Display panel and display device

Abstract

The utility model relates to the technical field of display, and particularly provides a display panel and a display device. The display panel is provided with a display area. The display panel comprises a substrate, a display structure layer located on one side of the substrate and at least one pressure touch electrode set. Wherein the display structure layer is located in the display area. The pressure touch electrode sets are located in the display area, each pressure touch electrode set comprises at least two pressure touch electrodes, and the pressure touch electrodes and part of film layers in the display structure layer are arranged on the same layer. The pressure touch electrodes in the same pressure touch electrode group form a Wheatstone bridge and then are electrically connected with a pressure detection circuit; the pressure detection circuit is used for detecting the pressure borne by the display panel. According to the embodiment of the invention, the pressure touch electrode and part of the film layer in the display structure layer are arranged on the same layer, so that the preparation process of the display panel can be simplified, the thickness of the display panel is reduced, and the preparation cost is reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of display technologies, and particularly to a display panel and a display device. Background Art

[0002] With the rapid development of electronic technologies, electronic display devices are increasingly widely used. Among them, as a new type of display device, a touch display device has been widely applied in various fields of life and production due to its advantages such as a more user-friendly usage method, better sensitivity, and more design sense in appearance. Summary of the Invention

[0003] The present disclosure aims to solve at least one of the technical problems existing in the prior art, and provides a display panel and a display device.

[0004] To achieve the above object, the present disclosure provides a display panel having a display area; the display panel includes:

[0005] A substrate;

[0006] A display structure layer located on one side of the substrate; the display structure layer is located in the display area;

[0007] At least one pressure touch electrode group located in the display area, the pressure touch electrode group including at least two pressure touch electrodes, and the pressure touch electrodes being disposed on the same layer as some of the film layers in the display structure layer;

[0008] Each of the pressure touch electrodes in the same pressure touch electrode group forms a Wheatstone bridge therebetween.

[0009] In some embodiments, the display structure layer includes a driving circuit layer and a light-emitting device located on a side of the driving circuit layer away from the substrate; the light-emitting device includes a first electrode and a second electrode, the second electrode is electrically connected to the driving circuit layer, and the first electrode is located on a side of the second electrode away from the substrate;

[0010] The pressure touch electrode is disposed on the same layer as the first electrode, or the pressure touch electrode is disposed on the same layer as the second electrode and is insulated therefrom.

[0011] In some embodiments, the pressure touch electrode is disposed on the same layer as the first electrode; the pressure touch electrode and the first electrode have no overlap in the orthographic projection on the substrate.

[0012] In some embodiments, the pressure touch electrode is disposed on the same layer as the first electrode; the pressure touch electrode and the first electrode are an integral structure, and the integral structure is configured to receive a display driving signal during a display stage and receive a touch driving signal during a touch stage.

[0013] In some embodiments, the pressure touch electrode extends in a first direction; multiple pressure touch electrodes in the same pressure touch electrode group are arranged in a second direction; the second direction intersects with the first direction.

[0014] In some embodiments, the pressure touch electrode includes multiple pressure touch units arranged in the first direction and electrically connected in sequence; the pressure touch unit is in a broken line shape.

[0015] In some embodiments, the display area includes multiple pixel areas; the multiple pixel areas are arranged in multiple rows and multiple columns; the pixel areas do not overlap with the orthographic projection of the pressure touch electrode on the substrate.

[0016] The pressure touch unit includes multiple first wires extending in the row direction of the pixel areas and multiple second wires extending in the column direction of the pixel areas, and the multiple second wires are arranged in the row direction; alternatively, the pressure touch unit includes multiple first wires extending in the column direction of the pixel areas and multiple second wires extending in the row direction of the pixel areas, and the multiple second wires are arranged in the column direction.

[0017] Two adjacent second wires are connected by the first wire, and two adjacent second wires are respectively connected to two ends of the same first wire.

[0018] In some embodiments, there is at least one orthographic projection of the pixel area on the substrate between the orthographic projections of two adjacent second wires on the substrate.

[0019] In some embodiments, the pressure detection circuit includes a signal collector and a power supply; the pressure touch electrode group includes two pressure touch electrodes, and the two pressure touch electrodes in the same pressure touch electrode group are a first pressure touch electrode and a second pressure touch electrode.

[0020] The first end of the first pressure touch electrode is electrically connected to the first end of the signal collector and the first end of the power supply respectively.

[0021] The first end of the second pressure touch electrode is electrically connected to the second end of the signal collector and the second end of the power supply respectively.

[0022] The second end of the first pressure touch electrode is electrically connected to the first end of the second pressure touch electrode through a first resistor.

[0023] The second end of the second pressure touch electrode is electrically connected to the first end of the first pressure touch electrode through a second resistor.

[0024] The present disclosure also provides a display device, including a display panel as described in any one of the above. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0026] Figure 1 is a schematic cross-sectional structure diagram of a display panel in some embodiments;

[0027] Figure 2 is a schematic cross-sectional structure diagram of a display panel in some embodiments of the present disclosure;

[0028] Figure 3A is a schematic plan view structure diagram of a display panel in some embodiments of the present disclosure;

[0029] Figure 3B is Figure 3A a schematic plan view structure diagram of a pressure touch electrode in the illustrated embodiment;

[0030] Figure 3C is Figure 3A a schematic plan view structure diagram of a first electrode in the illustrated embodiment;

[0031] Figure 4 is a schematic plan view structure diagram of a display panel in some other embodiments of the present disclosure;

[0032] Figure 5 is a circuit connection structure diagram of two pressure touch electrodes and a pressure detection circuit constituting a Wheatstone bridge in some embodiments of the present disclosure;

[0033] Figure 6A is a schematic cross-sectional structure diagram of a display area of a display panel in some embodiments of the present disclosure;

[0034] Figure 6B is a schematic cross-sectional structure diagram of a display area of a display panel in some other embodiments of the present disclosure;

[0035] Figure 6C is a schematic cross-sectional structure diagram of a display area of a display panel in still some other embodiments of the present disclosure;

[0036] Figure 7 is a schematic structure diagram of a pressure touch electrode in some embodiments of the present disclosure;

[0037] Figure 8 is a schematic structure diagram of a pressure touch electrode in some other embodiments of the present disclosure;

[0038] Figure 9It is a partial plan view of the display panel in the display area in some embodiments of the present disclosure;

[0039] Figure 10 It is a partial plan view of the display panel in the display area in some other embodiments of the present disclosure;

[0040] Figure 11 It is a partial plan view of the display panel in the display area in some further embodiments of the present disclosure;

[0041] Figure 12 It is a partial plan view of the display panel in the display area in some still further embodiments of the present disclosure. Detailed Embodiments

[0042] The following will describe in detail the specific embodiments of the present disclosure with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustrating and explaining the present disclosure, and are not used to limit the present disclosure.

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0044] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure shall have the ordinary meanings understood by those of ordinary skill in the art to which the present disclosure pertains. The "first", "second", and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are only used to distinguish different components. Similarly, words such as "include" or "comprise" mean that the elements or items appearing before the word cover the elements or items listed after the word and their equivalents, without excluding other elements or items. "Connection" or "coupling" and similar terms are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0045] As used herein, "parallel" and "perpendicular" include the described situations and situations similar to the described situations, where the range of the similar situations is within an acceptable deviation range, and the acceptable deviation range is determined by a person of ordinary skill in the art considering the measurement under discussion and the errors associated with the measurement of a specific quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, where the acceptable deviation range for approximate parallelism can be, for example, within a deviation of 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, where the acceptable deviation range for approximate perpendicularity can also be, for example, within a deviation of 5°.

[0046] It should be understood that when a layer or element is referred to as being on another layer or substrate, it can be that the layer or element is directly on the other layer or substrate, or there can also be an intermediate layer between the layer or element and the other layer or substrate.

[0047] Exemplary embodiments are described herein with reference to cross-sectional views and / or plan views that are idealized exemplary drawings. In the drawings, the thickness of layers and regions is exaggerated for clarity. Thus, variations in the shape relative to the drawings due to, for example, manufacturing techniques and / or tolerances can be envisioned. Therefore, the exemplary embodiments should not be construed as being limited to the shapes of the regions shown herein, but include shape deviations caused, for example, by manufacturing. Thus, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shape of the regions of the device and are not intended to limit the scope of the exemplary embodiments.

[0048] Touch display devices have become the mainstream information interaction devices in electronic devices due to their simple and direct operation characteristics. Touch display devices can be classified into resistive, capacitive, infrared, ultrasonic, etc. according to the principle of sensing pressure. Among them, capacitive touch display devices have the advantages of dust prevention, scratch resistance, and high resolution, and have gradually penetrated into all aspects of people's lives. Moreover, with the continuous progress of society and technology, users' requirements for all aspects of touch display devices are also constantly increasing.

[0049] Figure 1 is a schematic cross-sectional structure diagram of a display panel in some embodiments. In related technologies, in some embodiments, as Figure 1 shown, the display panel includes a substrate 1, a display structure layer 2 on one side of the substrate 1, a packaging layer 3 on the side of the display structure layer 2 away from the substrate 1, and a touch structure layer 4 on the side of the packaging layer 3 away from the substrate 1. Optionally, the display panel further includes an insulating layer 5, a polarizing layer 6, an optically clear adhesive (OCA) 7, and a cover layer 8, which are sequentially arranged on the side of the touch structure layer 4 away from the substrate 1 and in the direction away from the substrate 1. Obviously, by Figure 1It can be seen that the touch control structure layer 4 is a separately designed film layer, and is located on both sides of the encapsulation layer 3 separately from the display structure layer 2. In some other embodiments, the touch control structure layer 4 includes a capacitive touch control film layer and a pressure touch control layer, and both the capacitive touch control film layer and the pressure touch control layer are also separately designed structures and are located on different film layers. For example, the capacitive touch control film layer is located on the side of the encapsulation layer 3 away from the substrate 1 and is used to detect the touch position of the display panel. The pressure touch control layer is located between the encapsulation layer 3 and the substrate 1 and is used to detect the magnitude of the touch pressure received by the display panel. Therefore, the overall thickness of the display panel with touch control function is relatively thick, the manufacturing process flow is relatively complex, and the cost is relatively high. In addition, the conductive layers in the display structure layer 2, such as the first electrode, the second electrode, etc. of the light-emitting device, will also interfere with the signals of the capacitive touch control film layer, resulting in problems such as inaccurate touch detection.

[0050] In order to at least alleviate or solve one of the above-mentioned technical problems, the present disclosure provides a display panel and a display device.

[0051] Figure 2 It is a schematic cross-sectional structure diagram of a display panel 100 in some embodiments of the present disclosure. Figure 3A It is a schematic plan view of a display panel 100 in some embodiments of the present disclosure. Figure 3B is Figure 3A A schematic plan view of the pressure touch control electrode 20 in the illustrated embodiment. Figure 3C is Figure 3A A schematic plan view of the first electrode 223 in the illustrated embodiment. Figure 4 It is a schematic plan view of a display panel 100 in some other embodiments of the present disclosure.

[0052] In some embodiments, as Figure 2 , Figure 3A , Figure 3B and Figure 4 shown, a display panel 100 provided by the present disclosure has a display area AA and a non-display area NA located on at least one side of the display area AA. For example, in the embodiments shown in Figure 2 , Figure 3A , Figure 3B and Figure 4 shown, the non-display area NA surrounds the display area AA.

[0053] The display panel 100 in the embodiments of the present disclosure includes: a substrate 1, a display structure layer 2, and at least one pressure touch control electrode group 10. Among them, the display structure layer 2 is located on one side of the substrate 1, and the display structure layer 2 is located in the display area AA. The pressure touch control electrode group 10 is located in the display area AA, and each pressure touch control electrode group 10 includes at least two pressure touch control electrodes 20. For example, in the embodiments shown in Figure 3A , Figure 3Band Figure 4 In the embodiment shown, each pressure touch electrode group 10 includes two pressure touch electrodes 20. Among them, the pressure touch electrode 20 is disposed on the same layer as a part of the film layers in the display structure layer 2. The "same layer setting" in the embodiments of the present disclosure means that multiple structures are formed from the same material layer through the same lithography process. That is, in the embodiments of the present disclosure, the pressure touch electrode 20 and a certain film layer structure in the display structure layer 2 are formed from the same material layer through the same lithography process.

[0054] Optionally, the number of the pressure touch electrode groups 10 can be set according to actual application requirements, and the embodiments of the present disclosure do not limit this.

[0055] Optionally, parameters such as the length and shape of each pressure touch electrode 20 can be set according to actual application requirements, and the embodiments of the present disclosure do not limit this.

[0056] After forming a Wheatstone bridge among the pressure touch electrodes 20 in the same pressure touch electrode group 10, they are electrically connected to a pressure detection circuit. The pressure detection circuit is used to detect the pressure applied to the display panel 100. For example, after forming a Wheatstone bridge between two pressure touch electrodes 20 in the same pressure touch electrode group 10, they are electrically connected to the pressure detection circuit. Optionally, after forming a Wheatstone bridge between two pressure touch electrodes 20 in the same pressure touch electrode group 10, they can be electrically connected to the pressure detection circuit through a through-wire that is in a different layer from the pressure touch electrode 20.

[0057] In the embodiments of the present disclosure, the pressure touch electrode 20 is disposed on the same layer as a part of the film layers in the display structure layer 2, which is equivalent to that the pressure touch electrode 20 no longer occupies a separate film layer. Therefore, the structure of the display panel 100 in the embodiments of the present disclosure is simpler and the thickness can be effectively reduced. Moreover, one manufacturing process can be reduced in the manufacturing process of the display panel 100. Therefore, the embodiments of the present disclosure can simplify the process and reduce costs. In addition, the pressure touch electrode 20 is disposed on the same layer as a part of the film layers in the display structure layer 2, which can also reduce problems such as the signal of the pressure touch electrode 20 being interfered due to capacitance generated between the conductive layer in the display structure layer 2 and the pressure touch electrode 20.

[0058] At the same time, in the embodiments of the present disclosure, after forming a Wheatstone bridge among the pressure touch electrodes 20 in the same pressure touch electrode group 10 and electrically connecting them to the pressure detection circuit, at this time, the pressure detection circuit can detect the magnitude of the external force acting on the display panel and the position where the external force acts through the Wheatstone bridge, so as to realize the detection of the pressure applied to the display panel.

[0059] Optionally, the substrate 1 can be a flexible substrate or a rigid substrate. In one example, the substrate 1 is a flexible substrate, which may include a first flexible material layer, a first inorganic material layer, a semiconductor layer, a second flexible material layer, and a second inorganic material layer stacked in sequence. Among them, the materials of the first flexible material layer and the second flexible material layer can each include one or more of materials such as polyimide (PI), polyethylene terephthalate (PET), and surface-treated polymer soft films. The materials of the first inorganic material layer and the second inorganic material layer can each include one or more of silicon nitride (SiNx) and silicon oxide (SiOx), etc., for improving the water and oxygen resistance of the substrate. The material of the semiconductor layer can include amorphous silicon (a-si).

[0060] Figure 5 It is a circuit connection structure diagram of two pressure touch electrodes 20 constituting a Wheatstone bridge and a pressure detection circuit in some embodiments of the present disclosure.

[0061] In some embodiments, as Figure 5 shown, the pressure detection circuit includes a signal collector 51 and a power supply 52. Among them, the signal collector 51 can measure the signal of the voltage change at both ends of the Wheatstone bridge, thereby realizing touch detection.

[0062] The two pressure touch electrodes 20 constituting the Wheatstone bridge belong to the same pressure touch electrode group 10. Specifically, as Figure 2 and Figure 5 shown, the two pressure touch electrodes 20 in the same pressure touch electrode group 10 are the first pressure touch electrode 201 and the second pressure touch electrode 202.

[0063] The first end A of the first pressure touch electrode 201 is electrically connected to the first end of the signal collector 51 and the first end of the power supply 52 respectively.

[0064] The first end C of the second pressure touch electrode 202 is electrically connected to the second end of the signal collector 51 and the second end of the power supply 52 respectively.

[0065] The second end D of the first pressure touch electrode 201 is electrically connected to the first end C of the second pressure touch electrode 202 through a first resistor R1. Among them, the first resistor R1 is a resistor with a fixed resistance value.

[0066] The second end B of the second pressure touch electrode 202 is electrically connected to the first end A of the first pressure touch electrode 201 through a second resistor R2. Among them, the second resistor R2 is a resistor with a fixed resistance value.

[0067] Optionally, one of the first end and the second end of the power supply 52 is the positive electrode and the other is the negative electrode. For example, in as Figure 5In the illustrated embodiment, the first end of the power supply 52 is the positive electrode and the second end is the negative electrode. For another example, in another example, the first end of the power supply 52 is the negative electrode and the second end is the positive electrode.

[0068] Similarly, one of the first end and the second end of the signal collector 51 is the positive electrode and the other is the negative electrode. Moreover, the positive and negative electrode attributes of the first end of the signal collector 51 and the first end of the power supply 52 are the same.

[0069] In addition, the pressure touch electrode 20 itself has a corresponding resistance value. For example, in the Figure 5 illustrated embodiment, the resistance corresponding to the first pressure touch electrode 201 is equivalently R3, and the resistance corresponding to the second pressure touch electrode 202 is equivalently Rx.

[0070] In the embodiments of the present disclosure, after the first end of the power supply 52 is electrically connected to the first end of the signal collector 51 and the second end of the power supply 52 is electrically connected to the second end of the signal collector 51, on the one hand, the power supply 52 can ensure the normal operation of the signal collector 51, and on the other hand, the power supply 52 can also provide electrical signals to the first pressure touch electrode 201 and the second pressure touch electrode 202, thereby ensuring the pressure detection of the touch received by the display panel by the signal collector 51.

[0071] Optionally, the power supply 52 is a power supply with a constant potential, that is, it can provide a constant potential for the Wheatstone bridge. The magnitude of the constant potential can be set according to the actual application situation and is not limited herein. In the embodiments of the present disclosure, using constant voltage drive can reduce the signal interference between the pressure touch electrode 20 and the conductive layer in the display structure layer 4.

[0072] Optionally, the power supply 52 can provide a constant current for the Wheatstone bridge. The magnitude of the constant current can be set according to the actual application situation and is not limited herein. That is, the pressure touch electrode in the embodiments of the present disclosure uses constant current drive. Using constant current drive in the embodiments of the present disclosure can reduce the signal interference between the pressure touch electrode 20 and the conductive layer in the display structure layer 4.

[0073] Figure 6A is a schematic cross-sectional structure diagram of the display panel 100 in the display area in some embodiments of the present disclosure. Figure 6B is a schematic cross-sectional structure diagram of the display panel 100 in the display area in some other embodiments of the present disclosure. Figure 6C is a schematic cross-sectional structure diagram of the display panel 100 in the display area in some other embodiments of the present disclosure. Among them, the display area AA includes a pixel area A1 and a spacer area A2 located between the pixel areas A1.

[0074] In some embodiments, as Figure 6A and Figure 6BAs shown, the display structure layer 2 includes a driving circuit layer 21 and a light-emitting device 22 located on one side of the driving circuit layer 21 away from the substrate 1. Among them, the light-emitting device 22 includes a first electrode 223 and a second electrode 221, and a light-emitting layer 222 located between the first electrode 223 and the second electrode 221. Among them, the second electrode 221 is electrically connected to the driving circuit layer 21, and the first electrode 223 is located on the side of the second electrode 221 away from the substrate 1. The pressure touch electrode 20 is provided on the same layer as the first electrode 223. That is, in the embodiments of the present disclosure, the pressure touch electrode 20 and the first electrode 221 are formed from the same material layer through the same patterning process, thereby simplifying the manufacturing process.

[0075] In other embodiments, as Figure 6C shown, the pressure touch electrode 20 is provided on the same layer as the second electrode 221. That is, in the embodiments of the present disclosure, the pressure touch electrode 20 and the second electrode 221 are formed from the same material layer through the same patterning process, thereby simplifying the manufacturing process.

[0076] In the embodiments of the present disclosure, the pressure touch electrode 20 is provided on the same layer as the first electrode 223 or on the same layer as the second electrode 221, that is, the pressure touch electrode 20 no longer occupies a separate film layer. Therefore, the embodiments of the present disclosure can make the structural film layer of the display panel 100 simpler and can effectively reduce the thickness. Moreover, one manufacturing process can be reduced in the manufacturing process of the display panel 100. Therefore, the embodiments of the present disclosure can simplify the process and reduce costs. Furthermore, the embodiments of the present disclosure can also reduce or avoid problems such as signal interference of the pressure touch electrode 20, the first electrode 223, the second electrode 221, etc. caused by capacitance generation between the pressure touch electrode 20 and the first electrode 223 and the second electrode 221 when the pressure touch electrode 20 is a separate film layer.

[0077] Optionally, the light-emitting device 22 may be an organic light-emitting diode OLED (Organic Light-Emitting Diode). Among them, the organic light-emitting diode OLED can emit, for example, red light, green light, blue light, or white light. The driving circuit layer 21 is electrically connected to the light-emitting device 22 and is used to provide a driving signal for the light-emitting device 22.

[0078] Optionally, the second electrode 221 may be a single-layer structure or a multi-layer structure stacked along the thickness direction of the display panel. Each layer structure may be made of materials such as metals, metal alloys, metal nitrides, conductive metal oxides, transparent conductive materials, etc.

[0079] Optionally, the light-emitting layer 222 may include small molecule organic materials or polymer molecule organic materials, may be fluorescent light-emitting materials or phosphorescent light-emitting materials, may emit red light, green light, blue light, or may emit white light.

[0080] For example, the light-emitting device 22 in the display structure layer 2 may further include other film layers. For example, the light-emitting device 22 may further include: a hole injection layer and a hole transport layer located between the second electrode 221 and the light-emitting layer 222, and an electron transport layer and an electron injection layer located between the light-emitting layer 222 and the first electrode 223. Among them, the hole injection layer, the hole transport layer, the electron transport layer, and the electron injection layer may all be single-layer structures or multi-layer structures stacked along the thickness direction of the display panel.

[0081] Optionally, the first electrode 223 may be made of metal, metal alloy, metal nitride, conductive metal oxide, transparent conductive material, etc.

[0082] Optionally, the light-emitting device 22 may adopt a top-emission structure or a bottom-emission structure. When adopting the top-emission structure, the second electrode 221 includes a conductive material with light reflection performance or includes a light reflection film, and the first electrode 223 includes a transparent or semi-transparent conductive material. When adopting the bottom-emission structure, the first electrode 223 is made of a conductive material with light reflection performance or includes a light reflection film, and the second electrode 221 includes a transparent or semi-transparent conductive material.

[0083] Optionally, the display structure layer 2 includes a plurality of light-emitting devices 22. The first electrodes 223 of the respective light-emitting devices 22 may be connected together to form a first electrode layer. Connecting the first electrodes 223 of the respective light-emitting devices 22 together is beneficial to simplifying the process.

[0084] Optionally, as Figure 6A , Figure 6B and Figure 6C shown, the driving circuit layer 21 includes a pixel circuit, and the pixel circuit may include a plurality of thin film transistors and at least one storage capacitor. Figure 6A and Figure 6B In the embodiments shown, only one thin film transistor 211 and one storage capacitor 215 are schematically shown.

[0085] As Figure 6A , Figure 6B and Figure 6C shown, the thin film transistor 211 includes an active layer 230, a gate 220, and a source-drain electrode layer. Among them, the source-drain electrode layer includes a drain 210 and a source 240. Among them, the gate 220 is located between the source-drain electrode layer and the active layer 212. In fact, the positional relationship among the active layer 230, the gate 220, the drain 210, and the source 240 may be set according to actual circumstances, and the embodiments of the present disclosure do not limit this. The second electrode 221 is electrically connected to one of the drain 210 and the source 240. For example, in the embodiments shown in Figure 6A and Figure 6B shown, the second electrode 221 is electrically connected to the drain 210.

[0086] As Figure 6A 、 Figure 6B and Figure 6C shown, the storage capacitor 215 includes a first electrode plate 260 and a second electrode plate 250 located on a side of the first electrode plate 260 away from the substrate 1. Optionally, the first electrode plate 260 may be disposed on the same layer as the gate 220 of the thin film transistor 211, and the second electrode plate 250 may be disposed on the same layer as the source-drain electrode layer of the thin film transistor 211.

[0087] Optionally, the active layer 31 includes a channel portion and source connection portions and drain connection portions located on both sides of the channel portion. The drain connection portion is connected to the drain 210 of the thin film transistor 211, and the source connection portion is connected to the source 240 of the thin film transistor 211. Both the source connection portion and the drain connection portion may be doped with impurities having a higher impurity concentration than that of the channel portion (for example, N-type impurities or P-type impurities). The channel portion faces the gate 220 of the thin film transistor 211. When the voltage signal applied to the gate 220 reaches a certain value, a carrier path is formed in the channel portion to turn on the drain 210 and the source 240 of the thin film transistor 211.

[0088] Optionally, as Figure 6A 、 Figure 6B and Figure 6C shown, the driving circuit layer 21 further includes a gate insulating layer 212 located between the gate 220 and the active layer 230, an interlayer dielectric layer 213 located between the source-drain electrode layer and the gate 220, and a passivation layer 214 and a planarization layer 216 located between the second electrode 221 and the source-drain electrode layer. Among them, the passivation layer 214 is located between the planarization layer 216 and the source-drain electrode layer. Among them, the second electrode 221 is electrically connected to the drain 210 through a via hole penetrating the passivation layer 214 and the planarization layer 216. The drain 210 and the source 240 are respectively electrically connected to the active layer 230 through via holes penetrating the interlayer dielectric layer 213.

[0089] Optionally, the gate 220, the drain 210, and the source 240 may all include a metal material, for example, may include any one or more of silver (Ag), copper (Cu), aluminum (Al), titanium (Ti), and molybdenum (Mo). And, the gate 220, the drain 210, and the source 240 may all be single-layer structures or may be multi-layer structures stacked along the thickness direction of the display panel. Among them, each layer may include one or more of the aforementioned metals. Optionally, when the gate 220, the drain 210, or the source 240 includes multiple metals, it may be an alloy material, such as aluminum neodymium alloy (AlNd) or molybdenum niobium alloy (MoNb), or may also be a multi-layer stacked structure, such as Ti / Al / Ti, etc.

[0090] Optionally, the active layer 230 may be made of one or more of the following materials: amorphous indium gallium zinc oxide (a-IGZO), zinc oxide nitride (ZnON), indium zinc tin oxide (IZTO), amorphous silicon (a-Si), polycrystalline silicon (p-Si), hexathiophene, polythiophene, etc.

[0091] Optionally, both the gate insulating layer 212 and the interlayer dielectric layer 213 may be a single-layer structure or a multi-layer structure stacked along the thickness direction of the display panel. Each layer may be prepared by combining any one or more of silicon oxide (SiOx), silicon nitride (SiNx), and silicon oxynitride (SiON).

[0092] Optionally, the material of the passivation layer 214 may include a compound of silicon, for example, at least one of silicon oxide, silicon nitride, or silicon oxynitride.

[0093] Optionally, the planarization layer 216 is made of an organic insulating material. For example, the organic insulating material may include one or more of resin materials such as polyimide, epoxy resin, acrylic, polyester, photoresist, polyacrylate, polyamide, and silicone. Among them, the organic insulating material may also be elastic. For example, the organic insulating material may include one or more of elastic materials such as urethane and thermoplastic polyurethane (TPU).

[0094] Optionally, as Figure 6A , Figure 6B and Figure 6C shown, the display structure layer 2 further includes a pixel defining layer 23 located on the side of the driving circuit layer 21 away from the substrate 1. The pixel defining layer 23 defines a pixel opening. At least part of the light-emitting device 22 is located within the pixel opening. For example, in the embodiments shown in Figure 6A and Figure 6B , the second electrode 221 is located within the pixel opening, the light-emitting layer 222 is located within the pixel opening, a part of the first electrode 223 is located within the pixel opening, and another part of the first electrode 223 is located on the side of the pixel defining layer 23 away from the substrate 1.

[0095] Optionally, the material of the pixel defining layer 23 may include one or more of organic insulating materials such as polyimide, polyphthalimide, polyphthalamide, acrylic resin, benzocyclobutene, or phenolic resin.

[0096] In the embodiments of the present disclosure, the pressure touch electrode 20 and the first electrode 223 are arranged on the same layer, so that the pressure touch electrode 20 can be prepared while preparing the first electrode 223 of the light-emitting device 22. Therefore, the embodiments of the present disclosure can simplify the manufacturing process and reduce the manufacturing cost. Moreover, in the embodiments of the present disclosure, the pressure detection circuit adopts constant current driving, which can ensure the stability of the signals of the pressure detection circuit and reduce the signal interference between the first electrode 223 and the pressure touch electrode 20.

[0097] In some embodiments, as Figure 6A shown, the pressure touch electrode 20 and the first electrode 223 are arranged on the same layer, and the orthographic projections of the pressure touch electrode 20 and the first electrode 223 on the substrate 1 do not overlap. That is, the pressure touch electrode 20 and the first electrode 223 are electrically insulated. In this case, the first electrode 223 is not a continuous planar structure of the entire layer, but a patterned structure. Among them, the pressure touch electrode 20 is located in the spacer region A2 and on the side of the pixel defining layer 23 away from the substrate 1, and the first electrode 223 is located in the pixel region A1, and at least part of the first electrode 223 is located in the pixel opening.

[0098] In the embodiments of the present disclosure, both the pressure touch electrode 20 and the first electrode 223 can work independently. For example, the pressure touch electrode 20 can work alone, the first electrode 223 can also work alone, and the pressure touch electrode 20 and the first electrode 223 can also work simultaneously.

[0099] For example, in Figure 3B and Figure 4 embodiments, in the display area AA, in addition to the pressure touch electrode 20 shown, there are other idle areas, and the first electrode 223 is located in the idle area. Of course, those skilled in the art can clearly determine that the first electrode 223 and the pressure touch electrode 20 are prepared simultaneously, that is, obtained using the same mask plate in the same manufacturing process.

[0100] In some embodiments, as Figure 6B shown, the pressure touch electrode 20 and the first electrode 223 are arranged on the same layer, and the pressure touch electrode 20 and the first electrode 223 are an integral structure. Among them, the integral structure is used to receive the display driving signal during the display stage and the touch driving signal during the touch stage. That is to say, during the touch stage, the integral structure serves as the pressure touch electrode 20. During the display stage, the integral structure serves as the first electrode 223.

[0101] In the embodiments of the present disclosure, the pressure touch electrode 20 and the first electrode 223 are of an integral structure. It can be understood that the pressure touch electrode 20 and the first electrode 223 are the same electrode. Moreover, this electrode receives a display driving signal during the display stage to enable the display panel to display a picture, and receives a touch driving signal during the touch stage to ensure the touch function of the display panel.

[0102] Alternatively, in the embodiments of the present disclosure, the pressure touch electrode 20 and the first electrode 223 are of an integral structure. It can also be understood that when preparing the first electrode 223 of the light-emitting device 22, the first electrode 223 is patterned so that the morphology of the first electrode 223 meets the morphological requirements of the pressure touch electrode 20 in the embodiments of the present disclosure, so that the first electrode 223 can also be used as the pressure touch electrode 20.

[0103] In the embodiments of the present disclosure, the integral structure receives a display driving signal during the display stage, and this display driving signal can be a cathode signal; that is, the display panel 100 has a picture display function at this time. Moreover, the integral structure receives a touch driving signal during the touch stage, and the display panel 100 has a touch function at this time, so that the touch function and the display function of the display substrate 100 in the embodiments of the present disclosure are independently completed in different stages. Therefore, the embodiments of the present disclosure can further avoid problems such as short circuit that may be caused when the pressure touch electrode 20 and the first electrode 223 are two electrically insulated electrodes, and signal interference and other problems generated when the pressure touch electrode 20 and the first electrode 223 are two electrically insulated electrodes and are working simultaneously.

[0104] For example, Figure 3A 、 Figure 3B and Figure 4 The pressure touch electrode 20 shown is also the first electrode 223, and receives a display driving signal during the display stage and a touch driving signal during the touch stage.

[0105] Specifically, in Figure 3B the blank area other than the pressure touch electrode 20 can be used to prepare the first electrode 223. Figure 3C shows the plan view of the first electrode 223 prepared in the blank area other than the pressure touch electrode 20 in Figure 3B . Figure 3B Combined with Figure 3C is Figure 3A the structure shown in. Among them, Figure 3A the pressure touch electrode 20 and the first electrode 223 in

[0106] can be of an integral structure or electrically insulated from each other, and can be selected according to actual needs to meet the needs of different display devices. Figure 6CAs shown, the pressure touch electrode 20 and the second electrode 221 are disposed on the same layer, and the orthographic projections of the pressure touch electrode 20 and the second electrode 221 on the substrate 1 do not overlap. That is, the pressure touch electrode 20 and the second electrode 221 are electrically insulated. Further, the pressure touch electrode 20 is located in the spacer region A2, the second electrode 221 is located in the pixel region A1, and the pressure touch electrode 20 is located on the side of the pixel defining layer 23 close to the substrate 1.

[0107] In some embodiments, as Figure 3A , Figure 3B and Figure 4 shown, the pressure touch electrode 20 extends in the first direction. The plurality of pressure touch electrodes 20 in the pressure touch electrode group 10 are arranged in the second direction. The second direction intersects the first direction.

[0108] In fact, in the embodiments of the present disclosure, the pressure touch electrode 20 may have no extension direction, or may have an extension direction, and the extension direction of the pressure touch electrode 20 may be arbitrary. The extension directions of different pressure touch electrodes 20 may be the same or different. The plurality of pressure touch electrode groups 10 may have no arrangement direction, or may have an arrangement direction, and the arrangement direction of the plurality of pressure touch electrode groups 10 may be arbitrary. Whether the pressure touch electrodes 20 in the same pressure touch electrode group 10 are arranged in a certain direction and the setting of the arrangement direction can also be selected according to actual needs. In different pressure touch electrode groups 10, the arrangement directions of the pressure touch electrodes 20 may be the same or different. The lengths of each pressure touch electrode 20 may be the same or different, and the embodiments of the present disclosure do not limit this.

[0109] To simplify the manufacturing process and reduce costs, in the embodiments of the present disclosure, the pressure touch electrode 20 extends in the first direction, and the plurality of pressure touch electrodes 20 in the same pressure touch electrode group 10 are arranged in the second direction. Wherein, the second direction intersects the first direction.

[0110] Optionally, the first direction and the second direction are perpendicular.

[0111] Further optionally, one of the first direction and the second direction may be the extension direction of the display panel 100, and the other is the direction perpendicular to the extension direction of the display panel. For example, in the embodiments as Figure 3A and Figure 3B shown, the display panel 100 extends in the second direction. At this time, the first direction is perpendicular to the extension direction of the display panel 100.

[0112] In fact, the first direction may be any direction. For example, in the embodiment as Figure 4 shown, the included angle between the first direction and the extension direction of the display panel 100 is an acute angle.

[0113] Figure 7 It is a schematic structural diagram of the pressure touch electrode 20 in some embodiments of the present disclosure. Figure 8 It is a schematic structural diagram of the pressure touch electrode 20 in some other embodiments of the present disclosure.

[0114] In some embodiments, such as Figure 3A , Figure 3B , Figure 4 , Figure 7 and Figure 8 shown, the pressure touch electrode 20 includes a plurality of pressure touch units 30 arranged along a first direction and electrically connected in sequence; wherein, the pressure touch unit 30 is in a zigzag shape.

[0115] In the embodiments of the present disclosure, setting the pressure touch unit 30 in a zigzag shape can increase the area ratio of the pressure touch unit 30 in the display area AA, thereby ensuring the sensing ability and sensitivity of the pressure touch unit 30 to the pressure received at various positions of the display panel 100.

[0116] Optionally, the pressure touch unit 30 has a first connection end 31 and a second connection end 32.

[0117] Optionally, the first connection end 31 and the second connection end 32 of the pressure touch unit 30 can be arranged on the same side of the corresponding pressure touch unit 30. At this time, the schematic structural diagram of each pressure touch unit 30 can be as shown in Figure 7 shown.

[0118] Optionally, the first connection end 31 and the second connection end 32 of the pressure touch unit 30 can be arranged on different sides of the corresponding pressure touch unit 30. For example, the first connection end 31 and the second connection end 32 of the pressure touch unit 30 can be located on opposite sides of the pressure touch unit 30. At this time, the schematic structural diagram of the pressure touch unit 30 can be as shown in Figure 8 shown.

[0119] In the embodiments of the present disclosure, the positions of the first connection end 31 and the second connection end 32 in each pressure touch unit 30 of the same pressure touch electrode 20 can be the same or different. For example, in the pressure touch electrode 20 shown in Figure 7 shown, the first connection end 31 and the second connection end 32 of each pressure touch unit 30 are both located on the same side of the corresponding pressure touch unit 30. For another example, in a certain pressure touch electrode 20, the first connection end 31 and the second connection end 32 of at least one pressure touch unit 30 are both located on the same side of the corresponding pressure touch unit 30, and the first connection end 31 and the second connection end 32 of at least one pressure touch unit 30 are respectively located on different sides of the corresponding pressure touch unit 30.

[0120] Figure 9It is a partial plan view of a display panel in a display area in some embodiments of the present disclosure. Figure 10 It is a partial plan view of a display panel in a display area in other embodiments of the present disclosure. Figure 11 It is a partial plan view of a display panel in a display area in still other embodiments of the present disclosure. Figure 12 It is a partial plan view of a display panel in a display area in yet other embodiments of the present disclosure.

[0121] In some embodiments, as Figures 9 to 12 shown, the display area AA includes a plurality of pixel areas A1 and a spacer area A2 located between the pixel areas A1. The color of the light emitted by the pixel area A1 can be red, blue, green, white, etc., which is not limited in the present disclosure. The orthographic projection of the pixel area A1 on the substrate 1 covers the orthographic projection of the pixel opening defined by the pixel defining layer 8 on the substrate 1. Among them, a plurality of pixel areas A1 are arranged in multiple rows and columns. And, the orthographic projection of the pixel area A1 and the pressure touch electrode 20 on the substrate 1 do not overlap. It can be understood that the orthographic projection of the pixel area A1 and the pressure touch unit 30 on the substrate 1 do not overlap. The orthographic projection of the spacer area A2 on the substrate 1 covers the orthographic projection of the pressure touch electrode 20 on the substrate 1.

[0122] In the embodiments of the present disclosure, the orthographic projection of the pixel area A1 and the pressure touch electrode 20 on the substrate 1 do not overlap, which can ensure the light transmission effect of the display area AA.

[0123] In some embodiments, as Figure 9 and Figure 10 shown, the pressure touch unit 30 includes a plurality of first wires 301 extending along the row direction of the pixel areas A1 and a plurality of second wires 302 extending along the column direction of the pixel areas A1. Among them, the arrangement direction of the plurality of second wires 302 is the row direction in which the pixel areas A1 are arranged. Adjacent two second wires 302 are connected by the first wire 301, and adjacent two first wires 301 are respectively connected to both ends of the same second wire 302.

[0124] In some embodiments, as Figure 11 and Figure 12As shown in the figure, the pressure touch unit 30 includes a plurality of first wires 301 extending in the column direction arranged along the pixel region A1 and a plurality of second wires 302 extending in the row direction arranged along the pixel region A1. Among them, the arrangement direction of the plurality of second wires 302 is the column direction in which the pixel region A1 is arranged. Two adjacent second wires 302 are connected by the first wire 301, and two adjacent first wires 301 are respectively connected to both ends of the same second wire 302. Further, by making the arrangement direction of the plurality of second wires 302 be the column direction or the row direction in which the pixel region A1 is arranged, connecting two adjacent second wires 302 through the first wire 301, and respectively connecting two adjacent first wires 301 to both ends of the same second wire 302, it can further avoid the pixel region A1 during the process of connecting the first wire 301 and the second wire 302 to each other, thereby avoiding the influence of the pressure touch electrode 20 on the light transmission effect of the display area AA.

[0125] Actually, in any embodiment of the present disclosure, the shapes of the respective pressure touch electrodes 20 and the shapes of the respective pressure touch units 30 can be set according to the actual needs of the user to adapt to the requirements of different display panels 100. For example, in the embodiment as Figure 10 shown, the pressure touch unit 30 is integrally in the shape of a comb. Among them, the second wires 302, the first wires 301, and the second wires 302 connected in sequence form the teeth of the comb shape. The arrangement direction of the plurality of teeth is the same as the arrangement direction of the plurality of second wires 302.

[0126] By setting the extension directions of the first wire 301 and the second wire 302 and the arrangement direction of the second wire 302 in the embodiments of the present disclosure, the structure of the pressure touch unit 30 can be simplified, thereby facilitating the arrangement of the pressure touch unit 30 in the display area. Further, the arrangement of the pressure touch electrodes 20 can be simplified, thereby reducing the overall manufacturing difficulty and cost.

[0127] In some embodiments, as Figures 9 to 12 shown, there is at least one projection of the pixel region A1 on the substrate 1 between the projections of two adjacent second wires 302 on the substrate 1.

[0128] In the embodiments of the present disclosure, by making there be at least one projection of the pixel region A1 on the substrate 1 between the projections of two adjacent second wires 302 on the substrate 1.

[0129] In some embodiments, as Figure 2 shown, the display panel 100 further includes a packaging layer 3 located on the side of the display structure layer 2 away from the substrate 1. The packaging layer 3 covers the pixel defining layer 23 and the light emitting device 22 and is used to package the light emitting device 22 to prevent the light emitting device 22 from being eroded by moisture and / or oxygen in the external environment.

[0130] Optionally, the material of the encapsulation layer 3 is an insulating material.

[0131] Optionally, as Figure 6A and Figure 6B shown, the encapsulation layer 3 includes a first sub-encapsulation layer 31, a second sub-encapsulation layer 32, and a third sub-encapsulation layer 33 that are sequentially arranged on the side of the light-emitting device 22 away from the substrate 1 and in a direction away from the substrate 1.

[0132] In some embodiments, the materials of the first sub-encapsulation layer 31 and the third sub-encapsulation layer 33 may both include inorganic materials, and the material of the second sub-encapsulation layer 32 may include organic materials. Optionally, the first sub-encapsulation layer 31 and the third sub-encapsulation layer 33 may be prepared from at least one of dense inorganic materials such as silicon oxynitride (SiON), silicon oxide (SiOx), and silicon nitride (SiNx). The second sub-encapsulation layer 32 may be made of a polymer material containing a desiccant and / or capable of blocking water vapor. For example, a polymer resin is used, which can relieve the stress of the first sub-encapsulation layer 31 and the third sub-encapsulation layer 33, and may also include a water-absorbing material such as a desiccant to absorb substances such as water and oxygen that invade the interior.

[0133] The present disclosure also provides a display device, including the display panel 100 in any embodiment of the present disclosure.

[0134] The principle of the display device in the embodiments of the present disclosure for solving problems is similar to that of the display panel 100 in any of the foregoing embodiments of the present disclosure, so it will not be elaborated here. The display device in the embodiments of the present disclosure has a high integration degree and is relatively thin and light.

[0135] It should be noted that the display panel and the display device in the embodiments of the present invention may further include other structures.

[0136] For example, as Figure 2 shown, an insulating layer 5, a polarizing layer 6, an optical adhesive 7, and a cover plate layer 8 may also be sequentially arranged on the side of the encapsulation layer 3 away from the substrate 1 in a direction away from the substrate.

[0137] Similar to the above, other structures can be determined according to actual needs, and will not be elaborated in the embodiments of the present disclosure and are not limited herein.

[0138] In some embodiments of the present disclosure, two pressure touch electrodes form a Wheatstone bridge. Therefore, touch detection can be achieved by detecting the signal of the voltage change at both ends of the Wheatstone bridge. Among them, the power supply in the Wheatstone bridge can use a power supply with adjustable output potential, and a constant current is provided for the Wheatstone bridge, that is, the Wheatstone bridge is driven by a constant current. Therefore, even when the pressure touch electrode 20 and the first electrode 223 are different electrodes and work simultaneously, the touch detection process will not be affected by the noise of the display structure layer 2. For example, the pressure touch electrode 20 will not be interfered by the noise of the first electrode 223 in the display structure layer 2, thus ensuring the accuracy of the measurement.

[0139] In other embodiments of the present disclosure, the pressure touch electrode 20 and the first electrode 223 are of an integrated structure, or the pressure touch electrode 20 and the second electrode 221 are of an integrated structure. At this time, the integrated structure receives a touch driving signal during the touch stage and a display driving signal during the display stage. That is to say, the first electrode 223 and the pressure touch electrode 20 do not work simultaneously, or the second electrode 221 and the pressure touch electrode 20 do not work simultaneously. Therefore, the touch detection process will not generate noise interference to the display structure layer 2, and at the same time, the first electrode 221 and the second electrode 223 in the display structure layer 2 will not generate noise interference to the touch detection process during operation, thus ensuring the accuracy of the measurement.

[0140] In the embodiments of the present disclosure, the display device may be an OLED display device, and may be specifically applied to display devices such as tablet computers and mobile phones.

[0141] The display device in the embodiments of the present disclosure may specifically include any device or product with a display function. For example, the display device may be a smart phone, a mobile phone, an e-book reader, a desktop computer (PC), a laptop PC, a netbook PC, a personal digital assistant (PDA), a portable multimedia player (MP), a digital audio player, a mobile medical device, a camera, a wearable device (such as a head-mounted device, electronic clothing, an electronic bracelet, an electronic necklace, electronic accessories, an electronic tattoo, or a smart watch), a television, etc.

[0142] In some embodiments, the present disclosure also provides a method for manufacturing a display panel, including the following steps:

[0143] Step S10: Provide a substrate 1.

[0144] Step S20: Form a display structure layer 2 and a pressure touch electrode group 10 located in the display area on one side of the substrate 1. Among them, the pressure touch electrode group 10 includes at least two pressure touch electrodes 20, and a Wheatstone bridge is formed between two pressure touch electrodes 20 in the same pressure touch electrode group 10. Moreover, the pressure touch electrode 20 is formed synchronously with some film layers in the display structure layer 2.

[0145] In some embodiments, the step of forming the display structure layer 2 includes:

[0146] Step S21, forming the driving circuit layer 21 in the display structure layer 2.

[0147] Step S22, forming the second electrode 221 of the light-emitting device 22 on the side of the driving circuit layer 21 away from the substrate 1. Among them, the second electrode 221 is electrically connected to the driving circuit layer 21.

[0148] Step S23, forming the first electrode 223 on the side of the second electrode 221 away from the substrate 1.

[0149] Among them, the pressure touch electrode 20 is formed synchronously with the first electrode 223 in step S23, or the pressure touch electrode 20 is formed synchronously with the second electrode 221 in step S22.

[0150] In the embodiment of the present disclosure, the pressure touch electrode 20 is formed in the display structure layer 2 and is formed synchronously with the first electrode 223 or the second electrode 221, so that touch detection can be realized without increasing the thickness of the display panel. At the same time, the manufacturing process can be simplified and the manufacturing cost can be reduced.

[0151] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present disclosure. However, the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present disclosure, and these modifications and improvements are also regarded as the protection scope of the present disclosure.

Claims

1. A display panel having a display area; characterized in that: The display panel comprises: substrate substrate; A display structure layer located on one side of the base substrate; the display structure layer is located in the display area; At least one pressure touch electrode group located in the display area, the pressure touch electrode group includes at least two pressure touch electrodes, and the pressure touch electrodes are arranged in the same layer as part of the film layer in the display structure layer; A Wheatstone bridge is formed between the pressure touch electrodes in the same pressure touch electrode group.

2. The display panel according to claim 1, characterized in that: The display structure layer includes a driving circuit layer and a light emitting device located on a side of the driving circuit layer away from the base substrate; the light emitting device includes a first electrode and a second electrode, the second electrode is electrically connected to the driving circuit layer, and the first electrode is located on a side of the second electrode away from the base substrate; The pressure touch electrode is disposed in the same layer as the first electrode; or, the pressure touch electrode is disposed in the same layer as the second electrode and is insulated from each other.

3. The display panel according to claim 2, characterized in that: The pressure touch electrode is arranged in the same layer as the first electrode; and the orthographic projections of the pressure touch electrode and the first electrode on the base substrate do not overlap.

4. The display panel according to claim 2, characterized in that: The pressure touch electrode is arranged in the same layer as the first electrode; the pressure touch electrode and the first electrode are an integrated structure, and the integrated structure is used to receive a display drive signal in a display stage and to receive a touch drive signal in a touch stage.

5. The display panel according to any one of claims 1 to 4, characterized in that: The pressure touch electrodes extend along a first direction; a plurality of the pressure touch electrodes in the same pressure touch electrode group are arranged along a second direction; and the second direction intersects with the first direction.

6. The display panel according to claim 5, characterized in that: The pressure touch electrode includes a plurality of pressure touch units arranged along the first direction and electrically connected in sequence; the pressure touch units are in a zigzag shape.

7. The display panel according to claim 6, characterized in that: The display area includes a plurality of pixel areas; the plurality of pixel areas are arranged in a plurality of rows and columns; the pixel areas and the orthographic projections of the pressure touch electrodes on the substrate do not overlap; The pressure touch unit includes a plurality of first wires extending along the row direction of the pixel areas and a plurality of second wires extending along the column direction of the pixel areas, and the plurality of second wires are arranged along the row direction; or, the pressure touch unit includes a plurality of first wires extending along the column direction of the pixel areas and a plurality of second wires extending along the row direction of the pixel areas, and the plurality of second wires are arranged along the column direction; Two adjacent second conductive lines are connected via the first conductive line, and two adjacent second conductive lines are respectively connected to two ends of the same first conductive line.

8. The display panel according to claim 7, characterized in that: There is at least one orthographic projection of the pixel region on the substrate between the orthographic projections of two adjacent second conductive lines on the substrate.

9. The display panel according to any one of claims 1 to 4, characterized in that: The pressure detection circuit includes a signal collector and a power supply; the pressure touch electrode group includes two pressure touch electrodes, and the two pressure touch electrodes in the same pressure touch electrode group are a first pressure touch electrode and a second pressure touch electrode; The first end of the first pressure touch electrode is electrically connected to the first end of the signal collector and the first end of the power supply respectively; The first end of the second pressure touch electrode is electrically connected to the second end of the signal collector and the second end of the power supply respectively; The second end of the first pressure touch electrode is electrically connected to the first end of the second pressure touch electrode via a first resistor; The second end of the second pressure touch electrode is electrically connected to the first end of the first pressure touch electrode through a second resistor.

10. A display device, characterized in that: The invention comprises the display panel as claimed in any one of claims 1 to 9.

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