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

Abstract

The invention discloses a display module, a display device, a driving method of the display module and a pixel circuit. The display module comprises an array substrate; the light-emitting unit is arranged on one side of the array substrate and comprises a first electrode located on the first electrode layer, a second electrode located on the second electrode layer and a light-emitting part located on the light-emitting functional layer, the second electrode is located on the side, away from the array substrate, of the first electrode, and the light-emitting part is located between the second electrode and the first electrode; the pixel defining layer is arranged on one side of the array substrate, the pixel defining layer comprises a pixel limiting part and a pixel opening limited by the pixel limiting part, at least part of the first electrode is exposed out of the pixel opening, one of the first electrode and the second electrode is used for accessing a touch driving signal, and the other one of the first electrode and the second electrode is used for accessing a touch driving signal. The other one of the first electrode and the second electrode is used for outputting a touch sensing signal. The display module provided by the embodiment of the invention has relatively good display performance.

Description

Technical Field

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

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

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

[0004] The embodiments of the present application provide a display module, a display device, a driving method of the display module, and a pixel circuit, aiming to improve the performance of the display module.

[0005] An embodiment of the first aspect of the present application provides a display module, comprising: an array substrate; a light-emitting unit, which is arranged on one side of the array substrate and includes 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, wherein the second electrode is located on a side of the first electrode away from the array substrate, and the light-emitting portion is located between the second electrode and the first electrode; a pixel definition layer, which is arranged on one side of the array substrate, the pixel definition layer includes a pixel defining portion and a pixel opening defined by the pixel defining portion, and at least a portion of the first electrode is exposed from the pixel opening, wherein one of the first electrode and the second electrode is used to receive a touch drive signal, and the other of the first electrode and the second electrode is used to output a touch sensing signal.

[0006] According to an implementation of the first aspect of the present application, at least a portion of the orthographic projections of the first electrodes on the array substrate are offset from the orthographic projections of the second electrodes on the array substrate.

[0007] According to any of the aforementioned 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 defining portion and the array substrate, and the orthographic projection of at least part of the second portion on the array substrate is offset from the orthographic projection of the second electrode on the array substrate.

[0008] According to any of the aforementioned implementations 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 aforementioned 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 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.

[0010] According to any of the foregoing embodiments of the first aspect of the present application, the touch driving transistor also includes a first gate, the array substrate includes a first insulating layer, a second insulating layer located on the side of the first insulating layer facing the first electrode layer, and a third insulating layer located on the side of the second insulating layer away from the first insulating layer, the first gate is arranged on the side of the first insulating layer away from the second insulating layer, the touch driving signal line is arranged between the first insulating layer and the second insulating layer, and the first source and the first drain are arranged between the second insulating layer and the third insulating layer.

[0011] According to any of the aforementioned implementations of the first aspect of the present application, the first electrodes are spaced apart in the first direction and the second direction, and the touch driving transistors corresponding to two adjacent first electrodes in the first direction are connected to the same touch driving signal line.

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

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

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

[0015] According to any of the foregoing embodiments of the first aspect of the present application, the display module also includes a driving transistor and a light-emitting control transistor, the driving transistor and the light-emitting control transistor are connected between the power supply voltage signal line of the display module and the light-emitting unit, the driving transistor is used to drive the light-emitting unit to emit light, 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 disconnected.

[0016] According to any of the aforementioned embodiments of the first aspect of the present application, the display module also includes a light-emitting control signal line, the touch driving transistor also includes a first gate, the light-emitting control transistor also includes a second gate, the light-emitting control signal line is connected to the first gate and the second gate to transmit a light-emitting control signal to the touch driving transistor and the light-emitting control transistor, wherein one of the touch driving transistor and the light-emitting control transistor is an N-type transistor and the other is a P-type transistor.

[0017] According to any of the aforementioned embodiments of the first aspect of the present application, the display module also 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 the 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 aforementioned implementations of the first aspect of the present application, the number of touch control lines is the same as the number of light emitting control signal lines.

[0019] According to any of the aforementioned implementations 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 to reset the first electrode.

[0020] According to any of the aforementioned embodiments of the first aspect of the present application, at least two second electrodes are spaced apart in the first direction and extended along the second direction, wherein the first direction intersects with the second direction.

[0021] According to any of the aforementioned implementations 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 the touch sensing signal output by the second electrode.

[0022] According to any of the aforementioned implementations 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.

[0023] According to any of the aforementioned embodiments of the first aspect of the present application, the display module also includes at least two isolation structures that are spaced apart in the first direction and extended along the second direction, the material of the isolation structure includes a conductive material, the second electrodes are arranged in different pixel openings, and the second electrodes are spaced apart in the first direction and the second direction, and the adjacent second electrodes in the second direction are electrically connected to each other through the isolation structure.

[0024] According to any of the aforementioned implementations of the first aspect of the present application, the isolation structure is disposed around at least a portion of the pixel opening.

[0025] According to any of the aforementioned implementations 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 the touch sensing signal output by the second electrode through the isolation structure.

[0026] According to any of the aforementioned implementations 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 aforementioned embodiments of the first aspect of the present application, the isolation structure has a first end and a second end relative to each other in the thickness direction of the display module, the second end is located on the side of the first end facing away from the array substrate, and the orthographic projection of the first end on the array substrate is located within the orthographic projection of the second end on the array substrate.

[0028] According to any of the aforementioned implementations of the first aspect of the present application, in a direction away from the array substrate, the distance between the surfaces of the isolation structure facing the pixel openings on both sides of the isolation structure gradually increases.

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

[0030] According to any of the aforementioned embodiments of the first aspect of the present application, the material of the first isolation portion includes a conductive material, and the second electrodes adjacent to each other in the second direction are connected via the first isolation portion.

[0031] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation structure is in a grid shape, and some of the second electrodes adjacent to each other in the first direction are connected via the isolation structure.

[0032] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation structure is arranged on a side of the pixel defining portion facing away from the array substrate, or the pixel defining portion is provided with a receiving groove, and at least part of the isolation structure is located in the receiving groove.

[0033] According to any of the aforementioned embodiments of the first aspect of the present application, the display module also 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 the touch sensing signal fed back by the second electrode through the touch sensing signal line when the light-emitting unit does not emit light.

[0034] According to any of the aforementioned implementations 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, which includes a display module according to any of the above embodiments.

[0036] An embodiment of a third aspect of the present application provides a method for driving a display module of any of the above embodiments, wherein each light-emitting unit has a display period, and the display period includes at least one light-emitting phase and at least one non-light-emitting phase, and the driving method includes:

[0037] In the light emitting stage of the light emitting unit, a driving current signal is input to the first electrode of the light emitting unit;

[0038] In the non-light-emitting phase of the light-emitting unit, a touch driving signal or a reset signal is transmitted to the first electrode of the light-emitting unit.

[0039] According to an implementation of the third aspect of the present application, the display cycle includes at least one non-luminous phase, and in the non-luminous phase of the light-emitting unit, the step of transmitting a touch drive signal or a reset signal to the first electrode of the light-emitting unit further includes:

[0040] In a first non-light-emitting phase in a display period of the light-emitting unit, a reset signal is transmitted to the first electrode of the light-emitting unit.

[0041] According to any of the aforementioned implementations of the third aspect of the present application, in the first non-luminescent phase in the display cycle of the light-emitting unit, the step of transmitting a reset signal to the first electrode of the light-emitting unit further includes:

[0042] In the first non-light-emitting phase 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.

[0043] According to any of the aforementioned implementations of the third aspect of the present application, the display period includes at least two non-luminescent phases, and in the non-luminescent phase of the light-emitting unit, the step of transmitting the touch drive signal or the reset signal to the first electrode of the light-emitting unit also includes:

[0044] In a non-light-emitting phase after the first non-light-emitting phase in a display cycle of the light-emitting unit, a touch driving signal is transmitted to the first electrode of the light-emitting unit.

[0045] According to any of the aforementioned embodiments of the third aspect of the present application, when the light-emitting unit is converted from a non-light-emitting stage to a light-emitting stage, the state of transmitting a reset signal to the first electrode of the light-emitting unit is converted to a state of stopping transmitting a reset signal to the first electrode of the light-emitting unit, or the state of transmitting a touch drive signal to the first electrode of the light-emitting unit is converted to a state of stopping transmitting a touch drive signal to the first electrode of the light-emitting unit.

[0046] According to any of the aforementioned implementations 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.

[0047] According to any of the aforementioned implementations of the third aspect of the present application, the touch driving signal is a pulse signal.

[0048] An embodiment of the 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 stage, the touch-driving transistor is disconnected, and the light-emitting control transistor is turned on to control the light-emitting unit to emit light, and in a non-light-emitting stage, the light-emitting control transistor is disconnected, and the touch-driving transistor is turned on and transmits a touch-driving signal to the light-emitting unit.

[0049] According to an implementation of the fourth aspect of the present application, the pixel circuit also includes a touch drive signal line, the first end of the touch drive transistor is connected to the touch drive signal line, the 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.

[0050] According to any of the aforementioned implementations of the fourth aspect of the present application, the touch drive signal line is also used to transmit a reset signal to the light-emitting unit through the touch drive transistor.

[0051] According to any of the aforementioned implementations of the fourth aspect of the present application, in the non-luminescent stage, the touch driving transistor is turned on and transmits a touch driving signal or a reset signal to the light-emitting unit.

[0052] According to any of the aforementioned embodiments of the fourth aspect of the present application, the pixel circuit also includes a light-emitting control signal line, which is connected to the control end of the light-emitting control transistor and the control end of the touch-control driving transistor, and the light-emitting control signal line is used to transmit the light-emitting control signal to the light-emitting control transistor and the touch-control driving transistor.

[0053] According to any of the aforementioned embodiments of the fourth aspect of the present application, one of the light emitting control transistor and the touch driving transistor is an N-type transistor and the other is a P-type transistor.

[0054] According to any of the aforementioned embodiments of the fourth aspect of the present application, the pixel circuit also 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, wherein the light-emitting control signal line is connected to the control ends of the first control transistor and 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.

[0055] According to any of the aforementioned embodiments of the fourth aspect of the present application, in the light-emitting stage, the light-emitting control signal controls the first control transistor and the second control transistor to be turned on, and the driving transistor provides a driving current signal to the light-emitting unit through the first control transistor to make the light-emitting unit emit light.

[0056] In a display module provided in an embodiment of the present application, the display module includes an array substrate, a light-emitting unit, and a pixel definition layer. The pixel definition layer includes a pixel defining portion and a pixel opening defined by the pixel defining portion, at least part of the light-emitting unit may be located in the pixel opening, and the pixel defining portion may be used to divide the sub-pixels of the display module.

[0057] The light-emitting unit includes a first electrode located in the first electrode layer, a second electrode located in the second electrode layer, and a light-emitting portion located in the light-emitting functional layer. The second electrode is located on the side of the first electrode away from the array substrate, and the light-emitting portion is located between the second electrode and the first electrode. The first electrode, the light-emitting portion, and the second electrode stacked on each other can be used to realize the light-emitting display of the display module.

[0058] By setting one of the first electrode and the second electrode for receiving the touch driving signal and the other of the first electrode and the second electrode for outputting the touch sensing signal, the first electrode and the second electrode can not only serve as pixel electrodes of the display module to participate in the luminous display of the display module, but also can be reused as touch electrodes of the display module to realize the touch function of the display module, so that there is no need to set an additional layer structure in the display module to arrange the touch electrodes, thereby improving the performance of the display module, for example, allowing the display module to have a smaller thickness. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0060] Figure 1 is a schematic diagram of a local structure of a pixel definition layer in an embodiment of the present application;

[0061] Figure 2 is a partial cross-sectional view of a display module according to an embodiment of the present application;

[0062] Figure 3 is a partial structural schematic diagram of a display module according to an embodiment of the present application;

[0063] Figure 4 is a partial structural schematic diagram of a display module according to another embodiment of the present application;

[0064] Figure 5 is a partial structural schematic diagram of a display module according to yet another embodiment of the present application;

[0065] Figure 6 is a partial cross-sectional view of a display module according to another embodiment of the present application;

[0066] Figure 7 is a partial structural schematic diagram of a display module according to another embodiment of the present application;

[0067] Figure 8 This is a partial cross-sectional view of a display module of another embodiment of the present application.

[0068] Fig. 9 is a partial cross-sectional view of a display module according to another embodiment of the present application;

[0069] Fig.10 is a partial cross-sectional view of a display module according to another embodiment of the present application;

[0070] Fig.11 is a partial cross-sectional view of a display module according to another embodiment of the present application;

[0071] Fig.12 This is a schematic flow chart of a method for driving a display module provided in an embodiment of the present application;

[0072] Fig.13 is a schematic timing diagram of a driving method of a display module provided in an embodiment of the present application;

[0073] Fig.14 is a schematic timing diagram of a display module driving method provided by another embodiment of the present application

[0074] Fig.15 is a structural schematic diagram of a pixel circuit provided in an embodiment of the present application;

[0075] Fig.16 is a structural schematic diagram of a pixel circuit provided by another embodiment of the present application;

[0076] Fig.17 It is a structural schematic diagram of a pixel circuit provided in another embodiment of the present application.

[0077] Description of reference numerals:

[0078] 10. Display module; 10a. Touch control module; 10b. Touch control line;

[0079] 100, array substrate; 110, substrate; 120, first insulating layer; 130, second insulating layer; 140, third insulating layer; 150, fourth insulating layer; 160, source-drain conductive part;

[0080] 200, first electrode layer; 210, first electrode; 211, first part; 212, second part;

[0081] 310, isolation structure; 310a, first end; 310b, second end; 311, first isolation portion; 312, second isolation portion; 320, pixel definition layer; 321, pixel defining portion; 321a, receiving groove; 322, pixel opening;

[0082] 400, light-emitting functional layer; 410, light-emitting portion;

[0083] 500, second electrode layer; 510, second electrode;

[0084] 610, touch driving transistor; 611, first gate; 612, first source; 613, first drain; 614, first active layer; 620, touch driving signal line;

[0085] 700, touch sensing signal line;

[0086] 800, light emitting control transistor; 810, second gate; 820, second source; 830, second drain; 840, second active layer;

[0087] 900, driving transistor;

[0088] VDD, power supply voltage signal line;

[0089] EM, light-emitting control signal line;

[0090] EL, light emitting unit;

[0091] VDATA, data signal terminal;

[0092] VREF, initialization signal terminal;

[0093] S1, a first scanning signal terminal;

[0094] S2, second scanning signal terminal;

[0095] T1, a first control transistor; T2, a second control transistor;

[0096] P1, storage module; C1, first capacitor;

[0097] P2, data writing module; T3, data writing transistor;

[0098] P3, compensation module; T4, compensation transistor; T4a, first sub-transistor; T4b, second sub-transistor;

[0099] P4, initialization module; T5, initialization transistor; T5a, third sub-transistor; T5b, fourth sub-transistor;

[0100] X, thickness direction;

[0101] Y, first direction;

[0102] Z, second direction. DETAILED DESCRIPTION

[0103] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to 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 only to provide a better understanding of the present application by illustrating the examples of the present application.

[0104] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0105] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0106] Organic light-emitting diodes and flat-panel display devices based on technologies such as light-emitting diodes have the advantages of high image quality, power saving, thin body and wide application range, and are widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc., becoming the mainstream of display devices. However, the performance of current OLED display products needs to be improved.

[0107] To solve the above problems, the embodiments of the present application provide a display module, a display device, a driving method for a display module and a pixel circuit. The following will describe the various embodiments of the display module, the display device, the driving method for a display module and the pixel circuit in conjunction with the accompanying drawings.

[0108] Figure 1 is a schematic diagram of a partial structure of a pixel definition layer 320 according to an embodiment of the present application. Figure 2 It is a partial cross-sectional view of a display module 10 provided in an embodiment of the present application, wherein 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, wherein the first direction Y, the second direction Z and the thickness direction X intersect each other.

[0109] In order to more clearly display the structure of the display module 10, in the relevant local cross-sectional views of the display module 10, the touch driving transistor 610 and the light emitting control transistor 800 connected to part of the first electrode 210 are not reflected, that is, only part of the touch driving transistor 610 and the light emitting control transistor 800 are reflected. Therefore, the relevant drawings do not limit the actual arrangement quantity and actual arrangement shape of the touch driving transistor 610 and the light emitting control transistor 800 in the actual product.

[0110] An embodiment of the present application provides a display module 10 , which may be an organic light emitting diode (OLED) display module 10 .

[0111] like Figure 1 and Figure 2 As shown, an embodiment of the first aspect of the present application provides a display module 10, including: an array substrate 100; a light-emitting unit EL, which is arranged on one side of the array substrate 100 and 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 portion 410 located on the light-emitting function layer 400, the second electrode 510 is located on the side of the first electrode 210 away from the array substrate 100, and the light-emitting portion 410 is located between the second electrode 510 and the first electrode 210; a pixel definition layer 320, which is arranged on one side of the array substrate 100, the pixel definition layer 320 includes a pixel defining portion 321 and a pixel opening 322 defined by the pixel defining portion 321, and at least a portion of the first electrode 210 is exposed from the pixel opening 322, wherein 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.

[0112] In a display module 10 provided in an embodiment of the present application, the display module 10 includes an array substrate 100, a light-emitting unit EL, and a pixel definition layer 320. The pixel definition layer 320 includes a pixel defining portion 321 and a pixel opening 322 defined by the pixel defining portion 321, at least part of the light-emitting unit EL may be located in the pixel opening 322, and the pixel defining portion 321 may be used to divide the sub-pixels of the display module 10.

[0113] The light-emitting unit EL includes a first electrode 210 located in the first electrode layer 200, a second electrode 510 located in the second electrode layer 500, and a light-emitting portion 410 located in the light-emitting functional layer 400. The second electrode 510 is located on the side of the first electrode 210 away from the array substrate 100, and the light-emitting portion 410 is located between the second electrode 510 and the first electrode 210. The stacked first electrode 210, the light-emitting portion 410, and the second electrode 510 can be used to realize the light-emitting display of the display module 10.

[0114] By setting one of the first electrode 210 and the second electrode 510 for receiving a touch driving signal and the other of the first electrode 210 and the second electrode 510 for outputting a touch sensing signal, the first electrode 210 and the second electrode 510 can not only serve as pixel electrodes of the display module 10 to participate in the luminous display of the display module 10, but also can be reused as touch electrodes of the display module 10 to realize the touch function of the display module 10, so that there is no need to set an additional layer structure in the display module 10 to arrange the touch electrodes, so that the display module 10 can have a smaller thickness.

[0115] 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).

[0116] Optionally, the number of the first electrodes 210 and the second electrodes 510 may be at least two, and adjacent first electrodes 210 are arranged at intervals, and adjacent second electrodes 510 are arranged at intervals, so as to realize the touch function of the display module 10 .

[0117] 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, wherein one of the first electrode 210 and the second electrode 510 is used as an anode, and the other is used as a cathode to drive the light-emitting portion 410 to emit light. The embodiment of the present application is described by taking the first electrode 210 as the anode of the display module 10 and the second electrode 510 as the cathode of the display module 10 as an example.

[0118] like Figure 1 As shown, optionally, the pixel defining portion 321 may be in a grid shape, and the hollow area in the grid-shaped pixel defining portion 321 may be a pixel opening 322. Optionally, part of the pixel defining portion 321 may be extended along the first direction Y, and part of the pixel defining portion 321 may be extended along the second direction Z, so that the pixel defining portions 321 may be interwoven to form a mesh.

[0119] Among them, there are multiple ways to set the size and arrangement shape of each pixel opening 322. Optionally, the size and arrangement shape of each pixel opening 322 can be set according to the luminous color of the light-emitting portion 410 in the pixel opening 322. Optionally, the size and arrangement shape of each pixel opening 322 can also be set according to the pixel arrangement density requirements of the display module 10.

[0120] In some embodiments of the present application, the display module 10 may be a display module 10 that realizes touch positioning based on a 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 may be used as a touch driving electrode for excitation, and the other may be used as a touch sensing electrode for detection, and a capacitor may be formed between the first electrode 210 and the second electrode 510. This allows a user to press, touch or approach a certain position of the display module 10, so that the capacitance between the first electrode 210 and the second electrode 510 at the position may change, so that identification and positioning may be performed through the capacitance change, thereby realizing the touch function of the display module 10.

[0121] For example, the user can reduce the distance between the first electrode 210 and the second electrode 510 by pressing a certain position of the display module 10, so that the capacitance between the first electrode 210 and the second electrode 510 at the position increases. For another example, the user can make a conductor touch or approach a certain position of the display module 10 so that the conductor can affect the induced capacitance between the first electrode 210 and the second electrode 510, so that the induced capacitance between the first electrode 210 and the second electrode 510 at the position decreases.

[0122] For the convenience of description, the following embodiments are described by taking “the first electrode 210 as the touch driving electrode of the display module 10 , and the second electrode 510 as the touch sensing voltage of the display module 10 ” as an example.

[0123] like Figure 2 As shown, in some optional embodiments, the orthographic projection of at least part of the first electrode 210 on the array substrate 100 is staggered with the orthographic projection of the second electrode 510 on the array substrate 100 .

[0124] By setting the orthographic projection of at least part of the first electrode 210 on the array substrate 100 to be misaligned with the orthographic projection of the second electrode 510 on the array substrate 100, at least part of the first electrode 210 is not blocked or covered by the second electrode 510 in the thickness direction X of the display module 10, so that when the first electrode 210 and the second electrode 510 are used as touch electrodes, the interlaced part between the first electrode 210 and the second electrode 510 can form an inductive capacitor, so that when the conductor approaches the first electrode 210 and the second electrode 510, the inductive capacitor between the first electrode 210 and the second electrode 510 can be changed. For example, when the user's finger approaches the first electrode 210 and the second electrode 510, the inductive capacitor between the first electrode 210 and the second electrode 510 will be reduced.

[0125] In some embodiments of the present application, there are various methods for staggering the orthographic projection of at least part of the first electrode 210 on the array substrate 100 and the orthographic projection of the second electrode 510 on the array substrate 100 .

[0126] like Figure 2 As shown, 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 defining portion 321 and the array substrate 100, and the orthographic projection of at least a portion of the second portion 212 on the array substrate 100 is offset from the orthographic projection of the second electrode 510 on the array substrate 100.

[0127] 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.

[0128] In these optional embodiments, by arranging that the orthographic projection of at least part of the second portion 212 on the array substrate 100 is offset from the orthographic projection of the second electrode 510 on the array substrate 100, the first electrode 210 can have a larger layout area, thereby facilitating the staggered arrangement of the orthographic projection of the first electrode 210 on the array substrate 100 and the orthographic projection of the second electrode 510 on the array substrate 100, so that the second portion 212 can be used to form an inductive capacitor with the second electrode 510, and the first portion 211 under the light-emitting portion 410 can be used to participate in the light-emitting display of the display module 10.

[0129] Furthermore, the second portion 212 located under the pixel defining portion 321 can also be used to raise the height of the pixel defining portion 321, so as to enhance the effect of the pixel defining portion 321 in dividing the sub-pixels of the display module 10. The pixel defining portion 321 can better divide the sub-pixels of the display module 10 without setting an excessively high height, thereby enabling the display module 10 to have a smaller thickness.

[0130] Figure 3 It is a schematic diagram of a partial structure of a display module 10 according to an embodiment of the present application.

[0131] like Figure 2 and Figure 3 As shown, in some optional embodiments, the display module 10 includes a touch drive signal line 850 and a touch drive transistor 610 connected to the first electrode 210, the touch drive signal line 850 is used to transmit a touch drive signal to the first electrode 210 through the touch drive transistor 610, 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 850.

[0132] When the touch driving transistor 610 is turned on, that is, when the first source 612 and the first drain 613 are connected to each other, the touch driving signal line 850 can be electrically connected to the first electrode 210, so that the touch driving signal line 850 can transmit the touch driving signal to the first electrode 210, so that the inductive capacitance can be generated between the first electrode 210 and the second electrode 510, thereby realizing 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 disconnected from each other, the electrical connection between the touch driving signal line 850 and the first electrode 210 is also disconnected, 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 not easy to interfere with the driving current signal transmitted to the first electrode 210, so that the display module 10 can have better light-emitting display stability.

[0133] 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 substrate 110 located on a side of the first insulating layer 120 facing away from the second insulating layer 130.

[0134] Optionally, the touch driving transistor 610 may be disposed on the array substrate 100. Optionally, the touch driving transistor 610 may further include a first gate 611, which may be disposed on a side of the first insulating layer 120 away from the second insulating layer 130, the touch driving signal line 850 may be disposed between the first insulating layer 120 and the second insulating layer 130, and the first source 612 and the first drain 613 may be disposed between the second insulating layer 130 and the third insulating layer 140. Optionally, the touch driving transistor 610 may further include a first active layer 614, which may be disposed on a side of the first gate 611 facing the substrate 110.

[0135] In some optional embodiments, the first electrodes 210 are arranged at intervals in the first direction Y and the second direction Z, and the touch driving transistors 610 corresponding to two adjacent first electrodes 210 in the first direction Y are connected to the same touch driving signal line 850 .

[0136] Optionally, the touch driving transistor 610 corresponding to the first electrode 210 may refer to the touch driving transistor 610 connected to the first electrode 210. Optionally, the touch driving transistors 610 corresponding to two first electrodes 210 adjacent in the first direction Y are connected to the same touch driving signal line 850, which may refer to that the touch driving transistor 610 connected to one of the first electrodes 210 adjacent in the first direction Y and the touch driving transistor 610 connected to the other are both connected to the same touch driving signal line 850.

[0137] Optionally, the number of touch drive signal lines 850 may be at least two, and at least two touch drive signal lines 850 are spaced apart in the second direction Z, and the touch drive transistors 610 corresponding to two adjacent first electrodes 210 in the second direction Z are connected to different touch drive signal lines 850 .

[0138] Optionally, the touch driving transistors 610 corresponding to two adjacent first electrodes 210 in the second direction Z are respectively connected to different touch driving signal lines 850, which may mean that in the first electrodes 210 adjacent to each other in the second direction Z, the touch driving transistor 610 connected to one and the touch driving transistor 610 connected to the other are respectively connected to different touch driving signal lines 850.

[0139] Optionally, part of the touch driving signal line 850 may be extended along the first direction Y so as to be connected to the touch driving transistors 610 corresponding to two adjacent first electrodes 210 in the first direction Y, respectively.

[0140] Optionally, when two sub-pixels are adjacent in the first direction Y, the two sub-pixels may be considered to be located in the same row, and when two sub-pixels are adjacent in the second direction Z, the two sub-pixels may be considered to be located in the same column.

[0141] In these optional embodiments, by connecting the touch driving transistors 610 corresponding to two adjacent first electrodes 210 in the first direction Y to the same touch driving signal line 850, a single touch driving signal can simultaneously provide a touch driving signal to the first electrodes 210 of sub-pixels located in the same row in the first direction Y, so as to simultaneously control the touch functions of a row of sub-pixels, thereby facilitating touch control of the display module 10.

[0142] In some optional embodiments, the light-emitting unit EL is configured such that when the touch driving transistor 610 connected to the first electrode 210 of the light-emitting unit EL is turned on, the light-emitting unit EL does not emit light, so that when the light-emitting unit EL does not emit light, that is, when the first electrode 210 under 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 connected to each other, so that the driving current signal used for the light-emitting display is not easy to interfere with the touch driving signal, so that the display module 10 can have better touch stability.

[0143] Optionally, the touch driving transistor 610 is configured to be turned off when the light-emitting portion 410 corresponding to the first electrode 210 connected to the touch driving transistor 610 emits light, so that when the light-emitting portion 410 emits light, that is, when the first electrode 210 under the light-emitting portion 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 disconnected from each other, so that the touch driving signal is not easy to interfere with the driving current signal used for the light-emitting display, so that the display module 10 can have better light-emitting display stability.

[0144] 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 a side of the first electrode 210 connected to the touch driving transistor 610 away from the array substrate 100 in the thickness direction X.

[0145] like Figure 2As shown, in some optional embodiments, the display module 10 also includes a driving transistor and a light-emitting control transistor 800, which are connected between the power supply voltage signal line VDD of the display module and the light-emitting unit EL. The driving transistor is used to drive the light-emitting unit EL to emit light. The light-emitting 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 light-emitting control transistor 800 is disconnected.

[0146] In this embodiment, the light-emitting display of each sub-pixel in the display module 10 can be controlled by the light-emitting control transistor 800. When the second source 820 and the second drain 830 are turned on, the driving transistor can transmit a driving current signal to the first electrode 210 through the light-emitting control transistor 800 to realize the light-emitting display of the sub-pixel. When the second source 820 and the second drain 830 are disconnected, the sub-pixel may not emit light.

[0147] Optionally, the touch driving transistor 610 can be configured to be turned on when the second source 820 and the second drain 830 of the light emitting control transistor 800 which share the same first electrode 210 with the touch driving transistor 610 are disconnected, that is, in the touch driving transistor 610 and the light emitting control transistor 800 connected to the first electrode 210 in the same sub-pixel, when the second source 820 and the second drain 830 of the light emitting control transistor 800 are disconnected, the first source 612 and the first drain 613 of the touch driving transistor 610 are turned on to each other, so that when the sub-pixel is performing light-emitting display, the touch driving signal is not easy to interfere with the driving current signal, so that the display module 10 can have better light-emitting display stability.

[0148] Optionally, the light emission control transistor 800 may also be disposed on the array substrate 100. Optionally, the light emission control transistor 800 may further include a second gate 810, which may be disposed on a side of the first insulating layer 120 away from the second insulating layer 130, and a second source 820 and a second drain 830 may be disposed 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 disposed on a side of the second gate 810 facing the substrate 110.

[0149] Optionally, the array substrate 100 may further include a source-drain conductive portion 160 and a fourth insulating layer 150 located on the side of the third insulating layer 140 away from the second insulating layer 130. The source-drain conductive portion 160 may be disposed between the third insulating layer 140 and the fourth insulating layer 150, the first electrode 210 may be connected to the source-drain conductive portion 160 via a hole, the source-drain conductive portion 160 may be connected to the first source 612 or the first drain 613 of the touch driving transistor 610 via a hole, and the source-drain conductive portion 160 may be connected to the second source 820 or the second drain 830 of the light emitting control transistor 800 via a hole.

[0150] In some optional embodiments, the display module 10 also includes a light-emitting control signal line EM, which is connected to the first gate 611 and the second gate 810 to transmit a light-emitting control signal to the touch driving transistor 610 and the light-emitting control transistor 800, wherein one of the touch driving transistor 610 and the light-emitting control transistor 800 is an N-type transistor and the other is a P-type transistor.

[0151] The light-emitting control signal line EM can transmit the light-emitting control signal to the touch driving transistor 610 and the light-emitting control transistor 800 to realize the control of the on-off between the first source 612 and the first drain 613, and can also realize the control of the on-off between the second source 820 and the second drain 830 at the same time, thereby realizing the control of the touch function and the light-emitting display of the display module 10 at the same time.

[0152] By setting one of the touch driving transistor 610 and the light emitting control transistor 800 as an N-type transistor and the other as a P-type transistor, the conduction conditions of the touch driving transistor 610 and the light emitting control transistor 800 are different, that is, the light emitting control signals required when the touch driving transistor 610 and the light emitting control transistor 800 are turned on are different, so that the touch driving transistor 610 and the light emitting control transistor 800 are not easily turned on at the same time, thereby making it difficult for the touch driving signal and the driving current signal to interfere with each other.

[0153] Specifically, in the touch driving transistor 610 and the light emitting control transistor 800 connected to a sub-pixel, when the light emitting control signal line EM transmits a light emitting control signal of a certain level to the first gate 611 and the second gate 810, the conduction between the first source 612 and the first drain 613 and the disconnection between the second source 820 and the second drain 830 can be simultaneously achieved to realize the touch operation of the sub-pixel; or when the light emitting control signal line EM transmits a light emitting control signal of a certain level to the first gate 611 and the second gate 810, the disconnection between the first source 612 and the first drain 613 and the conduction between the second source 820 and the second drain 830 can be simultaneously achieved to realize the light emitting display operation of the sub-pixel.

[0154] For example, the light-emitting control transistor 800 may be a P-type transistor, and the touch-control driving transistor 610 may be an N-type transistor. When the light-emitting control signal line EM transmits a light-emitting control signal with a high level to the first gate 611 and the second gate 810, the first source 612 and the first drain 613 are connected, while the second source 820 and the second drain 830 are disconnected, so that the touch-control driving signal can be transmitted to the first electrode 210 while the driving current signal cannot be transmitted to the first electrode 210, so as to achieve the touch-control operation of the sub-pixel more stably. When the light-emitting control signal line EM transmits a light-emitting control signal with a low level to the first gate 611 and the second gate 810, the first source 612 and the first drain 613 are disconnected, while the second source 820 and the second drain 830 are connected, so that the touch-control driving signal cannot be transmitted to the first electrode 210 while the driving current signal can be transmitted to the first electrode 210, so as to achieve the light-emitting display operation of the sub-pixel more stably.

[0155] like Figure 3 As shown, in some optional embodiments, the display module 10 also includes a touch control module 10a and a touch control line 10b. The touch control module 10a is connected to the touch drive signal line 620 through the touch control line 10b. The touch control module 10a is used to transmit the touch drive signal to the touch drive transistor 610 through the touch control line 10b and the touch drive signal line 620.

[0156] Optionally, the number of the touch control lines 10b is the same as the number of the light emitting control signal lines EM.

[0157] Optionally, a light-emitting control signal line EM may be connected only to the second gate 810 of each light-emitting control transistor 800 connected to a row of sub-pixels, so that one light-emitting control signal line EM can control the light-emitting display of only one row of sub-pixels. At this time, the number of light-emitting control signal lines EM is equal to the number of rows of sub-pixels in the display module 10, that is, the number of light-emitting control signal lines EM is equal to the number of rows of the light-emitting portion 410 and / or the first electrode 210.

[0158] Optionally, a light-emitting control signal line EM can be connected to the second gate 810 of each light-emitting control transistor 800 connected to at least two rows of sub-pixels, so that one light-emitting control signal line EM can simultaneously control the light-emitting display of multiple rows of sub-pixels. At this time, the number of light-emitting control signal lines EM is smaller than the number of rows of sub-pixels in the display module 10, that is, the number of light-emitting control signal lines EM is smaller than the number of rows of the light-emitting portion 410 and / or the first electrode 210, thereby being able to better reduce the number of light-emitting control signal lines EM in the display module 10 and facilitating the control of the light-emitting display of each sub-pixel in the display module 10.

[0159] Optional, such as Figure 3As shown, one touch control line 10b can be connected to only one touch drive signal line 850, so that one touch control line 10b can transmit a touch drive signal to only one touch drive signal line 850, thereby being able to transmit a touch drive signal to only the first electrode 210 of a row of sub-pixels through the touch drive transistor 610 to realize the touch function of a row of sub-pixels. At this time, 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 portion 410 and / or the first electrode 210.

[0160] Figure 4 It is a schematic diagram of a partial structure of a display module 10 according to an embodiment of the present application.

[0161] Optional, such as Figure 4 As shown, one touch control line 10b can be connected to at least two touch drive signal lines 850, so that one touch control line 10b can transmit a touch drive signal to at least two touch drive signal lines 850 at the same time, thereby being able to transmit the touch drive signal to the first electrodes 210 of multiple rows of sub-pixels through the touch drive transistor 610, so as to simultaneously realize the touch function of multiple rows of sub-pixels. At this time, the number of touch control lines 10b is less than the number of rows of sub-pixels in the display module 10, that is, the number of touch control lines 10b is less than the number of rows of light-emitting portions 410 and / or first electrodes 210, thereby being able to better reduce the number of touch control lines 10b in the display module 10, and facilitating the touch control module 10a to control the touch operation of each sub-pixel of the display module 10.

[0162] Optionally, when there are at least two touch control lines 10b, each touch control line 10b may be connected to the same touch control module 10a, and the touch control module 10a may relatively independently transmit a touch driving signal to one or more of the touch control lines 10b.

[0163] In these optional embodiments, by setting the number of touch control lines 10b to be the same as the number of light-emitting control signal lines EM, the touch control lines 10b and the light-emitting control signal lines EM can correspond to each other in pairs, so that the work of the touch control module 10a in the display module 10 transmitting the touch drive signal to the first electrode 210 through the touch control line 10b can be more synchronized with the work of the light-emitting control signal controlling the touch drive transistor 610 and the light-emitting control transistor 800.

[0164] For example, by setting the number of touch control lines 10b to be the same as the number of light-emitting control signal lines EM, when any light-emitting control signal line EM controls the light-emitting control transistor 800 connected to the first electrode 210 of a row of sub-pixels to be turned on, the touch control module 10a can stop transmitting the touch drive signal to the touch control line 10b corresponding to the light-emitting control signal line EM, so as to stop transmitting the touch drive signal to the touch drive transistor 610 connected to the row of sub-pixels, so that when the row of sub-pixels performs light-emitting display, not only the first source 612 and the first drain 613 of the touch drive transistor 610 connected to the row of sub-pixels are disconnected, but the touch control line 10b also stops transmitting the touch drive signal to the touch drive transistor 610 connected to the row of sub-pixels through the touch drive signal line 850, thereby effectively reducing the energy consumption of the display module 10.

[0165] Optionally, when any light-emitting control signal line EM controls the light-emitting control transistor 800 connected to the first electrode 210 of a row of sub-pixels to be disconnected, the touch control module 10a transmits a touch drive signal to a touch control line 10b corresponding to the light-emitting control signal line EM, so as to transmit a drive signal to the touch drive transistor 610 connected to the row of sub-pixels, thereby realizing the touch operation of the row of sub-pixels.

[0166] For another example, by setting the number of touch control lines 10b to be the same as the number of light-emitting control signal lines EM, when any light-emitting control signal line EM controls the light-emitting control transistor 800 connected to the first electrode 210 of multiple rows of sub-pixels to be turned on, the touch control module 10a can stop transmitting the touch drive signal to the touch control line 10b corresponding to the light-emitting control signal line EM, so as to stop transmitting the touch drive signal to the touch drive transistor 610 connected to the multiple rows of sub-pixels, so that when the multiple rows of sub-pixels perform light-emitting display, not only the first source 612 and the first drain 613 of the touch drive transistor 610 connected to the multiple rows of sub-pixels are disconnected, but the touch control line 10b also stops transmitting the touch drive signal to the touch drive transistor 610 connected to the multiple rows of sub-pixels through the touch drive signal line 850, thereby effectively reducing the energy consumption of the display module 10.

[0167] Optionally, when any one of the light-emitting control signal lines EM controls the light-emitting control transistor 800 connected to the first electrode 210 of multiple rows of sub-pixels to be disconnected, the touch control module 10a transmits a touch drive signal to a touch control line 10b corresponding to the light-emitting control signal line EM, so as to transmit a touch drive signal to the touch drive transistor 610 connected to the multiple rows of sub-pixels, thereby realizing the touch operation of the multiple rows of sub-pixels.

[0168] In some optional embodiments, the touch control module 10a is further used to transmit a reset signal to the first electrode 210 through the touch drive signal line 850 and the touch drive transistor 610 to reset the first electrode 210. Optionally, the touch control module 10a can be used to transmit a reset signal to the touch drive signal line 850. When one or more sub-pixels in the display module 10 enter the non-luminous stage, the touch control module 10a can transmit a reset signal to the one or more sub-pixels through the touch drive signal line 850 to achieve resetting of the voltage of the first electrode 210.

[0169] Optionally, the touch driving signal line 850 may be multiplexed as a reset signal line in the display module, so that the reset signal transmitted from the touch control module 10 a may be transmitted to the first electrode 210 through the touch driving signal line 850 .

[0170] In some embodiments, each light-emitting unit has a display cycle, and the display cycle includes at least one light-emitting phase and at least one non-light-emitting phase. The light-emitting unit can display light in its light-emitting phase, and the light-emitting unit may not display light in its non-light-emitting phase. Specifically, the time period corresponding to displaying a frame of image can be a display cycle.

[0171] In a display cycle of the light-emitting unit, the touch control module 10a may transmit a reset signal to the first electrode 210 of the light-emitting unit only when the light-emitting unit is in the first non-light-emitting stage, so as to achieve the resetting of the voltage of the first electrode 210. Optionally, in the first non-light-emitting stage of the light-emitting unit, after the touch control module 10a transmits the reset signal to the first electrode 210 of the light-emitting unit, the touch control module 10a may also transmit a touch driving signal to the first electrode 210 of the light-emitting unit in the first non-light-emitting stage of the light-emitting unit. Optionally, the touch control module 10a may also transmit a touch driving signal to the first electrode 210 of the light-emitting unit when the light-emitting unit is in the non-light-emitting stage after the first non-light-emitting stage, so as to achieve the touch function of the sub-pixel corresponding to the light-emitting unit.

[0172] like Figure 3 As shown, in some embodiments of the present application, the display module 10 may include a touch sensing signal line 700 connected to the second electrode 510, and the touch sensing signal line 700 is used to receive the touch sensing signal output by 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 can obtain the touch sensing signal fed back by the second electrode 510 through the touch sensing signal line 700 to detect the change of the induced capacitance between the first electrode 210 and the second electrode 510.

[0173] Optionally, when the light-emitting unit EL emits light, the touch sensing signal line 700 is also used to transmit a negative power supply voltage signal to the second electrode 510 .

[0174] Optionally, the touch control module 10a may be configured to obtain the touch sensing signal fed back by the second electrode 510 through the touch sensing signal line 700 when the light-emitting unit is not emitting light, so as to detect the change of the induced capacitance between the first electrode 210 and the second electrode 510 in the non-light-emitting stage of the light-emitting unit. Optionally, the touch control module 10a may also be configured to transmit a negative power supply voltage signal (such as an ELVSS signal) to the second electrode 510 through the touch sensing signal line 700 when the light-emitting unit is emitting light, so as to realize the light-emitting display of the light-emitting unit in the light-emitting stage of the light-emitting unit.

[0175] In some embodiments of the present application, there are various ways to connect the touch sensing signal line 700 and the second electrode 510 .

[0176] like Figure 3 As shown, in some optional embodiments, the touch sensing signal line 700 may be directly connected to the second electrode 510. Optionally, at least two second electrodes 510 are arranged at intervals in the first direction Y and extend along the second direction Z to form.

[0177] Optionally, the orthographic projections of the light-emitting portions 410 in the same column on the array substrate 100 may be within the orthographic projections of the same second electrode 510 on the array substrate 100, so that a touch sensing signal line 700 can obtain the changes in the induced capacitance between the first electrode 210 and the second electrode 510 in at least one column of sub-pixels.

[0178] Optionally, the orthographic projections of at least two columns of light emitting portions 410 spaced apart and adjacent to each other in the first direction Y on the array substrate 100 may be located within the orthographic projection of the same second electrode 510 on the array substrate 100, and / or the orthographic projections of at least two columns of first electrodes 210 spaced apart and adjacent to each other in the first direction Y on the array substrate 100 may be located within the orthographic projection of the same second electrode 510 on the array substrate 100. Thus, a touch sensing signal line 700 connected to a second electrode 510 can simultaneously obtain the changes in the sensed capacitance between the first electrode 210 and the second electrode 510 in multiple columns of sub-pixels, thereby effectively reducing the number of touch sensing signal lines 700 and facilitating the arrangement of the touch sensing signal lines 700.

[0179] Figure 5 is a partial structural diagram of a display module 10 according to another embodiment of the present application. Figure 6 It is a partial cross-sectional view of a display module 10 according to another embodiment of the present application.

[0180] like Figure 5 and Figure 6As shown, in some other optional embodiments, the display module also includes at least two isolation structures 310 which are spaced apart in the first direction Y and extended along the second direction Z, the material of the isolation structure 310 includes a conductive material, the second electrodes 510 are arranged 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 through the isolation structure 310.

[0181] The touch sensing signal line 700 can be connected to the isolation structure 310, so that the touch sensing signal line 700 can be connected to the second electrode 510 through the isolation structure 310. The touch sensing signal line 700 can be used to transmit a touch sensing signal to the second electrode 510 through the isolation structure 310.

[0182] Optionally, the isolation structure 310 may be disposed around at least a portion of the pixel opening 322 to facilitate the connection between the isolation structure 310 and the second electrode 510 , and to better increase the connectable area between the isolation structure 310 and the second electrode 510 .

[0183] Optionally, the touch sensing signal line 700 may be connected to the isolation structure 310, so that the touch sensing signal line 700 can be connected to the second electrode 510 through the isolation structure 310. The touch sensing signal line 700 may be used to receive a touch sensing signal output by the second electrode 510 through the isolation structure 310, so that one touch sensing signal line 700 may obtain a change in the induced capacitance between the first electrode 210 and the second electrode 510 in at least one column of sub-pixels through the isolation structure 310.

[0184] Figure 7 is a partial structural diagram of a display module 10 according to another embodiment of the present application. Figure 8 It is a partial cross-sectional view of a display module 10 according to yet another embodiment of the present application.

[0185] like Figure 7 and Figure 8 As shown, the isolation structure 310 may be in a grid shape. Optionally, part of the isolation structure 310 may be extended along the first direction Y, and part of the isolation structure 310 may be extended along the second direction Z, so that the isolation structure 310 may be interwoven to form a grid.

[0186] Optionally, part of the second electrodes 510 adjacent in the first direction Y are connected via the isolation structure 310. Optionally, at least two columns of second electrodes 510 spaced and adjacent in the first direction Y may be connected to the same isolation structure 310. For example, at least two columns of second electrodes 510 spaced and adjacent in the first direction Y may be located in a hollow area in the grid-like isolation structure 310, so that one touch sensing signal line 700 may simultaneously obtain the changes in the sensed capacitance between the first electrodes 210 and the second electrodes 510 in at least two columns of sub-pixels through the isolation structure 310.

[0187] For the convenience of description, the following embodiments are described by taking the example that the touch sensing signal line 700 is connected to the second electrode 510 through the isolation structure 310 .

[0188] like Figure 8 As shown, in some optional embodiments, the isolation structure 310 has a first end 310a and a second end 310b relative to each other in the thickness direction X of the display module 10, the second end 310b is located on the side of the first end 310a away from the array substrate 100, and the orthographic projection of the first end 310a on the array substrate 100 is located within the orthographic projection of the second end 310b on the array substrate 100.

[0189] Optionally, in the direction away from the array substrate 100, the distance between the surfaces of the isolation structure 310 and the pixel openings 322 on both sides of the isolation structure 310 gradually increases, so that the orthographic projection of the first end 310a of the isolation structure 310 on the array substrate 100 is located within the orthographic projection of the second end 310b of the isolation structure 310 on the array substrate 100.

[0190] In these optional embodiments, by setting the orthographic projection of the first end 310a of the isolation structure 310 on the array substrate 100 to be within the orthographic projection of the second end 310b of the isolation structure 310 on the array substrate 100, when the light-emitting functional layer 400 of the display module 10 is evaporated, the second end 310b can block at least a portion of the material used to prepare the light-emitting functional layer 400 to separate the light-emitting functional layer 400 between adjacent sub-pixels, and can facilitate the formation of a plurality of spaced light-emitting portions 410, so that when the light-emitting functional layer 400 of the display module 10 is evaporated, there is no need to set a mask with high precision, for example, when the light-emitting functional layer 400 is evaporated, there is no need to set a high-precision metal mask (Fine Metal Mask, FMM), thereby reducing the production cost of the display module 10.

[0191] Fig. 9 It is a partial cross-sectional view of a display module 10 according to another embodiment of the present application.

[0192] like Fig. 9As shown, in some optional embodiments, the isolation structure 310 includes a first isolation portion 311 and a second isolation portion 312 located on the side of the first isolation portion 311 facing away from the array substrate 100, the second isolation portion 312 is arranged to protrude from the first isolation portion 311 toward the pixel opening 322, and the orthographic projection of the first isolation portion 311 on the array substrate 100 is located within the orthographic projection of the second isolation portion 312 on the array substrate 100.

[0193] Optionally, the first end portion 310a may be located at the first isolation portion 311, and the second end portion 310b may be located at the second isolation portion 312. Optionally, the second isolation portion 312 may extend toward the pixel opening 322 relative to the first isolation portion 311.

[0194] Optionally, the material of the first isolation portion 311 includes a conductive material, and the second electrodes 510 adjacent to each other in the second direction Z are connected via the first isolation portion 311 .

[0195] By setting the orthographic projection of the first isolating portion 311 on the array substrate 100 to be within the orthographic projection of the second isolating 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 evaporated, the second isolating portion 312 can shield at least a portion of the material used to prepare the light-emitting functional layer 400 and the material used to prepare the second electrode layer 500, so as to separate the light-emitting functional layer 400 and the second electrode layer 500 between adjacent sub-pixels, and can facilitate the formation of a plurality of spaced light-emitting portions 410 and the second electrode 510, so that when the light-emitting functional layer 400 and the second electrode layer 500 of the display module 10 are evaporated, there is no need to set a mask plate with high precision, for example, when the light-emitting functional layer 400 and the second electrode layer 500 are evaporated, there is no need to set a high-precision metal mask plate, thereby reducing the production cost of the display module 10.

[0196] In some optional embodiments, there are many ways to set the relative position between the isolation structure 310 and the pixel definition layer 320. Figure 8 As shown, the isolation structure 310 can be disposed on the side of the pixel defining portion 321 away from the array substrate 100 , so that the isolation structure 310 can have a higher height than the array substrate 100 , so as to facilitate the isolation structure 310 to separate the light-emitting functional layer 400 .

[0197] Fig.10 It is a partial cross-sectional view of a display module 10 according to another embodiment of the present application.

[0198] like Fig.10As shown, in other embodiments, the pixel defining portion 321 is provided with a receiving groove 321a, and at least a portion of the isolation structure 310 is located in the receiving groove 321a, so that the isolation structure 310 is less likely to have an excessively large height compared to the array substrate 100, thereby being able to better reduce the thickness of the display module 10.

[0199] like Fig.10 As shown, optionally, the surface shape of the isolation structure 310 facing the pixel opening 322 may be 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 may be set according to the preparation process requirements or the transmittance requirements at the gap, so that the gap between adjacent isolation structures 310 can be prepared by a better preparation process and preparation method, or light within a specific angle range can better pass through the gap between adjacent isolation structures 310, so as to facilitate the design of the transmittance of the display panel 10.

[0200] Fig.11 It is a partial cross-sectional view of a display module 10 according to another embodiment of the present application.

[0201] like Fig.11 As shown, in 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 gap between adjacent isolation structures 310, so that when preparing 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 gap between adjacent isolation structures 310 can be prepared using the same preparation process method, thereby greatly improving the preparation efficiency of the display panel 10.

[0202] The embodiment of the second aspect of the present application provides a display device, and the display device includes the display module 10 of any embodiment of the first aspect. Since the display device provided by the embodiment of the second aspect of the present application includes the display module 10 of any embodiment of the first aspect, the display device provided by the embodiment of the second aspect of the present application has the beneficial effects of the display module 10 of any embodiment of the first aspect, which will not be repeated here.

[0203] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0204] Fig.12 is a schematic flow chart of a driving method of a display module 10 provided in an embodiment of the present application. Fig.13It is a schematic timing diagram of a driving method of a display module 10 provided in an embodiment of the present application.

[0205] Please combine Figures 1 to 11 Also see Fig.12 and Fig.13 The embodiment of the third aspect of the present application provides a driving method of the display module 10 of any of the above embodiments, each light-emitting unit has a display cycle, the display cycle includes at least one light-emitting phase and at least one non-light-emitting phase, and the driving method includes:

[0206] Step S01: In the light emitting stage of the light emitting unit, a driving current signal is input to the first electrode 210 of the light emitting unit.

[0207] Step S02: In the non-light-emitting stage 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.

[0208] In the driving method provided in the present application, by setting it to transmit the touch driving signal or the reset signal to the first electrode 210 of the light-emitting unit only in the non-light-emitting stage of the light-emitting unit, it is not easy to cause mutual interference between the driving current signal and the touch driving signal and the reset signal, so that the display module 10 can have better light-emitting display stability and touch stability.

[0209] In some optional embodiments, step S02 further includes:

[0210] Step S021: Fig.13 As shown, in the first non-light-emitting phase in the display period of the light-emitting unit, a reset signal is transmitted to the first electrode 210 of the light-emitting unit.

[0211] Optionally, in the first non-luminous phase of the display cycle of the luminous unit, the touch control module 10a may transmit a reset signal to the first electrode 210 through the touch control line 10b, the touch drive signal line 620 and the touch drive transistor 610 to reset the first electrode 210.

[0212] Optionally, step S021 may further include:

[0213] Step S0211: Fig.13 As shown, in the first non-light-emitting stage in the display cycle 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.

[0214] By setting step S0211, in the first non-luminous stage of the light-emitting unit, after the touch control module 10a transmits the reset signal to the first electrode 210 of the light-emitting unit, the touch control module 10a can also transmit the touch driving signal to the first electrode 210 of the light-emitting unit in the first non-luminous stage of the light-emitting unit.

[0215] Fig.14 It is a schematic timing diagram of a driving method of a display module 10 provided in another embodiment of the present application.

[0216] Optionally, the display cycle includes at least two non-light-emitting phases, and step S021 may further include:

[0217] Step S022: Fig.14 As shown, in the non-light-emitting phase after the first non-light-emitting phase in the display cycle of the light-emitting unit, the touch driving signal is transmitted to the first electrode 210 of the light-emitting unit.

[0218] Optionally, in the non-luminous phase after the first non-luminous phase in the display cycle of the luminous unit, the touch control module 10a may transmit a touch driving signal to the first electrode 210 through the touch control line 10b, the touch driving signal line 620 and the touch driving transistor 610.

[0219] By transmitting a reset signal to the first electrode 210 in the first non-luminous phase in the display cycle to achieve the resetting of the first electrode 210, the touch driving signal is not easily affected by the residual driving current signal in the first electrode 210 in the non-luminous phase after the first non-luminous phase in the display cycle, so that the display module 10 has better touch stability.

[0220] In some optional embodiments, when the light-emitting unit is converted from a non-light-emitting stage to a light-emitting stage, the state of transmitting a reset signal to the first electrode 210 of the light-emitting unit is converted to a state of stopping transmitting a reset signal to the first electrode 210 of the light-emitting unit, or the state of transmitting a touch drive signal to the first electrode 210 of the light-emitting unit is converted to a state of stopping transmitting a touch drive signal to the first electrode 210 of the light-emitting unit.

[0221] Optionally, when the light-emitting unit is converted from a non-light-emitting stage to a light-emitting stage, the state of transmitting a reset signal to the first electrode 210 of the light-emitting unit is converted to a state of stopping transmitting a reset signal to the first electrode 210 of the light-emitting unit. This may refer to when the light-emitting unit is converted from a non-light-emitting stage to a light-emitting stage, 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, the touch control module 10a stops transmitting the reset signal to the first electrode 210 of the light-emitting unit.

[0222] Optionally, the reset signal may be a constant potential signal. Optionally, the reset signal may be a constant low level signal.

[0223] Optionally, when the light-emitting unit is converted from a non-light-emitting stage to a light-emitting stage, the state of transmitting a touch drive signal to the first electrode 210 of the light-emitting unit is converted to a state of stopping transmitting the touch drive signal to the first electrode 210 of the light-emitting unit. This may refer to when the light-emitting unit is converted from a non-light-emitting stage to a light-emitting stage, 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, the touch control module 10a stops transmitting the touch drive signal to the first electrode 210 of the light-emitting unit.

[0224] Optionally, the touch driving signal is a pulse signal. At the moment before the light emitting control signal changes from a high level to a low level, the touch driving signal may be a low level signal.

[0225] Optionally, the lowest potential of the reset signal is the same as the lowest potential of the touch driving signal.

[0226] In these optional embodiments, at the moment before the light emitting control signal changes from a high level to a low level, the lowest potential of the reset signal can be the same as the lowest potential of the touch driving signal, and the reset signal can be a low level signal, so that the sub-pixel is less likely to flicker.

[0227] Fig.15 It is a structural schematic diagram of a pixel circuit provided in an embodiment of the present application.

[0228] Please combine Figures 1 to 11 Also see Figures 12 to 15 An embodiment of the fourth aspect of the present application provides a pixel circuit, which can be used in the display module 10 in any of the aforementioned embodiments.

[0229] The pixel circuit includes: a light-emitting unit EL; a light-emitting control transistor 800 connected to the light-emitting unit EL; and a touch driving transistor 610 connected to the light-emitting unit EL, wherein in the light-emitting stage, the touch driving transistor 610 is disconnected, and the light-emitting control transistor 800 is turned on to control the light-emitting unit EL to emit light, and in the non-light-emitting stage, the light-emitting control transistor 800 is disconnected, and the touch driving transistor 610 is turned on and transmits a touch driving signal to the light-emitting unit EL.

[0230] In the pixel circuit provided in the embodiment of the present application, the light emitting control signal line EM may be the light emitting control signal line EM described in any of the aforementioned implementations.

[0231] Optionally, the light-emitting unit EL includes a stacked first electrode 210, a light-emitting portion 410, and a second electrode 510. The light-emitting control transistor 800 may be connected to the first electrode 210 to control the light emission of the light-emitting unit EL. The touch driving transistor 610 may be connected to the first electrode 210 and used to transmit a touch driving signal to the first electrode 210. Optionally, the non-light-emitting stage may refer to the non-light-emitting stage of the light-emitting unit EL. For example, in the non-light-emitting stage of the light-emitting unit EL, the light-emitting portion 410 in the light-emitting unit EL may not emit light for display. Optionally, the light-emitting unit EL may also have a light-emitting stage. In the light-emitting stage of the light-emitting unit EL, the light-emitting portion 410 in the light-emitting unit EL may emit light for display when the light-emitting control transistor 800 is turned on.

[0232] Optionally, the light emitting unit EL in the pixel circuit provided in this embodiment may be the light emitting unit EL in any of the foregoing embodiments. Optionally, the touch driving transistor 610 in the pixel circuit provided in this embodiment may be the touch driving transistor 610 in any of the foregoing embodiments. Optionally, the light emitting control transistor 800 in the pixel circuit provided in this embodiment may be the light emitting control transistor 800 in any of the foregoing embodiments.

[0233] By setting the light-emitting control transistor 800 and the touch driving transistor 610 to be connected to the first electrode 210, when the pixel circuit is applied to the display module, the first electrode 210 can not only serve as the pixel electrode of the display module to participate in the light-emitting display of the display module, but also can be reused as the touch electrode of the display module to realize the touch function of the display module.

[0234] In some optional embodiments, the pixel circuit also includes a light-emitting control signal line EM, which is connected to the control end of the light-emitting control transistor 800 and the control end of the touch driving transistor 610, and the light-emitting control signal line EM is used to transmit the light-emitting control signal to the light-emitting control transistor 800 and the touch driving transistor 610.

[0235] The light-emitting control signal line EM can transmit the light-emitting control signal to the touch driving transistor 610 and the light-emitting control transistor 800, so as to control the touch driving transistor 610 and the light-emitting control transistor 800 at the same time. In the non-light-emitting stage, the light-emitting control signal can control the light-emitting control transistor 800 to be turned off, thereby controlling the light-emitting unit EL not to 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 can be transmitted to the light-emitting unit EL, so that in the non-light-emitting stage, the light-emitting unit EL can be affected by the touch driving signal to perform touch operation, and the light-emitting unit EL is not easily affected by the driving current signal used to drive the light emission, that is, when the first electrode 210 in the light-emitting unit EL participates in the touch operation of the display module, the first electrode 210 is not easily disturbed by the driving current signal.

[0236] Optionally, one of the light-emitting 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 conduction conditions of the light-emitting control transistor 800 and the touch driving transistor 610 are different, that is, the light-emitting control signals required when the light-emitting control transistor 800 and the touch driving transistor 610 are turned on are different, so that the light-emitting control transistor 800 and the touch driving transistor 610 are not 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 not easily interfered with each other.

[0237] Specifically, in the light-emitting control transistor 800 and the touch driving transistor 610 connected to a light-emitting unit EL, when the light-emitting control signal line EM transmits a light-emitting control signal of a certain level to the control end of the light-emitting control transistor 800 and the control end of the touch driving transistor 610, the touch driving transistor 610 can be turned on and the light-emitting control transistor 800 can be turned off at the same time, so that the light-emitting unit EL can participate in the touch control operation; or when the light-emitting control signal line EM transmits a light-emitting control signal of a certain level to the control end of the light-emitting control transistor 800 and the control end of the touch driving transistor 610, the touch driving transistor 610 can be turned off and the light-emitting control transistor 800 can be turned on, so that the light-emitting unit EL can perform light-emitting display operation.

[0238] For example, the light-emitting control transistor 800 may be a P-type transistor, and the touch-control driving transistor 610 may be an N-type transistor. When the light-emitting control signal line EM transmits a light-emitting control signal with a high level to the control terminal of the touch-control driving transistor 610 and the control terminal of the light-emitting control transistor 800, the touch-control driving transistor 610 is turned on, while the light-emitting control transistor 800 is turned off, so that the touch-control driving signal can be transmitted to the first electrode 210 while the driving current signal for driving the light emission is not transmitted to the first electrode 210, so as to achieve the touch control operation of the light-emitting unit EL more stably. When the light-emitting control signal line EM transmits a light-emitting control signal with a low level to the control terminal of the touch-control driving transistor 610 and the control terminal of the light-emitting control transistor 800, the touch-control driving transistor 610 is turned off, while the light-emitting control transistor 800 is turned on, so that the touch-control driving signal cannot be transmitted to the first electrode 210 while the driving current signal for driving the light emission can be transmitted to the first electrode 210, so as to achieve the light-emitting display operation of the light-emitting unit EL more stably.

[0239] In some optional embodiments, the pixel circuit also includes a touch drive signal line 620, the first end of the touch drive transistor 610 is connected to the touch drive signal line 620, the 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.

[0240] In these optional embodiments, by providing a touch drive signal line 620 for transmitting a touch drive signal and connected to the touch drive transistor 610, the touch drive signal line 620 can transmit a touch drive signal to the first electrode 210 through the touch drive transistor 610, so that the first electrode 210 can also be reused as a touch drive electrode in the display module. Optionally, the second electrode 510 in the light emitting unit EL can be reused as a touch sensing electrode of the display module.

[0241] Optionally, the touch drive signal line 620 is also used to transmit a reset signal to the light-emitting unit EL through the touch drive transistor 610, so that when one or more sub-pixels in the display module enter the non-light-emitting stage, in addition to being able to transmit the touch drive signal to the first electrode 210 through the touch drive transistor 610, the touch drive signal line 620 can also transmit a reset signal to the first electrode 210 of one or more sub-pixels through the touch drive transistor 610 to achieve resetting of the voltage of the first electrode 210.

[0242] In some optional embodiments, in the non-luminous stage, the touch driving transistor 610 is turned on and transmits a touch driving signal or a reset signal to the light emitting unit EL. In the non-luminous stage, that is, when the light emitting control signal controls the light emitting control transistor 800 to be turned off to control the light emitting unit EL not to emit light, the light emitting control signal can control the touch driving transistor 610 to be turned on, so that the touch driving transistor 610 can transmit the touch driving signal or the reset signal to the light emitting unit EL, so that in the non-luminous stage, the light emitting unit EL can only be affected by the touch driving signal or the reset signal, and is not easily interfered by the driving current signal used to drive the light emission.

[0243] Fig.16 It is a structural schematic diagram of a pixel circuit provided in another embodiment of the present application.

[0244] like Fig.16 As shown, in some optional embodiments, the pixel circuit also 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, wherein 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, the first end of the second control transistor T2 is connected to the power supply voltage signal line VDD, the second end of the second control transistor T2 is connected to the first end of the driving transistor 900, the first end of the first control transistor T1 is connected to the second end of the driving transistor 900, and the second end of the first control transistor T1 is connected to the light-emitting unit EL.

[0245] Optionally, the pixel circuit also includes an initialization module P4, a storage module P1, a data writing module P2 and a compensation module P3, the initialization module P4 is connected to the control end of the driving transistor 900 and is used to initialize the control end of the driving transistor 900, the storage module P1 is connected to the control end of the driving transistor 900 and is used to maintain 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 to transmit the data signal to the driving transistor 900, the driving transistor 900 is used to generate a driving current signal according to the data signal to drive the light-emitting unit EL to emit light, the compensation module P3 is connected to the storage module P1, the second end of the driving transistor 900 and the first scanning signal end S1, and the compensation module P3 is used to perform threshold compensation on the driving transistor 900.

[0246] Optionally, the initialization module P4 includes an initialization transistor T5, the storage module P1 includes a first capacitor C1, the data writing module P2 includes a data writing transistor T3, and the compensation module P3 includes a compensation transistor T4, wherein the control end of the initialization transistor T5 is connected to the second scan 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 writing transistor T3 is connected to the first scan signal end S1, the first end of the data writing transistor T3 is connected to the data signal end VDATA, the second end of the data writing 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 scan 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.

[0247] Optionally, the non-luminous stage may include an initialization stage and a data writing stage, wherein in the initialization stage, 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 stage, the data writing module P2 and the compensation module P3 are turned on, and the data signal provided by the data signal terminal VDATA is transmitted to the control end of the driving transistor 900 through the data writing module P2, the driving transistor 900 and the compensation module P3.

[0248] Optionally, in the light emitting stage, the light emitting control signal controls the first control transistor T1 and the second control transistor T2 to be turned on, and the driving transistor 900 provides a driving current signal to the light emitting unit EL through the first control transistor T1 to make the light emitting unit EL emit light.

[0249] In these optional embodiments, the initialization module P4 is connected to the second scan signal terminal S2, and the second scan signal terminal S2 can be used to control the conduction or shutdown of the initialization module P4, so as to control the initialization module P4 to transmit the initialization signal to the driving transistor 900 to initialize the control terminal of the driving transistor 900. Optionally, the initialization signal and the reset signal transmitted by the touch drive signal line 620 can be similar signals, and both can play a certain initialization or reset role on the device. Specifically, the second scan signal terminal S2 is used to provide a second scan signal, and the second scan signal includes an enable signal for controlling the conduction of the initialization transistor T5 of the initialization module P4 and a non-enable signal for controlling the shutdown of the initialization transistor T5. In the initialization stage of the pixel circuit driving the light-emitting unit EL of the sub-pixel in the display module, the enable signal provided by the second scan signal can turn on the initialization transistor T5, so that the initialization module P4 can transmit the initialization signal to the control terminal of the driving transistor 900 to initialize the control terminal of the driving transistor 900.

[0250] The data writing module P2 is connected to the data signal terminal VDATA, the first scanning signal terminal S1 and the first terminal of the driving transistor 900; the compensation module P3 is connected to the control terminal of the driving transistor 900, the second terminal of the driving transistor 900 and the first scanning signal terminal S1. Specifically, the data signal terminal VDATA is used to provide a data signal. The first scanning signal terminal S1 is used to provide a first scanning signal, and the first scanning signal includes an enable signal for controlling the data writing transistor T3 of the data writing module P2 and the compensation transistor T4 of the compensation module P3 to be turned on, and a non-enable signal for controlling the data writing transistor T3 and the compensation transistor T4 to be turned off. In the data writing stage 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 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 by the data signal terminal VDATA is transmitted to the control terminal of the driving transistor 900 through the data writing module P5, the driving transistor 900 and the compensation module P3.

[0251] The storage module P1 can store electrical energy. During the light-emitting stage of 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 non-enable signal provided by the first scanning signal can turn off the data writing transistor T3 and the compensation transistor T4. At this time, the storage module P1 can better maintain the potential of the control end of the driving transistor 900.

[0252] Optionally, in the non-luminous stage, the initialization stage may occur before the data writing stage, so that in the data writing stage the data writing module P2 writes the data signal into the control end of the driving transistor 900, and the compensation module P3 uses the data signal to charge the storage module P1.

[0253] Optionally, during the initialization stage and the 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 stage, the touch driving transistor 610 can remain turned on to transmit a touch driving signal or a reset signal to the light-emitting unit EL, so as to increase the length of time that the first electrode 210 in the light-emitting unit EL participates in the touch operation, or to make the reset signal have a better action time on the light-emitting unit EL, so as to better reset the light-emitting unit EL.

[0254] In an embodiment of the present application, the pixel circuit can be driven using the driving method provided by any embodiment in 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 provided by any embodiment in the third aspect, and no further details will be given here.

[0255] Fig.17 It is a structural schematic diagram of a pixel circuit provided in another embodiment of the present application.

[0256] like Fig.17 As shown, optionally, the compensation transistor T4 may include 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 scan 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 not likely to leak at the compensation module P3, thereby improving the working reliability of the pixel circuit.

[0257] Optionally, the initialization transistor T5 may include 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 scan 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. By providing the third sub-transistor T5a and the fourth sub-transistor T5b, the initialization signal is not likely to leak at the initialization module P4, thereby improving the working reliability of the pixel circuit.

[0258] According to the embodiments of the present application as above, these embodiments do not describe all the details in detail, nor do they limit the invention to specific embodiments. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain 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 the modifications based on the present application. The present application is only limited by the claims and their full scope and equivalents.

Claims

1. A display module, characterized in that: include: An array substrate; a light-emitting unit, disposed on one side of the array substrate, and comprising a first electrode located on the first electrode layer, a second electrode located on the second electrode layer, and a light-emitting portion located on the light-emitting functional layer, wherein the second electrode is located on a side of the first electrode away from the array substrate, and the light-emitting portion is located between the second electrode and the first electrode; a pixel definition layer, disposed on one side of the array substrate, the pixel definition layer comprising a pixel definition portion and a pixel opening defined by the pixel definition portion, at least a portion of the first electrode being exposed from the pixel opening, One of the first electrode and the second electrode is used to receive a touch driving signal, and the other of the first electrode and the second electrode is used to output a touch sensing signal.

2. The display module according to claim 1, characterized in that: At least a portion of the orthographic projections of the first electrodes on the array substrate are staggered with the orthographic projections of the second electrodes on the array substrate; Preferably, each of the first electrodes comprises a first portion exposed from the pixel opening and a second portion located between the pixel defining portion and the array substrate, and an orthographic projection of at least a portion of the second portion on the array substrate is staggered with an orthographic projection of the second electrode on the array substrate; Preferably, the second portion is located on at least one side of the first portion in the first direction and / or the second direction.

3. The display module according to claim 1, characterized in that: The display module includes a touch driving signal line and a touch driving transistor connected to the first electrode, the touch driving signal line is used to transmit a touch driving signal to the first electrode through the touch driving transistor, the touch driving 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 driving signal line; Preferably, the touch drive transistor further includes a first gate electrode, 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 facing away from the first insulating layer, the first gate electrode is arranged on a side of the first insulating layer facing away from the second insulating layer, the touch drive signal line is arranged between the first insulating layer and the second insulating layer, and the first source electrode and the first drain electrode are arranged between the second insulating layer and the third insulating layer; Preferably, the first electrodes are arranged at intervals in the first direction and the second direction, and the touch driving transistors respectively corresponding to two adjacent first electrodes in the first direction are connected to the same touch driving signal line; Preferably, the number of the touch drive signal lines is at least two, at least two of the touch drive signal lines are spaced apart in the second direction, and the touch drive transistors corresponding to two adjacent first electrodes in the second direction are connected to different touch drive signal lines.

4. The display module according to claim 3, characterized in that: The light emitting unit is configured such that when the touch driving transistor connected to the first electrode of the light emitting unit is turned on, the light emitting unit does not emit light; Preferably, the touch driving transistor is configured to be turned off when the light emitting portion corresponding to the first electrode connected to the touch driving transistor emits light; Preferably, the display module further comprises a driving transistor and a light-emitting control transistor, wherein 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-emitting unit to emit light, the light-emitting control transistor comprises 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; Preferably, the display module further includes a light emitting control signal line, the touch driving transistor further includes a first gate, the light emitting control transistor further includes a second gate, the light emitting control signal line is connected to the first gate and the second gate to transmit a light emitting control signal to the touch driving transistor and the light emitting control transistor, wherein one of the touch driving transistor and the light emitting control transistor is an N-type transistor, and the other is a P-type transistor; Preferably, 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; Preferably, the number of the touch control lines is the same as the number of the light emitting control signal lines; Preferably, the touch drive signal line is further used to transmit a reset signal to the first electrode through the touch drive transistor to reset the first electrode.

5. The display module according to claim 1, characterized in that: At least two of the second electrodes are spaced apart in the first direction and extended along the second direction, wherein the first direction intersects with the second direction; Preferably, the display module comprises 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 by the second electrode; Preferably, 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.

6. The display module according to claim 1, characterized in that: The display module further includes at least two isolation structures spaced apart in a first direction and extending along a second direction, the isolation structures are made of a conductive material, and the second electrodes are spaced apart in the first direction and the second direction, and the adjacent second electrodes in the second direction are electrically connected to each other through the isolation structures; Preferably, the isolation structure is arranged around at least a portion of the pixel opening; Preferably, the display module comprises 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 by the second electrode through the isolation structure; Preferably, when the light-emitting unit emits light, the touch sensing signal line is also used to transmit a negative power supply voltage signal to the second electrode; Preferably, the isolation structure has a first end and a second end opposite to each other in the thickness direction of the display module, the second end is located at a side of the first end away from the array substrate, and an orthographic projection of the first end on the array substrate is located within an orthographic projection of the second end on the array substrate; Preferably, in a direction away from the array substrate, the distance between the surfaces of the isolation structure facing the pixel openings on both sides of the isolation structure gradually increases; Preferably, the isolation structure comprises a first isolation portion and a second isolation portion located on a side of the first isolation portion away from the array substrate, the second isolation portion is arranged to protrude from the first isolation portion toward the pixel opening, and an orthographic projection of the first isolation portion on the array substrate is located within an orthographic projection of the second isolation portion on the array substrate; Preferably, the material of the first isolation portion includes a conductive material, and the second electrodes adjacent to each other in the second direction are connected via the first isolation portion; Preferably, the isolation structure is in a grid shape, and some of the second electrodes adjacent to each other in the first direction are connected via the isolation structure.

7. The display module according to claim 6, characterized in that: The isolation structure is arranged on a side of the pixel defining portion away from the array substrate, or the pixel defining portion is provided with an accommodating groove, and at least a part of the isolation structure is located in the accommodating groove.

8. The display module according to any one of claims 5 to 7, characterized in that: 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 by the second electrode through the touch sensing signal line when the light-emitting unit does not emit light; Preferably, 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.

9. A display device, characterized in that: Comprising the display module as described in any one of claims 1 to 8.

10. A method for driving a display module according to any one of claims 1 to 8, characterized in that: Each of the light-emitting units has a display period, the display period includes at least one light-emitting phase and at least one non-light-emitting phase, and the driving method includes: In the light emitting phase of the light emitting unit, transmitting a driving current signal to the first electrode of the light emitting unit; In the non-light-emitting phase of the light-emitting unit, a touch driving signal or a reset signal is transmitted to the first electrode of the light-emitting unit.

11. The driving method according to claim 10, characterized in that: The display cycle includes at least one non-luminous phase, and in the non-luminous phase of the luminous unit, the step of transmitting a touch drive signal or a reset signal to the first electrode of the luminous unit further includes: In the first non-light-emitting phase of the display cycle of the light-emitting unit, transmitting a reset signal to the first electrode of the light-emitting unit; Preferably, in the first non-luminescent stage in the display cycle of the light-emitting unit, the step of transmitting a reset signal to the first electrode of the light-emitting unit further includes: In the first non-light-emitting phase of the display cycle of the light-emitting unit, sequentially transmitting a reset signal and a touch driving signal to the first electrode of the light-emitting unit; Preferably, the display cycle includes at least two non-luminous phases, and in the non-luminous phase of the light-emitting unit, the step of transmitting a touch drive signal or a reset signal to the first electrode of the light-emitting unit further includes: Transmitting a touch driving signal to the first electrode of the light emitting unit in the non-light emitting phase after the first non-light emitting phase in the display cycle of the light emitting unit; Preferably, when the light-emitting unit is converted from the non-light-emitting stage to the light-emitting stage, the state of transmitting a reset signal to the first electrode of the light-emitting unit is converted to the state of stopping transmitting a reset signal to the first electrode of the light-emitting unit, or the state of transmitting a touch driving signal to the first electrode of the light-emitting unit is converted to the state of stopping transmitting a touch driving signal to the first electrode of the light-emitting unit; Preferably, the lowest potential of the reset signal is the same as the lowest potential of the touch drive signal; Preferably, the touch driving signal is a pulse signal.

12. A pixel circuit, characterized in that: include: Light emitting unit; A light emitting control transistor connected to the light emitting unit; A touch driving transistor connected to the light emitting unit, Among them, in the light-emitting stage, the touch driving transistor is turned off, and the light-emitting control transistor is turned on to control the light-emitting unit to emit light. In the non-light-emitting stage, 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.

13. The pixel circuit according to claim 12, characterized in that: The pixel circuit further includes a touch driving signal line, a first end of the touch driving transistor is connected to the touch driving signal line, a second end of the touch driving transistor is connected to the light emitting unit, and the touch driving signal line is used to transmit a touch driving signal to the light emitting unit through the touch driving transistor; Preferably, the touch drive signal line is also used to transmit a reset signal to the light emitting unit through the touch drive transistor; Preferably, in the non-light-emitting stage, the touch driving transistor is turned on and transmits the touch driving signal or the reset signal to the light-emitting unit.

14. The pixel circuit according to claim 12, characterized in that: The pixel circuit further includes a light emitting control signal line, the light emitting control signal line is connected to the control end of the light emitting control transistor and the control end of the touch driving transistor, and the light emitting control signal line is used to transmit a light emitting control signal to the light emitting control transistor and the touch driving transistor; Preferably, one of the light emitting control transistor and the touch driving transistor is an N-type transistor and the other is a P-type transistor.

15. The pixel circuit according to claim 14, characterized in that: The pixel circuit further includes a power supply voltage signal line and a driving transistor, and 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 ends of the first control transistor and 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; Preferably, in the light emitting stage, the light emitting control signal controls the first control transistor and the second control transistor to be turned on, and the driving transistor provides a driving current signal to the light emitting unit through the first control transistor to make the light emitting unit emit light.

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