Driving control module, driving control method, double-layer panel, and display device

Patent metadata

Field	Value
Publication number	US-12149649-B2
Application number	US-202117904181-A
Country	US
Kind code	B2
Filing date	Aug 12, 2021
Priority date	Sep 16, 2020
Publication date	Nov 19, 2024
Grant date	Nov 19, 2024

Abstract

The present disclosure provides a driving control module, a driving control method, a double-layer panel, and a display device. The driving control module is applied to the double-layer panel, the double-layer panel includes a first panel and a second panel, the first panel is a touch display panel, the second panel is a display panel, and the driving control module includes a control circuitry. The control circuitry is electrically coupled to the first panel and the second panel, and configured to control a touch stage of the first panel to be arranged within a spacing stage of the second panel, the first panel is configured to perform touch detection in the touch stage, and the spacing stage includes at least one of a scanning blank stage, a frame start time of image display time period, and a frame end time of the image display time period.

First claim

The invention claimed is:

1. A driving control module for a double-layer panel, wherein the double-layer panel comprises a first panel and a second panel, the first panel is a touch display panel, the second panel is a display panel, and the driving control module comprises a control circuitry, wherein the control circuitry is electrically coupled to the first panel and the second panel, and configured to control a touch stage of the first panel to be arranged within a spacing stage of the second panel, the first panel is configured to perform touch detection in the touch stage, and the spacing stage comprises at least one of a scanning blank stage, a frame start time of an image display time period, and a frame end time of the image display time period;
wherein the spacing stage comprises the scanning blank stage, the scanning blank stage comprises an inter-frame blank time period, and the control circuitry is configured to control the first panel to perform the touch detection in the touch stage in an inter-frame blank time period of the first panel and control the inter-frame blank time period of the first panel to at least partially overlap the inter-frame blank time period of the second panel;
wherein the control circuitry is configured to control a refresh rate of the first panel to be the same as a refresh rate of the second panel, and control frame synchronization between the first panel and the second panel;
wherein the control circuitry is specifically configured to control a time interval between a scanning start time of the first panel and a scanning start time of the second panel to be less than or equal to a first error time, and the spacing stage comprises the frame start time of the image display time period or the frame end time of the image display time period.

2. The driving control module according to claim 1 , wherein the control circuitry is specifically configured to control the inter-frame blank time period of the first panel to coincide with the inter-frame blank time period of the second panel, so as to enable the touch stage of the first panel to be arranged within the inter-frame blank time period of the second panel.

3. The driving control module according to claim 1 , wherein a ratio of the first error time to the image display time period is less than or equal to 0.05.

4. The driving control module according to claim 1 , wherein a ratio of a duration of the touch stage to a duration of the inter-frame blank time period is greater than or equal to 0.2 and less than or equal to 0.6, the touch stage is arranged within the inter-frame blank time period of the first panel, and a ratio of a time difference between a start time of the touch stage and a start time of the inter-frame blank time period to the duration of the inter-frame blank time period is less than or equal to 0.4.

5. The driving control module according to claim 1 , wherein the control circuitry is specifically configured to control the second panel to stop display driving when the first panel performs the touch detection.

6. The driving control module according to claim 5 , wherein t the control circuitry is further configured to control the second panel to continue displaying a current image when the first panel performs the touch detection and control to continue scanning the second panel from a gate line to be scanned in the second panel when the first panel enters a display stage, and the gate line to be scanned is a gate line next to a last scanned gate line in the second panel before the first panel performs the touch detection.

7. The driving control module according to claim 5 , wherein the control circuitry comprises a first driving control sub-circuitry, a control sub-circuitry and a second driving control sub-circuitry;
the first driving control sub-circuitry is electrically coupled to the first panel and configured to output a touch indication signal in accordance with a touch state of the first panel;
the control sub-circuitry is electrically coupled to the first driving control sub-circuitry and the second driving control sub-circuitry, and configured to receive the touch indication signal, provide a driving stop control signal to the second driving control sub-circuitry when the touch indication signal indicates the first panel to enter the touch stage, and provide a driving control signal to the second driving control sub-circuitry when the touch indication signal indicates the first panel to enter the display stage; and
the second driving control sub-circuitry is electrically coupled to the second panel, and configured to control to stop scanning all gate lines in the second panel in response to the received driving stop control signal, record a serial number N of the last scanned gate line in the second panel before the reception of the driving stop control signal, and control to continue scanning from an (N+1) th gate line in the second panel in response to the driving control signal, where N is a positive integer.

8. The driving control module according to claim 7 , wherein the second driving control sub-circuitry is specifically configured to, in response to the driving stop control signal, control to provide a first voltage signal to all the gate lines in the second panel to control to stop scanning all the gate lines, and control to stop providing a data voltage to all data lines in the second panel.

9. The driving control module according to claim 8 , wherein the first voltage signal is a direct current voltage signal.

10. The driving control module according to claim 7 , wherein the second driving control sub-circuitry is specifically configured to, in response to the driving stop control signal, control to provide a predetermined gate driving signal to all the gate lines in the second panel, and control to provide a predetermined voltage signal to all data lines in the second panel, the predetermined gate driving signal is a signal generated through superposing a second voltage signal on the touch driving signal, the predetermined voltage signal is a signal generated through superposing a third voltage signal on the touch driving signal, and the touch driving signal is a signal on a touch driving line in the first panel when the first panel is in the touch state.

11. The driving control module according to claim 10 , wherein the second voltage signal and the third voltage signal are direct current voltage signals.

12. The driving control module according to claim 7 , wherein the first driving control sub-circuitry is specifically configured to continuously detect the touch state of the first panel after the first panel has been started.

13. The driving control module according to claim 1 , wherein the control circuitry is further configured to control the first panel to be started and control the second panel to be started after the first panel has been started when the double-layer panel is started.

14. A driving control method for the driving control module according to claim 1 , comprising controlling, by the control circuitry, the touch stage of the first panel to be arranged within the spacing stage of the second panel, wherein the spacing stage comprises at least one of the scanning blank stage, the frame start time of the image display time period, and the frame end time of the image display time period.

15. The driving control method according to claim 14 , wherein the spacing stage comprises the scanning blank stage, the scanning blank stage comprises the inter-frame blank time period, and the driving control method further comprises controlling, by the control circuitry, the first panel to perform the tou

Assignees

• Beijing Boe Optoelectronics Tech Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Li Pengtao
• Han Rui
• Yu Jie
• Ma Qing
• Yoon Daekeun
• Cui Dong
• Tian Li

Classifications

• H04M1/0249

  Details of the mechanical connection between the housing parts or relating to the method of assembly · CPC title

• G09G3/00

  Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes · CPC title

• G06F3/044

  by capacitive means · CPC title

• H04M1/0266 Primary

  for a display module assembly · CPC title

• G06F3/041 Primary

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title