Display panel and manufacturing method therefor

Abstract

Embodiments of the present application provide a display panel and a manufacturing method therefor. The display panel comprises: a substrate; an isolation structure, provided on the substrate, wherein the isolation structure comprises a plurality of isolation portions, at least some of the isolation portions are arranged at intervals and define a light-emitting area, and a light-emitting unit is provided in the light-emitting area; and a functional layer, comprising a first electrode and a touch electrode that are insulated from each other and spaced apart, wherein the first electrode is arranged in the light-emitting area and located on the side of the light-emitting unit facing away from the substrate, and the touch electrode is located on the side of the isolation portions facing away from the substrate.

Description

Display panel and manufacturing method thereof

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202311195908.8, filed on September 15, 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 method for manufacturing the same. Background Art

[0004] Organic Light-Emitting Diodes (OLEDs) are active light-emitting devices. Compared to traditional liquid crystal displays (LCDs), OLED display technology requires no backlight and is self-luminous. OLED display panels significantly save energy, can be made thinner and lighter, withstand a wider range of temperature fluctuations than LCDs, and offer wider viewing angles.

[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 method for manufacturing the same, 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 a plurality of isolation portions, at least some of the isolation portions being spaced apart and surrounding a light-emitting area, wherein a light-emitting unit is arranged within the light-emitting area; a functional layer, including a first electrode and a touch electrode, which are insulated from each other and spaced apart, the first electrode being arranged in the light-emitting area and located on a side of the light-emitting unit facing away from the substrate, and the touch electrode being located on a side of the isolation portion facing away from the substrate.

[0009] An embodiment of the second aspect of the present application provides a display panel, which includes: a substrate; a light-emitting unit arranged on the substrate; a functional layer located on the side of the light-emitting unit facing away from the substrate, the functional layer including a first electrode and a touch electrode that are insulated and spaced apart from each other, the touch electrode including a plurality of sub-electrodes arranged at intervals, and the plurality of sub-electrodes are connected to each other through a connecting portion.

[0010] An embodiment of the third aspect of the present application also provides a method for preparing a display panel, comprising: preparing an isolation structure on one side of the substrate, the isolation structure comprising a plurality of isolation portions, at least some of the isolation portions being spaced apart and enclosing a light-emitting area; preparing a light-emitting unit on a side of the isolation structure and the light-emitting area facing away from the substrate, the light-emitting unit being located in the light-emitting area; and preparing a functional layer on a side of the light-emitting unit and the isolation portion facing away from the substrate, the functional layer comprising a first electrode and a touch electrode that are insulated from each other and spaced apart, the first electrode being arranged in the light-emitting area and located on a side of the light-emitting unit facing away from the substrate, and the touch electrode being located on a side of the isolation portion facing away from the substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features.

[0012] FIG1 is a top view of a display panel provided in an embodiment of the present application;

[0013] FIG2 is a top view of a display panel provided in another embodiment of the present application;

[0014] FIG3 is a cross-sectional view of the AA portion of FIG2 ;

[0015] FIG4 is a schematic diagram of a partially enlarged structure of FIG2 in an example;

[0016] FIG5 is a schematic diagram of a partially enlarged structure of FIG2 in another example;

[0017] FIG6 is a schematic diagram of a partially enlarged structure of FIG2 in another example;

[0018] FIG7 is a schematic diagram of a partially enlarged structure of FIG2 in another example;

[0019] FIG8 is a schematic diagram of a partially enlarged structure of FIG2 in yet another example;

[0020] FIG9 is a schematic diagram of a partially enlarged structure of FIG2 in yet another example;

[0021] FIG10 is a schematic diagram of a partially enlarged structure of FIG2 in yet another example;

[0022] FIG11 is a top view of a display panel provided in another embodiment of the present application;

[0023] FIG12 is a top view of a display panel provided in yet another embodiment of the present application;

[0024] FIG13 is a partial cross-sectional view of a display panel provided in an embodiment of the present application;

[0025] FIG14 is a partial cross-sectional view of a display panel provided in another embodiment of the present application.

[0026] Description of reference numerals:

[0027] 100. Substrate;

[0028] 200, pixel definition layer; 210, pixel definition portion; 220, pixel opening; 230, light emitting unit;

[0029] 300, isolation structure; 301, isolation portion; 302, light-emitting region; 310, conductive portion; 311, first sublayer; 312, second sublayer; 313, third sublayer; 320, insulation portion;

[0030] 400, functional layer; 410, first electrode; 410a, first sub-unit; 410b, second sub-unit; 411, first electrode unit; 412, second electrode unit; 420, touch electrode; 420a, first touch electrode; 420b, second touch electrode; 4201, sub-electrode; 4202, connecting unit; 421, first touch unit; 422, second touch unit; 430, touch lead; 440, touch signal processing circuit;

[0031] 500, second electrode layer; 510, second electrode;

[0032] TA, touch area; AA, display area; L, first reference line; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0033] In order to better understand the present application, the display panel, the manufacturing method thereof, and the display device according to the embodiment of the present application are described in detail below with reference to FIG. 1 to FIG. 14 .

[0034] Please refer to Figures 1 to 3 together. Figure 1 is a top view of a display panel provided in an embodiment of the present application. Figure 2 is a top view of a display panel provided in another embodiment of the present application. Figure 3 is a cross-sectional view taken at AA in Figure 2.

[0035] As shown in Figures 1 to 3, the display panel provided in the embodiment of the present application includes a substrate 100, an isolation structure 300, and a functional layer 400. The isolation structure 300 is provided on the substrate 100 and includes isolation portions 301 and a light-emitting region 302 located between at least a portion of adjacent isolation portions 301. The light-emitting region 302 includes a light-emitting unit 230. The functional layer 400 includes a first electrode 410 and a touch electrode 420 that are insulated from each other. The first electrode 410 is provided in the light-emitting region 302 and is located on the side of the light-emitting unit 230 facing away from the substrate 100. The touch electrode 420 is located on the side of the isolation portion 301 facing away from the substrate 100.

[0036] 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 a light-emitting region 302 located between at least a portion of adjacent isolation portions 301. A light-emitting unit 230 is provided in the light-emitting region 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 located in the light-emitting region 302 and is provided on the light-emitting unit 230 to drive the light-emitting unit 230 to emit light. 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. The present application can divide the functional layer 400 into the first electrode 410 and the touch electrode 420, simplifying the structure of the display panel without the need to provide a separate touch structure layer, and ensuring the touch effect.

[0037] Optionally, the touch electrode 420 includes a plurality of sub-electrodes 4201 arranged at intervals, and the plurality of sub-electrodes 4201 are connected to each other via a connecting portion 4202 .

[0038] In these optional embodiments, the touch electrode 420 is divided into a plurality of sub-electrodes 4201, with gaps between adjacent sub-electrodes 4201 for disposing the first electrode 410. This allows for a more uniform distribution of the first electrodes 410, reduces the distribution area of ​​a single sub-electrode 4201, and thereby reduces the voltage drop across the sub-electrode 4201, thereby improving the touch effect.

[0039] At least some adjacent isolating portions 301 are spaced apart and enclose a light-emitting region 302. Alternatively, two adjacent isolating portions 301 may be spaced apart, with the light-emitting region 302 formed between the two adjacent isolating portions 301. Alternatively, the isolating portion 301 may be shaped differently, with two portions of the isolating portion 301 spaced apart, and the light-emitting region 302 formed between the two portions spaced apart within the isolating portion 301.

[0040] Optionally, the distribution pattern of the touch electrode 420 matches the distribution pattern of the isolation structure 300. The purpose of the isolation structure 300 is to support the touch electrode 420 so that the touch electrode 420 and the first electrode 410 are insulated from each other. Therefore, the isolation structure 300 is provided in the area where the touch electrode 420 is provided, and the isolation structure 300 is located on the side of the touch electrode 420 facing the substrate 100 to support the touch electrode 420.

[0041] Optionally, gaps are provided between at least some of the touch electrodes 420. Accordingly, gaps are provided between at least some of the isolation portions 301 supporting the touch electrodes 420. This gap constitutes the light-emitting region 302, and at least some of the first electrodes 410 are located within this gap (i.e., the light-emitting region 302) and are electrically connected to each other via the gap. Optionally, gaps are provided between at least some of the sub-electrodes 4201. Accordingly, gaps are provided between at least some of the isolation portions 301 supporting each sub-electrode 4201. At least some of the first electrodes 410 are located within this gap and are electrically connected to each other via the gap.

[0042] In the embodiment of the present application, by adding an isolation structure 300, not only can the functional layer 400 be divided into the first electrode 410 and the touch electrode 420, but by setting a gap between the isolation parts 301 (i.e., the light-emitting area 302), it can also 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 set in the same layer, which affects the interconnection of the first electrode 410 into a whole-surface electrode.

[0043] Optionally, as shown in Figures 1 and 2 , the display panel includes a display area AA, and the first electrodes 410 can be interconnected to form a full-surface electrode. The full-surface electrode does not mean that the electrodes are physically laid out across the entire surface, that is, they are 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 may further include a non-display area disposed around the display area AA.

[0044] In an embodiment of the present application, the touch electrode 420 is divided into multiple sub-electrodes 4201 , and gaps are provided between adjacent sub-electrodes 4201 . At least part of the first electrode 410 is located between adjacent sub-electrodes 4201 , thereby reducing the distribution area of ​​a single sub-electrode 4201 and lowering the voltage drop of the touch electrode 420 .

[0045] Optionally, the touch electrodes 420 and the isolation portions 301 are arranged in a one-to-one correspondence. Optionally, the shape of the isolation portion 301 is adapted to the shape of the touch electrode 420. For example, the isolation portion 301 includes a plurality of sub-isolating portions for supporting the sub-electrodes 4201 and a bridge isolation portion for supporting the connecting portion 4202, that is, the orthographic projection of the sub-electrode 4201 on the substrate 100 is located within the orthographic projection of the sub-isolating portion on the substrate 100, and the orthographic projection of the connecting portion 4202 on the substrate 100 is located within the orthographic projection of the bridge isolation portion on the substrate 100. The plurality of sub-isolating portions are interconnected by the bridge isolation portion, and the plurality of sub-isolating portions are spaced apart from each other so that the sub-electrodes 4201 located on the side of the sub-isolating portion facing away from the substrate 100 can be spaced apart from each other, and the bridge isolation portion is used to connect the plurality of sub-isolating portions so that the connecting portion 4202 located on the side of the bridge isolation portion facing away from the substrate 100 can connect the plurality of sub-electrodes 4201.

[0046] Optionally, the display panel 10 also includes a pixel definition layer 200, which is arranged on the substrate 100. The pixel definition layer 200 includes a pixel defining portion 210 and a pixel opening 220 formed by the pixel defining portion 210. The orthographic projection of each pixel opening 220 on the substrate 100 is located within the orthographic projection of each light-emitting area 302 on the substrate 100, that is, the pixel opening 220 is located within the light-emitting area 302, and the light-emitting unit 230 is located within the pixel opening 220.

[0047] Optionally, the display panel further includes a second electrode layer 500 , which includes a second electrode 510 . The second electrode 510 is located on a side of the light emitting unit 230 facing the substrate 100 and cooperates with the first electrode 410 to drive the light emitting unit 230 to emit light.

[0048] 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.

[0049] 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 light-emitting area 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.

[0050] In some optional embodiments, as shown in Figures 1 to 4, the first electrode 410 includes a first sub-portion 410a and a second sub-portion 410b, at least part of the first sub-portion 410a is located between two adjacent sub-electrodes 4201, and the second sub-portion 410b connects the two adjacent first sub-portions 410a.

[0051] Optionally, in FIG4 , to more simply and clearly illustrate the structure of the display panel, only one touch electrode 402 is illustrated in FIG4 , and the sub-electrode 4201 and the connecting portion 4202 of the touch electrode 402 are illustrated as a line structure. The sub-electrode 4201 and the connecting portion 4202 of the touch electrode 402 can be a metal trace structure with a certain width as shown in FIG2 .

[0052] In these optional embodiments, the first electrode 410 located at different positions is divided into a first sub-portion 410a and a second sub-portion 410b, at least part of the first sub-portion 410a is located between two adjacent sub-electrodes 4201, and is used to drive the light-emitting unit 230 between the two adjacent sub-electrodes 4201 to emit light, and the second sub-portion 410b connects the two adjacent first sub-portions 410a, so that multiple first sub-portions 410a are interconnected through the second sub-portion 410b to form a surface electrode.

[0053] There are many ways to distribute the multiple sub-electrodes 4201. The multiple sub-electrodes 4201 can be distributed in an array, or the multiple sub-electrodes 4201 can be distributed at intervals along a preset path.

[0054] In some optional embodiments, as shown in Figures 2 and 4, multiple sub-electrodes 4201 are spaced apart along a first direction X, the connecting portion 4202 is located on one side of the sub-electrode 4201 in a second direction Y, and the second sub-portion 410b of the first electrode 410 is located on a side of the sub-electrode 4201 facing away from the connecting portion 4202. The second direction Y intersects the first direction X; for example, the first direction X and the second direction Y are perpendicular. The second sub-portion 410b being located on the side of the sub-electrode 4201 facing away from the connecting portion 4202 means that the second sub-portion 410b is located on the side of the sub-electrode 4201 in the same touch electrode 420 facing away from the connecting portion 4202. Optionally, in a second sub-portion 410b and a first sub-portion 410a that are connected to each other, at least a portion of the first sub-portion 410a is located between two adjacent sub-electrodes 4201, and the second sub-portion 410b is located on the side of the sub-electrode 4201 facing away from the connecting portion 4202.

[0055] In these optional embodiments, multiple sub-electrodes 4201 are spaced apart along the first direction X, and the connecting portion 4202 is located on one side of the sub-electrode 4201 in the second direction Y to connect the multiple sub-electrodes 4201. At this time, the second sub-portion 410b is located on the side of the sub-electrode 4201 away from the connecting portion 4202 to improve the problem of easy short circuit connection between the second sub-portion 410b and the connecting portion 4202.

[0056] In other optional embodiments, as shown in FIG5 , the connecting portion 4202 is located in the middle of the sub-electrode 4201 in the second direction Y, and the second sub-portion 410b is located on at least one side of the sub-electrode 4201 in the second direction Y. That is, within the same touch electrode 420, the connecting portion 4202 is located in the middle of the sub-electrode 4201 in the second direction Y, and the second sub-portion 410b is located on at least one side of the sub-electrode 4201 in the second direction Y. Optionally, in the interconnected second sub-portion 410b and first sub-portion 410a, the first sub-portion 410a is located between two adjacent sub-electrodes 4201, and within the same touch electrode 420, the connecting portion 4202 is located in the middle of the sub-electrode 4201 in the second direction Y, and the second sub-portion 410b is located on at least one side of the sub-electrode 4201 in the second direction Y.

[0057] Alternatively, similar to FIG4 , FIG5 illustrates only one touch electrode 402 in order to more clearly and simply illustrate the structure of the display panel, and illustrates the sub-electrode 4201 and the connecting portion 4202 of the touch electrode 402 as a line structure. The sub-electrode 4201 and the connecting portion 4202 of the touch electrode 402 may be a metal trace structure having a certain width, as shown in FIG2 .

[0058] In these alternative embodiments, the connecting portion 4202 is located in the middle of the sub-electrode 4201 in the second direction Y. This allows signals from the connecting portion 4202 to be transmitted to portions of the sub-electrodes 4201 located on either side thereof, further reducing voltage drop. When the connecting portion 4202 is located in the middle of the sub-electrode 4201 in the second direction Y, the second sub-portion 410b can be located on either side of the sub-electrode 4201 in the second direction Y.

[0059] Optionally, as shown in Figure 5, two second sub-portions 410b are arranged on both sides of the sub-electrode 4201 in the second direction Y, and the two second sub-portions 410b are used to connect the first sub-portion 410a located therebetween to increase the distribution area of ​​the second sub-portion 410b and reduce the voltage drop of the first electrode 410.

[0060] Optionally, the orthographic projection areas of the sub-electrodes 4201 on the substrate 100 are equal, so that the transmission of the touch signal is more balanced.

[0061] There are many ways to set the shape of the touch electrode 420. In some optional embodiments, as shown in Figures 2 to 5, the sub-electrode 4201 includes a first touch portion 421 and a second touch portion 422. There are multiple first touch portions 421, and the multiple first touch portions 421 are arranged side by side along the second direction Y. The second touch portion 422 is connected between two adjacent first touch portions 421. The connecting portion 4202 is used to connect the first touch portion 421 and / or the second touch portion 422 of two adjacent sub-electrodes 4201.

[0062] In these optional embodiments, the sub-electrode 4201 is comb-shaped by being set as the first touch portion 421 and the second touch portion 422. On the one hand, it can increase the distribution area of ​​the sub-electrode 4201, and on the other hand, it enables the first electrode 410 to be connected to each other through the gaps between adjacent first touch portions 421 to form a full-surface electrode.

[0063] Alternatively, as shown in FIG4 , the connecting portion 4202 can be used to connect the first touch portions 421 of two adjacent sub-electrodes 4201. Alternatively, as shown in FIG5 , the connecting portion 4202 can connect the middle portions of the second touch portions 422 of two adjacent sub-electrodes 4201. Alternatively, the connecting portion 4202 in FIG5 can be considered to connect the first touch portions 421 of two adjacent sub-electrodes 4201. The connecting portion 4202, the first touch portion 421, and the second touch portion 422 are different regions of the touch electrode 420, divided in different ways and connected in different ways. As long as the connecting portion 4202 is connected to the middle portion of the second touch portion 422, as shown in FIG5 , it is sufficient.

[0064] The first touch portion 421 and the second touch portion 422 can be shaped in a variety of ways. The shapes of the first touch portion 421 and the second touch portion 422 can be configured to match the arrangement of the pixel openings 220. That is, the first touch portion 421 and the second touch portion 422 can be disposed in the gaps between the plurality of pixel openings 220. For example, as shown in Figures 4 and 5, when the plurality of pixel openings 220 are arranged in rows and columns along a first direction X and a second direction Y, with the first direction X being the row direction and the second direction Y being the column direction, and the pixel openings 220 in two adjacent rows are aligned along the second direction Y, and the pixel openings 220 in two adjacent columns are aligned along the first direction X, the first touch portion 421 can extend in a strip shape along the first direction X, and the second touch portion 422 can extend in a strip shape along the second direction Y.

[0065] In other optional embodiments, as shown in Figure 6, when two adjacent rows of pixel openings 220 are staggered and more than two rows of pixel openings 220 are arranged between the two first touch portions 421, in order to avoid positional interference between the second touch portion 422 and the pixel openings 220, the second touch portion 422 can be bent or tilted so that the second touch portion 422 can avoid the position of the pixel opening 220.

[0066] 4 and 5 , FIG6 illustrates only one touch electrode 402 to more clearly and simply illustrate the structure of the display panel. The sub-electrode 4201 and the connecting portion 4202 of the touch electrode 402 are illustrated as lines. The sub-electrode 4201 and the connecting portion 4202 of the touch electrode 402 may be a metal trace structure having a certain width, as shown in FIG2 .

[0067] Optionally, the isolation structure 300 and the touch electrode 420 have shapes that match, that is, the isolation structure 300 exists to support the touch electrode 420. Optionally, when the sub-electrode 4201 includes a first touch portion 421 and a second touch portion 422, the sub-isolating portion on the isolation structure 300 used to support the sub-electrode 4201 includes a first isolating portion and a second isolating portion, the orthographic projection of the first touch portion 421 on the substrate 100 is located within the orthographic projection of the first isolating 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 isolating portion on the substrate 100.

[0068] 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 first electrode 410. The positions of the first and second isolating portions are not shown in FIG4 ; 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.

[0069] Optionally, a light-emitting region 302 is formed between adjacent first isolating sections, so that the first electrode 410 is interconnected through the light-emitting regions 302 between adjacent first isolating sections to form a full-surface electrode. As described above, the light-emitting region 302 can be located between two adjacent isolating sections 301. And / or, a light-emitting region 302 can also be provided between two adjacent first isolating sections of a sub-isolating section on the same isolating section 301, that is, the light-emitting region 302 can be located between two different adjacent isolating sections 301, and / or the light-emitting region 302 can be located between two different sections within the same isolating section 301.

[0070] In some optional embodiments, the first sub-portion 410a of 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, the second electrode portion 412 connects the two adjacent first electrode portions 411, and the second electrode portion 412 is electrically connected to the second sub-portion 410b.

[0071] 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 sub-portion 410a of the first electrode 410 and the sub-electrode 4201 of 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.

[0072] 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.

[0073] Optionally, as shown in FIG7 , a plurality of 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. Optionally, FIG6 further simplifies the first electrode 410, illustrating only the sub-electrodes 4201 and the connecting portion 4202 of the touch electrode 420, and using dashed boxes to indicate the positions of the pixel openings.

[0074] Optionally, as shown in FIG8 , a row of pixel openings 220 is disposed between two adjacent first touch portions 421 .

[0075] There are various ways to configure the number of sub-electrodes 4201 in a touch electrode 420. For example, as shown in Figures 4 to 6 , a touch electrode 420 may include two sub-electrodes 4201. Alternatively, as shown in Figures 7 and 8 , a touch electrode 420 may include three sub-electrodes 4201. In other embodiments, a touch electrode 420 may include more sub-electrodes 4201.

[0076] For example, referring to FIG. 1 to FIG. 8 , the display panel includes a plurality of touch areas TA, and each touch electrode 420 is located in each touch area TA. That is, the same touch electrode 420 may be disposed in each touch area TA.

[0077] In other embodiments, as shown in FIG9 , which shows the distribution of the touch electrodes 420 in the same touch area TA, the touch area TA may further be provided with two touch electrodes 420 , and the first touch portions 421 of the sub-electrodes 4201 of the two touch electrodes 420 are alternately distributed along the second direction Y.

[0078] 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.

[0079] 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 420. For example, as shown in FIG9 , the touch electrodes 420 are mutual-capacitive touch electrodes 420. 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 sub-electrode 4201 and a connecting portion 4202. The sub-electrodes 4201 each include a first touch portion 421 and a second touch portion 422.

[0080] Optionally, as shown in FIG. 9 , when the touch electrodes 420 are mutual-capacitive touch electrodes 420 , the first touch portions 421 of the first touch electrodes 420 a and the first touch portions 421 of the second touch electrodes 420 b are alternately distributed along the second direction Y.

[0081] 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.

[0082] In other optional embodiments, as shown in Figure 10, the first touch electrode 420a and the second touch electrode 420b can also be arranged side by side with each other. The first touch electrode 420a and the second touch electrode 420b are arranged side by side with each other instead of being cross-arranged, which can improve the problem of easy short circuit connection between the first touch electrode 420a and the second touch electrode 420b.

[0083] 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.

[0084] In some optional embodiments, as shown in FIG2 , 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.

[0085] 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.

[0086] 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.

[0087] In some optional embodiments, as shown in Figures 2 to 11, the display panel further includes a touch lead 430, one end of which is connected to the touch electrode 420, and the other end of which is used to connect to the touch signal processing circuit 440. That is, each touch electrode 420 is individually connected to the touch signal processing circuit 440 via its connected touch lead 430, and the touch signal processing circuit 440 can send touch control signals to each touch electrode 420. The multiple touch electrodes 420 are arranged independently and insulated from each other. For example, the touch leads 430 and touch electrodes 420 are arranged in a one-to-one correspondence, so that each touch electrode 420 can be connected to the touch signal processing circuit 440 via a touch lead 430.

[0088] In some optional embodiments, as shown in Figures 2, 11, and 12, 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. The touch leads 430 are located on the side of the isolation portion 301 facing away from the substrate 100. The multiple touch leads 430 extend to at least two sides of the display area AA of the display panel. To better illustrate the overall structure of the touch electrode 420, Figures 11 and 12 only illustrate the structure of the touch electrode 420 with lines. The touch electrode 420 can be a metal trace of a certain width as shown in Figure 2. The first electrode 410 and the like can also be disposed in the gaps between the touch electrodes 420.

[0089] 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.

[0090] Optionally, FIG11 and FIG12 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 .

[0091] 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.

[0092] Optionally, as shown in FIG11 , 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.

[0093] Optionally, as shown in Figure 12, 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.

[0094] Optionally, as shown in Figures 11 and 12, 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 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.

[0095] Alternatively, the isolation structure 300 can be disposed on the substrate 100 in a variety of ways. For example, as shown in FIG3 , 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.

[0096] In some optional embodiments, as shown in Figure 3, 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.

[0097] 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 .

[0098] 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.

[0099] 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.

[0100] Optionally, as shown in Figures 3 and 13, 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.

[0101] Optionally, as shown in Figure 13, 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.

[0102] 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.

[0103] 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.

[0104] As described above, the material of the insulating portion 320 includes an organic material and / or an inorganic material. Optionally, as shown in FIG13 , 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.

[0105] Alternatively, the insulating portion 320 may be made of an inorganic material, making the insulating portion 320 thinner. Alternatively, the insulating portion 320 may be made of an organic material, making the insulating portion 320 thicker. Alternatively, the insulating portion 320 may be made of both an organic and an inorganic material, i.e., the insulating portion 320 includes two sublayers, thereby 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.

[0106] 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.

[0107] 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.

[0108] 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 a plurality of isolation parts, at least some of the isolation parts being arranged at intervals and surrounding a light-emitting area, wherein a light-emitting unit is disposed within the light-emitting area; The functional layer includes a first electrode and a touch electrode which are insulated from each other. The first electrode is arranged in the light-emitting area and located on a side of the light-emitting unit away from the substrate. The touch electrode is located on a side of the isolation portion away from the substrate.

2. The display panel according to claim 1, wherein: The touch electrode includes a plurality of sub-electrodes arranged at intervals, and the plurality of sub-electrodes are connected to each other through a connecting portion.

3. The display panel according to claim 2, wherein: The first electrode includes a first sub-portion and a second sub-portion. At least a portion of the first sub-portion is located between two adjacent sub-electrodes, and the second sub-portion connects two adjacent first sub-portions.

4. The display panel according to claim 3, wherein: The multiple sub-electrodes are spaced apart along the first direction, wherein the connecting portion is located on one side of the sub-electrode in the second direction, and the second sub-portion is located on the side of the sub-electrode away from the connecting portion, or the connecting portion is located in the middle of the sub-electrode in the second direction, the second direction intersects with the first direction, and the second sub-portion is located on at least one side of the sub-electrode in the second direction.

5. The display panel according to claim 3, wherein: The sub-electrode includes a first touch portion and a second touch portion, a plurality of the first touch portions are arranged side by side at intervals along a second direction, and the second touch portion is connected between two adjacent first touch portions; the connecting portion is used to connect the first touch portion and / or the second touch portion of two adjacent sub-electrodes.

6. The display panel according to claim 5, wherein: The same isolation portion includes a plurality of sub-isolation portions, the plurality of sub-isolation portions are interconnected through a bridge isolation portion, the orthographic projection of the sub-electrode on the substrate is located within the orthographic projection of the sub-isolation portion on the substrate, and the orthographic projection of the connection portion on the substrate is located within the orthographic projection of the bridge isolation portion on the substrate; The sub-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 second touch portion is located within the orthographic projection of the first isolation portion on the substrate. The orthographic projection of the control part on the substrate is located within the orthographic projection of the second isolation part on the substrate.

7. The display panel according to claim 6, wherein: The light emitting region is located between two adjacent sub-isolating portions, and / or the light emitting region is located between two adjacent first isolating portions that are connected to the same second isolating portion.

8. The display panel according to claim 5, wherein: The first sub-section includes a first electrode section and a second electrode section, the first electrode section is located between two adjacent first touch sections, a plurality of first electrode sections are spaced apart along the second direction, the second electrode section connects two adjacent first electrode sections, and the second electrode section and the second sub-section are electrically connected to each other.

9. The display panel according to claim 5, wherein: The plurality of touch electrodes include a first touch electrode and a second touch electrode, the first touch electrode and the second touch electrode are mutual capacitance touch electrodes, and the first touch electrode and the second touch electrode both include the first touch portion and the second touch portion; The first touch control portions of the first touch control electrodes and the first touch control portions of the second touch control electrodes are alternately distributed along the second direction.

10. The display panel according to claim 1, wherein: It also includes a touch lead, one end of which is connected to the touch electrode, and the other end of which is used to connect to a touch signal processing circuit. The touch electrode is located in the display area of ​​the display panel, and the touch electrode is a self-capacitive touch electrode. The touch lead is located on a side of the isolation portion away from the substrate, and a plurality of the touch leads extend to at least two sides of the display area of ​​the display panel.

11. The display panel according to claim 10, 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.

12. The display panel according to claim 11, 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.

13. The display panel according to claim 1, 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.

14. The display panel according to claim 13, wherein: The orthographic projection of the conductive portion on the substrate is located within the orthographic projection of the insulating portion on the substrate.

15. The display panel according to claim 13, 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.

16. A display panel, comprising: substrate; A light emitting unit is disposed on the substrate; The functional layer is located on the side of the light-emitting unit away from the substrate. The functional layer includes a first electrode and a touch electrode that are insulated and spaced apart from each other. The touch electrode includes a plurality of sub-electrodes that are spaced apart from each other. The plurality of sub-electrodes are connected to each other through a connecting portion.

17. The display panel according to claim 16, wherein: Also includes: The isolation structure is arranged on the substrate, and the isolation structure includes a plurality of isolation parts, at least some of which are arranged at intervals and enclose a light-emitting area, the light-emitting unit is located in the light-emitting area, and the touch electrode is located on a side of the isolation part away from the substrate.

18. The display panel according to claim 17, wherein: The same isolation part includes multiple sub-isolation parts, and the multiple sub-isolation parts are interconnected through a bridge isolation part. The orthographic projection of the sub-electrode on the substrate is located within the orthographic projection of the sub-isolation part on the substrate, and the orthographic projection of the connecting part on the substrate is located within the orthographic projection of the bridge isolation part on the substrate.

19. The display panel according to claim 16, wherein: The first electrode includes a first sub-portion and a second sub-portion, at least a portion of the first sub-portion is located between two adjacent sub-electrodes, and the second sub-portion connects two adjacent first sub-portions; The plurality of sub-electrodes are spaced apart along the first direction, wherein the connecting portion is located on one side of the sub-electrode in the second direction, and the second sub-portion is located on the side of the sub-electrode away from the connecting portion, or the connecting portion is located in the middle of the sub-electrode in the second direction, and the second The direction intersects with the first direction, and the second sub-portion is located on at least one side of the sub-electrode in the second direction.

20. A method for preparing a display panel, comprising: An isolation structure is prepared on one side of the substrate, wherein the isolation structure includes a plurality of isolation parts, and at least some of the isolation parts are arranged at intervals and surround a light-emitting area; A light-emitting unit is prepared on a side of the isolation structure and the light-emitting region away from the substrate, and the light-emitting unit is located in the light-emitting region; and A functional layer is prepared on the side of the light-emitting unit and the isolation portion facing away from the substrate, and the functional layer includes a first electrode and a touch electrode that are arranged with insulation intervals from each other, the first electrode is arranged in the light-emitting area and is located on the side of the light-emitting unit facing away from the substrate, and the touch electrode is located on the side of the isolation portion facing away from the substrate.

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