Display panel and display apparatus

Abstract

Provided in the embodiments of the present application are a display panel and a display apparatus. The display panel comprises: a substrate; a pixel definition layer, which is provided on the substrate, wherein the pixel definition layer comprises a pixel definition portion and a pixel opening, which is enclosed by the pixel definition portion; an isolation structure, which is provided on the substrate, wherein the isolation structure comprises an electrically-conductive portion; and a functional layer, which comprises a first electrode and a touch control electrode, wherein at least part of the first electrode is located within the pixel opening, the touch control electrode is located on the side of the electrically-conductive portion that is away from the substrate, the first electrode and the touch control electrode are insulated and spaced apart from each other, the first electrode and the electrically-conductive portion are insulated and spaced apart from each other, and the touch control electrode and the electrically-conductive portion are electrically connected to each other. By means of arranging a touch control electrode and a first electrode on the same functional layer, the present application can simplify the structure and preparation process of a display panel.

Description

Display panel and display device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202310793115.X, filed on June 30, 2023, entitled “Display Panel and Display Device,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of display devices, and in particular to a display panel and a display device. Background Art

[0004] Organic Light-Emitting Diodes (OLEDs) are active light-emitting devices. Compared to traditional liquid crystal displays (LCDs), OLED display technology does not require a backlight and is self-luminous. OLEDs utilize a thin film of organic material and a glass substrate. When an electric current flows through it, the organic material emits light. Therefore, OLED display panels can significantly save energy, can be made lighter and thinner, can withstand a wider range of temperature changes than LCD display panels, and have a wider viewing angle. OLED display panels are expected to become the next generation of flat-panel display technology after LCDs and are currently one of the most popular flat-panel display technologies.

[0005] Existing OLED display devices include a touch module, which is usually an external touch module. The external touch patch is attached to the surface of the display screen, which makes the structure of the display device complex and increases the thickness.

[0006] Summary of the Invention

[0007] Embodiments of the present application provide a display panel and a display device, aiming to simplify the structure of the display panel.

[0008] An embodiment of the first aspect of the present application provides a display panel, which includes: a substrate; a pixel definition layer, which is arranged on the substrate, the pixel definition layer including a pixel defining portion and a pixel opening formed by the pixel defining portion; an isolation structure, which is arranged on the substrate, the isolation structure including a conductive portion; a functional layer, which includes a first electrode and a touch electrode, at least a portion of the first electrode is located in the pixel opening, the touch electrode is located on the side of the conductive portion facing away from the substrate, the first electrode and the touch electrode are insulated and spaced apart from each other, the first electrode and the conductive portion are insulated and spaced apart from each other, and the touch electrode and the conductive portion are electrically connected to each other.

[0009] An embodiment of the second aspect of the present application further provides a display device, comprising a display panel according to any one of the above-mentioned embodiments of the first aspect.

[0010] In the display panel provided in the embodiment of the present application, the display panel includes a substrate, a pixel definition layer, an isolation structure and a functional layer, the pixel definition layer includes a pixel defining portion and a pixel opening, and the pixel opening is used to set a light-emitting unit to realize the light-emitting display of the display panel. The functional layer includes a first electrode and a touch electrode, at least part of the first electrode is located at the pixel opening to drive the light-emitting unit to emit light, and the touch electrode is arranged on the conductive portion so that the isolation structure can isolate the touch electrode and the first electrode from each other, and the first electrode and the touch electrode are not easily short-circuited. The touch electrode and the first conductive portion are electrically connected to each other, which can reduce the impedance of the touch electrode and improve the touch effect of the display panel. By arranging the touch electrode and the first electrode in the same functional layer, the present application can simplify the structure and preparation process of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG1 is a schematic plan view of a display panel provided in an embodiment of the present application;

[0012] FIG2 is a cross-sectional view of FIG1 at AA;

[0013] FIG3 is a plan view of a display panel provided in another embodiment of the present application;

[0014] FIG4 is a cross-sectional view at BB in FIG3 ;

[0015] FIG5 is a cross-sectional view at BB in FIG3 in another example;

[0016] FIG6 is a cross-sectional view of a point BB in FIG3 in another example;

[0017] FIG7 is a cross-sectional view at BB in FIG3 in another example;

[0018] FIG8 is a cross-sectional view at BB in FIG3 in another example;

[0019] FIG9 is a schematic diagram of a partial structure of a display panel provided in yet another embodiment of the present application;

[0020] FIG10 is a schematic diagram of a partial structure of a display panel provided in yet another embodiment of the present application;

[0021] FIG11 is a schematic diagram of a partial structure of a display panel provided in another embodiment of the present application;

[0022] FIG. 12 is a cross-sectional view taken at BB in FIG. 3 in yet another example. DETAILED DESCRIPTION

[0023] In order to better understand the present application, the display panel and the display device of the embodiment of the present application are described in detail below with reference to Figures 1 to 25.

[0024] Please refer to FIG. 1 and FIG. 2 . FIG. 1 is a schematic plan view of a display panel provided in an embodiment of the present application; FIG. 2 is a cross-sectional view taken at AA in FIG. 1 .

[0025] As shown in Figures 1 and 2, an embodiment of the first aspect of the present application provides a display panel, which includes a substrate 100, a pixel definition layer 200, an isolation structure 300 and a functional layer 400. The pixel definition layer 200 is arranged on the substrate 100, and the pixel definition layer 200 includes a pixel defining portion 210 and a pixel opening 220 formed by the pixel defining portion 210; the isolation structure 300 is arranged on the substrate 100, and the isolation structure 300 includes a conductive portion 310; the functional layer 400 includes a first electrode 410 and a touch electrode 420, at least a portion of the first electrode 410 is located in the pixel opening 220, the touch electrode 420 is located on the side of the conductive portion 310 away from the substrate 100, the first electrode 410 and the touch electrode 420 are arranged to be insulated from each other, the first electrode 410 and the conductive portion 310 are arranged to be insulated from each other, and the touch electrode 420 and the conductive portion 310 are electrically connected to each other.

[0026] In the display panel provided in the embodiment of the present application, the display panel includes a substrate 100, a pixel definition layer 200, an isolation structure 300, and a functional layer 400. The pixel definition layer 200 includes a pixel defining portion 210 and a pixel opening 220. The pixel opening 220 is used to accommodate a light-emitting unit 230 to achieve light-emitting display of the display panel. The functional layer 400 includes a first electrode 410 and a touch electrode 420. At least a portion of the first electrode 410 is located in the pixel opening 220 to drive the light-emitting unit 230 to emit light. The touch electrode 420 is disposed on the conductive portion 310, so that the isolation structure 300 can isolate the touch electrode 420 from the first electrode 410, making it less likely for the first electrode 410 and the touch electrode 420 to short-circuit. The touch electrode 420 and the conductive portion 310 are electrically connected to each other, which can reduce the impedance of the touch electrode 420, improve the touch effect of the display panel, and reduce the parasitic capacitance formed between the conductive portion 310 and the touch electrode 420, which may affect the normal operation of the touch electrode 420. In the present application, the touch electrode 420 and the first electrode 410 are arranged on the same functional layer 400 , thereby simplifying the structure and manufacturing process of the display panel.

[0027] Optionally, the substrate 100 may include a substrate and an array substrate, and the array substrate may include a driving circuit. For example, the array substrate may include a first signal line layer, a second signal line layer, and a third signal line layer arranged on one side of the substrate and stacked. An insulating layer is provided between adjacent signal line layers. Exemplarily, the pixel driving circuit provided on the array substrate includes a transistor and a storage capacitor. The transistor includes a semiconductor, a gate, a source, and a drain. The storage capacitor includes a first plate and a second plate. As an example, the gate and the first plate may be located in the first signal line layer, the second plate may be located in the second signal line layer, and the source and drain may be located in the third signal line layer.

[0028] Optionally, during the preparation of the display panel, a functional material layer can be deposited on the isolation structure 300 and the pixel definition layer 200, with the portion falling outside the isolation structure 300 forming a first electrode 410, and the portion falling on the isolation structure 300 forming a touch electrode 420, so that the first electrode 410 and the touch electrode 420 can be prepared and formed in the same process step, which can simplify the preparation process of the display panel.

[0029] In some optional embodiments, the isolation structure 300 also includes an insulating portion 320, the insulating portion 320 includes a connecting opening 321 and a first section 322 located on the side of the conductive portion 310 facing away from the substrate 100, the first section 322 is arranged around at least a portion of the connecting opening 321, and the touch electrode 420 is electrically connected to each other via the connecting opening 321 and the conductive portion 310.

[0030] In these optional embodiments, the isolation structure 300 further includes an insulating portion 320 located on the side of the conductive portion 310 facing away from the substrate 100, which can better insulate the first electrode 410 and the touch electrode 420 from each other through the isolation structure 300. The insulating portion 320 includes a communication opening 321 and a first sub-portion 322. The communication opening 321 can electrically connect the touch electrode 420 and the conductive portion 310, and the first sub-portion 322 can ensure mutual insulation between the first electrode 410 and the touch electrode 420.

[0031] There are many ways to set the material of the insulating part 320. For example, the insulating part 320 may include an organic insulating layer and / or an inorganic insulating layer, that is, the material of the insulating part 320 may include an organic insulating material and / or an inorganic insulating material.

[0032] Optionally, the display panel further includes a carrier layer, which is located on a side of the pixel definition layer 200 facing away from the substrate 100. At least a portion of the insulating portion 320 and the carrier layer are formed from the same material. There are various ways to configure the carrier layer. For example, the carrier layer may include at least one of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer.

[0033] In these optional embodiments, at least a portion of the insulating portion 320 and the carrier layer are made of the same material, allowing the insulating portion 320 and the carrier layer to be fabricated in the same process step. For example, during the fabrication of the carrier layer, at least a portion of the material of the carrier layer falls onto the conductive portion 310 to form the insulating portion 320, thereby simplifying the display panel fabrication process.

[0034] Optionally, there are multiple communication openings 321 , and the same touch electrode 420 is electrically connected to the conductive part 310 via multiple communication openings 321 , which can increase the contact area between the touch electrode 420 and the conductive part 310 and better reduce the impedance of the touch electrode 420 .

[0035] The communication opening 321 can be positioned in a variety of locations. In some optional embodiments, referring to Figures 1 and 2 , the communication opening 321 is positioned adjacent to the area enclosed by the orthographic projection of the substrate 100 and the orthographic projection of the first subsection 322 on the substrate 100. In other words, the communication opening 321 can be positioned outside the first subsection 322. During the fabrication of the first subsection 322, for example, using a mask, the communication opening 321 can be retained without depositing material to form the first subsection 322. This eliminates the need for patterning the first subsection 322 to form the communication opening 321, simplifying the display panel fabrication process.

[0036] In some optional embodiments, the display panel includes a display area AA and a non-display area NA arranged around at least a portion of the display area AA, at least a portion of the touch electrode 420 and the conductive portion 310 extends from the display area AA to the non-display area NA, at least a portion of the first section 322 is located in the display area AA, and the connecting opening 321 is located in the non-display area NA.

[0037] In these optional embodiments, at least a portion of the first sub-portion 322 is located in the display area AA, which can alleviate the problem of a short circuit between the touch electrode 420 and the first electrode 410 in the display area AA. The communication opening 321 is located in the non-display area NA, so that the touch electrode 420 is electrically connected to the conductive portion 310 in the non-display area NA.

[0038] Please refer to FIG. 3 and FIG. 4 . FIG. 3 is a schematic plan view of a display panel provided in another embodiment of the present application; FIG. 4 is a cross-sectional view taken at BB in FIG. 3 .

[0039] In other optional embodiments, as shown in Figures 3 and 4, the first sub-portion 322 is disposed around the communication opening 321, and the orthographic projection of the communication opening 321 on the substrate 100 is located within the area enclosed by the edge of the orthographic projection of the first sub-portion 322 on the substrate 100. That is, the communication opening 321 is disposed through the first sub-portion 322, and the first sub-portion 322 encloses a closed communication opening 321.

[0040] In these optional embodiments, the communication opening 321 is formed by enclosing the first sub-portion 322 . The location of the communication opening 321 is more flexible, which facilitates the electrical connection between the touch electrode 420 and the conductive portion 310 .

[0041] Optionally, as described above, the display panel includes a display area AA and a non-display area NA, and the communication opening 321 can be located in the display area AA of the display panel. The communication opening 321 located in the display area AA allows the touch electrode 420 and the conductive portion 310 to be electrically connected to each other in the display area AA, shortening the connection distance between the touch electrode 420 and the conductive portion 310 and further reducing the impedance of the touch electrode 420.

[0042] Optionally, as shown in Figure 5, the insulating portion 320 also includes a second portion 323 connected to the first portion 322 and extending toward the substrate 100. The first portion 322 and the second portion 323 enclose a receiving groove with a connecting opening 321 facing the substrate 100, and the conductive portion 310 is located in the receiving groove.

[0043] In these optional embodiments, the insulating portion 320 includes a first division 322 and a second division 323, the second division 323 extends from the first division 322 toward the substrate 100, the second division 323 and the first division 322 enclose a receiving groove, and the conductive portion 310 is located in the receiving groove, so that the insulating portion 320 can provide protection to the conductive portion 310 in different directions, making it less likely for a short circuit to occur between the first electrode 410 and the conductive portion 310.

[0044] Optionally, the conductive part 310 includes a bottom surface facing the substrate 100, a top surface facing away from the substrate 100, and a side surface connecting the top surface and the bottom surface. The bottom surface of the conductive part 310 and the substrate 100 or the pixel defining part 210 are in contact and connected to each other, and the top surface and side surfaces of part of the conductive part 310 are in contact and connected to the insulating part 320, so that each surface of the conductive part 310 can be insulated from the outside.

[0045] In some optional embodiments, the isolation structure 300 includes a first surface facing the substrate 100 and a second surface facing away from the substrate 100 , and the orthographic projection of the first surface on the substrate 100 is located within the orthographic projection of the second surface on the substrate 100 .

[0046] In these optional embodiments, the size of the first surface of the isolation structure 300 facing the substrate 100 is less than or equal to the size of the second surface thereof facing away from the substrate 100, so that a step difference or a concave structure can be formed on the side of the isolation structure 300, and the first electrode 410 and the touch electrode 420 are easily disconnected from each other at the edge of the isolation structure 300 and thus insulated from each other.

[0047] Optionally, as shown in Figure 5, when the insulating part 320 wraps the conductive part 310, the first surface is formed by the second section 323 and the surface of the conductive part 310 facing the substrate 100, and the second surface can be set in the first section 322, so that the first electrode 410 and the touch electrode 420 are easily disconnected and insulated from each other at the edge position of the insulating part 320.

[0048] Optionally, as shown in FIG2 , when the conductive portion 310 and the first subsection 322 of the insulating portion 320 are stacked, the conductive portion 310 includes a first bottom surface facing the substrate 100 and a first top surface facing away from the substrate, with the orthographic projection of the first bottom surface on the substrate 100 being within the orthographic projection of the first top surface; and / or the first subsection 322 includes a second bottom surface facing the substrate 100 and a second top surface facing away from the substrate, with the orthographic projection of the second bottom surface on the substrate 100 being within the orthographic projection of the second top surface. This allows the first electrode 410 and the touch electrode 420 to be easily disconnected and insulated from each other at the edges of the conductive portion 310 and / or the first subsection 322.

[0049] In some optional embodiments, as shown in FIG6 , the conductive portion 310 and the touch electrode 420 are directly stacked and contacted with each other, which can increase the contact area between the conductive portion 310 and the touch electrode 420 and further reduce the impedance of the touch electrode 420 .

[0050] Optionally, the display panel also includes a carrier layer, which is located on the side of the pixel definition layer 200 facing away from the substrate 100. A through-hole is provided through the carrier layer, and the orthographic projection of the conductive part 310 on the substrate 100 is located within the orthographic projection of the through-hole on the substrate 100. The touch electrode 420 and the conductive part 310 are in contact and connected with each other within the through-hole.

[0051] In these optional embodiments, when the display panel includes a carrier layer, a through-hole can be set on the carrier layer so that the conductive part 310 is exposed from the through-hole, and the touch electrode 420 and the conductive part 310 are in contact and connected with each other in the through-hole, which can increase the contact area between the conductive part 310 and the touch electrode 420 and further reduce the impedance of the touch electrode 420.

[0052] Optionally, as shown in Figures 2 to 6, the cross-sectional area of ​​the conductive portion 310 decreases in the direction approaching the substrate 100, so that a concave can be formed at the side position of the conductive portion 310, making it easy for the first electrode 410 and the touch electrode 420 to be disconnected and insulated from each other at the edge position of the conductive portion 310.

[0053] Optionally, as shown in Figure 7, the conductive part 310 includes a first bottom surface facing the substrate 100, a first top surface facing away from the substrate 100, and a first side surface connecting the first top surface and the first bottom surface, and at least a portion of the first side surface is covered with an insulating layer 330, so that it is difficult for the first electrode 410 to contact the first side surface, thereby improving the short circuit connection between the first electrode 410 and the conductive part 310.

[0054] Optionally, as shown in Figure 8, the conductive part 310 includes a first sublayer 311 and a second sublayer 312 located on the side of the first sublayer 311 facing away from the substrate 100, and the orthographic projection of the first sublayer 311 on the substrate 100 is located within the orthographic projection of the second sublayer 312 on the substrate 100, that is, the size of the first sublayer 311 is less than or equal to the size of the second sublayer 312, so that a step difference or concave can be formed at the side position of the conductive part 310, so that the first electrode 410 and the touch electrode 420 can be easily disconnected and insulated from each other at the edge position of the conductive part 310.

[0055] Optionally, the conductive portion 310 further includes a third sublayer 313 located on the side of the first sublayer 311 facing the substrate 100. Optionally, the orthographic projection of the first sublayer 311 on the substrate 100 is located within the orthographic projection of the third sublayer 313 on the substrate 100. Providing the third sublayer 313 can provide protection for the pixel-defining portion 210 or the substrate 100 during the preparation of the first sublayer 311.

[0056] In some optional embodiments, as shown in Figure 9, the touch electrode 420 includes a first touch portion 421 and a second touch portion 422, the first touch portion 421 is extended and formed along the first direction X, and multiple first touch portions 421 are arranged at intervals along the second direction Y, the second touch portion 422 connects two adjacent first touch portions 421, and the first direction X and the second direction Y intersect; the first electrode 410 includes a first electrode portion 411 and a second electrode portion 412, the first electrode portion 411 is located between two adjacent first touch portions 421, multiple first electrode portions 411 are arranged at intervals along the second direction Y, and the second electrode portion 412 connects two adjacent first electrode portions 411.

[0057] In these optional embodiments, the touch electrode 420 includes a first touch portion 421 and a second touch portion 422. The second touch portion 422 is used to connect adjacent first touch portions 421, so that the touch electrode 420 has a comb-like shape. The first electrode portion 411 and the second electrode portion 412 are used to connect adjacent first electrode portions 411. The first electrode 410 is overall in a comb-like shape, with the first electrode portion 411 located between adjacent first touch portions 421. This allows the first electrode 410 and the touch electrode 420 to be interfitted with each other. This allows the touch electrode 420 and the first electrode 410 to be located at different positions in the display area AA, while also ensuring insulation between the touch electrode 420 and the first electrode 410.

[0058] Optionally, as shown in FIG9 and FIG10 , at least one row of pixel openings 220 is provided between two adjacent first touch portions 421 , with the first direction X being the row direction. This allows the first electrode 410 located between two adjacent first touch portions 421 to drive the light-emitting units 230 within the at least one row of pixel openings 220 to emit light.

[0059] Optionally, the isolation structure 300 and the touch electrode 420 are adapted in shape and size. For example, the isolation structure 300 is configured according to the shape of the touch electrode 420, and the isolation structure 300 is used to support the touch electrode 420. Optionally, the isolation structure 300 includes a first isolation portion for supporting the first touch portion 421 and a second isolation portion for supporting the second touch portion 422. The second isolation portion is used to connect adjacent first isolation portions, so that the isolation structure 300 does not isolate the first electrode 410 into independent first electrodes 410 corresponding to the pixel opening 220. The first electrode portion 411 and the second electrode portion 412 of the first electrode 410 can be interconnected to form a full-surface electrode.

[0060] The touch electrodes 420 can be arranged in various ways. The touch electrodes 420 can be self-capacitive touch electrodes 420 or mutual-capacitive touch electrodes 420. For example, as shown in FIG11 , the touch electrodes 420 are mutual-capacitive touch electrodes 420 , and the touch electrodes 420 include a first touch electrode 420 a and a second touch electrode 420 b . The first touch electrode 420 a and the second touch electrode 420 b each include a first touch portion 421 and a second touch portion 422 .

[0061] Optionally, when the touch electrode 420 is a mutual capacitance touch electrode 420 , in at least two adjacent first touch electrodes 420 a and second touch electrodes 420 b , the first touch portions 421 of the first touch electrode 420 a and the first touch portions 421 of the second touch electrode 420 b are alternately distributed along the second direction Y.

[0062] In these optional embodiments, by alternatingly distributing the first touch portion 421 of the first touch electrode 420a and the first touch portion 421 of the second touch electrode 420b along the second direction Y, the first touch electrode 420a and the second touch electrode 420b can be distributed at different positions of the display area AA, so that the first touch electrode 420a and the second touch electrode 420b can be distributed more evenly at different positions of the display area AA.

[0063] Optionally, a first electrode portion 411 is disposed between the first touch portion 421 of the adjacent first touch electrode 420a and the first touch portion 421 of the adjacent second touch electrode 420b. Optionally, at least a portion of the second electrode portion 412 is located on a side of the first touch portion 421 of the first touch electrode 420a facing away from the second touch portion 422, or at least a portion of the second electrode portion 412 is located on a side of the first touch portion 421 of the second touch electrode 420b facing away from the second touch portion 422, thereby connecting the first electrode portion 411 between the first touch portion 421 of the adjacent first touch electrode 420a and the first touch portion 421 of the adjacent second touch electrode 420b.

[0064] Optionally, as shown in Figure 11, the first electrode 410 is S-shaped, for example, multiple first electrode portions 411 are spaced apart along the second direction Y, and second electrode portions 412 adjacent along the second direction Y are arranged on both sides of the first electrode portion 411 in the first direction X and connect the adjacent first electrode portions 411.

[0065] Optionally, the first touch electrodes 420a and the second touch electrodes 420b are arrayed along the first direction X and the second direction Y. One or more first touch electrodes 420a may be arranged in the second direction Y, and the same first touch electrode 420a may be correspondingly provided with one or more second touch electrodes 420b, that is, the first touch portion 421 of the same first touch electrode 420a may be alternately distributed with the first touch portion 421 of one or more second touch electrodes 420b along the second direction Y.

[0066] In some optional embodiments, the touch electrode 420 is located in the display area AA of the display panel, the touch electrode 420 is a self-capacitive touch electrode 420, and the functional layer 400 also includes touch leads 430 connecting each touch electrode 420, and multiple touch leads 430 extend to at least two sides of the display area AA of the display panel.

[0067] In these optional embodiments, the functional layer 400 also includes touch leads 430 connecting each touch electrode 420, so that each touch electrode 420 can transmit a touch signal through each touch lead 430, and multiple touch leads 430 extend to at least two sides of the display area AA of the display panel, so that the multiple touch leads 430 are more evenly distributed on the display panel, which can improve the display effect of the display panel.

[0068] Alternatively, the isolation structure 300 can be disposed on the substrate 100 in a variety of ways. For example, as shown in Figures 2 to 6 , the isolation structure 300 can be disposed on the side of the pixel defining portion 210 facing away from the substrate 100. During the display panel manufacturing process, after the pixel definition layer 200 is formed, the isolation structure 300 can be further formed on the pixel defining portion 210. The method for manufacturing the isolation structure 300 is simple and convenient.

[0069] In other optional embodiments, as shown in FIG8 , the isolation structure 300 can be directly disposed on the surface of the substrate 100. For example, an isolation opening 240 is further disposed on the pixel definition layer 200. The isolation opening 240 is formed by enclosing the pixel defining portion 210, and at least a portion of the substrate 100 is exposed by the isolation opening 240. This allows the isolation structure 300 to be directly disposed on the substrate 100 exposed by the isolation opening 240. Optionally, the isolation structure 300 is spaced apart from the pixel defining portion 210 toward the inner wall surface of the isolation opening 240. This makes it difficult for the functional layer 400 to be continuous between the isolation structure 300 and the pixel defining portion 210, and it is difficult for the first electrode 410 and the touch electrode 420 to be short-circuited.

[0070] Optionally, the display panel also includes a second electrode layer 500, which is located on the side of the pixel definition layer 200 facing the substrate 100. The second electrode layer 500 includes a plurality of second electrodes 510 distributed at intervals, and the orthographic projection of each second electrode 510 on the substrate 100 and the orthographic projection of each pixel opening 220 on the substrate 100 at least partially overlap, and the second electrode 510 and at least part of the conductive portion 310 are made of the same material.

[0071] In these optional embodiments, the second electrode 510 and at least a portion of the conductive portion 310 are made of the same material, so that the second electrode 510 and the conductive portion 310 can be manufactured and formed in the same process step, which can further simplify the manufacturing process of the display panel.

[0072] Optionally, one of the first electrode 410 and the second electrode 510 serves as an anode and the other serves as a cathode to drive the light-emitting unit 230 to emit light. In the embodiment of the present application, the first electrode 410 is used as a cathode and the second electrode 510 is used as an anode for illustration.

[0073] In some other embodiments, as shown in FIG12 , the substrate 100 includes a metal layer and an insulating dielectric layer 120 positioned between the metal layer 110 and the pixel definition layer 200. The pixel definition portion 210 further encloses an isolation opening 240. The insulating dielectric layer 120 is provided with a clearance opening interconnected with the isolation opening 240. The isolation structure 300 is positioned within the clearance opening and the isolation opening 240. The metal layer 110 and at least a portion of the conductive portion 310 are made of the same material to simplify the display panel manufacturing process. The metal layer 110 can be at least one of the first signal line layer, the second signal line layer, and the third signal line layer described above, or the metal layer 110 can be a separately provided signal line layer. The insulating dielectric layer 120 can be a planarization layer, an inter-gate insulating dielectric layer, or the like.

[0074] The second aspect of the present application also provides a display device, including the display panel of any of the first aspect embodiments. Since the display device provided by the second aspect of the present application includes the display panel of any of the first aspect embodiments, the display device provided by the second aspect of the present application has the beneficial effects of the display panel of any of the first aspect embodiments, which will not be further elaborated here.

[0075] 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.

Claims

1. A display panel, comprising: substrate; A pixel definition layer, disposed on the substrate, the pixel definition layer comprising a pixel definition portion and a pixel opening formed by the pixel definition portion; An isolation structure, disposed on the substrate, the isolation structure comprising a conductive portion; The functional layer includes a first electrode and a touch electrode, at least a portion of the first electrode is located in the pixel opening, the touch electrode is located on the side of the conductive portion away from the substrate, the first electrode and the touch electrode are insulated from each other, the first electrode and the conductive portion are insulated from each other, and the touch electrode and the conductive portion are electrically connected to each other.

2. The display panel according to claim 1, wherein: The isolation structure also includes an insulating portion, which includes a connecting opening and a first section located on a side of the conductive portion away from the substrate, the first section is arranged around at least a portion of the connecting opening, and the touch electrodes are electrically connected to each other via the connecting opening and the conductive portion.

3. The display panel according to claim 2, wherein: The display panel further includes a carrier layer, which is located on a side of the pixel definition layer away from the substrate, and at least a portion of the insulating portion and the carrier layer are made of the same material.

4. The display panel according to claim 2, wherein: There are a plurality of the communication openings, and the same touch electrode is electrically connected to the conductive portion via the plurality of the communication openings.

5. The display panel according to claim 2, wherein: The communication opening is disposed adjacent to a region enclosed by an orthographic projection of the substrate and an orthographic projection of the first section on the substrate.

6. The display panel according to claim 5, wherein: The display panel includes a display area and a non-display area, the non-display area is located on at least one side of the display area, at least part of the touch electrodes and the conductive part extend from the display area to the non-display area, the first subsection is located in the display area, and the connecting opening is located in the non-display area.

7. The display panel according to claim 2, wherein: The first sub-portion is disposed around the communication opening, and the orthographic projection of the communication opening on the substrate is located within a region enclosed by an edge of the orthographic projection of the first sub-portion on the substrate.

8. The display panel according to claim 7, wherein: The communication opening is located in a display area of ​​the display panel.

9. The display panel according to claim 7, wherein: The insulating portion further includes a second portion connected to the first portion and extending toward the substrate. The first portion and the second portion are combined to form a receiving groove with a communication opening toward the substrate. The conductive portion is located in the receiving groove.

10. The display panel according to claim 7, wherein: The isolation structure includes a first surface facing the substrate and a second surface facing away from the substrate, the first surface is arranged on the side of the second section and the conductive section facing the substrate, the second surface is arranged on the side of the first section facing away from the substrate, and the orthographic projection of the first surface on the substrate is located within the orthographic projection of the second surface on the substrate.

11. The display panel according to claim 2, wherein: The first sub-portion and the conductive portion are stacked. The conductive portion comprises a first bottom surface facing the substrate and a first top surface facing away from the substrate, wherein an orthographic projection of the first bottom surface on the substrate is located within an orthographic projection of the first top surface on the substrate; And / or, the first section has a second bottom surface facing the substrate and a second top surface facing away from the substrate, and an orthographic projection of the second bottom surface on the substrate is located within an orthographic projection of the second top surface on the substrate.

12. The display panel according to claim 1, wherein: The conductive part and the touch electrode are stacked and contact-connected with each other.

13. The display panel according to claim 12, wherein: The display panel also includes a carrier layer, which is located on the side of the pixel definition layer away from the substrate. A through hole is provided through the carrier layer, and the orthographic projection of the conductive part on the substrate is located within the orthographic projection of the substrate, and the touch electrode and the conductive part are in contact and connected with each other within the through hole.

14. The display panel according to claim 12, wherein: The cross-sectional area of ​​the conductive portion decreases in the direction approaching the substrate, or the conductive portion includes a first sublayer and a second sublayer located on the side of the first sublayer facing away from the substrate, and the orthographic projection of the first sublayer on the substrate is located within the orthographic projection of the second sublayer on the substrate.

15. The display panel according to claim 12, wherein: The conductive portion includes a first bottom surface facing the substrate, a first top surface away from the substrate, and a first side surface connecting the first top surface and the first bottom surface, and at least a portion of the first side surface is covered with an insulating layer.

16. The display panel according to claim 1, wherein: The touch electrode comprises a first touch portion and a second touch portion, the first touch portion extends along a first direction, and a plurality of the first touch portions are arranged at intervals along a second direction, the second touch portion connects two adjacent first touch portions, and the first direction and the second direction intersect; The first electrode includes a first electrode portion and a second electrode portion. The first electrode portion is located between two adjacent first touch portions. A plurality of first electrode portions are arranged at intervals along the second direction. The second electrode portion connects two adjacent first electrode portions.

17. The display panel according to claim 1, wherein: The isolation structure is arranged on a side of the pixel defining portion away from the substrate; Alternatively, the substrate includes a metal layer and an insulating dielectric layer located between the metal layer and the pixel definition layer, the pixel defining portion also encloses an isolation opening, the insulating dielectric layer is provided with a clearance opening interconnected with the isolation opening, the isolation structure is located within the clearance opening and the isolation opening, and the metal layer and at least part of the conductive portion are made of the same material.

18. The display panel according to claim 1, wherein: The pixel defining portion further encloses an isolation opening, and the isolation structure is located in the isolation opening and is spaced apart from an inner wall surface of the pixel defining portion facing the isolation opening.

19. The display panel according to claim 18, wherein: The display panel also includes: a second electrode layer, the second electrode layer is located on the side of the pixel definition layer facing the substrate, the second electrode layer includes a plurality of second electrodes distributed at intervals, the orthographic projection of each second electrode on the substrate and the orthographic projection of each pixel opening on the substrate at least partially overlap, and the second electrode and at least part of the conductive portion are made of the same material.

20. A display device, wherein: A display panel comprising any one of claims 1-19.

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