Display panel, display device and preparation method of display panel

Abstract

The invention discloses a display panel, a display device and a preparation method of the display panel. The display panel comprises a substrate, an isolation structure, a light-emitting layer and a first electrode layer. When the light-emitting layer is prepared, the light-emitting layer generates a large fall on the edge of the isolation structure and is difficult to connect, so that the light-emitting layer is broken, the light-emitting layer is broken to form the light-emitting units which are mutually disconnected and located in the isolation opening, a precise mask plate does not need to be adopted, development and use of the precise mask plate can be reduced, and the preparation cost is reduced. The first area is larger than or equal to the second area, that is, the first electrode has a larger lap joint area between the first end and the isolation structure, so that the lap joint effect of the first electrode on one side of the first end and the first electrode is improved, and the lap joint impedance and the power consumption of the display panel are reduced; the dark spot problem caused by poor lap joint of the first electrode and the isolation structure is solved, and the display effect and the use performance of the display panel are improved.

Description

Technical Field

[0001] This application relates to the field of displays, specifically 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 performance of OLED display products.

[0005] A first aspect of this application provides a display panel, comprising: a substrate; an isolation structure located on one side of the substrate, the isolation structure enclosing an isolation opening; a light-emitting layer located on one side of the substrate, the light-emitting layer including light-emitting units at least partially located in the isolation opening; and a first electrode layer located on the side of the light-emitting layer opposite to the substrate, the first electrode layer including a first electrode located within the isolation opening and electrically connected to the isolation structure, the first electrode having a first end and a second end disposed opposite to each other in a first direction, the contact area between the first end and the isolation structure being a first area, the contact area between the second end and the isolation structure being a second area, and the first area being greater than or equal to the second area.

[0006] According to an embodiment of the first aspect of this application, the orthographic projection of the second end onto the substrate is located within the orthographic projection of the light-emitting unit onto the substrate.

[0007] According to any of the foregoing embodiments of the first aspect of this application, the second end is spaced apart from the isolation structure.

[0008] According to any of the foregoing embodiments of the first aspect of this application, a portion of the light-emitting unit is located between the second end and the isolation structure.

[0009] According to any of the foregoing embodiments of the first aspect of this application, the distance between the first end and the substrate is a first distance, the distance between the second end and the substrate is a second distance, and the first distance is greater than or equal to the second distance.

[0010] According to any of the foregoing embodiments of the first aspect of this application, the first electrode further has a third end and a fourth end disposed opposite to each other in a second direction, the contact area between the third end and the isolation structure is a third area, the contact area between the fourth end and the isolation structure is a fourth area, the third area is greater than or equal to the fourth area, and the first direction and the second direction intersect.

[0011] According to any of the foregoing embodiments of the first aspect of this application, the first area corresponding to a portion of the first electrodes is greater than the second area, and the third area corresponding to another portion of the first electrodes is greater than the fourth area.

[0012] According to any of the foregoing embodiments of the first aspect of this application, the orthographic projection of the fourth end onto the substrate is located within the orthographic projection of the light-emitting unit onto the substrate.

[0013] According to any of the foregoing embodiments of the first aspect of this application, the fourth end is spaced apart from the isolation structure.

[0014] According to any of the foregoing embodiments of the first aspect of this application, a portion of the light-emitting unit is located between the fourth end and the isolation structure.

[0015] According to any of the foregoing embodiments of the first aspect of this application, the distance between the third end and the substrate is the third distance, the distance between the fourth end and the substrate is the fourth distance, and the third distance is greater than or equal to the fourth distance.

[0016] According to any of the foregoing embodiments of the first aspect of this application, the light-emitting unit has a fifth end and a sixth end disposed opposite to each other in a first direction, the contact area between the fifth end and the isolation structure is the fifth area, the contact area between the sixth end and the isolation structure is the sixth area, and the sixth area is greater than or equal to the fifth area.

[0017] According to any of the foregoing embodiments of the first aspect of this application, the first end and the sixth end are respectively disposed on opposite sides of the isolation opening in the first direction.

[0018] According to any of the foregoing embodiments of the first aspect of this application, the distance between the fifth end and the substrate is the fifth distance, the distance between the sixth end and the substrate is the sixth distance, and the sixth distance is greater than or equal to the fifth distance.

[0019] According to any of the foregoing embodiments of the first aspect of this application, the orthographic projection of the fifth end onto the substrate is located within the orthographic projection of the first electrode onto the substrate.

[0020] According to any of the foregoing embodiments of the first aspect of this application, the fifth end is spaced apart from the isolation structure.

[0021] According to any of the foregoing embodiments of the first aspect of this application, a portion of the first electrode is located between the fifth end and the isolation structure.

[0022] According to any of the foregoing embodiments of the first aspect of this application, the light-emitting unit has a seventh end and an eighth end disposed opposite to each other in a second direction, the contact area between the seventh end and the isolation structure is the seventh area, the contact area between the eighth end and the isolation structure is the eighth area, and the eighth area is greater than or equal to the seventh area.

[0023] According to any of the foregoing embodiments of the first aspect of this application, the sixth area corresponding to some light-emitting units is greater than the fifth area, and the eighth area corresponding to another part of the light-emitting units is greater than the seventh area.

[0024] According to any of the foregoing embodiments of the first aspect of this application, the distance between the seventh end and the substrate is the seventh distance, the distance between the eighth end and the substrate is the eighth distance, and the eighth distance is greater than or equal to the seventh distance.

[0025] According to any of the foregoing embodiments of the first aspect of this application, the isolation opening includes alternating first and second sides at the orthographic projection edge of the substrate. The two first sides are arranged opposite to each other in a first direction, and the two second sides are arranged opposite to each other in a second direction. Alternatively, the two first sides are arranged opposite to each other in a second direction, and the two second sides are arranged opposite to each other in a first direction. The size of the first side is greater than or equal to the size of the second side.

[0026] According to any of the foregoing embodiments of the first aspect of this application, the two first sides of a partial isolation opening are disposed opposite to each other in a first direction, and the two first sides of another partial isolation opening are disposed opposite to each other in a second direction.

[0027] According to any of the foregoing embodiments of the first aspect of this application, at least one of the first ends of two adjacent first electrodes is in contact with the portion of the isolation structure located between the two adjacent first electrodes.

[0028] According to any of the foregoing embodiments of the first aspect of this application, the first ends of two adjacent first electrodes are in contact with the portion of the isolation structure located between the two adjacent first electrodes.

[0029] According to any of the foregoing embodiments of the first aspect of this application, the isolation structure includes a first segment and a second segment disposed opposite to each other in a first direction, wherein one of the first ends of two adjacent first electrodes is in contact with the first segment and the other is in contact with the second segment.

[0030] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes: a pixel definition layer located on one side of the substrate, the pixel definition layer including a pixel defining portion and a pixel opening formed by the pixel defining portion, the pixel opening and the isolation opening being connected.

[0031] According to any of the foregoing embodiments of the first aspect of this application, the display panel further includes a second electrode located between the substrate and the light-emitting unit, with at least a portion of the second electrode exposed through a pixel opening.

[0032] According to any of the foregoing embodiments of the first aspect of this application, the first electrode includes a first portion and a second portion disposed at intervals in a first direction. The orthographic projections of the first portion and the second portion onto the substrate are respectively located within the orthographic projections of two adjacent pixel-defining portions onto the substrate. The orthographic projection area of ​​the first portion onto the substrate is greater than or equal to the orthographic projection area of ​​the second portion onto the substrate.

[0033] According to any of the foregoing embodiments of the first aspect of this application, the first end is located in the first portion and the second end is located in the second portion.

[0034] According to any of the foregoing embodiments of the first aspect of this application, the light-emitting unit includes a third portion and a fourth portion spaced apart in a first direction. The orthographic projections of the third portion and the fourth portion onto the substrate are respectively located within the orthographic projections of two adjacent pixel-defining portions onto the substrate. The orthographic projection area of ​​the fourth portion onto the substrate is greater than or equal to the orthographic projection area of ​​the third portion onto the substrate.

[0035] According to any of the foregoing embodiments of the first aspect of this application, the isolation structure includes a first layer and a second layer located on the side of the first layer away from the substrate, wherein the orthographic projection of the first layer onto the substrate is located within the orthographic projection of the second layer onto the substrate.

[0036] According to any of the foregoing embodiments of the first aspect of this application, the first layer includes a conductive material.

[0037] According to any of the foregoing embodiments of the first aspect of this application, the second layer includes a conductive material or an insulating material.

[0038] According to any of the foregoing embodiments of the first aspect of this application, both the first layer and the second layer comprise metallic materials, and the materials of the first layer and the second layer are different.

[0039] According to any of the foregoing embodiments of the first aspect of this application, the isolation structure further includes a third layer located on the side of the first layer facing the substrate, wherein the orthographic projection of the first layer on the substrate is located within the orthographic projection of the third layer on the substrate.

[0040] A second aspect of this application provides a display panel, comprising: a substrate; an isolation structure located on one side of the substrate, the isolation structure enclosing an isolation opening; a light-emitting layer located on one side of the substrate, the light-emitting layer including light-emitting units at least partially located in the isolation opening; and a first electrode layer located on the side of the light-emitting layer opposite to the substrate, the first electrode layer including a first electrode located within the isolation opening and electrically connected to the isolation structure, wherein the light-emitting unit has a fifth end and a sixth end disposed opposite to each other in a first direction, the contact area between the fifth end and the isolation structure is a fifth area, the contact area between the sixth end and the isolation structure is a sixth area, and the sixth area is greater than or equal to the fifth area.

[0041] According to an embodiment of the second aspect of this application, the isolation opening includes alternating first and second sides at the orthographic projection edge of the substrate. The two first sides are disposed opposite each other along a first direction, and the two second sides are disposed opposite each other along a second direction. The size of the first side is greater than or equal to the size of the second side, and the first and second directions intersect.

[0042] An embodiment of the third aspect of this application provides a display device that includes a display panel of any of the above embodiments.

[0043] An embodiment of the fourth aspect of this application provides a method for manufacturing a display panel, comprising:

[0044] An isolation structure is fabricated on a substrate, and the isolation structure encloses an isolation opening;

[0045] A light-emitting layer is prepared on a substrate, the light-emitting layer comprising light-emitting units at least partially located in an isolation opening;

[0046] A first electrode layer is prepared on the side of the light-emitting layer away from the substrate. The first electrode layer includes a first electrode located at the isolation opening. The first electrode has a first end and a second end disposed opposite to each other in a first direction. The contact area between the first end and the isolation structure is a first area, and the contact area between the second end and the isolation structure is a second area. The first area is greater than or equal to the second area.

[0047] According to an embodiment of this application, the display panel includes a substrate, an isolation structure, a light-emitting layer, and a first electrode layer. During the fabrication of the light-emitting layer, a significant drop occurs at the edge of the isolation structure, making connection difficult and resulting in breakage. The broken light-emitting layer forms mutually disconnected light-emitting units located within the isolation openings. This eliminates the need for a precision mask, reducing the development and use of precision masks and lowering manufacturing costs. The first area is greater than or equal to the second area, meaning the first electrode has a larger overlap area between its first end and the isolation structure. This improves the overlap effect between the first electrode and the isolation structure on one side of the first end, reducing overlap impedance and power consumption of the display panel. It also improves the dark spot problem caused by poor overlap between the first electrode and the isolation structure, enhancing the display effect and performance of the display panel. Attached Figure Description

[0048] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals denote the same or similar features, and the drawings are not drawn to scale.

[0049] Figure 1 This is a partial cross-sectional view of a display panel provided in an embodiment of this application;

[0050] Figure 2 This is a partial cross-sectional view of the display panel in another embodiment;

[0051] Figure 3 This is a partial cross-sectional view of the display panel in yet another embodiment;

[0052] Figure 4 This is a partial cross-sectional view of the display panel in another embodiment;

[0053] Figure 5 This is a partial cross-sectional view of the display panel in another embodiment;

[0054] Figure 6 This is a partial cross-sectional view of the display panel in another embodiment;

[0055] Figure 7 This is a partial cross-sectional view of the display panel in another embodiment;

[0056] Figure 8 This is a partial cross-sectional view of the display panel in another embodiment;

[0057] Figure 9 This is a partial cross-sectional view of the display panel in another embodiment;

[0058] Figure 10 This is a partial cross-sectional view of the display panel in another embodiment;

[0059] Figure 11 This is a partial cross-sectional view of the display panel in another embodiment;

[0060] Figure 12 This is a partial cross-sectional view of the display panel in another embodiment;

[0061] Figure 13 This is a partial top view of a display panel provided in an embodiment of this application;

[0062] Figure 14 This is a partial cross-sectional view of the display panel in another embodiment;

[0063] Figure 15 This is a partial cross-sectional view of the display panel in another embodiment;

[0064] Figure 16 This is a flowchart of a method for manufacturing a display panel provided in an embodiment of this application.

[0065] Explanation of reference numerals in the attached figures:

[0066] 10. Display panel;

[0067] 100. Substrate;

[0068] 200. Isolation structure; 210. First layer; 220. Second layer; 230. Third layer; 240. Isolation opening;

[0069] 300, Light-emitting layer; 310, Light-emitting unit; 311, Fifth end; 312, Sixth end; 313, Seventh end; 314, Eighth end; 320, First side; 330, Second side;

[0070] 400, First electrode layer; 410, First electrode; 411, First end; 412, Second end; 413, Third end; 414, Fourth end;

[0071] 500, Pixel definition layer; 510, Pixel limiting section; 511, First section; 512, Second section; 520, Pixel opening; 530, Second electrode;

[0072] H1, First distance; H2, Second distance; H3, Third distance; H4, Fourth distance; H5, Fifth distance; H6, Sixth distance; H7, Seventh distance; H8, Eighth distance;

[0073] X, the first direction; Y, the second direction. Detailed Implementation

[0074] 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.

[0075] 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 said element.

[0076] 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.

[0077] This application provides a display panel, a display device, and a method for manufacturing the display panel. The following description, in conjunction with the accompanying drawings, will illustrate various embodiments of the display panel, the display device, and the method for manufacturing the display panel.

[0078] This application provides a display panel, which may be an organic light-emitting diode (OLED) display panel.

[0079] Please refer to the following: Figure 1 and Figure 2 , 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 partial cross-sectional view of the display panel in another embodiment.

[0080] like Figure 1 and Figure 2 As shown, a first aspect embodiment of this application provides a display panel 10, which includes: a substrate 100; an isolation structure 200 located on one side of the substrate 100, the isolation structure 200 forming an isolation opening 240; a light-emitting layer 300 located on one side of the substrate 100, the light-emitting layer 300 including light-emitting units 310 at least partially located in the isolation opening 240; and a first electrode layer 400 located on the side of the light-emitting layer 300 away from the substrate 100, the first electrode layer 400 including a first electrode 410 located within the isolation opening 240 and electrically connected to the isolation structure 200, the first electrode 410 having a first end 411 and a second end 412 disposed opposite to each other in a first direction X, the contact area between the first end 411 and the isolation structure 200 being a first area, the contact area between the second end 412 and the isolation structure 200 being a second area, and the first area being greater than or equal to the second area.

[0081] The first end 411 and the second end 412 of the first electrode 410 refer to the endpoint or edge of the first electrode 410 that is closest to the isolation structure 200 in the first direction X.

[0082] According to an embodiment of this application, the display panel 10 includes a substrate 100, an isolation structure 200, a light-emitting layer 300, and a first electrode layer 400. When the light-emitting layer 300 is fabricated, a large drop occurs at the edge of the isolation structure 200, making it difficult to connect and causing breakage. The breakage of the light-emitting layer 300 forms mutually disconnected light-emitting units 310 located within the isolation opening 240. This eliminates the need for a precision mask, reducing the development and use of precision masks and lowering manufacturing costs. The first area is greater than or equal to the second area, meaning the first electrode 410 has a larger overlap area between its first end 411 and the isolation structure 200. This improves the overlap effect between the first electrode 410 and the isolation structure 200 on one side of its first end 411, reducing overlap impedance and power consumption of the display panel 10. This also improves the dark spot problem caused by poor overlap between the first electrode 410 and the isolation structure 200, thereby enhancing the display effect and performance of the display panel 10.

[0083] The isolation structure 200 separates the first electrode layer 400 to form mutually spaced first electrodes 410. The mutually spaced first electrodes 410 are electrically connected through the isolation structure 200 to form a full-surface electrode, ensuring the normal light emission of the light-emitting unit 310.

[0084] Specifically, when the second area is greater than 0, the second end 412 is in contact with the isolation structure 200; when the second area is 0, the second end 412 is not in contact with the isolation structure 200.

[0085] There are many other ways to arrange the substrate 100. For example, the substrate 100 may include a substrate and an array substrate disposed on the substrate. Alternatively, the substrate 100 may be the substrate itself. Or the substrate 100 may include a buffer layer and a support plate on the side facing away from the substrate.

[0086] The composition and preparation of the isolation structure 200 are detailed in patents CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN2024 / 099419, PCT / CN2024 / 099072, and C. Further descriptions are provided in N117979755A, CN117998900A, CN117062489A, CN117580403A, CN116583155A, CN116669477A, ​​CN117396039A, CN116669480A, CN116600606A, and CN117500332A for reference.

[0087] like Figure 1 and Figure 2As shown, in some optional embodiments, the orthographic projection of the second end 412 onto the substrate 100 is located within the orthographic projection of the light-emitting unit 310 onto the substrate 100.

[0088] In these optional embodiments, the second end 412 of the first electrode 410 is disposed on the light-emitting unit 310, such that the second end 412 of the first electrode 410 does not climb onto the isolation structure 200 and is disposed away from the isolation structure 200, so that the first electrode 410 as a whole is vapor-deposited towards the side biased towards the first end 411, thereby increasing the overlap area between the first end 411 of the first electrode 410 and the isolation structure 200, improving the overlap effect between the first electrode 410 and the isolation structure 200 on the side of the first end 411, so as to reduce the overlap impedance and the power consumption of the display panel 10.

[0089] Please see Figure 3 , Figure 3 This is a partial cross-sectional view of the display panel in yet another embodiment.

[0090] like Figure 3 As shown, optionally, the second end 412 is spaced apart from the isolation structure 200, increasing the distance between the second end 412 and the isolation structure 200, and the first electrode 410 is further biased towards one side of the first end 411 for vapor deposition, further increasing the overlap area between the first end 411 of the first electrode 410 and the isolation structure 200, improving the overlap effect between the first electrode 410 and the isolation structure 200 on one side of the first end 411, so as to reduce the overlap impedance and the power consumption of the display panel 10.

[0091] Optionally, the second end 412 of the first electrode 410 may contact the isolation structure 200, and the contact area between the second end 412 and the isolation structure 200 is smaller than the contact area between the first end 411 and the isolation structure 200.

[0092] Optionally, some of the light-emitting units 310 are located between the second end 412 and the isolation structure 200. The light-emitting units 310 separate the second end 412 and the isolation structure 200, further increasing the distance between the second end 412 and the isolation structure 200. The first electrode 410 is further offset towards one side of the first end 411 by vapor deposition, further increasing the overlap area between the first end 411 of the first electrode 410 and the isolation structure 200, and improving the overlap effect between the first electrode 410 and the isolation structure 200 on one side of the first end 411, so as to reduce the overlap impedance and the power consumption of the display panel 10.

[0093] like Figure 3As shown, in some optional embodiments, the distance between the first end 411 and the substrate 100 is a first distance H1, and the distance between the second end 412 and the substrate 100 is a second distance H2. The first distance H1 is greater than or equal to the second distance H2, and both the first distance H1 and the second distance H2 are distances along the thickness direction of the display panel 10.

[0094] In these optional embodiments, optionally, when the second end 412 contacts the isolation structure 200, the first distance H1 is greater than or equal to the second distance H2, and the ramp height of the first end 411 on the isolation structure 200 is greater than or equal to the ramp height of the second end 412 on the isolation structure 200. Optionally, when the second end 412 is spaced from the isolation structure 200, the ramp height of the first end 411 on the isolation structure 200 is greater than or equal to the distance between the second end 412 and the substrate 100. Therefore, the first distance H1 is greater than or equal to the second distance H2, making the contact area between the first end 411 and the isolation structure 200 greater than the contact area between the second end 412 and the isolation structure 200, increasing the overlap area between the first end 411 of the first electrode 410 and the isolation structure 200, and improving the overlap effect between the first electrode 410 and the isolation structure 200 on one side of the first end 411, thereby reducing the overlap impedance and the power consumption of the display panel 10.

[0095] Please see Figures 4 to 6 , Figure 4 This is a partial cross-sectional view of the display panel in another embodiment; Figure 5 This is a partial cross-sectional view of the display panel in another embodiment; Figure 6 This is a partial cross-sectional view of the display panel in another embodiment.

[0096] like Figures 4 to 6 As shown, in some optional embodiments, the first electrode 410 further has a third end 413 and a fourth end 414 disposed opposite to each other in the second direction Y. The contact area between the third end 413 and the isolation structure 200 is a third area, and the contact area between the fourth end 414 and the isolation structure 200 is a fourth area. The third area is greater than or equal to the fourth area, and the first direction X and the second direction Y intersect.

[0097] The third end 413 and the fourth end 414 of the first electrode 410 refer to the endpoints or edges of the first electrode 410 that are closest to the isolation structure 200 in the second direction Y.

[0098] In these optional embodiments, the third area is greater than or equal to the fourth area, that is, the first electrode 410 has a larger overlap area between the third end 413 and the isolation structure 200, thereby improving the overlap effect between the first electrode 410 and the isolation structure 200 on one side of the third end 413, reducing the overlap impedance and the power consumption of the display panel 10, improving the dark spot problem caused by poor overlap between the first electrode 410 and the isolation structure 200, and improving the display effect and performance of the display panel 10.

[0099] Specifically, when the fourth area is greater than 0, the fourth end 414 is in contact with the isolation structure 200; when the fourth area is 0, the fourth end 414 is not in contact with the isolation structure 200.

[0100] In some optional embodiments, the first area corresponding to a portion of the first electrode 410 is larger than the second area, and the third area corresponding to another portion of the first electrode 410 is larger than the fourth area.

[0101] In these optional embodiments, some of the first electrodes 410 have a larger overlap area between the first end 411 and the isolation structure 200, improving the overlap effect between the first electrode 410 and the first electrode 410 on one side of the first end 411. Another portion of the first electrodes 410 have a larger overlap area between the third end 413 and the isolation structure 200, improving the overlap effect between the first electrode 410 and the isolation structure 200 on one side of the third end 413. The overlap impedance of all the first electrodes 410 and the isolation structure 200 is reduced, improving the display effect of the display panel 10. For example, the light-emitting unit 310 includes a first light-emitting unit 310 and a second light-emitting unit 310 of different colors. The first area corresponding to the first electrode 410 on the side of the first light-emitting unit 310 away from the substrate 100 is larger than the second area, and the third area corresponding to the first electrode 410 on the side of the second light-emitting unit 310 away from the substrate 100 is larger than the fourth area; or, the first area corresponding to the first electrode 410 on the side of each light-emitting unit 310 away from the substrate 100 is larger than the second area; or, the third area corresponding to the first electrode 410 on the side of each light-emitting unit 310 away from the substrate 100 is larger than the fourth area; or, the first area corresponding to the first electrode 410 on the side of each light-emitting unit 310 away from the substrate 100 is larger than the second area, and the third area corresponding to the first electrode 410 on the side of each light-emitting unit 310 away from the substrate 100 is larger than the fourth area.

[0102] In some alternative embodiments, the orthographic projection of the fourth end 414 onto the substrate 100 is located within the orthographic projection of the light-emitting unit 310 onto the substrate 100.

[0103] In these optional embodiments, the fourth end 414 of the first electrode 410 is disposed on the light-emitting unit 310, such that the fourth end 414 of the first electrode 410 does not climb onto the isolation structure 200 and is disposed away from the isolation structure 200, so that the first electrode 410 as a whole is vapor-deposited towards the side biased towards the third end 413, thereby increasing the overlap area between the third end 413 of the first electrode 410 and the isolation structure 200, improving the overlap effect between the first electrode 410 and the isolation structure 200 on the side of the third end 413, so as to reduce the overlap impedance and the power consumption of the display panel 10.

[0104] Optionally, the fourth end 414 is spaced apart from the isolation structure 200, increasing the distance between the fourth end 414 and the isolation structure 200. The first electrode 410 is then deposited further biased toward the side of the third end 413, further increasing the overlap area between the third end 413 of the first electrode 410 and the isolation structure 200, and improving the overlap effect between the first electrode 410 and the isolation structure 200 on the side of the third end 413, so as to reduce the overlap impedance and the power consumption of the display panel 10.

[0105] Optionally, the fourth end 414 of the first electrode 410 may contact the isolation structure 200, and the contact area between the fourth end 414 and the isolation structure 200 is smaller than the contact area between the third end 413 and the isolation structure 200.

[0106] like Figure 5 As shown, optionally, some of the light-emitting units 310 are located between the fourth end 414 and the isolation structure 200. The light-emitting units 310 separate the fourth end 414 and the isolation structure 200, further increasing the distance between the fourth end 414 and the isolation structure 200. The first electrode 410 is further offset towards the side of the third end 413 for vapor deposition, further increasing the overlap area between the third end 413 of the first electrode 410 and the isolation structure 200, improving the overlap effect between the first electrode 410 and the isolation structure 200 on the side of the third end 413, so as to reduce the overlap impedance and the power consumption of the display panel 10.

[0107] like Figure 6 As shown, in some optional embodiments, the distance between the third end 413 and the substrate 100 is the third distance H3, and the distance between the fourth end 414 and the substrate 100 is the fourth distance H4. The third distance H3 is greater than or equal to the fourth distance H4, and both the third distance H3 and the fourth distance H4 are distances along the thickness direction of the display panel 10.

[0108] In these optional embodiments, optionally, when the fourth end 414 contacts the isolation structure 200, the third distance H3 is greater than or equal to the fourth distance H4, and the ramp height of the third end 413 on the isolation structure 200 is greater than or equal to the ramp height of the fourth end 414 on the isolation structure 200. Optionally, when the fourth end 414 is spaced from the isolation structure 200, the ramp height of the third end 413 on the isolation structure 200 is greater than or equal to the distance between the fourth end 414 and the substrate 100. Therefore, the third distance H3 is greater than or equal to the fourth distance H4, making the contact area between the third end 413 and the isolation structure 200 greater than the contact area between the fourth end 414 and the isolation structure 200, increasing the overlap area between the third end 413 of the first electrode 410 and the isolation structure 200, improving the overlap effect between the first electrode 410 and the isolation structure 200 on one side of the third end 413, thereby reducing the overlap impedance and the power consumption of the display panel 10.

[0109] Optionally, the first electrode 410 corresponding to each light-emitting unit 310 is deposited along the first direction X towards the first end 411; or, the first electrode 410 corresponding to each light-emitting unit 310 is deposited along the second direction Y towards the third end 413; or, the first electrode 410 corresponding to some light-emitting units 310 is deposited along the first direction X towards the first end 411, while the first electrode 410 corresponding to other light-emitting units 310 is deposited along the second direction Y towards the third end 413. Vapor deposition, for example, the first electrode 410 corresponding to the blue light-emitting unit 310 is vapor-deposited along the first direction X towards the first end 411, the first electrode 410 corresponding to the green light-emitting unit 310 is vapor-deposited along the second direction Y towards the third end 413, the first electrode 410 corresponding to the red light-emitting unit 310 is vapor-deposited along the second direction Y towards the third end 413, or the first electrode 410 corresponding to the red light-emitting unit 310 is vapor-deposited along the first direction X towards the first end 411.

[0110] Please see Figures 7 to 9 , Figure 7 This is a partial cross-sectional view of the display panel in another embodiment; Figure 8 This is a partial cross-sectional view of the display panel in another embodiment; Figure 9 This is a partial cross-sectional view of the display panel in another embodiment.

[0111] like Figures 7 to 9 As shown, in some optional embodiments, the light-emitting unit 310 has a fifth end 311 and a sixth end 312 disposed opposite to each other in the first direction X. The contact area between the fifth end 311 and the isolation structure 200 is the fifth area, and the contact area between the sixth end 312 and the isolation structure 200 is the sixth area. The sixth area is greater than or equal to the fifth area.

[0112] The fifth end 311 and the sixth end 312 of the light-emitting unit 310 refer to the end point or edge of the light-emitting unit 310 that is closest to the isolation structure 200 in the first direction X.

[0113] In these optional embodiments, the sixth area is greater than or equal to the fifth area, that is, the light-emitting unit 310 has a larger overlap area between the sixth end 312 and the isolation structure 200. The light-emitting unit 310 is further biased towards the side of the sixth end 312 for vapor deposition. When the first electrode 410 is subsequently fabricated, the overlap area between the first electrode 410 and the isolation structure 200 on the side of the sixth end 312 is reduced, and the overlap area between the first electrode 410 and the isolation structure 200 on the side of the fifth end 311 is increased. This improves the overlap effect between the first electrode 410 and the isolation structure 200 on the side of the fifth end 311, thereby reducing the overlap impedance and the power consumption of the display panel 10, improving the dark spot problem caused by poor overlap between the first electrode 410 and the isolation structure 200, and improving the display effect and performance of the display panel 10.

[0114] Optionally, the first end 411 and the sixth end 312 are respectively located on opposite sides of the isolation opening 240 in the first direction X. That is, the light-emitting unit 310 is further offset towards the side of the sixth end 312 during vapor deposition. When the first electrode 410 is subsequently fabricated, the overlap area between the first electrode 410 and the isolation structure 200 on the side of the second end 412 is reduced, and the overlap area between the first electrode 410 and the isolation structure 200 on the side of the first end 411 is increased. Optionally, the second end 412 and the fifth end 311 are respectively located on opposite sides of the isolation opening 240 in the first direction X. That is, the first end 411 of the first electrode 410 and the fifth end 311 of the light-emitting unit 310 are located on the same side of the isolation opening 240, and the second end 412 of the first electrode 410 and the sixth end 312 of the light-emitting unit 310 are located on the same side of the isolation opening 240.

[0115] like Figure 9 As shown, in some optional embodiments, the distance between the fifth end 311 and the substrate 100 is the fifth distance H5, and the distance between the sixth end 312 and the substrate 100 is the sixth distance H6. The sixth distance H6 is greater than or equal to the fifth distance H5. Both the fifth distance H5 and the sixth distance H6 are distances along the thickness direction of the display panel 10.

[0116] In these optional embodiments, optionally, when the fifth end 311 contacts the isolation structure 200, the sixth distance H6 is greater than or equal to the fifth distance H5, and the ramp height of the sixth end 312 on the isolation structure 200 is greater than or equal to the ramp height of the fifth end 311 on the isolation structure 200. Optionally, when the fifth end 311 is spaced from the isolation structure 200, the ramp height of the sixth end 312 on the isolation structure 200 is greater than or equal to the distance between the fifth end 311 and the substrate 100. The sixth distance H6 being greater than or equal to the fifth distance H5 increases the overlap area between the side of the first electrode 410 near the fifth end 311 and the isolation structure 200, improving the overlap effect of the first electrode 410 near the fifth end 311 and the isolation structure 200, thereby reducing the overlap impedance and the power consumption of the display panel 10.

[0117] Optionally, the orthographic projection of the fifth end 311 on the substrate 100 is located within the orthographic projection of the first electrode 410 on the substrate 100. The first electrode 410 covers the fifth end 311 of the light-emitting unit 310, thus avoiding the problem that the fifth end 311 of the light-emitting unit 310 is located between the first electrode 410 and the isolation structure 200, which would affect the connection between the first electrode 410 and the isolation structure 200 on the side closer to the fifth end 311.

[0118] like Figure 8 As shown, optionally, the fifth end 311 is spaced apart from the isolation structure 200. The fifth end 311 does not climb onto the isolation structure 200 and is set away from the isolation structure 200, so that the light-emitting unit 310 is deposited on the side biased towards the sixth end 312, which increases the overlap area between the first electrode 410 and the isolation structure 200 on the side near the fifth end 311, and improves the overlap effect between the first electrode 410 and the isolation structure 200 on the side near the fifth end 311.

[0119] Optionally, a portion of the first electrode 410 is located between the fifth end 311 and the isolation structure 200. The first electrode 410 separates the fifth end 311 of the light-emitting unit 310 from the isolation structure 200, further increasing the distance between the fifth end 311 and the isolation structure 200. The light-emitting unit 310 is deposited as a whole towards the sixth end 312, further increasing the overlap area between the first electrode 410 and the isolation structure 200 on the side near the fifth end 311, and improving the overlap effect between the first electrode 410 and the isolation structure 200 on the side near the fifth end 311.

[0120] like Figures 3 to 10 As shown, optionally, within the same isolation opening 240, the first distance H1 corresponding to the first electrode 410 is greater than the fifth distance H5 corresponding to the light-emitting unit 310.

[0121] Optionally, within the same isolation opening 240, the second distance H2 corresponding to the first electrode 410 is less than the sixth distance H6 corresponding to the light-emitting unit 310.

[0122] Optionally, the first end 411 of the first electrode 410 protrudes towards the isolation structure 200 relative to the fifth end 311 of the light-emitting unit 310, and the sixth end 312 of the light-emitting unit 310 protrudes towards the isolation structure 200 relative to the second end 412 of the first electrode 410. That is, within the same isolation opening 240, the first distance H1 corresponding to the first electrode 410 is greater than the fifth distance H5 corresponding to the light-emitting unit 310, and the second distance H2 corresponding to the first electrode 410 is less than the sixth distance H6 corresponding to the light-emitting unit 310.

[0123] Please see Figures 10 to 12 , Figure 10 This is a partial cross-sectional view of the display panel in another embodiment; Figure 11 This is a partial cross-sectional view of the display panel in another embodiment; Figure 12 This is a partial cross-sectional view of the display panel in another embodiment.

[0124] like Figures 10 to 12 As shown, in some optional embodiments, the light-emitting unit 310 has a seventh end 313 and an eighth end 314 disposed opposite to each other in the second direction Y. The contact area between the seventh end 313 and the isolation structure 200 is the seventh area, and the contact area between the eighth end 314 and the isolation structure 200 is the eighth area. The eighth area is greater than or equal to the seventh area.

[0125] The seventh end 313 and the eighth end 314 of the light-emitting unit 310 refer to the endpoints or edges of the light-emitting unit 310 that are closest to the isolation structure 200 in the second direction Y.

[0126] In these optional embodiments, the eighth area is greater than or equal to the seventh area, that is, the light-emitting unit 310 has a larger overlap area between the eighth end 314 and the isolation structure 200. The light-emitting unit 310 is further biased towards the side of the eighth end 314 for vapor deposition. When the first electrode 410 is subsequently fabricated, the overlap area between the first electrode 410 and the isolation structure 200 on the side of the eighth end 314 is reduced, and the overlap area between the first electrode 410 and the isolation structure 200 on the side of the seventh end 313 is increased. This improves the overlap effect between the first electrode 410 and the isolation structure 200 on the side of the seventh end 313, thereby reducing the overlap impedance and the power consumption of the display panel 10, improving the dark spot problem caused by poor overlap between the first electrode 410 and the isolation structure 200, and improving the display effect and performance of the display panel 10.

[0127] Optionally, the first end 411 of the first electrode 410 corresponding to some of the light-emitting units 310 protrudes towards the isolation structure 200 relative to the fifth end 311 of the light-emitting unit 310, and the sixth end 312 of the light-emitting unit 310 protrudes towards the isolation structure 200 relative to the second end 412 of the first electrode 410; the third end 413 of the first electrode 410 corresponding to another part of the light-emitting units 310 protrudes towards the isolation structure 200 relative to the seventh end 313 of the light-emitting unit 310, and the eighth end 314 of the light-emitting unit 310 protrudes towards the isolation structure 200 relative to the fourth end 414 of the first electrode 410.

[0128] In some optional embodiments, the sixth area corresponding to some light-emitting units 310 is larger than the fifth area, and the eighth area corresponding to another part of the light-emitting units 310 is larger than the seventh area.

[0129] In these optional embodiments, some light-emitting units 310 have a larger overlap area between the sixth end 312 and the isolation structure 200, improving the overlap effect of the first electrode 410 corresponding to some light-emitting units 310 with the isolation structure 200 on the side near the fifth end 311. Other light-emitting units 310 have a larger overlap area between the eighth end 314 and the isolation structure 200, improving the overlap effect of the first electrode 410 corresponding to some light-emitting units 310 with the isolation structure 200 on the side near the seventh end 313. For example, the sixth area corresponding to the first light-emitting unit 310 is larger than the fifth area, and the eighth area corresponding to the second light-emitting unit 310 is larger than the seventh area; or, the sixth area corresponding to each light-emitting unit 310 is larger than the fifth area; or, the eighth area corresponding to each light-emitting unit 310 is larger than the seventh area; or, the sixth area corresponding to each light-emitting unit 310 is larger than the fifth area, and the eighth area corresponding to each light-emitting unit 310 is larger than the seventh area.

[0130] like Figure 12 As shown, in some optional embodiments, the distance between the seventh end 313 and the substrate 100 is the seventh distance H7, and the distance between the eighth end 314 and the substrate 100 is the eighth distance H8. The eighth distance H8 is greater than or equal to the seventh distance H7. Both the seventh distance H7 and the eighth distance H8 are distances along the thickness direction of the display panel 10.

[0131] In these optional embodiments, optionally, when the seventh terminal 313 contacts the isolation structure 200, the eighth distance H8 is greater than or equal to the seventh distance H7, and the ramp height of the eighth terminal 314 on the isolation structure 200 is greater than or equal to the ramp height of the seventh terminal 313 on the isolation structure 200. Optionally, when the seventh terminal 313 is spaced from the isolation structure 200, the ramp height of the eighth terminal 314 on the isolation structure 200 is greater than or equal to the distance between the seventh terminal 313 and the substrate 100. The eighth distance H8 being greater than or equal to the seventh distance H7 increases the overlap area between the side of the first electrode 410 near the seventh terminal 313 and the isolation structure 200, improving the overlap effect of the first electrode 410 near the seventh terminal 313 and the isolation structure 200, thereby reducing the overlap impedance and the power consumption of the display panel 10.

[0132] like Figures 6 to 12 As shown, optionally, within the same isolation opening 240, the third distance H3 corresponding to the first electrode 410 is greater than the seventh distance H7 corresponding to the light-emitting unit 310.

[0133] Optionally, within the same isolation opening 240, the fourth distance H4 corresponding to the first electrode 410 is less than the eighth distance H8 corresponding to the light-emitting unit 310.

[0134] Optionally, the third end 413 of the first electrode 410 protrudes towards the isolation structure 200 relative to the seventh end 313 of the light-emitting unit 310, and the eighth end 314 of the light-emitting unit 310 protrudes towards the isolation structure 200 relative to the fourth end 414 of the first electrode 410. That is, within the same isolation opening 240, the third distance H3 corresponding to the first electrode 410 is greater than the seventh distance H7 corresponding to the light-emitting unit 310, and the fourth distance H4 corresponding to the first electrode 410 is less than the eighth distance H8 corresponding to the light-emitting unit 310.

[0135] Please see Figure 13 , Figure 13 This is a partial top view of a display panel provided in an embodiment of this application.

[0136] like Figure 13 As shown, in some optional embodiments, the isolation opening 240 includes alternating first sides 320 and second sides 330 on the orthographic projection edge of the substrate 100. The two first sides 320 are arranged opposite each other in the first direction X, and the two second sides 330 are arranged opposite each other in the second direction Y. Alternatively, the two first sides 320 are arranged opposite each other in the second direction Y, and the two second sides 330 are arranged opposite each other in the first direction X. The size of the first side 320 is greater than or equal to the size of the second side 330.

[0137] In these optional embodiments, when the two first sides 320 are arranged opposite each other in the first direction X, and the size of the first side 320 is larger than the size of the second side 330, the first end 411 and the second end 412 of the first electrode 410 are arranged in the same direction as the first side 320, so that the side of the first electrode 410 closer to the longer first side 320 in the first direction X has a larger contact area with the isolation structure 200, thereby improving the overlap effect between the first electrode 410 and the isolation structure 200 in the first direction X. When the two first sides 320 are arranged opposite each other in the second direction Y, and the size of the first side 320 is larger than the size of the second side 330, the third end 413 and the fourth end 414 of the first electrode 410 are arranged in the same direction as the first side 320, so that the side of the first electrode 410 closer to the longer first side 320 in the second direction Y has a larger contact area with the isolation structure 200, thereby improving the overlap effect between the first electrode 410 and the isolation structure 200 in the second direction Y.

[0138] In some alternative embodiments, the two first sides 320 of a partial isolation opening 240 are arranged opposite each other in the first direction X, and the two first sides 320 of another partial isolation opening 240 are arranged opposite each other in the second direction Y.

[0139] In these optional embodiments, a portion of the first electrode 410 has a larger contact area with the isolation structure 200 on the side closer to the longer first side 320 in the first direction X, thereby improving the overlap effect between the first electrode 410 and the isolation structure 200 in the first direction X. Another portion of the first electrode 410 has a larger contact area with the isolation structure 200 on the side closer to the longer first side 320 in the second direction Y, thereby improving the overlap effect between the first electrode 410 and the isolation structure 200 in the second direction Y.

[0140] In some optional embodiments, when the two first sides 320 of the isolation opening 240 are arranged opposite each other in the first direction X, the distance between the fifth end 311 of the light-emitting unit 310 located in the isolation opening 240 and the substrate 100 is less than or equal to the distance between the corresponding seventh end 313 and the substrate 100, and / or, the distance between the fifth end 313 of the light-emitting unit 310 and the substrate 100 is less than or equal to the distance between the corresponding eighth end 314 and the substrate 100, and / or, the distance between the sixth end 312 of the light-emitting unit 310 and the substrate 100 is less than or equal to the distance between the corresponding seventh end 313 and the substrate 100, and / or, the distance between the sixth end 312 of the light-emitting unit 310 and the substrate 100 is less than or equal to the distance between the corresponding eighth end 314 and the substrate 100. That is, the light-emitting unit 310 is deposited on the shorter second side 330, so that the height of the light-emitting unit 310 near the first side 320 is lower, which makes it easier for the first electrode 410 to overlap with the isolation structure 200 near the first side 320, thereby improving the overlap effect of the first electrode 410 with the isolation structure 200 near the first side 320.

[0141] In some optional embodiments, at least one of the first ends 411 of two adjacent first electrodes 410 is in contact with the portion of the isolation structure 200 located between the two adjacent first electrodes 410. For example, in some optional embodiments, the first ends 411 of two adjacent first electrodes 410 are both in contact with the portion of the isolation structure 200 located between the two adjacent first electrodes 410.

[0142] Please see Figure 14 , Figure 14 This is a partial cross-sectional view of the display panel in another embodiment.

[0143] like Figure 14 As shown, in these optional embodiments, among two adjacent first electrodes 410, one first electrode 410 contacts the isolation structure 200 at its first end 411, and the first end 411 of the other first electrode 410 also contacts the same part of the isolation structure 200. That is, the first ends 411 of the two first electrodes 410 respectively contact both sides of the same part of the isolation structure 200, meaning that the part of the isolation structure 200 and the first electrodes 410 on both sides have a large contact area.

[0144] Alternatively, in some optional embodiments, the isolation structure 200 includes a first segment and a second segment disposed opposite to each other in a first direction X, wherein one of the first ends 411 of two adjacent first electrodes 410 is in contact with the first segment and the other is in contact with the second segment.

[0145] In these optional embodiments, of two adjacent first electrodes 410, the first end 411 of one first electrode 410 contacts the first segment of the isolation structure 200, and the first end 411 of the other first electrode 410 contacts the second segment on the side away from the aforementioned first electrode 410. The first ends 411 of the two adjacent first electrodes 410 are in contact with the isolation structure 200 on the same side in the first direction X, and there is a large contact area between the two first electrodes 410 and the two segments of the isolation structure 200.

[0146] Optionally, the first ends 411 of two adjacent first electrodes 410 may contact the isolation structure 200 on the same side in the first direction X; or the first ends 411 of the first electrodes 410 corresponding to the same color light-emitting unit 310 may contact the isolation structure 200 on the same side in the first direction X; or the third ends 413 of two adjacent first electrodes 410 may contact the isolation structure 200 on the same side in the second direction Y; or the third ends 413 of the first electrodes 410 corresponding to the same color light-emitting unit 310 may contact the isolation structure 200 on the same side in the first direction X. The specific configuration can be adjusted according to actual conditions and is not limited here. Optionally, at least one of the third ends 413 of two adjacent first electrodes 410 may be in contact with the portion of the isolation structure 200 located between the two adjacent first electrodes 410. For example, in some optional embodiments, the third ends 413 of both adjacent first electrodes 410 may be in contact with the portion of the isolation structure 200 located between the two adjacent first electrodes 410.

[0147] Optionally, the isolation structure 200 includes a third segment and a fourth segment disposed opposite to each other in the second direction Y. One of the third ends 413 of two adjacent first electrodes 410 is in contact with the third segment, and the other is in contact with the fourth segment. The connection method between the first electrode 410 and the isolation structure 200 can also be a combination of the above embodiments.

[0148] In some optional embodiments, the display panel 10 further includes a pixel definition layer 500 located on one side of the substrate 100. The pixel definition layer 500 includes a pixel defining portion 510 and a pixel opening 520 formed by the pixel defining portion 510. The pixel opening 520 and the isolation opening 240 are connected.

[0149] In these optional embodiments, the pixel defining portion 510 of the pixel defining layer 500 encloses a pixel opening 520 to accommodate the light-emitting unit 310, thereby enabling the light-emitting unit 310 to emit light normally. Furthermore, the pixel defining portion 510 defines the area for each light-emitting unit 310, reducing color mixing issues between the light-emitting units 310.

[0150] In some alternative embodiments, the display panel 10 further includes a second electrode 530 located between the substrate 100 and the light-emitting unit 310, with at least a portion of the second electrode 530 exposed by the pixel opening 520.

[0151] In these alternative embodiments, one of the second electrode 530 and the first electrode 410 serves as the anode of the light-emitting unit 310, and the other serves as the cathode of the light-emitting unit 310. This application embodiment illustrates this by using the second electrode 530 as the anode of the light-emitting unit 310 and the first electrode 410 as the cathode of the light-emitting unit 310.

[0152] In some optional embodiments, the first electrode 410 includes a first portion 511 and a second portion 512 (not shown in the figure) spaced apart in the first direction X. The orthographic projections of the first portion 511 and the second portion 512 onto the substrate 100 are respectively located within the orthographic projections of two adjacent pixel limiting portions 510 onto the substrate 100. The orthographic projection area of ​​the first portion 511 onto the substrate 100 is greater than or equal to the orthographic projection area of ​​the second portion 512 onto the substrate 100.

[0153] In these optional embodiments, the first portion 511 and the second portion 512 are respectively disposed in two adjacent pixel defining portions 510 in the first direction X. The orthogonal projection area of ​​the first portion 511 on the substrate 100 is larger than the orthogonal projection area of ​​the second portion 512 on the substrate 100. That is, the first electrode 410 is deposited on the side biased towards the first portion 511, which further increases the overlap area of ​​the first electrode 410 with the isolation structure 200 on the side close to the first portion 511, and improves the overlap effect of the first electrode 410 with the isolation structure 200 on the side close to the first portion 511, so as to reduce the overlap impedance and the power consumption of the display panel 10.

[0154] Optionally, the first end 411 is located in the first portion 511, and the second end 412 is located in the second portion 512. That is, the first electrode 410 is further offset towards the side of the first end 411 for vapor deposition, which further increases the overlap area between the first end 411 of the first electrode 410 and the isolation structure 200, and improves the overlap effect between the first electrode 410 and the isolation structure 200 on the side of the first end 411, so as to reduce the overlap impedance and the power consumption of the display panel 10.

[0155] In some optional embodiments, the light-emitting unit 310 includes a third portion and a fourth portion spaced apart in the first direction X. The orthographic projections of the third portion and the fourth portion onto the substrate 100 are respectively located within the orthographic projections of two adjacent pixel limiting portions 510 onto the substrate 100. The orthographic projection area of ​​the fourth portion onto the substrate 100 is greater than or equal to the orthographic projection area of ​​the third portion onto the substrate 100.

[0156] In these optional embodiments, the third and fourth portions are disposed in two adjacent pixel defining portions 510 in the first direction X. The orthogonal projection area of ​​the fourth portion on the substrate 100 is greater than or equal to the orthogonal projection area of ​​the third portion on the substrate 100. That is, the light-emitting unit 310 is deposited on the side biased towards the fourth portion. When the first electrode 410 is subsequently fabricated, the overlap area between the first electrode 410 and the isolation structure 200 on the side near the fourth portion is reduced, and the overlap area between the first electrode 410 and the isolation structure 200 on the side near the third portion is increased. This improves the overlap effect between the first electrode 410 and the isolation structure 200 on the side near the third portion, thereby reducing the overlap impedance and the power consumption of the display panel 10, improving the dark spot problem caused by poor overlap between the first electrode 410 and the isolation structure 200, and improving the display effect and performance of the display panel 10.

[0157] In some alternative embodiments, the isolation structure 200 includes a first layer 210 and a second layer 220 located on the side of the first layer 210 opposite to the substrate 100, wherein the orthographic projection of the first layer 210 onto the substrate 100 is within the orthographic projection of the second layer 220 onto the substrate 100.

[0158] In these optional embodiments, the isolation structure 200 includes a first layer 210 and a second layer 220 located on the side of the first layer 210 away from the substrate 100. The first layer 210 and the second layer 220 are stacked to form the isolation structure 200. The first layer 210, which is disposed close to the substrate 100, has its orthographic projection on the substrate 100 located within the orthographic projection of the second layer 220 on the substrate 100. The area of ​​the second layer 220 is larger than the area of ​​the first layer 210. The second layer 220 covers the surface of the first layer 210 that is close to the second layer 220. At this time, the first layer 210 is recessed relative to the second layer 220 in a direction away from the isolation opening 240. When the light-emitting layer 300 is fabricated, a large drop is generated at the edge of the isolation structure 200, and the first layer 210 is recessed relative to the second layer 220. The light-emitting layer 300 is difficult to connect at the edge of the isolation structure 200, resulting in breakage. The breakage of the light-emitting layer 300 forms mutually disconnected light-emitting units 310, thereby reducing crosstalk of charge carriers in the light-emitting layer 300, improving the display effect of the display panel 10, and fabricating the light-emitting unit 310 does not require the use of a precision mask, which can reduce the development and use of precision masks and reduce the fabrication cost.

[0159] Optionally, the first layer 210 includes a conductive material, such as a non-metallic conductive material or a metallic conductive material.

[0160] In some alternative embodiments, the second layer 220 includes a conductive material or an insulating material.

[0161] In these alternative embodiments, the second layer 220 includes a conductive material, such as a non-metallic conductive material or a metallic conductive material. When the second layer 220 is a non-metallic conductive material or an insulating material, it is difficult to etch the second layer 220 during the wet etching process of the first layer 210 with an etching solution, thereby making it easier for the first layer 210 to be recessed relative to the second layer 220.

[0162] In some alternative embodiments, both the first layer 210 and the second layer 220 comprise metallic materials, and the materials of the first layer 210 and the second layer 220 are different.

[0163] In these optional embodiments, when both the first layer 210 and the second layer 220 are made of metallic materials, the first layer 210 can be wet-etched using an etching solution. By adjusting the etching solution, the etching rate of the second layer 220 can be made lower than that of the first layer 210. Because the etching rate of the first layer 210 is higher, even if the second layer 220 is etched to some extent during wet etching, the first layer 210 is etched faster, thus making the first layer 210 recessed relative to the second layer 220.

[0164] Please see Figure 15 , Figure 15 This is a partial cross-sectional view of the display panel in another embodiment.

[0165] As shown in the figure, in some optional embodiments, the isolation structure 200 further includes a third layer 230 located on the side of the first layer 210 facing the substrate 100, wherein the orthographic projection of the first layer 210 onto the substrate 100 is located within the orthographic projection of the third layer 230 onto the substrate 100.

[0166] In these optional embodiments, to obtain the recessed first layer 210, the first layer 210 has a faster etching rate than the second layer 220 and the third layer 230 during the etching process, thus forming the recessed first layer 210. Because the first layer 210 has a faster etching rate, more etching waste is generated and can easily enter other parts of the display panel 10, causing adverse effects. After the third layer 230 is formed, the first layer 210 can adhere better to the third layer 230, and the generated etching waste falls onto the third layer 230, making it easier to clean.

[0167] Optionally, the light-emitting layer 300 includes an electron injection layer (EIL), an electron transport layer (ETL), a light-emitting material layer, a hole injection layer (HIL), and a hole transport layer (HTL).

[0168] A second aspect of this application provides another display panel 10, which includes: a substrate 100; an isolation structure 200 located on one side of the substrate 100, the isolation structure 200 forming an isolation opening 240; a light-emitting layer 300 located on one side of the substrate 100, the light-emitting layer 300 including a light-emitting unit 310 located in the isolation opening 240; and a first electrode layer 400 located on the side of the light-emitting layer 300 away from the substrate 100, the first electrode layer 400 including a first electrode 410 located within the isolation opening 240 and electrically connected to the isolation structure 200, wherein the light-emitting unit 310 has a fifth end 311 and a sixth end 312 disposed opposite to each other in a first direction X, the contact area between the fifth end 311 and the isolation structure 200 is a fifth area, the contact area between the sixth end 312 and the isolation structure 200 is a sixth area, and the sixth area is greater than or equal to the fifth area.

[0169] According to an embodiment of this application, the display panel 10 includes a substrate 100, an isolation structure 200, a light-emitting layer 300, and a first electrode layer 400. When the light-emitting layer 300 is fabricated, a large drop occurs at the edge of the isolation structure 200, making it difficult to connect and causing breakage. The breakage of the light-emitting layer 300 forms mutually disconnected light-emitting units 310 located within the isolation opening 240. This eliminates the need for a precision mask, reducing the development and use of precision masks and lowering fabrication costs. The sixth area is greater than or equal to the fifth area, meaning that the light-emitting unit 310 has a larger overlap area between the sixth end 312 and the isolation structure 200. The light-emitting unit 310 is further biased towards the side of the sixth end 312 during vapor deposition. When the first electrode 410 is subsequently fabricated, the overlap area between the first electrode 410 and the isolation structure 200 on the side of the sixth end 312 decreases, while the overlap area between the first electrode 410 and the isolation structure 200 on the side of the fifth end 311 increases. This improves the overlap effect between the first electrode 410 and the isolation structure 200 on the side of the fifth end 311, thereby reducing the overlap impedance and the power consumption of the display panel 10, improving the dark spot problem caused by poor overlap between the first electrode 410 and the isolation structure 200, and improving the display effect and performance of the display panel 10.

[0170] Optionally, the isolation opening 240 includes alternating first sides 320 and second sides 330 at the orthographic projection edge of the substrate 100. The two first sides 320 are arranged opposite each other along the first direction X, and the two second sides 330 are arranged opposite each other along the second direction Y. The size of the first side 320 is greater than or equal to the size of the second side 330, and the first direction X and the second direction Y intersect.

[0171] The structural design in this embodiment can be applied to other display panels 10. The specific choice can be made according to the actual situation, and this application does not impose any specific restrictions on it.

[0172] An embodiment of the third aspect of this application also provides a display device, including the display panel 10 of any of the first and second aspect embodiments described above. Since the display device provided in the third aspect embodiment includes the display panel 10 of any of the first and second aspect embodiments described above, the display device provided in the third aspect embodiment has the beneficial effects of the display panel 10 of any of the first and second aspect embodiments described above, which will not be elaborated further here.

[0173] 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.

[0174] An embodiment of the third aspect of this application provides a display device that includes a display panel 10 of any of the above embodiments.

[0175] An embodiment of the fourth aspect of this application provides a method for manufacturing a display panel 10, comprising:

[0176] Step S01: An isolation structure is fabricated on the substrate, and the isolation structure encloses and forms an isolation opening;

[0177] Step S02: Prepare a light-emitting layer on the substrate, the light-emitting layer including light-emitting units at least partially located in the isolation opening;

[0178] Step S03: Prepare a first electrode layer on the side of the light-emitting layer away from the substrate. The first electrode layer includes a first electrode located at the isolation opening. The first electrode has a first end and a second end disposed opposite to each other in a first direction. The contact area between the first end and the isolation structure is a first area, and the contact area between the second end and the isolation structure is a second area. The first area is greater than or equal to the second area.

[0179] According to the preparation method of this application embodiment, an isolation structure 200 is prepared in step S01, which encloses an isolation opening 240. A light-emitting layer 300 is prepared in step S02. The light-emitting layer 300 has a large drop at the edge of the isolation structure 200, making it difficult to connect, thus causing it to break. The breakage of the light-emitting layer 300 forms mutually disconnected light-emitting units 310 located within the isolation opening 240. This eliminates the need for a precision mask, reducing the development and use of precision masks and lowering preparation costs. A first electrode layer 400 is prepared in step S03, with a first area greater than or equal to a second area. This means the first electrode 410 has a larger overlap area between its first end 411 and the isolation structure 200, improving the overlap effect between the first electrode 410 and the first electrode 410 on one side of the first end 411. This reduces overlap impedance and power consumption of the display panel 10, improves the dark spot problem caused by poor overlap between the first electrode 410 and the isolation structure 200, and enhances the display effect and performance of the display panel 10.

[0180] Optionally, in step S03, the method further includes:

[0181] The first electrode 410 is vapor-deposited along the first direction X and biased toward the first end 411 so that the first area is greater than or equal to the second area.

[0182] In these alternative embodiments, the first electrode 410 is deposited on the side biased towards the first end 411, increasing the overlap area between the first end 411 of the first electrode 410 and the isolation structure 200, thereby improving the overlap effect between the first electrode 410 and the isolation structure 200 on the side of the first end 411, and reducing the overlap impedance and power consumption of the display panel 10.

[0183] Optionally, in step S03, the method further includes:

[0184] A portion of the first electrode 410 is vapor-deposited along the first direction X and to one side biased towards the first end 411;

[0185] The other part of the first electrode 410 is vapor-deposited along the second direction Y and biased towards the third end 413.

[0186] In these optional embodiments, some of the first electrodes 410 have a larger overlap area between the first end 411 and the isolation structure 200, improving the overlap effect between the first electrode 410 and the first electrode 410 on one side of the first end 411. Another portion of the first electrodes 410 have a larger overlap area between the third end 413 and the isolation structure 200, improving the overlap effect between the first electrode 410 and the isolation structure 200 on one side of the third end 413. The overlap impedance of all the first electrodes 410 and the isolation structure 200 is reduced, improving the display effect of the display panel 10.

[0187] The embodiments described above are not exhaustive, nor do they limit the invention to the specific embodiments described. 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, The display panel includes: substrate; An isolation structure is located on one side of the substrate, and the isolation structure encloses and forms an isolation opening; A light-emitting layer is located on one side of the substrate, and the light-emitting layer includes light-emitting units that are at least partially located in the isolation opening; A first electrode layer is located on the side of the light-emitting layer away from the substrate. The first electrode layer includes a first electrode located within the isolation opening and electrically connected to the isolation structure. The first electrode has a first end and a second end disposed opposite to each other in a first direction. The contact area between the first end and the isolation structure is a first area, and the contact area between the second end and the isolation structure is a second area. The first area is greater than or equal to the second area.

2. The display panel according to claim 1, characterized in that, The second end is projected onto the substrate in a direction that is within the projection of the light-emitting unit onto the substrate. Preferably, the second end is spaced apart from the isolation structure; Preferably, a portion of the light-emitting unit is located between the second end and the isolation structure.

3. The display panel according to claim 1, characterized in that, The distance between the first end and the substrate is a first distance, and the distance between the second end and the substrate is a second distance. The first distance is greater than or equal to the second distance.

4. The display panel according to claim 1, characterized in that, The first electrode also has a third end and a fourth end disposed opposite to each other in a second direction, the contact area between the third end and the isolation structure is a third area, the contact area between the fourth end and the isolation structure is a fourth area, the third area is greater than or equal to the fourth area, and the first direction and the second direction intersect. Preferably, the area corresponding to a portion of the first electrodes is larger than the second area, and the area corresponding to another portion of the first electrodes is larger than the fourth area; Preferably, the orthographic projection of the fourth end onto the substrate is located within the orthographic projection of the light-emitting unit onto the substrate; Preferably, the fourth end is spaced apart from the isolation structure; Preferably, some of the light-emitting units are located between the fourth end and the isolation structure.

5. The display panel according to claim 4, characterized in that, The distance between the third end and the substrate is the third distance, and the distance between the fourth end and the substrate is the fourth distance. The third distance is greater than or equal to the fourth distance.

6. The display panel according to claim 1, characterized in that, The light-emitting unit has a fifth end and a sixth end disposed opposite to each other in the first direction. The contact area between the fifth end and the isolation structure is the fifth area, and the contact area between the sixth end and the isolation structure is the sixth area. The sixth area is greater than or equal to the fifth area. Preferably, the first end and the sixth end are respectively located on opposite sides of the isolation opening in the first direction.

7. The display panel according to claim 6, characterized in that, The distance between the fifth end and the substrate is the fifth distance, and the distance between the sixth end and the substrate is the sixth distance, wherein the sixth distance is greater than or equal to the fifth distance.

8. The display panel according to claim 6, characterized in that, The fifth end is projected onto the substrate in a direction that is within the projection of the first electrode onto the substrate. Preferably, the fifth end is spaced apart from the isolation structure; Preferably, a portion of the first electrode is located between the fifth end and the isolation structure.

9. The display panel according to claim 6, characterized in that, The light-emitting unit has a seventh end and an eighth end disposed opposite to each other in a second direction. The contact area between the seventh end and the isolation structure is the seventh area, and the contact area between the eighth end and the isolation structure is the eighth area. The eighth area is greater than or equal to the seventh area. Preferably, the sixth area corresponding to some of the light-emitting units is larger than the fifth area, and the eighth area corresponding to another part of the light-emitting units is larger than the seventh area.

10. The display panel according to claim 9, characterized in that, The distance between the seventh end and the substrate is the seventh distance, and the distance between the eighth end and the substrate is the eighth distance, wherein the eighth distance is greater than or equal to the seventh distance.

11. The display panel according to claim 1, characterized in that, The isolation opening on the orthographic projection edge of the substrate includes alternating first and second sides, with two first sides arranged opposite to each other in the first direction and two second sides arranged opposite to each other in the second direction, or with two first sides arranged opposite to each other in the second direction and two second sides arranged opposite to each other in the first direction, and the size of the first side being greater than or equal to the size of the second side. Preferably, the two first edges of a portion of the isolation opening are arranged opposite each other in the first direction, and the two first edges of another portion of the isolation opening are arranged opposite each other in the second direction.

12. The display panel according to claim 1, characterized in that, At least one of the first ends of two adjacent first electrodes is in contact with the portion of the isolation structure located between the two adjacent first electrodes; Preferably, the first ends of two adjacent first electrodes are in contact with the portion of the isolation structure located between the two adjacent first electrodes; Preferably, the isolation structure includes a first segment and a second segment disposed opposite to each other in the first direction, wherein one of the first ends of two adjacent first electrodes is in contact with the first segment and the other is in contact with the second segment.

13. The display panel according to claim 1, characterized in that, The display panel also includes: A pixel definition layer is located on one side of the substrate. The pixel definition layer includes a pixel defining portion and a pixel opening formed by the pixel defining portion. The pixel opening and the isolation opening are in communication. Preferably, the display panel further includes a second electrode located between the substrate and the light-emitting unit, with at least a portion of the second electrode exposed through the pixel opening.

14. The display panel according to claim 13, characterized in that, The first electrode includes a first portion and a second portion spaced apart in the first direction. The orthographic projections of the first portion and the second portion onto the substrate are respectively located within the orthographic projections of two adjacent pixel defining portions onto the substrate. The orthographic projection area of ​​the first portion onto the substrate is greater than or equal to the orthographic projection area of ​​the second portion onto the substrate. Preferably, the first end is located in the first portion, and the second end is located in the second portion.

15. The display panel according to claim 13, characterized in that, The light-emitting unit includes a third portion and a fourth portion spaced apart in the first direction. The orthographic projections of the third portion and the fourth portion onto the substrate are respectively located within the orthographic projections of two adjacent pixel-defining portions onto the substrate. The orthographic projection area of ​​the fourth portion onto the substrate is greater than or equal to the orthographic projection area of ​​the third portion onto the substrate.

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

17. A display panel, characterized in that, The display panel includes: substrate; An isolation structure is located on one side of the substrate, and the isolation structure encloses and forms an isolation opening; A light-emitting layer is located on one side of the substrate, and the light-emitting layer includes light-emitting units that are at least partially located in the isolation opening; A first electrode layer is located on the side of the light-emitting layer opposite to the substrate. The first electrode layer includes a first electrode located within the isolation opening and electrically connected to the isolation structure. The light-emitting unit has a fifth end and a sixth end that are arranged opposite to each other in a first direction. The contact area between the fifth end and the isolation structure is the fifth area, and the contact area between the sixth end and the isolation structure is the sixth area. The sixth area is greater than or equal to the fifth area.

18. The display panel according to claim 17, characterized in that, The isolation opening on the orthographic projection edge of the substrate includes alternating first and second sides, with two first sides arranged opposite each other along the first direction and two second sides arranged opposite each other along the second direction. The size of the first side is greater than or equal to the size of the second side, and the first and second directions intersect.

19. A display device, characterized in that, Includes the display panel as described in any one of claims 1-18.

20. A method for manufacturing a display panel, characterized in that, include: An isolation structure is fabricated on a substrate, the isolation structure enclosing an isolation opening; A light-emitting layer is prepared on the substrate, the light-emitting layer comprising light-emitting units at least partially located in the isolation opening; A first electrode layer is prepared on the side of the light-emitting layer away from the substrate. The first electrode layer includes a first electrode located at the isolation opening. The first electrode has a first end and a second end disposed opposite to each other in a first direction. The contact area between the first end and the isolation structure is a first area, and the contact area between the second end and the isolation structure is a second area. The first area is greater than or equal to the second area.

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