used for monitoring data signals of all pixel rows of the display area row by row, determining whether a display picture changes from black to white according to the data signals, and determining the pixel row corresponding to the black to white of the display picture; When the black to white transition of the display picture of the display area is not monitored, the grid driving circuit adopts a first driving mode to drive and scan each pixel row by row; when the display picture of the display area is monitored to be changed from black to white, the grid driving circuit is switched to a second driving mode, and pixel rows corresponding to the black to white of the scanning display picture are driven row by row; The square wave width duration of the scanning signal in the second driving mode is smaller than that of the scanning signal in the first driving mode, and the square wave width duration of the scanning signal in the second driving mode is smaller than or equal to the half-row pixel scanning driving time.
2. The display module assembly of claim 1, wherein the display module assembly comprises, The square wave width time of the scanning signal of the first driving mode is longer than the half-line pixel scanning driving time.
3. The display module assembly of claim 1, wherein the display module assembly comprises, And driving and scanning the second pixel units connected with the odd-numbered gate lines in each pixel row by adopting a first driving mode and a second driving mode, and driving and scanning the first pixel units connected with the even-numbered gate lines.
4. The display module assembly of claim 1, wherein the display module assembly comprises, The next row scan signal is delayed by half a row of pixel scan driving time compared to the current row scan signal.
5. The display module assembly of claim 1, wherein the display module assembly comprises, The first pixel unit comprises two pixels, and the second pixel unit comprises two pixels, wherein each pixel comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel; the first pixel units are connected with even grid lines, and the second pixel units are connected with odd grid lines; corresponding sub-pixels of the same color of the first pixel unit and the second pixel unit in one repeating unit are connected with the same data line.
6. A display device comprising a display module according to any one of claims 1 to 5.
7. A driving method of a display module, applied to the display module according to any one of claims 1 to 5, comprising: monitoring data signals received by each pixel row of a display area in real time, determining whether a display picture changes from black to white according to the data signals, and determining the pixel row corresponding to the display picture changes from black to white; when the display picture is determined to be free from black to white, the control grid driving circuit adopts a first driving mode to drive and scan each pixel row by row; When the display picture is determined to have black-to-white, the control grid driving circuit is switched to a second driving mode, and pixel rows corresponding to the black-to-white of the scanning display picture are driven row by row; The square wave width duration of the scanning signal in the second driving mode is smaller than that of the scanning signal in the first driving mode, and the square wave width duration of the scanning signal in the second driving mode is smaller than or equal to half-row pixel scanning driving time.

Description

Display module, driving method thereof and display device Technical Field The application relates to the technical field of display, in particular to a display module, a driving method thereof and a display device. Background The Dual Gate technology is widely used in display modules nowadays, which not only saves the cost of ICs (INTEGRATED CIRCUIT, integrated circuits) but also reduces the number of ICs of high PPI (pixels per inch) products and improves Bonding defects of the display modules. The existing Dual Gate pixel structure is mainly characterized in that a row of pixels are correspondingly connected with two Gate lines, sub-pixels connected with different Gate lines can be connected with the same Data line, and the pixel structure can reduce the driving power consumption of a display module. However, when the display screen is changed from black to white, the conventional Dual Gate pixel structure display module has the technical problem of black smear. Disclosure of Invention The application provides a display module, a driving method thereof and a display device aiming at the defects of the prior art, which are used for solving the technical problem that when a display picture is changed from black to white, a black smear exists in the display module with a Dual Gate pixel structure in the prior art. In a first aspect, an embodiment of the present application provides a display module, including a gate driving circuit and a display panel, where a display area of the display panel includes a plurality of pixel rows, each pixel row includes a plurality of repeating units, each repeating unit includes a first pixel unit and a second pixel unit, the first pixel unit is electrically connected to the gate driving circuit through an even gate line, and the second pixel unit is electrically connected to the gate driving circuit through an odd gate line; When the black to white display picture of the display area is not monitored, the grid driving circuit adopts a first driving mode to drive and scan each pixel row by row; When the display picture of the display area is monitored to be changed from black to white, the grid driving circuit is switched to a second driving mode, and pixel rows corresponding to the black to white of the scanning display picture are driven row by row; The square wave width duration of the scanning signal in the second driving mode is smaller than that of the scanning signal in the first driving mode, and the square wave width duration of the scanning signal in the second driving mode is smaller than or equal to half-row pixel scanning driving time; Or two adjacent frames of display pictures, wherein one frame of display picture drives and scans each pixel row line by line, and each pixel row drives and scans the second pixel unit connected with the odd grid line, and then drives and scans the first pixel unit connected with the even grid line, and the other frame of display picture drives and scans each pixel row line by line, and each pixel row drives and scans the first pixel unit connected with the even grid line, and then drives and scans the second pixel unit connected with the odd grid line. In one possible implementation, the square wave width of the scan signal of the first driving mode is longer than the half-line pixel scan driving time. In one possible implementation, the first driving mode and the second driving mode are adopted, and each pixel row is driven to scan the second pixel units connected with the odd-numbered gate lines in a driving mode, and then the first pixel units connected with the even-numbered gate lines in a driving mode. In one possible implementation, each pixel row is driven and scanned row by row in an odd frame, and each pixel row is driven and scanned by a first pixel unit connected with an odd gate line and then a first pixel unit connected with an even gate line; Or in the even frame, each pixel row is driven and scanned row by row, each pixel row is driven and scanned by a first pixel unit connected with an odd grid line, and then a first pixel unit connected with an even grid line is driven and scanned row by row, in the odd frame, each pixel row is driven and scanned row by row, each pixel row is driven and scanned by a first pixel unit connected with an even grid line, and then a second pixel unit connected with an odd grid line is driven and scanned. In one possible implementation, the next row scan signal is delayed by half a row of pixel scan driving time compared to the current row scan signal. In one possible implementation, the first pixel unit includes two pixels, and the second pixel unit includes two pixels, each including a red sub-pixel, a green sub-pixel, and a blue sub-pixel; The first pixel unit is connected with the even grid lines, and the second pixel unit is connected with the odd grid lines; corresponding sub-pixels of the same color of the first pixel unit and the second pixel unit in one repeating unit are conn