Display module, driving method and display device

Abstract

The invention provides a display module, a driving method and a display device, multiple rows of pixel circuits in the display module are used for driving corresponding light-emitting structures to emit light, the pixel circuits have a first driving period, and the pixel circuits stop driving the light-emitting structures to emit light in the first driving period; the touch electrode is arranged on the side, away from the pixel circuit, of the light-emitting structure. The display module is provided with a black insertion area, pixel circuits located in the black insertion area are all located in a first driving period, the multiple rows of touch electrodes comprise the Nth row of touch electrodes located in the black insertion area, and N is a positive integer; the touch driving circuit is used for driving the Nth row of touch electrodes located in the black insertion area so as to enable the Nth row of touch electrodes to perform touch detection; according to the display module, by driving the Nth row of touch electrodes located in the black insertion area, mutual interference between touch signals on the Nth row of touch electrodes and display signals in the pixel circuit can be reduced, and then display abnormity of the display module can be reduced.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and in particular relates to a display module and a driving method, and a display device. Background Art

[0002] Active-matrix organic light emitting diode (AMOLED) and flat panel display devices based on light emitting diode (LED) technologies have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display devices.

[0003] However, the performance of current display products needs to be improved. Summary of the invention

[0004] The purpose of the present application is to provide a display module, a driving method and a display device, aiming to solve the problem of low performance of display products in traditional technologies.

[0005] A first aspect of an embodiment of the present application provides a display module, the display module comprising:

[0006] Light-emitting structure;

[0007] A plurality of rows of pixel circuits, used for driving the corresponding light emitting structures to emit light, wherein the pixel circuits have a first driving period, and during the first driving period, the pixel circuits stop driving the light emitting structures to emit light;

[0008] A plurality of rows of touch electrodes, wherein the touch electrodes are arranged on a side of the light-emitting structure away from the pixel circuit; the display module has a black insertion area, and the pixel circuits located in the black insertion area are all in the first driving period, and the plurality of rows of touch electrodes include an Nth row of touch electrodes located in the black insertion area, where N is a positive integer;

[0009] The touch driving circuit is used to drive the Nth row of touch electrodes located in the black insertion area, so that the Nth row of touch electrodes performs touch detection.

[0010] In some embodiments of the present application, the plurality of rows of touch electrodes further include an N+1th row of touch electrodes located in the black insertion area;

[0011] The display module further includes a first signal output circuit, which is used for outputting a first signal to the N+1th row of touch electrodes in the black insertion area when the touch driving circuit drives the Nth row of touch electrodes in the black insertion area.

[0012] In some embodiments of the present application, a waveform of the first signal output to the touch electrodes in the N+1th row of the black insertion area is the same as a waveform of the driving signal output to the touch electrodes in the Nth row of the black insertion area.

[0013] In some embodiments of the present application, the display module further includes a touch receiving circuit, which is used to collect a collection signal output by the Nth row of touch electrodes in the black insertion area when the Nth row of touch electrodes in the black insertion area receives the driving signal.

[0014] In some embodiments of the present application, the multiple rows of touch electrodes include the N-1th row of touch electrodes and the Nth row of touch electrodes located in the black insertion area, and N≥2; the first signal output circuit is also used to output a first signal to the N-1th row of touch electrodes in the black insertion area when the touch driving circuit drives the Nth row of touch electrodes in the black insertion area; the waveform of the first signal output to the N-1th row of touch electrodes in the black insertion area is the same as the waveform of the driving signal output to the Nth row of touch electrodes in the black insertion area.

[0015] In some embodiments of the present application, a light-emitting control signal line is further included for transmitting a light-emitting control signal to the pixel circuit. The first driving period is a black insertion period. When the pixel circuit is in the black insertion period, the light-emitting control signal connected to the pixel circuit is at an invalid level.

[0016] In a second aspect, the present application further provides a method for driving a display module, the method being applied to the display module as described above, the method comprising:

[0017] In the first driving period, the pixel circuit located in the black insertion area stops driving the corresponding light-emitting structure to emit light;

[0018] The touch driving circuit drives the Nth row of touch electrodes located in the black insertion area, so that the Nth row of touch electrodes performs touch detection.

[0019] In some embodiments of the present application, the touch driving circuit drives the Nth row of touch electrodes located in the black insertion area so that the Nth row of touch electrodes performs touch detection, including:

[0020] A first signal is output to the N+1th row of touch electrodes in the black insertion area, and a waveform of the first signal output to the N+1th row of touch electrodes in the black insertion area is the same as a waveform of a driving signal output by the touch driving circuit to the Nth row of touch electrodes in the black insertion area.

[0021] In some embodiments of the present application, the plurality of rows of touch electrodes include an N-1th row of touch electrodes and an Nth row of touch electrodes located in the black insertion area, and N≥2; the touch driving circuit drives the Nth row of touch electrodes in the black insertion area so that the Nth row of touch electrodes performs touch detection, and further includes:

[0022] A first signal is output to the N-1th row of touch electrodes in the black insertion area, and a waveform of the first signal output to the N-1th row of touch electrodes in the black insertion area is the same as a waveform of a driving signal output by the touch driving circuit to the Nth row of touch electrodes in the black insertion area.

[0023] A third aspect of the present application also provides a display device, comprising the above-mentioned display module.

[0024] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: in the above-mentioned display module, driving method and display device, the display module includes a light-emitting structure, multiple rows of pixel circuits, multiple rows of touch electrodes and a touch driving circuit; the multiple rows of pixel circuits are used to drive the corresponding light-emitting structure to emit light, and the pixel circuit has a first driving period, and the pixel circuit stops driving the light-emitting structure to emit light in the first driving period; the touch electrode is arranged on a side of the light-emitting structure away from the pixel circuit; the display module has a black insertion area, and the pixel circuits located in the black insertion area are all in the first driving period, and the multiple rows of touch electrodes include the Nth row of touch electrodes located in the black insertion area, where N is a positive integer; the touch driving circuit is used to drive the Nth row of touch electrodes located in the black insertion area, so that the Nth row of touch electrodes performs touch detection; in the present application, by driving the Nth row of touch electrodes located in the black insertion area, it is beneficial to reduce the mutual interference between the touch signal on the Nth row of touch electrodes and the display driving signal in the pixel circuit, thereby helping to reduce the display abnormality of the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the frame structure of a display module provided in one embodiment of the present application;

[0026] Figure 2 A schematic diagram of the structure of a pixel circuit provided in an embodiment of the present application;

[0027] Figure 3 A signal timing diagram of a pixel circuit provided in one embodiment of the present application;

[0028] Figure 4 A schematic diagram of the frame structure of a display module provided in one embodiment of the present application;

[0029] Figure 5 A schematic diagram of the frame structure of a display module provided in another embodiment of the present application;

[0030] Figure 6A schematic diagram of the frame structure of a display module provided in yet another embodiment of the present application;

[0031] Figure 7 A schematic diagram of the steps of a driving method provided in an embodiment of the present application;

[0032] Figure 8 A schematic diagram of the blacklisted area coverage area provided in one embodiment of the present application.

[0033] Explanation of specific element symbols: 10-black area insertion, 100-pixel circuit, 200-light-emitting structure, 300-touch driving circuit, 400-touch electrode, 410-Nth row of touch electrodes, 420-N+1th row of touch electrodes, 430-N-1th row of touch electrodes, 500-first signal output circuit, 600-touch receiving circuit, EM-light-emitting control signal, ELVDD-first power line, ELVSS-second power line. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0036] It should be understood that the terms "length", "width", "up", "down", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] It is important to know that the traditional flexible screen touch solution mainly adopts the On-cell (external embedded touch) touch screen structure, which uses the mutual capacitance principle to realize the touch function, and its touch electrodes are usually made above the thin film packaging layer. The current In-cell (built-in touch) touch structure has gradually attracted widespread attention because it can significantly reduce the process cost. The In-cell touch structure makes the touch layer inside the thin film packaging layer, thereby avoiding the use of a separate touch layer mask, which is conducive to reducing manufacturing costs.

[0039] However, in the In-cell touch structure, since the touch electrode is made inside the thin film encapsulation layer, the distance between the touch electrode and the pixel is very close, which leads to a significant increase in the parasitic capacitance formed between the touch electrode and the pixel. The increase in parasitic capacitance not only reduces the strength of the finger touch signal, but also makes the detection of the touch signal more difficult. And the drive of the touch electrode is prone to interfere with the display signal. In the traditional solution where the touch and display are driven independently, the drive signal of the touch electrode may interfere with the display signal. For example, when the touch structure and the light-emitting structure work at the same time, there will be mutual interference between the touch signal and the display signal. The interference of the touch signal on the display signal will cause the display module to have display abnormalities, such as horizontal stripes, flickering and other phenomena, which seriously affects the user's visual experience.

[0040] Based on this, the present application improves the relevant display module, driving method and display device.

[0041] See also Figure 1 , Figure 1 The schematic diagram of the frame structure of the display module provided by the present embodiment is shown. The display module of the present embodiment includes a light-emitting structure 200, a plurality of rows of pixel circuits 100, a plurality of rows of touch electrodes 400 and a touch driving circuit 300; the plurality of rows of pixel circuits 100 are used to drive the corresponding light-emitting structure 200 to emit light, and the pixel circuit 100 has a first driving period, and in the first driving period, the pixel circuit 100 stops driving the light-emitting structure 200 to emit light; the touch electrode 400 is arranged on a side of the light-emitting structure 200 away from the pixel circuit 100; the display module has a black insertion area 10, and the pixel circuits 100 located in the black insertion area 10 are all in the first driving period, and the plurality of rows of touch electrodes 400 include an Nth row of touch electrodes 410 located in the black insertion area 10, where N is a positive integer; the touch driving circuit 300 is used to drive the Nth row of touch electrodes 410 located in the black insertion area 10, so that the Nth row of touch electrodes 410 performs touch detection.

[0042] It should be explained that the light emitting structure 200 is a structure used to generate and display an image in a display module, and the light emitting structure 200 generally includes a plurality of pixel rows. The pixel circuit 100 is responsible for driving the light emitting structure 200 to emit light to present the desired image, and a plurality of pixel circuits 100 correspond to a plurality of pixel rows. The driving cycle of the pixel circuit 100 has a first driving period, during which the pixel circuit 100 stops driving the light emitting structure 200 to emit light, that is, the light emitting structure 200 does not display an image.

[0043] For example, see Figure 2 and Figure 3 , Figure 2 FIG. 1 shows a schematic structural diagram of a pixel circuit 100 provided in this embodiment. Figure 3 1 shows a signal timing diagram of the pixel circuit 100 provided in this embodiment. Figure 2 and Figure 3 As shown, the pixel circuit 100 is a 7T1C driving circuit as an example, and the pixel circuit 100 includes at least three driving periods, namely, a reset phase, a compensation phase, and a light-emitting phase. The EM (Emission Mask) signal is turned off in the reset phase and the compensation phase, and the light-emitting structure 200 is stopped from driving and does not emit light; the EM signal is turned on in the light-emitting phase, and the light-emitting structure 200 emits light. Exemplarily, the first driving period may be the reset phase and / or the compensation phase.

[0044] The touch electrode 400 is usually located above or below the display module to detect the user's touch operation. The touch drive circuit 300 is responsible for driving (activating) the touch electrode 400 to detect touch events and generate corresponding touch signals. The black insertion area 10 refers to the area on the display module where the pixel circuit 100 is in the first driving period. It should be noted that as the multiple pixel circuits 100 scroll and drive multiple pixel rows, the position of the black insertion area 10 also changes. Multiple rows of touch electrodes 400 refer to multiple rows of touch electrodes 400 on the display module, and the multiple rows of touch electrodes 400 include some rows of touch electrodes 400 located in the black insertion area 10 and some rows of touch electrodes 400 located outside the black insertion area 10. The Nth row of touch electrodes 410 refers to the Nth row of touch electrodes 410 among the partial rows of touch electrodes 400 located in the black insertion area 10.

[0045] It is understandable that when the pixel circuit 100 is in the first driving period, the light-emitting structure 200 does not emit light. That is, the pixel circuit 100 does not generate a display driving signal for driving the light-emitting structure 200 to emit light. By driving the touch electrode 400 during the period when the light-emitting structure 200 does not emit light, the mutual interference between the touch signal and the display driving signal can be reduced. This is because when the light-emitting structure 200 emits light, coupling interference is generated between its display driving signal and the touch signal. Specifically, the display driving signal may interfere with the touch signal to affect the response of the display module to the touch action, and the touch signal may also interfere with the display driving signal to affect the normal display of the display module.

[0046] The touch signal and the display drive signal in the current display module 1000 interfere with each other, resulting in horizontal stripes on the display module. However, in the present application, by driving the Nth row of touch electrodes 410 located in the black insertion area 10, the mutual interference between the touch signal and the display drive signal on the Nth row of touch electrodes 410 is reduced, which is conducive to reducing display abnormalities of the display panel, and further helps to improve the overall performance of the display module, such as improving image quality (reducing horizontal stripes) and increasing touch response speed.

[0047] In some embodiments of this application, please refer to Figure 4 , Figure 4 The schematic diagram of the frame structure of the display module provided by the present embodiment is shown. The multi-row touch electrodes 400 of the present embodiment further include the N+1th row touch electrodes 420 located in the black insertion area 10; the display module further includes a first signal output circuit 500, and the first signal output circuit 500 is used to output a first signal to the N+1th row touch electrodes 420 of the black insertion area 10 when the touch driving circuit 300 drives the Nth row touch electrodes 410 of the black insertion area 10; at least part of the waveform of the first signal output to the N+1th row touch electrodes 410 of the black insertion area 10 is the same as at least part of the waveform of the driving signal output to the Nth row touch electrodes 410 of the black insertion area 10.

[0048] It should be explained that at least part of the waveform of the first signal and at least part of the waveform of the driving signal are the same, which may mean that at least part of the waveforms of the two signals are in phase, and at least part of the waveforms of the two signals have the same amplitude. The first signal and the driving signal may have the same waveform in part or in whole.

[0049] It can be understood that when the Nth row of touch electrodes 410 in the black insertion area 10 is driven, the Nth row of touch electrodes 410 in the black insertion area 10 will receive a driving signal (activation signal), and the Nth row of touch electrodes 410 in the black insertion area 10 outputs a collection signal according to the driving signal and the received user touch signal (capacitive signal, resistance signal, etc.), and the touch situation is obtained by processing and analyzing the collection signal. In the embodiment of the present application, when the driving signal is output to the Nth row of touch electrodes 410 in the black insertion area 10, the first signal output circuit 500 also outputs a first signal having at least a partial waveform identical to the driving signal to the N+1th row of touch electrodes 420, so as to reduce the voltage difference between the Nth row of touch electrodes 410 and the N+1th row of touch electrodes 420 at some moments, which is beneficial to reduce the coupling interference of the N+1th row of touch electrodes 420 to the Nth row of touch electrodes 410, and further beneficial to improve the accuracy of the driving signal on the Nth row of touch electrodes 410 in the black insertion area 10.

[0050] Specifically, for a capacitive touch screen, the touch electrode 400 can form a touch detection capacitor, and the touch detection capacitor will change after the user touches the screen, and the touch detection is realized by detecting the change value. The driving signal output by the touch driving circuit 300 is used to charge the touch detection capacitor, and the discharge process of the touch detection capacitor can be detected to determine whether the touch detection capacitor is affected by the touch signal. In the embodiment of the present application, when scanning the Nth row of touch electrodes 410 in the black insertion area 10, a driving signal is output to the Nth row of touch electrodes 410, and the collection signal (signal formed by the discharge process) fed back by the Nth row of touch electrodes 410 is obtained, thereby completing the scanning of the Nth row of touch electrodes 410. At the same time, the first signal is output to the N+1th row of touch electrodes 420, but the collection signal fed back by the N+1th row of touch electrodes 420 is not obtained, thereby realizing the driving of the Nth row of touch electrodes 410, and not driving the N+1th row of touch electrodes 420.

[0051] In some embodiments, the first signal circuit and the touch driving circuit 300 are both provided on a touch driving chip, and the first signal circuit and the touch driving circuit 300 are connected to the touch electrodes 400 through different pins. It is understandable that the touch driving chip can realize signal acquisition only for the Nth row of touch electrodes 410 that output driving signals.

[0052] In some embodiments of the present application, the waveform of the first signal output to the touch electrodes 420 in the N+1th row of the black insertion area 10 is the same as the waveform of the driving signal output to the touch electrodes 410 in the Nth row of the black insertion area 10. It can be understood that the waveform of the first signal and the waveform of the driving signal are exactly the same, that is, the voltages of the first signal and the driving signal at each moment are exactly the same, which is conducive to further improving the accuracy of the driving signal.

[0053] In some embodiments of this application, please refer to Figure 5 , Figure 5 The display module of this embodiment further includes a touch receiving circuit 600, which is used to collect the collection signal output by the Nth row of touch electrodes 410 in the black insertion area 10 when the Nth row of touch electrodes 410 in the black insertion area 10 receives the driving signal.

[0054] It can be understood that the touch receiving circuit 600 collects the collection signal of the driven N-th row of touch electrodes 410, and can realize the scanning of the N-th row of touch electrodes 410. And by setting the touch receiving circuit 600 to collect only the N-th row of touch electrodes 410 when the N-th row of touch electrodes 410 receives the driving signal, the scanning of the N-th row of touch electrodes 410 can be realized, and other rows (such as N+1 row) are not scanned.

[0055] In some embodiments, the touch receiving circuit 600 is also disposed on the driving chip, and receives the acquisition signal through other pins different from the driving signal output pins.

[0056] In some embodiments of this application, please refer to Figure 6 , Figure 6 The schematic diagram of the frame structure of the display module provided by the present embodiment is shown. The multi-row touch electrodes 400 of the present embodiment include the N-1th row touch electrodes 430 and the Nth row touch electrodes 410 located in the black insertion area 10, and N≥2; the first signal output circuit 500 is also used to output the first signal to the N-1th row touch electrodes 430 of the black insertion area 10 when the touch driving circuit 300 drives the Nth row touch electrodes 410 of the black insertion area 10; the waveform of the first signal output to the N-1th row touch electrodes 430 of the black insertion area 10 is the same as the waveform of the driving signal output to the Nth row touch electrodes 410 of the black insertion area 10.

[0057] It can be understood that when the Nth row of touch electrodes 410 is driven, the Nth row of touch electrodes 410 will receive a driving signal (activation signal), and the Nth row of touch electrodes 410 outputs a collection signal according to the driving signal and the received user touch signal (capacitive signal, resistance signal, etc.), and processes and analyzes the collection signal to obtain the touch situation. In the embodiment of the present application, when the driving signal is output to the Nth row of touch electrodes 410, the first signal output circuit 500 also outputs the first signal having the same waveform as the driving signal to the N-1th row of touch electrodes 430 and the N+1th row of touch electrodes 420, so as to reduce the voltage difference between the Nth row of touch electrodes 410 and the N-1th row of touch electrodes 430 and the N+1th row of touch electrodes 420, which is beneficial to reduce the coupling interference of the N-1th row of touch electrodes 430 and the N+1th row of touch electrodes 420 to the Nth row of touch electrodes 410, thereby facilitating the improvement of the accuracy of the driving signal on the Nth row of touch electrodes 410.

[0058] In some embodiments of this application, please continue to refer to Figure 2 and Figure 3 The display module of this embodiment also includes a light emitting control signal EM line for transmitting the light emitting control signal EM to the pixel circuit 100. The first driving period is a black insertion period. When the pixel circuit 100 is in the black insertion period, the light emitting control signal EM connected to the pixel circuit 100 is at an invalid level.

[0059] It can be understood that, since the light emitting control signal EM connected to the pixel circuit 100 is at an invalid level, at least one of the first power line ELVDD and the second power line ELVSS in the pixel circuit 100 is disconnected from the light emitting diode, and the light emitting diode cannot emit light. Specifically, the first power line ELVDD can be a positive power line, and the second power line ELVSS can be a negative power line.

[0060] In some embodiments, the multiple rows of touch electrodes 400 include an M-th row of touch electrodes 400 disposed outside the black insertion area 10 during a certain period of time, where M is a positive integer different from N; the touch driving circuit 300 does not drive the M-th row of touch electrodes 400, that is, the touch driving circuit 300 does not output a driving signal to the M-th row of touch electrodes 400, and after the black insertion area 10 scrolls to cover the M-th row of touch electrodes 400, the touch driving circuit 300 drives the M-th row of touch electrodes 400 (which is now in the black insertion area 10).

[0061] In some embodiments, the display module may be an OLED display structure or other flexible display structures.

[0062] Further, in order to better implement the display module in any of the above embodiments, based on the above display module, please refer to Figure 7 , Figure 7 The schematic diagram of the steps of the driving method provided in this embodiment is shown; the present application also provides a driving method of a display module, the driving method is applied to the display module as described above, and the driving method includes:

[0063] S100: In the first driving period, the pixel circuit 100 located in the black insertion area 10 stops driving the corresponding light-emitting structure 200 to emit light; specifically, in the first driving period, the pixel circuit 100 does not generate a display driving signal for driving the light-emitting structure 200. At this time, even if other signals interfere with the pixel circuit 100, it will not affect the display of the display module.

[0064] S200: The touch driving circuit 300 drives the Nth row of touch electrodes 410 located in the black insertion area 10, so that the Nth row of touch electrodes 410 performs touch detection. Specifically, driving the touch electrodes 400 in the first driving period when the light-emitting structure 200 does not emit light can reduce the mutual interference between the touch signal on the touch electrode 400 and the display driving signal on the pixel circuit 100.

[0065] It is understandable that the touch signal and the display drive signal in the current display module interfere with each other, resulting in horizontal stripes on the display module. However, in the present application, by driving the touch electrode 400 during the first driving period when the light-emitting structure 200 is stopped, the mutual interference between the touch signal and the display drive signal is reduced, which is conducive to reducing the display abnormality of the display panel, and further helps to improve the overall performance of the display module, such as improving image quality (reducing horizontal stripes) and increasing touch response speed.

[0066] In some embodiments of the present application, step S200 includes:

[0067] S210: Output a first signal to the N+1th row of touch electrodes 420 in the black insertion area 10, wherein a waveform of the first signal output to the N+1th row of touch electrodes 420 in the black insertion area 10 is the same as a waveform of a driving signal output by the touch driving circuit 300 to the Nth row of touch electrodes 410 in the black insertion area 10.

[0068] It can be understood that when outputting the driving signal to the Nth row of touch electrodes 410 of the black area 10, the embodiment of the present application also outputs a first signal with the same waveform as the driving signal to the N+1th row of touch electrodes 420 through the first signal output circuit 500, so as to reduce the voltage difference between the Nth row of touch electrodes 410 and the N+1th row of touch electrodes 420, which is beneficial to reduce the coupling interference of the N+1th row of touch electrodes 420 to the Nth row of touch electrodes 410, and further helps to improve the accuracy of the driving signal on the Nth row of touch electrodes 410.

[0069] In some embodiments of the present application, the multiple rows of touch electrodes 400 of this embodiment include the N-1th row of touch electrodes 430 and the Nth row of touch electrodes 410 located in the black insertion area 10, and N≥2; after step S200, the following is further included:

[0070] S300: Output a first signal to the touch electrode 430 of the N-1th row in the black insertion area 10, wherein a waveform of the first signal output to the touch electrode 430 of the N-1th row in the black insertion area 10 is the same as a waveform of a driving signal output by the touch driving circuit to the touch electrode 410 of the Nth row in the black insertion area 10.

[0071] It can be understood that when outputting the driving signal to the Nth row of touch electrodes 410 of the black area 10, the embodiment of the present application also outputs a first signal having the same waveform as the driving signal to the N-1th row of touch electrodes 430 and the N+1th row of touch electrodes 420 through the first signal output circuit 500, so as to reduce the voltage difference between the N-1th row of touch electrodes 430 and the N+1th row of touch electrodes 420 and the Nth row of touch electrodes 410, which is beneficial to reducing the coupling interference of the N-1th row of touch electrodes 430 and the N+1th row of touch electrodes 420 to the Nth row of touch electrodes 410, and further helps to improve the accuracy of the driving signal on the Nth row of touch electrodes 410.

[0072] In some embodiments of this application, please refer to Figure 8 , Figure 8 FIG. 2 shows a schematic diagram of the blacklisted area coverage area provided by this embodiment. Figure 8 The black area in is the coverage area of ​​the light emitting control signal EM. Taking the display module of this embodiment as a capacitive touch display module as an example, the driving cycle of the display module is:

[0073] In the T0 stage: the light emitting control signal EM in the pixel circuit 100 corresponding to the plurality of pixel rows is pulled high (blackened) to stop driving the plurality of pixel rows to form a blackened area;

[0074] In the T1 stage: the light-emitting control signal EM is blacked out to cover the first row of touch electrodes 400 and the second row of touch electrodes 400 (i.e., the light-emitting control signal EM is blacked out to cover the first row of touch electrodes 400 and the plurality of pixel rows 210 near the second row of touch electrodes 400). At this time, the capacitive signal scanning is performed on the first row of touch electrodes 400, and the second row of touch electrodes 400 are driven at the same time;

[0075] In the T2 stage: the width of the black area covers the first, second and third rows of touch electrodes 400. At this time, the second row of touch electrodes 400 is scanned for capacitance signals (outputting driving signals to the touch electrodes 400 for capacitance charging and obtaining acquisition signals of the capacitance discharge process), and the first signal is input to the first and third rows of electrodes for simultaneous driving, but the acquisition signals of their discharge process are not obtained.

[0076] In the T3 stage: the width of the black area covers the first, second, third and fourth rows of touch electrodes 400. At this time, the third row of touch electrodes 400 is scanned for capacitance signals, and the first signal is input to the second and fourth rows of electrodes for simultaneous driving, but the collection signal of the discharge process is not obtained.

[0077] In the T4 stage: the width of the black area covers the second, third, fourth and fifth rows of touch electrodes 400. At this time, the fourth row of touch electrodes 400 is scanned for capacitance signals, and the first signal is input to the third and fifth rows of electrodes for simultaneous driving, but the collection signal of the discharge process is not obtained.

[0078] It can be understood that, during the scrolling process of the light emitting control signal EM having a width of 4 rows of touch electrodes 400 , the touch electrodes 400 are scanned in sequence, thereby completing the row-by-row driving of the touch electrodes 400 .

[0079] Furthermore, in order to better implement the display module in any of the above embodiments, based on the above display module, the present application also provides a display device including the above display module.

[0080] In some embodiments, the display device may be a mobile phone, a tablet, a desktop computer, a laptop computer, a wearable device, a car screen, a sensor device, etc.

[0081] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0082] The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only for example and does not constitute a limitation of the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements and amendments to the present application. Such modifications, improvements and amendments are suggested in the present application, so such modifications, improvements and amendments still belong to the spirit and scope of the exemplary embodiments of the present application.

[0083] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0084] Similarly, it should be noted that in order to simplify the description of the disclosure of this application and thus help understand one or more embodiments of the invention, in the above description of the embodiments of this application, multiple features are sometimes combined into one embodiment, figure or description thereof. However, this disclosure method does not mean that the features required by the object of this application are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiment disclosed above.

[0085] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A display module, characterized in that: The display module comprises: Light-emitting structure; A plurality of rows of pixel circuits, used for driving the corresponding light emitting structures to emit light, wherein the pixel circuits have a first driving period, and during the first driving period, the pixel circuits stop driving the light emitting structures to emit light; A plurality of rows of touch electrodes, wherein the touch electrodes are arranged on a side of the light-emitting structure away from the pixel circuit; the display module has a black insertion area, and the pixel circuits located in the black insertion area are all in the first driving period, and the plurality of rows of touch electrodes include an Nth row of touch electrodes located in the black insertion area, where N is a positive integer; The touch driving circuit is used to drive the Nth row of touch electrodes located in the black insertion area, so that the Nth row of touch electrodes performs touch detection.

2. The display module according to claim 1, characterized in that: The plurality of rows of touch electrodes further include an N+1th row of touch electrodes located in the black insertion area; The display module further includes a first signal output circuit, which is used for outputting a first signal to the N+1th row of touch electrodes in the black insertion area when the touch driving circuit drives the Nth row of touch electrodes in the black insertion area.

3. The display module according to claim 2, characterized in that: The waveform of the first signal output to the touch electrodes in the N+1th row of the black insertion area is the same as the waveform of the driving signal output to the touch electrodes in the Nth row of the black insertion area.

4. The display module according to claim 2, characterized in that: The display module further includes a touch receiving circuit, which is used for collecting a collection signal output by the Nth row of touch electrodes in the black insertion area when the Nth row of touch electrodes in the black insertion area receives the driving signal.

5. The display module according to claim 2, characterized in that: The multiple rows of touch electrodes include the N-1th row of touch electrodes and the Nth row of touch electrodes located in the black insertion area, and N≥2; the first signal output circuit is also used to output a first signal to the N-1th row of touch electrodes in the black insertion area when the touch driving circuit drives the Nth row of touch electrodes in the black insertion area; the waveform of the first signal output to the N-1th row of touch electrodes in the black insertion area is the same as the waveform of the driving signal output to the Nth row of touch electrodes in the black insertion area.

6. The display module according to any one of claims 1 to 5, characterized in that: It also includes a light-emitting control signal line for transmitting a light-emitting control signal to the pixel circuit. The first driving period is a black insertion period. When the pixel circuit is in the black insertion period, the light-emitting control signal connected to the pixel circuit is at an invalid level.

7. A method for driving a display module, characterized in that: The driving method is applied to the display module according to any one of claims 1 to 6, and the driving method comprises: In the first driving period, the pixel circuit located in the black insertion area stops driving the corresponding light-emitting structure to emit light; The touch driving circuit drives the Nth row of touch electrodes located in the black insertion area, so that the Nth row of touch electrodes performs touch detection.

8. The driving method according to claim 7, characterized in that: The touch driving circuit drives the Nth row of touch electrodes located in the black insertion area so that the Nth row of touch electrodes performs touch detection, including: A first signal is output to the N+1th row of touch electrodes in the black insertion area, and a waveform of the first signal output to the N+1th row of touch electrodes in the black insertion area is the same as a waveform of a driving signal output by the touch driving circuit to the Nth row of touch electrodes in the black insertion area.

9. The driving method according to claim 7, characterized in that: The plurality of rows of touch electrodes include an N-1th row of touch electrodes and an Nth row of touch electrodes located in the black insertion area, and N≥2; the touch driving circuit drives the Nth row of touch electrodes located in the black insertion area so that the Nth row of touch electrodes performs touch detection, and further includes: A first signal is output to the N-1th row of touch electrodes in the black insertion area, and a waveform of the first signal output to the N-1th row of touch electrodes in the black insertion area is the same as a waveform of a driving signal output by the touch driving circuit to the Nth row of touch electrodes in the black insertion area.

10. A display device, characterized in that: A display module comprising any one of claims 1 to 6.

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