Display panel, display device and preparation method of display panel

Abstract

Embodiments of the present application provide a display panel, a display device and a preparation method of the display panel. The display panel comprises a substrate, a leakage current transmission layer, a light-emitting functional layer and a partition structure. The leakage current transmission layer is located on one side of the substrate and comprises a leakage current transmission part. The light-emitting functional layer comprises a plurality of light-emitting functional parts arranged at intervals, and each light-emitting functional part comprises a light-emitting layer. At least part of the leakage current transmission part and the light-emitting layer are arranged in a stacked manner along the thickness direction of the substrate. The partition structure is arranged at least between adjacent light-emitting functional parts, and comprises a conductive material. At least part of the leakage current transmission part is electrically connected to the conductive material of the partition structure. In the display panel provided by the embodiments of the present application, the control ability of the driving current in the display panel can be improved.

Description

Technical Field

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

[0002] Organic light-emitting diodes (OLEDs) and flat panel displays based on light-emitting diodes (LEDs) 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, a display device, and a method for manufacturing the display panel, aiming to improve the control capability of the driving current in the display panel.

[0005] An embodiment of the first aspect of this application provides a display panel, comprising: a substrate; a leakage current transmission layer located on one side of the substrate, the leakage current transmission layer including leakage current transmission portions; a light-emitting functional layer, the light-emitting functional layer including a plurality of light-emitting functional portions spaced apart, each light-emitting functional portion including a light-emitting layer, at least a portion of the leakage current transmission portions and the light-emitting layer being stacked together along the thickness direction of the substrate; and a partition structure at least disposed between adjacent light-emitting functional portions, the partition structure including a conductive material; wherein at least a portion of the leakage current transmission portions is electrically connected to the conductive material of the partition structure.

[0006] According to an embodiment of the first aspect of this application, the light-emitting functional part is disposed on the side of the leakage current transmission part away from the substrate.

[0007] According to any of the foregoing embodiments of the first aspect of this application, the light-emitting functional part further includes at least one of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer.

[0008] According to any of the foregoing embodiments of the first aspect of this application, the light-emitting functional part includes a hole injection layer located between the light-emitting layer and the leakage current transmission part.

[0009] According to any of the foregoing embodiments of the first aspect of this application, at least a portion of the leakage current transmission portion is in contact with the conductive material of the isolation structure.

[0010] According to any of the foregoing embodiments of the first aspect of this application, the orthogonal projection of the light-emitting layer on the substrate is located within the orthogonal projection of the leakage current transmission portion on the substrate, and the area of ​​the orthogonal projection of the light-emitting layer on the substrate is smaller than the area of ​​the orthogonal projection of the leakage current transmission portion on the substrate.

[0011] According to any of the foregoing embodiments of the first aspect of this application, the orthogonal projection of the hole injection layer on the substrate is located within the orthogonal projection of the light-emitting layer on the substrate, and the area of ​​the orthogonal projection of the hole injection layer on the substrate is smaller than the area of ​​the orthogonal projection of the light-emitting layer on the substrate.

[0012] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes a first electrode layer, the first electrode layer including a plurality of first electrodes, the first electrodes being located on the side of the light-emitting functional part closer to the substrate.

[0013] According to any of the foregoing embodiments of the first aspect of this application, the leakage current transmission section is located on the side of the light-emitting layer near the substrate, and the first electrode is located on the side of the leakage current transmission section near the substrate, or the leakage current transmission section is multiplexed as the first electrode.

[0014] According to any of the foregoing embodiments of the first aspect of this application, at least a portion of the leakage current transmission section is multiplexed as the first electrode, and the display panel further includes a plurality of pixel circuits, the pixel circuits being electrically connected to the first electrode.

[0015] According to any of the foregoing embodiments of the first aspect of this application, at least a portion of the leakage current transmission section is reused as a first electrode. The leakage current transmission section includes a main body and a connecting segment, the connecting segment being connected between the conductive material of the isolation structure and the main body.

[0016] According to any of the foregoing embodiments of the first aspect of this application, there are multiple connecting segments, which extend from the main body to the partition structure and are spaced apart in the circumferential direction of the main body.

[0017] According to any of the foregoing embodiments of the first aspect of this application, the orthographic projection of the main body on the substrate is located within the orthographic projection of the light-emitting functional part on the substrate.

[0018] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes a second electrode layer, the second electrode layer includes a plurality of second electrodes, the second electrodes are located on the side of the light-emitting functional part away from the substrate, at least a portion of the second electrodes are in contact with the conductive material of the isolation structure, and / or, at least a portion of the leakage current transmission part is electrically connected to the second electrodes.

[0019] According to any of the foregoing embodiments of the first aspect of this application, at least a portion of the leakage current transmission portion is in contact with the second electrode.

[0020] According to any of the foregoing embodiments of the first aspect of this application, the orthographic projection of the leakage current transmission portion on the substrate is located within the orthographic projection of the second electrode on the substrate, the orthographic projection of the light-emitting layer on the substrate is located within the orthographic projection of the leakage current transmission portion on the substrate, the area of ​​the orthographic projection of the leakage current transmission portion on the substrate is smaller than the area of ​​the orthographic projection of the second electrode on the substrate, and the area of ​​the orthographic projection of the light-emitting layer on the substrate is smaller than the area of ​​the orthographic projection of the leakage current transmission portion on the substrate.

[0021] According to any of the foregoing embodiments of the first aspect of this application, the partition structure includes a second sub-part and a first sub-part stacked sequentially in a direction away from the substrate, the orthographic projection of the second sub-part on the substrate is located within the orthographic projection of the first sub-part on the substrate, the orthographic projection area of ​​the second sub-part on the substrate is smaller than the orthographic projection area of ​​the first sub-part on the substrate, the second sub-part includes a conductive material, and at least a portion of the leakage current transmission part is in contact with the second sub-part.

[0022] According to any of the foregoing embodiments of the first aspect of this application, at least a portion of the first sub-parts is disposed with its orthographic projection on the substrate overlapping the orthographic projection of the leakage current transmission layer on the substrate.

[0023] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes a second electrode layer, the second electrode layer including a plurality of second electrodes, the second electrodes being located on the side of the light-emitting functional portion away from the substrate, and at least a portion of the second electrodes being in contact with the second sub-part.

[0024] According to any of the foregoing embodiments of the first aspect of this application, the partition structure further includes a third sub-part located on the side of the second sub-part facing the substrate, the third sub-part comprising a conductive material, and at least a portion of the leakage current transmission part being in contact with the third sub-part.

[0025] According to any of the foregoing embodiments of the first aspect of this application, the partition structure includes a third sub-part, a second sub-part, and a first sub-part stacked sequentially along a direction away from the substrate. The orthographic projection of the second sub-part on the substrate is located within the orthographic projection of the first sub-part on the substrate. The orthographic projection area of ​​the second sub-part on the substrate is smaller than the orthographic projection area of ​​the first sub-part on the substrate. The third sub-part includes a conductive material. At least a portion of the leakage current transmission part is in contact with the third sub-part. Alternatively, the third sub-part may be reused as a leakage current transmission part.

[0026] According to any of the foregoing embodiments of the first aspect of this application, at least a portion of the first sub-parts is disposed with its orthographic projection on the substrate overlapping the orthographic projection of the leakage current transmission layer on the substrate.

[0027] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes a second electrode layer, the second electrode layer including a plurality of second electrodes, the second electrodes being located on the side of the light-emitting functional portion away from the substrate, and at least a portion of the second electrodes being in contact with the third sub-part.

[0028] According to any of the foregoing embodiments of the first aspect of this application, at least a portion of the leakage current transmission section is multiplexed as the first electrode; the display panel further includes a plurality of pixel circuits, the pixel circuits being electrically connected to the first electrode.

[0029] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes a pixel definition layer, the pixel definition layer including a pixel defining portion and a pixel opening formed by the pixel definition portion, and at least a portion of the light-emitting functional portion is located in the pixel opening.

[0030] According to any of the foregoing embodiments of the first aspect of this application, a receiving groove is provided on the side of the pixel limiting portion away from the substrate, and at least a portion of the partition structure is provided in the receiving groove, or the partition structure is located on the side of the pixel limiting portion away from the substrate.

[0031] An embodiment of the second aspect of this application provides a display device, which includes a display panel of any of the above embodiments.

[0032] The third aspect of this application also provides a method for manufacturing a display panel, comprising: A partition structure and a leakage current transmission layer are formed on a substrate. The partition structure includes a conductive material, and the leakage current transmission layer includes a leakage current transmission portion. At least a portion of the leakage current transmission portion is electrically connected to the conductive material of the partition structure. A light-emitting functional layer is formed on the leakage current transmission layer. The light-emitting functional layer includes a plurality of light-emitting functional parts spaced apart. Each light-emitting functional part includes a light-emitting layer. At least a portion of the leakage current transmission parts and the light-emitting layer are stacked along the thickness direction of the substrate.

[0033] According to an embodiment of the third aspect of this application, the step of forming a leakage transport layer on a substrate includes: depositing a leakage material at a first deposition angle to form the leakage transport layer. The steps for forming a light-emitting functional layer on the leakage transport layer include: A light-emitting material is deposited on the leakage current transmission layer at a second evaporation angle to form a light-emitting layer.

[0034] According to any of the foregoing embodiments of the third aspect of this application, the first evaporation angle is smaller than the second evaporation angle, the orthographic projection of the light-emitting layer on the substrate is located within the orthographic projection of the leakage current transmission portion on the substrate, and the area of ​​the orthographic projection of the light-emitting layer on the substrate is smaller than the area of ​​the orthographic projection of the leakage current transmission portion on the substrate.

[0035] According to any of the foregoing embodiments of the third aspect of this application, the step of forming a light-emitting functional layer on the leakage current transmission layer includes: A second electrode material is deposited on the light-emitting functional layer at a third evaporation angle to form a second electrode layer. The second electrode layer includes a plurality of second electrodes, which are located on the side of the light-emitting functional part away from the substrate.

[0036] According to any of the foregoing embodiments of the third aspect of this application, the second electrode is in contact with the conductive material of the partition structure.

[0037] According to any of the foregoing embodiments of the third aspect of this application, the third evaporation angle is smaller than the first evaporation angle, the orthographic projection of the leakage current transmission portion on the substrate is located within the orthographic projection of the second electrode on the substrate, the area of ​​the orthographic projection of the leakage current transmission portion on the substrate is smaller than the area of ​​the orthographic projection of the second electrode on the substrate, and / or, the third evaporation angle is smaller than the second evaporation angle, the orthographic projection of the light-emitting layer on the substrate is located within the orthographic projection of the second electrode on the substrate, and the area of ​​the orthographic projection of the light-emitting layer on the substrate is smaller than the area of ​​the orthographic projection of the second electrode on the substrate.

[0038] According to any of the foregoing embodiments of the third aspect of this application, prior to the step of depositing the luminescent material onto the leakage current transport layer at a second deposition angle to form the luminescent layer, the method further includes: Hole injection material is deposited on the leakage current transmission layer at the fourth evaporation angle to form a hole injection layer.

[0039] According to any of the foregoing embodiments of the third aspect of this application, the fourth evaporation angle is greater than the first evaporation angle, the orthographic projection of the hole injection layer on the substrate is located within the orthographic projection of the leakage transmission portion on the substrate, and the area of ​​the orthographic projection of the hole injection layer on the substrate is smaller than the area of ​​the orthographic projection of the leakage transmission portion on the substrate. And / or, the fourth evaporation angle is greater than the second evaporation angle, the orthographic projection of the hole injection layer on the substrate is located within the orthographic projection of the light-emitting layer on the substrate, and the area of ​​the orthographic projection of the hole injection layer on the substrate is smaller than the area of ​​the orthographic projection of the light-emitting layer on the substrate.

[0040] In the display panel provided in this application embodiment, the display panel includes a substrate, a leakage transport layer, a light-emitting functional layer, and a partition structure. The light-emitting functional layer includes a plurality of light-emitting functional parts spaced apart, and the partition structure is disposed at least between adjacent light-emitting functional parts. Each light-emitting functional part includes a light-emitting layer, and the leakage transport layer includes leakage transport parts. At least a portion of the leakage transport parts and the light-emitting layer are stacked together along the thickness direction of the substrate. By providing at least a portion of the leakage transport parts connected to the conductive material of the partition structure, a portion of the driving current used to drive the light-emitting functional parts to emit light can be transmitted to the partition structure through the leakage transport parts and led outward. This allows for a larger driving current in the display panel to better maintain the light-emitting brightness of the light-emitting functional parts. Since a larger driving current is easier to control, the control capability of the driving current in the display panel can be better improved, which can better improve the uneven display problem of low-brightness, low-grayscale images in the display panel, and thus better improve the display effect of the display panel. Attached Figure Description

[0041] 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.

[0042] Figure 1 This is a partial cross-sectional view of a display panel provided in an embodiment of this application; Figure 2 This is a top view of a leakage current transmission section and a blocking structure provided in an embodiment of this application; Figure 3 This is a partial cross-sectional view of a display panel provided in another embodiment of this application; Figure 4 This is a top view of a leakage current transmission section and isolation structure provided in another embodiment of this application; Figure 5 This is a partial cross-sectional view of a display panel provided in another embodiment of this application; Figure 6 This is a partial cross-sectional view of a display panel provided in another embodiment of this application; Figure 7 This is a partial cross-sectional view of a display panel provided in another embodiment of this application; Figure 8 This is a partial cross-sectional view of a display panel provided in another embodiment of this application; Figure 9 This is a partial cross-sectional view of a display panel provided in another embodiment of this application; Figure 10 This is a partial cross-sectional view of a display panel provided in another embodiment of this application; Figure 11 This is a partial cross-sectional view of a display panel provided in another embodiment of this application; Figure 12 This is a schematic flowchart of a method for manufacturing a display panel provided in an embodiment of this application; Figure 13 This is a partial cross-sectional view of a display panel provided in another embodiment of this application; Figures 14 to 16 yes Figure 13 A partial structural diagram.

[0043] Explanation of reference numerals in the attached figures: 10. Display panel; 100, Substrate; 110, Substrate; 120, First insulating layer; 130, Second insulating layer; 140, Third insulating layer; 150, Driving circuit; 151, Transistor; 151a, Gate; 151b, Source / drain; 152, Storage capacitor; 152a, First electrode; 152b, Second electrode; 200, First electrode layer; 210, First electrode; 300, Pixel definition layer; 310, Pixel limiting part; 311, Receiving slot; 320, Pixel opening; 400. Partition structure; 410. First sub-section; 420. Second sub-section; 430. Third sub-section; 500, Light-emitting functional layer; 510, Light-emitting functional part; 511, Light-emitting layer; 512, Hole injection layer; 600, Second electrode layer; 610, Second electrode; 700. Leakage current transmission layer; 710. Leakage current transmission section; 711. Main body; 712. Connecting section; i. First vapor deposition angle; j. Second vapor deposition angle; k, third vapor deposition angle; h, fourth vapor deposition angle; X, thickness direction. Detailed Implementation

[0044] 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.

[0045] 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.

[0046] 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.

[0047] To better understand this application, various embodiments of the display panel, display device, and method for manufacturing the display panel will be described below with reference to the accompanying drawings.

[0048] Figure 1 This is a partial cross-sectional view of a display panel 10 provided in an embodiment of this application, wherein the X direction in the figure is the thickness direction X of the display panel 10.

[0049] like Figure 1 As shown, an embodiment of the first aspect of this application provides a display panel 10, including: a substrate 100, a leakage current transmission layer 700, a light-emitting functional layer 500, and a partition structure 400.

[0050] The leakage current transmission layer 700 is located on one side of the substrate 100. The leakage current transmission layer 700 includes a leakage current transmission section 710. Optionally, there can be multiple leakage current transmission sections 710, and the multiple leakage current transmission sections 710 can be arranged at intervals.

[0051] The light-emitting functional layer 500 includes a plurality of light-emitting functional parts 510 spaced apart. Each light-emitting functional part 510 includes a light-emitting layer 511. At least a portion of the leakage current transmission part 710 and the light-emitting layer 511 are stacked together along the thickness direction X of the substrate 100. For example, the leakage current transmission part 710 may be located on the side of the light-emitting layer 511 close to the substrate 100.

[0052] The partition structure 400 is disposed at least between adjacent light-emitting functional parts 510, and the partition structure 400 includes a conductive material; wherein at least a portion of the leakage current transmission part 710 is electrically connected to the conductive material of the partition structure 400.

[0053] In the display panel 10 provided in this application embodiment, the display panel 10 includes a substrate 100, a leakage current transmission layer 700, a light-emitting functional layer 500, and a partition structure 400. The light-emitting functional layer 500 includes a plurality of light-emitting functional parts 510 arranged at intervals, and the partition structure 400 is disposed at least between adjacent light-emitting functional parts 510. The light-emitting functional unit 510 includes a light-emitting layer 511, and the leakage current transmission layer 700 includes a leakage current transmission unit 710. At least a portion of the leakage current transmission unit 710 and the light-emitting layer 511 are stacked along the thickness direction X of the substrate 100. By providing at least a portion of the leakage current transmission unit 710 connected to the conductive material of the isolation structure 400, a portion of the driving current used to drive the light-emitting functional unit 510 to emit light can be transmitted to the isolation structure 400 through the leakage current transmission unit 710 and led outward. This allows a larger driving current to be provided in the display panel 10 to better maintain the light-emitting brightness of the light-emitting functional unit 510. Since a larger driving current is easier to control, the control capability of the driving current in the display panel 10 can be better improved, which can better improve the uneven display of low-brightness, low-grayscale images in the display panel 10, thereby improving the display effect of the display panel 10.

[0054] In some embodiments of this application, the display panel 10 further includes a pixel definition layer 300, which includes a pixel defining portion 310 and a pixel opening 320 formed by the pixel defining portion. At least a portion of the light-emitting functional portion 510 is located in the pixel opening 320. The pixel definition layer 300 can be used to divide the display panel 10 into sub-pixels.

[0055] Optionally, the pixel limiting portion 310 may be mesh-like, and the hollowed-out areas in the mesh-like pixel limiting portion 310 may be pixel openings 320, so that the pixel limiting portion 310 can be better used to divide the sub-pixels of the display panel 10.

[0056] Optionally, the partition structure 400 can also be mesh-like. The hollow areas in the mesh partition structure 400 can be set to correspond to the pixel openings 320, so that the partition structure 400 can also be used to participate in the division of sub-pixels of the display panel 10, and so that the partition structure 400 and the leakage current transmission part 710 can have a better connectable area, so that the partition structure 400 and the leakage current transmission part 710 can have better connection stability.

[0057] In some alternative embodiments, the light-emitting functional unit 510 may be provided with a leakage current transmission section 710 on the side opposite to the substrate 100, so that the current that needs to be transmitted to the light-emitting functional unit 510 to drive the light-emitting layer 511 to emit light can first pass through the leakage current transmission section 710, so that the leakage current transmission section 710 can leak part of the current to the isolation structure 400.

[0058] Figure 2This is a top view of a leakage current transmission unit 710 and a partition structure 400 provided in an embodiment of this application. Figure 3 This is a partial cross-sectional view of a display panel 10 provided in another embodiment of this application. Figure 4 This is a top view of a leakage current transmission section 710 and a partition structure 400 provided in another embodiment of this application.

[0059] In some alternative embodiments, the display panel 10 may further include a first electrode layer 200, which may include a plurality of first electrodes 210, the first electrodes 210 being located on the side of the light-emitting functional part 510 near the substrate 100.

[0060] Optional, such as Figure 1 and Figure 2 As shown, the leakage current transmission section 710 may be located on the side of the light-emitting layer 511 near the substrate 100, and the first electrode 210 may be located on the side of the leakage current transmission section 710 near the substrate 100, or, as... Figure 3 and Figure 4 As shown, at least a portion of the leakage current transmission section 710 can be reused as the first electrode 210.

[0061] In this optional embodiment, such as Figure 1 and Figure 2 As shown, when the first electrode 210 is located on the side of the leakage current transmission section 710 close to the substrate 100, the first electrode 210 can be disposed in the pixel opening 320, and the pixel limiting section 310 can be located between adjacent first electrodes 210, so that short circuit connection is less likely to occur between adjacent first electrodes 210, thereby improving the working reliability of the display panel 10.

[0062] Optionally, the first electrode 210 may be located on the side of the leakage current transmission portion 710 away from the substrate 100, and the first electrode 210 may be electrically connected to or in contact with the leakage current transmission portion 710. The leakage current transmission portion 710 may be electrically connected to the conductive material of the partition structure 400 through a through-hole penetrating the pixel defining portion 310. Alternatively, the leakage current transmission portion 710 may be integrally formed with at least a portion of the partition structure 400 (e.g., the third sub-part) in the same layer. Multiple structures in the same layer can be obtained by patterning the same film layer, thereby simplifying the process. Optionally, multiple first electrodes 210 may be spaced apart. The first electrode 210 may be an anode.

[0063] The first electrode 210 can provide current to the light-emitting functional unit 510 through the leakage current transmission section 710 to drive the light-emitting functional unit 510 to emit light. While the first electrode 210 provides current to the light-emitting functional unit 510 through the leakage current transmission section 710, part of the current can also be transmitted to the isolation structure 400 through the leakage current transmission section 710 and led outward. This allows a larger driving current to be provided in the display panel 10 to better maintain the light-emitting display brightness of the light-emitting functional unit 510, and can better improve the control capability of the driving current in the display panel 10. It can also better improve the uneven display problem of low brightness and low grayscale images in the display panel 10.

[0064] Since the first electrode 210 needs to have good conductivity to effectively transfer current and drive the light-emitting functional part 510 to emit light, the material selection for the leakage current transmission part 710, located on the side of the first electrode 210 facing away from the substrate 100, can be more flexible. For example, the material of the leakage current transmission part 710 may include a conductive material that primarily serves a conductive function. In this embodiment, such as... Figure 2 As shown, the leakage current transmission section 710 can have a large electrical connection area with the conductive material of the partition structure 400 surrounding the pixel opening 320, thereby improving the reliability of the electrical connection between the leakage current transmission section 710 and the conductive material of the partition structure 400. This allows the leakage current magnitude to be better adjusted simply by adjusting the material and thickness area of ​​the leakage current transmission section 710, thus enabling better control of the driving current in the display panel 10. Optionally, the conductivity of the leakage current transmission section 710 is less than or equal to the conductivity of the first electrode 210. Optionally, along the thickness direction of the substrate, the thickness of the leakage current transmission section 710 is less than or equal to the thickness of the first electrode 210. Optionally, the shape of the leakage current transmission section 710 can be the same as or similar to the shape of the light-emitting layer 511.

[0065] like Figure 3 and Figure 4 As shown, when the leakage current transmission section 710 is reused as the first electrode 210, the leakage current transmission section 710 can directly provide current to the light-emitting function section 510 to drive the light-emitting function section 510 to emit light. The leakage current transmission section 710 can also directly transmit part of the current to the isolation structure 400 and lead it outward, thereby improving the current extraction efficiency and enabling the provision of a larger driving current to better maintain the light-emitting display brightness of the light-emitting function section 510. This further enhances the control capability of the driving current in the display panel 10 and can better improve the uneven display problem of low brightness and low grayscale images in the display panel 10.

[0066] Optionally, the display panel 10 may not have a pixel definition layer 300 to facilitate the connection between the leakage current transmission section 710 and the isolation structure 400.

[0067] like Figure 2 and Figure 3 As shown, in some optional embodiments, when at least a portion of the leakage current transmission section 710 is reused as the first electrode 210, the leakage current transmission section 710 may include a main body 711 and a connecting segment 712, the connecting segment 712 being connected between the conductive material of the isolation structure 400 and the main body 711.

[0068] Optionally, the orthographic projection of the main body 711 on the substrate 100 is located within the orthographic projection of the light-emitting functional part 510 on the substrate 100. The main body 711 may be located at the light-emitting area of ​​a sub-pixel. The area of ​​the orthographic projection of the main body 711 on the substrate 100 may be less than or equal to the area of ​​the orthographic projection of the light-emitting functional part 510 on the substrate 100.

[0069] Optionally, the orthographic projection of the light-emitting functional part 510 on the substrate 100 is located within the orthographic projection of the main body 711 on the substrate 100. The area of ​​the orthographic projection of the main body 711 on the substrate 100 may be greater than or equal to the area of ​​the orthographic projection of the light-emitting functional part 510 on the substrate 100.

[0070] In this optional embodiment, the main body 711 can be block-shaped and have a larger size relative to the connecting segment 712. That is, the area of ​​the orthographic projection of the main body 711 on the substrate 100 is larger than the area of ​​the orthographic projection of the connecting segment on the substrate. This allows the main body 711 to receive the current transmitted from the substrate 100 and to provide current to the light-emitting functional unit 510 to drive the light-emitting functional unit 510 to emit light. The smaller connecting segment 712 can be mainly used to leak a smaller portion of the current in the leakage current transmission unit 710 to the isolation structure 400 for outward conduction. The smaller connecting segment 712 is less likely to transmit excessive current to the isolation structure 400, thereby improving the display reliability of the display panel 10. The specific value of the outward current can be adjusted by reasonably adjusting the arrangement shape, width, and arrangement area of ​​the connecting segment 712.

[0071] Optionally, there can be multiple connecting segments 712. The connecting segments 712 can extend from the main body 711 to the partition structure 400 and are spaced apart in the circumferential direction of the main body, so that the connecting segments 712 can be distributed more evenly on the periphery of the main body 711, so as to more evenly leak the current in the main body 711 to the partition structure 400, thereby improving the leakage uniformity of the leakage current transmission section 710.

[0072] In some optional embodiments, the display panel 10 further includes a second electrode layer 600, which may include a plurality of second electrodes 610 located on the side of the light-emitting functional portion 510 away from the substrate 100. The second electrodes 610 may be cathodes.

[0073] Optionally, at least a portion of the second electrode 610 may be in contact with the conductive material of the isolation structure 400, and / or at least a portion of the leakage current transmission part 710 may be electrically connected to the second electrode 610, so that the leakage current transmission part 710 directly transmits a small portion of the current to the second electrode 610, or transmits it to the second electrode 610 through the isolation structure 400, thereby improving the current extraction efficiency and enabling the provision of a larger driving current to better maintain the light-emitting display brightness of the light-emitting functional part 510, thereby further improving the control capability of the driving current in the display panel 10 and better improving the uneven display problem of low brightness and low grayscale images in the display panel 10.

[0074] Optionally, at least some of the second electrodes 610 above the adjacent pixel openings 320 can be interconnected through the partition structure 400, for example, forming a surface electrode or multiple large area electrode blocks, which facilitates the control of the second electrodes 610 in the display panel 10 and can better reduce the resistance of the display panel 10.

[0075] Optionally, the light-emitting functional unit 510 may further include at least one of a hole injection layer 512 (HIL), a hole transport layer (HTL), an electron blocking layer, a hole blocking layer, an electron injection layer (EIL), and an electron transport layer (ETL). For example, in the direction away from the substrate 100, the light-emitting functional unit 510 may include a hole injection layer 512 (HIL), a hole transport layer (HTL), a light-emitting layer 511, an electron transport layer (ETL), and an electron injection layer (EIL) stacked sequentially. For example, in the direction away from the substrate 100, the light-emitting functional unit 510 may include a hole injection layer 512 (HIL), a hole transport layer (HTL), an electron blocking layer, a light-emitting layer 511, a hole blocking layer, an electron transport layer (ETL), and an electron injection layer (EIL) stacked sequentially.

[0076] Optionally, the leakage current transmission unit 710 may be located between any two of the hole injection layer 512 (HIL), hole transport layer (HTL), electron blocking layer, light-emitting layer 511, hole blocking layer, electron transport layer (ETL), and electron injection layer (EIL), for example, between any two adjacent layers.

[0077] Optionally, the hole injection layer 512 may be located between the light-emitting layer 511 and the leakage current transmission section 710, so that the current that needs to be transmitted to the light-emitting functional section 510 to drive the light-emitting functional section 510 to emit light can first pass through the leakage current transmission section 710, so that the leakage current transmission section 710 can leak part of the current to the isolation structure 400.

[0078] Optionally, the first electrode layer 200 and the second electrode layer 600 can serve as pixel electrode layers of the display panel 10, and one of the first electrode 210 and the second electrode 610 can serve as an anode and the other as a cathode to drive the light-emitting functional unit 510 to emit light. In this embodiment, the first electrode 210 is used as the anode of the display panel 10 and the second electrode 610 is used as the cathode of the display panel 10 for illustrative purposes.

[0079] In some alternative embodiments, the isolation structure 400 may be connected to the negative power supply voltage signal line of the display panel 10, wherein the negative power supply voltage signal line may be used to transmit a negative power supply voltage signal (e.g., an ELVSS signal) to the second electrode 610 through the isolation structure 400, so that the second electrode 610 can participate in driving the light emission of the light-emitting functional unit 510, and also facilitate the outward lead-out of a portion of the driving current used to drive the light emission display of the light-emitting functional unit 510 through the negative power supply voltage signal line.

[0080] Optionally, the substrate 100 can be disposed in various ways. For example, the substrate 100 may include a substrate 110, or the substrate 100 may include a substrate 110 and a driving circuit 150 disposed on the substrate 110. The driving circuit 150 may include multiple pixel circuits. Optionally, the pixel circuits may be electrically connected to the first electrode 210 to provide current to the first electrode 210 for driving the light-emitting functional part 510 to emit light.

[0081] Optionally, the substrate 100 includes a first insulating layer 120, a second insulating layer 130, and a third insulating layer 140 stacked together. Exemplarily, the driving circuit 150 may include a transistor 151, a storage capacitor 152, and driving signal lines for connecting the various devices. The transistor 151 includes a semiconductor, a gate 151a, and a source / drain electrode 151b. The storage capacitor 152 includes a first electrode 152a and a second electrode 152b. As an example, the gate 151a and the first electrode 152a may be located on the side of the first insulating layer 120 facing the substrate 110, the second electrode 152b may be located between the first insulating layer 120 and the second insulating layer 130, and the source / drain electrode 151b may be located between the second insulating layer 130 and the third insulating layer 140. A gate insulating layer may be disposed between the semiconductor and the gate 151a.

[0082] Optionally, transistor 151 may include a control transistor and a drive transistor. The control transistor may be connected to the first electrode 210, or when the leakage current transmission section 710 is multiplexed as the first electrode 210, the control transistor may be connected to the leakage current transmission section 710. The drive transistor may be connected to the control transistor and used to transmit drive current to the first electrode 210 or the leakage current transmission section 710 through the control transistor to drive the light emission of the light-emitting function section 510. By connecting a portion of the leakage current transmission section 710 to the conductive material of the isolation structure 400, a portion of the driving current output by the driving transistor can be led out through the leakage current transmission section 710 and the isolation structure 400. This allows the brightness of the light-emitting function section 510 to be maintained by increasing the driving current output by the driving transistor. As the driving current output by the driving transistor increases, it becomes easier to control the driving transistor, thus improving the control capability of the driving transistor. This makes the driving current output by the driving transistor more stable, thereby improving the uneven display of low-brightness, low-grayscale images on the display panel 10 and ultimately enhancing the display effect of the display panel 10.

[0083] For ease of description, the following embodiments will be described using the example of the first electrode 210 being located on the side of the leakage current transmission section 710 close to the substrate 100.

[0084] In some embodiments of this application, there are various relative positional relationships between the partition structure 400 and the pixel limiting portion 310.

[0085] like Figure 1As shown, in some embodiments, the partition structure 400 may be located on the side of the pixel limiting portion 310 away from the substrate 100. A portion of the leakage current transmission portion 710 may be located within the pixel opening 320 to be electrically connected to the first electrode 210. A portion of the leakage current transmission portion 710 may extend out of the pixel opening 320 and be located on the side of the pixel limiting portion 310 away from the substrate 100, so as to facilitate the electrical connection between the leakage current transmission portion 710 and the conductive material of the partition structure 400.

[0086] Figure 5 This is a partial cross-sectional view of a display panel 10 provided in another embodiment of this application.

[0087] like Figure 5 As shown, in some embodiments, a receiving groove 311 may be provided on the side of the pixel limiting portion 310 away from the substrate 100, and at least part of the partition structure 400 may be provided in the receiving groove 311, so that the partition structure 400 is less likely to have an excessive height relative to the substrate 100, thereby effectively reducing the thickness of the display panel 10.

[0088] Optionally, a portion of the leakage current transmission section 710 may be located within the pixel opening 320 to be electrically connected to the first electrode 210. The portion of the leakage current transmission section 710 may extend from the pixel opening 320 to the side of the pixel limiting section 310 away from the substrate 100 and into the receiving groove 311 to realize the connection between the leakage current transmission section 710 and the conductive material of the isolation structure 400. Furthermore, by adjusting the size of the receiving groove 311, the connection area between the leakage current transmission section 710 and the conductive material of the isolation structure 400 can be adjusted to adjust the specific leakage amount of the drive current led outward, thereby enabling the adjustment of the specific output drive current of the drive transistor.

[0089] Figure 6 This is a partial cross-sectional view of a display panel 10 provided in another embodiment of this application. For example... Figure 6 As shown, in some optional embodiments, the partition structure 400 includes a second sub-part 420 and a first sub-part 410 stacked sequentially in a direction away from the substrate 100. The orthographic projection of the second sub-part 420 on the substrate 100 is located within the orthographic projection of the first sub-part 410 on the substrate 100, and the orthographic projection area of ​​the second sub-part 420 on the substrate 100 is smaller than the orthographic projection area of ​​the first sub-part 410 on the substrate 100.

[0090] This configuration allows the first sub-part 410 to block at least a portion of the material used to fabricate the light-emitting functional layer 500 and the leakage transport layer 700 during the vapor deposition of the display panel 10. This isolates the light-emitting functional layer 500 and the leakage transport layer 700 between adjacent sub-pixels and facilitates the formation of multiple spaced light-emitting functional parts 510 and leakage transport parts 710. By reasonably adjusting the size of the first sub-part 410, the connection area between the leakage transport part 710 and the conductive material of the isolation structure 400 can be adjusted, thereby adjusting the magnitude of the driving current output by the driving transistor and thus adjusting the control capability of the driving current in the display panel 10. Simultaneously, it eliminates the need for a high-precision mask during the vapor deposition of the light-emitting functional layer 500 and the leakage transport layer 700 of the display panel 10. For example, it eliminates the need for a high-precision fine metal mask (FMM) during the vapor deposition of the light-emitting functional layer 500 and the leakage transport layer 700, thereby reducing the manufacturing cost of the display panel 10.

[0091] Optionally, at least a portion of the first sub-part 410 is arranged to overlap with the orthographic projection of the leakage current transmission layer 700 on the substrate 100. This facilitates the connection between the leakage current transmission part 710 and the conductive material of the isolation structure 400. At the same time, the first sub-part 410 can also provide better shielding and isolation for the material of the leakage current transmission layer 700, making it less likely that the leakage current transmission part 710 will have an excessively large connection area with the isolation structure 400. This makes it less likely that excessive lateral leakage current will occur between adjacent light-emitting functional parts 510 through the leakage current transmission part 710 and the isolation structure 400, thereby improving the operational reliability of the display panel 10.

[0092] In the embodiments of this application, the partition structure 400 can be configured in various ways. The shape of the partition structure 400 can be any shape of material that can block and isolate the light-emitting functional layer 500.

[0093] like Figure 1 , Figure 3 and Figure 5 As shown, in some alternative embodiments, the distance between the two side surfaces of the partition structure 400 toward the pixel opening 320 gradually increases in the direction away from the substrate 100, so as to form a shape in which the orthographic projection of the second sub-part 420 on the substrate 100 is located within the orthographic projection of the first sub-part 410 on the substrate 100.

[0094] like Figure 6As shown, in some alternative embodiments, at least a portion of the first sub-part 410 may protrude from the second sub-part 420 toward the pixel opening 320 to improve the shielding effect of the first sub-part 410 on the materials of the light-emitting functional layer 500 and the leakage current transmission layer 700. This allows the connection area between the leakage current transmission part 710 and the isolation structure 400 to be adjusted by reasonably adjusting the extension size of the first sub-part 410, for example, by reasonably adjusting the degree of protrusion of the first sub-part 410 toward the pixel opening 320. This, in turn, allows the magnitude of the driving current output by the driving transistor to be adjusted, thereby adjusting the control capability of the driving current in the display panel 10.

[0095] Optionally, the second sub-part 420 includes a conductive material, and at least a portion of the leakage current transmission part 710 can contact the second sub-part 420, such that when the leakage current transmission part 710 contacts the second sub-part 420, a portion of the driving current used to drive the light-emitting function part 510 to emit light and display can be led out through the second sub-part 420.

[0096] Optionally, at least a portion of the leakage current transmission section 710 may contact the second electrode 610, and / or at least a portion of the second electrode 610 may contact the second sub-section 420, so that the leakage current transmission section 710 directly transmits a small portion of the current to the second electrode 610, or transmits it to the second electrode 610 through the isolation structure 400, thereby improving the current extraction efficiency and enabling the provision of a larger driving current to better maintain the light-emitting brightness of the light-emitting functional section 510, thereby further improving the control capability of the driving current in the display panel 10 and better improving the uneven display problem of low brightness and low grayscale images in the display panel 10.

[0097] Optionally, the second electrodes 610 above adjacent pixel openings 320 can be electrically connected to each other via the second sub-parts 420, for example, forming surface electrodes or multiple large-area electrode blocks.

[0098] Figure 7 This is a partial cross-sectional view of a display panel 10 provided in another embodiment of this application. Figure 8 This is a partial cross-sectional view of a display panel 10 provided in another embodiment of this application.

[0099] In some alternative embodiments, the partition structure 400 further includes a third sub-part 430, which may be located on the side of the second sub-part 420 facing the substrate 100. The third sub-part 430 may include a conductive material, such as... Figure 7 As shown, at least part of the leakage current transmission section 710 is in contact with the third subsection 430, or, as Figure 8 As shown, the third sub-section 430 is reused as a leakage current transmission section 710, so that the current in the leakage current transmission section 710 can be led out through the third sub-section 430. Figure 9This is a partial cross-sectional view of a display panel 10 provided in another embodiment of this application.

[0100] like Figure 9 As shown, optionally, the third sub-part 430 can be reused as the leakage current transmission part 710, and at least part of the leakage current transmission part 710 can also be reused as the first electrode 210, so as to better improve the manufacturing efficiency of the display panel 10 and better improve the efficiency of current being led out through the leakage current transmission part 710.

[0101] Optionally, at least a portion of the leakage current transmission section 710 may contact the third sub-section 430, and / or at least a portion of the second electrode may contact the third sub-section 430, so that the leakage current transmission section 710 directly transmits a small portion of the current to the second electrode 610, or transmits it to the second electrode 610 via the isolation structure 400. This can improve the current extraction efficiency, allowing for the provision of a larger driving current to better maintain the light-emitting brightness of the light-emitting functional section 510, thereby further improving the control capability of the driving current in the display panel 10 and effectively improving the uneven display problem of low-brightness, low-grayscale images in the display panel 10. Optionally, the second electrodes 610 above adjacent pixel openings 320 may be electrically connected to each other via the third sub-section 430, for example, forming surface electrodes or multiple large-area electrode blocks.

[0102] Optionally, the third sub-part 430 may be positioned to protrude from the second sub-part 420 toward the pixel opening 320.

[0103] By providing a third sub-part 430 protruding from the second sub-part 420 towards the pixel opening 320, the leakage current transmission part 710 can easily contact the conductive material of the isolation structure 400 when it comes into contact with the third sub-part 430. This facilitates adjustment of the connection area between the leakage current transmission part 710 and the conductive material of the isolation structure 400, thereby allowing for better adjustment of the driving current output by the driving transistor and ultimately improving the control capability of the driving current in the display panel 10. Furthermore, the third sub-part 430 protruding from the second sub-part 420 also facilitates contact between the second electrode 610 and the conductive material of the isolation structure 400, effectively increasing the connection area between them and thus reducing resistance.

[0104] like Figures 1 to 7 As shown, in some optional embodiments, at least a portion of the leakage current transmission section 710 may contact the conductive material of the isolation structure 400 to achieve electrical connection between the leakage current transmission section 710 and the conductive material of the isolation structure 400.

[0105] Optionally, at least a portion of the leakage current transmission section 710 may contact the second electrode 610. By allowing at least a portion of the leakage current transmission section 710 to contact the second electrode 610, the leakage current transmission section 710 can also draw current outward through the second electrode 610, thereby enabling the leakage current transmission section 710 to have a larger area for drawing current outward. This further facilitates the adjustment of the specific output driving current of the driving transistor, and further enables the adjustment of the control capability of the driving current in the display panel 10.

[0106] Optionally, the orthographic projection of the light-emitting layer 511 on the substrate 100 is located within the orthographic projection of the leakage current transmission section 710 on the substrate 100. The area of ​​the orthographic projection of the light-emitting layer 511 on the substrate 100 is smaller than the area of ​​the orthographic projection of the leakage current transmission section 710 on the substrate 100, so that the leakage current transmission section 710 can have a larger extension dimension to facilitate contact between the leakage current transmission section 710 and the conductive material of the isolation structure 400, and / or to facilitate contact between the leakage current transmission section 710 and the second electrode 610.

[0107] Figure 10 This is a partial cross-sectional view of a display panel 10 provided in another embodiment of this application.

[0108] like Figure 10 As shown, optionally, the orthographic projection of the hole injection layer 512 on the substrate 100 is located within the orthographic projection of the leakage current transmission section 710 on the substrate 100. The area of ​​the orthographic projection of the hole injection layer 512 on the substrate 100 is smaller than the area of ​​the orthographic projection of the leakage current transmission section 710 on the substrate 100, so that the leakage current transmission section 710 can have a larger extension dimension to facilitate contact between the leakage current transmission section 710 and the conductive material of the isolation structure 400, and / or to facilitate contact between the leakage current transmission section 710 and the second electrode 610.

[0109] Optionally, the orthographic projection of the leakage current transmission section 710 on the substrate 100 is located within the orthographic projection of the second electrode 610 on the substrate 100, and the orthographic projection of the light-emitting layer 511 on the substrate 100 is located within the orthographic projection of the leakage current transmission section 710 on the substrate 100. The area of ​​the orthographic projection of the leakage current transmission section 710 on the substrate 100 is smaller than the area of ​​the orthographic projection of the second electrode 610 on the substrate 100, and the area of ​​the orthographic projection of the light-emitting layer 511 on the substrate 100 is smaller than the area of ​​the orthographic projection of the leakage current transmission section 710 on the substrate 100. This allows the second electrode 610 to have a larger extension dimension to facilitate contact with the leakage current transmission section 710, and also facilitates contact between the second electrode 610 and the conductive material of the isolation structure 400. This can better reduce the connection resistance, thereby facilitating the second electrode 610 to receive negative power supply voltage signals.

[0110] Figure 11This is a partial cross-sectional view of a display panel 10 provided in another embodiment of this application. Optionally, at least a portion of the leakage current transmission section 710 is in contact with the third sub-section 430, and / or at least a portion of the second electrode may be in contact with the third sub-section 430. The leakage current transmission section 710 and the second sub-section 420 are spaced apart and do not contact each other, and / or the second electrode may be spaced apart and do not contact each other with the second sub-section 420.

[0111] Optionally, one of the third sub-part 430 and the second sub-part 420 may be a conductive material, and the other may be an insulating material. Optionally, both the third sub-part 430 and the second sub-part 420 may be conductive materials.

[0112] Figure 7 and Figure 10 In this embodiment, one of the third sub-part 430 and the second sub-part 420 is a conductive material and the other is an insulating material; alternatively, both the third sub-part 430 and the second sub-part 420 may be conductive materials. Figure 11 In the middle, at least the third sub-part 430 is made of conductive material.

[0113] Optionally, the first sub-part 410 may be made of a conductive material.

[0114] Optionally, the display panel may also include a first encapsulation layer disposed on the side of the second electrode layer facing away from the substrate.

[0115] Optionally, the first encapsulation layer covers the second electrode layer and the isolation structure.

[0116] Optionally, the first encapsulation layer includes a plurality of first encapsulation portions spaced apart, each of which corresponds to a light-emitting functional portion, and the first encapsulation portion encapsulates the corresponding light-emitting functional portion and the second electrode.

[0117] Optionally, the display panel further includes a second encapsulation layer located on the side of the first encapsulation layer away from the substrate. The second encapsulation layer covers the first encapsulation layer.

[0118] Optionally, the display panel further includes a third encapsulation layer disposed on the side of the second encapsulation layer opposite to the substrate.

[0119] Optionally, the first and third encapsulation layers are inorganic encapsulation layers, and the second encapsulation layer is an organic encapsulation layer.

[0120] Optionally, the display panel may also include a protective layer disposed on the side of the third encapsulation layer opposite to the substrate.

[0121] Optionally, the light-emitting functional part may include one or more colors, such as red, green and blue light-emitting functional parts.

[0122] The second aspect of this application also provides a display device, including the display panel 10 of any of the first aspect embodiments described above. Since the display device provided in the second aspect of this application includes the display panel 10 of any of the first aspect embodiments described above, it has the beneficial effects of the display panel 10 of any of the first aspect embodiments described above, which will not be elaborated further here.

[0123] 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.

[0124] Figure 12 This is a schematic flowchart of a method for manufacturing a display panel 10 according to an embodiment of this application. Figure 13 This is a partial cross-sectional view of a display panel 10 provided in another embodiment of this application.

[0125] like Figure 12 and combined Figures 1 to 11 As shown, an embodiment of the third aspect of this application also provides a method for manufacturing a display panel 10. The display panel 10 can be any of the display panels 10 provided in the first aspect embodiment described above. The manufacturing method includes: Step S01: An isolation structure 400 and a leakage current transmission layer 700 are formed on the substrate 100. The isolation structure 400 includes a conductive material, and the leakage current transmission layer 700 includes a leakage current transmission portion 710. At least a portion of the leakage current transmission portion 710 is electrically connected to the conductive material of the isolation structure 400.

[0126] Step S02: A light-emitting functional layer 500 is formed on the leakage current transmission layer 700. The light-emitting functional layer 500 includes a plurality of light-emitting functional parts 510 spaced apart. Each light-emitting functional part 510 includes a light-emitting layer 511. At least a portion of the leakage current transmission part 710 and the light-emitting layer 511 are stacked along the thickness direction X of the substrate 100.

[0127] In some embodiments, a first electrode layer 200 and / or a pixel definition layer 300 may also be formed on the substrate 100. The pixel definition layer 300 includes a pixel defining portion 310 and a pixel opening 320 formed by the pixel defining portion. The first electrode layer 200 may include a plurality of first electrodes 210 exposed from the pixel opening 320.

[0128] In some embodiments, the partition structure 400 includes a second sub-part 420 and a first sub-part 410 stacked sequentially in a direction away from the substrate 100. The orthographic projection of the second sub-part 420 on the substrate 100 is located within the orthographic projection of the first sub-part 410 on the substrate 100, and the orthographic projection area of ​​the second sub-part 420 on the substrate 100 is smaller than the orthographic projection area of ​​the first sub-part 410 on the substrate 100.

[0129] In these optional embodiments, by setting the orthographic projection of the second sub-part 420 on the substrate 100 to be within the orthographic projection of the first sub-part 410 on the substrate 100, and the orthographic projection area of ​​the second sub-part 420 on the substrate 100 to be smaller than the orthographic projection area of ​​the first sub-part 410 on the substrate 100, the first sub-part 410 can block at least part of the material used to prepare the leakage transport layer 700 and the light-emitting functional layer 500 when the leakage transport layer 700 and the light-emitting functional layer 500 of the display panel 10 are subsequently deposited, so as to isolate the leakage transport layer 700 and the light-emitting functional layer 500 between adjacent sub-pixels, and facilitate the formation of multiple spaced leakage transport parts 710 and light-emitting functional parts 510. The connection area between the leakage transport part 710 and the light-emitting functional part 510 and the isolation structure 400 can be adjusted by reasonably adjusting the size of the second sub-part 420, thereby adjusting the magnitude of the driving current output by the driving transistor, and thus adjusting the control capability of the driving current in the display panel 10.

[0130] In some optional embodiments, step S01 may further include: Figure 13 As shown, leakage material is deposited at the first evaporation angle i to form a leakage transmission layer 700.

[0131] In some embodiments, when depositing leakage material, the minimum acute angle between the direction of movement of the leakage material and the surface of the substrate 100 facing the partition structure 400 is the first deposition angle i. By reasonably setting the first deposition angle i, the connection area between the leakage transmission section 710 and the partition structure 400 can be better adjusted, so as to adjust the specific leakage amount of the current supplied by the first electrode 210 to the leakage transmission section 710 through the partition structure 400, thereby adjusting the specific output driving current of the driving transistor in the display panel 10, and thus adjusting the control capability of the driving current in the display panel 10.

[0132] In some optional embodiments, step S02 may further include: Figure 13 As shown, a light-emitting material is deposited on the leakage current transmission layer 700 at a second evaporation angle j to form a light-emitting layer 511.

[0133] In some embodiments, when evaporating the luminescent material, the minimum acute angle between the direction of movement of the luminescent material and the surface of the substrate 100 facing the partition structure 400 is the second evaporation angle j.

[0134] Optionally, the first vapor deposition angle i is smaller than the second vapor deposition angle j.

[0135] Optionally, by setting the first evaporation angle i to be smaller than the second evaporation angle j, the orthographic projection of the light-emitting layer 511 on the substrate 100 is located within the orthographic projection of the leakage current transmission section 710 on the substrate 100, and the area of ​​the orthographic projection of the light-emitting layer 511 on the substrate 100 is smaller than the area of ​​the orthographic projection of the leakage current transmission section 710 on the substrate 100, so that the leakage current transmission section 710 formed by evaporation can have a larger extension dimension, so as to facilitate electrical connection with the conductive material of the isolation structure 400.

[0136] In some alternative embodiments, step S02 may include: Step S03: As Figure 13 As shown, a second electrode material is deposited on the light-emitting functional layer 500 at a third deposition angle k to form a second electrode layer 600. The second electrode layer 600 includes a plurality of second electrodes 610, which are located on the side of the light-emitting functional part 510 away from the substrate 100.

[0137] In some embodiments, when depositing the second electrode material, the minimum acute angle between the movement direction of the second electrode material and the surface of the substrate 100 facing the partition structure 400 is the third deposition angle k.

[0138] Optionally, the third evaporation angle k is smaller than the first evaporation angle i.

[0139] Optionally, the orthographic projection of the leakage current transmission section 710 on the substrate 100 is located within the orthographic projection of the second electrode 610 on the substrate 100. The area of ​​the orthographic projection of the leakage current transmission section 710 on the substrate 100 is smaller than the area of ​​the orthographic projection of the second electrode 610 on the substrate 100, so that the second electrode 610 can have a larger extension dimension, so as to facilitate the contact between the second electrode 610 and the conductive material of the isolation structure 400, and / or, the contact between the second electrode 610 and the leakage current transmission section 710 can better reduce the connection resistance, thereby facilitating the second electrode 610 to receive negative power supply voltage signals.

[0140] Optionally, the third evaporation angle k is smaller than the second evaporation angle j.

[0141] Optionally, the orthographic projection of the light-emitting layer 511 on the substrate 100 lies within the orthographic projection of the leakage current transmission section 710 on the substrate 100, and the area of ​​the orthographic projection of the light-emitting layer 511 on the substrate 100 is smaller than the area of ​​the orthographic projection of the leakage current transmission section 710 on the substrate 100. When the orthographic projection of the light-emitting layer 511 on the substrate 100 lies within the orthographic projection of the leakage current transmission section 710 on the substrate 100, the second electrode 610 can have a larger extension dimension to facilitate contact with the leakage current transmission section 710, so that the leakage current transmission section 710 can also lead out current through the second electrode 610, so that the leakage current transmission section 710 can have a larger area for leading out current, thereby further facilitating the adjustment of the specific output driving current of the driving transistor, and further adjusting the control capability of the driving current in the display panel 10.

[0142] Optionally, step S02 may further include: depositing a hole injection material on the leakage current transmission layer 700 at a fourth deposition angle h to form a hole injection layer 512.

[0143] Optionally, before depositing the luminescent material on the leakage transport layer 700 at a second deposition angle j to form the luminescent layer 511, a hole injection material is deposited on the leakage transport layer 700 at a fourth deposition angle h to form the hole injection layer 512.

[0144] Optional, such as Figure 13 As shown, the fourth evaporation angle h is greater than the first evaporation angle i, the orthographic projection of the hole injection layer 512 on the substrate 100 is located within the orthographic projection of the leakage transmission section 710 on the substrate 100, and the area of ​​the orthographic projection of the hole injection layer 512 on the substrate 100 is smaller than the area of ​​the orthographic projection of the leakage transmission section 710 on the substrate 100; and / or, the fourth evaporation angle h is greater than the second evaporation angle j, the orthographic projection of the hole injection layer 512 on the substrate 100 is located within the orthographic projection of the light-emitting layer 511 on the substrate 100, and the area of ​​the orthographic projection of the hole injection layer 512 on the substrate 100 is smaller than the area of ​​the orthographic projection of the light-emitting layer 511 on the substrate 100.

[0145] Figures 14 to 16 yes Figure 13 A partial structural diagram is provided to clearly show each vapor deposition corner.

[0146] After depositing the second electrode material on the light-emitting functional layer 500 at a third evaporation angle k to form the second electrode layer 600, a first encapsulation layer is formed on the side of the second electrode layer away from the substrate.

[0147] Optionally, the leakage current transmission layer 700 is formed before, after, or during the formation of the partition structure 400. Optionally, the leakage current transmission layer 700 is formed after the formation of the partition structure 400, and the leakage current transmission layer 700 is isolated by the partition structure to form a corresponding leakage current transmission section.

[0148] Optionally, the luminous functional part may include multiple colors.

[0149] Optionally, for each color sub-pixel (e.g., red sub-pixel), a leakage transport layer 1, a first color light-emitting functional layer (e.g., the light-emitting functional layer corresponding to the red sub-pixel), a second electrode layer 1, and a first encapsulation layer 1 corresponding to the first color can be deposited sequentially over the entire surface. The leakage transport layer 1, the first color light-emitting functional layer, the second electrode layer 1, and the first encapsulation layer 1 are separated by a barrier structure. Afterward, the leakage transport layer 1, the first color light-emitting functional layer (e.g., the light-emitting functional layer corresponding to the red sub-pixel), the second electrode layer 1, and the first encapsulation layer 1 corresponding to the positions of other color sub-pixels (e.g., blue sub-pixels and green sub-pixels) can be etched, while retaining the leakage transport layer 1, the first color light-emitting functional layer (e.g., the light-emitting functional layer corresponding to the red sub-pixel), the second electrode layer 1, and the first encapsulation layer 1 corresponding to the position of the first color sub-pixel (e.g., red sub-pixel) to form the first color sub-pixel (e.g., red sub-pixel). Next, to change the color, for example, to a blue sub-pixel, the following layers are sequentially deposited: the second leakage transport layer, the second color light-emitting functional layer (e.g., the light-emitting functional layer corresponding to the blue sub-pixel), the second electrode layer, and the second encapsulation layer. These layers are separated by a partition structure. Then, the layers corresponding to the positions of other color sub-pixels (e.g., red and green sub-pixels) are etched, retaining the layers corresponding to the second color sub-pixel (e.g., blue sub-pixel). This process continues until all color sub-pixels are formed.

[0150] Subsequently, a second encapsulation layer and a third encapsulation layer can be formed sequentially on the side of the first encapsulation layer away from the substrate.

[0151] Optionally, after forming the leakage transmission section corresponding to each sub-pixel position, for each color sub-pixel (e.g., red sub-pixel), a first color light-emitting functional layer (e.g., the light-emitting functional layer corresponding to the red sub-pixel), a second electrode layer, and a first encapsulation layer can be deposited sequentially over the entire surface. The first color light-emitting functional layer, the second electrode layer, and the first encapsulation layer are separated by a partition structure. Then, the first color light-emitting functional layer (e.g., the light-emitting functional layer corresponding to the red sub-pixel), the second electrode layer, and the first encapsulation layer corresponding to the positions of other color sub-pixels (e.g., blue sub-pixels and green sub-pixels), can be etched, while retaining the first color light-emitting functional layer (e.g., the light-emitting functional layer corresponding to the red sub-pixel), the second electrode layer, and the first encapsulation layer to form the first color sub-pixel (e.g., red sub-pixel). Next, to change the color, for example, to the blue sub-pixel, the second color emissive layer (e.g., the emissive layer corresponding to the blue sub-pixel), the second electrode layer, and the second encapsulation layer can be deposited sequentially across the entire surface. The second color emissive layer, the second electrode layer, and the first encapsulation layer are separated by a partition structure. Then, the second color emissive layer (e.g., the emissive layer corresponding to the blue sub-pixel), the second electrode layer, and the first encapsulation layer corresponding to the positions of the other color sub-pixels (e.g., red sub-pixels, green sub-pixels), can be etched, while retaining the second color emissive layer (e.g., the emissive layer corresponding to the blue sub-pixel), the second electrode layer, and the first encapsulation layer, to form the second color sub-pixel (e.g., the blue sub-pixel). This process is repeated until sub-pixels of all colors are formed.

[0152] Optionally, the third sub-part 430 can be reused as at least a portion of the leakage current transmission part 710, which can reduce the number of times the leakage current transmission layer is formed and etched. The step of forming the isolation structure 400 on the substrate 100 includes: sequentially forming a third sub-part, a second sub-part, and a first sub-part on the substrate.

[0153] Optionally, before forming the partition structure, the method further includes forming a first electrode layer on the substrate.

[0154] Optionally, the step of forming the partition structure 400 on the substrate 100 includes: sequentially forming a second sub-part and a first sub-part on the substrate.

[0155] 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 leakage current transmission layer is located on one side of the substrate. The leakage current transmission layer includes a leakage current transmission section, which includes a main body and a connecting section. A light-emitting functional layer, the light-emitting functional layer comprising a plurality of light-emitting functional parts spaced apart, the light-emitting functional parts comprising a light-emitting layer, and at least a portion of the leakage current transmission part and the light-emitting layer being stacked together along the thickness direction of the substrate; A partition structure is provided at least between adjacent light-emitting functional parts, and the partition structure includes a conductive material; In this embodiment, at least a portion of the leakage current transmission part is electrically connected to the conductive material of the partition structure. There are multiple connecting segments, which extend from the main body to the partition structure and are spaced apart in the circumferential direction of the main body. The connecting segments connect the conductive material of the partition structure and the main body.

2. The display panel according to claim 1, characterized in that, The light-emitting functional part is disposed on the side of the leakage current transmission part away from the substrate.

3. The display panel according to claim 2, characterized in that, The light-emitting functional part further includes at least one of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer.

4. The display panel according to claim 2, characterized in that, The light-emitting functional part includes a hole injection layer located between the light-emitting layer and the leakage current transmission part.

5. The display panel according to claim 4, characterized in that, The orthographic projection of the hole injection layer on the substrate lies within the orthographic projection of the light-emitting layer on the substrate, and the area of ​​the orthographic projection of the hole injection layer on the substrate is smaller than the area of ​​the orthographic projection of the light-emitting layer on the substrate.

6. The display panel according to claim 2, characterized in that, At least a portion of the leakage current transmission section is in contact with the conductive material of the isolation structure.

7. The display panel according to claim 2, characterized in that, The orthographic projection of the light-emitting layer on the substrate is located within the orthographic projection of the leakage current transmission part on the substrate, and the area of ​​the orthographic projection of the light-emitting layer on the substrate is smaller than the area of ​​the orthographic projection of the leakage current transmission part on the substrate.

8. The display panel according to any one of claims 1 to 7, characterized in that, The display panel further includes a first electrode layer, which includes a plurality of first electrodes, and the first electrodes are located on the side of the light-emitting functional part closer to the substrate; The leakage current transmission section is located on the side of the light-emitting layer closer to the substrate, and the first electrode is located on the side of the leakage current transmission section closer to the substrate, or at least a portion of the leakage current transmission section is multiplexed as the first electrode.

9. The display panel according to claim 8, characterized in that, The display panel also includes multiple pixel circuits, which are electrically connected to the first electrode.

10. The display panel according to claim 8, characterized in that, The orthographic projection of the main body on the substrate is located within the orthographic projection of the light-emitting functional part on the substrate.

11. The display panel according to claim 1, characterized in that, The display panel further includes a second electrode layer, which includes a plurality of second electrodes. The second electrodes are located on the side of the light-emitting functional part away from the substrate. At least a portion of the second electrodes are in contact with the conductive material of the isolation structure, and / or at least a portion of the leakage current transmission part is electrically connected to the second electrodes.

12. The display panel according to claim 11, characterized in that, At least a portion of the leakage current transmission section is in contact with the second electrode.

13. The display panel according to claim 11, characterized in that, The orthographic projection of the leakage current transmission part on the substrate is located within the orthographic projection of the second electrode on the substrate, and the orthographic projection of the light-emitting layer on the substrate is located within the orthographic projection of the leakage current transmission part on the substrate. The area of ​​the orthographic projection of the leakage current transmission part on the substrate is smaller than the area of ​​the orthographic projection of the second electrode on the substrate, and the area of ​​the orthographic projection of the light-emitting layer on the substrate is smaller than the area of ​​the orthographic projection of the leakage current transmission part on the substrate.

14. The display panel according to any one of claims 1 to 7, characterized in that, The partition structure includes a second sub-part and a first sub-part stacked sequentially in a direction away from the substrate. The orthographic projection of the second sub-part on the substrate is located within the orthographic projection of the first sub-part on the substrate. The orthographic projection area of ​​the second sub-part on the substrate is smaller than the orthographic projection area of ​​the first sub-part on the substrate. The second sub-part includes a conductive material, and at least a portion of the leakage current transmission part is in contact with the second sub-part.

15. The display panel according to claim 14, characterized in that, At least a portion of the first sub-part's orthographic projection on the substrate overlaps with the orthographic projection of the leakage current transmission layer on the substrate.

16. The display panel according to claim 14, characterized in that, The display panel further includes a second electrode layer, which includes a plurality of second electrodes. The second electrodes are located on the side of the light-emitting functional part away from the substrate, and at least a portion of the second electrodes are in contact with the second sub-part.

17. The display panel according to claim 14, characterized in that, The partition structure further includes a third sub-part located on the side of the second sub-part facing the substrate. The third sub-part includes a conductive material, and at least a portion of the leakage current transmission part is in contact with the third sub-part.

18. The display panel according to any one of claims 1 to 7, characterized in that, The partition structure includes a third sub-part, a second sub-part, and a first sub-part stacked sequentially along a direction away from the substrate. The orthographic projection of the second sub-part on the substrate is located within the orthographic projection of the first sub-part on the substrate. The orthographic projection area of ​​the second sub-part on the substrate is smaller than the orthographic projection area of ​​the first sub-part on the substrate. The third sub-part includes a conductive material. At least a portion of the leakage current transmission part is in contact with the third sub-part. Alternatively, the third sub-part can be reused as the leakage current transmission part.

19. The display panel according to claim 18, characterized in that, At least a portion of the first sub-part's orthographic projection on the substrate overlaps with the orthographic projection of the leakage current transmission layer on the substrate.

20. The display panel according to claim 18, characterized in that, The display panel further includes a second electrode layer, which includes a plurality of second electrodes. The second electrodes are located on the side of the light-emitting functional part away from the substrate, and at least a portion of the second electrodes are in contact with the third sub-part.

21. The display panel according to claim 18, characterized in that, At least a portion of the leakage current transmission section is reused as the first electrode; the display panel further includes a plurality of pixel circuits, the pixel circuits being electrically connected to the first electrode.

22. The display panel according to claim 1, characterized in that, The display panel further includes a pixel definition layer, which includes a pixel defining portion and a pixel opening formed by the pixel defining portion, and at least a portion of the light-emitting functional portion is located in the pixel opening.

23. The display panel according to claim 22, characterized in that, The pixel defining portion has a receiving groove on the side away from the substrate, and at least part of the partition structure is disposed in the receiving groove, or the partition structure is located on the side of the pixel defining portion away from the substrate.

24. A display panel, characterized in that, include: substrate; A leakage current transmission layer is located on one side of the substrate, and the leakage current transmission layer includes a leakage current transmission section; A light-emitting functional layer, the light-emitting functional layer including a plurality of light-emitting functional parts spaced apart, the light-emitting functional parts being disposed on the side of the leakage current transmission part away from the substrate, the light-emitting functional part including a light-emitting layer and a hole injection layer, at least a portion of the leakage current transmission part and the light-emitting layer being stacked together along the thickness direction of the substrate, the hole injection layer being located between the light-emitting layer and the leakage current transmission part; A partition structure is provided at least between adjacent light-emitting functional parts, and the partition structure includes a conductive material; The display panel further includes multiple pixel circuits. At least a portion of the leakage current transmission section is electrically connected to the conductive material of the isolation structure. The leakage current transmission section is used to transfer a portion of the driving current transmitted from the pixel circuits to the light-emitting functional section to the isolation structure, so as to improve the uneven display of low-brightness, low-grayscale images on the display panel.

25. The display panel according to claim 24, characterized in that, The orthographic projection of the hole injection layer on the substrate lies within the orthographic projection of the light-emitting layer on the substrate, and the area of ​​the orthographic projection of the hole injection layer on the substrate is smaller than the area of ​​the orthographic projection of the light-emitting layer on the substrate.

26. The display panel according to claim 24, characterized in that, The orthographic projection of the light-emitting layer on the substrate is located within the orthographic projection of the leakage current transmission part on the substrate, and the area of ​​the orthographic projection of the light-emitting layer on the substrate is smaller than the area of ​​the orthographic projection of the leakage current transmission part on the substrate.

27. The display panel according to any one of claims 24 to 26, characterized in that, The light-emitting functional part further includes at least one of a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer located on the side of the hole injection layer opposite to the substrate. The display panel further includes a first electrode layer, which includes a plurality of first electrodes, and the first electrodes are located on the side of the light-emitting functional part closer to the substrate; The leakage current transmission section is located on the side of the light-emitting layer closer to the substrate, and the first electrode is located on the side of the leakage current transmission section closer to the substrate, or at least a portion of the leakage current transmission section is multiplexed as the first electrode.

28. The display panel according to any one of claims 24 to 26, characterized in that, The partition structure includes a second sub-part and a first sub-part stacked sequentially in a direction away from the substrate. The orthographic projection of the second sub-part on the substrate is located within the orthographic projection of the first sub-part on the substrate. The orthographic projection area of ​​the second sub-part on the substrate is smaller than the orthographic projection area of ​​the first sub-part on the substrate. The second sub-part includes a conductive material, and at least a portion of the leakage current transmission part is in contact with the second sub-part.

29. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 28.

30. A method for manufacturing a display panel, characterized in that, include: An isolation structure and a leakage current transmission layer are formed on a substrate. The isolation structure includes a conductive material, and the leakage current transmission layer includes a leakage current transmission portion. The leakage current transmission portion includes a main body and connecting segments. At least a portion of the leakage current transmission portion is electrically connected to the conductive material of the isolation structure. There are multiple connecting segments. The connecting segments extend from the main body to the isolation structure and are spaced apart in the circumferential direction of the main body. The connecting segments connect the conductive material of the isolation structure and the main body. A light-emitting functional layer is formed on the leakage current transmission layer. The light-emitting functional layer includes a plurality of light-emitting functional parts spaced apart. Each light-emitting functional part includes a light-emitting layer. At least a portion of the leakage current transmission parts and the light-emitting layer are stacked together along the thickness direction of the substrate.

31. The preparation method according to claim 30, characterized in that, The step of forming a leakage transport layer on a substrate includes: depositing a leakage material at a first deposition angle to form the leakage transport layer. The steps for forming a light-emitting functional layer on the leakage transport layer include: A light-emitting material is deposited on the leakage current transmission layer at a second evaporation angle to form a light-emitting layer.

32. The preparation method according to claim 31, characterized in that, The first evaporation angle is smaller than the second evaporation angle, the orthographic projection of the light-emitting layer on the substrate is located within the orthographic projection of the leakage current transmission part on the substrate, and the area of ​​the orthographic projection of the light-emitting layer on the substrate is smaller than the area of ​​the orthographic projection of the leakage current transmission part on the substrate.

33. The preparation method according to claim 31, characterized in that, After the step of forming the light-emitting functional layer on the leakage transport layer, the following is included: A second electrode material is deposited on the light-emitting functional layer at a third evaporation angle to form a second electrode layer. The second electrode layer includes a plurality of second electrodes, which are located on the side of the light-emitting functional part away from the substrate.

34. The preparation method according to claim 33, characterized in that, The second electrode is in contact with the conductive material of the partition structure.

35. The preparation method according to claim 33, characterized in that, The third evaporation angle is smaller than the first evaporation angle, the orthographic projection of the leakage current transmission portion on the substrate is located within the orthographic projection of the second electrode on the substrate, the area of ​​the orthographic projection of the leakage current transmission portion on the substrate is smaller than the area of ​​the orthographic projection of the second electrode on the substrate, and / or, the third evaporation angle is smaller than the second evaporation angle, the orthographic projection of the light-emitting layer on the substrate is located within the orthographic projection of the second electrode on the substrate, and the area of ​​the orthographic projection of the light-emitting layer on the substrate is smaller than the area of ​​the orthographic projection of the second electrode on the substrate.

36. The preparation method according to claim 31, characterized in that, Prior to the step of depositing the luminescent material onto the leakage current transport layer at a second deposition angle to form the luminescent layer, the following is also included: Hole injection material is deposited on the leakage current transmission layer at the fourth evaporation angle to form a hole injection layer.

37. The preparation method according to claim 36, characterized in that, The fourth evaporation angle is greater than the first evaporation angle, the orthographic projection of the hole injection layer on the substrate is located within the orthographic projection of the leakage current transmission part on the substrate, and the area of ​​the orthographic projection of the hole injection layer on the substrate is smaller than the area of ​​the orthographic projection of the leakage current transmission part on the substrate. And / or, the fourth evaporation angle is greater than the second evaporation angle, the orthographic projection of the hole injection layer on the substrate is located within the orthographic projection of the light-emitting layer on the substrate, and the area of ​​the orthographic projection of the hole injection layer on the substrate is smaller than the area of ​​the orthographic projection of the light-emitting layer on the substrate.

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