CN118819339A - Driving method of touch display module and touch display module - Google Patents

Abstract

The present application relates to a driving method of a touch display module and a touch display module. The driving method of the touch display module executes a second driving sequence from the next frame scanning cycle when an electromagnetic induction signal is recognized in the current frame scanning cycle. The second driving sequence includes a first driving cycle and a second driving cycle that are alternately set. In any frame scanning cycle of the first driving cycle, display data writing and capacitive touch scanning are performed in a time-sharing manner. In any frame scanning cycle of the second driving cycle, the display data writing of the previous frame is maintained and capacitive touch scanning and electromagnetic touch scanning are performed in a time-sharing manner. The present application maintains the display data writing of the previous frame in any frame scanning cycle of the second driving cycle, and reserves the time of any frame scanning cycle of the second driving cycle for capacitive touch scanning and electromagnetic touch scanning, so that capacitive touch and electromagnetic touch can work at the same time; the first driving sequence and the second driving sequence are used to control the touch display module respectively to adapt to various scenarios.

Description

Driving method of touch display module and touch display module

Technical Field

The present application relates to the field of display technology, and in particular to a driving method of a touch display module and a touch display module.

Background Art

At present, the stylus pens on the market are mainly divided into two categories, electromagnetic pens and capacitive pens. The driving principle of the capacitive pen is similar to the principle of human fingers touching the screen. The capacitive pen can be regarded as a substitute for the finger, except that it transmits more information than the finger, and the sensing accuracy is also much greater than the finger. Compared with the capacitive pen, the advantages of the electromagnetic pen mainly include high writing accuracy, anti-mistouch, small pen tip, support for suspension sensing, long life, etc. In electromagnetic touch technology, the electromagnetic screen and electromagnetic pen need to be used together. The bottleneck of the early application of electromagnetic pens is mainly that a layer of electromagnetic induction device needs to be added to the display screen, which will increase the thickness of the whole machine. A possible solution at present is to make the electromagnetic induction device into the display screen, that is, to directly design and make the electromagnetic induction coil in the display screen, so as to directly solve the thickness problem caused by the increase in the stacking structure.

However, when the electromagnetic induction device is designed and manufactured into a display screen, since the display screen usually already includes a display and capacitive touch drive circuit, as the resolution and refresh rate in display applications continue to increase, the display time in the timing control has been compressed to a relatively extreme level, and the time left for electromagnetic work in the timing control is getting less and less, resulting in the time for the capacitive touch drive in the current timing control being left for the electromagnetic pen to perform scanning and reporting actions, resulting in the capacitive touch and electromagnetic pen being unable to work at the same time.

Summary of the invention

The purpose of the present application is to provide a driving method and a touch display module, which can solve the technical problem in the prior art that the time of the capacitive touch driving in the current timing control is reserved for the electromagnetic pen to perform scanning and reporting actions, resulting in the capacitive touch and the electromagnetic pen being unable to work at the same time.

In order to solve the above problems, the present application provides a driving method for a touch display module, the driving method comprising: if an electromagnetic induction signal is not recognized in the current frame scanning cycle, executing a first driving timing from the next frame scanning cycle until the electromagnetic induction signal is recognized; in any frame scanning cycle of the first driving timing, display data writing, capacitive touch scanning and electromagnetic touch pre-scanning are performed in a time-sharing manner; if an electromagnetic induction signal is recognized in the current frame scanning cycle, executing a second driving timing from the next frame scanning cycle until the electromagnetic induction signal is not recognized; the second driving timing comprises an alternating first driving cycle and a second driving cycle, in any frame scanning cycle of the first driving cycle, display data writing and capacitive touch scanning are performed in a time-sharing manner, and in any frame scanning cycle of the second driving cycle, the display data writing of the previous frame is maintained and the capacitive touch scanning and electromagnetic touch scanning are performed in a time-sharing manner.

In some embodiments, the first driving period includes one frame scanning period, and the second driving period includes one frame scanning period.

In some embodiments, any frame scanning period of the first driving cycle includes: at least one first display data writing period for performing display data writing; and at least one first capacitive touch scanning period for performing capacitive touch scanning, and the first display data writing period and the first capacitive touch scanning period are alternately arranged.

In some embodiments, any frame scanning period of the second driving period includes: at least one second capacitive touch scanning period for performing capacitive touch scanning; and at least one electromagnetic touch scanning period for performing electromagnetic touch scanning.

In some embodiments, any frame scanning period of the second driving period includes a plurality of second capacitive touch scanning periods and a plurality of electromagnetic touch scanning periods; wherein two electromagnetic touch scanning periods are arranged between any two adjacent second capacitive touch scanning periods.

In some embodiments, the first driving cycle includes two frame scanning cycles, and the second driving cycle includes one frame scanning cycle.

In some embodiments, any frame scanning cycle of the first driving timing includes: at least one second display data writing period for performing display data writing; at least one third capacitive touch scanning period for performing capacitive touch scanning; and at least one electromagnetic touch pre-scanning period for performing electromagnetic touch pre-scanning.

In some embodiments, any frame scanning cycle of the first driving timing includes multiple second display data writing periods, multiple third capacitive touch scanning periods and multiple electromagnetic touch pre-scanning periods; wherein, in any frame scanning cycle of the first driving timing, the second display data writing period and the third capacitive touch scanning period are executed alternately, and after the third capacitive touch scanning period is completed, the second display data writing period and the electromagnetic touch pre-scanning period are executed alternately, and after the electromagnetic touch pre-scanning period is completed, the second display data writing period and the third capacitive touch scanning period continue to be executed alternately.

In some embodiments, the driving method also includes: confirming that the target program of the touch display module is not running, and if an electromagnetic induction signal is recognized in the current frame scanning cycle, executing the second driving timing from the next frame scanning cycle; confirming that the target program of the touch display module is running, and if an electromagnetic induction signal is recognized in the current frame scanning cycle, executing the first driving timing from the next frame scanning cycle.

In order to solve the above problems, the present application also provides a touch display module, which includes a touch display panel and a processor. The processor adopts the driving method of the touch display module of the present application to drive the touch display panel.

The driving method of the touch display module of the present application executes a second driving sequence from the next frame scanning cycle when an electromagnetic induction signal is recognized in the current frame scanning cycle. The second driving sequence includes a first driving cycle and a second driving cycle that are alternately set. In any frame scanning cycle of the first driving cycle, display data writing and capacitive touch scanning are performed in a time-sharing manner. In any frame scanning cycle of the second driving cycle, the display data writing of the previous frame is maintained and capacitive touch scanning and electromagnetic touch scanning are performed in a time-sharing manner. By maintaining the display data writing of the previous frame in any frame scanning cycle of the second driving cycle, the time of any frame scanning cycle of the second driving cycle is reserved for capacitive touch scanning and electromagnetic touch scanning, thereby enabling capacitive touch and electromagnetic touch to work simultaneously.

The present application confirms that the target program of the touch display module is not running, and if an electromagnetic induction signal is recognized in the current frame scanning cycle, the second driving timing is executed from the next frame scanning cycle; when it is confirmed that the target program of the touch display module is running, and if an electromagnetic induction signal is recognized in the current frame scanning cycle, the first driving timing is executed from the next frame scanning cycle. In this way, the first driving timing and the second driving timing can be used to control the touch display module respectively, so that the touch display module can be applicable to the target program or the non-target program to meet the needs of various application scenarios.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

FIG1 is a schematic diagram of a first flow chart of a method for driving a touch display module provided in an embodiment of the present application;

FIG2 is a schematic diagram of a first driving timing of a touch display module provided in an embodiment of the present application;

FIG3 is a schematic diagram 1 of a second driving timing of a touch display module provided in an embodiment of the present application;

FIG4 is a second schematic diagram of a second driving timing of a touch display module provided in an embodiment of the present application;

FIG5 is a second flow chart of a method for driving a touch display module provided in an embodiment of the present application;

6 is a schematic diagram of a first driving timing sequence and a second driving timing sequence of a driving method for a touch display module provided by an embodiment of the present application in combination;

FIG. 7 is a schematic diagram of the structure of a touch display module provided in an embodiment of the present application.

DETAILED DESCRIPTION

The preferred embodiments of the present invention are described in detail below in conjunction with the drawings in the specification, so as to fully introduce the technical content of the present invention to those skilled in the art, to illustrate that the present invention can be implemented, to make the technical content disclosed in the present invention clearer, and to make it easier for those skilled in the art to understand how to implement the present invention. However, the present invention can be embodied through many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned in the text, and the description of the embodiments below is not intended to limit the scope of the present invention.

The directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., are only directions in the drawings. The directional terms used in this article are used to explain and illustrate the present invention, rather than to limit the scope of protection of the present invention.

In the drawings, components with the same structure are represented by the same numerical numerals, and components with similar structures or functions are represented by similar numerical numerals. In addition, for ease of understanding and description, the size and thickness of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each component.

Please refer to FIG1 , which is a flowchart of a method for driving a touch display module provided by an embodiment of the present application. The method for driving a touch display module includes: if an electromagnetic induction signal is not recognized in the current frame scanning cycle, a first driving sequence is executed from the next frame scanning cycle until an electromagnetic induction signal is recognized; in any frame scanning cycle of the first driving sequence, display data writing, capacitive touch scanning and electromagnetic touch pre-scanning are performed in time-sharing manner; if an electromagnetic induction signal is recognized in the current frame scanning cycle, a second driving sequence is executed from the next frame scanning cycle until no electromagnetic induction signal is recognized; the second driving sequence includes an alternately set first driving cycle T1 and a second driving cycle T2, in any frame scanning cycle of the first driving cycle T1, display data writing and capacitive touch scanning are performed in time-sharing manner, and in any frame scanning cycle of the second driving cycle T2, the display data writing of the previous frame is maintained and capacitive touch scanning and electromagnetic touch scanning are performed in time-sharing manner.

The present application maintains the display data writing of the previous frame in any frame scanning period of the second driving period T2, and reserves the time of any frame scanning period of the second driving period T2 for capacitive touch scanning and electromagnetic touch scanning, thereby allowing capacitive touch and electromagnetic touch to work simultaneously.

In the embodiment of the present application, the electromagnetic induction signal is generated by an electromagnetic induction device, which is an electromagnetic pen. In some other embodiments, the type of the electromagnetic induction device is not limited to the electromagnetic pen, but can also be other devices for realizing the electromagnetic touch function.

It is worth noting that display data writing refers to updating the brightness data of the pixel. For example, for a liquid crystal display (LCD), display data writing refers to updating the pixel voltage. Capacitive touch scanning is the identification of a capacitive device (such as a human finger), and electromagnetic touch scanning is the identification of an electromagnetic induction device.

Please refer to Figure 2, which is a schematic diagram of the first driving timing of the touch display module provided in an embodiment of the present application. In some embodiments, any frame scanning period of the first driving timing includes: at least one second display data writing period t1, at least one third capacitive touch scanning period t2, and at least one electromagnetic touch pre-scanning period t3.

In some embodiments, the second display data writing period t1 is used to write display data, the third capacitive touch scanning period t2 is used to perform capacitive touch scanning, and the electromagnetic touch pre-scanning period t3 is used to perform electromagnetic touch pre-scanning.

In some embodiments, any frame scanning period of the first driving sequence includes a plurality of second display data writing periods t1, a plurality of third capacitive touch scanning periods t2, and a plurality of electromagnetic touch pre-scanning periods t3. In any frame scanning period of the first driving sequence, the second display data writing period t1 and the third capacitive touch scanning period t2 are executed alternately, and after the third capacitive touch scanning period t2 is executed, the second display data writing period t1 and the electromagnetic touch pre-scanning period t3 are executed alternately, and after the electromagnetic touch pre-scanning period t3 is executed, the second display data writing period t1 and the third capacitive touch scanning period t2 continue to be executed alternately.

Exemplarily, in any frame scanning cycle of the first driving timing, the second display data writing period t1 is first executed, and after the second display data writing period t1 is completed, the third capacitive touch scanning period t2 is continued to be executed, and after the third capacitive touch scanning period t2 is completed, the second display data writing period t1 is continued to be executed, and after the second display data writing period t1 is completed, the electromagnetic touch pre-scanning period t3 is continued to be executed. After the electromagnetic touch pre-scanning period t3 is completed, the second display data writing period t1 and the third capacitive touch scanning period t2 are continued to be executed alternately, and the second display data writing period t1 and the electromagnetic touch pre-scanning period t3 are alternately executed, and this cycle is continuously repeated until any frame scanning cycle is completed.

Please refer to Figure 3, which is a schematic diagram of the second driving timing of the touch display module provided by the embodiment of the present application. In some embodiments, the first driving cycle T1 includes a frame scanning cycle, and the second driving cycle T2 includes a frame scanning cycle.

In some embodiments, any frame scanning period of the first driving period T1 includes: at least one first display data writing period t4 and at least one first capacitive touch scanning period t5.

In some embodiments, the first display data writing period t4 is used to perform display data writing. The first capacitive touch scanning period t5 is used to perform capacitive touch scanning.

In some embodiments, the first display data writing period t4 and the first capacitive touch scanning period t5 are alternately arranged.

Exemplarily, in any frame scanning period of the first driving period T1, the first display data writing period t4 is first executed, and after the first display data writing period t4 is completed, the first capacitive touch scanning period t5 is continued to be executed. After the first capacitive touch scanning period t5 is completed, the first display data writing period t4 and the first capacitive touch scanning period t5 are continued to be executed alternately.

Please continue to refer to FIG. 3 . In some embodiments, any frame scanning period of the second driving period T2 includes: at least one second capacitive touch scanning period t6 and at least one electromagnetic touch scanning period t7 .

In some embodiments, the second capacitive touch scanning period t6 is used to perform capacitive touch scanning. The electromagnetic touch scanning period t7 is used to perform electromagnetic touch scanning.

In some embodiments, any frame scanning period of the second driving period T2 includes a plurality of second capacitive touch scanning periods t6 and a plurality of electromagnetic touch scanning periods t7, wherein two electromagnetic touch scanning periods t7 are arranged between any two adjacent second capacitive touch scanning periods t6.

It is worth noting that the second capacitive touch scanning period t6 and the electromagnetic touch scanning period t7 and any two adjacent electromagnetic touch scanning periods t7 all have a blank period t8 in which display data writing is not performed but the display data writing of the previous frame is maintained.

Exemplarily, in any frame scanning cycle of the second driving cycle T2, a blank period t8 is first interval, and then the second capacitive touch scanning period t6 is executed. After the second capacitive touch scanning period t6 is executed, a blank period t8 is interval, and then the electromagnetic touch scanning period t7 is continued to be executed. After the electromagnetic touch scanning period t7 is completed, a blank period t8 is interval, and then the electromagnetic touch scanning period t7 is executed. This cycle is repeated until any frame scanning cycle is completed.

Please refer to Figure 4, which is a second schematic diagram of the second driving timing of the touch display module provided by the embodiment of the present application. In other embodiments, the first driving cycle T1 includes two frame scanning cycles, and the second driving cycle T2 includes one frame scanning cycle.

Exemplarily, in the second driving timing, the first frame scanning cycle in the first driving cycle T1 is executed first, and after the first frame scanning cycle in the first driving cycle T1 is completed, the second frame scanning cycle in the first driving cycle T1 is executed, and after the second frame scanning cycle in the first driving cycle T1 is completed, the frame scanning cycle in the second driving cycle T2 is executed.

In any frame scanning period of the first driving period T1, the first display data writing period t4 is first executed, and after the first display data writing period t4 is completed, the first capacitive touch scanning period t5 is continued to be executed. After the first capacitive touch scanning period t5 is completed, the first display data writing period t4 and the first capacitive touch scanning period t5 are continued to be executed alternately.

In any frame scanning cycle of the second driving cycle T2, a blank period t8 is firstly interval, and then the second capacitive touch scanning period t6 is executed. After the second capacitive touch scanning period t6 is executed, a blank period t8 is interval, and then the electromagnetic touch scanning period t7 is continued to be executed. After the electromagnetic touch scanning period t7 is completed, a blank period t8 is interval, and then the electromagnetic touch scanning period t7 is executed. This cycle is repeated until any frame scanning cycle is completed.

It is understandable that, in other embodiments, the first driving period T1 and the second driving period T2 may also include other numbers of frame scanning periods respectively, which may be set according to actual conditions and requirements, and the embodiments of the present application do not specifically limit this.

Through the above scheme, the present application maintains the writing of the display data of the previous frame in any frame scanning period of the second drive period T2, and reserves the time of any frame scanning period of the second drive period T2 for capacitive touch scanning and electromagnetic touch scanning, thereby allowing capacitive touch and electromagnetic touch to work simultaneously.

In some examples, when no electromagnetic induction signal is recognized in Frame2 in FIG. 2 , the first driving sequence is executed starting from the next frame scanning period Frame3 until an electromagnetic induction signal is recognized.

In some examples, an electromagnetic induction signal is recognized in Frame2 in FIG. 2 , and the first driving period T1 and the second driving period T2 of the second driving sequence in FIG. 3 are alternately executed starting from the next frame scanning period until no electromagnetic induction signal is recognized.

Exemplarily, the process from recognizing an electromagnetic induction signal to not recognizing an electromagnetic induction signal refers to the electromagnetic induction signal emitted by the electromagnetic pen persisting on the display screen for a period of time, and then disappearing due to the electromagnetic pen leaving the display screen, so that the display screen no longer recognizes the electromagnetic induction signal.

Through the above scheme, the present application maintains the display data writing of the previous frame in any frame scanning period of the second drive period T2, and leaves the time of any frame scanning period of the second drive period T2 for capacitive touch scanning and electromagnetic touch scanning, so that capacitive touch and electromagnetic touch can work at the same time. It is worth noting that although the execution of the second drive timing will reduce the display refresh rate of the touch display module, the current refresh rate of the touch display module is getting higher and higher. For example, the original frame rate is 240Hz, and after reducing to 120Hz, it still does not affect the smoothness and experience of the electromagnetic induction device. Therefore, this application is still quite suitable for non-target programs such as writing and painting that do not have too high requirements on resolution and frame rate.

Please refer to Figure 5, which is a flow chart of the second method for driving the touch display module provided by the embodiment of the present application. In some embodiments, the driving method further includes: confirming that the target program of the touch display module is not running, and if an electromagnetic induction signal is recognized in the current frame scanning cycle, executing the second driving timing from the next frame scanning cycle; confirming that the target program of the touch display module is running, and if an electromagnetic induction signal is recognized in the current frame scanning cycle, executing the first driving timing from the next frame scanning cycle. That is, when the target program is running, regardless of whether the electromagnetic induction signal is recognized, the first driver program will be executed in the next frame scanning cycle; when the target program is not running and the electromagnetic induction signal is not recognized in the current frame scanning cycle, the first driver program will be executed in the next frame scanning cycle; only when the target program is not running and the electromagnetic induction signal is recognized in the current frame scanning cycle, the second driver program will be executed in the next frame scanning cycle. It is worth noting that the target program running refers to running programs that require extremely high resolution, such as video playback and games. The target program not running refers to running programs that do not require extremely high resolution, such as writing and painting.

Through the above scheme, when the target program is running, regardless of whether the electromagnetic induction signal is recognized, the first driver program will be executed in the next frame scanning cycle. Therefore, when the target program such as video playback and games is running, even if the electromagnetic induction signal is recognized, the first driver program is still executed, and the second driver program is not executed. Therefore, the second display data writing period t1 can be used to perform display data writing, which does not affect the resolution and frame rate of the touch display module. When the target program is not running and the electromagnetic induction signal is recognized in the current frame scanning cycle, the second driver program is executed in the next frame scanning cycle. Therefore, when non-target programs such as writing and painting are running, due to the relatively high refresh rate of the current touch display module, even if the display refresh rate of the touch display module is reduced when the second driver program is executed, it still does not affect the smoothness and experience of the electromagnetic induction device. Please refer to Figure 6, which is a schematic diagram of the first drive timing and the second drive timing used in combination with the driving method of the touch display module provided in an embodiment of the present application. The target program is running on the right side of the touch display module 100 of Figure 6. When the electromagnetic induction signal is recognized, the first driving timing is still executed in the next frame scanning cycle; the target program is not running on the left side of the touch display module 100 of Figure 6. When the electromagnetic induction signal is recognized, the second driving timing is executed starting from the next frame scanning cycle.

Through the above scheme, the present application can use the first driving timing and the second driving timing to respectively control the touch display module, so that the touch display module can be suitable for target programs (video playback, games, etc.) and non-target programs (writing, painting, etc.) to meet the needs of various application scenarios.

Please refer to Figure 7, which is a schematic diagram of the structure of a touch display module provided in an embodiment of the present application. The touch display module includes a touch display panel and a processor, and the processor drives the touch display panel using the driving method of the touch display module in an embodiment of the present application.

In some embodiments, the touch display module 100 includes a display panel 1 and a touch display driving device 2 . The touch display driving device 2 includes a judgment module 21 and a touch display driving module 22 . The judgment module 21 is electrically connected to the touch display driving module 22 .

The determination module 21 is used to determine whether an electromagnetic induction signal is recognized in the current frame scanning period.

The touch display driving module 22 is used to execute the first driving sequence from the next frame scanning cycle until the electromagnetic induction signal is recognized when the electromagnetic induction signal is not recognized in the current frame scanning cycle. In any frame scanning cycle of the first driving sequence, display data writing, capacitive touch scanning and electromagnetic touch pre-scanning are performed in a time-sharing manner.

The touch display driving module 22 is also used to execute the second driving sequence from the next frame scanning cycle when the electromagnetic induction signal is recognized in the current frame scanning cycle until the electromagnetic induction signal is not recognized. The second driving sequence includes the first driving cycle T1 and the second driving cycle T2 which are alternately set. In any frame scanning cycle of the first driving cycle T1, the display data writing and the capacitive touch scanning are performed in time sharing. In any frame scanning cycle of the second driving cycle T2, the display data writing of the previous frame is maintained and the capacitive touch scanning and the electromagnetic touch scanning are performed in time sharing.

In some embodiments, the touch display driving module 22 includes a second display driving submodule 221, a third capacitive touch driving submodule 222, and an electromagnetic touch pre-scanning driving submodule 223. Any frame scanning period of the first driving timing includes: at least one second display data writing period t1, at least one third capacitive touch scanning period t2, and at least one electromagnetic touch pre-scanning period t3. The second display driving submodule 221 is used to perform display data writing in the second display data writing period t1; the third capacitive touch driving submodule 222 is used to perform capacitive touch scanning in the third capacitive touch scanning period t2; and the electromagnetic touch pre-scanning period t3 is used to perform electromagnetic touch pre-scanning in the electromagnetic touch pre-scanning period t3.

In some embodiments, any frame scanning period of the first driving sequence includes a plurality of second display data writing periods t1, a plurality of third capacitive touch scanning periods t2, and a plurality of electromagnetic touch pre-scanning periods t3. In any frame scanning period of the first driving sequence, the second display driving submodule 221 and the third capacitive touch driving submodule 222 alternately execute the second display data writing period t1 and the third capacitive touch scanning period t2, after the third capacitive touch driving submodule 222 completes the third capacitive touch scanning period t2, the second display driving submodule 221 and the electromagnetic touch pre-scanning driving submodule 223 alternately execute the second display data writing period t1 and the electromagnetic touch pre-scanning period t3, after the electromagnetic touch pre-scanning driving submodule 223 completes the electromagnetic touch pre-scanning period t3, the second display driving submodule 221 and the third capacitive touch driving submodule 222 continue to alternately execute the second display data writing period t1 and the third capacitive touch scanning period t2.

In some embodiments, the touch display driving module 22 further includes a first display driving submodule 224 and a first capacitive touch driving submodule 225. Any frame scanning period of the first driving period T1 includes: at least one first display data writing period t4 and at least one first capacitive touch scanning period t5. The first display driving submodule 224 is used to write display data in the first display data writing period t4; the first capacitive touch driving submodule 225 is used to perform capacitive touch scanning in the first capacitive touch scanning period t5. The first display driving submodule 224 and the first capacitive touch driving submodule 225 alternately execute the first display data writing period t4 and the first capacitive touch scanning period t5.

In some embodiments, the touch display driving module 22 further includes a second capacitive touch submodule 226 and an electromagnetic touch driving submodule 227. Any frame scanning period of the second driving period T2 includes: at least one second capacitive touch scanning period t6 and at least one electromagnetic touch scanning period t7. The second capacitive touch submodule 226 is used to perform capacitive touch scanning in the second capacitive touch scanning period t6; the electromagnetic touch driving submodule 227 is used to perform electromagnetic touch scanning in the electromagnetic touch scanning period t7.

In some embodiments, any frame scanning period of the second driving period T2 includes a plurality of second capacitive touch scanning periods t6 and a plurality of electromagnetic touch scanning periods t7. Between two adjacent second capacitive touch scanning periods t6 executed by the second capacitive touch submodule 226, the electromagnetic touch driving submodule 227 executes two electromagnetic touch scanning periods t7 at intervals.

Through the above scheme, the present application maintains the writing of the display data of the previous frame in any frame scanning period of the second drive period T2, and reserves the time of any frame scanning period of the second drive period T2 for capacitive touch scanning and electromagnetic touch scanning, thereby allowing capacitive touch and electromagnetic touch to work simultaneously.

The judgment module is also used to judge whether the target program is running.

The touch display driving module 22 is used for identifying the electromagnetic induction signal in the current frame scanning period when the target program of the touch display module is not running, and executing the second driving sequence from the next frame scanning period.

The touch display driver module 22 is also used to, when confirming that the target program of the touch display module has been run, recognize the electromagnetic induction signal in the current frame scanning cycle, and execute the first driving sequence from the next frame scanning cycle. It is worth noting that, when confirming that the target program of the touch display module has been run, regardless of whether the electromagnetic induction signal is recognized, the first driver program will be executed in the next frame scanning cycle.

Through the above scheme, the present application can use the first driving timing and the second driving timing to respectively control the touch display module, so that the touch display module can be suitable for target programs (video playback, games, etc.) and non-target programs (writing, painting, etc.) to meet the needs of various application scenarios.

The driving method and touch display module of a touch display module provided by the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the core idea of the present application. At the same time, for technical personnel in this field, according to the idea of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims (10)

1. The driving method of the touch display module is characterized by comprising the following steps of:

If the electromagnetic induction signal is not recognized in the current frame scanning period, executing a first driving time sequence from the next frame scanning period until the electromagnetic induction signal is recognized;

performing display data writing, capacitive touch scanning and electromagnetic touch pre-scanning in a time sharing mode in any frame scanning period of the first driving time sequence;

If the electromagnetic induction signal is identified in the current frame scanning period, executing a second driving time sequence from the next frame scanning period until the electromagnetic induction signal is not identified;

The second driving time sequence comprises a first driving period (T1) and a second driving period (T2) which are alternately arranged, display data writing and capacitive touch scanning are performed in a time sharing mode in any frame scanning period of the first driving period (T1), and display data writing and capacitive touch scanning and electromagnetic touch scanning of the previous frame are maintained in any frame scanning period of the second driving period (T2).

2. The method for driving a touch display module according to claim 1, wherein the first driving period (T1) includes one of the frame scanning periods, and the second driving period (T2) includes one of the frame scanning periods.

3. The method of driving a touch display module according to claim 2, wherein any one of the frame scan periods of the first driving period (T1) includes:

At least one first display data writing period (t 4) for performing display data writing; and

And at least one first capacitive touch scanning period (t 5) for performing capacitive touch scanning, wherein the first display data writing period (t 4) and the first capacitive touch scanning period (t 5) are alternately arranged.

4. The method of driving a touch display module according to claim 2, wherein any one of the frame scan periods of the second driving period (T2) includes:

at least one second capacitive touch scan period (t 6) for performing capacitive touch scan;

At least one electromagnetic touch scanning period (t 7) for performing an electromagnetic touch scanning.

5. The driving method of a touch display module according to claim 4, wherein any one of the frame scan periods of the second driving period (T2) includes a plurality of the second capacitive touch scan periods (T6) and a plurality of the electromagnetic touch scan periods (T7);

two electromagnetic touch scanning periods (t 7) are arranged between any two adjacent second capacitive touch scanning periods (t 6) at intervals.

6. The method for driving a touch display module according to claim 1, wherein the first driving period (T1) includes two frame scanning periods, and the second driving period (T2) includes one frame scanning period.

7. The method of claim 1, wherein any one frame scanning period of the first driving timing sequence comprises:

at least one second display data writing period (t 1) for performing display data writing;

At least one third capacitive touch scan period (t 2) for performing capacitive touch scan; and

At least one electromagnetic touch pre-scan period (t 3) for performing an electromagnetic touch pre-scan.

8. The method for driving a touch display module according to claim 7, wherein any one frame of the scanning period of the first driving timing includes a plurality of second display data writing periods (t 1), a plurality of third capacitive touch scanning periods (t 2), and a plurality of electromagnetic touch pre-scanning periods (t 3);

And alternately executing the second display data writing period (t 1) and the third capacitive touch scanning period (t 2) in any frame scanning period of the first driving time sequence, alternately executing the second display data writing period (t 1) and the electromagnetic touch pre-scanning period (t 3) after the third capacitive touch scanning period (t 2) is completed, and continuously alternately executing the second display data writing period (t 1) and the third capacitive touch scanning period (t 2) after the electromagnetic touch pre-scanning period (t 3) is completed.

9. The driving method of the touch display module according to claim 1, further comprising:

Confirming that the target program of the touch display module is not operated, and executing the second driving time sequence from the next frame scanning period if the electromagnetic induction signal is identified in the current frame scanning period;

and confirming that the target program of the touch display module is operated, and executing the first driving time sequence from the next frame scanning period if the electromagnetic induction signal is identified in the current frame scanning period.

10. A touch display module, comprising a touch display panel and a processor, wherein the processor drives the touch display panel by using the driving method of the touch display module according to any one of claims 1 to 9.