Display panel and display device

Abstract

This application discloses a display panel and a display device. The display panel includes a substrate, a first electrode layer, and an isolation structure. The first electrode layer is disposed on one side of the substrate and includes a touch electrode and a plurality of spaced-apart first electrodes. The isolation structure is disposed on the side of the first electrode layer opposite to the substrate and has a plurality of isolation openings. The first electrodes are disposed within the isolation openings, and the orthographic projection of the touch electrode on the substrate lies within the orthographic projection of the isolation structure on the substrate. In the display panel provided in this application, by disposing the touch electrode and the first electrode on the same layer and setting the orthographic projection of the touch electrode on the substrate to lie within the orthographic projection of the isolation structure on the substrate, the display panel can have a smaller thickness.

Description

Technical Field

[0001] This application belongs to the field of display technology, and in particular relates to a display panel and display device. Background Technology

[0002] Organic light-emitting diode (OLED) and flat panel display devices based on light-emitting diode (LED) technologies are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body and wide range of applications, becoming the mainstream of display devices.

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

[0004] This application provides a display panel and a display device, which aim to reduce the thickness of the display panel.

[0005] An embodiment of the first aspect of this application provides a display panel, comprising: a substrate; a first electrode layer disposed on one side of the substrate, including a touch electrode and a plurality of spaced-apart first electrodes; and an isolation structure disposed on the side of the first electrode layer away from the substrate and having a plurality of isolation openings, wherein the first electrodes are disposed within the isolation openings, and the orthographic projection of the touch electrode on the substrate is located within the orthographic projection of the isolation structure on the substrate.

[0006] According to an embodiment of the first aspect of this application, the display panel includes multiple touch areas, and the touch electrode includes multiple sub-electrodes, each sub-electrode being disposed in a different touch area, and adjacent sub-electrodes being spaced apart.

[0007] According to any of the foregoing embodiments of the first aspect of this application, the isolation structure is in the form of a grid;

[0008] According to any of the foregoing embodiments of the first aspect of this application, the sub-electrode is in the form of a grid, and the sub-electrode is disposed around at least a portion of the first electrode.

[0009] According to any of the foregoing embodiments of the first aspect of this application, a plurality of sub-electrodes are spaced apart in a first direction and / or a second direction, wherein the first direction intersects the second direction.

[0010] According to any of the foregoing embodiments of the first aspect of this application, the substrate includes a plurality of touch signal lines, each touch signal line being connected to a sub-electrode via.

[0011] According to any of the foregoing embodiments of the first aspect of this application, the substrate further includes a transistor and a source / drain conductive portion located on the side of the transistor facing the first electrode. The first electrode is connected to the transistor through the source / drain conductive portion, and the touch signal line is disposed on the same layer as the source / drain conductive portion.

[0012] According to any of the foregoing embodiments of the first aspect of this application, the transistor includes a source and a drain, and a gate located on the side of the source and drain opposite to the first electrode.

[0013] According to any of the foregoing embodiments of the first aspect of this application, the source / drain conductive portion is connected to the source / drain via, and the first electrode is connected to the source / drain conductive portion via.

[0014] According to any of the foregoing embodiments of the first aspect of this application, at least a portion of the touch signal lines are extended and shaped along a first direction, and / or at least a portion of the touch signal lines are extended and shaped along a second direction.

[0015] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes a touch detection circuit, and the sub-electrode is connected to the touch detection circuit through a touch signal line. The touch detection circuit is used to detect the capacitance between the sub-electrode and ground when the target body contacts the touch area.

[0016] According to any of the foregoing embodiments of the first aspect of this application, the touch detection circuit includes a signal generation module and a capacitance detection module. The signal generation module is used to provide a square wave signal to the sub-electrode, and the capacitance detection module is used to receive the square wave signal transmitted from the sub-electrode.

[0017] According to any of the foregoing embodiments of the first aspect of this application, the isolation structure includes an isolation portion having a first end and a second end opposite to each other in the thickness direction of the display panel, the first end being located on the side of the second end facing the substrate, and the orthographic projection of the first end on the substrate being located within the orthographic projection of the second end on the substrate.

[0018] According to any of the foregoing embodiments of the first aspect of this application, the distance between the surfaces of the isolation openings on both sides of the isolation portion gradually increases.

[0019] According to any of the foregoing embodiments of the first aspect of this application, the isolation portion includes a first isolation portion and a second isolation portion disposed on the side of the first isolation portion away from the substrate, wherein the orthographic projection of the first isolation portion on the substrate is located within the orthographic projection of the second isolation portion on the substrate.

[0020] According to any of the foregoing embodiments of the first aspect of this application, the isolation structure includes an insulating layer, at least a portion of which is disposed between the first electrode and the touch electrode.

[0021] According to any of the foregoing embodiments of the first aspect of this application, at least a portion of the insulating layer is disposed on the side of the touch electrode away from the substrate.

[0022] According to any of the foregoing embodiments of the first aspect of this application, the orthogonal projection of the touch electrode on the substrate lies within the orthogonal projection of the insulating layer on the substrate.

[0023] According to any of the foregoing embodiments of the first aspect of this application, the isolation portion is disposed on the side of the insulating layer away from the substrate, or the insulating layer has a receiving groove, and at least a portion of the isolation portion is located in the receiving groove.

[0024] According to any of the foregoing embodiments of the first aspect of this application, the insulating layer has a receiving groove, at least a portion of the isolation portion is located in the receiving groove, the display panel includes a plurality of touch areas, the receiving groove is disposed between adjacent touch areas, the touch electrode includes a plurality of sub-electrodes, each sub-electrode is disposed in a different touch area, and adjacent sub-electrodes are spaced apart at the receiving groove.

[0025] According to any of the foregoing embodiments of the first aspect of this application, the insulating layer includes a first insulating portion and a second insulating portion disposed on both sides of the receiving groove facing the isolation opening, at least some sub-electrodes are disposed between the first insulating portion and the substrate, and / or, at least some sub-electrodes are disposed between the second insulating portion and the substrate.

[0026] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes a second electrode layer located on the side of the first electrode layer away from the substrate, the second electrode layer including a plurality of second electrodes, the second electrodes being located within an isolation opening.

[0027] According to any of the foregoing embodiments of the first aspect of this application, at least a portion of the isolation portion is made of a conductive material, and the second electrodes in adjacent isolation openings are connected through the isolation portion.

[0028] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes a light-emitting layer located between the first electrode layer and the second electrode layer, the light-emitting layer including a plurality of light-emitting units, the light-emitting units being located within an isolation opening.

[0029] An embodiment of the second aspect of this application provides a display device, which includes a display panel of any of the above embodiments.

[0030] In a display panel provided in this application embodiment, the display panel includes a substrate, a first electrode layer, and an isolation structure. The first electrode layer is disposed on one side of the substrate, and the isolation structure is disposed on the side of the first electrode layer opposite to the substrate and has multiple isolation openings. The isolation structure can be used to divide the sub-pixels of the display panel. The first electrode layer includes touch electrodes and multiple spaced-apart first electrodes, which are disposed within the isolation openings. The orthographic projection of the touch electrodes on the substrate lies within the orthographic projection of the isolation structure on the substrate. By setting the touch electrodes and first electrodes on the same layer, no additional layer structure is needed to arrange the touch electrodes, thereby allowing the display panel to have a smaller thickness. Furthermore, setting the touch electrodes and first electrodes on the same layer allows the touch electrodes to be fabricated in the same process step as the first electrodes, thereby simplifying the display panel fabrication process and improving the fabrication efficiency of the display panel. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a partial cross-sectional view of a display panel according to an embodiment of this application;

[0033] Figure 2 This is a partial structural diagram of an isolation structure according to an embodiment of this application;

[0034] Figure 3 This is a partial cross-sectional view of a display panel according to another embodiment of this application;

[0035] Figure 4 This is a schematic diagram of the structure of a sub-electrode according to an embodiment of this application;

[0036] Figure 5 This is a partial cross-sectional view of a display panel according to another embodiment of this application;

[0037] Figure 6 This is a partially enlarged schematic diagram of a sub-electrode according to an embodiment of this application;

[0038] Figure 7 This is a partial cross-sectional view of a display panel according to another embodiment of this application;

[0039] Figure 8 This is a schematic diagram of the connection between a sub-electrode and a touch detection circuit according to an embodiment of this application.

[0040] Explanation of reference numerals in the attached figures:

[0041] 10. Display panel; 10a. Touch area;

[0042] 100, Substrate; 110, Substrate; 120, First insulating layer; 130, Second insulating layer; 140, Third insulating layer; 150, Fourth insulating layer; 160, Driving circuit; 161, Transistor; 161a, Gate; 161b, Source / drain; 162, Storage capacitor; 162a, First electrode; 162b, Second electrode; 163, Touch signal line; 164, Source / drain conductive part;

[0043] 200, First electrode layer; 210, First electrode; 220, Touch electrode; 221, Sub-electrode; 221a, First edge electrode; 221b, Second edge electrode; 221c, Gap;

[0044] 300, Isolation structure; 300a, Isolation opening; 300b, First opening; 300c, Second opening; 300d, Third opening; 310, Isolation part; 310a, First end; 310b, Second end; 311, First isolation part; 312, Second isolation part; 320, Insulating layer; 321, Receiving groove; 322, First insulating part; 323, Second insulating part;

[0045] 400, Light-emitting layer; 410, Light-emitting unit;

[0046] 500, Second electrode layer; 510, Second electrode;

[0047] 600. Touch detection circuit;

[0048] X, thickness direction;

[0049] Y, First direction;

[0050] Z, the second direction. Detailed Implementation

[0051] The features and exemplary embodiments of various aspects of this application will now be described in detail. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this application and are not configured to limit this application. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples of this application.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0053] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.

[0054] Organic light-emitting diodes (OLEDs) and flat panel displays based on OLED technology are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body, and wide application range, becoming the mainstream display device. However, the performance of current OLED display products still needs improvement.

[0055] To address the aforementioned problems, this application provides a display panel and a display device. The following description, in conjunction with the accompanying drawings, will illustrate various embodiments of the display panel and the display device.

[0056] Figure 1 This is a partial cross-sectional view of a display panel 10 according to some embodiments of this application. In the figure, the X direction is the thickness direction X of the display panel 10, the Y direction is the first direction, and the Z direction is the second direction, wherein the first direction Y and the second direction Z intersect the thickness direction X in pairs.

[0057] This application provides a display panel 10, which may be an organic light-emitting diode (OLED) display panel.

[0058] like Figure 1As shown, an embodiment of the first aspect of this application provides a display panel 10, including: a substrate 100; a first electrode layer 200 disposed on one side of the substrate 100, including a touch electrode 220 and a plurality of spaced first electrodes 210; and an isolation structure 300 disposed on the side of the first electrode layer 200 away from the substrate 100 and having a plurality of isolation openings 300a, wherein the first electrodes 210 are disposed in the isolation openings 300a, and the orthographic projection of the touch electrode 220 on the substrate 100 is located within the orthographic projection of the isolation structure 300 on the substrate 100.

[0059] In a display panel 10 provided in this application embodiment, the display panel 10 includes a substrate 100, a first electrode layer 200, and an isolation structure 300. The first electrode layer 200 is disposed on one side of the substrate 100, and the isolation structure 300 is disposed on the side of the first electrode layer 200 opposite to the substrate 100 and has multiple isolation openings 300a. The isolation structure 300 can be used to divide the sub-pixels of the display panel 10. The first electrode layer 200 includes a touch electrode 220 and multiple spaced-apart first electrodes 210. The first electrodes 210 are disposed within the isolation openings 300a, and the orthographic projection of the touch electrode 220 on the substrate 100 lies within the orthographic projection of the isolation structure 300 on the substrate 100. By setting the touch electrode 220 and the first electrode 210 on the same layer, no additional layer structure is needed to arrange the touch electrode 220, thereby allowing the display panel 10 to have a smaller thickness. Furthermore, the fact that the touch electrode 220 and the first electrode 210 are arranged in the same layer also allows the touch electrode 220 to be fabricated in the same process step as the first electrode 210, thereby simplifying the fabrication process of the display panel 10 and improving the fabrication efficiency of the display panel 10.

[0060] Optionally, the material of the touch electrode 220 can be the same as that of the first electrode 210, so that the touch electrode 220 and the first electrode 210 can be prepared using the same processing equipment in the same process step, thereby simplifying the manufacturing process of the display panel 10 and improving the manufacturing efficiency of the display panel 10.

[0061] In some optional embodiments, the display panel 10 further includes a second electrode layer 500 located on the side of the first electrode layer 200 opposite to the substrate 100, the second electrode layer 500 including a plurality of second electrodes 510 located within the isolation opening 300a.

[0062] Optionally, the display panel 10 further includes a light-emitting layer 400 located between the first electrode layer 200 and the second electrode layer 500. The light-emitting layer 400 includes a plurality of light-emitting units 410, which are located within the isolation opening 300a. The light-emitting unit 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).

[0063] In these optional embodiments, the first electrode 210 and the second electrode 510 can be the pixel electrode layer of the display panel 10, with one of the first electrode 210 and the second electrode 510 serving as an anode and the other as a cathode to drive the light-emitting unit 410 to emit light. This application embodiment illustrates this by using the first electrode 210 as the anode of the display panel 10 and the second electrode 510 as the cathode of the display panel 10.

[0064] In some embodiments of this application, by setting the orthographic projection of the touch electrode 220 on the substrate 100 to fall within the orthographic projection of the isolation structure 300 on the substrate 100, the touch electrode 220 can be used to raise the height of the isolation structure 300, thereby improving the sub-pixel division effect of the isolation structure 300 on the display panel 10. Furthermore, this also allows the isolation structure 300 to effectively divide the sub-pixels of the display panel 10 without requiring an excessively high height, thus enabling the display panel 10 to have a smaller thickness.

[0065] Figure 2 This is a partial structural schematic diagram of an isolation structure 300 according to an embodiment of this application.

[0066] like Figure 1 and Figure 2 As shown, optionally, the isolation structure 300 can be in the form of a grid, and the hollow area in the grid-shaped isolation structure 300 can be an isolation opening 300a.

[0067] The size and arrangement of each isolation opening 300a can be configured in various ways. Optionally, the size and arrangement of each isolation opening 300a can be set according to the emission color of the light-emitting unit 410 within the isolation opening 300a. For example, the isolation opening 300a may include a first opening 300b, a second opening 300c, and a third opening 300d. The first opening 300b contains a light-emitting unit 410 for emitting blue light, the second opening 300c contains a light-emitting unit 410 for emitting red light, and the third opening 300d contains a light-emitting unit 410 for emitting green light. The area of ​​the first opening 300b can be larger than the areas of the second opening 300c and the third opening 300d. Optionally, the size and arrangement of each isolation opening 300a can also be set according to the pixel density requirements of the display panel 10.

[0068] Optionally, some of the isolation structures 300 can be extended and formed along the first direction Y, and some of the isolation structures 300 can be extended and formed along the second direction Z, so that the isolation structures 300 can be interwoven to form a mesh.

[0069] In some optional embodiments, the isolation structure 300 includes an isolation portion 310, which has a first end portion 310a and a second end portion 310b opposite each other in the thickness direction X of the display panel 10. The first end portion 310a is located on the side of the second end portion 310b facing the substrate 100, and the orthographic projection of the first end portion 310a on the substrate 100 is located within the orthographic projection of the second end portion 310b on the substrate 100.

[0070] Optionally, in the direction away from the substrate 100, the distance between the surfaces of the isolation portion 310 facing the isolation openings 300a on both sides can be gradually increased, so that the orthographic projection of the first end portion 310a of the isolation portion 310 on the substrate 100 is located within the orthographic projection of the second end portion 310b of the isolation portion 310 on the substrate 100.

[0071] In these optional embodiments, by setting the orthographic projection of the first end portion 310a of the isolation portion 310 on the substrate 100 to be within the orthographic projection of the second end portion 310b of the isolation portion 310 on the substrate 100, the second end portion 310b can block at least part of the material used to prepare the light-emitting layer 400 when the light-emitting layer 400 of the display panel 10 is deposited, thereby isolating the light-emitting layer 400 between adjacent sub-pixels and facilitating the formation of multiple spaced light-emitting units 410. This eliminates the need to set a high-precision mask when depositing the light-emitting layer 400 of the display panel 10, for example, eliminating the need to set a high-precision fine metal mask (FMM) when depositing the light-emitting layer 400, thereby reducing the manufacturing cost of the display panel 10.

[0072] Figure 3 This is a partial cross-sectional view of a display panel 10 according to another embodiment of this application.

[0073] like Figure 3 As shown, in some optional embodiments, the isolation portion 310 includes a first isolation portion 311 and a second isolation portion 312 disposed on the side of the first isolation portion 311 away from the substrate 100, wherein the orthographic projection of the first isolation portion 311 on the substrate 100 is located within the orthographic projection of the second isolation portion 312 on the substrate 100.

[0074] 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 be extended toward the isolation opening 300a relative to the first isolation portion 311.

[0075] By setting the orthographic projection of the first isolation portion 311 on the substrate 100 to be within the orthographic projection of the second isolation portion 312 on the substrate 100, the second isolation portion 312 can block at least part of the material used to prepare the light-emitting layer 400 and the material used to prepare the second electrode layer 500 when the light-emitting layer 400 and the second electrode layer 500 of the display panel 10 are deposited, thereby isolating the light-emitting layer 400 and the second electrode layer 500 between adjacent sub-pixels. This facilitates the formation of multiple spaced light-emitting units 410 and second electrodes 510, thereby eliminating the need to set a high-precision mask when depositing the light-emitting layer 400 and the second electrode layer 500 of the display panel 10. For example, it eliminates the need to set a high-precision metal mask when depositing the light-emitting layer 400 and the second electrode layer 500, thereby reducing the manufacturing cost of the display panel 10.

[0076] In some embodiments, at least a portion of the isolation portion 310 may be made of a conductive material, and the second electrodes 510 within adjacent isolation openings 300a may be connected through the isolation portion 310. For example, the first isolation portion 311 may be made of a conductive material, and the second electrodes 510 within adjacent isolation openings 300a may be connected through the first isolation portion 311. That is, the second electrodes 510 within adjacent isolation openings 300a may be interconnected through the isolation portion 310 to form a surface electrode, thereby facilitating the control of the second electrodes 510 in the display panel 10.

[0077] In other embodiments, the material of the first isolation portion 311 may include an insulating material, and the second electrodes 510 in adjacent isolation openings 300a can be mutually insulated by the first isolation portion 311, so that the second electrodes 510 in each isolation opening 300a in the display panel 10 can be independently controlled.

[0078] In some optional embodiments, the isolation structure 300 includes an insulating layer 320, at least a portion of which is disposed between the first electrode 210 and the touch electrode 220, so that the first electrode 210 is less likely to be short-circuited between the touch electrode 220, thereby improving the touch reliability of the display panel 10.

[0079] Optionally, at least a portion of the insulating layer 320 is disposed on the side of the touch electrode 220 away from the substrate 100, so that when the material of the isolation portion 310 includes a conductive material, the touch electrode 220 is less likely to be short-circuited to the second electrode 510 through the isolation portion 310, thereby improving the touch reliability of the display panel 10.

[0080] Optionally, the orthographic projection of the touch electrode 220 on the substrate 100 is located within the orthographic projection of the insulating layer 320 on the substrate 100, so that the insulating layer 320 can better cover the side of the touch electrode 220 away from the substrate 100, thereby reducing the interference of the various devices of the sub-pixels in the display panel 10 on the operation of the touch electrode 220, and further improving the operational reliability of the touch electrode 220.

[0081] In these optional embodiments, the insulating layer 320 may be disposed on the side of the first electrode layer 200 away from the substrate 100 to serve as a pixel definition layer of the display panel 10. That is, the insulating layer 320 may have a pixel opening, at least a portion of the light-emitting unit 410 and the second electrode 510 may be located inside the pixel opening, and at least a portion of the first electrode 210 may be exposed from the pixel opening to contact the light-emitting unit 410, thereby realizing the light-emitting display of the display panel 10.

[0082] In some embodiments of this application, the isolation structure 300 may only include the insulating layer 320, that is, the display panel 10 may not have an isolation portion 310, the isolation opening 300a may be disposed on the insulating layer 320, and the sub-pixels of the display panel 10 may be divided by the insulating layer 320. The light-emitting unit 410 within the isolation opening 300a may be prepared by vapor deposition using a metal mask.

[0083] In some other embodiments of this application, the isolation structure 300 may include an isolation portion 310 and an insulating layer 320, and the isolation opening 300a may be formed by the isolation portion 310 and the insulating layer 320 together. For ease of description, the following embodiments will be illustrated by taking the isolation structure 300 including the isolation portion 310 and the insulating layer 320 as an example.

[0084] In some embodiments of this application, the display panel 10 may be a display panel 10 that realizes touch positioning based on a self-capacitive touch architecture. That is, the touch electrode 220 may be specifically used as an excitation and detection electrode. When a finger touches the display panel 10 as a conductor, the capacitance on the touch electrode 220 increases, so that identification and positioning can be performed through the change in capacitance, thereby realizing the touch display of the display panel 10.

[0085] For example, when a finger touches the display panel 10 as a conductor, the touch electrode 220 will be affected by the finger and conduct some charge, causing a change in capacitance. Here, Cp is the parasitic capacitance between the touch electrode 220 and ground, and Cf is the induced capacitance between the sensing electrode generated by the human body when the finger touches the display panel 10 and ground. When the finger touches the display panel 10 as a conductor, it is equivalent to Cp and Cf being connected in parallel, making the parasitic capacitance = Cp + Cf, that is, the parasitic capacitance increases, so that the recognition and positioning can be performed through the capacitance change, thereby realizing the touch display of the display panel 10.

[0086] By setting the touch electrode 220, it can be specifically used as an excitation and detection electrode. That is, the display panel 10 is a display panel 10 that realizes touch positioning based on a self-capacitive touch architecture. This means that there is no need to set corresponding driving electrodes for excitation and receiving electrodes for detection on the display panel 10. Only the touch electrode 220 is needed to realize the touch function of the display panel 10. This eliminates the need to set too many layers to arrange the electrodes for touch function, and allows the display panel 10 to have a smaller thickness.

[0087] Figure 4 This is a partial structural schematic diagram of a sub-electrode 221 according to an embodiment of this application. In order to facilitate the display of the sub-electrode 221 and the touch area 10a in the figure, the spacing between adjacent touch areas 10a has been enlarged to a certain extent, and the number of touch areas 10a has also been reduced. Therefore, the figure is only for structural illustration and does not represent the actual accurate structure of the display panel 10.

[0088] like Figure 3 and Figure 4 As shown, in some optional embodiments, the display panel 10 includes a plurality of touch areas 10a, and the touch electrode 220 includes a plurality of sub-electrodes 221, each sub-electrode 221 being disposed in a different touch area 10a, and adjacent sub-electrodes 221 being spaced apart.

[0089] Optionally, the sub-electrode 221 is in the form of a grid, and the sub-electrode 221 is disposed around at least a portion of the first electrode 210, wherein the first electrode 210 may be located in a hollowed-out area in the grid-shaped sub-electrode 221.

[0090] Optionally, the extension path of the sub-electrode 221 may be the same as the extension path of at least a portion of the isolation structure 300. For example, a portion of the sub-electrode 221 may be extended along a first direction Y, and a portion of the sub-electrode 221 may be extended along a second direction Z, so that the sub-electrodes 221 can be interwoven to form a mesh.

[0091] Optionally, multiple sub-electrodes 221 are spaced apart in the first direction Y and / or the second direction Z, so that the display panel 10 has more uniform and sufficient sub-electrodes 221 to realize the touch function.

[0092] In these optional embodiments, by setting the sub-electrodes 221 in a grid shape, the sub-electrodes 221 can not only have a large arrangement area, but also are less likely to interfere with the operation of the first electrode 210, thereby improving the structural compactness of the display panel 10 and also improving the touch capability of the display panel 10.

[0093] In some embodiments of this application, there are various ways to arrange the relative positions between the isolation portion 310 and the insulating layer 320, and there are also various ways to arrange the corresponding sub-electrode 221.

[0094] like Figure 3 As shown, in some optional embodiments, the isolation portion 310 may be disposed on the side of the insulating layer 320 facing away from the substrate 100. Optionally, the insulating layer 320 located between adjacent touch areas 10a may not have touch electrodes 220 disposed between it and the substrate 100, that is, each sub-electrode 221 may be disconnected at the insulating layer 320 between adjacent touch areas 10a.

[0095] Figure 5 This is a partial cross-sectional view of a display panel 10 according to another embodiment of this application.

[0096] like Figure 5 As shown, in some optional embodiments, the insulating layer 320 may also have a receiving groove 321, with at least a portion of the isolation portion 310 located in the receiving groove 321, so that the isolation structure 300 is less likely to have an excessive height compared to the substrate 100, thereby effectively reducing the thickness of the display panel 10.

[0097] Optionally, the receiving groove 321 may be disposed on the periphery of each isolation opening 300a to reduce the overall thickness of the display panel 10.

[0098] Figure 6 This is a partially enlarged schematic diagram of a sub-electrode 221 according to an embodiment of this application. Figure 7 This is a partial cross-sectional view of a display panel 10 according to another embodiment of this application.

[0099] like Figure 6 and Figure 7As shown, optionally, the receiving groove 321 may also be disposed only between adjacent touch areas 10a. The touch electrode 220 includes multiple sub-electrodes 221, each sub-electrode 221 being disposed in different touch areas 10a, and adjacent sub-electrodes 221 being spaced apart at the receiving groove 321. That is, the sub-electrodes 221 on both sides of the receiving groove 321 facing the isolation opening 300a may belong to different touch areas 10a. The receiving groove 321 may be formed by the insulating layer 320 sinking and recessing at the gap 221c between adjacent sub-electrodes 221.

[0100] like Figure 7 As shown, optionally, the insulating layer 320 may include a first insulating portion 322 and a second insulating portion 323 respectively disposed on both sides of the receiving groove 321 facing the isolation opening 300a. At least a portion of the sub-electrodes 221 are disposed between the first insulating portion 322 and the substrate 100, and / or at least a portion of the sub-electrodes 221 are disposed between the second insulating portion 323 and the substrate 100, so as to make full use of the arrangement area of ​​the insulating layer 320, so that the sub-electrodes 221 can be disposed on both sides of the receiving groove 321 facing the isolation opening 300a, so that the touch electrode 220 between the isolation structure 300 and the substrate 100 can have a larger area to realize the touch function of the display panel 10, thereby improving the touch capability of the display panel 10.

[0101] For example, the portion of sub-electrode 221 located between the first insulating portion 322 and the substrate 100 is a first edge electrode 221a, and the portion of sub-electrode 221 located between the second insulating portion 323 and the substrate 100 is a second edge electrode 221b. The first edge electrode 221a and the second edge electrode 221b can belong to different sub-electrodes 221 and different touch areas 10a. Optionally, the gap 221c between adjacent sub-electrodes 221 can be located between the first edge electrode 221a and the second edge electrode 221b.

[0102] like Figure 7 As shown, in some optional embodiments, the substrate 100 may include a substrate 110 and a driving circuit 160 disposed on the substrate 110. Optionally, the substrate 100 includes a first insulating layer 120, a second insulating layer 130, and a third insulating layer 140 stacked together. Exemplarily, the driving circuit 160 may include a transistor 161, a storage capacitor 162, and driving signal lines for connecting various devices. The transistor 161 may include a semiconductor, a source / drain electrode 161b, and a gate 161a located on the side of the source / drain electrode 161b opposite to the first electrode 210. The storage capacitor 162 may include a first electrode plate 162a and a second electrode plate 162b.

[0103] As an example, the gate 161a and the first electrode 162a may be located in the first insulating layer 120, the second electrode 162b may be located in the second insulating layer 130, and the source and drain electrodes 161b may be located in the third insulating layer 140.

[0104] Optionally, the substrate 100 may include multiple touch signal lines 163, each touch signal line 163 being connected to a via of a sub-electrode 221. The touch signal lines 163 can be used to transmit touch signals; for example, they can transmit square wave signals to the sub-electrode 221 or receive square wave signals emitted from the sub-electrode 221 to realize the touch function of the display panel 10.

[0105] In some embodiments, the number of sub-electrodes 221 may be the same as the number of touch signal lines 163, meaning that the touch signal of one sub-electrode 221 may be connected by only one touch signal line 163. In other embodiments, the number of touch signal lines 163 may be greater than the number of sub-electrodes 221, meaning that the touch signal of one sub-electrode 221 may be connected by multiple touch signal lines 163, and the touch signal lines 163 connected to the same sub-electrode 221 may be connected in parallel to each other, thereby reducing the resistance during touch signal transmission.

[0106] In the embodiments of this application, the touch signal line 163 may be disposed in any layer structure between the transistor 161 and the touch electrode 220 in the substrate 100.

[0107] Optionally, the substrate 100 further includes a source-drain conductive portion 164 located on the side of the transistor 161 facing the first electrode 210. The first electrode 210 is connected to the transistor 161 through the source-drain conductive portion 164, and the touch signal line 163 is disposed on the same layer as the source-drain conductive portion 164.

[0108] Optionally, the substrate 100 may further include a fourth insulating layer 150 located on the side of the third insulating layer 140 opposite to the substrate 110, and the source / drain conductive portion 164 may be located in the fourth insulating layer 150.

[0109] Optionally, the source / drain conductive portion 164 is connected to the source / drain electrode 161b via a via, and the first electrode 210 is connected to the source / drain conductive portion 164 via a via.

[0110] Figure 8 This is a schematic diagram showing the connection between a sub-electrode 221 and a touch detection circuit 600 according to an embodiment of this application. For ease of illustration of the sub-electrode 221 in the figure, the structure of each sub-electrode 211 is simplified to a block structure.

[0111] like Figure 8 As shown, optionally, at least a portion of the touch signal line 163 extends in a first direction Y, and / or at least a portion of the touch signal line 163 extends in a second direction Z.

[0112] In these alternative embodiments, by placing the touch signal line 163 between the transistor 161 and the touch electrode 220, the arrangement of the touch signal line 163 is less susceptible to interference from the devices arranged in the substrate 100 for driving the display panel 10 to emit light, thereby improving the ease of arrangement of the touch signal line 163 and making it less likely for the touch signal and the driving signal line to interfere with each other.

[0113] like Figure 8 As shown, in some optional embodiments, the display panel 10 further includes a touch detection circuit 600, and the sub-electrode 221 is connected to the touch detection circuit 600 through the touch signal line 163. The touch detection circuit 600 is used to detect the capacitance between the sub-electrode 221 and ground when the target body contacts the touch area 10a.

[0114] Optionally, the touch detection circuit 600 includes a signal generation module and a capacitance detection module. The signal generation module is used to provide a square wave signal to the sub-electrode 221, and the capacitance detection module is used to receive the square wave signal transmitted from the sub-electrode 221.

[0115] In these optional embodiments, the touch detection circuit 600 can obtain the capacitance change at each sub-electrode 221 through the touch signal line 163. For example, when a finger touches a certain touch area 10a of the display panel 10 as a conductor, the capacitance on the sub-electrode 221 of the touch area 10a increases, so that the touch detection circuit 600 can identify and locate the finger touch position by detecting the capacitance change of the sub-electrode 221 of the touch area 10a, thereby enabling the display panel 10 to realize the touch function.

[0116] The second aspect of this application provides a display device, which includes a display panel 10 of any of the embodiments of the first aspect described above. Since the display device provided in the second aspect of this application includes the display panel 10 of any of the embodiments of the first aspect described above, the display device provided in the second aspect of this application has the beneficial effects of the display panel 10 of any of the embodiments of the first aspect described above, which will not be elaborated further here.

[0117] The display devices in this application include, but are not limited to, mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, control consoles, and other devices with display functions.

[0118] The embodiments described above are not exhaustive and do not limit the invention to specific examples. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to effectively utilize this application and its modifications. This application is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that, include: substrate; A first electrode layer is disposed on one side of the substrate and includes a touch electrode and a plurality of spaced first electrodes. An isolation structure is disposed on the side of the first electrode layer opposite to the substrate and has multiple isolation openings. The isolation structure includes an isolation portion and an insulating layer. The isolation portion has a first end and a second end opposite each other in the thickness direction of the display panel. The first end is located on the side of the second end facing the substrate, and the orthographic projection of the first end on the substrate is located within the orthographic projection of the second end on the substrate. At least a portion of the insulating layer is disposed between the first electrode and the touch electrode, and at least a portion of the insulating layer is disposed on the side of the touch electrode opposite to the substrate. The insulating portion is disposed on the side of the insulating layer opposite to the substrate. The insulating layer has a receiving groove, and at least a portion of the insulating portion is located within the receiving groove. The first electrode is disposed within the isolation opening, and the orthographic projection of the touch electrode on the substrate lies within the orthographic projection of the isolation structure on the substrate. The display panel includes multiple touch areas, the receiving groove is disposed between adjacent touch areas, the touch electrode includes multiple sub-electrodes, each sub-electrode is disposed in a different touch area, and adjacent sub-electrodes are spaced apart, and the receiving groove is formed by the insulating layer sinking and recessing in the gap between adjacent sub-electrodes.

2. The display panel according to claim 1, characterized in that, The isolation structure is grid-like.

3. The display panel according to claim 1, characterized in that, The sub-electrodes are in a grid pattern and are arranged around at least a portion of the first electrode.

4. The display panel according to claim 1, characterized in that, The plurality of said sub-electrodes are spaced apart in a first direction and / or a second direction, wherein the first direction intersects the second direction.

5. The display panel according to claim 1, characterized in that, The substrate includes multiple touch signal lines, and each touch signal line is connected to each of the sub-electrode vias.

6. The display panel according to claim 5, characterized in that, The substrate further includes a transistor and a source / drain conductive portion located on the side of the transistor facing the first electrode. The first electrode is connected to the transistor through the source / drain conductive portion, and the touch signal line is disposed on the same layer as the source / drain conductive portion.

7. The display panel according to claim 6, characterized in that, The transistor includes a source and a drain, and a gate located on the side of the source and drain opposite to the first electrode.

8. The display panel according to claim 7, characterized in that, The source / drain conductive portion is connected to the source / drain via, and the first electrode is connected to the source / drain conductive portion via.

9. The display panel according to claim 5, characterized in that, At least a portion of the touch signal lines are extended in a first direction, and / or at least a portion of the touch signal lines are extended in a second direction.

10. The display panel according to claim 5, characterized in that, The display panel also includes a touch detection circuit. The sub-electrode is connected to the touch detection circuit through the touch signal line. The touch detection circuit is used to detect the capacitance between the sub-electrode and ground when the target body contacts the touch area.

11. The display panel according to claim 10, characterized in that, The touch detection circuit includes a signal generation module and a capacitance detection module. The signal generation module is used to provide a square wave signal to the sub-electrode, and the capacitance detection module is used to receive the square wave signal transmitted from the sub-electrode.

12. The display panel according to any one of claims 1 to 11, characterized in that, The distance between the surfaces of the isolation openings on both sides of the isolation section gradually increases.

13. The display panel according to any one of claims 1 to 11, characterized in that, The isolation portion includes a first isolation portion and a second isolation portion disposed on the side of the first isolation portion away from the substrate, wherein the orthographic projection of the first isolation portion on the substrate is located within the orthographic projection of the second isolation portion on the substrate.

14. The display panel according to any one of claims 1 to 11, characterized in that, The orthographic projection of the touch electrode on the substrate lies within the orthographic projection of the insulating layer on the substrate.

15. The display panel according to any one of claims 1 to 11, characterized in that, The insulating layer includes a first insulating portion and a second insulating portion disposed on both sides of the receiving groove facing the isolation opening, at least a portion of the sub-electrodes are disposed between the first insulating portion and the substrate, and / or at least a portion of the sub-electrodes are disposed between the second insulating portion and the substrate.

16. The display panel according to any one of claims 1 to 11, characterized in that, The display panel further includes a second electrode layer located on the side of the first electrode layer opposite to the substrate. The second electrode layer includes a plurality of second electrodes, which are located within the isolation opening.

17. The display panel according to claim 16, characterized in that, At least a portion of the insulating portion is made of a conductive material, and the second electrodes in adjacent insulating openings are connected through the insulating portion.

18. The display panel according to claim 16, characterized in that, The display panel further includes a light-emitting layer located between the first electrode layer and the second electrode layer. The light-emitting layer includes a plurality of light-emitting units, which are located within the isolation opening.

19. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 18.

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