Display panel, display device and preparation method of display panel

Abstract

The invention discloses a display panel, a display device and a preparation method of the display panel. The display panel comprises a substrate, an isolation structure, a light-emitting layer and a functional electrode layer. The isolation structure comprises the isolation parts which are mutually spaced and the isolation openings formed by the isolation parts in an enclosing mode, when the light-emitting layer and the functional electrode layer are prepared, the light-emitting layer and the functional electrode layer are separated by the isolation parts to form the light-emitting units and the first electrodes located in the isolation openings, and development and use of the precise mask plate can be reduced. The first electrodes of the functional electrode layer are electrically connected with the isolation parts, so that the first electrodes located in the isolation openings defined by the same isolation part are connected into a whole through the isolation parts, and the first electrodes serve as light-emitting electrodes of the light-emitting units and serve as touch electrodes together with the isolation parts connected with the first electrodes. In addition, the touch electrodes are arranged at intervals, so that independent partition control among the touch electrodes is achieved, and the use performance of the display panel is improved.

Description

Technical Field

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

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

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

[0004] The embodiments of the present application provide a display panel, a display device and a method for manufacturing a display panel, aiming to improve the performance of the display panel.

[0005] A first aspect of the present application provides a display panel, comprising: a substrate; an isolation structure located on the substrate, the isolation structure comprising a plurality of isolation portions spaced apart from each other, each isolation portion enclosing a plurality of isolation openings; a light-emitting layer located on the substrate, the light-emitting layer comprising light-emitting units located at the isolation openings; a functional electrode layer located on a side of the light-emitting layer away from the substrate, the functional electrode layer comprising a first electrode located at each isolation opening and electrically connected to the isolation portion, so that the first electrode and the isolation portion connected thereto can be reused as a touch electrode.

[0006] According to an implementation of the first aspect of the present application, the display panel further includes: a touch connection line, one end of the touch connection line is connected to the isolation portion of the touch electrode, and the other end is used to connect to the touch signal processing circuit.

[0007] According to any of the aforementioned implementations of the first aspect of the present application, the projection areas of the touch electrodes on the substrate are the same.

[0008] According to any of the aforementioned embodiments of the first aspect of the present application, a first opening is formed between adjacent isolation portions, and at least a portion of the touch connection line is located in the first opening.

[0009] According to any of the aforementioned implementations of the first aspect of the present application, the display panel further includes: an encapsulation layer located on a side of the isolation structure facing away from the substrate, and at least a portion of the encapsulation layer is located in the first opening.

[0010] According to any of the aforementioned implementations of the first aspect of the present application, the substrate includes: a signal line layer, and the touch connection line is located in the signal line layer.

[0011] According to any of the aforementioned implementations of the first aspect of the present application, the touch connection line is connected to the isolation portion via hole.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel also includes: a connecting segment, which is arranged between the signal line layer and the isolation structure, one end of the connecting segment is connected to the touch connection line, and the other end is connected to the first conductive layer of the isolation part.

[0013] According to any of the aforementioned implementations of the first aspect of the present application, a plurality of touch electrodes are distributed in an array, adjacent touch electrodes are spaced apart to form a first opening, and the touch electrodes are self-capacitive touch electrodes.

[0014] According to any of the aforementioned embodiments of the first aspect of the present application, the touch electrode includes a first touch electrode block and a second touch electrode block, the first touch electrode block and the second touch electrode block are mutual capacitive touch electrodes, the first touch electrode block and the second touch electrode block both include a first touch portion and a second touch portion, more than two first touch portions are arranged side by side along a first direction, and the second touch portion connects adjacent first touch portions.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, in at least two adjacent first touch electrode blocks and second touch electrode blocks, the first touch portions of the first touch electrode blocks and the first touch portions of the second touch electrode blocks are alternately distributed along the first direction.

[0016] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation portion includes a first conductive layer and a second layer located on a side of the first conductive layer away from the substrate, and the orthographic projection of the first conductive layer on the substrate is located within the orthographic projection of the second layer on the substrate.

[0017] According to any of the aforementioned embodiments of the first aspect of the present application, the second layer includes a conductive material or an insulating material.

[0018] According to any of the aforementioned embodiments of the first aspect of the present application, the second layer includes a metal material, and the first conductive layer and the second layer are made of different materials.

[0019] According to any of the aforementioned embodiments of the first aspect of the present application, the isolation portion further includes a third layer located on the side of the first conductive layer facing the substrate, and the orthographic projection of the first conductive layer on the substrate is located within the orthographic projection of the third layer on the substrate.

[0020] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel further includes: a pixel definition layer located on the substrate, the pixel definition layer including a pixel defining portion and a pixel opening formed by the pixel defining portion, and the light-emitting unit is located at the pixel opening.

[0021] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the isolation opening on the substrate.

[0022] According to any of the aforementioned implementations of the first aspect of the present application, the isolation portion is located on a side of the pixel defining portion facing away from the substrate.

[0023] According to any of the aforementioned implementations of the first aspect of the present application, a clearance opening is opened on the pixel defining portion, and the isolation portion is located in the clearance opening.

[0024] According to any of the aforementioned implementations of the first aspect of the present application, the display panel further includes a pixel electrode, and the pixel electrode is exposed by the pixel opening.

[0025] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel includes an encapsulation layer, at least part of the encapsulation layer is located in the isolation opening and covers the light-emitting unit in the projection of the substrate, and part of the encapsulation layer is located on the side of the light-emitting unit away from the substrate.

[0026] An embodiment of a second aspect of the present application provides a display device, which includes a display panel according to any of the above embodiments.

[0027] An embodiment of a third aspect of the present application provides a method for preparing a display panel, including:

[0028] An isolation structure is prepared on the substrate, wherein the isolation structure includes a plurality of isolation parts spaced apart from each other, and each isolation part encloses a plurality of isolation openings;

[0029] A light-emitting layer is prepared on a substrate, wherein the light-emitting layer includes light-emitting units located in the isolation openings;

[0030] A functional electrode layer is prepared on the side of the light-emitting layer away from the substrate. The functional electrode layer includes a first electrode located in each isolation opening and electrically connected to the isolation portion, so that the first electrode and the isolation portion connected thereto are reused as a touch electrode.

[0031] According to the display panel of the embodiment of the present application, the display panel includes a substrate, an isolation structure, a light-emitting layer and a functional electrode layer. The isolation structure includes isolation parts spaced apart from each other and isolation openings formed by the isolation parts. When preparing the light-emitting layer and the functional electrode layer, the light-emitting layer and the functional electrode layer are separated by the isolation parts to form light-emitting units and first electrodes located in each isolation opening, which can reduce the development and use of precision masks and reduce the production cost of the display panel. The light-emitting unit in the light-emitting layer is used to realize the light-emitting display of the display panel. The first electrode of the functional electrode layer is electrically connected to the isolation part, so that the first electrodes located in the isolation openings formed by the same isolation part are connected to each other as a whole through the isolation part, and serve as the light-emitting electrode of the light-emitting unit, and are reused as touch electrodes together with the isolation parts connected thereto, so as to reduce the process of the display panel. Since the isolation parts are spaced apart from each other, the touch electrodes are also spaced apart from each other, thereby realizing independent partition control between the touch electrodes and improving the performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Other features, objects and advantages of the present application will become more apparent by reading 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 and the accompanying drawings are not drawn to scale.

[0033] Figure 1 is a partial top view of a display panel provided in an embodiment of the present application;

[0034] Figure 2 yes Figure 1 Schematic cross-sectional view at AA in the middle;

[0035] Figure 3 is a partial cross-sectional view of a display panel in another embodiment;

[0036] Figure 4 is a partial top view of a display panel in another embodiment;

[0037] Figure 5 is a partial cross-sectional view of a display panel in yet another embodiment;

[0038] Figure 6 is a partial cross-sectional view of a display panel in yet another embodiment;

[0039] Figure 7 is a partial top view of a display panel in yet another embodiment;

[0040] Figure 8 is a partial cross-sectional view of a display panel in yet another embodiment;

[0041] Fig. 9 is a partial cross-sectional view of a display panel in yet another embodiment;

[0042] Fig.10 It is a schematic flow chart of a method for preparing a display panel provided in an embodiment of the present application.

[0043] Description of reference numerals:

[0044] 10. Display panel;

[0045] 100. Substrate;

[0046] 200, isolation structure; 201, isolation portion; 202, isolation opening; 203, first opening; 210, first conductive layer; 220, second layer; 230, third layer;

[0047] 300, light-emitting layer; 310, light-emitting unit;

[0048] 400, functional electrode layer; 410, first electrode;

[0049] 500, touch electrode; 501, first touch electrode block; 502, second touch electrode block; 503, first touch portion; 504, second touch portion; 510, touch connection line;

[0050] 600, signal line layer; 610, connection segment;

[0051] 700, pixel definition layer; 710, pixel defining portion; 720, pixel opening; 730, clearance opening; 740, pixel electrode;

[0052] 800, encapsulation layer; 810, first sublayer; 811, first subsection; 820, second sublayer; 821, second subsection; 830, third sublayer;

[0053] X, first direction. DETAILED DESCRIPTION

[0054] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0056] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0057] Embodiments of the present application provide a display panel, a display device, and a method for manufacturing a display panel. Embodiments of the display panel, the display device, and the method for manufacturing a display panel are described below in conjunction with the accompanying drawings.

[0058] An embodiment of the present application provides a display panel, which may be an organic light emitting diode (OLED) display panel.

[0059] Please also read Figure 1 and Figure 2 , Figure 1 is a partial top view of a display panel provided in an embodiment of the present application; Figure 2 yes Figure 1 Schematic cross-sectional view at AA in the middle.

[0060] like Figure 1 and Figure 2 As shown, the first aspect of the present application provides a display panel 10, which includes a substrate 100, an isolation structure 200, a light-emitting layer 300 and a functional electrode layer 400; the isolation structure 200 is located on the substrate 100, and the isolation structure 200 includes a plurality of isolation parts 201 spaced apart from each other, and each isolation part 201 encloses a plurality of isolation openings 202; the light-emitting layer 300 is located on the substrate 100, and the light-emitting layer 300 includes a light-emitting unit 310 located at the isolation opening 202; the functional electrode layer 400 is located on the side of the light-emitting layer 300 away from the substrate 100, and the functional electrode layer 400 includes a first electrode 410 located at each isolation opening 202 and electrically connected to the isolation part 201, so that the first electrode 410 and the isolation part 201 connected thereto are reused as a touch electrode 500.

[0061] According to the display panel 10 of the embodiment of the present application, the display panel 10 includes a substrate 100, an isolation structure 200, a light-emitting layer 300 and a functional electrode layer 400. The isolation structure 200 includes isolation portions 201 spaced apart from each other and isolation openings 202 formed by the isolation portions 201. When preparing the light-emitting layer 300 and the functional electrode layer 400, the light-emitting layer 300 and the functional electrode layer 400 are separated by the isolation portions 201 to form light-emitting units 310 and first electrodes 410 located in each isolation opening 202, which can reduce the development and use of precision masks and reduce the manufacturing cost of the display panel 10. The light-emitting units 310 in the light-emitting layer 300 are used to realize the light-emitting display of the display panel 10. The first electrodes 410 of the functional electrode layer 400 are electrically connected to the isolation part 201, so that the first electrodes 410 located in the isolation opening 202 formed by the same isolation part 201 are connected to each other through the isolation part 201 to form a whole, and serve as the light-emitting electrode of the light-emitting unit 310, and are reused as the touch electrode 500 together with the isolation part 201 connected thereto, so as to reduce the manufacturing process of the display panel 10. Since the isolation parts 201 are arranged at intervals from each other, the touch electrodes 500 are also arranged at intervals, so that independent partition control between the touch electrodes 500 is realized, and the performance of the display panel 10 is improved.

[0062] Please also read Figure 3 and Figure 4 , Figure 3 is a partial cross-sectional view of a display panel in another embodiment; Figure 4 FIG. 4 is a partial top view of a display panel in another embodiment. Figure 4 The touch electrode 500 is Figure 2 In the region enclosed by the same isolation portion 201, the isolation portion 201 and the first electrode 410 are simplified.

[0063] like Figure 3 and Figure 4 As shown, in some optional embodiments, the display panel 10 further includes a touch connection line 510 , one end of the touch connection line 510 is connected to the isolation portion 201 of the touch electrode 500 , and the other end is used to connect to a touch signal processing circuit.

[0064] In these optional embodiments, the touch connection line 510 connects the isolation portion 201 of the touch electrode 500 and the touch signal processing circuit to achieve signal transmission between the touch electrode 500 and the touch signal processing circuit, that is, to achieve the touch function of the display panel 10 .

[0065] Optionally, the projection areas of the touch electrodes 500 on the substrate 100 are the same, so that the transmission of the touch signals of the touch electrodes 500 is more balanced, the touch effects are close, and the touch uniformity is improved. The projection of the touch electrode 500 on the substrate 100 includes the projection of the isolation portion 201 and the first electrode 410 on the substrate 100.

[0066] The touch connection line 510 can be arranged in various ways. Figure 3 As shown, in some optional embodiments, a first opening 203 is formed between adjacent isolation portions 201 , and at least a portion of the touch connection line 510 is located in the first opening 203 .

[0067] In these optional embodiments, the isolation portions 201 are spaced apart from each other to form a first opening 203, and at least a portion of the touch connection line 510 is disposed in the first opening 203, on the same layer as the touch electrode 500, to facilitate the overlapping of the touch electrode 500 and the touch connection line 510 and simplify the preparation process.

[0068] Optionally, the touch connection line 510 and the isolation portion 201 are provided in the same layer and with the same material, so that the touch connection line 510 and the isolation portion 201 can be prepared simultaneously, thus simplifying the preparation process.

[0069] See also Figure 5 , Figure 5 is a partial cross-sectional view of a display panel in yet another embodiment.

[0070] like Figure 5 As shown, in some optional embodiments, the substrate 100 includes a signal line layer 600 , and the touch connection line 510 is located in the signal line layer 600 .

[0071] In these optional embodiments, the original signal line layer 600 of the substrate 100 is used for other signal transmission, such as driving signals, etc. The touch connection line 510 is arranged on the signal line layer 600, that is, the touch connection line 510 is prepared at the same time as the signal line layer 600, which reduces additional processes and simplifies the preparation process of the display panel 10.

[0072] There are many ways to set the substrate 100. For example, 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 signal line layer 600 arranged on one side of the substrate, and the signal line layer 600 includes a first signal line layer, a second signal line layer, and a third signal line layer arranged in a stacked manner. An insulating layer is provided between adjacent signal line layers 600. 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 the drain may be located in the third signal line layer.

[0073] There are many ways to connect the touch connection wire 510 and the touch electrode 500 . For example, when the touch connection wire 510 is disposed in the first opening 203 , the touch connection wire 510 and the touch electrode 500 can be directly overlapped in the first opening 203 .

[0074] like Figure 5 As shown, in some optional embodiments, the touch connection line 510 and the isolation portion 201 are connected via a via hole.

[0075] In these optional embodiments, when the touch connection line 510 and the isolation part 201 are located in different layers, since there is an insulating layer between the film layer where the touch connection line 510 is located and the film layer where the isolation part 201 is located, the touch connection line 510 and the isolation part 201 need to be interconnected by setting vias to achieve electrical connection between the touch electrode 500 and the touch signal processing circuit, thereby ensuring the normal touch function of the display panel 10.

[0076] See also Figure 6 , Figure 6 is a partial cross-sectional view of a display panel in yet another embodiment.

[0077] like Figure 6 As shown, in some optional embodiments, the display panel 10 also includes a connecting segment 610, which is arranged between the signal line layer 600 and the isolation structure 200, and one end of the connecting segment 610 is connected to the touch connection line 510, and the other end is connected to the first conductive layer 210 of the isolation part 201.

[0078] In these optional embodiments, when the touch connection line 510 is arranged in the signal line layer 600, the signal line layer 600 and the touch electrode 500 are located in different layers, and the touch connection line 510 and the touch electrode 500 can also be connected and conducted by setting a connecting section 610 to realize different connection forms between the touch connection line 510 and the touch electrode 500.

[0079] There are many ways to set the touch electrode 500. The touch electrode 500 can be a self-capacitive touch electrode 500 or a mutual-capacitive touch electrode 500. Figure 4 As shown, in some optional embodiments, a plurality of touch electrodes 500 are distributed in an array, and adjacent touch electrodes 500 are spaced apart to form a first opening 203. The touch electrodes 500 are self-capacitive touch electrodes 500, and each touch electrode 500 is independent of each other and does not affect each other, thereby realizing independent partition control of the touch electrodes 500, so that the touch signals and light-emitting signals of each touch electrode 500 area can be independently controlled.

[0080] See also Figure 7 , Figure 7 FIG. 4 is a partial top view of a display panel in yet another embodiment.

[0081] Or, if Figure 7 As shown, optionally, the first touch electrode block 501 and the second touch electrode block 502 are mutual capacitive touch electrodes 500, the touch electrode 500 includes the first touch electrode block 501 and the second touch electrode block 502, the first touch electrode block 501 and the second touch electrode block 502 both include a first touch portion 503 and a second touch portion 504, more than two first touch portions 503 are arranged side by side along a first direction X, and the second touch portions 504 connect adjacent first touch portions 503.

[0082] Optionally, when the touch electrode 500 is a mutual capacitance touch electrode 500, in at least two adjacent first touch electrode blocks 501 and second touch electrode blocks 502, the first touch portions 503 of the first touch electrode blocks 501 and the first touch portions 503 of the second touch electrode blocks 502 are alternately distributed along the first direction X.

[0083] In these optional embodiments, by alternately distributing the first touch portion 503 of the first touch electrode block 501 and the first touch portion 503 of the second touch electrode block 502 along the first direction X, the first touch electrode block 501 and the second touch electrode block 502 can be distributed at different positions of the display area, and the first touch electrode block 501 and the second touch electrode block 502 can be distributed more evenly at different positions of the display area.

[0084] In some optional embodiments, the isolation portion 201 includes a first conductive layer 210 and a second layer 220 located on a side of the first conductive layer 210 facing away from the substrate 100 , and the orthographic projection of the first conductive layer 210 on the substrate 100 is located within the orthographic projection of the second layer 220 on the substrate 100 .

[0085] In these optional embodiments, the first conductive layer 210 and the second layer 220 are arranged to form the isolation structure 200, the orthographic projection of the first conductive layer 210 arranged close to the substrate 100 on the substrate 100 is located within the orthographic projection of the second layer 220 on the substrate 100, the area of ​​the second layer 220 is larger than the area of ​​the first conductive layer 210, and the second layer 220 covers the surface of the first conductive layer 210 close to the second layer 220, and at this time, the first conductive layer 210 is recessed relative to the second layer 220 in a direction away from the isolation opening 202. When preparing the light-emitting layer 300, the light-emitting layer 300 has a large drop at the edge of the isolation structure 200, and the first conductive layer 210 is recessed relative to the second layer 220, and the light-emitting layer 300 is difficult to connect at the edge of the isolation structure 200, so it breaks, and the light-emitting layer 300 breaks to form mutually disconnected light-emitting units 310.

[0086] In some optional embodiments, the second layer 220 includes a conductive material or an insulating material.

[0087] In these optional embodiments, the second layer 220 includes a conductive material, for example, the second layer 220 includes a non-metallic conductive material or a metallic conductive material. When the second layer 220 is a non-metallic conductive material or an insulating material, the second layer 220 is difficult to be etched during wet etching of the first conductive layer 210 using an etching solution, so that the first conductive layer 210 is more easily concavely disposed relative to the second layer 220.

[0088] In some optional embodiments, the second layer 220 includes a metal material, and the first conductive layer 210 and the second layer 220 are made of different materials.

[0089] In these optional embodiments, when both the first conductive layer 210 and the second layer 220 are made of metal materials, the first conductive layer 210 may be wet-etched with an etching solution, and the etching solution may be set so that the etching rate of the second layer 220 is lower than the etching rate of the first conductive layer 210. Since the etching rate of the first conductive layer 210 is relatively high, when the etching solution is used for wet etching, even if the second layer 220 is etched to a certain extent, the first conductive layer 210 is etched faster, so that the first conductive layer 210 is set concave relative to the second layer 220.

[0090] See also Figure 8 , Figure 8 is a partial cross-sectional view of a display panel in yet another embodiment.

[0091] like Figure 8 As shown, in some optional embodiments, the isolation portion 201 further includes a third layer 230 located on the side of the first conductive layer 210 facing the substrate 100 , and the orthographic projection of the first conductive layer 210 on the substrate 100 is located within the orthographic projection of the third layer 230 on the substrate 100 .

[0092] In these optional embodiments, in order to obtain the first conductive layer 210 with a concave setting, the first conductive layer 210 has a faster etching rate relative to the second layer 220 and the third layer 230 during the etching process, thereby forming the concave first conductive layer 210. Since the etching rate of the first conductive layer 210 is relatively fast, the waste generated by etching is relatively large and easily enters other positions of the display panel 10, thereby causing adverse effects. After the third layer 230 is set, the first conductive layer 210 can be well attached to the third layer 230, and the generated etching waste falls on the third layer 230, which is easy to clean.

[0093] In some optional embodiments, the display panel 10 further includes a pixel definition layer 700 , which is located on the substrate 100 . The pixel definition layer 700 includes a pixel defining portion 710 and a pixel opening 720 formed by the pixel defining portion 710 , and the light-emitting unit 310 is located in the pixel opening 720 .

[0094] In these optional embodiments, the pixel defining portion 710 of the pixel defining layer 700 encloses a pixel opening 720 to set the light emitting unit 310 and realize normal light emission of the light emitting unit 310. In addition, the pixel defining portion 710 defines the setting area of ​​each light emitting unit 310 to reduce the cross-color defect between each light emitting unit 310.

[0095] Optionally, the orthographic projection of the pixel opening 720 on the substrate 100 is located within the orthographic projection of the isolation opening 202 on the substrate 100, so that the pixel opening 720 is completely exposed by the isolation opening 202, that is, the influence of the isolation portion 201 on the light emission of the light-emitting unit 310 can be reduced, thereby ensuring the display effect of the display panel 10.

[0096] In some optional embodiments, the isolation portion 201 is located on a side of the pixel defining portion 710 facing away from the substrate 100 .

[0097] In these optional embodiments, the isolation structure 200 is disposed on the pixel defining portion 710, and the isolation structure 200 has a large height difference equivalent to the pixel opening 720. When preparing the light-emitting layer 300, due to the large height difference, the light-emitting layer 300 is more easily disconnected at the isolation structure 200, thereby reducing the difficulty of preparing the light-emitting layer 300.

[0098] Optionally, the display panel 10 further includes a pixel electrode 740, and the pixel electrode 740 is exposed by the pixel opening 720. One of the pixel electrode 740 and the first electrode 410 serves as the anode of the light-emitting unit 310, and the other serves as the cathode of the light-emitting unit 310. In the embodiment of the present application, the pixel electrode 740 is used as the anode of the light-emitting unit 310, and the first electrode 410 is used as the cathode of the light-emitting unit 310 for illustration.

[0099] In some optional embodiments, a clearance opening 730 is opened on the pixel defining portion 710 , and the isolation portion 201 is located in the clearance opening 730 .

[0100] In these optional embodiments, the isolation structure 200 is disposed in the clearance opening 730 on the pixel defining portion 710. During the preparation process, the preparation step of the isolation structure 200 is performed before the preparation of the pixel electrode 740. That is, after the isolation structure 200 is prepared on the substrate 100, the pixel electrode 740 is prepared on the substrate 100, so as to reduce the impact of the preparation of the isolation structure 200 on the pixel electrode 740 and ensure that the pixel electrode 740 is not damaged.

[0101] See also Fig. 9 , Fig. 9 is a partial cross-sectional view of a display panel in yet another embodiment.

[0102] like Fig. 9 As shown, in some optional embodiments, the display panel 10 further includes an encapsulation layer 800 , and the encapsulation layer 800 is located on a side of the first electrode 410 facing away from the substrate 100 .

[0103] In these optional embodiments, the encapsulation layer 800 is disposed on the side of the first electrode 410 away from the substrate 100 to encapsulate the first electrode 410 and the light-emitting layer 300 , reduce the possibility of water and oxygen intrusion, and increase the service life of the display panel 10 .

[0104] In some optional embodiments, the encapsulation layer 800 includes a first sublayer 810 , and the first sublayer 810 is located on a side of the light emitting layer 300 facing away from the substrate 100 .

[0105] In these optional embodiments, the first sublayer 810 is disposed on the side of the first electrode 410 facing away from the substrate 100 to encapsulate the first electrode 410 and the light-emitting layer 300 , reduce the possibility of water and oxygen intrusion, and increase the service life of the display panel 10 .

[0106] Optionally, the first sublayer 810 includes a first sub-portion 811 , which is located in the isolation opening 202 and whose projection on the substrate 100 covers the light emitting unit 310 , so as to achieve a first packaging of the light emitting unit 310 and the first electrode 410 .

[0107] Optionally, the first sublayer 810 includes an inorganic material, which has good density and good barrier properties against water vapor and oxygen.

[0108] In some optional embodiments, the encapsulation layer 800 further includes a second sub-layer 820 , and the second sub-layer 820 is located on a side of the first sub-layer 810 facing away from the substrate 100 .

[0109] In these optional embodiments, the encapsulation layer 800 includes a first sub-layer 810 and a second sub-layer 820 , and the first sub-layer 810 and the second sub-layer 820 are used for multi-layer encapsulation to further improve the encapsulation performance of the encapsulation layer 800 .

[0110] Optionally, the second sub-layer 820 includes a second sub-portion 821 , and a portion of the second sub-portion 821 is filled in the first opening 203 to achieve planarization of the first opening 203 .

[0111] Optionally, the second sublayer 820 includes an organic material, and the second sublayer 820 is encapsulated by the organic material to further improve the encapsulation performance of the encapsulation layer 800 .

[0112] Optionally, the encapsulation layer 800 further includes a third sublayer 830 , which is located on the side of the second sublayer 820 away from the substrate 100 . The encapsulation layer 800 adopts three-layer encapsulation, has better encapsulation performance, and reduces the possibility of water and oxygen intrusion.

[0113] Optionally, the third sublayer 830 includes inorganic materials, and the first sublayer 810 , the second sublayer 820 and the third sublayer 830 are respectively encapsulated with inorganic materials, organic materials and inorganic materials to form a TFE (Thin Film Encapsulation, TFE) thin film encapsulation structure to further improve the encapsulation performance of the encapsulation layer 800 .

[0114] Optionally, the light emitting layer 300 includes an electron injection layer (EIL), an electron transport layer (ETL), a light emitting material layer, a hole injection layer (HIL) and a hole transport layer (HTL).

[0115] The structural design in this embodiment can be applied to other display panels 10 , and the specific selection can be made according to actual conditions, and this application does not impose any specific restrictions on it.

[0116] The embodiment of the second aspect of the present application also provides a display device, including the display panel 10 of any of the above-mentioned first aspect embodiments. Since the display device provided by the embodiment of the second aspect of the present application includes the display panel 10 of any of the above-mentioned first aspect embodiments, the display device provided by the embodiment of the second aspect of the present application has the beneficial effects of the display panel 10 of any of the above-mentioned first aspect embodiments, which will not be repeated here.

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

[0118] The third aspect of the present application also provides a method for preparing a display panel 10. The display panel 10 may be any of the display panels 10 provided in the first aspect of the present application. Figures 1 to 10 , Fig.10 1 is a schematic flow chart of a method for preparing a display panel provided in an embodiment of the present application. The preparation method comprises:

[0119] Step S01: preparing an isolation structure on a substrate, the isolation structure comprising a plurality of isolation parts spaced apart from each other, each isolation part enclosing a plurality of isolation openings.

[0120] Step S02: preparing a light-emitting layer on a substrate, wherein the light-emitting layer includes light-emitting units located in the isolation openings.

[0121] Step S03: preparing a functional electrode layer on the side of the light-emitting layer facing away from the substrate, the functional electrode layer comprising a first electrode located in each isolation opening and electrically connected to the isolation portion, so that the first electrode and the isolation portion connected thereto are reused as a touch electrode.

[0122] According to the preparation method of the embodiment of the present application, the isolation structure 200 is prepared by step S01, and the isolation structure 200 includes isolation parts 201 spaced apart from each other and isolation openings 202 formed by the isolation parts 201. Then, the light-emitting layer 300 is prepared by step S02. Finally, the functional electrode layer 400 is prepared by step S03. When preparing the light-emitting layer 300 and the functional electrode layer 400, the light-emitting layer 300 and the functional electrode layer 400 are separated by the isolation parts 201 to form light-emitting units 310 and first electrodes 410 located in each isolation opening 202, which can reduce the development and use of precision masks and reduce the production cost of the display panel 10. The light-emitting units 310 in the light-emitting layer 300 are used to realize the light-emitting display of the display panel 10. The first electrodes 410 of the functional electrode layer 400 are electrically connected to the isolation part 201, so that the first electrodes 410 located in the isolation opening 202 formed by the same isolation part 201 are connected to each other through the isolation part 201 to form a whole, and serve as the light-emitting electrode of the light-emitting unit 310, and are reused as the touch electrode 500 together with the isolation part 201 connected thereto, so as to reduce the manufacturing process of the display panel 10. Since the isolation parts 201 are arranged at intervals from each other, the touch electrodes 500 are also arranged at intervals, so that independent partition control between the touch electrodes 500 is realized, and the performance of the display panel 10 is improved.

[0123] According to the embodiments described above, these embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can make good use of the present application and the modifications based on the present application. The present application is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that: include: substrate; An isolation structure, located on the substrate, the isolation structure comprises a plurality of isolation parts spaced apart from each other, each of the isolation parts enclosing a plurality of isolation openings; A light-emitting layer, located on the substrate, wherein the light-emitting layer includes light-emitting units located in the isolation opening; The functional electrode layer is located on the side of the light-emitting layer away from the substrate, and includes a first electrode located in each of the isolation openings and electrically connected to the isolation portion, so that the first electrode and the isolation portion connected thereto are reused as touch electrodes.

2. The display panel according to claim 1, characterized in that: The display panel further includes: A touch connection line, one end of which is connected to the isolation portion of the touch electrode, and the other end of which is used to connect to the touch signal processing circuit; Preferably, the projection areas of the touch electrodes on the substrate are the same.

3. The display panel according to claim 2, characterized in that: A first opening is formed between adjacent isolation portions, and at least a portion of the touch connection line is located in the first opening; Preferably, the display panel further includes: The packaging layer is located on a side of the isolation structure away from the substrate, and at least a portion of the packaging layer is located in the first opening.

4. The display panel according to claim 2, characterized in that: The substrate comprises: A signal line layer, wherein the touch connection line is located in the signal line layer; Preferably, the touch connection line is connected to the isolation portion via hole; Preferably, the display panel further includes: The connecting segment is arranged between the signal line layer and the isolation structure, one end of the connecting segment is connected to the touch connection line, and the other end is connected to the first conductive layer of the isolation part.

5. The display panel according to claim 3, characterized in that: A plurality of the touch control electrodes are distributed in an array, and adjacent touch control electrodes are spaced apart to form the first opening, and the touch control electrodes are self-capacitive touch control electrodes.

6. The display panel according to claim 1, characterized in that: The touch electrode comprises a first touch electrode block and a second touch electrode block, the first touch electrode block and the second touch electrode block are mutual capacitance touch electrodes, the first touch electrode block and the second touch electrode block each comprise a first touch portion and a second touch portion, more than two first touch portions are arranged side by side along a first direction, and the second touch portions are connected to adjacent first touch portions; Preferably, in at least two adjacent first touch electrode blocks and second touch electrode blocks, the first touch portions of the first touch electrode blocks and the first touch portions of the second touch electrode blocks are alternately distributed along the first direction.

7. The display panel according to claim 1, characterized in that: The isolation portion includes a first conductive layer and a second layer located on a side of the first conductive layer away from the substrate, wherein an orthographic projection of the first conductive layer on the substrate is located within an orthographic projection of the second layer on the substrate; Preferably, the second layer comprises a conductive material or an insulating material; Preferably, the second layer comprises a metal material, and the first conductive layer and the second layer are made of different materials; Preferably, the isolation portion further includes a third layer located on a side of the first conductive layer facing the substrate, and an orthographic projection of the first conductive layer on the substrate is located within an orthographic projection of the third layer on the substrate.

8. The display panel according to claim 1, characterized in that: The display panel further includes: A pixel definition layer, located on the substrate, the pixel definition layer comprises a pixel definition portion and a pixel opening formed by the pixel definition portion, and the light emitting unit is located in the pixel opening; Preferably, the orthographic projection of the pixel opening on the substrate is located within the orthographic projection of the isolation opening on the substrate; Preferably, the isolation portion is located on a side of the pixel defining portion away from the substrate; Preferably, a clearance opening is provided on the pixel defining portion, and the isolation portion is located in the clearance opening; Preferably, the display panel further comprises a pixel electrode, and the pixel electrode is exposed from the pixel opening; Preferably, the display panel comprises an encapsulation layer, at least a portion of the encapsulation layer is located in the isolation opening and covers the light emitting unit in a projection on the substrate, and the portion of the encapsulation layer is located on a side of the light emitting unit away from the substrate.

9. A display device, characterized in that: A display panel comprising any one of claims 1 to 8.

10. A method for preparing a display panel, characterized in that: include: Preparing an isolation structure on a substrate, the isolation structure comprising a plurality of isolation parts spaced apart from each other, each of the isolation parts enclosing a plurality of isolation openings; Preparing a light-emitting layer on the substrate, wherein the light-emitting layer includes a light-emitting unit located in the isolation opening; A functional electrode layer is prepared on a side of the light-emitting layer away from the substrate, wherein the functional electrode layer includes a first electrode located in each of the isolation openings and electrically connected to the isolation portion, so that the first electrode and the isolation portion connected thereto are reused as a touch electrode.

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