Display panel and display device

Abstract

The invention discloses a display panel and a display device.The display panel comprises a substrate, a first electrode layer and an isolation structure, and the first electrode layer is arranged on one side of the substrate and comprises a touch electrode and a plurality of first electrodes arranged at intervals; the isolation structure is arranged on the side, away from the substrate, of the first electrode layer and provided with a plurality of isolation openings, the first electrodes are arranged in the isolation openings, and the orthographic projection of the touch electrodes on the substrate is located in the orthographic projection of the isolation structure on the substrate. In the display panel provided by the embodiment of the invention, the touch electrode and the first electrode are arranged on the same layer, and the orthographic projection of the touch electrode on the substrate is arranged in the orthographic projection of the isolation structure on the substrate, so that the display panel can have a relatively small thickness.

Description

Technical Field

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

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

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

[0004] Embodiments of the present application provide a display panel and a display device, aiming to reduce the thickness of the display panel.

[0005] An embodiment of the first aspect of the present application provides a display panel, comprising: a substrate; a first electrode layer, arranged on one side of the substrate, comprising a touch electrode and a plurality of first electrodes arranged at intervals; an isolation structure, arranged on a side of the first electrode layer away from the substrate and having a plurality of isolation openings, wherein the first electrode is arranged in the isolation opening, 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 implementation of the first aspect of the present application, the display panel includes a plurality of touch control areas, the touch control electrode includes a plurality of sub-electrodes, each sub-electrode is disposed in a different touch control area, and adjacent sub-electrodes are spaced apart.

[0007] According to any of the aforementioned implementations of the first aspect of the present application, the isolation structure is in a grid shape;

[0008] According to any of the aforementioned embodiments of the first aspect of the present application, the sub-electrodes are in a grid shape, and the sub-electrodes are arranged around at least a portion of the first electrode.

[0009] According to any of the aforementioned embodiments of the first aspect of the present application, the plurality of sub-electrodes are arranged at intervals in the first direction and / or the second direction, wherein the first direction intersects with the second direction.

[0010] According to any of the aforementioned implementations of the first aspect of the present application, the substrate includes a plurality of touch signal lines, and each touch signal line is connected to each sub-electrode via hole.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, the substrate also 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 arranged on the same layer as the source-drain conductive portion.

[0012] According to any of the aforementioned implementations of the first aspect of the present application, the transistor includes a source and a drain, and a gate located on a side of the source and the drain away from the first electrode.

[0013] According to any of the aforementioned implementations of the first aspect of the present 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 aforementioned implementations of the first aspect of the present application, at least a portion of the touch signal lines are extended along the first direction, and / or at least a portion of the touch signal lines are extended along the second direction.

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

[0016] According to any of the aforementioned implementations of the first aspect of the present application, the touch detection circuit includes a signal generating module and a capacitance detection module, the signal generating 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 aforementioned embodiments of the first aspect of the present application, the isolation structure includes an isolation portion, the isolation portion having a first end and a second end relative 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 aforementioned embodiments of the first aspect of the present application, the distance between the surfaces of the isolation portion toward the isolation openings on both sides thereof gradually increases.

[0019] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation portion includes a first isolation portion and a second isolation portion arranged on a side of the first isolation portion away from the substrate, and 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 aforementioned implementations of the first aspect of the present application, the isolation structure includes an insulating layer, and at least a portion of the insulating layer is disposed between the first electrode and the touch electrode.

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

[0022] According to any of the aforementioned implementations of the first aspect of the present application, the orthographic projection of the touch electrode on the substrate is located within the orthographic projection of the insulating layer on the substrate.

[0023] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation portion is arranged on a side of the insulating layer facing away from the substrate, or the insulating layer is provided with a receiving groove, and at least part of the isolation portion is located in the receiving groove.

[0024] According to any of the aforementioned embodiments of the first aspect of the present application, the insulating layer is provided with a receiving groove, at least part of the isolating portion is located in the receiving groove, the display panel includes a plurality of touch areas, the receiving groove is arranged between adjacent touch areas, the touch electrode includes a plurality of sub-electrodes, each sub-electrode is arranged in a different touch area, and adjacent sub-electrodes are spaced apart at the receiving groove.

[0025] According to any of the aforementioned embodiments of the first aspect of the present application, the insulating layer includes a first insulating portion and a second insulating portion respectively arranged on both sides of the accommodating groove facing the isolation opening, at least part of the sub-electrodes are arranged between the first insulating portion and the substrate, and / or, at least part of the sub-electrodes are arranged between the second insulating portion and the substrate.

[0026] According to any of the aforementioned implementations of the first aspect of the present application, the display panel further includes a second electrode layer located on a side of the first electrode layer away from the substrate, the second electrode layer includes a plurality of second electrodes, and the second electrodes are located in the isolation openings.

[0027] According to any of the aforementioned embodiments of the first aspect of the present application, the material of at least a portion of the isolation portion includes a conductive material, and the second electrodes in adjacent isolation openings are connected via the isolation portion.

[0028] According to any of the aforementioned embodiments of the first aspect of the present 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 includes a plurality of light-emitting units, and the light-emitting units are located in the isolation openings.

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

[0030] In a display panel provided in an embodiment of the present application, the display panel includes a substrate, a first electrode layer and an isolation structure, the first electrode layer is arranged on one side of the substrate, the isolation structure is arranged on the side of the first electrode layer away from the substrate and has a plurality of isolation openings, and the isolation structure can be used to divide the sub-pixels of the display panel. Among them, the first electrode layer includes a touch electrode and a plurality of first electrodes arranged at intervals, the first electrode is arranged in the isolation opening, and the orthographic projection of the touch electrode on the substrate is located within the orthographic projection of the isolation structure on the substrate. By setting the touch electrode and the first electrode in the same layer, there is no need to set an additional layer structure to arrange the touch electrode, so that the display panel can have a smaller thickness. In addition, the touch electrode and the first electrode are arranged in the same layer, so that the touch electrode can be prepared in the same process step as the first electrode, thereby simplifying the preparation process of the display panel and improving the preparation efficiency of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

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

[0033] Figure 2 It is a partial structural schematic diagram of an isolation structure of an embodiment of the present application;

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

[0035] Figure 4 is a schematic structural diagram of a sub-electrode in an embodiment of the present application;

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

[0037] Figure 6 is a partially enlarged schematic diagram of a sub-electrode in an embodiment of the present application;

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

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

[0040] Description of reference numerals:

[0041] 10. display panel; 10a. touch area;

[0042] 100, substrate; 110, underlay; 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 and drain; 162, storage capacitor; 162a, first electrode plate; 162b, second electrode plate; 163, touch signal line; 164, source and 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 portion; 310a, first end portion; 310b, second end portion; 311, first isolation portion; 312, second isolation portion; 320, insulation layer; 321, receiving groove; 322, first insulation portion; 323, second insulation portion;

[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, second direction. DETAILED DESCRIPTION

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

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0053] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0054] Organic light-emitting diodes and flat-panel display devices based on technologies such as light-emitting diodes have the advantages of high image quality, power saving, thin body and wide application range, and are widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc., becoming the mainstream of display devices. However, the performance of current OLED display products needs to be improved.

[0055] In order to solve the above problems, embodiments of the present application provide a display panel and a display device. Various embodiments of the display panel and the display device will be described below in conjunction with the accompanying drawings.

[0056] Figure 1 1 is a partial cross-sectional view of a display panel 10 of some embodiments of the present application. The X direction in the figure is the thickness direction X of the display panel 10, the Y direction in the figure is the first direction, and the Z direction in the figure is the second direction, wherein the first direction Y, the second direction Z and the thickness direction X intersect each other.

[0057] An embodiment of the present 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 the present application provides a display panel 10, comprising: a substrate 100; a first electrode layer 200, arranged on one side of the substrate 100, comprising a touch electrode 220 and a plurality of first electrodes 210 arranged at intervals; an isolation structure 300, arranged on a side of the first electrode layer 200 away from the substrate 100 and having a plurality of isolation openings 300a, wherein the first electrode 210 is arranged in the isolation opening 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 an embodiment of the present application, 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. The isolation structure 300 is disposed on the side of the first electrode layer 200 away from the substrate 100 and has a plurality of 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 a plurality of first electrodes 210 disposed at intervals. The first electrode 210 is disposed in the isolation opening 300a. 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. By arranging the touch electrode 220 and the first electrode 210 in the same layer, it is not necessary to arrange an additional layer structure to arrange the touch electrode 220, so that the display panel 10 can have a smaller thickness. Furthermore, the touch electrode 220 and the first electrode 210 are disposed in the same layer, so that the touch electrode 220 and the first electrode 210 can be manufactured 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 .

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

[0061] In some optional embodiments, the display panel 10 further includes a second electrode layer 500 located on a side of the first electrode layer 200 facing away from the substrate 100 . The second electrode layer 500 includes a plurality of second electrodes 510 . The second electrodes 510 are located in the isolation openings 300 a .

[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, and the light emitting units 410 are located in the isolation opening 300a. The light emitting units 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 may be a pixel electrode layer of the display panel 10, one of the first electrode 210 and the second electrode 510 may be used as an anode, and the other may be used as a cathode to drive the light-emitting unit 410 to emit light. In the embodiment of the present application, the first electrode 210 is used as the anode of the display panel 10, and the second electrode 510 is used as the cathode of the display panel 10 for illustration.

[0064] In some embodiments of the present application, by setting the orthographic projection of the touch electrode 220 on the substrate 100 to be located 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, so as to improve the effect of the isolation structure 300 on dividing the sub-pixels of the display panel 10. In addition, the isolation structure 300 can better divide the sub-pixels of the display panel 10 without setting an excessively high height, so that the display panel 10 can have a smaller thickness.

[0065] Figure 2 It is a schematic diagram of a partial structure of an isolation structure 300 according to an embodiment of the present application.

[0066] like Figure 1 and Figure 2 As shown, optionally, the isolation structure 300 may be in a grid shape, and the hollow areas in the grid-shaped isolation structure 300 may be isolation openings 300a.

[0067] There are many ways to set the size and arrangement shape of each isolation opening 300a. Optionally, the size and arrangement shape of each isolation opening 300a can be set according to the light color of the light-emitting unit 410 in 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 is provided with a light-emitting unit 410 for emitting blue light, the second opening 300c is provided with a light-emitting unit 410 for emitting red light, and the third opening 300d is provided with a light-emitting unit 410 for emitting green light. The setting area of ​​the first opening 300b may be larger than the setting areas of the second opening 300c and the third opening 300d. Optionally, the size and arrangement shape of each isolation opening 300a can also be set according to the pixel arrangement density requirements of the display panel 10.

[0068] Optionally, part of the isolation structure 300 may be extended along the first direction Y, and part of the isolation structure 300 may be extended along the second direction Z, so that the isolation structure 300 may be interwoven to form a mesh.

[0069] In some optional embodiments, the isolation structure 300 includes an isolation portion 310, the isolation portion 310 having a first end 310a and a second end 310b relative to each other in the thickness direction X of the display panel 10, the first end 310a is located on the side of the second end 310b facing the substrate 100, and the orthographic projection of the first end 310a on the substrate 100 is located within the orthographic projection of the second end 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 toward the isolation opening 300a on both sides thereof may gradually increase so that the orthographic projection of the first end 310a of the isolation portion 310 on the substrate 100 is located within the orthographic projection of the second end 310b of the isolation portion 310 on the substrate 100.

[0071] In these optional embodiments, by setting the orthographic projection of the first end 310a of the isolation portion 310 on the substrate 100 to be within the orthographic projection of the second end 310b of the isolation portion 310 on the substrate 100, when the light-emitting layer 400 of the display panel 10 is evaporated, the second end 310b can block at least a portion of the material used to prepare the light-emitting layer 400 to separate the light-emitting layer 400 between adjacent sub-pixels, and can facilitate the formation of a plurality of spaced light-emitting units 410, so that when the light-emitting layer 400 of the display panel 10 is evaporated, there is no need to set a mask with high precision, for example, when the light-emitting layer 400 is evaporated, there is no need to set a high-precision metal mask (Fine Metal Mask, FMM) to reduce the production cost of the display panel 10.

[0072] Figure 3 It is a partial cross-sectional view of a display panel 10 according to another embodiment of the present 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 arranged on the side of the first isolation portion 311 facing away from the substrate 100, and 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 arranged to extend relative to the first isolation portion 311 toward the isolation opening 300a.

[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, when the light-emitting layer 400 and the second electrode layer 500 of the display panel 10 are evaporated, the second isolation portion 312 can block at least a portion of the material used to prepare the light-emitting layer 400 and the material used to prepare the second electrode layer 500, so as to separate the light-emitting layer 400 and the second electrode layer 500 between adjacent sub-pixels, and can facilitate the formation of a plurality of spaced light-emitting units 410 and the second electrode 510, so that when the light-emitting layer 400 and the second electrode layer 500 of the display panel 10 are evaporated, there is no need to set a mask with high precision, for example, when the light-emitting layer 400 and the second electrode layer 500 are evaporated, thereby reducing the production cost of the display panel 10.

[0076] In some embodiments, the material of at least part of the isolation portion 310 may include a conductive material, and the second electrodes 510 in adjacent isolation openings 300a may be connected through the isolation portion 310. For example, the material of the first isolation portion 311 may include a conductive material, and the second electrodes 510 in adjacent isolation openings 300a may be connected through the first isolation portion 311, that is, the second electrodes 510 in adjacent isolation openings 300a may be connected to each other through the isolation portion 310 to form a surface electrode, so as to facilitate 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 insulating material, and the second electrodes 510 in adjacent isolation openings 300a may be insulated from each other 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 , and at least a portion of the insulating layer 320 is disposed between the first electrode 210 and the touch electrode 220 , so that a short circuit is less likely to occur between the first electrode 210 and the touch electrode 220 , thereby improving the touch reliability of the display panel 10 .

[0079] Optionally, at least part of the insulating layer 320 is disposed on the side of the touch electrode 220 facing away from the substrate 100, so that when the material of the isolation portion 310 includes a conductive material, the touch electrode 220 is not easily short-circuited with 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 facing away from the substrate 100, so as to reduce the interference of various devices of the sub-pixels in the display panel 10 on the operation of the touch electrode 220, thereby further improving the working 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 facing away from the substrate 100 to serve as a pixel definition layer of the display panel 10, that is, the insulating layer 320 may be provided with a pixel opening, at least a portion of the light-emitting unit 410 and the second electrode 510 may be located within 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 a light-emitting display of the display panel 10.

[0082] In some embodiments of the present application, the isolation structure 300 may only include the insulating layer 320, that is, the display panel 10 may not be provided with the isolation portion 310, the isolation opening 300a may be provided in the insulating layer 320, and the sub-pixels of the display panel 10 may be divided by the insulating layer 320. Among them, the light-emitting unit 410 in the isolation opening 300a may be prepared by evaporation by providing a metal mask.

[0083] In some other embodiments of the present 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. For ease of description, the following embodiments are described by taking the isolation structure 300 including the isolation portion 310 and the insulating layer 320 as an example.

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

[0085] For example, when a finger as a conductor touches the display panel 10, the touch electrode 220 will be affected by the finger to derive a portion of the charge, thereby causing a capacitance change. Wherein, Cp is the parasitic capacitance between the touch electrode 220 and the ground, and Cf is the inductive capacitance between the inductive electrode and the ground generated by the human body when the finger touches. When the finger as a conductor touches the display panel 10, it is equivalent to Cp and Cf being connected in parallel, so that 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 electrode for excitation and detection, that is, the display panel 10 is a display panel 10 that realizes touch positioning based on a self-capacitive touch architecture, so that there is no need to set corresponding driving electrodes for excitation and receiving electrodes for detection on the display panel 10, and only the touch electrode 220 needs to be set to realize the touch function of the display panel 10, so that there is no need to set too many layer structures to arrange the electrodes for the touch function, so that the display panel 10 can have a smaller thickness.

[0087] Figure 4 2 is a partial structural diagram of a sub-electrode 221 of an embodiment of the present 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 is enlarged to a certain extent in the figure, and the number of touch areas 10a is also reduced. Therefore, the figure only serves as a structural schematic, and it cannot 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 regions 10 a , and the touch electrode 220 includes a plurality of sub-electrodes 221 , each sub-electrode 221 is disposed in a different touch region 10 a , and adjacent sub-electrodes 221 are disposed at intervals.

[0089] Optionally, the sub-electrode 221 is in a grid shape, and the sub-electrode 221 is disposed around at least a portion of the first electrode 210 . The first electrode 210 may be located in a hollow region of the grid-shaped sub-electrode 221 .

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

[0091] Optionally, a plurality of sub-electrodes 221 are arranged at intervals in the first direction Y and / or the second direction Z, so that the display panel 10 has relatively uniform and sufficient sub-electrodes 221 to realize the touch function.

[0092] In these optional embodiments, the sub-electrodes 221 are arranged in a grid shape so that the sub-electrodes 221 have a larger layout area and 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 the present application, there are multiple ways to arrange the relative positions of the isolation portion 310 and the insulating layer 320 , and there are multiple ways to arrange the corresponding sub-electrodes 221 .

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

[0095] Figure 5 It is a partial cross-sectional view of a display panel 10 according to yet another embodiment of the present application.

[0096] like Figure 5 As shown, in some optional embodiments, the insulating layer 320 may also be provided with a receiving groove 321, and at least part of the isolation portion 311 is located in the receiving groove 321, so that the isolation structure 300 is less likely to have an excessively large height compared to the substrate 100, thereby being able to better reduce the thickness of the display panel 10.

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

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

[0099] like Figure 6 and Figure 7As shown, optionally, the receiving groove 321 can also be only arranged between adjacent touch control areas 10a, and the touch control electrode 220 includes a plurality of sub-electrodes 221, each of which is arranged in a different touch control area 10a, and adjacent sub-electrodes 221 are arranged at intervals at the receiving groove 321, that is, the sub-electrodes 221 on both sides of the receiving groove 321 facing the isolation opening 300a can belong to different touch control areas 10a. The receiving groove 321 can be formed by the insulating layer 320 sinking and concave 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 which are respectively arranged on both sides of the accommodating groove 321 toward the isolation opening 300a, and at least a portion of the sub-electrode 221 is arranged between the first insulating portion 322 and the substrate 100, and / or, at least a portion of the sub-electrode 221 is arranged between the second insulating portion 323 and the substrate 100, so as to more fully utilize the layout area of ​​the insulating layer 320, so that the sub-electrode 221 can be arranged on both sides of the accommodating groove 321 toward the isolation opening 300a, so that the touch electrode 220 between the isolation structure 300 and the substrate 100 can have a larger area for realizing the touch function of the display panel 10, thereby being able to better improve the touch capability of the display panel 10.

[0101] For example, part of the sub-electrodes 221 located between the first insulating portion 322 and the substrate 100 is a first edge electrode 221a, and part of the sub-electrodes 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 may belong to different sub-electrodes 221 and to different touch control areas 10a. Optionally, the gap 221c between adjacent sub-electrodes 221 may 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 that are stacked. Exemplarily, the driving circuit 160 may include a transistor 161, a storage capacitor 162, and a driving signal line for connecting various devices. The transistor 161 may include a semiconductor, a source and drain 161b, and a gate 161a located on the side of the source and drain 161b away from the first electrode 210. The storage capacitor 162 may include a first plate 162a and a second plate 162b.

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

[0104] Optionally, the substrate 100 may include a plurality of touch signal lines 163, each of which is connected to a via hole of each sub-electrode 221. The touch signal line 163 may be used to conduct a touch signal, for example, the touch signal line 163 may be used to transmit a square wave signal to the sub-electrode 221, or receive a square wave signal from the sub-electrode 221, so as 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, that is, 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, that is, 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 when the touch signal is transmitted.

[0106] In the embodiment of the present 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 via 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 further includes a fourth insulating layer 150 located on a side of the third insulating layer 140 away from 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 161 b via a via hole, and the first electrode 210 is connected to the source-drain conductive portion 164 via a via hole.

[0110] Figure 8 2 is a schematic diagram of the connection between a sub-electrode 221 and a touch detection circuit 600 according to an embodiment of the present application. In order to facilitate the display 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 is extended along the first direction Y, and / or at least a portion of the touch signal line 163 is extended along the second direction Z.

[0112] In these optional embodiments, by setting the touch signal line 163 between the transistor 161 and the touch electrode 220, the layout of the touch signal line 163 is not easily interfered by the device arranged in the substrate 100 for driving the display panel 10 to emit light and display, thereby improving the convenience of arranging 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 also includes a touch detection circuit 600, and the sub-electrode 221 is connected to the touch detection circuit 600 via a touch signal line 163, and the touch detection circuit 600 is used to detect the capacitance between the sub-electrode 221 and the ground when the target body contacts the touch area 10a.

[0114] Optionally, the touch detection circuit 600 includes a signal generating module and a capacitance detecting module, the signal generating module is used to provide a square wave signal to the sub-electrode 221 , and the capacitance detecting 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 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 embodiment of the second aspect of the present application provides a display device, and the display device includes the display panel 10 of any embodiment of the first aspect. Since the display device provided by the embodiment of the second aspect of the present application includes the display panel 10 of any embodiment of the first aspect, the display device provided by the embodiment of the second aspect of the present application has the beneficial effects of the display panel 10 of any embodiment of the first aspect, which will not be repeated here.

[0117] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0118] According to the embodiments of the present application as above, these embodiments do not describe all the details in detail, nor do they limit the invention to specific embodiments. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can make good use of the present application and the modifications based on the present application. The present application is only limited by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that: include: substrate; A first electrode layer, disposed on one side of the substrate, comprising a touch electrode and a plurality of first electrodes disposed at intervals; An isolation structure is arranged on a side of the first electrode layer away from the substrate and has a plurality of isolation openings, The first electrode is disposed in the isolation opening, and the orthographic projection of the touch electrode on the substrate is located within the orthographic projection of the isolation structure on the substrate.

2. The display panel according to claim 1, characterized in that: The display panel includes a plurality of touch control areas, the touch control electrode includes a plurality of sub-electrodes, each of the sub-electrodes is disposed in a different touch control area, and adjacent sub-electrodes are disposed at intervals; Preferably, the isolation structure is in a grid shape; Preferably, the sub-electrodes are in a grid shape, and the sub-electrodes are arranged around at least a portion of the first electrode; Preferably, the plurality of sub-electrodes are arranged at intervals in a first direction and / or a second direction, wherein the first direction intersects with the second direction.

3. The display panel according to claim 2, characterized in that: The substrate comprises a plurality of touch signal lines, each of the touch signal lines being connected to each of the sub-electrode via holes; Preferably, the substrate further comprises a transistor and a source-drain conductive portion located on a side of the transistor facing the first electrode, the first electrode is connected to the transistor via the source-drain conductive portion, and the touch signal line is arranged in the same layer as the source-drain conductive portion; Preferably, the transistor comprises a source and a drain, and a gate located on a side of the source and the drain away from the first electrode; Preferably, the source-drain conductive portion is connected to the source-drain via hole, and the first electrode is connected to the source-drain conductive portion via hole; Preferably, at least part of the touch signal lines are formed by extending along a first direction, and / or at least part of the touch signal lines are formed by extending along a second direction.

4. The display panel according to claim 3, characterized in that: The display panel further includes a touch detection circuit, the sub-electrode is connected to the touch detection circuit via the touch signal line, and the touch detection circuit is used to detect the capacitance between the sub-electrode and the ground when the target body contacts the touch area.

5. The display panel according to claim 4, characterized in that: The touch detection circuit includes a signal generating module and a capacitance detecting module. The signal generating module is used to provide a square wave signal to the sub-electrode, and the capacitance detecting module is used to receive the square wave signal transmitted from the sub-electrode.

6. The display panel according to any one of claims 1 to 5, characterized in that: The isolation structure comprises an isolation portion, wherein the isolation portion has a first end portion and a second end portion opposite to each other in a thickness direction of the display panel, the first end portion is located on a side of the second end portion facing the substrate, and an orthographic projection of the first end portion on the substrate is located within an orthographic projection of the second end portion on the substrate; Preferably, the distance between the surfaces of the isolation portion toward the isolation openings on both sides thereof gradually increases; Preferably, the isolation portion includes a first isolation portion and a second isolation portion provided on a side of the first isolation portion away from the substrate, and an orthographic projection of the first isolation portion on the substrate is located within an orthographic projection of the second isolation portion on the substrate.

7. The display panel according to any one of claims 1 to 5, characterized in that: The isolation structure includes an insulating layer, at least a portion of which is disposed between the first electrode and the touch electrode; Preferably, at least part of the insulating layer is disposed on a side of the touch electrode facing away from the substrate; Preferably, the orthographic projection of the touch electrode on the substrate is located within the orthographic projection of the insulating layer on the substrate.

8. The display panel according to claim 7, characterized in that: The isolation structure comprises an isolation portion, wherein the isolation portion has a first end and a second end opposite to each other in the thickness direction of the display panel, the first end is located at a side of the second end facing the substrate, an orthographic projection of the first end on the substrate is located within an orthographic projection of the second end on the substrate, the isolation portion is arranged at a side of the insulating layer away from the substrate, or an accommodating groove is provided in the insulating layer, and at least a portion of the isolation portion is located in the accommodating groove; Preferably, the insulating layer is provided with the receiving groove, at least part of the isolating portion is located in the receiving groove, the display panel includes a plurality of touch control areas, the receiving groove is arranged between adjacent touch control areas, the touch control electrode includes a plurality of sub-electrodes, each of the sub-electrodes is arranged in a different touch control area, and adjacent sub-electrodes are arranged at intervals at the receiving groove; Preferably, the insulating layer includes a first insulating portion and a second insulating portion respectively arranged on both sides of the accommodating groove facing the isolation opening, at least part of the sub-electrode is arranged between the first insulating portion and the substrate, and / or at least part of the sub-electrode is arranged between the second insulating portion and the substrate.

9. The display panel according to claim 8, characterized in that: The display panel further comprises a second electrode layer located at a side of the first electrode layer away from the substrate, the second electrode layer comprises a plurality of second electrodes, and the second electrodes are located in the isolation opening; Preferably, at least part of the material of the isolation portion includes a conductive material, and the second electrodes in adjacent isolation openings are connected through the isolation portion; Preferably, 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, and the light-emitting units are located in the isolation opening.

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

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