Display module, display device, driving method of display module, and pixel circuit

Abstract

SOLUTION: A display module, a display device, a driving method of the display module, and a pixel circuit are disclosed. The display module includes: an array substrate; a light-emitting unit disposed on one side of the array substrate, the light-emitting unit including a first electrode located in a first electrode layer, a second electrode located in a second electrode layer, and a light-emitting portion located in a light-emitting functional layer, where the second electrode is located on a side of the first electrode away from the array substrate, and where the light-emitting portion is located between the second electrode and the first electrode; and a pixel defining layer disposed on one side of the array substrate, the pixel defining layer including a pixel limiting portion and a pixel opening limited by the pixel limiting portion, at least a portion of the first electrode being exposed from the pixel opening, where one of the first electrode and the second electrode is used to access a touch driving signal, and the other of the first electrode and the second electrode is used to output a touch sensing signal.EFFECT: A display module according to the embodiment of the present application has good display performance.SELECTED DRAWING: Figure 2

Description

[Technical field]

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

[0002] Flat display devices based on technologies such as organic light emitting diode (OLED) and light emitting diode (LED) have advantages such as high image quality, power saving, thin body and wide range of applications, and are widely applied to various consumer electronic products such as mobile phones, televisions, notebook computers, and desktop computers, and have become the main display panels in the display field.

[0003] However, there is a need to improve the performance of current OLED display products. Summary of the Invention

[0004] SUMMARY OF THE DISCLOSURE The present disclosure provides a display module, a display device, a driving method for the display module, and a pixel circuit, for the purpose of improving the performance of the display module.

[0005] A display module according to an embodiment of a first aspect of the present application includes an array substrate, a light-emitting unit provided on one side of the array substrate, and a pixel definition layer provided on one side of the array substrate, the light-emitting unit including a first electrode located on a first electrode layer, a second electrode located on a second electrode layer, and a light-emitting portion located on a light-emitting functional layer, the second electrode being located on a side of the first electrode away from the array substrate, and the light-emitting portion being located between the second electrode and the first electrode, the pixel definition layer including a pixel restricting portion and a pixel opening restricted by the pixel restricting portion, and at least a portion of the first electrode being exposed from the pixel opening, wherein one of the first electrode and the second electrode is used for acquiring a touch driving signal, and the other of the first electrode and the second electrode is used for outputting a touch sensing signal.

[0006] According to an embodiment of the first aspect of the present application, at least a portion of the first electrodes and the second electrodes are orthogonally projected on the array substrate such that they are misaligned with each other.

[0007] According to any of the above-described embodiments of the first aspect of the present application, each first electrode includes a first portion exposed from the pixel opening and a second portion located between the pixel restricting portion and the array substrate, and a normal projection of at least a portion of the second portion on the array substrate and a normal projection of the second electrode on the array substrate are misaligned.

[0008] According to any of the above embodiments of the first aspect of the present application, the second portion is located on at least one side of the first portion in the first direction and / or the second direction.

[0009] According to any of the above embodiments of the first aspect of the present application, the display module includes a touch drive signal line and a touch drive transistor connected to a first electrode, the touch drive signal line is used to transmit a touch drive signal to the first electrode via the touch drive transistor, the touch drive transistor includes a first source and a first drain, one of the first source and the first drain is connected to the first electrode, and the other of the first source and the first drain is connected to the touch drive signal line.

[0010] According to any of the above-described embodiments of the first aspect of the present application, the touch drive transistor further includes a first gate, the array substrate includes a first insulating layer, a second insulating layer located on a side of the first insulating layer toward the first electrode layer, and a third insulating layer located on a side of the second insulating layer away from the first insulating layer, the first gate is provided on a side of the first insulating layer away from the second insulating layer, the touch drive signal line is provided between the first insulating layer and the second insulating layer, and the first source and the first drain are provided between the second insulating layer and the third insulating layer.

[0011] According to any of the above-described embodiments of the first aspect of the present application, the first electrodes are spaced apart in a first direction and a second direction, and touch drive transistors corresponding to two first electrodes adjacent to each other in the first direction are connected to the same touch drive signal line.

[0012] According to any of the above-described embodiments of the first aspect of the present application, the number of touch drive signal lines is at least two, the at least two touch drive signal lines are spaced apart in the second direction, and touch drive transistors corresponding to two first electrodes adjacent in the second direction are connected to different touch drive signal lines.

[0013] According to any of the above embodiments of the first aspect of the present application, the light-emitting unit is configured to not emit light when the touch drive transistor connected to the first electrode of the light-emitting unit is turned on.

[0014] According to any of the above embodiments of the first aspect of the present application, the touch drive transistor is configured to be turned off when a light-emitting unit corresponding to a first electrode connected to the touch drive transistor emits light.

[0015] According to any of the above embodiments of the first aspect of the present application, the display module further includes a driving transistor and an emission control transistor, the driving transistor and the emission control transistor are connected between a power supply voltage signal line of the display module and the emission unit, the driving transistor is used to drive the emission unit to emit light, the emission control transistor includes a second source and a second drain, one of the second source and the second drain is connected to the first electrode, and the other of the second source and the second drain is connected to the driving transistor, and the touch drive transistor is configured to be turned on when the emission control transistor is turned off.

[0016] According to any of the above embodiments of the first aspect of the present application, the display module further includes an emission control signal line, the touch drive transistor further includes a first gate, and the emission control transistor further includes a second gate, and the emission control signal line is connected to the first gate and the second gate to transmit an emission control signal to the touch drive transistor and the emission control transistor, where one of the touch drive transistor and the emission control transistor is an N-type transistor and the other is a P-type transistor.

[0017] According to any of the above embodiments of the first aspect of the present application, the display module further includes a touch control module and a touch control line, the touch control module is connected to the touch drive signal line through the touch control line, and the touch control module is used to transmit a touch drive signal to the touch drive transistor through the touch control line and the touch drive signal line.

[0018] According to any of the above embodiments of the first aspect of the present application, the number of the touch control lines is the same as the number of the light emission control signal lines.

[0019] According to any of the above embodiments of the first aspect of the present application, the touch drive signal line is further used to transmit a reset signal to the first electrode through the touch drive transistor, so as to reset the first electrode.

[0020] According to any of the above embodiments of the first aspect of the present application, the at least two second electrodes are shaped spaced apart in a first direction and extending in a second direction, where the first direction and the second direction intersect.

[0021] According to any of the above-described embodiments of the first aspect of the present application, the display module includes a touch sensing signal line connected to the second electrode, and the touch sensing signal line is used to receive a touch sensing signal output from the second electrode.

[0022] According to any of the above embodiments of the first aspect of the present application, when the light-emitting unit emits light, the touch sensing signal line is further used for transmitting a negative power supply voltage signal to the second electrode.

[0023] According to any of the above embodiments of the first aspect of the present application, the display module further includes isolation structures spaced apart in at least two first directions and shaped to extend along a second direction, wherein a material of the isolation structures includes a conductive material, the second electrodes are respectively provided in different pixel openings, and the second electrodes are spaced apart in the first direction and the second direction, and adjacent second electrodes in the second direction are electrically connected to each other via the isolation structures.

[0024] According to any of the above embodiments of the first aspect of the present application, the isolation structure is provided to surround at least a portion of the pixel aperture.

[0025] According to any of the above-described embodiments of the first aspect of the present application, the display module includes a touch sensing signal line electrically connected to the isolation structure, and the touch sensing signal line is used to receive a touch sensing signal output from the second electrode via the isolation structure.

[0026] According to any of the above embodiments of the first aspect of the present application, when the light-emitting unit emits light, the touch sensing signal line is further used to transmit a negative power supply voltage signal to the second electrode.

[0027] According to any of the above embodiments of the first aspect of the present application, the separation structure has a first end and a second end opposite each other in a thickness direction of the display module, the second end being located on a side of the first end away from the array substrate, and an orthogonal projection of the first end on the array substrate being located within an orthogonal projection of the second end on the array substrate.

[0028] According to any of the above embodiments of the first aspect of the present application, in a direction away from the array substrate, the distance between the surfaces of the pixel openings towards either side of the isolation structure gradually increases.

[0029] According to any of the above-described embodiments of the first aspect of the present application, the separation structure includes a first separation portion and a second separation portion located on a side of the first separation portion away from the array substrate, the second separation portion being arranged to protrude from the first separation portion toward the pixel opening, and a positive projection of the first separation portion on the array substrate is located within a positive projection of the second separation portion on the array substrate.

[0030] According to any of the above-described embodiments of the first aspect of the present application, a material of the first separation portion includes a conductive material, and the second electrodes adjacent in the second direction are connected via the first separation portion.

[0031] According to any of the above-described embodiments of the first aspect of the present application, the isolation structure has a lattice shape, and the second electrodes that are partially adjacent in the first direction are connected by the isolation structure.

[0032] According to any of the above-described embodiments of the first aspect of the present application, the isolation structure is provided on a side of the pixel restriction portion away from the array substrate, or an accommodating groove is opened in the pixel restriction portion, and at least a portion of the isolation structure is located within the accommodating groove.

[0033] According to any of the above embodiments of the first aspect of the present application, the display module further includes a touch control module, wherein the touch sensing signal line is connected to the touch control module, and the touch control module is configured to obtain a touch sensing signal fed back from the second electrode via the touch sensing signal line when the light-emitting unit does not emit light.

[0034] According to any of the above embodiments of the first aspect of the present application, the touch control module is configured to transmit a negative power supply voltage signal to the second electrode through the touch sensing signal line when the light emitting unit emits light.

[0035] An embodiment of a second aspect of the present application provides a display device including the display module of any of the above embodiments.

[0036] An embodiment of a third aspect of the present application provides a driving method for the display module of any of the above embodiments, wherein each light-emitting unit has a display cycle, and the display cycle includes at least one light-emitting period and at least one non-light-emitting period, and the driving method includes: inputting a driving current signal to a first electrode of the light-emitting unit during a light-emitting period of the light-emitting unit; In a non-light-emitting period of the light-emitting unit, transmitting a touch driving signal or a reset signal to a first electrode of the light-emitting unit.

[0037] According to an embodiment of the third aspect of the present application, the display period includes at least one non-light-emitting period, and the step of transmitting a touch driving signal or a reset signal to the first electrode of the light-emitting unit in the non-light-emitting period of the light-emitting unit includes: The method further includes transmitting a reset signal to the first electrode of the light-emitting unit in a first non-light-emitting period in a display period of the light-emitting unit.

[0038] According to any of the above-described embodiments of the third aspect of the present application, the step of transmitting a reset signal to the first electrode of the light-emitting unit in the first non-light-emitting period in the display cycle of the light-emitting unit includes: The method further includes sequentially transmitting a reset signal and a touch driving signal to a first electrode of the light-emitting unit during a first non-light-emitting period in a display period of the light-emitting unit.

[0039] According to any of the above embodiments of the third aspect of the present application, the display cycle includes at least two non-light-emitting periods, and the step of transmitting a touch drive signal or a reset signal to the first electrode of the light-emitting unit in the non-light-emitting period of the light-emitting unit includes: The method further includes transmitting a touch driving signal to a first electrode of the light-emitting unit in a non-light-emitting period after a first non-light-emitting period in a display period of the light-emitting unit.

[0040] According to any of the above-described embodiments of the third aspect of the present application, when the light-emitting unit transitions from a non-light-emitting period to a light-emitting period, it transitions from a state of transmitting a reset signal to a first electrode of the light-emitting unit to a state of stopping transmitting the reset signal to the first electrode of the light-emitting unit, or transitions from a state of transmitting a touch drive signal to the first electrode of the light-emitting unit to a state of stopping transmitting the touch drive signal to the first electrode of the light-emitting unit.

[0041] According to any of the above embodiments of the third aspect of the present application, the lowest potential of the reset signal is the same as the lowest potential of the touch drive signal.

[0042] According to any of the above embodiments of the third aspect of the present application, the touch drive signal is a pulse signal.

[0043] An embodiment of a fourth aspect of the present application provides a pixel circuit including a light-emitting unit, a light-emitting control transistor connected to the light-emitting unit, and a touch driving transistor connected to the light-emitting unit, wherein in a light-emitting period, the touch driving transistor is turned off and the light-emitting control transistor is turned on to control the light emission of the light-emitting unit, and in a non-light-emitting period, the light-emitting control transistor is turned off and the touch driving transistor is turned on to transmit a touch driving signal to the light-emitting unit.

[0044] According to an embodiment of the fourth aspect of the present application, the pixel circuit further includes a touch drive signal line, a first end of the touch drive transistor is connected to the touch drive signal line, and a second end of the touch drive transistor is connected to the light-emitting unit, and the touch drive signal line is used to transmit a touch drive signal to the light-emitting unit through the touch drive transistor.

[0045] According to any of the above embodiments of the fourth aspect of the present application, the touch drive signal line is further used to transmit a reset signal to the light-emitting unit through the touch drive transistor.

[0046] According to any of the above embodiments of the fourth aspect of the present application, in the non-light-emitting period, the touch driving transistor is turned on to transmit the touch driving signal or the reset signal to the light-emitting unit.

[0047] According to any of the above embodiments of the fourth aspect of the present application, the pixel circuit further includes an emission control signal line, the emission control signal line is connected to the control end of the emission control transistor and the control end of the touch drive transistor, and the emission control signal line is used to transmit an emission control signal to the emission control transistor and the touch drive transistor.

[0048] According to any of the above-described embodiments of the fourth aspect of the present application, one of the light emission control transistor and the touch drive transistor is an N-type transistor, and the other is a P-type transistor.

[0049] According to any of the above embodiments of the fourth aspect of the present application, the pixel circuit further includes a power supply voltage signal line and a driving transistor, and the light-emitting control transistor includes a first control transistor and a second control transistor, where the light-emitting control signal line is connected to the control ends of the first control transistor and the second control transistor, a first end of the second control transistor is connected to the power supply voltage signal line, a second end of the second control transistor is connected to a first end of the driving transistor, a first end of the first control transistor is connected to a second end of the driving transistor, and a second end of the first control transistor is connected to the light-emitting unit.

[0050] According to any of the above-described embodiments of the fourth aspect of the present application, during the light-emitting period, the first control transistor and the second control transistor are turned on under control of the light-emitting control signal, and the driving transistor supplies a driving current signal to the light-emitting unit via the first control transistor so as to cause the light-emitting unit to emit light.

[0051] In a display module according to an embodiment of the present application, the display module includes an array substrate, a light-emitting unit, and a pixel defining layer, the pixel defining layer includes a pixel restricting portion and a pixel aperture defined by the pixel restricting portion, at least a portion of the light-emitting unit is located within the pixel aperture, and the pixel restricting portion can define a sub-pixel of the display module.

[0052] The light-emitting unit includes a first electrode located on the first electrode layer, a second electrode located on the second electrode layer, and a light-emitting section located on the light-emitting functional layer, where the second electrode is located on the side of the first electrode away from the array substrate, and the light-emitting section is located between the second electrode and the first electrode, and the first electrode, the light-emitting section and the second electrode stacked on each other can be used to realize light-emitting display of the display module.

[0053] When one of the first electrode and the second electrode is used to obtain a touch driving signal and the other of the first electrode and the second electrode is used to output a touch sensing signal, the first electrode and the second electrode can be involved in the light-emitting display of the display module as pixel electrodes of the display module, and the first electrode and the second electrode can be multiplexed as touch electrodes of the display module to realize the touch function of the display module, thereby eliminating the need to install a touch electrode by providing an extra layer structure in the display module, thereby improving the performance of the display module and, for example, reducing the thickness of the display module. [Brief description of the drawings]

[0054] In order to more clearly describe the technical solutions of the embodiments of the present application, the drawings required in the embodiments of the present application are briefly described below, and obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without any creative efforts. [Figure 1] FIG. 2 is a schematic diagram showing a partial structure of a pixel definition layer according to an embodiment of the present application. [Diagram 2] FIG. 2 is a partial cross-sectional view of a display module according to an embodiment of the present application. [Diagram 3] 1 is a schematic diagram of a partial structure of a display module according to an embodiment of the present application; [Figure 4] FIG. 2 is a partial structural schematic diagram of a display module according to another embodiment of the present application. [Diagram 5] FIG. 2 is a schematic diagram of a partial structure of a display module according to another embodiment of the present application. [Figure 6] FIG. 2 is a partial cross-sectional view of a display module according to another embodiment of the present application. [Figure 7] FIG. 13 is a partial structural schematic diagram of a display module according to a further embodiment of the present application; [Figure 8] FIG. 2 is a partial cross-sectional view of a display module according to another embodiment of the present application. [Figure 9] FIG. 2 is a partial cross-sectional view of a display module according to another embodiment of the present application. [Figure 10] FIG. 13 is a partial cross-sectional view of a display module according to yet another embodiment of the present application. [Figure 11] FIG. 13 is a partial cross-sectional view of a display module according to yet another embodiment of the present application. [Figure 12] 2 is a flowchart of a driving method for a display module according to an embodiment of the present application. [Figure 13] FIG. 2 is a schematic sequence diagram of a driving method for a display module according to an embodiment of the present application. [Figure 14] FIG. 11 is a schematic sequence diagram of a driving method for a display module according to another embodiment of the present application. [Figure 15] 1 is a schematic structural diagram of a pixel circuit according to an embodiment of the present application; [Figure 16] FIG. 2 is a schematic structural diagram of a pixel circuit according to another embodiment of the present application. [Figure 17] FIG. 2 is a schematic structural diagram of a pixel circuit according to another embodiment of the present application. [Explanation of symbols]

[0055] 10 display module, 10a touch control module, 10b touch control line, 100 array substrate, 110 base, 120 first insulating layer, 130 second insulating layer, 140 third insulating layer; 150 fourth insulating layer, 160 source-drain conductive portion, 200 first electrode layer, 210 first electrode, 211 first portion, 212 second portion, 310 isolation structure, 310a first end, 310b second end, 311 first isolation portion, 312 second isolation portion, 320 pixel definition layer, 321 pixel restriction portion, 321a receiving groove, 322 pixel opening, 400 light-emitting functional layer, 410 light-emitting part, 500 second electrode layer, 510 second electrode, 610 touch drive transistor, 611 first gate, 612 first source, 613 first drain, 614 first active layer, 620 touch drive signal line, 700 touch sensing signal line, 800 light emission control transistor, 810 second gate, 820 second source, 830 second drain, 840 second active layer, 900 Drive transistor, VDD Power supply voltage signal line, EM light emission control signal line, EL light emitting unit, VDATA data signal end, VREF initialization signal end, S1: the first scanning signal end; S2 the second scanning signal end; T1: first control transistor; T2: second control transistor; P1 memory module, C1 first capacitor, P2 data write module, T3 data write transistor, P3 compensation module, T4 compensation transistor, T4a first sub-transistor, T4b second sub-transistor; P4 initialization module, T5 initialization transistor, T5a third sub-transistor, T5b fourth sub-transistor; X thickness direction, Y first direction, Z The secondary direction. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0056] In the following, the characteristics and exemplary embodiments of the present application will be described in detail, and in order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be described in more detail with reference to the drawings and specific embodiments. It should be understood that the specific embodiments described herein are for the purpose of interpreting the present application, and do not limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is merely for the purpose of providing an example of the present application to better understand the present application.

[0057] It should be noted that, in this specification, relational terms such as first and second, etc., are merely intended to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any actual relationship or order between these entities or operations. Furthermore, the terms "comprise," "have," "comprises," or any other variation thereof are intended to cover a non-exclusive inclusion, whereby a process, method, article, or device that includes a set of elements includes not only those elements, but also other elements not expressly listed, or further includes elements inherent to such process, method, article, or device. Absent more limitations, an element qualified by the phrase "comprises," "has," "comprises," does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0058] In describing the structure of a part, when one layer or region is referred to as being "on" or "above" another layer or region, it should be understood that this refers to being directly on top of the other layer or region, or that it also includes other layers or regions between the other layer or region, and that when the part is inverted, the one layer or region would be "under" or "beneath" the other layer or region.

[0059] Flat display devices based on organic light emitting diodes and light emitting diodes have the advantages of high image quality, low power consumption, thin body, and wide range of applications, and are widely used in various consumer electronic products such as mobile phones, televisions, notebook computers, and desktop computers, and have become the main display panels in the display field. However, the performance of current OLED display products needs to be improved.

[0060] In order to solve the above problems, the embodiments of the present application provide a display module, a display device, a driving method for the display module, and a pixel circuit. Hereinafter, each embodiment of the display module, the display device, the driving method for the display module, and the pixel circuit will be described with reference to the drawings.

[0061] FIG. 1 is a schematic diagram of a partial structure of a pixel definition layer 320 according to an embodiment of the present application, and FIG. 2 is a partial cross-sectional view of a display module 10 according to an embodiment of the present application, in which the X direction in the figure is the thickness direction of the display module 10, the Y direction in the figure is the first direction, and the Z direction in the figure is the second direction, where the first direction Y, the second direction Z, and the thickness direction X intersect two by two.

[0062] In order to clearly show the structure of the display module 10, the touch driving transistor 610 and the light emission control transistor 800 connected to a portion of the first electrode 210 are not shown in the relevant partial cross-sectional views of the display module 10, that is, only some of the touch driving transistors 610 and the light emission control transistors 800 are shown, so the relevant drawings are not limited to the actual number and actual arrangement shape of the touch driving transistors 610 and the light emission control transistors 800 in an actual product.

[0063] The embodiment of the present application provides a display module 10, which may be an Organic Light Emitting Diode (OLED) display module 10.

[0064] As shown in FIG. 1 and FIG. 2 , a display module 10 according to an embodiment of the first aspect of the present application includes an array substrate 100, a light-emitting unit EL provided on one side of the array substrate 100, and a pixel definition layer 320 provided on one side of the array substrate 100. The light-emitting unit EL includes a first electrode 210 located on a first electrode layer 200, a second electrode 510 located on a second electrode layer 500, and a light-emitting portion 410 located on a light-emitting functional layer 400. The second electrode 510 is an array substrate of the first electrode 210. The touch panel is located on the side away from the plate 100, and the light-emitting portion 410 is located between the second electrode 510 and the first electrode 210, and the pixel definition layer 320 includes a pixel restricting portion 321 and a pixel opening 322 restricted by the pixel restricting portion 321, and at least a portion of the first electrode 210 is exposed from the pixel opening 322, where one of the first electrode 210 and the second electrode 510 is used to receive a touch driving signal, and the other of the first electrode 210 and the second electrode 510 is used to output a touch sensing signal.

[0065] In the display module 10 according to the embodiment of the present application, the display module 10 includes an array substrate 100, a light-emitting unit EL, and a pixel defining layer 320. The pixel defining layer 320 includes a pixel restricting portion 321 and a pixel opening 322 restricted by the pixel restricting portion 321, at least a part of the light-emitting unit EL can be located within the pixel opening 322, and the pixel restricting portion 321 can be used to define a sub-pixel of the display module 10.

[0066] The light-emitting unit EL includes a first electrode 210 located on the first electrode layer 200, a second electrode 510 located on the second electrode layer 500, and a light-emitting section 410 located on the light-emitting functional layer 400, where the second electrode 510 is located on the side of the first electrode 210 away from the array substrate 100, and the light-emitting section 410 is located between the second electrode 510 and the first electrode 210, and the first electrode 210, the light-emitting section 410 and the second electrode 510 stacked on each other can be used to realize light-emitting display of the display module 10.

[0067] When one of the first electrode 210 and the second electrode 510 is used to receive a touch driving signal, and the other of the first electrode 210 and the second electrode 510 is used to output a touch sensing signal, the first electrode 210 and the second electrode 510 can be used as pixel electrodes of the display module 10 to participate in the light-emitting display of the display module 10, and the first electrode 210 and the second electrode 510 can be multiplexed as touch electrodes of the display module 10 to realize the touch function of the display module 10, thereby eliminating the need to provide a touch electrode by providing an extra layer structure in the display module 10, and thus reducing the thickness of the display module 10.

[0068] In some embodiments of the present application, the light emitting portion 410 may include a hole injection layer (HIL), a hole transport layer (HTL), a light emitting structure, an electron injection layer (EIL), and an electron transport layer (ETL).

[0069] Optionally, the number of the first electrodes 210 and the second electrodes 510 may be at least two, with adjacent first electrodes 210 spaced apart and adjacent second electrodes 510 spaced apart, which facilitates realizing the touch function of the display module 10.

[0070] The first electrode 210 and the second electrode 510 are involved in the light emission display of the display module 10 as pixel electrodes of the display module 10, where one of the first electrode 210 and the second electrode 510 serves as an anode and the other serves as a cathode to drive the light emitting unit 410 to emit light. In the embodiment of the present application, an example will be described in which the first electrode 210 serves as the anode of the display module 10 and the second electrode 510 serves as the cathode of the display module 10.

[0071] 1, optionally, the pixel restricting portion 321 may be in a lattice shape, and the openwork areas in the lattice-shaped pixel restricting portion 321 may be pixel openings 322. Optionally, some of the pixel restricting portions 321 may be formed to extend along a first direction Y, and some of the pixel restricting portions 321 may be formed to extend along a second direction Z, so that the pixel restricting portions 321 may cross each other to form a lattice shape.

[0072] Here, there are multiple types of sizes and arrangement shapes of each pixel opening 322. Optionally, the size and arrangement shape of each pixel opening 322 can be set according to the emission color of the light-emitting portion 410 in the pixel opening 322, and optionally, the size and arrangement shape of each pixel opening 322 can be set according to the needs of the pixel array density of the display module 10.

[0073] In some embodiments of the present application, the display module 10 may be a display module 10 that realizes touch positioning based on mutual capacitance touch architecture, that is, when the first electrode 210 and the second electrode 510 are used as touch electrodes of the display module 10, one of the first electrode 210 and the second electrode 510 is a touch driving electrode for excitation, and the other is a touch sensing electrode for detection, and a capacitance is formed between the first electrode 210 and the second electrode 510. A user can press, touch or approach a certain position of the display module 10 to change the capacitance between the first electrode 210 and the second electrode 510 at the position, and identification and positioning can be performed through the capacitance change, thereby realizing the touch function of the display module 10.

[0074] For example, the user can press a certain position on the display module 10 to decrease the distance between the first electrode 210 and the second electrode 510, thereby increasing the capacitance between the first electrode 210 and the second electrode 510 at that position. Also, for example, the user can touch or bring a conductor close to a certain position on the display module 10, so that the conductor affects the sensing capacitance between the first electrode 210 and the second electrode 510, thereby decreasing the sensing capacitance between the first electrode 210 and the second electrode 510 at that position.

[0075] For convenience of explanation, the following embodiments will be described taking the example that "the first electrode 210 is a touch driving electrode of the display module 10, and the second electrode 510 is a touch sensing electrode of the display module 10".

[0076] As shown in FIG. 2, in some alternative embodiments, the orthogonal projections of at least some of the first electrodes 210 on the array substrate 100 and the orthogonal projections of the second electrodes 510 on the array substrate 100 are misaligned.

[0077] By providing a misalignment between the orthogonal projection of at least a part of the first electrodes 210 on the array substrate 100 and the orthogonal projection of the second electrodes 510 on the array substrate 100, at least a part of the first electrodes 210 are not shielded and covered by the second electrodes 510 in the thickness direction X of the display module 10, and when the first electrodes 210 and the second electrodes 510 function as touch electrodes, the misaligned portion between the first electrodes 210 and the second electrodes 510 can form a sensing capacitance, so that when a conductor is close to the first electrodes 210 and the second electrodes 510, the sensing capacitance between the first electrodes 210 and the second electrodes 510 can be changed. For example, when a user's finger approaches the first electrodes 210 and the second electrodes 510, the sensing capacitance between the first electrodes 210 and the second electrodes 510 decreases.

[0078] In some embodiments of the present application, there are several ways in which the orthogonal projections of at least some of the first electrodes 210 on the array substrate 100 and the orthogonal projections of the second electrodes 510 on the array substrate 100 are misaligned.

[0079] As shown in FIG. 2, in some optional embodiments, each first electrode 210 includes a first portion 211 exposed from the pixel opening 322 and a second portion 212 located between the pixel restricting portion 321 and the array substrate 100, and the orthogonal projection of at least a portion of the second portion 212 on the array substrate 100 and the orthogonal projection of the second electrode 510 on the array substrate 100 are misaligned.

[0080] Optionally, the second portion 212 is located on at least one side of the first portion 211 in the first direction Y and / or the second direction Z.

[0081] In these optional embodiments, by arranging the orthogonal projection of at least a portion of the second portion 212 on the array substrate 100 in an offset position with the orthogonal projection of the second electrode 510 on the array substrate 100, the first electrode 210 can have a large arrangement area, facilitating the orthogonal projection of the first electrode 210 on the array substrate 100 and the orthogonal projection of the second electrode 510 on the array substrate 100 to be offset from each other, the second portion 212 can be used to form a sensing capacitance with the second electrode 510, and the first portion 211 below the light-emitting portion 410 can be used to participate in the light-emitting display of the display module 10.

[0082] Moreover, the second portion 212 located below the pixel restricting portion 321 can also be used to increase the height of the pixel restricting portion 321 so as to improve the effect of dividing the sub-pixels of the display module 10 by the pixel restricting portion 321. Moreover, the pixel restricting portion 321 does not need to be too high, and can satisfactorily divide the sub-pixels of the display module 10, so that the thickness of the display module 10 can be reduced.

[0083] FIG. 3 is a schematic diagram showing a partial structure of a display module 10 according to an embodiment of the present application.

[0084] As shown in Figures 2 and 3, in some optional embodiments, the display module 10 includes a touch drive transistor 610 connected to a touch drive signal line 620 and a first electrode 210, where the touch drive signal line 620 is used to transmit a touch drive signal to the first electrode 210 through the touch drive transistor 610, and the touch drive transistor 610 includes a first source 612 and a first drain 613, one of the first source 612 and the first drain 613 is connected to the first electrode 210, and the other of the first source 612 and the first drain 613 is connected to the touch drive signal line 620.

[0085] When the touch driving transistor 610 is turned on, that is, when the first source 612 and the first drain 613 are turned on, the touch driving signal line 620 is electrically connected to the first electrode 210, and the touch driving signal line 620 can transmit a touch driving signal to the first electrode 210, and a sensing capacitance can be generated between the first electrode 210 and the second electrode 510, so as to realize the touch function of the display module 10. When the touch driving transistor 610 is turned off, when the first source 612 and the first drain 613 are turned off, the electrical connection between the touch driving signal line 620 and the first electrode 210 is also turned off, so that when the first electrode 210 needs to participate in the light-emitting display of the display module 10, the touch driving signal is less likely to interfere with the driving current signal transmitted to the first electrode 210, and the display module 10 can have good light-emitting display stability.

[0086] In some optional embodiments, the array substrate 100 may include a first insulating layer 120, a second insulating layer 130 located on a side of the first insulating layer 120 facing the first electrode layer 200, and a third insulating layer 140 located on a side of the second insulating layer 130 facing away from the first insulating layer 120. Optionally, the array substrate 100 may further include a base 110 located on a side of the first insulating layer 120 facing away from the second insulating layer 130.

[0087] Optionally, the touch drive transistor 610 may be provided on the array substrate 100. Optionally, the touch drive transistor 610 may further include a first gate 611, which may be provided on a side of the first insulating layer 120 away from the second insulating layer 130, the touch drive signal line 620 may be provided between the first insulating layer 120 and the second insulating layer 130, and the first source 612 and the first drain 613 may be provided between the second insulating layer 130 and the third insulating layer 140. Optionally, the touch drive transistor 610 may further include a first active layer 614, which may be provided on a side of the first gate 611 toward the base 110.

[0088] In some optional embodiments, the first electrodes 210 are spaced apart in a first direction Y and a second direction Z, and the touch drive transistors 610 corresponding to two first electrodes 210 adjacent to each other in the first direction Y are connected to the same touch drive signal line 620.

[0089] Optionally, the touch drive transistor 610 corresponding to a first electrode 210 may refer to the touch drive transistor 610 connected to the first electrode 210. Optionally, the touch drive transistors 610 corresponding to two first electrodes 210 adjacent to each other in the first direction Y being connected to the same touch drive signal line 620 may refer to the touch drive transistor 610 connected to one of the first electrodes 210 adjacent to each other in the first direction Y being connected to the same touch drive signal line 620.

[0090] Optionally, the number of touch drive signal lines 620 may be at least two, where the at least two touch drive signal lines 620 are spaced apart in the second direction Z, and the touch drive transistors 610 corresponding to the two first electrodes 210 adjacent in the second direction Z are connected to different touch drive signal lines 620.

[0091] Optionally, the touch drive transistors 610 corresponding to the two first electrodes 210 adjacent in the second direction Z may be connected to different touch drive signal lines 620, and among the first electrodes 210 adjacent in the second direction Z, the touch drive transistor 610 connected to one and the touch drive transistor 610 connected to the other may be connected to different touch drive signal lines 620.

[0092] Optionally, some touch drive signal lines 620 may be shaped to extend along the first direction Y so as to be connected to touch drive transistors 610 corresponding to two adjacent first electrodes 210 in the first direction Y, respectively.

[0093] Optionally, if two sub-pixels are adjacent in a first direction Y, then these two sub-pixels are considered to be located in the same row, and if two sub-pixels are adjacent in a second direction Z, then these two sub-pixels are considered to be located in the same column.

[0094] In these optional embodiments, the touch drive transistors 610 corresponding to two first electrodes 210 adjacent to each other in the first direction Y are connected to the same touch drive signal line 620, so that a single touch drive signal line can simultaneously supply touch drive signals to the first electrodes 210 of the sub-pixels located in the same row in the first direction Y, and simultaneously control the touch functions of the sub-pixels in a row, thereby facilitating the touch control of the display module 10.

[0095] In some optional embodiments, the light-emitting unit EL is configured not to emit light when the touch driving transistor 610 connected to the first electrode 210 of the light-emitting unit EL is turned on. When the light-emitting unit EL does not emit light, i.e., when the first electrode 210 below the light-emitting portion 410 does not need to participate in the light-emitting display of the display module 10, the first source 612 and the first drain 613 can be turned on each other, so that the driving current signal for light-emitting display is less likely to interfere with the touch driving signal, and the display module 10 can have good touch stability.

[0096] Optionally, the touch driving transistor 610 is configured to be turned off when the light-emitting section 410 corresponding to the first electrode 210 connected to the touch driving transistor 610 emits light. When the light-emitting section 410 emits light, that is, when the first electrode 210 below the light-emitting section 410 needs to participate in the light-emitting display of the display module 10, the first source 612 and the first drain 613 can be turned off each other, so that the touch driving signal is less likely to interfere with the driving current signal for light-emitting display, and the display module 10 can have good light-emitting display stability.

[0097] Optionally, the light-emitting portion 410 corresponding to the first electrode 210 connected to the touch driving transistor 610 may refer to the light-emitting portion 410 on the side away from the array substrate 100 in the thickness direction X of the first electrode 210 connected to the touch driving transistor 610.

[0098] As shown in FIG. 2, in some optional embodiments, the display module 10 further includes a driving transistor and an emission control transistor 800, where the driving transistor and the emission control transistor 800 are connected between the power supply voltage signal line VDD of the display module and the emission unit EL, the driving transistor is used to drive the emission of the emission unit EL, the emission control transistor 800 includes a second source 820 and a second drain 830, one of the second source 820 and the second drain 830 is connected to the first electrode 210, and the other of the second source 820 and the second drain 830 is connected to the driving transistor, and the touch driving transistor 610 is configured to be turned on when the emission control transistor 800 is turned off.

[0099] In this embodiment, the emission display of each sub-pixel in the display module 10 can be controlled by the emission control transistor 800. When the second source 820 and the second drain 830 are turned on, the driving transistor transmits a driving current signal to the first electrode 210 via the emission control transistor 800 to realize the emission display of the sub-pixel. When the second source 820 and the second drain 830 are turned off, the sub-pixel does not need to emit light.

[0100] Optionally, the touch driving transistor 610 is configured to be turned on when the second source 820 and the second drain 830 of the light emission control transistor 800 connected to the same first electrode 210 together with the touch driving transistor 610 are turned off; that is, in the touch driving transistor 610 and the light emission control transistor 800 connected to the first electrode 210 in the same subpixel, only when the second source 820 and the second drain 830 of the light emission control transistor 800 are turned off, the first source 612 and the first drain 613 of the touch driving transistor 610 are turned on each other, so that when the subpixel performs light emission display, the touch driving signal is less likely to interfere with the driving current signal, and the display module 10 can have good light emission display stability.

[0101] Optionally, the light-emitting control transistor 800 may be provided on the array substrate 100. Optionally, the light-emitting control transistor 800 may further include a second gate 810, which may be provided on a side of the first insulating layer 120 away from the second insulating layer 130, and the second source 820 and the second drain 830 may be provided between the second insulating layer 130 and the third insulating layer 140. Optionally, the display transistor may further include a second active layer 840, which may be provided on a side of the second gate 810 toward the base 110.

[0102] Optionally, the array substrate 100 may further include a source-drain conductive portion 160 and a fourth insulating layer 150 located on a side of the third insulating layer 140 away from the second insulating layer 130. The source-drain conductive portion 160 may be provided between the third insulating layer 140 and the fourth insulating layer 150, the first electrode 210 may be via-connected to the source-drain conductive portion 160, the source-drain conductive portion 160 may be via-connected to the first source 612 or the first drain 613 of the touch driving transistor 610, and the source-drain conductive portion 160 may be via-connected to the second source 820 or the second drain 830 of the light-emitting control transistor 800.

[0103] In some optional embodiments, the display module 10 further includes an emission control signal line EM, which is connected to the first gate 611 and the second gate 810 to transmit an emission control signal to the touch driving transistor 610 and the emission control transistor 800, where one of the touch driving transistor 610 and the emission control transistor 800 is an N-type transistor and the other is a P-type transistor.

[0104] The light-emitting control signal line EM transmits a light-emitting control signal to the touch driving transistor 610 and the light-emitting control transistor 800, thereby realizing on / off control between the first source 612 and the first drain 613, and also realizing on / off control between the second source 820 and the second drain 830, thereby simultaneously realizing the touch function for the display module 10 and control of the light-emitting display.

[0105] Since one of the touch drive transistor 610 and the light-emitting control transistor 800 is an N-type transistor and the other is a P-type transistor, the on conditions of the touch drive transistor 610 and the light-emitting control transistor 800 are different, that is, when the touch drive transistor 610 and the light-emitting control transistor 800 are turned on, the desired light-emitting control signal is different, making it difficult for the touch drive transistor 610 and the light-emitting control transistor 800 to be turned on at the same time, and making it difficult for the touch drive signal and the drive current signal to interfere with each other.

[0106] Specifically, in the touch driving transistor 610 and the emission control transistor 800 connected to one subpixel, when the emission control signal line EM transmits a certain level of an emission control signal to the first gate 611 and the second gate 810, an ON state between the first source 612 and the first drain 613 and an OFF state between the second source 820 and the second drain 830 can be simultaneously realized to realize the touch operation of the subpixel; or when the emission control signal line EM transmits a certain level of an emission control signal to the first gate 611 and the second gate 810, an OFF state between the first source 612 and the first drain 613 and an ON state between the second source 820 and the second drain 830 can be simultaneously realized to realize the emission display operation of the subpixel.

[0107] For example, the emission control transistor 800 may be a P-type transistor, and the touch drive transistor 610 may be an N-type transistor. When the emission control signal line EM transmits an emission control signal having a high level to the first gate 611 and the second gate 810, the connection between the first source 612 and the first drain 613 is turned on, and the connection between the second source 820 and the second drain 830 is turned off, so that the touch drive signal is transmitted to the first electrode 210 and at the same time, the drive current signal is no longer transmitted to the first electrode 210, and the touch operation of the sub-pixel can be stably realized. When the emission control signal line EM transmits an emission control signal having a low level to the first gate 611 and the second gate 810, the connection between the first source 612 and the first drain 613 is turned off and the connection between the second source 820 and the second drain 830 is turned on, so that the touch drive signal is not transmitted to the first electrode 210 and at the same time, the drive current signal is transmitted to the first electrode 210, thereby stably realizing the emission display operation of the sub-pixel.

[0108] As shown in FIG. 3, in some optional embodiments, the display module 10 further includes a touch control module 10a and a touch control line 10b, where the touch control module 10a is connected to a touch drive signal line 620 via the touch control line 10b, and the touch control module 10a is used to transmit a touch drive signal to the touch drive transistor 610 via the touch control line 10b and the touch drive signal line 620.

[0109] Optionally, the number of the touch control lines 10b is the same as the number of the emission control signal lines EM.

[0110] Optionally, one emission control signal line EM can be connected only to the second gates 810 of each emission control transistor 800 connected to one row of sub-pixels, thereby controlling the emission display of only one row of sub-pixels, in which case the number of emission control signal lines EM is equal to the number of rows of sub-pixels in the display module 10, i.e., the number of emission control signal lines EM is equal to the number of rows of the light-emitting sections 410 and / or first electrodes 210.

[0111] Optionally, one emission control signal line EM may be connected to the second gate 810 of each emission control transistor 800 connected to at least two rows of sub-pixels, so that one emission control signal line EM can simultaneously control the emission display of multiple rows of sub-pixels, and in this case, the number of emission control signal lines EM is smaller than the number of rows of sub-pixels in the display module 10, i.e., the number of emission control signal lines EM is smaller than the number of rows of the light-emitting units 410 and / or first electrodes 210, so as to better reduce the number of emission control signal lines EM in the display module 10 and facilitate the control of the emission display of each sub-pixel of the display module 10.

[0112] Optionally, as shown in FIG. 3 , one touch control line 10b can be connected to only one touch drive signal line 620 to transmit a touch drive signal to only one touch drive signal line 620, so that the touch drive transistor 610 can transmit a touch drive signal to only the first electrodes 210 of one row of sub-pixels to realize the touch function of one row of sub-pixels. In this case, the number of touch control lines 10b is equal to the number of rows of sub-pixels in the display module 10, that is, the number of touch control lines 10b is equal to the number of rows of the light-emitting units 410 and / or the first electrodes 210.

[0113] FIG. 4 is a schematic diagram showing a partial structure of a display module 10 according to an embodiment of the present application.

[0114] Optionally, as shown in FIG. 4 , one touch control line 10b can be connected to at least two touch drive signal lines 620 to simultaneously transmit touch drive signals to the at least two touch drive signal lines 620, so that the touch drive transistors 610 can transmit touch drive signals to the first electrodes 210 of multiple rows of sub-pixels to simultaneously realize the touch function of multiple rows of sub-pixels. In this case, the number of touch control lines 10b is smaller than the number of rows of sub-pixels in the display module 10, i.e., the number of touch control lines 10b is smaller than the number of rows of the light-emitting units 410 and / or the first electrodes 210, so that the number of touch control lines 10b in the display module 10 can be better reduced, and the touch control module 10a can easily control the touch operation of each sub-pixel of the display module 10.

[0115] Optionally, when there are at least two touch control lines 10b, each touch control line 10b is connected to the same touch control module 10a, and the touch control module 10a can transmit touch drive signals to any one or more touch control lines 10b relatively independently.

[0116] In these optional embodiments, the number of touch control lines 10b can be made the same as the number of light-emitting control signal lines EM, so that each touch control line 10b and each light-emitting control signal line EM can correspond to each other in pairs, so that the operation of the touch control module 10a in the display module 10 transmitting the touch driving signal to the first electrode 210 through the touch control line 10b and the operation of the light-emitting control signal controlling the touch driving transistor 610 and the light-emitting control transistor 800 can be relatively synchronized.

[0117] For example, by making the number of touch control lines 10b the same as the number of emission control signal lines EM, when any one of the emission control signal lines EM and the emission control transistor 800 connected to the first electrode 210 of the subpixel of a certain row are controlled to be turned on, the touch control module 10a can stop transmitting the touch drive signal to the one of the touch control lines 10b corresponding to the one of the emission control signal lines EM, thereby stopping the transmission of the touch drive signal to the touch drive transistor 610 connected to the subpixel of the row; when the subpixel of the row emits light for display, the first source 612 and the first drain 613 of the touch drive transistor 610 connected to the subpixel of the row is turned on, and the touch control line 10b also stops transmitting the touch drive signal to the touch drive transistor 610 connected to the subpixel of the row via the touch drive signal line 620, thereby better reducing the power consumption of the display module 10.

[0118] Optionally, only when any one of the emission control signal lines EM and the emission control transistor 800 connected to the first electrode 210 of the subpixel in a row are controlled to be off, the touch control module 10a transmits a touch drive signal to a touch control line 10b corresponding to the one of the emission control signal lines EM, thereby transmitting a drive signal to the touch drive transistor 610 connected to the subpixel in the row, thereby realizing the touch operation of the subpixel in the row.

[0119] In addition, for example, by making the number of touch control lines 10b the same as the number of emission control signal lines EM, when any one of the emission control signal lines EM and the emission control transistor 800 connected to the first electrode 210 of the subpixels of the multiple rows are controlled to be on, the touch control module 10a can stop transmitting the touch drive signal to the one touch control line 10b corresponding to the one of the emission control signal lines EM, and stop transmitting the touch drive signal to the touch drive transistor 610 connected to the subpixels of the multiple rows, so that when the subpixels of the multiple rows perform emission display, the first source 612 and the first drain 613 of the touch drive transistor 610 connected to the subpixels of the multiple rows are turned off, and the touch control line 10b also stops transmitting the touch drive signal to the touch drive transistor 610 connected to the subpixels of the row via the touch drive signal line 620, so as to better reduce the power consumption of the display module 10.

[0120] Optionally, only when the light-emitting control transistor 800 connected to any one of the light-emitting control signal lines EM and the first electrodes 210 of the sub-pixels in the multiple rows is controlled to be off, the touch control module 10a transmits a touch drive signal to one of the touch control lines 10b corresponding to the light-emitting control signal line EM, and transmits the touch drive signal to the touch drive transistors 610 connected to the sub-pixels in the multiple rows, thereby realizing the touch operation of the sub-pixels in the multiple rows.

[0121] In some optional embodiments, the touch control module 10a is further used to reset the first electrode 210 by transmitting a reset signal to the first electrode 210 through the touch drive signal line 620 and the touch drive transistor 610. Optionally, the touch control module 10a can be used to transmit a reset signal to the touch drive signal line 620. When one or more sub-pixels in the display module 10 enter a non-emission period, the touch control module 10a can transmit a reset signal to the one or more sub-pixels through the touch drive signal line 620 to realize resetting the voltage of the first electrode 210.

[0122] Optionally, the touch drive signal line 620 may be multiplexed as a reset signal line in the display module, so that the reset signal sent from the touch control module 10a is transmitted to the first electrode 210 via the touch drive signal line 620.

[0123] In some embodiments, each light-emitting unit has a display cycle, and the display cycle includes at least one light-emitting period and at least one non-light-emitting period. Here, the light-emitting unit can perform light-emitting display during the light-emitting period, and can not perform light-emitting display during the non-light-emitting period. Specifically, a period corresponding to the display of one frame of an image can be one display cycle.

[0124] In one display period of a light-emitting unit, only when the light-emitting unit is in a first non-light-emitting period, the touch control module 10a can transmit a reset signal to the first electrode 210 of the light-emitting unit to reset the voltage of the first electrode 210. Optionally, in the first non-light-emitting period of the light-emitting unit, the touch control module 10a can transmit a reset signal to the first electrode 210 of the light-emitting unit, and then transmit a touch driving signal to the first electrode 210 of the light-emitting unit in the first non-light-emitting period of the light-emitting unit. Optionally, when the light-emitting unit is in a non-light-emitting period after the first non-light-emitting period, the touch control module 10a can transmit a touch driving signal to the first electrode 210 of the light-emitting unit to realize a touch function of the sub-pixel corresponding to the light-emitting unit.

[0125] 3 , in some embodiments of the present application, the display module 10 includes a touch sensing signal line 700 connected to the second electrode 510, and the touch sensing signal line 700 is used to receive a touch sensing signal output from the second electrode 510. Optionally, the touch sensing signal line 700 may be connected to the touch control module 10a, so that the touch control module 10a obtains the touch sensing signal fed back from the second electrode 510 through the touch sensing signal line 700 to detect a change in the sensing capacitance between the first electrode 210 and the second electrode 510.

[0126] Optionally, when the light-emitting unit EL emits light, the touch sensing signal line 700 is used to transmit a negative power supply voltage signal to the second electrode 510 .

[0127] Optionally, the touch control module 10a may be configured to detect a change in sensing capacitance between the first electrode 210 and the second electrode 510 during a non-light-emitting period of the light-emitting unit by obtaining a touch sensing signal fed back from the second electrode 510 via the touch sensing signal line 700 when the light-emitting unit does not emit light. Optionally, the touch control module 10a may be configured to realize a light-emitting display of the light-emitting unit during a light-emitting period of the light-emitting unit by transmitting a negative power supply voltage signal (e.g., an ELVSS signal) to the second electrode 510 via the touch sensing signal line 700 when the light-emitting unit emits light.

[0128] In some embodiments of the present application, there are multiple connection methods between the touch sensing signal line 700 and the second electrode 510.

[0129] 3, in some optional embodiments, the touch sense signal line 700 may be directly connected to the second electrodes 510. Optionally, at least two second electrodes 510 are spaced apart in a first direction Y and shaped to extend along a second direction Z.

[0130] Optionally, the orthogonal projections on the array substrate 100 of the light-emitting portions 410 located in the same column may be located within the orthogonal projections on the array substrate 100 of the same second electrode 510, so that a single touch sensing signal line 700 can obtain sensed capacitance changes between the first electrodes 210 and the second electrodes 510 in at least one column of sub-pixels.

[0131] Optionally, the orthogonal projections of at least two adjacent rows of light emitting units 410 spaced apart in the first direction Y on the array substrate 100 may be located within the orthogonal projections of the same second electrode 510 on the array substrate 100, and / or the orthogonal projections of at least two adjacent rows of first electrodes 210 spaced apart in the first direction Y on the array substrate 100 may be located within the orthogonal projections of the same second electrode 510 on the array substrate 100. In this way, a single touch sensing signal line 700 connected to one second electrode 510 can simultaneously obtain changes in sensing capacitance between the first electrodes 210 and the second electrodes 510 in multiple rows of subpixels, thereby better reducing the number of touch sensing signal lines 700 and facilitating the arrangement of the touch sensing signal lines 700.

[0132] FIG. 5 is a schematic diagram of a partial structure of a display module 10 according to another embodiment of the present application, and FIG. 6 is a partial cross-sectional view of the display module 10 according to another embodiment of the present application.

[0133] As shown in Figures 5 and 6, in some optional other embodiments, the display module further includes at least two isolation structures 310 spaced apart in a first direction Y and shaped to extend along a second direction Z, the material of the isolation structures 310 includes a conductive material, the second electrodes 510 are respectively provided in different pixel openings 322, and the second electrodes 510 are spaced apart in the first direction Y and the second direction Z, and the second electrodes 510 adjacent to each other in the second direction Z are electrically connected to each other by the isolation structures 310.

[0134] The touch sensing signal line 700 may be connected to the isolation structure 310 and thus connected to the second electrode 510 through the isolation structure 310. The touch sensing signal line 700 may be used to transmit a touch sensing signal to the second electrode 510 through the isolation structure 310.

[0135] Optionally, the isolation structure 310 may surround at least a portion of the pixel opening 322 to facilitate connection between the isolation structure 310 and the second electrode 510, thereby also improving the connectable area between the isolation structure 310 and the second electrode 510.

[0136] Optionally, the touch sensing signal line 700 may be connected to the isolation structure 310, such that the touch sensing signal line 700 may be connected to the second electrode 510 through the isolation structure 310. Here, the touch sensing signal line 700 can receive a touch sensing signal output from the second electrode 510 through the isolation structure 310, such that one touch sensing signal line 700 can obtain sensing capacitance changes between the first electrode 210 and the second electrode 510 in at least one column of sub-pixels through the isolation structure 310.

[0137] FIG. 7 is a partial structural schematic diagram of a display module 10 according to a further embodiment of the present application, and FIG. 8 is a partial cross-sectional view of a display module 10 according to another embodiment of the present application.

[0138] Optionally, the isolation structures 310 may be formed in a lattice shape, as shown in Figures 7 and 8. Optionally, some of the isolation structures 310 may be formed to extend along a first direction Y, and some of the isolation structures 310 may be formed to extend along a second direction Z, so that the isolation structures 310 can cross and form a lattice shape.

[0139] Optionally, some adjacent second electrodes 510 in the first direction Y are connected by the isolation structure 310. Optionally, at least two rows of adjacent second electrodes 510 spaced apart in the first direction Y may be connected to the same isolation structure 310, for example, at least two rows of adjacent second electrodes 510 spaced apart in the first direction Y may be located in an openwork area of ​​a lattice-shaped isolation structure 310, so that one touch sensing signal line 700 can simultaneously obtain sensing capacitance changes between the first electrodes 210 and the second electrodes 510 in at least two rows of sub-pixels through the isolation structure 310.

[0140] For convenience of explanation, the following embodiments will be described taking an example in which the touch sensing signal line 700 is connected to the second electrode 510 through the isolation structure 310.

[0141] As shown in FIG. 8 , in some optional embodiments, the separation structure 310 has a first end 310a and a second end 310b opposite each other in the thickness direction X of the display module 10, the second end 310b being located on the side of the first end 310a away from the array substrate 100, and the orthogonal projection of the first end 310a on the array substrate 100 being located within the orthogonal projection of the second end 310b on the array substrate 100.

[0142] Optionally, in the direction away from the array substrate 100, the distance between the surfaces of the isolation structure 310 facing the pixel openings 322 on either side of the isolation structure 310 gradually increases, such that the orthogonal projection of the first end 310a of the isolation structure 310 on the array substrate 100 lies within the orthogonal projection of the second end 310b of the isolation structure 310 on the array substrate 100.

[0143] In these optional embodiments, when the orthogonal projection of the first end 310a of the separation structure 310 on the array substrate 100 is positioned within the orthogonal projection of the second end 310b of the separation structure 310 on the array substrate 100, when the light-emitting functional layer 400 of the display module 10 is deposited, the second end 310b can shield the material for manufacturing at least a portion of the light-emitting functional layer 400 so as to block the light-emitting functional layer 400 between adjacent subpixels, and the light-emitting sections 410 arranged at intervals can be easily formed. As a result, there is no need to provide a mask plate with high precision when depositing the light-emitting functional layer 400 of the display module 10, for example, there is no need to provide a high-precision metal mask (Fine Metal Mask, FMM) when depositing the light-emitting functional layer 400, thereby reducing the manufacturing cost of the display module 10.

[0144] FIG. 9 is a partial cross-sectional view of a display module 10 according to another embodiment of the present application.

[0145] As shown in FIG. 9 , in some optional embodiments, the isolation structure 310 includes a first isolation portion 311 and a second isolation portion 312 located on a side of the first isolation portion 311 away from the array substrate 100, the second isolation portion 312 protruding from the first isolation portion 311 toward the pixel opening 322, and the orthogonal projection of the first isolation portion 311 on the array substrate 100 is located within the orthogonal projection of the second isolation portion 312 on the array substrate 100.

[0146] Optionally, the first end 310a may be located in a first separation portion 311 and the second end 310b may be located in a second separation portion 312. Optionally, the second separation portion 312 may be provided extending toward the pixel aperture 322 relative to the first separation portion 311.

[0147] Optionally, the material of the first separation portion 311 comprises a conductive material, and adjacent second electrodes 510 in the second direction Z are connected by the first separation portion 311 .

[0148] Since the orthogonal projection of the first separation portion 311 on the array substrate 100 is positioned within the orthogonal projection of the second separation portion 312 on the array substrate 100, when the light-emitting functional layer 400 and the second electrode layer 500 of the display module 10 are vapor-deposited, the second separation portion 312 can shield at least a part of the material for manufacturing the light-emitting functional layer 400 and the material for manufacturing the second electrode layer 500 so as to block the light-emitting functional layer 400 and the second electrode layer 500 between adjacent sub-pixels, and can easily form the light-emitting portions 410 and the second electrodes 510 arranged at multiple intervals. As a result, there is no need to provide a high-precision mask plate when vapor-depositing the light-emitting functional layer 400 and the second electrode layer 500 of the display module 10. For example, there is no need to provide a high-precision metal mask plate when vapor-depositing the light-emitting functional layer 400 and the second electrode layer 500, so that the manufacturing cost of the display module 10 can be reduced.

[0149] In some optional embodiments, there are multiple configurations for the relative positions of the isolation structure 310 and the pixel defining layer 320. In some embodiments, as shown in Fig. 8, the isolation structure 310 may be disposed on a side of the pixel restricting portion 321 that is farther away from the array substrate 100, so that the isolation structure 310 has a height greater than that of the array substrate 100, and facilitates the isolation structure 310 blocking the light-emitting functional layer 400.

[0150] FIG. 10 is a partial cross-sectional view of a display module 10 according to yet another embodiment of the present invention.

[0151] As shown in FIG. 10, in some other embodiments, a receiving groove 321a is opened in the pixel restricting portion 321, and at least a part of the separation structure 310 is located in the receiving groove 321a, so that the separation structure 310 is less likely to have an excessively large height compared to the array substrate 100, and the thickness of the display module 10 can be better reduced.

[0152] As shown in FIG. 10 , optionally, the surface shape of the side of the isolation structure 310 facing the pixel opening 322 is different from the surface shape of the isolation structure 310 facing the gap between adjacent isolation structures 310, and the specific shape of the inner wall surface of the gap between adjacent isolation structures 310 can be provided according to the needs of the manufacturing process in the gap or the needs of the light transmittance in the gap, so that the gap between adjacent isolation structures 310 can be manufactured by a better manufacturing process and manufacturing method, or light rays within a certain angle range can pass through the gap between adjacent isolation structures 310 well, thereby facilitating the design of the light transmittance of the display module 10.

[0153] FIG. 11 is a partial cross-sectional view of a display module 10 according to yet another embodiment of the present invention.

[0154] As shown in FIG. 11 , in some other embodiments, the surface shape of the isolation structure 310 facing the pixel opening 322 may be the same as the surface shape of the isolation structure 310 facing the space between adjacent isolation structures 310, so that when manufacturing the isolation structure 310, the surface of the isolation structure 310 facing the pixel opening 322 and the surface of the isolation structure 310 facing the space between adjacent isolation structures 310 can be manufactured using the same manufacturing process method, thereby improving the manufacturing efficiency of the display module 10.

[0155] An embodiment of the second aspect of the present application provides a display device, which includes the display module 10 according to any of the embodiments of the first aspect. Since the display device according to the embodiment of the second aspect of the present application includes the display module 10 according to any of the embodiments of the first aspect, the display device according to the embodiment of the second aspect of the present application has the beneficial technical effects of the display module 10 according to any of the embodiments of the first aspect, and the description thereof will be omitted here.

[0156] The display device in the embodiment of the present application includes, but is not limited to, devices with display capabilities, such as mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, gates, smart landlines, and consoles.

[0157] FIG. 12 is a flowchart of the method for driving the display module 10 according to the embodiment of the present application, and FIG. 13 is a schematic sequence diagram of the method for driving the display module 10 according to the embodiment of the present application.

[0158] Combining Figures 1 to 11 and referring to Figures 12 and 13, an embodiment of the third aspect of the present application provides a driving method for a display module 10 according to any of the above embodiments, wherein each light-emitting unit has a display cycle, the display cycle including at least one light-emitting period and at least one non-light-emitting period, and the driving method includes the following steps:

[0159] Step S01: In the light emitting period of the light emitting unit, a driving current signal is input to the first electrode 210 of the light emitting unit.

[0160] Step S02: In the non-light-emitting period of the light-emitting unit, a touch driving signal or a reset signal is transmitted to the first electrode 210 of the light-emitting unit.

[0161] In the driving method of the present application, when a touch driving signal or a reset signal is transmitted to the first electrode 210 of the light-emitting unit only during the non-light-emitting period of the light-emitting unit, mutual interference between the driving current signal and the touch driving signal and the reset signal is unlikely to occur, so that the display module 10 can have good light-emitting display stability and touch stability.

[0162] In some alternative embodiments, step S02 further includes the following steps:

[0163] Step S021: As shown in FIG. 13, in the first non-light-emitting period in the display period of the light-emitting unit, a reset signal is transmitted to the first electrode 210 of the light-emitting unit.

[0164] Optionally, in the first non-light-emitting period during the display cycle of the light-emitting unit, the touch control module 10a can transmit a reset signal to the first electrode 210 through the touch control line 10b, the touch driving signal line 620 and the touch driving transistor 610 to realize resetting of the first electrode 210.

[0165] Optionally, step S021 further includes the following steps:

[0166] Step S0211: As shown in FIG. 13, in the first non-light-emitting period in the display period of the light-emitting unit, a reset signal and a touch driving signal are sequentially transmitted to the first electrode 210 of the light-emitting unit.

[0167] By providing step S0211, after the touch control module 10a transmits a reset signal to the first electrode 210 of the light-emitting unit in the first non-light-emitting period of the light-emitting unit, the touch control module 10a can further transmit a touch driving signal to the first electrode 210 of the light-emitting unit in the first non-light-emitting period of the light-emitting unit.

[0168] FIG. 14 is a schematic sequence diagram of a driving method for the display module 10 according to another embodiment of the present application.

[0169] Optionally, the display cycle includes at least two non-light emitting periods, and step S021 further includes the following steps:

[0170] Step S022: As shown in FIG. 14, in a non-light-emitting period after the first non-light-emitting period in the display period of the light-emitting unit, a touch driving signal is transmitted to the first electrode 210 of the light-emitting unit.

[0171] Optionally, during a non-light-emitting period after the first non-light-emitting period in the display period of the light-emitting unit, the touch control module 10a can transmit a touch drive signal to the first electrode 210 via the touch control line 10b, the touch drive signal line 620 and the touch drive transistor 610.

[0172] By transmitting a reset signal to the first electrode 210 in the first non-light-emitting period in a display cycle to reset the first electrode 210, in the non-light-emitting period after the first non-light-emitting period in a display cycle, the touch driving signal is less affected by the driving current signal remaining in the first electrode 210, so that the display module 10 has good touch stability.

[0173] In some optional embodiments, when the light-emitting unit transitions from a non-light-emitting period to a light-emitting period, it transitions from a state of transmitting a reset signal to the first electrode 210 of the light-emitting unit to a state of stopping transmitting the reset signal to the first electrode 210 of the light-emitting unit, or transitions from a state of transmitting a touch drive signal to the first electrode 210 of the light-emitting unit to a state of stopping transmitting the touch drive signal to the first electrode 210 of the light-emitting unit.

[0174] Optionally, when the light-emitting unit transitions from a non-light-emitting period to a light-emitting period, transitioning from a state of transmitting a reset signal to a state of stopping transmission of the reset signal to the first electrode 210 of the light-emitting unit may refer to the touch control module 10a stopping transmission of the reset signal to the first electrode 210 of the light-emitting unit when the light-emitting unit transitions from a non-light-emitting period to a light-emitting period, i.e., when the level of the light-emitting control signal changes, for example, when the light-emitting control signal changes from a high level to a low level.

[0175] Optionally, the reset signal may be a fixed potential signal. Optionally, the reset signal may be a constant low level signal.

[0176] Optionally, when the light-emitting unit transitions from a non-light-emitting period to a light-emitting period, transitioning from a state of transmitting a touch drive signal to the first electrode 210 of the light-emitting unit to a state of stopping the transmission of the touch drive signal to the first electrode 210 of the light-emitting unit may refer to the touch control module 10a stopping the transmission of the touch drive signal to the first electrode 210 of the light-emitting unit when the light-emitting unit transitions from a non-light-emitting period to a light-emitting period, that is, when the level of the light-emitting control signal changes, for example, when the light-emitting control signal changes from a high level to a low level.

[0177] Optionally, the touch drive signal is a pulse signal. At the moment before the light emission control signal changes from a high level to a low level, the touch drive signal may be a low level signal.

[0178] Optionally, the minimum voltage potential of the reset signal is the same as the minimum voltage potential of the touch drive signal.

[0179] In these optional embodiments, at the moment before the light emission control signal changes from a high level to a low level, the minimum potential of the reset signal may be the same as the minimum potential of the touch drive signal, and the reset signal may be a low-level signal, thereby making the sub-pixel less susceptible to flickering.

[0180] FIG. 15 is a structural schematic diagram of a pixel circuit according to an embodiment of the present invention.

[0181] Referring to Figures 12 to 15 in combination with Figures 1 to 11, an embodiment of a fourth aspect of the present application provides a pixel circuit, which can be used in the display module 10 in any of the above embodiments.

[0182] The pixel circuit includes an emission unit EL, an emission control transistor 800 connected to the emission unit EL, and a touch drive transistor 610 connected to the emission unit EL. During the emission period, the touch drive transistor 610 is turned off and the emission control transistor 800 is turned on to control the emission of the emission unit EL, and during the non-emission period, the emission control transistor 800 is turned off and the touch drive transistor 610 is turned on to transmit a touch drive signal to the emission unit EL.

[0183] In the pixel circuit according to the embodiment of the present application, the emission control signal line EM may be the emission control signal line EM described in any of the above embodiments.

[0184] Optionally, the light-emitting unit EL includes a first electrode 210, a light-emitting unit 410, and a second electrode 510 that are stacked together, the light-emitting control transistor 800 is connected to the first electrode 210 to control the light-emitting of the light-emitting unit EL, and the touch driving transistor 610 is connected to the first electrode 210 and is used to transmit a touch driving signal to the first electrode 210. Optionally, the non-light-emitting period may refer to the non-light-emitting period of the light-emitting unit EL, for example, in the non-light-emitting period of the light-emitting unit EL, the light-emitting unit 410 in the light-emitting unit EL does not perform light-emitting display. Optionally, the light-emitting unit EL may further have a light-emitting period, in which the light-emitting unit EL can have the light-emitting unit 410 in the light-emitting unit EL perform light-emitting display when the light-emitting control transistor 800 is turned on.

[0185] Optionally, the light-emitting unit EL in the pixel circuit according to this embodiment can be the light-emitting unit EL in any of the above embodiments. Optionally, the touch driving transistor 610 in the pixel circuit according to this embodiment can be the touch driving transistor 610 in any of the above embodiments. Optionally, the light-emitting control transistor 800 in the pixel circuit according to this embodiment can be the light-emitting control transistor 800 in any of the above embodiments.

[0186] When the light-emitting control transistor 800 and the touch driving transistor 610 are both arranged to be connected to the first electrode 210, when the pixel circuit is applied to a display module, the first electrode 210 can not only participate in the light-emitting display of the display module as a pixel electrode of the display module, but also be multiplexed as a touch electrode of the display module to realize the touch function of the display module.

[0187] In some optional embodiments, the pixel circuit further includes an emission control signal line EM, which is connected to the control end of the emission control transistor 800 and the control end of the touch drive transistor 610, and the emission control signal line EM is used to transmit an emission control signal to the emission control transistor 800 and the touch drive transistor 610.

[0188] The light-emitting control signal line EM can simultaneously control the touch driving transistor 610 and the light-emitting control transistor 800 by transmitting a light-emitting control signal to the touch driving transistor 610 and the light-emitting control transistor 800. Here, in the non-light-emitting period, the light-emitting control signal can control the light-emitting control transistor 800 to be turned off so that the light-emitting unit EL does not emit light, and the light-emitting control signal can control the touch driving transistor 610 to be turned on so that the touch driving signal is transmitted to the light-emitting unit EL, so that in the non-light-emitting period, the light-emitting unit EL can perform a touch operation by the action of the touch driving signal, and the light-emitting unit EL is less susceptible to the influence of the driving current signal for driving the light emission, and even if the first electrode 210 in the light-emitting unit EL is involved in the touch operation of the display module, the first electrode 210 is less susceptible to the interference of the driving current signal.

[0189] Optionally, one of the emission control transistor 800 and the touch driving transistor 610 is an N-type transistor and the other is a P-type transistor, so that the on conditions of the emission control transistor 800 and the touch driving transistor 610 are different, that is, the emission control signals required when the emission control transistor 800 and the touch driving transistor 610 are turned on are different, and the emission control transistor 800 and the touch driving transistor 610 are prevented from being turned on at the same time, so that the touch driving signal and the driving current signal that need to be transmitted to the light-emitting unit EL are less likely to interfere with each other.

[0190] Specifically, in the emission control transistor 800 and the touch driving transistor 610 connected to one light-emitting unit EL, when the emission control signal line EM transmits a certain level of an emission control signal to the control end of the emission control transistor 800 and the control end of the touch driving transistor 610, the touch driving transistor 610 can be turned on and the emission control transistor 800 can be turned off simultaneously, so that the light-emitting unit EL can participate in the touch operation; or, when the emission control signal line EM transmits a certain level of an emission control signal to the control end of the emission control transistor 800 and the control end of the touch driving transistor 610, the touch driving transistor 610 can be turned off and the emission control transistor 800 can be turned on simultaneously, so that the light-emitting unit EL can perform a light-emitting display operation.

[0191] For example, the emission control transistor 800 may be a P-type transistor, and the touch driving transistor 610 may be an N-type transistor. When the emission control signal line EM transmits an emission control signal having a high level to the control end of the touch driving transistor 610 and the control end of the emission control transistor 800, the touch driving transistor 610 is turned on and the emission control transistor 800 is turned off, so that the touch driving signal can be transmitted to the first electrode 210 and the driving current signal for driving emission is not transmitted to the first electrode 210, and the touch operation of the light-emitting unit EL is more stable. When the emission control signal line EM transmits an emission control signal having a low level to the control end of the touch driving transistor 610 and the control end of the emission control transistor 800, the touch driving transistor 610 is turned off and the emission control transistor 800 is turned on, so that the touch driving signal is not transmitted to the first electrode 210 and the driving current signal for driving emission can be transmitted to the first electrode 210, and the light-emitting display operation of the light-emitting unit EL is more stable.

[0192] In some optional embodiments, the pixel circuit further includes a touch drive signal line 620, a first end of the touch drive transistor 610 is connected to the touch drive signal line 620, and a second end of the touch drive transistor 610 is connected to the light-emitting unit EL, and the touch drive signal line 620 is used to transmit a touch drive signal to the light-emitting unit EL through the touch drive transistor 610.

[0193] In these optional embodiments, by providing a touch drive signal line 620 carrying a touch drive signal and connected to the touch drive transistor 610, the touch drive signal line 620 can carry a touch drive signal to the first electrode 210 through the touch drive transistor 610, so that the first electrode 210 can also be multiplexed as a touch drive electrode in the display module. Optionally, the second electrode 510 in the light-emitting unit EL can be multiplexed as a touch sensing electrode in the display module.

[0194] Optionally, the touch driving signal line 620 transmits a reset signal to the light-emitting unit EL through the touch driving transistor 610, and when any one or more sub-pixels in the display module enter a non-light-emitting period, the touch driving signal line 620 can not only transmit a touch driving signal to the first electrode 210 through the touch driving transistor 610, but also transmit a reset signal to the first electrode 210 of the one or more sub-pixels through the touch driving transistor 610, thereby realizing resetting the voltage of the first electrode 210.

[0195] In some alternative embodiments, in the non-light-emitting period, the touch driving transistor 610 is turned on to transmit a touch driving signal or a reset signal to the light-emitting unit EL. In the non-light-emitting period, that is, when the light-emitting control signal controls the light-emitting control transistor 800 to be off so that the light-emitting unit EL does not emit light, the light-emitting control signal can control the touch driving transistor 610 to be on, so that the touch driving transistor 610 can transmit a touch driving signal or a reset signal to the light-emitting unit EL, in the non-light-emitting period, the light-emitting unit EL is only affected by the touch driving signal or the reset signal, and is not easily interfered with by the driving current signal for driving light emission.

[0196] FIG. 16 is a schematic structural diagram of a pixel circuit according to another embodiment of the present invention.

[0197] As shown in FIG. 16, in some optional embodiments, the pixel circuit further includes a power supply voltage signal line VDD and a driving transistor 900, and the light-emitting control transistor 800 includes a first control transistor T1 and a second control transistor T2, where the light-emitting control signal line EM is connected to the control ends of the first control transistor T1 and the second control transistor T2, a first end of the second control transistor T2 is connected to the power supply voltage signal line VDD, a second end of the second control transistor T2 is connected to a first end of the driving transistor 900, a first end of the first control transistor T1 is connected to the second end of the driving transistor 900, and a second end of the first control transistor T1 is connected to the light-emitting unit EL.

[0198] Optionally, the pixel circuit further includes an initialization module P4, a memory module P1, a data writing module P2 and a compensation module P3, in which the initialization module P4 is connected to the control end of the driving transistor 900 and is used for initializing the control end of the driving transistor 900; the memory module P1 is connected to the control end of the driving transistor 900 and is used for maintaining the potential of the control end of the driving transistor 900; the data writing module P2 is connected to the data signal end VDATA, the first scanning signal end S1 and the first end of the driving transistor 900, the data writing module P2 is used for transmitting a data signal to the driving transistor 900, and the driving transistor 900 is used for generating a driving current signal according to the data signal to drive the light emission of the light-emitting unit EL; the compensation module P3 is connected to the memory module P1, the second end of the driving transistor 900 and the first scanning signal end S1, and the compensation module P3 is used for performing threshold compensation for the driving transistor 900.

[0199] Optionally, the initialization module P4 includes an initialization transistor T5, the memory module P1 includes a first capacitor C1, the data write module P2 includes a data write transistor T3, the compensation module P3 includes a compensation transistor T4, the control end of the initialization transistor T5 is connected to the second scanning signal end S2, the first end of the initialization transistor T5 is connected to the initialization signal end VREF, the second end of the initialization transistor T5 is connected to the control end of the driving transistor 900, the control end of the data write transistor T3 is connected to the first scanning signal end S1, the first end of the data write transistor T3 is connected to the data signal end VDATA, the second end of the data write transistor T3 is connected to the first end of the driving transistor 900, the control end of the compensation transistor T4 is connected to the first scanning signal end S1, the first end of the compensation transistor T4 is connected to the second end of the driving transistor 900, the first end of the first capacitor C1 is connected to the power supply voltage signal line VDD, and the second end of the first capacitor C1 is connected to the control end of the driving transistor 900 and the second end of the compensation transistor T4.

[0200] Optionally, the non-light emitting period may include an initialization phase and a data writing phase, in which in the initialization phase, the initialization module P4 is turned on, and the initialization module P4 initializes the control end of the driving transistor 900; in the data writing phase, the data writing module P2 and the compensation module P3 are turned on, and the data signal provided by the data signal end VDATA is transmitted to the control end of the driving transistor 900 via the data writing module P2, the driving transistor 900 and the compensation module P3.

[0201] Optionally, during the light-emitting period, the light-emitting control signal controls the first control transistor T1 and the second control transistor T2 to be on, and the driving transistor 900 supplies a driving current signal to the light-emitting unit EL via the first control transistor T1 to make the light-emitting unit EL emit light.

[0202] In these optional embodiments, the initialization module P4 is connected to the second scanning signal end S2, and the second scanning signal end S2 is used to control the initialization module P4 to be turned on or off, thereby controlling the initialization module P4 to transmit an initialization signal to the driving transistor 900 to initialize the control end of the driving transistor 900. Optionally, the initialization signal and the reset signal transmitted by the touch driving signal line 620 can be similar signals, and both can perform a certain initialization or reset function for the device. Specifically, the second scanning signal end S2 is used to provide a second scanning signal, and the second scanning signal includes an enable signal for controlling the initialization transistor T5 of the initialization module P4 to be turned on and a non-enable signal for controlling the initialization transistor T5 to be turned off. During the initialization stage in the process in which the pixel circuit drives the light-emitting unit EL of the sub-pixel in the display module, the enable signal provided by the second scanning signal can turn on the initialization transistor T5, so that the initialization module P4 can transmit an initialization signal to the control end of the driving transistor 900 to initialize the control end of the driving transistor 900.

[0203] The data writing module P2 is connected to the data signal end VDATA, the first scanning signal end S1 and the first end of the driving transistor 900, and the compensation module P3 is connected to the control end of the driving transistor 900, the second end of the driving transistor 900 and the first scanning signal end S1. Specifically, the data signal end VDATA is used to provide a data signal. The first scanning signal end S1 is used to provide a first scanning signal, which includes an enable signal for turning on the data writing transistor T3 of the data writing module P2 and the compensation transistor T4 of the compensation module P3, and a non-enable signal for turning off the data writing transistor T3 and the compensation transistor T4. During a data writing stage in the process in which the pixel circuit drives the light-emitting unit EL of the sub-pixel in the display module, the non-enable signal provided by the second scanning signal can turn off the initialization transistor T5, and the enable signal provided by the first scanning signal can turn on the data writing transistor T3 and the compensation transistor T4, so that the data signal provided from the data signal end VDATA is transmitted to the control end of the driving transistor 900 via the data writing module P5, the driving transistor 900 and the compensation module P3.

[0204] The memory module P1 may also have the role of storing electrical energy, and during the light-emitting period in the process of the pixel circuit driving the light-emitting unit EL of the sub-pixel in the display module, the non-enable signal provided by the second scanning signal can turn off the initialization transistor T5, and the non-enable signal provided by the first scanning signal can turn off the data writing transistor T3 and the compensation transistor T4, in this case, the memory module P1 can better maintain the potential of the control end of the driving transistor 900.

[0205] Optionally, during a non-light-emitting period, an initialization phase may occur before a data writing phase, thereby facilitating the data writing module P2 to write a data signal to the control end of the driving transistor 900 during the data writing phase, and facilitating the compensation module P3 to use the data signal to charge the memory module P1.

[0206] Optionally, in the initialization stage, data writing stage, the light emitting control signal controls the touch driving transistor 610 to transmit a touch driving signal or a reset signal to the light emitting unit EL, that is, during the entire non-light emitting period, the touch driving transistors 610 can both remain on to transmit a touch driving signal or a reset signal to the light emitting unit EL, thereby improving the time length during which the first electrode 210 in the light emitting unit EL is involved in the touch operation, or the reset signal has a good effect time on the light emitting unit EL to better reset the light emitting unit EL.

[0207] In the embodiments of the present application, the pixel circuit can be driven by using a driving method according to any one of the embodiments of the third aspect. For example, the timing of the touch driving signal or reset signal transmitted by the touch driving transistor 610 to the light-emitting unit EL can refer to the driving method according to any one of the embodiments of the third aspect, and the description thereof will be omitted here.

[0208] FIG. 17 is a schematic structural diagram of a pixel circuit according to another embodiment of the present invention.

[0209] 17, optionally, the compensation transistor T4 includes a first sub-transistor T4a and a second sub-transistor T4b, the control end of the first sub-transistor T4a and the control end of the second sub-transistor T4b are both connected to the first scanning signal end S1, the first end of the first sub-transistor T4a is connected to the second end of the driving transistor 900, the second end of the first sub-transistor T4a is connected to the first end of the second sub-transistor T4b, and the second end of the second sub-transistor T4b is connected to the second end of the first capacitor C1 and the control end of the driving transistor 900. By providing the first sub-transistor T4a and the second sub-transistor T4b, the data signal is less likely to leak in the compensation module P3, so as to improve the operation reliability of the pixel circuit.

[0210] Optionally, the initialization transistor T5 includes a third sub-transistor T5a and a fourth sub-transistor T5b, the control end of the third sub-transistor T5a and the control end of the fourth sub-transistor T5b are both connected to the second scanning signal end S2, the first end of the third sub-transistor T5a is connected to the initialization signal end VREF, the second end of the third sub-transistor T5a is connected to the first end of the fourth sub-transistor T5b, and the second end of the fourth sub-transistor T5b is connected to the control end of the driving transistor 900. The provision of the third sub-transistor T5a and the fourth sub-transistor T5b makes it difficult for the initialization signal to leak in the initialization module P4, so as to improve the operation reliability of the pixel circuit.

[0211] With reference to the above examples of the present application, these examples do not describe all technical details in detail, and the present invention is not limited to only specific examples. As is apparent from the above, many modifications and variations are possible. In this specification, these examples are selected and specifically described in order to better understand the principles and practical applications of the present application, so that those skilled in the art can make good use of the present application and modifications based on the present application. The present application is limited only by all claims and their equivalents.

Claims

1. An array substrate; a light-emitting unit provided on one side of the array substrate, the light-emitting unit including a first electrode located in a first electrode layer, a second electrode located in a second electrode layer, and a light-emitting portion located in a light-emitting functional layer, the second electrode being located on a side of the first electrode that is away from the array substrate, and the light-emitting portion being located between the second electrode and the first electrode; a pixel definition layer provided on one side of the array substrate, the pixel definition layer including a pixel restricting portion and a pixel opening restricted by the pixel restricting portion, and at least a part of the first electrode being exposed from the pixel opening; One of the first electrode and the second electrode is used to obtain a touch drive signal, and the other of the first electrode and the second electrode is used to output a touch sensing signal. A display module comprising:

2. At least a part of the first electrodes and the second electrodes are provided so as to be orthogonally projected on the array substrate and to be misaligned with each other; each of the first electrodes includes a first portion exposed from the pixel opening and a second portion located between the pixel restricting portion and the array substrate, and an orthogonal projection of at least a part of the second portion on the array substrate and an orthogonal projection of the second electrode on the array substrate are misaligned; The second portion is located on at least one side of the first portion in the first direction and / or the second direction.

2. The display module according to claim 1.

3. The display module includes a touch drive signal line and a touch drive transistor connected to the first electrode, the touch drive signal line is used to transmit a touch drive signal to the first electrode through the touch drive transistor, the touch drive transistor includes a first source and a first drain, one of the first source and the first drain is connected to the first electrode, and the other of the first source and the first drain is connected to the touch drive signal line.

2. The display module according to claim 1.

4. the touch drive transistor further includes a first gate, the array substrate includes a first insulating layer, a second insulating layer located on a side of the first insulating layer facing the first electrode layer, and a third insulating layer located on a side of the second insulating layer away from the first insulating layer, the first gate is provided on a side of the first insulating layer away from the second insulating layer, the touch drive signal line is provided between the first insulating layer and the second insulating layer, and the first source and the first drain are provided between the second insulating layer and the third insulating layer, the first electrodes are spaced apart in a first direction and a second direction, and the touch drive transistors corresponding to two first electrodes adjacent to each other in the first direction are connected to the same touch drive signal line; the number of the touch drive signal lines is at least two, the at least two touch drive signal lines are spaced apart in the second direction, and the touch drive transistors corresponding to two first electrodes adjacent in the second direction are connected to different touch drive signal lines; 4. The display module according to claim 3.

5. The light-emitting unit is configured not to emit light when the touch driving transistor connected to the first electrode of the light-emitting unit is turned on; The touch drive transistor is configured to be turned off when the light emitting unit corresponding to the first electrode connected to the touch drive transistor emits light.

4. The display module according to claim 3.

6. The display module further includes a driving transistor and a light-emitting control transistor, the driving transistor and the light-emitting control transistor are connected between a power supply voltage signal line of the display module and the light-emitting unit, the driving transistor is used to drive the light emission of the light-emitting unit, the light-emitting control transistor includes a second source and a second drain, one of the second source and the second drain is connected to the first electrode, and the other of the second source and the second drain is connected to the driving transistor, and the touch driving transistor is configured to be turned on when the light-emitting control transistor is turned off; the display module further includes a light emission control signal line, the touch driving transistor further includes a first gate, the light emission control transistor further includes a second gate, the light emission control signal line is connected to the first gate and the second gate to transmit a light emission control signal to the touch driving transistor and the light emission control transistor, one of the touch driving transistor and the light emission control transistor is an N-type transistor, and the other is a P-type transistor; 4. The display module according to claim 3.

7. The display module further includes a touch control module and a touch control line, the touch control module is connected to the touch drive signal line through the touch control line, and the touch control module is used to transmit a touch drive signal to the touch drive transistor through the touch control line and the touch drive signal line; the number of the touch control lines is equal to the number of the light-emitting control signal lines; the touch drive signal line is further used to transmit a reset signal to the first electrode via the touch drive transistor to reset the first electrode; 7. A display module according to claim 6.

8. At least two of the second electrodes are spaced apart in a first direction and shaped to extend along a second direction, the first direction intersecting the second direction.

2. The display module according to claim 1.

9. The display module includes a touch sensing signal line connected to the second electrode, the touch sensing signal line being used to receive a touch sensing signal output from the second electrode; When the light emitting unit emits light, the touch sensing signal line is further used to transmit a negative power supply voltage signal to the second electrode.

2. The display module according to claim 1.

10. The display module further includes an isolation structure spaced apart in at least two first directions and shaped to extend along a second direction, the material of the isolation structure includes a conductive material, and the second electrodes are spaced apart in the first direction and the second direction, and the second electrodes adjacent in the second direction are electrically connected to each other via the isolation structure; the isolation structure is provided to surround at least a portion of the pixel opening, The display module includes a touch sensing signal line electrically connected to the isolation structure, the touch sensing signal line being used to receive a touch sensing signal output from the second electrode through the isolation structure.

2. The display module according to claim 1.

11. When the light emitting unit emits light, the touch sensing signal line is further used to transmit a negative power supply voltage signal to the second electrode; the separation structure includes a first separation portion and a second separation portion located on a side of the first separation portion away from the array substrate, the second separation portion being provided to protrude from the first separation portion toward the pixel opening; a material of the first isolation portion includes a conductive material, and the second electrodes adjacent in the second direction are connected via the first isolation portion; the isolation structure has a lattice shape, and some of the second electrodes adjacent to each other in the first direction are connected via the isolation structure; the isolation structure is provided on a side of the pixel restricting portion that is away from the array substrate, or an accommodation groove is opened in the pixel restricting portion, and at least a part of the isolation structure is located in the accommodation groove.

11. A display module according to claim 10.

12. The display module further includes a touch control module, the touch sensing signal line is connected to the touch control module, and the touch control module is configured to obtain a touch sensing signal fed back from the second electrode through the touch sensing signal line when the light-emitting unit does not emit light; 12. A display module according to any one of claims 9 to 11.

13. The touch control module is configured to transmit a negative power supply voltage signal to the second electrode through the touch sensing signal line when the light emitting unit emits light; 13. A display module as claimed in claim 12.

14. A method for driving a display module according to any one of claims 1 to 11, comprising the steps of: Each of the light-emitting units has a display cycle, and the display cycle includes at least one light-emitting period and at least one non-light-emitting period, and the driving method includes: transmitting a driving current signal to the first electrode of the light-emitting unit during the light-emitting period of the light-emitting unit; transmitting a touch driving signal or a reset signal to the first electrode of the light-emitting unit during the non-light-emitting period of the light-emitting unit; A driving method comprising:

15. The display cycle includes at least one non-light-emitting period, and the step of transmitting a touch driving signal or a reset signal to the first electrode of the light-emitting unit in the non-light-emitting period of the light-emitting unit includes: transmitting a reset signal to the first electrode of the light-emitting unit during the initial non-light-emitting period in the display cycle of the light-emitting unit; Alternatively, the step of transmitting a reset signal to the first electrode of the light-emitting unit in the first non-light-emitting period in the display cycle of the light-emitting unit includes: In the initial non-light-emitting period of the display cycle of the light-emitting unit, a reset signal and a touch driving signal are sequentially transmitted to the first electrode of the light-emitting unit; Alternatively, the display cycle includes at least two of the non-light-emitting periods, and the step of transmitting a touch driving signal or a reset signal to the first electrode of the light-emitting unit in the non-light-emitting period of the light-emitting unit includes: transmitting a touch drive signal to the first electrode of the light-emitting unit in the non-light-emitting period after the first non-light-emitting period in the display cycle of the light-emitting unit; 15. The driving method according to claim 14,

16. A light-emitting unit; a light-emitting control transistor connected to the light-emitting unit; a touch driving transistor connected to the light emitting unit; In a light emitting period, the touch driving transistor is turned off and the light emitting control transistor is turned on to control the light emission of the light emitting unit; in a non-light emitting period, the light emitting control transistor is turned off and the touch driving transistor is turned on to transmit a touch driving signal to the light emitting unit.

23. A pixel circuit comprising:

17. The pixel circuit further includes a touch drive signal line, a first end of the touch drive transistor is connected to the touch drive signal line, and a second end of the touch drive transistor is connected to the light emitting unit, and the touch drive signal line is used to transmit a touch drive signal to the light emitting unit through the touch drive transistor; The touch driving signal line is further used for transmitting a reset signal to the light emitting unit through the touch driving transistor; In a non-light emitting period, the touch driving transistor is turned on to transmit the touch driving signal or the reset signal to the light emitting unit; 17. The pixel circuit of claim 16.

18. The pixel circuit further includes a light emission control signal line, the light emission control signal line is connected to a control end of the light emission control transistor and a control end of the touch drive transistor, and the light emission control signal line is used to transmit a light emission control signal to the light emission control transistor and the touch drive transistor; One of the light emission control transistor and the touch driving transistor is an N-type transistor, and the other is a P-type transistor; the pixel circuit further includes a power supply voltage signal line and a drive transistor, the light emission control transistor includes a first control transistor and a second control transistor, the light emitting control signal line is connected to the control end of the first control transistor and the control end of the second control transistor, the first end of the second control transistor is connected to the power supply voltage signal line, the second end of the second control transistor is connected to the first end of the driving transistor, the first end of the first control transistor is connected to the second end of the driving transistor, and the second end of the first control transistor is connected to the light emitting unit; In a light emitting period, the light emitting control signal controls the first control transistor and the second control transistor to be on, and the driving transistor supplies a driving current signal to the light emitting unit via the first control transistor to cause the light emitting unit to emit light.

17. The pixel circuit of claim 16.

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