Display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device. The display panel comprises: a substrate; an isolation structure, arranged on the substrate, the isolation structure comprising an isolation part and an isolation opening defined by the isolation part, and a light-emitting unit being arranged in the isolation opening; and a functional layer, comprising a first electrode and a touch electrode, the first electrode being arranged in the isolation opening and located on the side of the light-emitting unit facing away from the substrate, the touch electrode being located on the side of the isolation part facing away from the substrate, and the first electrode and the touch electrode being insulated and spaced apart from each other. According to the present application, by providing the isolation structure, the functional layer can be divided into the first electrode and the touch electrode, and a touch structure layer does not need to be additionally arranged, thereby simplifying the structure of the display panel.

Description

Display panel and display device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202310796409.8, 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 fluctuations than LCD 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; an isolation structure, arranged on the substrate, the isolation structure including an isolation portion and an isolation opening formed by the isolation portion, and a light-emitting unit is arranged in the isolation opening; a functional layer, including a first electrode and a touch electrode, the first electrode is arranged in the isolation opening and is located on the side of the light-emitting unit facing away from the substrate, the touch electrode is located on the side of the isolation portion facing away from the substrate, and the first electrode and the touch electrode are insulated and spaced apart from 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, an isolation structure, and a functional layer. The isolation structure includes an isolation portion and an isolation opening. A light-emitting unit is provided in the isolation opening to realize a light-emitting display of the display panel. The functional layer includes a first electrode and a touch electrode. The first electrode is located in the isolation opening and is provided on the light-emitting unit to drive the light-emitting unit to emit light. The touch electrode is provided on the side of the isolation portion facing away from the substrate, 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. Therefore, by providing an isolation structure, the present application can divide the functional layer into a first electrode and a touch electrode, eliminating the need to provide a separate touch structure layer and simplifying the structure of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG1 is a top 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 schematic diagram of a partially enlarged structure of FIG1 in an example;

[0014] FIG4 is a schematic diagram of a partially enlarged structure of FIG1 in another example;

[0015] FIG5 is a schematic diagram of a partially enlarged structure of FIG1 in another example;

[0016] FIG6 is a schematic diagram of a partially enlarged structure of FIG1 in another example;

[0017] FIG7 is a schematic diagram of a partially enlarged structure of FIG1 in yet another example;

[0018] FIG8 is a schematic diagram of a partially enlarged structure of FIG1 in yet another example;

[0019] FIG9 is a top view of a display panel provided in another embodiment of the present application;

[0020] FIG10 is a top view of a display panel provided in another embodiment of the present application;

[0021] FIG11 is a partial cross-sectional view of a display panel provided in an embodiment of the present application;

[0022] FIG12 is a partial cross-sectional view of a display panel provided in another embodiment of the present application;

[0023] FIG13 is a partial cross-sectional view of a display panel provided in another embodiment of the present application;

[0024] FIG14 is a partial cross-sectional view of a display panel provided in yet another embodiment of the present application;

[0025] FIG15 is a partial cross-sectional view of a display panel provided in yet another embodiment of the present application;

[0026] FIG16 is a partial cross-sectional view of a display panel provided in yet another embodiment of the present application;

[0027] FIG17 is a partial cross-sectional view of a display panel provided in yet another embodiment of the present application. DETAILED DESCRIPTION

[0028] 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 FIG. 1 to FIG. 17 .

[0029] Please refer to Figures 1 and 2 together. Figure 1 is a top view of a display panel provided in an embodiment of the present application. Figure 2 is a cross-sectional view taken along line AA in Figure 1 .

[0030] As shown in Figures 1 and 2, an embodiment of the first aspect of the present application provides a display panel, comprising a substrate 100, an isolation structure 300, and a functional layer 400. The isolation structure 300 is disposed on the substrate 100 and includes an isolation portion 301 and an isolation opening 302 enclosed by the isolation structure 301. The light-emitting unit 230 is disposed within the isolation opening 302. The functional layer 400 includes a first electrode 410 and a touch electrode 420. The first electrode 410 is disposed within the isolation opening 302 and is located on a side of the light-emitting unit 230 facing away from the substrate 100. The touch electrode 420 is located on a side of the isolation portion 301 facing away from the substrate 100. The first electrode 410 and the touch electrode 420 are insulated and spaced apart from each other.

[0031] In the display panel provided in the embodiment of the present application, the display panel includes a substrate 100, an isolation structure 300 and a functional layer 400. The isolation structure 300 includes an isolation portion 301 and an isolation opening 302. A light-emitting unit 230 is provided in the isolation opening 302 to achieve light-emitting display of the display panel. The functional layer 400 includes a first electrode 410 and a touch electrode 420. The first electrode 410 is used to drive the light-emitting unit 230 to emit light in the isolation opening 302. The touch electrode 420 is provided on the side of the isolation portion 301 facing away from the substrate 100, so that the isolation structure 300 can isolate the touch electrode 420 and the first electrode 410 from each other, and the first electrode 410 and the touch electrode 420 are not easily short-circuited. Therefore, by providing the isolation structure 300, the present application can divide the functional layer 400 into the first electrode 410 and the touch electrode 420, and does not need to provide a separate touch structure layer, thereby simplifying the structure of the display panel.

[0032] Optionally, gaps are provided between at least some of the touch electrodes 420 . Correspondingly, gaps are provided between at least some of the isolation portions 301 for supporting the touch electrodes 420 . At least some of the first electrodes 410 are located in the gaps and are electrically connected to each other via the gaps.

[0033] In the embodiment of the present application, by adding the isolation structure 300, not only can the functional layer 400 be divided into the first electrode 410 and the touch electrode 420, but also by setting a gap between the isolation parts 301, it can be ensured that the first electrodes 410 can be interconnected to form a whole-surface electrode. On the basis of simplifying the display panel structure, it also solves the problem that the touch electrode 420 and the first electrode 410 are arranged in the same layer, which affects the interconnection of the first electrode 410 into a whole-surface electrode.

[0034] Optionally, the display panel includes a display area AA. The entire surface electrode here does not refer to an electrode physically laid out across the entire surface, i.e., the electrode is not laid out across the entire surface of the display area AA. Instead, the first electrodes 410 within the display area AA are interconnected, and the first electrodes 410 within the display area AA have the same potential. Optionally, the display panel also includes a non-display area NA disposed around the display area AA.

[0035] Optionally, the display panel 10 further includes a pixel definition layer 200 , which is disposed on the substrate 100 . The pixel definition layer 200 includes a pixel defining portion 210 and a pixel opening 220 enclosed by the pixel defining portion 210 . The pixel opening 220 is located within the isolation opening 302 , and the light-emitting unit 230 is located within the pixel opening 220 .

[0036] Optionally, the display panel further includes a second electrode layer 500 , which includes a second electrode 510 . The second electrode 510 is located on the side of the light emitting unit 230 facing the substrate and cooperates with the first electrode 410 to drive the light emitting unit 230 to emit light.

[0037] 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.

[0038] Optionally, during the preparation of the display panel, a functional material layer can be deposited on the isolation structure 300, and the part falling within the isolation opening 302 of the isolation structure 300 forms a first electrode 410, and the part falling on the isolation portion 301 of the isolation structure 300 forms 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.

[0039] Please refer to Figures 1 to 3 together, Figure 3 is a partial enlarged structural diagram of Figure 1. In order to more clearly illustrate the structure of the display panel, the location of the pixel opening 220 is indicated by a dotted line in Figure 3.

[0040] There are many ways to set the shape of the touch electrode 420. In some optional embodiments, as shown in Figures 1 to 3, the touch electrode 420 includes a first touch portion 421 and a second touch portion 422. The number of the first touch portions 421 is more than two, and the first touch portions 421 extend along the first direction X. The more than two first touch portions 421 are interconnected through the second touch portions 422.

[0041] In these optional embodiments, the touch electrode 420 is arranged as a first touch portion 421 and a second touch portion 422 to be comb-shaped. On the one hand, the distribution area of ​​the touch electrode 420 can be increased, and on the other hand, the first electrode 410 can be connected to each other through the gaps between adjacent first touch portions 421 to form a full-surface electrode.

[0042] Optionally, the second touch portion 422 extends along the second direction Y and connects to adjacent first touch portions 421 .

[0043] Optionally, the gap in the phrase "a gap is provided between at least some of the touch electrodes 420" may be: a gap between two first touch portions 421 within the same touch electrode 420, and / or a gap between two adjacent touch electrodes 420. The gap between two adjacent touch electrodes 420 may be: a gap between the second touch portions 422 of two adjacent touch electrodes 420, and / or a gap between the second touch portion 422 of one and the first touch portion 421 of the other of two adjacent touch electrodes 420; and / or a gap between two first touch portions 421 of two adjacent touch electrodes 420.

[0044] In some optional embodiments, as shown in FIG4 , at least two first touch portions 421 have different lengths, and the touch electrode 420 may further include a dummy electrode 423. The dummy electrode 423 is disposed on one side of the shorter first touch portion 421, and the dummy electrode 423 is insulated from the first touch portion 421, the second touch portion 422, and the first electrode 410. The addition of the dummy electrode 423 ensures a more even distribution of the touch electrodes 420 across the display panel, thereby improving the uniformity of the display panel.

[0045] Optionally, the virtual electrode 423 is arranged on one side of the shorter first touch portion 421 in the first direction X, so that the sum of the dimensions of the virtual electrode 423 and the shorter first touch portion 421 in the first direction is close to the length of the longer first touch portion 421, thereby better improving the problem of uneven display of the display panel.

[0046] Optionally, the isolation structure 300 and the touch electrode 420 have shapes that match each other, that is, for example, the isolation structure 300 exists to support the touch electrode 420. Optionally, the isolation portion 301 includes a first isolation portion and a second isolation portion, the orthographic projection of the first touch portion 421 on the substrate 100 is located within the orthographic projection of the first isolation portion on the substrate 100, and the orthographic projection of the second touch portion 422 on the substrate 100 is located within the orthographic projection of the second isolation portion on the substrate 100.

[0047] In these optional embodiments, the first isolating portion is provided corresponding to the first touch portion 421, and the second isolating portion is provided corresponding to the second touch portion 422. The first isolating portion can be provided to insulate the first touch portion 421 from the first electrode 410, and the second isolating portion can be provided to insulate the second touch portion 422 from the second electrode. The positions of the first and second isolating portions are not indicated in FIG3 ; the first isolating portion is provided in the same position as the first touch portion 421, and the second isolating portion is provided in the same position as the second touch portion 422.

[0048] Optionally, gaps are formed between adjacent first isolation portions, so that the first electrodes 410 are interconnected through the adjacent first isolation portions to form a full-surface electrode.

[0049] In some optional embodiments, 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 the two adjacent first electrode portions 411.

[0050] In these optional embodiments, the touch electrode 420 is roughly comb-shaped by setting the first touch portion 421 and the second touch portion 422, and the first electrode 410 is roughly comb-shaped by setting the first electrode portion 411 and the second electrode portion 412. The first electrode portion 411 is located between adjacent first touch portions 421, so that the first electrode 410 and the touch electrode 420 are plugged into each other. On the one hand, the touch electrode 420 and the first electrode 410 can be set at different positions in the display area AA, and on the other hand, it can also ensure that the touch electrode 420 and the first electrode 410 are insulated from each other.

[0051] Optionally, at least some of the second electrode portions 412 and the second touch electrode portions 422 are disposed on both sides of the same first touch electrode portion 421. For example, the second touch electrode portion 422 connected to a first touch electrode portion 421 and the second electrode portions 412 connected to first electrode portions 411 located on both sides of the first touch electrode portion 421 are disposed on both sides of the first touch electrode portion 421 in the first direction X, so that the second electrode portions 412 and the second touch electrode portions 422 do not affect each other.

[0052] For example, please continue to refer to Figures 1 to 3. The display panel includes multiple touch areas TA, and each touch electrode 420 is located in each touch area TA, that is, the same touch electrode 420 is arranged in each touch area TA, and in the same touch area TA, the second electrode portion 412 and the second touch portion 422 are respectively arranged on both sides of the first electrode portion 411 and the first touch portion 421 in the first direction X.

[0053] In these optional embodiments, the display panel includes multiple touch areas TA, and each touch area TA is provided with a touch electrode 420 to implement the touch function of the display panel. A first electrode portion 411 is provided between adjacent first touch portions 421 of the touch electrodes 420, that is, both the touch electrodes 420 and the first electrode 410 are provided within the touch area TA. Within the same touch area TA, the second electrode portion 412 and the second touch portion 422 are provided on either side of the first electrode portion 411 and the first touch portion 421 in the first direction X, so that the second touch portion 422 does not affect the connection between the second electrode portion 412 and the adjacent first electrode portion 411, ensuring that the first electrode portion 411 and the second electrode portion 412 are interconnected to form a full-surface electrode.

[0054] Optionally, at least one row of pixel openings 220 is provided between two adjacent first touch portions 421 , and the first direction X is the row direction, so that the first electrode 410 between two adjacent first touch portions 421 can drive the light-emitting units 230 in the at least one row of pixel openings 220 to emit light.

[0055] Optionally, as shown in FIG4 , one or more pixel openings 220 arranged along the second direction Y are provided between two adjacent first touch portions 421. That is, two or more rows of pixel openings 220 are provided between two adjacent first touch portions 421, so that the first electrodes 410 corresponding to the two adjacent rows of pixel openings 220 can be directly electrically connected to each other, thereby reducing the overall resistance of the first electrodes 410.

[0056] In other embodiments, as shown in FIG5 , when two touch electrodes 420 are provided in the touch area TA, and the first touch portions 421 of the two touch electrodes 420 are alternately distributed along the second direction Y, and the second touch portions 422 of the two touch electrodes 420 are respectively provided on both sides of the first touch portions 421 thereof in the first direction X, the first electrode portion 411 may be S-shaped so that the first electrodes 410 can be electrically connected to each other through the gap between the two touch electrodes 420 that are inserted into each other.

[0057] Optionally, gaps are provided between adjacent touch electrodes 420 , so that the first electrode portions 411 and / or the second electrode portions 412 located in different touch areas TA can be electrically connected to each other through the gaps to form full-surface electrodes.

[0058] The touch electrodes 420 can be arranged in various ways. The touch electrodes 420 can be self-capacitive touch electrodes or mutual-capacitive touch electrodes. For example, the touch electrodes 420 are mutual-capacitive touch electrodes, and the touch electrodes 420 include a first touch electrode 420a and a second touch electrode 420b. The first touch electrode 420a and the second touch electrode 420b each include a first touch portion 421 and a second touch portion 422.

[0059] 6 and 7 , 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.

[0060] 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.

[0061] Optionally, a first electrode portion 411 is disposed between the first touch portion 421 of adjacent first touch electrodes 420a and the touch portion of adjacent second touch electrodes 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 electrodes 420a and the touch portion of the second touch electrode 420b.

[0062] Optionally, as shown in Figure 5, 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.

[0063] 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 can be arranged in the second direction Y, and the same first touch electrode 420a can 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 can be alternately distributed with the first touch portion 421 of one or more second touch electrodes 420b along the second direction Y.

[0064] In other optional embodiments, as shown in FIG8 , a plurality of second touch electrodes 420 b arranged side by side along a second direction Y are disposed between two adjacent first touch electrodes 420 a along the first direction X. In these optional embodiments, the first touch electrodes 420 a and the second touch electrodes 420 b are disposed side by side rather than intersecting, thereby alleviating the problem of easy short circuits between the first touch electrodes 420 a and the second touch electrodes 420 b.

[0065] In the above embodiment, the extension direction of the first touch portion 421 of the first touch electrode 420a and the extension direction of the second touch portion 422 of the second touch electrode 420b may optionally be the same or different. The first direction X is the extension direction of the first touch portion 421 within the same touch electrode 420, and the second direction Y is the direction in which multiple first touch portions 421 within the same touch electrode 420 are arranged side by side. The first direction X and the second direction Y of different touch electrodes 420 may be in the same direction or in different directions.

[0066] In some optional embodiments, as shown in FIG1 , the display panel includes a touch area TA, wherein the touch areas TA are arranged in an array along a first direction X and a second direction Y, and the distance between two adjacent touch areas TA in the first direction X and / or the second direction Y is the same. This makes the distribution of the touch areas TA more uniform, thereby achieving a more uniform display effect of the display panel.

[0067] Optionally, one or more touch electrodes 420 may be provided within the same touch area TA. For example, one first touch electrode 420a or one second touch electrode 420b may be provided within the same touch area TA. Alternatively, a group of first touch electrodes 420a and second touch electrodes 420b may be provided within the same touch area TA, with the first touch portions 421 of the first touch electrodes 420a and the first touch portions 421 of the second touch electrodes 420b being alternately distributed along the second direction Y. That is, the first touch electrodes 420a and the second touch electrodes 420b are provided within the same touch area TA and are interlocked.

[0068] Optionally, the number of the touch electrodes 420 disposed in each of the touch areas TA is the same, so that the touch electrodes 420 in the multiple touch areas TA are more evenly distributed, thereby making the display effect of the display panel more uniform.

[0069] In some optional embodiments, as shown in Figures 1, 9 and 10, 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. The touch leads 430 are located on the side of the isolation portion 301 away from the substrate 100, and multiple touch leads 430 extend to at least two sides of the display area AA of the display panel.

[0070] 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.

[0071] Optionally, FIG9 and FIG10 only illustrate the positions of the touch electrodes 420 and the touch leads 430 in the functional layer 400 , and the first electrodes 410 may be provided at positions other than the touch electrodes 420 and the touch leads 430 .

[0072] Optionally, the multiple touch electrodes 420 are distributed in an array along the first direction X and the second direction Y. The display area AA of the display panel and the multiple touch electrodes 420 are symmetrically arranged about a first reference line L along the second direction Y. The touch leads 430 connected to the touch electrodes 420 on both sides of the first reference line L are extended in a direction away from the first reference line L. This makes the distribution of the touch electrodes 420 and the touch leads 430 more uniform and reduces the extension distance of the touch leads 430, thereby improving the display effect while ensuring the transmission of touch signals.

[0073] Optionally, as shown in FIG9 , when an even number of touch electrodes 420 are arranged in the same row, the first direction X is the row direction, and the even number of touch electrodes 420 are arranged on both sides of the first reference line L.

[0074] Optionally, as shown in Figure 10, when an odd number of touch electrodes 420 are arranged in the same row, at least one column of touch electrodes 420 itself is symmetrically arranged about the first reference line L, that is, the first reference line L is overlapped with the multiple touch electrodes 420 arranged along the second direction Y, then the touch leads 430 connected to the touch electrodes 420 overlapping with the first reference line L extend to both sides of the display area AA in the second direction Y, so that the wiring of the touch leads 430 is more uniform, which can further improve the display effect of the display panel.

[0075] Optionally, as shown in Figures 9 and 10, when multiple touch leads 430 extend from the same side of the display panel, at least some of the multiple touch leads 430 may be arranged side by side. As shown in Figure 9, two touch leads 430 are arranged side by side outside the multiple touch electrodes 420. Optionally, at least some of the first electrodes 410 are located between two adjacent touch leads 430 that are at least partially arranged side by side. In other words, first electrodes 410 can be arranged between adjacent touch leads 430 to increase the distribution area of ​​the first electrodes 410, allowing the first electrodes 410 to be interconnected to form a full-surface electrode.

[0076] Alternatively, the isolation structure 300 can be disposed on the substrate 100 in a variety of ways. For example, as shown in FIG2 , 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 fabricated on the pixel defining portion 210. The method for fabricating the isolation structure 300 is simple and convenient.

[0077] In other optional embodiments, as shown in FIG11 , the isolation structure 300 can be directly disposed on the surface of the substrate 100. For example, a hollow opening 240 is further provided on the pixel definition layer 200. The hollow opening 240 is formed by enclosing the pixel defining portion 210, and at least a portion of the substrate 100 is exposed by the hollow opening 240. This allows the isolation structure 300 to be directly disposed on the substrate 100 exposed by the hollow opening 240. Optionally, the isolation structure 300 is spaced apart from the inner wall surface of the pixel defining portion 210 facing the hollow 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.

[0078] In some other embodiments, as shown in FIG12 , the substrate 100 includes a metal layer 110 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 hollow 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.

[0079] In yet other embodiments, as shown in FIG13 , the isolation portion 301 is formed by a recessed portion of the pixel defining portion 210 facing away from the substrate 100. Specifically, the isolation portion 301 is a partitioning trench, which creates a step between the upper surface of the pixel defining portion 210 facing away from the substrate 100 and the bottom surface of the partitioning trench. This allows the first electrode 410 and the touch electrode 420 to be disconnected from each other at the edge of the partitioning trench during fabrication of the functional layer 400. Optionally, the cross-sectional dimensions of the isolation portion 301 gradually increase as it approaches the substrate 100; as the cross-sectional dimensions of the partitioning trench gradually increase as it approaches the substrate 100, the inner wall of the partitioning trench can be concave, making it easier for the first electrode 410 and the touch electrode 420 to be disconnected at the edge of the partitioning trench.

[0080] Optionally, the partitioning groove (ie, the isolation portion 301 ) is provided through the pixel definition layer 200 to increase the depth of the partitioning groove, so that the first electrode 410 and the touch electrode 420 are more easily disconnected at the edge of the partitioning groove.

[0081] Optionally, the isolation trench (i.e., the isolation portion 301) may extend from the pixel definition layer 200 into the interior of the substrate 100. For example, the substrate 100 may further include a planarization layer, and the isolation trench may extend through the pixel definition portion 210 and at least a portion of the planarization layer to further increase the depth of the isolation trench, thereby making it easier for the first electrode 410 and the touch electrode 420 to be disconnected at the edge of the isolation trench.

[0082] In some optional embodiments, the isolation structure 300 includes a conductive portion 310 and an insulating portion 320 located on the side of the conductive portion 310 facing away from the substrate 100, the touch electrode 420 is located on the side of the insulating portion 320 facing away from the substrate 100, and the first electrode 410 and the conductive portion 310 are electrically connected to each other.

[0083] In these optional embodiments, the first electrodes 410 and the conductive portion 310 are electrically connected to each other, so that the first electrodes 410 can be interconnected to form a surface electrode through the conductive portion 310 , which can reduce the impedance of the first electrodes 410 .

[0084] 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.

[0085] Optionally, the orthographic projection of the conductive part 310 on the substrate 100 is located within the orthographic projection of the insulating part 320 on the substrate 100, that is, the size of the conductive part 310 is less than or equal to the size of the insulating part 320, so that a step difference can be formed between the conductive part 310 and the insulating part 320, or one side of the conductive part 310 can form an inward concave, and the functional layer 400 can be broken at the edge of the isolation structure 300 to form a first electrode 410 and a touch electrode 420.

[0086] Optionally, as shown in Figures 2 and 11, the conductive portion 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. The first sublayer 311 and the first electrode 410 are electrically connected to each other. 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, and the orthographic projection of the second sublayer 312 on the substrate 100 is located within the orthographic projection of the insulating portion 320 on the substrate 100. In other words, the size of the first sublayer 311 is smaller than or equal to that of the second sublayer 312, making it easier for the functional layer 400 to break at the edge of the isolation structure 300 to form the first electrode 410 and the touch electrode 420.

[0087] Optionally, as shown in Figure 11, the conductive part 310 also includes a third sublayer 313 located on the side of the first sublayer 311 facing the substrate 100, and 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, that is, the size of the first sublayer 311 is less than or equal to the size of the third sublayer 313, so that the first electrode 410 can more easily climb to the first sublayer 311 through the third sublayer 313 and be electrically connected to the first sublayer 311.

[0088] Optionally, the second sub-layer 312 and the third sub-layer 313 are made of the same material, which can simplify the manufacturing process of the display panel.

[0089] Alternatively, as shown in FIG14 , the conductive portion 310 is a single-layer structure, and the cross-sectional area of ​​the conductive portion 310 gradually decreases as the conductive portion 310 approaches the substrate 100, thereby forming a concave portion on one side of the conductive portion 310 and disconnecting the first electrode 410 and the touch electrode 420 at the edge of the conductive portion 310. For example, the cross-sectional area of ​​the isolation portion 301 gradually decreases as the isolation portion 301 approaches the substrate 100, and the isolation portion 301 is formed of a negative-tone resist.

[0090] As described above, the material of the insulating portion 320 includes an organic material and / or an inorganic material. Optionally, as shown in FIG11 , the light-emitting unit 230 includes a carrier layer. The material of the insulating portion 320 and the carrier layer can be the same, so that the insulating portion 320 and the carrier layer can be manufactured and formed in the same process step. The carrier layer can 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.

[0091] Alternatively, as shown in FIG15 , the insulating portion 320 may be made of an inorganic material, making the insulating portion 320 thinner. Alternatively, as shown in FIG16 , the insulating portion 320 may be made of an organic material, making the insulating portion 320 thicker. Alternatively, as shown in FIG17 , the insulating portion 320 may be made of both an organic and an inorganic material, i.e., the insulating portion 320 includes two sub-layers, further increasing the thickness of the insulating portion 320 and enabling the first electrode 410 and the touch electrode 420 to be disconnected at the edge of the isolation structure 300.

[0092] 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.

[0093] 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.

[0094] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A display panel, comprising: substrate; An isolation structure, disposed on the substrate, the isolation structure comprising an isolation portion and an isolation opening formed by the isolation portion, wherein a light-emitting unit is disposed in the isolation opening; The functional layer includes a first electrode and a touch electrode, wherein the first electrode is arranged in the isolation opening and is located on a side of the light-emitting unit away from the substrate, and the touch electrode is located on a side of the isolation portion away from the substrate, and the first electrode and the touch electrode are arranged in an insulated manner.

2. The display panel according to claim 1, wherein: The touch electrode includes a second touch portion and two or more first touch portions, the first touch portions extend along a first direction, and the two or more first touch portions are connected through the second touch portion.

3. The display panel according to claim 2, wherein: The isolation portion includes a first isolation portion and a second isolation portion, the orthographic projection of the first touch portion on the substrate is located within the orthographic projection of the first isolation portion on the substrate, and the orthographic projection of the second touch portion on the substrate is located within the orthographic projection of the second isolation portion on the substrate.

4. The display panel according to claim 3, wherein: At least two of the first touch portions have different extension lengths in the first direction. The touch electrode further includes a virtual electrode disposed on one side of the shorter first touch portion. The virtual electrode is insulated from the first touch portion, the second touch portion and the first electrode.

5. The display panel according to any one of claims 2 to 4, wherein: 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.

6. The display panel according to claim 5, wherein: At least part of the second electrode portion and the second touch electrode portion are arranged in the first direction on both sides of the same first touch electrode portion in the first direction.

7. The display panel according to any one of claims 2 to 6, wherein: One or more pixel openings arranged along a second direction are disposed between two adjacent first touch control portions, and the second direction intersects with the first direction.

8. The display panel according to any one of claims 2 to 7, wherein: The touch electrode is a mutual capacitance touch electrode, and the touch electrode includes a first touch electrode and a second touch electrode, and the first touch electrode and the second touch electrode both include the first touch portion and the second touch portion.

9. The display panel according to claim 8, wherein: In at least two adjacent first touch electrodes and second touch electrodes, the first touch portions of the first touch electrodes and the first touch portions of the second touch electrodes are alternately distributed along the second direction; Alternatively, a plurality of second touch electrodes arranged side by side along the second direction are arranged between two adjacent first touch electrodes along the first direction.

10. The display panel according to any one of claims 1 to 9, wherein: The display panel includes a plurality of touch control areas, each of which is provided with the touch control electrode, and the plurality of touch control areas are distributed in an array along a first direction and a second direction, and a distance between two adjacent touch control areas in the first direction and / or the second direction is the same.

11. The display panel according to any one of claims 1 to 10, wherein: The touch electrode is located in the display area of ​​the display panel, and the touch electrode is a self-capacitive touch electrode. The functional layer also includes the touch lead connecting each of the touch electrodes, and the touch lead is located on the side of the isolation portion away from the substrate. A plurality of the touch leads extend to at least two sides of the display area of ​​the display panel.

12. The display panel according to claim 11, wherein: The plurality of touch electrodes are distributed in an array along a first direction and a second direction, the display area of ​​the display panel and the plurality of touch electrodes are symmetrically arranged about a first reference line along the second direction, and the touch leads connecting the touch electrodes located on both sides of the first reference line are extended in a direction away from the first reference line.

13. The display panel according to claim 12, wherein: The first reference line is overlapped with the plurality of touch electrodes arranged along the second direction, and the touch leads connected to the touch electrodes overlapped with the first reference line extend to both sides of the display area in the second direction; Alternatively, at least a portion of the first electrode is located between at least partially adjacent two touch control leads.

14. The display panel according to any one of claims 1 to 13, wherein: Also includes: A pixel definition layer, wherein the pixel definition layer comprises a pixel definition portion and a pixel opening formed by the pixel definition portion, the isolation portion is arranged around the pixel opening, and the light emitting unit is located in the pixel opening; The isolation structure is arranged on a side of the pixel defining portion away from the substrate; Alternatively, the pixel defining portion further encloses a clearance opening, and the isolation structure is located in the clearance opening and is spaced apart from the inner wall surface of the pixel defining portion facing the clearance opening; Alternatively, the substrate includes a metal layer and an insulating dielectric layer located between the metal layer and the pixel definition layer, the pixel definition portion further encloses a clearance opening, the insulating dielectric layer is provided with a communication port, the communication port is connected to the clearance opening, the isolation structure is arranged in the clearance opening and the communication port, and the metal layer and at least part of the isolation portion are arranged with the same material; Alternatively, the isolation portion is formed by a surface depression of the pixel defining portion away from the substrate.

15. The display panel according to any one of claims 1 to 14, wherein: The isolation structure includes a conductive part and an insulating part located on a side of the conductive part away from the substrate. The touch electrode is located on a side of the insulating part away from the substrate. The first electrode and the conductive part are electrically connected to each other.

16. The display panel according to claim 15, wherein: The insulating portion includes an inorganic insulating layer and / or an organic insulating layer.

17. The display panel according to any one of claims 15 to 16, wherein: The orthographic projection of the conductive portion on the substrate is located within the orthographic projection of the insulating portion on the substrate.

18. The display panel according to any one of claims 15 to 17, wherein: The conductive part includes a first sublayer and a second sublayer located on the side of the first sublayer facing away from the substrate, the first sublayer and the first electrode are electrically connected to each other, the orthographic projection of the first sublayer on the substrate is located within the orthographic projection of the second sublayer on the substrate, and the orthographic projection of the second sublayer on the substrate is located within the orthographic projection of the insulating part on the substrate.

19. The display panel according to claim 18, wherein: The conductive portion further includes a third sublayer located on a side of the first sublayer facing the substrate, and an orthographic projection of the first sublayer on the substrate is located within an orthographic projection of the third sublayer on the substrate.

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

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