Display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel comprises a substrate, a first electrode layer arranged on one side of the substrate, the first electrode layer comprising a plurality of first electrodes arranged at intervals, an isolation structure arranged on the same side of the substrate as the first electrode, the isolation structure being enclosed to form a plurality of isolation openings, at least part of the first electrodes being exposed from the isolation openings, a raised structure arranged in the isolation openings and at least partially surrounding the first electrodes, and a light-emitting layer comprising a raised portion arranged in the isolation openings, a light-emitting unit, and a connecting portion connected between the raised portion and the light-emitting unit, the raised portion being located on the surface of the raised structure away from the substrate, and the light-emitting unit being located on the side of the first electrode away from the substrate. The display panel provided by the application has good packaging effect and display reliability.

Description

Technical Field

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

[0002] Organic light-emitting diode (OLED) and flat panel display devices based on light-emitting diode (LED) technologies are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body and wide range of applications, becoming the mainstream of display devices.

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

[0004] This application provides a display panel and a display device, which aim to improve the packaging effect of the display panel, thereby improving the display reliability of the display panel.

[0005] An embodiment of the first aspect of this application provides a display panel, comprising: a substrate; a first electrode layer disposed on one side of the substrate, the first electrode layer including a plurality of spaced-apart first electrodes; an isolation structure disposed on the same side of the substrate as the first electrodes, the isolation structure enclosing to form a plurality of isolation openings, at least a portion of the first electrodes being exposed from the isolation openings; a raised structure disposed within the isolation openings, at least a portion surrounding the first electrodes; and a light-emitting layer including a raised portion disposed in the isolation openings, a light-emitting unit, and a connecting portion connecting the raised portion and the light-emitting unit, the raised portion being located on the surface of the raised structure facing away from the substrate, and the light-emitting unit being located on the side of the first electrodes facing away from the substrate.

[0006] According to the first aspect of this application, at least a portion of the connecting portion is located on the side of the raised structure away from the isolation structure, and the thickness of the connecting portion is less than the thickness of the raised portion and the thickness of the light-emitting unit.

[0007] According to any of the foregoing embodiments of the first aspect of this application, the light-emitting layer further includes a partition groove disposed in the connecting portion.

[0008] According to any of the foregoing embodiments of the first aspect of this application, at least a portion of the raised structure extends to the side of the first electrode opposite to the substrate.

[0009] According to any of the foregoing embodiments of the first aspect of this application, the first electrode includes a central portion and an edge portion surrounding the central portion, wherein the edge portion has a protrusion on the side facing away from the substrate.

[0010] According to any of the foregoing embodiments of the first aspect of this application, the isolation structure includes a pixel defining portion; or, the isolation structure includes an isolation portion and a blocking portion located on the side of the isolation portion away from the substrate, wherein the orthographic projection of the isolation portion on the substrate is located within the orthographic projection of the blocking portion on the substrate; or, the isolation structure includes a pixel defining portion, an isolation portion, and a blocking portion, wherein a padding structure is located on the side of the pixel defining portion facing the isolation opening, the isolation portion is located on the side of the pixel defining portion away from the substrate, the blocking portion is located on the side of the isolation portion away from the substrate, and the orthographic projection of the isolation portion on the substrate is located within the orthographic projection of the blocking portion on the substrate; or, the isolation structure includes a pixel defining portion, an isolation portion, and a blocking portion, wherein a padding structure is located on the side of the pixel defining portion facing the isolation opening, the pixel defining portion has a clearance opening, the isolation portion is located within the clearance opening, the blocking portion is located on the side of the isolation portion away from the substrate, and the orthographic projection of the isolation portion on the substrate is located within the orthographic projection of the blocking portion on the substrate.

[0011] According to any of the foregoing embodiments of the first aspect of this application, the isolation structure includes a pixel defining portion, an isolation portion, and a blocking portion, and the padding structure is located within the isolation opening and at least part of the padding structure is located on the side of the pixel defining portion away from the substrate.

[0012] According to any of the foregoing embodiments of the first aspect of this application, the surface of the raised structure facing away from the substrate has a preset distance between it and the substrate, and the preset distance is greater than the distance between the surface of the pixel limiting portion facing away from the substrate and the substrate.

[0013] According to any of the foregoing embodiments of the first aspect of this application, the orthographic projection of the raised structure on the substrate overlaps with the orthographic projection of at least a portion of the blocking portion on the substrate.

[0014] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes an insulating layer disposed on the side of the substrate facing the first electrode. The insulating layer includes a base and a protrusion structure located on the side of the base away from the substrate, and at least a portion of the first electrode is disposed on the side of the protrusion structure away from the substrate.

[0015] According to any of the foregoing embodiments of the first aspect of this application, the protrusion structure includes an edge protrusion and a central protrusion located within the isolation opening, the edge protrusion is disposed around the central protrusion, the padding structure is disposed on the side of the edge protrusion away from the substrate, and at least some of the light-emitting units are disposed on the side of the central protrusion away from the substrate.

[0016] According to any of the foregoing embodiments of the first aspect of this application, the edge protrusion includes a top surface and a side surface connected between the top surface and the base. The padding structure includes a top and a side portion connected to each other. The top portion is disposed on the side of the top surface away from the substrate, the side portion is disposed on the side of the side surface facing the central protrusion, the padding portion is disposed on the side of the top surface away from the substrate, and at least a portion of the connecting portion is disposed on the side portion away from the edge protrusion.

[0017] According to any of the foregoing embodiments of the first aspect of this application, at least a portion of the protruding structure is disposed between the isolation structure and the base, and / or, the insulating layer includes a flat region and a patterned region, the protruding structure is disposed on the side of the base located in the patterned region that is away from the substrate, the orthographic projection of the patterned region on the substrate is located within the orthographic projection of the isolation opening on the substrate, the flat region is located between adjacent patterned regions, and at least a portion of the isolation structure is disposed on the side of the base located in the flat region that is away from the substrate.

[0018] According to any of the foregoing embodiments of the first aspect of this application, at least a portion of the protrusion structure is disposed between the isolation structure and the base, the isolation structure including a pixel defining portion disposed on the side of the protrusion structure opposite to the substrate, the pixel defining portion having a recess recessed between two adjacent protrusion structures.

[0019] According to any of the foregoing embodiments of the first aspect of this application, the pixel limiting portion and the padding structure are made of the same material.

[0020] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes an encapsulation layer disposed on the side of the light-emitting layer away from the substrate, and at least a portion of the encapsulation layer is interconnected with the isolation structure on the side of the raised structure away from the connecting portion.

[0021] An embodiment of the second aspect of this application provides a display device, which includes a display panel of any of the above embodiments.

[0022] In a display panel provided in this application embodiment, the display panel includes a substrate, a first electrode layer, an isolation structure, a raised structure, and a light-emitting layer. The first electrode layer is disposed on one side of the substrate and includes a plurality of spaced-apart first electrodes. The orthographic projection of the isolation structure on the substrate at least partially surrounds the orthographic projection of the first electrodes on the substrate. The isolation structure can isolate adjacent first electrodes, making it less likely for short circuits to occur between adjacent first electrodes. At least a portion of the first electrode can be exposed from the isolation opening formed by the isolation structure. The raised structure is disposed within the isolation opening and surrounds the first electrode, so that the raised structure can have a certain height. When the light-emitting layer is formed, the raised structure can block at least a portion of the material of the light-emitting layer that is deposited at a certain angle relative to the substrate. The blocked portion of the light-emitting layer material can form a raised portion on the surface of the raised structure away from the substrate. Under the blocking effect of the raised structure, the material of the light-emitting layer can have a better spacing with the isolation structure, and the raised portion and the isolation structure have a better encapsulation area. This increases the path length of moisture intrusion into the light-emitting layer, thereby improving the encapsulation effect of the display panel, reducing the impact of moisture on the light emission of the light-emitting unit, and thus improving the display reliability of the display panel. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a partial cross-sectional view of a display panel provided in an embodiment of this application;

[0025] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle;

[0026] Figure 3 This is a partial cross-sectional view of a display panel provided in another embodiment of this application;

[0027] Figure 4 This is a partial cross-sectional view of a display panel provided in another embodiment of this application;

[0028] Figure 5 This is a partial cross-sectional view of a display panel provided in another embodiment of this application;

[0029] Figure 6 This is a partial cross-sectional view of a display panel provided in another embodiment of this application;

[0030] Figure 7 yes Figure 6 A magnified view of a portion of point B in the middle;

[0031] Figure 8 This is a partial cross-sectional view of a display panel provided in another embodiment of this application;

[0032] Figure 9 yes Figure 8 A magnified view of a portion of point C.

[0033] Explanation of reference numerals in the attached figures:

[0034] 10. Display panel;

[0035] 100. Substrate;

[0036] 200, Insulating layer; 210, Base; 220, Raised structure; 221, Edge protrusion; 221a, Top surface; 221b, Side surface; 222, Central protrusion; 223, Connecting protrusion;

[0037] 300, First electrode layer; 310, First electrode; 310a, Protrusion; 311, Center portion; 312, Edge portion;

[0038] 400, Isolation structure; 400a, Isolation opening; 410, Pixel limiting portion; 411, Recess; 420, Isolation portion; 430, Barrier portion;

[0039] 500, Elevated structure; 510, Top; 520, Side;

[0040] 600, Light-emitting layer; 610, Elevation part; 620, Light-emitting unit; 630, Connecting part; 640, Partition groove;

[0041] 700, Second electrode;

[0042] 800, Encapsulation layer. Detailed Implementation

[0043] The features and exemplary embodiments of various aspects of this application will now be described in detail. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this application and are not configured to limit this application. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples of this application.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0045] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.

[0046] Organic light-emitting diode (OLED) displays and flat panel displays based on light-emitting diode (LED) technologies are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body, and wide application range, becoming the mainstream display devices. However, in current display panels, the encapsulation effect is relatively poor, and the ends of the light-emitting units are easily corroded by moisture, which can easily reduce the light-emitting display effect of the display panel.

[0047] To address the aforementioned problems, this application provides a display panel and a display device. The following description, in conjunction with the accompanying drawings, will illustrate various embodiments of the display panel and the display device.

[0048] Figure 1 This is a partial cross-sectional view of a display panel 10 provided in an embodiment of this application. Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0049] like Figure 1 and Figure 2 As shown, an embodiment of the first aspect of this application provides a display panel 10, including: a substrate 100; a first electrode layer 300 disposed on one side of the substrate 100, the first electrode layer 300 including a plurality of spaced-apart first electrodes 310; and an isolation structure 400 disposed on the same side of the substrate 100 as the first electrodes 310, the isolation structure 400 forming a plurality of isolation openings 400a, the orthographic projection of the isolation structure 400 on the substrate 100 at least partially surrounding the orthographic projection of the first electrodes 310 on the substrate 100. A small portion of the first electrode 310 is exposed from the isolation opening 400a; a raised structure 500 is disposed within the isolation opening 400a and at least partially surrounds the first electrode 310; a light-emitting layer 600 includes a raised portion 610 disposed in the isolation opening 400a, a light-emitting unit 620, and a connecting portion 630 connecting the raised portion 610 and the light-emitting unit 620. The raised portion 610 is located on the surface of the raised structure 500 facing away from the substrate 100, and the light-emitting unit 620 is located on the side of the first electrode 310 facing away from the substrate 100.

[0050] In a display panel 10 provided in this application embodiment, the display panel 10 includes a substrate 100, a first electrode layer 300, an isolation structure 400, a raised structure 500, and a light-emitting layer 600. The first electrode layer 300 is disposed on one side of the substrate 100 and includes a plurality of spaced-apart first electrodes 310. The orthographic projection of the isolation structure 400 on the substrate 100 at least partially surrounds the orthographic projection of the first electrodes 310 on the substrate 100. Optionally, the isolation structures 400 between adjacent first electrodes 310 can be interconnected, so that the isolation structures 400 can be in a grid shape. Alternatively, the isolation structures 400 surrounding different first electrodes 310 can be unconnected, and each isolation structure 400 can be in an independent ring shape.

[0051] At least a portion of the first electrode 310 can be exposed from the isolation opening 400a formed by the isolation structure 400. The padding structure 500 is disposed within the isolation opening 400a and surrounds the first electrode 310, so that the padding structure 500 can have a certain height. When the light-emitting layer 600 is formed, the padding structure 500 can block at least a portion of the material of the light-emitting layer 600 that is deposited at a certain angle relative to the substrate 100. The blocked portion of the light-emitting layer 600 material can form a padding portion 610 on the surface of the padding structure 500 facing away from the substrate 100. Under the blocking effect of the padding structure 500, the material of the light-emitting layer 600 can have a better spacing with the isolation structure 400, so that the padding portion 610 and the isolation structure 400 have a better encapsulation area. This increases the path length for moisture to invade the light-emitting layer 600, thereby improving the encapsulation effect of the display panel 10, reducing the impact of moisture on the light emission of the light-emitting unit 620, and thus improving the display reliability of the display panel 10.

[0052] In the embodiment of this application, the display panel 10 may be an organic light-emitting diode (OLED) display panel.

[0053] The substrate 100 can be configured in various ways. For example, the substrate 100 may include a substrate and an array substrate disposed on the substrate, the array substrate including a pixel driving circuit. Optionally, the array substrate includes a first conductive layer, a second conductive layer, and a third conductive layer stacked together. Exemplarily, the pixel driving circuit disposed on the array substrate 100 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 electrode and a second electrode. As an example, the gate and the first electrode may be located on the first conductive layer, the second electrode may be located on the second conductive layer, and the source and drain may be located on the third conductive layer. Alternatively, the substrate 100 may be the same as the substrate. Alternatively, the substrate 100 may include a buffer layer and a support plate on the side facing away from the substrate.

[0054] like Figure 1 and Figure 2 As shown, in some optional embodiments, the display panel 10 further includes an encapsulation layer 800 disposed on the side of the light-emitting layer 600 away from the substrate 100. The encapsulation layer 800 can be used to encapsulate the devices in the display panel 10. For example, the encapsulation layer 800 can prevent moisture from easily penetrating the light-emitting layer 600, so that moisture is less likely to interfere with the light emission display of the light-emitting layer 600.

[0055] Optionally, at least a portion of the encapsulation layer 800 is connected to the isolation structure 400 on the side of the raised structure 500 away from the connecting portion 630, so that the encapsulation layer 800 has a relatively sufficient encapsulation area on both sides of the light-emitting layer 600, thereby further improving the encapsulation effect of the display panel 10.

[0056] In some embodiments, the display panel 10 may further include a second electrode 700 disposed on the side of the light-emitting layer 600 facing away from the substrate 100, the second electrode 700 being located between the light-emitting layer 600 and the encapsulation layer 800. The first electrode 310 and the second electrode 700 may serve as pixel electrodes, with one of the first electrode 310 and the second electrode 700 serving as an anode and the other as a cathode to drive the light-emitting structure to emit light. This application embodiment uses the first electrode 310 as the anode of the display panel 10 and the second electrode 700 as the cathode of the display panel 10 for illustrative purposes.

[0057] Optionally, at least a portion of the raised structure 500 extends to the side of the first electrode 310 away from the substrate 100, and at least a portion of the first electrode 310 is located between the raised structure 500 and the substrate 100, so as to further increase the height of the raised portion 610 located on the side of the raised structure 500 away from the substrate 100 relative to the substrate 100, and can further increase the slope of the connection portion 630 located between the raised portion 610 and the light-emitting unit 620 relative to the substrate 100, thereby further reducing the thickness of the connection portion 630.

[0058] like Figure 1 and Figure 2 As shown, optionally, the first electrode 310 includes a central portion 311 and an edge portion 312 surrounding the central portion 311. A protrusion 310a is provided on the side of the edge portion 312 facing away from the substrate 100. The edge portion 312 may be located on the side of the central portion 311 facing the isolation structure 400. The protrusion 310a provided on the edge portion 312 can reflect light incident thereon, thereby improving the light emission efficiency and display efficiency of the display panel 10.

[0059] Optionally, the protrusion 310a may be located on at least part of the padding structure 500 facing the substrate 100, so that the protrusion 310a can further increase the height of the padding portion 610 located on the side of the padding structure 500 away from the substrate 100 relative to the substrate 100, and can facilitate the reflection of the light emitted by the light-emitting unit 620 out of the isolation opening 400a, thereby improving the light emission efficiency and display efficiency of the display panel 10.

[0060] The light-emitting layer 600 may include a stacked hole injection layer (HIL), a hole transport layer (HTL), a light-emitting structure, an electron injection layer (EIL), and an electron transport layer (ETL). The raised portion 610, the light-emitting unit 620, and the connecting portion 630 of the light-emitting layer 600 may each have at least one of the aforementioned layered structures.

[0061] like Figure 2 As shown, in some embodiments, at least a portion of the connecting portion 630 may be located on the side of the raised structure 500 away from the isolation structure 400, and the thickness of the connecting portion 630 is less than the thickness of the raised portion 610 and the thickness of the light-emitting unit 620.

[0062] By providing a raised portion 610 on the side of the raised structure 500 away from the substrate 100, and at least a portion of the connecting portion 630 located on the side of the raised structure 500 away from the isolation structure 400, the raised portion 610 on the side of the raised structure 500 away from the substrate 100 can have a higher height relative to the substrate 100, and the connecting portion 630 between the raised portion 610 and the light-emitting unit 620 can have a larger slope relative to the substrate 100, making it easier for the material of the light-emitting layer 600 to be formed. The adhesion allows the thickness of the connecting portion 630 to be less than the thickness of the raised portion 610 and the thickness of the light-emitting unit 620. This makes it difficult for moisture to pass through the raised portion 610 and the thinner connecting portion 630 to reach the light-emitting unit 620 after the display panel 10 is encapsulated. This increases the path length for moisture to penetrate to the light-emitting unit 620, thereby improving the encapsulation effect of the display panel 10. It can also reduce the impact of moisture on the light emission of the light-emitting unit 620, and thus improve the display reliability of the display panel 10.

[0063] In some embodiments of this application, the thickness of each portion of the light-emitting layer 600 may refer to the distance between the surface of that portion facing the substrate 100 and the surface facing away from the substrate 100. For example, the thickness of the raised portion 610 may be the distance between the surface of the raised portion 610 facing the substrate 100 and the surface of the raised portion 610 facing away from the substrate 100. Optionally, the thickness of each portion of the light-emitting layer 600 may refer to the maximum or average distance between the surface of that portion facing the substrate 100 and the surface facing away from the substrate 100. For example, the thickness of the raised portion 610 may be the maximum or average distance between the surface of the raised portion 610 facing the substrate 100 and the surface of the raised portion 610 facing away from the substrate 100.

[0064] Optionally, the thickness of the connecting portion 630 is less than the thickness of the raised portion 610 and the thickness of the light-emitting unit 620. This can mean that the maximum thickness of the connecting portion 630 is less than the maximum thickness of the raised portion 610 and the maximum thickness of the light-emitting unit 620. That is, the maximum distance between the surface of the connecting portion 630 facing the substrate 100 and the surface of the connecting portion 630 away from the substrate 100 is less than the maximum distance between the surface of the raised portion 610 facing the substrate 100 and the surface of the raised portion 610 away from the substrate 100, and the maximum distance between the surface of the connecting portion 630 facing the substrate 100 and the surface of the connecting portion 630 away from the substrate 100 is less than the maximum distance between the surface of the light-emitting unit 620 facing the substrate 100 and the surface of the light-emitting unit 620 away from the substrate 100.

[0065] Alternatively, the thickness of the connecting portion 630 may be less than the thickness of the raised portion 610 and the thickness of the light-emitting unit 620. This can mean that the average thickness of the connecting portion 630 is less than the average thickness of the raised portion 610 and the average thickness of the light-emitting unit 620. In other words, the average distance between the surface of the connecting portion 630 facing the substrate 100 and the surface of the connecting portion 630 away from the substrate 100 is less than the average distance between the surface of the raised portion 610 facing the substrate 100 and the surface of the raised portion 610 away from the substrate 100, and the average distance between the surface of the connecting portion 630 facing the substrate 100 and the surface of the connecting portion 630 away from the substrate 100 is less than the average distance between the surface of the light-emitting unit 620 facing the substrate 100 and the surface of the light-emitting unit 620 away from the substrate 100.

[0066] Optionally, within an isolation opening 400a, the light-emitting unit 620 can play a primary role in light emission and display. The raised portion 610 and the connecting portion 630 can be located on both sides of the light-emitting unit 620 facing the isolation structure 400. That is, the raised structure 500 can be disposed on one side of the substrate 100 between the light-emitting unit 620 and the isolation structure 400. This makes it difficult for moisture on both sides of the light-emitting unit 620 to be transmitted to the light-emitting unit 620 through the raised portion 610 and the connecting portion 630 with a smaller thickness after the display panel 10 is encapsulated. This increases the path length for moisture to invade the light-emitting unit 620, thereby improving the encapsulation effect of the display panel 10. This can better reduce the impact of moisture on the light emission of the light-emitting unit 620 and better improve the display reliability of the display panel 10.

[0067] Therefore, when the light-emitting layer 600 is formed by vapor deposition, without changing the vapor deposition angle, there is no need to set up a large area of ​​shielding structure to block the vapor deposition of the light-emitting layer 600 material. That is, in addition to forming light-emitting units 620 on the first electrode 310 to realize the main light-emitting display of the display panel 10, part of the light-emitting layer 600 material can be vapor deposited on the padding structure 500 without being shielded, thereby forming the padding part 610 and the connecting part 630. Since the thickness of the connecting part 630 is small, the presence of the padding part 610 and the connecting part 630 does not easily affect the encapsulation effect of the display panel 10. That is, moisture is not easily transmitted to the light-emitting unit 620 through the padding part 610 and the relatively thin connecting part 630, increasing the path length of moisture intrusion to the light-emitting unit 620, so that the display panel 10 can still have a good encapsulation effect.

[0068] Optionally, the thickness of the connecting portion 630 can be much smaller than the thickness of the raised portion 610 and the thickness of the light-emitting unit 620, in order to limit the intrusion of moisture through the connecting portion 630 into the light-emitting unit 620. For example... Figure 2 As shown, optionally, the light-emitting layer 600 also includes a partition groove 640 disposed on the connecting portion 630. The partition groove 640 can effectively restrict the propagation of water vapor through the raised portion 610 and the connecting portion 630 to the light-emitting unit 620, thereby further improving the encapsulation effect of the display panel 10.

[0069] The isolation structure 400 can be used to divide the sub-pixels in the display panel 10. The first electrode 310 and at least part of the light-emitting layer 600 can be located within the isolation opening 400a. The isolation structure 400 can isolate the first electrode 310 and the light-emitting layer 600 between each sub-pixel. That is, the isolation structure 400 can isolate the first electrode 310 and the light-emitting layer 600 between adjacent isolation openings 400a, making it difficult for the first electrode 310 and the light-emitting layer 600 of adjacent sub-pixels to make direct contact, and also making it difficult for the light-emitting layers 600 between adjacent sub-pixels to crosstalk, thereby improving the working stability of each sub-pixel.

[0070] There are several specific structural configurations for the isolation structure 400. For example... Figure 1 and Figure 2 As shown, in some optional embodiments, the isolation structure 400 may include a pixel defining portion 410. In this embodiment, a mask can be used as a masking structure to block the evaporation of the light-emitting layer 600 material. The mask opening on the mask does not need to be too small, that is, the mask can have a large mask opening to facilitate the production and preparation of the mask. At least a portion of the light-emitting layer 600 material can be deposited above the padding structure 500 through the large mask opening to form a padding portion 610 and a connecting portion 630 that do not easily affect the encapsulation effect.

[0071] Figure 3 This is a partial cross-sectional view of a display panel 10 provided in another embodiment of this application.

[0072] like Figure 3 As shown, or in some alternative embodiments, the isolation structure 400 may include an isolation portion 420 and a blocking portion 430 located on the side of the isolation portion 420 facing away from the substrate 100. The orthographic projection of the isolation portion 420 on the substrate 100 lies within the orthographic projection of the blocking portion 430 on the substrate 100. By setting the orthographic projection of the isolation portion 420 on the substrate 100 to lie within the orthographic projection of the blocking portion 430 on the substrate 100, the isolation structure 400 can serve as a blocking structure for blocking the evaporation of the light-emitting layer 600 material. When the light-emitting layer 600 or the second electrode 700 is evaporated, at least a portion of the material of the light-emitting layer 600 or the second electrode 700 can be blocked by the blocking portion 430, so as to better achieve the isolation of the light-emitting layer 600 or the second electrode 700 between adjacent sub-pixels. Therefore, by setting the isolation structure 400, it is possible to form multiple light-emitting layers 600 and second electrodes 700 located in different pixel openings and spaced apart, without setting a high-precision mask when evaporating the light-emitting layer 600 and the second electrode 700, thereby effectively reducing the production cost of the display panel 10.

[0073] Optionally, the raised structure 500 can be spaced apart from the isolation section 420, or as... Figure 3 As shown, the raised structure 500 can be connected to the isolation part 420 to facilitate the formation of the raised structure 500.

[0074] In this embodiment, there is no need to set a large-sized barrier portion 430 to block the material of the light-emitting layer 600. That is, in addition to a portion of the material of the light-emitting layer 600 being able to form a light-emitting unit 620 on the first electrode 310 through the isolation opening 400a to realize the main light-emitting display of the display panel 10, a portion of the material of the light-emitting layer 600 can also be deposited onto the padding structure 500 through the isolation opening 400a without being blocked by the barrier portion 430, thereby forming the padding portion 610 and the connecting portion 630. Moreover, since the thickness of the connecting portion 630 is small, the presence of the padding portion 610 and the connecting portion 630 does not easily affect the encapsulation effect of the display panel 10. That is, moisture is not easily transmitted to the light-emitting unit 620 through the padding portion 610 and the relatively thin connecting portion 630, increasing the path length for moisture to invade the light-emitting unit 620, so that the display panel 10 can still have a good encapsulation effect. Therefore, the isolation opening 400a formed by the isolation structure 400 can have a large size, so that the blocking part 430 is less likely to block the light emitted from the isolation opening 400a, thereby improving the pixel density unit (Pixels Per Inch, PPI) of the display panel 10 and giving the display panel 10 a better display effect.

[0075] Optionally, the raised structure 500 and a portion of the isolation structure 400 are spaced apart. At least a portion of the encapsulation layer 800 is connected to the raised structure 500 on the side of the raised structure 500 away from the connecting portion 630, and further extends to the sidewall of the isolation structure 400 and connects with the isolation structure 400, increasing the bonding area between the encapsulation layer 800 and other film layers, so that the encapsulation layer 800 has a relatively sufficient encapsulation area on both sides of the light-emitting layer 600, thereby further improving the encapsulation effect of the display panel 10.

[0076] Alternatively, in some alternative embodiments, the isolation structure 400 may include a pixel defining portion 410, an isolation portion 420, and a blocking portion 430. The pixel defining portion 410 has a clearance opening, the isolation portion 420 is located within the clearance opening, and the blocking portion 430 is located on the side of the isolation portion 420 facing away from the substrate 100. The orthographic projection of the isolation portion 420 on the substrate 100 is located within the orthographic projection of the blocking portion 430 on the substrate 100. By providing a clearance opening and placing the isolation portion 420 within the clearance opening, the height of the isolation structure 400 can be reduced more effectively, thereby reducing the thickness of the display panel 10.

[0077] Figure 4 This is a partial cross-sectional view of a display panel 10 provided in another embodiment of this application.

[0078] like Figure 4As shown, or in some alternative embodiments, the isolation structure 400 may include a pixel defining portion 410, an isolation portion 420, and a blocking portion 430. The isolation portion 420 is located on the side of the pixel defining portion 410 facing away from the substrate 100, and the blocking portion 430 is located on the side of the isolation portion 420 facing away from the substrate 100. The orthographic projection of the isolation portion 420 on the substrate 100 lies within the orthographic projection of the blocking portion 430 on the substrate 100. For ease of description, the following embodiments are described using the isolation structure 400 including the pixel defining portion 410, the isolation portion 420, and the blocking portion 430 as an example.

[0079] The raised structure 500 has a preset distance between its surface away from the substrate 100 and the substrate 100. Optionally, when the pixel limiting portion 410 is directly formed on the substrate 100, the preset distance can be greater than the distance between the surface of the pixel limiting portion 410 away from the substrate 100 and the substrate 100. By setting the preset distance to be greater than the distance between the surface of the pixel limiting portion 410 away from the substrate 100 and the substrate 100, the raised structure 500 can be higher than the height of the pixel limiting portion 410. This allows the raised structure 500 to have a better height and makes it less susceptible to the influence of the pixel limiting portion 410 during its formation. This facilitates adjusting the slope of the side portion 520 of the raised structure 500, thereby better increasing the height of the raised portion 610 and reducing the thickness of the connecting portion 630.

[0080] Optionally, the orthographic projection of the raised structure 500 on the substrate 100 overlaps with the orthographic projection of at least a portion of the blocking portion 430 on the substrate 100, so that the blocking portion 430 can have a better size to block the material of the light-emitting layer 600, so that the light-emitting layer 600 is not easily located between the raised structure 500 and the isolation structure 400, so that there can be a more sufficient encapsulated area between the raised structure 500 and the isolation structure 400, thereby improving the encapsulation effect of the display panel 10.

[0081] Optionally, the orthographic projection of the top 510 on the substrate 100 may be located within the orthographic projection of the barrier portion 430 on the substrate 100, so as to further prevent the material of the light-emitting layer 600 from being located between the padding structure 500 and the isolation structure 400, so that there is a sufficient encapsulation area between the padding structure 500 and the isolation structure 400, thereby improving the encapsulation effect of the display panel 10.

[0082] Optionally, the second electrode 700 may be connected to the isolation portion 420 of the isolation structure 400, and the material of the isolation portion 420 may include a conductive material, so that the second electrodes 700 between adjacent sub-pixels can be electrically connected through the isolation portion 420, thereby enabling multiple second electrodes 700 to be interconnected as surface electrodes. Or optionally, as... Figure 4As shown, the second electrode 700 can be spaced apart from the isolation structure 400, allowing individual control of the second electrode 700 of each sub-pixel. For ease of description, the following embodiments will be described using the example of the second electrode 700 being spaced apart from the isolation structure 400.

[0083] Figure 5 This is a partial cross-sectional view of a display panel 10 provided in another embodiment of this application.

[0084] Optionally, the shim structure 500 may be located on the side of the pixel defining portion 410 facing the isolation opening 400a. Optionally, the side of the pixel defining portion 410 facing the isolation opening 400a may be connected to the shim structure 500 to facilitate the formation of the shim structure 500.

[0085] Optional, such as Figure 4 As shown, at least the partially raised structure 500 may be located on the side of the pixel defining portion 410 facing away from the substrate 100; and / or, as Figure 5 As shown, at least a portion of the raised structure 500 may be located on the side of the pixel defining portion 410 facing the first electrode 310. Wherein, as Figure 4 As shown, the raised structure 500 can be formed separately from the pixel limiting part 410, or as... Figure 5 As shown, the elevation structure 500 can be integrally formed with the pixel defining portion 410. For ease of description, the following embodiments will be described using the example that at least a portion of the elevation structure 500 can be located on the side of the pixel defining portion 410 facing the first electrode 310.

[0086] In some optional embodiments, the pixel defining portion 410 and the padding structure 500 may be made of the same material, so that the pixel defining portion 410 and the padding structure 500 can be fabricated using the same process equipment. For example, after the pixel defining portion 410 is fabricated, the padding structure 500 can be fabricated without changing the equipment, which can simplify the fabrication process of the display panel 10 and improve the fabrication efficiency of the display panel 10.

[0087] Optionally, the pixel defining portion 410 and the padding structure 500 are integrally formed. By making the pixel defining portion 410 and the padding structure 500 integrally formed, the pixel defining portion 410 and the padding structure 500 can be formed in a single process step, thereby simultaneously forming the pixel defining portion 410 and the padding structure 500, improving the production efficiency of the display panel 10. For example, when forming the pixel defining portion 410, at least a portion of the material of the pixel defining portion 410 can be located on the side of the first electrode 310 facing away from the substrate 100 to form the padding structure 500.

[0088] Figure 6 This is a partial cross-sectional view of a display panel 10 provided in another embodiment of this application. Figure 7 yes Figure 6 A magnified view of a portion of point B in the middle.

[0089] like Figure 5 and Figure 6 As shown, in some optional embodiments, the display panel 10 further includes an insulating layer 200 disposed on the side of the substrate 100 facing the first electrode 310. The insulating layer 200 includes a base 210 and a protrusion structure 220 located on the side of the base 210 away from the substrate 100. At least a portion of the first electrode 310 is disposed on the side of the protrusion structure 220 away from the substrate 100, so that the light-emitting layer 600 located on the side of the insulating layer 200 away from the substrate 100 can have a larger light-emitting area due to the influence of the protrusion structure 220, thereby improving the light emission efficiency and display effect of the display panel 10.

[0090] In the embodiments of this application, the shape of the protrusion structure 220 can be configured in various ways. Optionally, the surface of the protrusion structure 220 can be an arc surface, so that the structure formed on the protrusion structure 220 is not easily damaged by the shape of the protrusion structure 220.

[0091] In some alternative embodiments, the protrusion structure 220 includes an edge protrusion 221 and a central protrusion 222 located within the isolation opening 400a. The edge protrusion 221 is disposed around the central protrusion 222. The padding structure 500 is disposed on the side of the edge protrusion 221 away from the substrate 100. At least a portion of the light-emitting units 620 are disposed on the side of the central protrusion 222 away from the substrate 100.

[0092] Optionally, the size and shape of the central protrusion 222 and the edge protrusion 221 can be the same to facilitate the fabrication of the protrusion structure 220, so that the central protrusion 222 and the edge protrusion 221 can be formed in one process step, thereby improving the fabrication efficiency of the display panel 10.

[0093] Optionally, the side of the edge protrusion 221 facing away from the central protrusion 222 can be connected to the pixel limiting part 410, so that the pixel opening can have a sufficient area to arrange the central protrusion 222, that is, the pixel opening can have a sufficient area to arrange the light-emitting unit 620, so as to improve the structural compactness of the display panel 10.

[0094] In these optional embodiments, the light-emitting unit 620 disposed on the central protrusion 222 and the base 210 can play the main role of light emission and display. The padding structure 500 disposed on the edge protrusion 221 can effectively raise the padding portion 610, so that the padding structure 500 and the first electrode 310 at the connection portion 630 have a large slope, making it difficult for the material of the light-emitting layer 600 to adhere. As a result, the thickness of the connection portion 630 can be less than the thickness of the padding portion 610 and the thickness of the light-emitting unit 620, so that water vapor on both sides of the light-emitting unit 620 is not easily transmitted to the light-emitting unit 620 through the padding portion 610 and the thinner connection portion 630. This increases the path length for water vapor to invade the light-emitting unit 620, thereby enabling the display panel 10 to have a better encapsulation effect.

[0095] Optionally, a protrusion 310a may also be provided on the side of the center portion 311 of the first electrode 310 facing away from the substrate 100. Optionally, the first electrode 310 located on the side of the insulating layer 200 facing away from the substrate 100 may form a protrusion 310a following the undulating shape of the protrusion structure 220. Optionally, the orthographic projection of the protrusion 310a on the substrate 100 overlaps with the orthographic projection of at least a portion of the protrusion structure 220 on the substrate 100.

[0096] In some alternative embodiments, the edge protrusion 221 includes a top surface 221a and a side surface 221b connecting the top surface 221a and the base 210. The padding structure 500 includes a top 510 and a side 520 connected to each other. The top 510 is disposed on the side of the top surface 221a away from the substrate 100, and the side 520 is disposed on the side of the side surface 221b facing the central protrusion 222.

[0097] Optionally, the raised portion 610 is disposed on the side of the top 510 away from the substrate 100, and at least part of the connecting portion 630 is disposed on the side portion 520 away from the edge protrusion 221.

[0098] In these optional embodiments, by reasonably setting the thickness of the top 510 and the side 520 of the raised structure 500, the slope of the side 520 can be better adjusted, so as to better adjust the adhesion ability of the light-emitting layer 600 material on the side 520, thereby better adjusting the thickness of the connecting part 630, and thus better restricting water vapor from entering the light-emitting unit 620 through the connecting part 630.

[0099] Optionally, a portion of the connection portion 630 may also be located on a portion of the first electrode 310 on the side of the edge protrusion 221 facing the substrate 100, such that the thickness of the connection portion 630 can be adjusted by the slope of the surface of the first electrode 310 facing the central protrusion 222 and the slope of the side portion 520.

[0100] Figure 8This is a partial cross-sectional view of a display panel 10 provided in another embodiment of this application. Figure 9 yes Figure 8 A magnified view of a portion of point C.

[0101] In some embodiments, the isolation structure 400 may be disposed on the side of the insulating layer 200 facing away from the substrate 100. Optionally, such as Figure 6 and Figure 7 As shown, at least a portion of the protrusion structure 220 is disposed between the isolation structure 400 and the base 210, that is, at least a portion of the isolation structure 400 may be disposed on the surface of the protrusion structure 220 facing away from the substrate 100, and / or, as shown Figure 8 and Figure 9 As shown, at least a portion of the isolation structure 400 is disposed on the side of the base 210 away from the substrate 100, that is, at least a portion of the isolation structure 400 can be disposed on the surface of the base 210 away from the substrate 100.

[0102] like Figure 6 and Figure 7 As shown, in some optional embodiments, when at least a portion of the protrusion structure 220 is disposed between the isolation structure 400 and the base 210, that is, when at least a portion of the isolation structure 400 is disposed on the surface of the protrusion structure 220 facing away from the substrate 100, the protrusion structure 220 may further include a connecting protrusion 223 located between the isolation structure 400 and the substrate 100.

[0103] Optionally, the size and shape of the connecting protrusion 223, the central protrusion 222 and the edge protrusion 221 can be the same to facilitate the fabrication of the protrusion structure 220, so that the connecting protrusion 223, the central protrusion 222 and the edge protrusion 221 can be fabricated in one process step, thereby improving the fabrication efficiency of the display panel 10.

[0104] In this embodiment, by also providing a protrusion structure 220 between the pixel defining portion 410 and the substrate 100, no additional processing of the insulating layer 200 is required before forming the pixel defining portion 410. For example, after performing a patterning process on the insulating layer 200 to form the protrusion structure 220, the pixel defining portion 410 can be directly formed on the protrusion structure 220, thereby further improving the manufacturing efficiency of the display panel 10.

[0105] Optionally, the pixel limiting portion 410 has a recess 411 recessed between two adjacent connecting protrusions 223.

[0106] The pixel limiting portion 410 may have a small thickness, so that when the pixel limiting portion 410 is formed, the pixel limiting portion 410 can form a recess 411 under the influence of the shape of the connecting protrusion 223, so that the pixel limiting portion 410 can also be undulating.

[0107] like Figure 8 and Figure 9 As shown, in some alternative embodiments, when at least a portion of the isolation structure 400 is disposed on the side of the base 210 away from the substrate 100, that is, when at least a portion of the isolation structure 400 is disposed on the surface of the base 210 away from the substrate 100. The insulating layer 200 includes a flat region and a patterned region. The protrusion structure 220 is disposed on the side of the base 210 away from the substrate 100 located within the patterned region. The orthographic projection of the patterned region on the substrate 100 is located within the orthographic projection of the pixel opening on the substrate 100. The flat region is located between adjacent patterned regions. At least a portion of the isolation structure 400 is disposed on the side of the base 210 away from the substrate 100 within the flat region.

[0108] In this embodiment, by providing a flat area on the insulating layer 200, when forming the pixel defining portion 410, the material of the pixel defining portion 410 can be better accommodated on the base 210 of the adjacent patterned area, so as to facilitate the formation of the pixel defining portion 410, and the surface of the pixel defining portion 410 facing away from the substrate 100 can have better flatness, so as to facilitate the formation of other structures on the pixel defining portion 410, for example, it is easy to form the isolation portion 420 and the barrier portion 430 on the pixel defining portion 410.

[0109] Optionally, the surface of the raised structure 500 facing away from the substrate 100 has a preset distance from the substrate 100, which is greater than the distance between the surface of the pixel limiting portion 410 facing away from the substrate 100 and the substrate 100. By setting the preset distance to be greater than the distance between the surface of the pixel limiting portion 410 facing away from the substrate 100 and the substrate 100, the raised structure 500 can be higher than the height of the pixel limiting portion 410. This allows the raised structure 500 to have a better height and makes it less susceptible to the influence of the pixel limiting portion 410 during its formation. This facilitates the adjustment of the slope of the side portion 520 of the raised structure 500, thereby better increasing the height of the raised portion 610 and reducing the thickness of the connecting portion 630.

[0110] The second aspect of this application provides a display device, which includes the display panel 10 of any of the above embodiments. Since the display device provided by the second aspect of this application includes the display panel 10 of any of the first aspects, it has the beneficial effects of the display panel 10 of any of the first aspects, which will not be repeated here.

[0111] The display devices in this application include, but are not limited to, mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, control consoles, and other devices with display functions.

[0112] The embodiments described above are not exhaustive and do not limit the invention to specific examples. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to effectively utilize this application and its modifications. This application is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that, include: substrate; A first electrode layer is disposed on one side of the substrate, and the first electrode layer includes a plurality of first electrodes disposed at intervals. An isolation structure is disposed on the same side of the substrate as the first electrode. The isolation structure encloses and forms a plurality of isolation openings, and at least a portion of the first electrode is exposed from the isolation openings. The isolation structure includes a pixel defining portion, an isolation portion, and a blocking portion. The blocking portion is located on the side of the isolation portion away from the substrate, and the orthographic projection of the isolation portion on the substrate is located within the orthographic projection of the blocking portion on the substrate. A raised structure is disposed within the isolation opening, at least partially surrounding the first electrode, and at least a portion of the raised structure is located on the side of the pixel defining portion opposite to the substrate, the raised structure being integrally formed with the pixel defining portion; The light-emitting layer includes a raised portion disposed in the isolation opening, a light-emitting unit, and a connecting portion connecting the raised portion and the light-emitting unit. The raised portion is located on the surface of the raised structure facing away from the substrate, and the light-emitting unit is located on the side of the first electrode facing away from the substrate. The orthographic projection of the light-emitting layer on the substrate and the orthographic projection of the blocking portion on the substrate at least partially overlap, and the light-emitting layer and the isolation structure are spaced apart.

2. The display panel according to claim 1, characterized in that, At least a portion of the connecting portion is located on the side of the raised structure opposite to the isolation structure, and the thickness of the connecting portion is less than the thickness of the raised portion and the thickness of the light-emitting unit.

3. The display panel according to claim 2, characterized in that, The light-emitting layer also includes a partition groove disposed in the connecting portion.

4. The display panel according to claim 1, characterized in that, At least a portion of the raised structure extends to the side of the first electrode opposite to the substrate.

5. The display panel according to claim 1, characterized in that, The first electrode includes a central portion and an edge portion surrounding the central portion, and the edge portion has a protrusion on the side opposite to the substrate.

6. The display panel according to claim 1, characterized in that, The isolation portion is located on the side of the pixel limiting portion opposite to the substrate; Alternatively, the pixel defining portion has a clearance opening, and the isolation portion is located within the clearance opening.

7. The display panel according to claim 6, characterized in that, Part of the raised structure is located within the isolation opening.

8. The display panel according to claim 6, characterized in that, The surface of the raised structure facing away from the substrate has a preset distance from the substrate, and the preset distance is greater than the distance between the surface of the pixel limiting portion facing away from the substrate and the substrate.

9. The display panel according to claim 6, characterized in that, The orthographic projection of the raised structure on the substrate overlaps with the orthographic projection of at least a portion of the blocking portion on the substrate.

10. The display panel according to claim 1, characterized in that, The display panel further includes an insulating layer disposed on the side of the substrate facing the first electrode. The insulating layer includes a base and a protrusion structure located on the side of the base away from the substrate. At least a portion of the first electrode is disposed on the side of the protrusion structure away from the substrate.

11. The display panel according to claim 10, characterized in that, The protrusion structure includes an edge protrusion and a central protrusion located within the isolation opening. The edge protrusion is arranged around the central protrusion. The padding structure is arranged on the side of the edge protrusion away from the substrate. At least a portion of the light-emitting units are arranged on the side of the central protrusion away from the substrate.

12. The display panel according to claim 11, characterized in that, The edge protrusion includes a top surface and a side surface connecting the top surface and the base. The padding structure includes a top and a side portion connected to each other. The top portion is disposed on the side of the top surface away from the substrate. The side portion is disposed on the side of the side surface facing the central protrusion. The padding portion is disposed on the side of the top surface away from the substrate. At least a portion of the connecting portion is disposed on the side portion away from the edge protrusion.

13. The display panel according to claim 10, characterized in that, At least a portion of the protruding structure is disposed between the insulating structure and the base, and / or, the insulating layer includes a flat region and a patterned region, the protruding structure is disposed on the side of the base opposite to the substrate located within the patterned region, the orthographic projection of the patterned region on the substrate is located within the orthographic projection of the insulating opening on the substrate, the flat region is located between adjacent patterned regions, and at least a portion of the insulating structure is disposed on the side of the base opposite to the substrate within the flat region.

14. The display panel according to claim 11, characterized in that, At least a portion of the protrusions are disposed between the isolation structure and the base, and the pixel defining portion has a recess between two adjacent protrusions.

15. The display panel according to any one of claims 6-9 or 14, characterized in that, The pixel defining portion and the padding structure are made of the same material.

16. The display panel according to any one of claims 1 to 14, characterized in that, The display panel further includes an encapsulation layer disposed on the side of the light-emitting layer opposite to the substrate, and at least a portion of the encapsulation layer is interconnected with the isolation structure on the side of the raised structure opposite to the connecting portion.

17. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 16.

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