Display panel, preparation method thereof and display device

Abstract

The invention provides a display panel, a preparation method thereof and a display device. The display panel comprises a substrate; the first planarization layer is located on one side of the substrate; the multiple first isolation structures are located on the side, away from the substrate, of the first planarization layer, and multiple first isolation openings and light-transmitting openings located in the light-transmitting display area are defined by the multiple first isolation structures; the sub-pixels are at least partially located in the first isolation openings; the transparent conducting layer is located in the light-transmitting display area and located between the first planarization layer and the substrate; wherein the plurality of sub-pixels in the light-transmitting display area and the first isolation structures are electrically connected through the transparent conductive layer. According to the display panel, the sub-pixels are connected together through the transparent conductive layer, the transparent conductive path is formed between the sub-pixels and used for transmitting current to drive the sub-pixels to emit light, high light transmission can be kept, and meanwhile the over-etching condition of the transparent conductive layer is improved.

Description

Technical Field

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

[0002] OLED (Organic Light-Emitting Diode) is an active light-emitting unit with a sandwich structure consisting of multiple organic layers and electrodes on both sides. Currently, display screens based on AMOLED (Active-matrix organic light-emitting diode) have been commercialized in the fields of smartphones, watches, and laptops.

[0003] However, existing display screens are prone to dark pixels, and display performance needs to be improved. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a display panel and a preparation method thereof, as well as a display device that can help improve pixel dark spots and enhance performance.

[0005] Based on the above purpose, the present application provides a display panel, which includes a light-transmitting display area, and the display panel also includes:

[0006] substrate;

[0007] A first planarization layer, located on one side of the substrate;

[0008] A plurality of first isolation structures are located on a side of the first planarization layer away from the substrate, and the plurality of first isolation structures enclose a plurality of first isolation openings and a light-transmitting opening located in the light-transmitting display area;

[0009] a plurality of sub-pixels, the sub-pixels being at least partially located in the first isolation opening;

[0010] A transparent conductive layer, located in the light-transmitting display area and between the first planarization layer and the substrate;

[0011] Wherein, a plurality of sub-pixels located in the light-transmitting display area and the first isolation structures are electrically connected via a transparent conductive layer.

[0012] In one embodiment, the transparent conductive layer includes a first transparent conductive wire and a second transparent conductive wire, a plurality of sub-pixels having the same luminous color are electrically connected through the first transparent conductive wire, and at least two first isolation structures are electrically connected through the second transparent conductive wire;

[0013] Preferably, the sub-pixel comprises a first electrode, a light-emitting functional layer and a second electrode sequentially stacked on the substrate, the light-emitting functional layer and the second electrode being located in the first isolation opening; the first electrodes of at least two sub-pixels having the same light-emitting color are connected via a first transparent wire; preferably, the isolation structure comprises a support portion and a crown portion, the crown portion being located on a side of the support portion away from the substrate, the orthographic projection of the support portion on the substrate being located within the orthographic projection of the crown portion on the substrate; the support portion is electrically connected to the second electrode;

[0014] The plurality of support parts are electrically connected via a second transparent wire;

[0015] Preferably, the orthographic projection of the first isolation opening on the substrate is located within the orthographic projection range of the first electrode on the substrate.

[0016] In one embodiment, the orthographic projection of the first transparent conductive line on the substrate and the orthographic projection of the second transparent conductive line on the substrate do not overlap each other;

[0017] Preferably, the orthographic projection of the first transparent wire on the substrate at least partially overlaps with the orthographic projection of the light-transmitting opening on the substrate, and the orthographic projection of the second transparent wire on the substrate at least partially overlaps with the orthographic projection of the light-transmitting opening on the substrate.

[0018] In one embodiment, the first planarization layer includes a plurality of first electrode vias and second vias, the sub-pixels are connected to the first transparent wires through the first electrode vias, and the isolation structure is connected to the second transparent wires through the second vias;

[0019] Preferably, the orthographic projection of the first electrode via hole on the substrate is located within the orthographic projection range of the isolation structure on the substrate;

[0020] Preferably, the orthographic projection of the first electrode via hole on the substrate is located within the orthographic projection range of the crown of the isolation structure on the substrate;

[0021] Preferably, the orthographic projection of the second via hole on the substrate is located within the orthographic projection range of the isolation structure on the substrate;

[0022] Preferably, the orthographic projection of the second via hole on the substrate is located within the orthographic projection range of the support portion of the isolation structure on the substrate.

[0023] In one embodiment, the display panel further includes:

[0024] A pixel definition layer, the pixel definition layer defines a pixel opening correspondingly connected to the first isolation opening;

[0025] The first isolation structure is located on a side of the pixel definition layer away from the first planarization layer. The pixel definition layer also defines a third via hole, which is connected to the second via hole. The support portion of the isolation structure is electrically connected to the second transparent wire through the third via hole and the second via hole.

[0026] In one embodiment, the display panel further includes a main display area, which at least partially surrounds the light-transmitting display area; the display panel further includes:

[0027] A second isolation structure is located in the main display area, and a plurality of second isolation openings are formed by the second isolation structure, and the sub-pixels are at least partially located in the second isolation openings;

[0028] A first metal layer includes a plurality of first metal wirings, wherein the plurality of first metal wirings are located in a main display area;

[0029] Preferably, the first planarization layer further includes a second electrode via hole, and the sub-pixel is electrically connected to the first metal trace through the second electrode via hole.

[0030] In one embodiment, the display panel further includes:

[0031] The second metal trace,

[0032] The second transparent wire is electrically connected to the second metal wire, and the orthographic projection of the second metal wire on the substrate overlaps with the orthographic projection of the support portion on the substrate;

[0033] Preferably, at least one second metal wiring is arranged corresponding to the first isolation structure, adjacent second metal wirings are arranged at intervals, and the orthographic projection of the second metal wiring on the substrate is located within the orthographic projection range of the support portion on the substrate;

[0034] Preferably, the second metal wiring is located between the substrate and the second transparent wire, the second transparent wire covers a side of the second metal wiring away from the substrate, and a side of the isolation structure close to the substrate is electrically connected to the second transparent wire;

[0035] Preferably, the second metal wiring is located between the second transparent wire and the supporting portion of the isolation structure, the second metal wiring is located on a side of the second transparent wire away from the substrate, and a side of the isolation structure close to the substrate is electrically connected to the second metal wiring;

[0036] Preferably, the second metal wiring is prepared in the same layer as the first metal wiring.

[0037] In one embodiment, the display panel further includes a non-display area, the non-display area at least partially surrounds the main display area, the display panel further includes a third metal trace and a third transparent wire, the third metal trace and the third transparent wire are located in the non-display area, the third metal trace is electrically connected to the third transparent wire, and the third metal trace is located on a side of the third transparent wire close to the substrate;

[0038] The orthographic projection of the third metal wiring on the substrate is located inside the orthographic projection of the third transparent wire on the substrate, and the third transparent wire covers the side wall of the third metal wiring;

[0039] Preferably, the third metal wiring is prepared in the same layer as the first metal wiring, and the third transparent conductive line is prepared in the same layer as the first transparent conductive line.

[0040] Based on the same inventive concept, the present application also provides a display panel, the display panel comprising:

[0041] substrate;

[0042] A plurality of first isolation structures are located on one side of the substrate, and the plurality of first isolation structures are enclosed to form a plurality of first isolation openings and a light-transmitting opening;

[0043] a plurality of sub-pixels, the sub-pixels being at least partially located in the first isolation opening;

[0044] A plurality of sub-pixels having the same luminous color are electrically connected via a first transparent wire;

[0045] At least two first isolation structures are electrically connected via a second transparent wire.

[0046] In one embodiment, the first transparent conductive line and the second transparent conductive line are arranged in the same layer and are located in the transparent conductive layer;

[0047] Preferably, the display panel further comprises a first planarization layer, and the transparent conductive layer is located between the substrate and the first planarization layer;

[0048] The first planarization layer includes a plurality of first electrode vias and second vias, the sub-pixels are connected to the first transparent wires through the first electrode vias, and the isolation structure is connected to the second transparent wires through the second vias;

[0049] Preferably, the orthographic projection of the first electrode via hole on the substrate is located within the orthographic projection range of the isolation structure on the substrate;

[0050] Preferably, the orthographic projection of the first electrode via hole on the substrate is located within the orthographic projection range of the crown of the isolation structure on the substrate;

[0051] Preferably, the orthographic projection of the second via hole on the substrate is located within the orthographic projection range of the isolation structure on the substrate;

[0052] Preferably, the orthographic projection of the second via hole on the substrate is located within the orthographic projection range of the support portion of the isolation structure on the substrate.

[0053] In one embodiment, the orthographic projection of the first transparent conductive line on the substrate and the orthographic projection of the second transparent conductive line on the substrate do not overlap each other;

[0054] Preferably, the orthographic projection of the first transparent wire on the substrate at least partially overlaps with the orthographic projection of the light-transmitting opening on the substrate, and the orthographic projection of the second transparent wire on the substrate overlaps with the orthographic projection of the light-transmitting opening on the substrate.

[0055] Based on the same inventive concept, the present application also provides a method for preparing a display panel.

[0056] The display panel includes a main display area and a light-transmitting display area, the main display area at least partially surrounds the light-transmitting display area, and the method includes:

[0057] A transparent conductive layer is formed on one side of the substrate, and the transparent conductive layer is located in the light-transmitting display area;

[0058] Forming a first planarization layer on the transparent conductive layer;

[0059] A plurality of first isolation structures and a second isolation structure are formed on a side of the first planarization layer away from the substrate, wherein the plurality of first isolation structures enclose a plurality of first isolation openings and light-transmitting openings located in the light-transmitting display area; and the second isolation structures enclose a plurality of second isolation openings;

[0060] Sub-pixels are manufactured in the first isolation opening and the second isolation opening, wherein a plurality of sub-pixels located in the light-transmitting display area and the first isolation structures are electrically connected via a transparent conductive layer.

[0061] In one embodiment, before forming a transparent conductive layer on one side of the substrate, the method further includes:

[0062] A first metal wiring is fabricated on one side of the substrate, the first metal wiring is located in the main display area, and the first planarization layer also covers the first metal wiring;

[0063] A plurality of second electrode via holes are opened on the first planarization layer, and the sub-pixels are connected to the first metal wiring through the second electrode via holes.

[0064] In one embodiment, a plurality of first isolation structures and second isolation structures are formed on a side of the first planarization layer away from the substrate, including:

[0065] forming an isolation material layer on a side of the first planarization layer facing away from the substrate;

[0066] A patterned isolation material layer is formed to form a plurality of first isolation structures in the light-transmitting display area and a second isolation structure in the main display area;

[0067] Preferably, before manufacturing a plurality of first isolation structures and second isolation structures on a side of the first planarization layer away from the substrate, the method further comprises:

[0068] A plurality of first electrodes of sub-pixels arranged at intervals are formed on a side of the first planarization layer away from the substrate, a pixel definition layer is formed on the first electrode, a plurality of pixel openings are formed in the pixel definition layer, the first isolation opening and the second isolation opening correspond to and are connected with the pixel openings respectively, and the first electrode is at least partially exposed to the pixel opening;

[0069] A first isolation structure and a second isolation structure are fabricated on the pixel definition layer.

[0070] In one embodiment, forming a transparent conductive layer on one side of a substrate includes:

[0071] A conductive material layer is formed on a side of the first planarization layer away from the substrate, and the conductive material layer is patterned to form a first metal trace and a second metal trace; the orthographic projections of the first metal trace and the second metal trace on the substrate do not overlap with each other, the second metal trace is electrically connected to the first isolation structure, and the orthographic projection of the second metal trace on the substrate overlaps with the orthographic projection of the first isolation structure on the substrate.

[0072] Based on the same inventive concept, the present application also provides a display device, which includes the above-mentioned display panel.

[0073] Compared with the prior art, the display panel provided by the present application, by arranging the transparent conductive layer between the first planarization layer and the substrate, in the light-transmitting display area, the transparent conductive layer connects the sub-pixels together, and at the same time electrically connects the two first isolation structures, which can provide a relatively stable and uniform current path, maintain high light transmittance, and ensure the consistency of screen light emission, thereby improving display quality. In addition, the first planarization layer protects the transparent conductive layer, improves the over-engraving of the transparent conductive layer, and solves the problem of dark spots in pixels caused by the disconnection of the transparent conductive layer in the light-transmitting display area. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0075] Figure 1 is a schematic diagram of a related display panel;

[0076] Figure 2 is a schematic diagram of a hierarchical structure of a related display panel;

[0077] Figure 3 A schematic diagram of a display panel provided in an embodiment of the present application;

[0078] Figure 4 A schematic diagram of the hierarchical structure of a main display area of ​​a display panel provided in an embodiment of the present application;

[0079] Figure 5 A schematic diagram of the hierarchical structure of a light-transmitting display area of ​​a display panel provided in one embodiment of the present application;

[0080] Figure 6 A schematic diagram of the hierarchical structure of a light-transmitting display area of ​​a display panel provided in another embodiment of the present application;

[0081] Figure 7 A schematic diagram of the hierarchical structure of a light-transmitting display area of ​​a display panel provided in another embodiment of the present application;

[0082] Figure 8 A schematic diagram of the hierarchical structure of a light-transmitting display area of ​​a display panel provided in another embodiment of the present application;

[0083] Fig. 9 A schematic diagram of a local structure of a display panel provided in another embodiment of the present application;

[0084] Fig.10 A flow chart of a method for preparing a display panel provided in another embodiment of the present application;

[0085] Fig.11 A schematic diagram of a hierarchical structure of a display panel provided in an embodiment of the present application;

[0086] Fig.12 A schematic diagram of the hierarchical structure of a display panel provided in one embodiment of the present application.

[0087] Marking Description:

[0088] 100, display panel; 101, main display area; 102, light-transmitting display area; 103, non-display area;

[0089] 11. Substrate; 110. Base; 111. Second planarization layer; 12. First planarization layer; 121. First electrode via hole; 122. Second via hole; 123. Second electrode via hole; 13. Pixel definition layer; 131. Third via hole; 14. Isolation structure; 141. First isolation opening; 142. Transparent opening; 143. Support portion; 144. Crown; 15. Transparent conductive layer; 151. First transparent wire; 152. Second transparent wire; 153. Third transparent wire; 16. Sub-pixel; 160. Light-emitting unit; 161. First electrode; 162. Light-emitting functional layer; 163. Second electrode; 17. First metal layer; 171. First metal trace; 172. Second metal trace; 173. Third metal trace; 18. First packaging layer; 19. Second isolation structure; 191. Second isolation opening. DETAILED DESCRIPTION

[0090] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0091] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0092] UDC (Under Display Camera) technology allows the photosensitive components to be hidden under the display panel, thereby realizing a full-screen design and providing a more immersive visual experience. For example, on display devices such as mobile phones and tablets, it is necessary to integrate photosensitive components such as a front camera, an infrared sensor, and a proximity light sensor on one side of the display panel. In some cases, a translucent display area can be set on the display panel, and the photosensitive component can be set on the back of the translucent display area. While ensuring the normal operation of the photosensitive component, a full-screen display of the display device can be achieved.

[0093] Reference Figure 1 and Figure 2 , is a related display panel 100, which includes a main display area 101, a light-transmitting display area 102 and a non-display area 103, wherein the main display area 101 is arranged around the light-transmitting display area 102, and the non-display area 103 is arranged around the main display area 101, and the light-transmitting display area 102 is a UDC area. The display panel 100 also includes a substrate 11, a first planarization layer 12, a pixel definition layer 13, an isolation structure 14 and a transparent conductive layer 15, wherein the first planarization layer 12 and the pixel definition layer 13 are sequentially stacked on the substrate 11, and the isolation structure 14 is located on the side of the pixel definition layer 13 away from the substrate 11, and a plurality of first isolation openings 141 and a plurality of light-transmitting openings 142 can be formed. The transparent conductive layer 15 is located in the light-transmitting display area 102, and the transparent conductive layer 15 is located between the first planarization layer 12 and the pixel definition layer 13.

[0094] In order to improve the transmittance, the method of reducing the pixel light-emitting area is usually adopted in the light-transmitting display area 102, and multiple sub-pixels are connected together through the transparent conductive layer 15 for driving. After long-term research, the inventor found that the cathode coverage under the isolation structure 14 is relatively thin, resulting in the cathode being difficult to effectively block the excessive etching of the chemical vapor deposition (CVD) layer during the etching process, thereby causing etching damage to the pixel definition layer 13 at the boundary of the isolation structure 14 during etching. This damage may further affect the transparent wires in the transparent conductive layer 15 in the light-transmitting display area 102, causing the transparent wires to break, and ultimately causing the problem of dark spots in the pixels of the light-transmitting display area 102.

[0095] Based on this, the present application provides a display panel and a method for manufacturing the same, and a display device to solve the above technical problems, as detailed in the following embodiments.

[0096] Reference Figure 3 , Figure 5 As shown, an embodiment of the present application provides a display panel 100, which includes a light-transmitting display area 102. The display panel 100 also includes a substrate 11, a first planarization layer 12, a plurality of first isolation structures 14, and a plurality of sub-pixels 16, wherein the first planarization layer 12 is located on one side of the substrate 11, and the first isolation structure 14 is located on the side of the first planarization layer 12 away from the substrate 11; the plurality of first isolation structures 14 enclose a plurality of first isolation openings 141 and light-transmitting openings 142, and the first isolation openings 141 and the light-transmitting openings 142 are located in the light-transmitting display area 102. The display panel 100 also includes a transparent conductive layer 15, which is located in the light-transmitting display area 102, and the transparent conductive layer 15 is located between the first planarization layer 12 and the substrate 11; the plurality of sub-pixels 16 located in the light-transmitting display area 102 and the first isolation structures 14 are electrically connected through the transparent conductive layer 15.

[0097] The display panel 100 provided in the present application, by setting the transparent conductive layer 15 between the first planarization layer 12 and the substrate 11, in the light-transmitting display area 102, the transparent conductive layer 15 can connect the sub-pixels 16 together, and form a transparent conductive path between the sub-pixels 16 for transmitting current to drive the sub-pixels 16 to emit light, while maintaining high light transmittance, so that the light-transmitting display area 102 can realize transparent display or under-screen recognition functions such as fingerprint recognition, under-screen camera, etc.; at the same time, the first planarization layer 12 covers the transparent conductive layer 15, and the first planarization layer 12 protects the transparent conductive layer 15, improves the over-engraving of the transparent conductive layer 15, and solves the problem of dark spots in pixels caused by broken transparent conductive layer 15 in the light-transmitting display area 102.

[0098] Specifically, a plurality of first isolation openings 141 and a plurality of light-transmitting openings 142 are defined by the first isolation structure 14, the light-transmitting openings 142 are located in the light-transmitting display area 102, and the first isolation openings 141 and the light-transmitting openings 142 are spaced apart from each other. It should be noted that the arrangement of the sub-pixels 16 may be an RGB arrangement, specifically, the sub-pixels may include a G sub-pixel capable of emitting green light, an R sub-pixel capable of emitting red light, and a B sub-pixel capable of emitting blue light, and each sub-pixel 16 includes a corresponding light-emitting unit 160.

[0099] Reference Figure 5 , Figure 6 As shown, in one embodiment, the transparent conductive layer 15 includes a first transparent conductive wire 151 and a second transparent conductive wire 152, a plurality of sub-pixels having the same luminous color are electrically connected through the first transparent conductive wire 151, and at least two first isolation structures 14 are electrically connected through the second transparent conductive wire 152.

[0100] Specifically, the transparent conductive layer 15 in the light-transmitting display area 102 can be designed for routing, so that the sub-pixels of the same luminous color can be connected by the first transparent wire 151, and the first isolation structure 14 can be connected together by the second transparent wire 152 to conduct the corresponding power signal.

[0101] Reference Figure 5 , Figure 6 As shown, in one preferred embodiment, the sub-pixel 16 includes a first electrode 161, a light-emitting functional layer 162, and a second electrode 163 sequentially stacked on the substrate 11, and the light-emitting functional layer 162 and the second electrode 163 are located in the first isolation opening 141. The first electrodes 161 of at least two sub-pixels 16 with the same light-emitting color are electrically connected through the first transparent wire 151.

[0102] Preferably, the orthographic projection of the first isolation opening 141 on the substrate 11 is within the orthographic projection range of the first electrode 161 on the substrate 11. Specifically, the first electrode 161 of the sub-pixel 16 is partially exposed in the first isolation opening 141 and connected to the light-emitting functional layer 162 and the second electrode 163 in the first isolation opening 141.

[0103] In one preferred embodiment, the isolation structure 14 includes a support portion 143 and a crown portion 144, wherein the crown portion 144 is located on a side of the support portion 143 away from the substrate 11, and the orthographic projection of the support portion 143 on the substrate 11 is located within the orthographic projection of the crown portion 144 on the substrate 11; the support portion 143 is electrically connected to the second electrode 163. The plurality of support portions 143 are electrically connected to each other through the second transparent wire 152.

[0104] In a preferred embodiment of the present application, the first electrode 161 is an anode, and the second electrode 163 is a cathode.

[0105] Among them, the first electrode 161 between the plurality of sub-pixels 16 is connected by the first transparent wire 151, the support portion 143 is a conductive structure and overlaps with the second electrode 163, and the support portion 143 between the plurality of isolation structures 14 is connected by the second transparent wire 152, so that the transparent conductive layer 15 can be connected to the cathode signal of the light-emitting unit 160 of each sub-pixel 16, and a common electrode can be formed for driving. For example, the second electrode 163 can be electrically connected to the power signal line ELVSS through the second transparent wire 152 to provide a common voltage for all sub-pixels 16.

[0106] In other embodiments, the first electrode 161 may also be a cathode, and the second electrode 163 may also be an anode.

[0107] Preferably, the material of the transparent conductive layer 15 may be indium tin oxide (ITO), which is a material with good electrical conductivity and light transmittance.

[0108] Specifically, the light-emitting functional layer 162 may include one or more of an electron injection layer, an electron transport layer, a hole blocking layer, an electron blocking layer, a hole transport layer, and a hole injection layer.

[0109] Specifically, at least the portion of the isolation structure 14 away from the substrate 11 is configured to be wide at the top and narrow at the bottom, so that the isolation structure 14 can block the light-emitting functional layer 162 of the adjacent light-emitting unit 160 to reduce the current crosstalk problem of the adjacent light-emitting units 160 .

[0110] Reference Figure 5 , Figure 6 As shown, in one embodiment, the orthographic projection of the first transparent conductive line 151 on the substrate 11 and the orthographic projection of the second transparent conductive line 152 on the substrate 11 do not overlap each other.

[0111] Preferably, the orthographic projection of the first transparent wire 151 on the substrate 11 at least partially overlaps with the orthographic projection of the light-transmitting opening 142 on the substrate 11 , and the orthographic projection of the second transparent wire 152 on the substrate 11 at least partially overlaps with the orthographic projection of the light-transmitting opening 142 on the substrate 11 .

[0112] The positions of the first transparent conductive wire 151 and the second transparent conductive wire 152 correspond to the light-transmitting opening 142 , which can improve the light-transmitting performance of the light-transmitting display area 102 , and no winding arrangement is required to reduce the transmission resistance.

[0113] Reference Figure 5 , Figure 6As shown, in one embodiment, the first planarization layer 12 includes a plurality of first electrode vias 121 and second vias 122 , the sub-pixel 16 is connected to the first transparent wire 151 through the first electrode vias 121 , and the isolation structure 14 is connected to the second transparent wire 152 through the second vias 122 .

[0114] Preferably, the orthographic projection of the first electrode via 121 on the substrate 11 is located within the orthographic projection range of the isolation structure 14 on the substrate 11 .

[0115] Preferably, the orthographic projection of the first electrode via 121 on the substrate 11 is located within the orthographic projection range of the crown portion 144 of the isolation structure 14 on the substrate 11 .

[0116] Preferably, the orthographic projection of the second via hole 122 on the substrate 11 is located within the orthographic projection range of the isolation structure 14 on the substrate 11 .

[0117] Preferably, the orthographic projection of the second via hole 122 on the substrate 11 is located within the orthographic projection range of the support portion 143 of the isolation structure 14 on the substrate 11 .

[0118] The sub-pixel 16 is connected to the first transparent conductive line 151 through a via hole, and the isolation structure 14 is connected to the second transparent conductive line 152 through a via hole, so as to ensure smooth transmission of signals between different layers and integrate circuit functions.

[0119] Reference Figure 6 As shown, in one embodiment, the display panel 100 further includes a pixel definition layer 13, and the pixel definition layer 13 defines a pixel opening corresponding to the first isolation opening 141. The isolation structure 14 is located on the side of the pixel definition layer 13 away from the first planarization layer 12, and the pixel definition layer 13 also defines a third via hole 131, and the third via hole 131 is correspondingly connected to the second via hole 122. The support portion 143 of the isolation structure 14 is electrically connected to the second transparent wire 152 through the third via hole 131 and the second via hole 122. That is, the support portion 143 is electrically connected to the second transparent wire 152 through the sleeve hole of the pixel definition layer 13 and the first planarization layer 12. While the support portion 143 overlaps with the second electrode 163, it also overlaps with the second transparent wire 152, forming an effective electrical connection between different layers, ensuring that the second electrode 163 of each sub-pixel can receive a consistent reference potential, thereby ensuring uniform light emission of the pixel and stability of display performance. Connecting the second transparent wire 152 through the sleeve hole helps to reduce display abnormalities caused by interlayer connection problems.

[0120] Reference Figure 3 , Figure 4As shown, the display panel 100 also includes a main display area 101, and the main display area 101 at least partially surrounds the light-transmitting display area 102. The display panel 100 also includes a second isolation structure 19 and a first metal layer 17, the second isolation structure 19 is located in the main display area 101, and the second isolation structure 19 encloses a plurality of second isolation openings 191, and at least some sub-pixels 16 are located in the second isolation openings 191. The first metal layer 17 includes a plurality of first metal traces 171, and the plurality of first metal traces 171 are located in the main display area 101. Preferably, the first planarization layer 12 also includes a second electrode via 123, and the sub-pixels 16 are electrically connected to the first metal traces 171 through the second electrode via 123. Among them, the first metal layer 17 is a trace layer closest to the side of the second isolation structure 19, such as a power signal line layer or a data signal trace layer. In the main display area 101, the sub-pixels 16 corresponding to the second isolation openings 191 are connected to the first metal traces 171 via holes, so that each sub-pixel 16 is connected to the signal of the trace layer.

[0121] Specifically, the sub-pixel 16 located in the main display area 101 has the same structure as the sub-pixel 16 located in the light-transmitting display area 102. The sub-pixel 16 includes a first electrode 161, a light-emitting functional layer 162, and a second electrode 163 stacked in sequence on the substrate 11. The light-emitting functional layer 162 and the second electrode 163 are located in the second isolation opening 191. The first electrode 161 is electrically connected to the first metal wiring 171 through the second electrode via 123.

[0122] Specifically, the light-transmitting display area 102 may be a display area inside the main display area 101 , or may be arranged adjacent to the main display area 101 , and the light transmittance of the light-transmitting display area 102 is greater than the light transmittance of the main display area 101 .

[0123] Specifically, an external photosensitive component is usually arranged below the light-transmitting display area 102 of the display panel 100, so a driving circuit is not arranged in the light-transmitting display area 102, but a driving circuit is arranged in the adjacent main display area 101, and the driving circuit of the main display area 101 can be electrically connected to the sub-pixel of the light-transmitting display area 102 through the transparent conductive layer 15, so that the driving circuit can effectively avoid blocking the external light from entering the photosensitive component. Among them, the first metal wiring 171 can be located in the driving circuit of the sub-pixel 16 in the main display area 101, and the driving circuit is not arranged in the light-transmitting display area 102, and the output end of the driving circuit in the main display area 101 can be electrically connected to the first electrode 161 through the transparent conductive layer 15. The transparent conductive layer 15 can be prepared after the first metal layer 17 is prepared, and the required wiring and connection can be realized without adding additional mask plates and photolithography steps, and a more complex circuit layout can be realized without sacrificing performance.

[0124] Reference Figure 7 , Figure 8As shown, in one embodiment, the display panel 100 further includes a second metal wiring 172, the second metal wiring 172 is electrically connected to the second transparent wire 152, and the orthographic projection of the second metal wiring 172 on the substrate 11 overlaps with the orthographic projection of the support portion 143 on the substrate 11. The second metal wiring 172 is arranged at the overlapping position of the support portion 143 and the second transparent wire 152, and the second metal wiring 172 plays a certain protective role on the support portion 143, which can prevent the support portion 143 from being over-engraved and damaged due to the excessive depth of the sleeve holes of the pixel definition layer 13 and the first planarization layer 12, and in the area where light transmission is not required, the second transparent wire 152 and the second metal wiring 172 are closely overlapped, which helps to reduce the resistance loss in the current path, and at the same time, the close interlayer integration can shorten the distance of current transmission, thereby effectively reducing the voltage drop along the wire path.

[0125] Preferably, at least one second metal trace 172 is disposed corresponding to the first isolation structure 14, and adjacent second metal traces 172 are disposed at intervals, and the orthographic projection of the second metal trace 172 on the substrate 11 is located within the orthographic projection range of the support portion 143 on the substrate 11. In other words, the orthographic projection of the second metal trace 172 on the substrate 11 is located outside the orthographic projection of the light-transmitting opening 142 on the substrate 11, so as to prevent the second metal trace 172 from affecting the light-transmitting effect.

[0126] Preferably, if Figure 8 As shown, the second metal trace 172 is located between the substrate 11 and the second transparent wire 152 , the second transparent wire 152 covers the side of the second metal trace 172 away from the substrate 11 , and the side of the isolation structure 14 close to the substrate 11 is electrically connected to the second transparent wire 152 .

[0127] Preferably, if Figure 7 As shown, the second metal trace 172 is located between the second transparent wire 152 and the support portion 143 of the isolation structure 14, the second metal trace 172 is located on the side of the second transparent wire 152 away from the substrate 11, and the side of the isolation structure 14 close to the substrate 11 is electrically connected to the second metal trace 172. Preferably, the second metal trace 172 and the first metal trace 171 are prepared in the same layer, and the second metal trace 172 and the first metal trace 171 both belong to the first metal layer 17, which can simplify the manufacturing process and improve production efficiency.

[0128] Reference Figure 1 and Fig. 9As shown, in one embodiment, the display panel 100 further includes a non-display area 103, and the non-display area 103 at least partially surrounds the main display area 101. The display panel 100 further includes a third metal trace 173 and a third transparent wire 153, the third metal trace 173 and the third transparent wire 153 are located in the non-display area 103, the third metal trace 173 and the third transparent wire 153 are electrically connected, and the third metal trace 173 is located on a side of the third transparent wire 153 close to the substrate 11. The orthographic projection of the third metal trace 173 on the substrate 11 is located inside the orthographic projection of the third transparent wire 153 on the substrate 11, and the third transparent wire 153 covers the side wall of the third metal trace 173.

[0129] Among them, the third transparent conductive line 153 covers the upper surface and side walls of the third metal wiring 173, thereby protecting the third metal wiring 173, avoiding unnecessary etching of the side walls of the third metal wiring 173 in the subsequent planarization layer development and anode wet etching steps, and reducing structural damage caused by side etching and reliability problems of the metal layer. At the same time, the coverage of the third transparent conductive line 153 also helps prevent the migration and precipitation of silver atoms in the anode material, thereby ensuring the long-term stability and performance of the display panel 100.

[0130] Preferably, the third metal wiring 173 is prepared in the same layer as the first metal wiring 171, and the third metal wiring 173 and the first metal wiring 171 both belong to the first metal layer 17. The third transparent wire 153 is prepared in the same layer as the first transparent wire 151, and the third transparent wire 153 and the first transparent wire 151 both belong to the transparent conductive layer 15. In this way, the manufacturing process can be simplified and the production efficiency can be improved.

[0131] In one embodiment, the first metal trace 171, the second metal trace 172 and the third metal trace 173 are all located in the first metal layer 17. Figure 4 As shown, the substrate 11 may also include a base 110 and a second planarization layer 111, the second planarization layer 111 is located on the base 110, the first transparent wire 151 and the first metal wiring 171 are stacked on the second planarization layer 111 in sequence, and the first planarization layer 12 covers the first metal wiring 171 and the first transparent wire 151 to achieve interlayer insulation.

[0132] Reference Figure 4 , Figure 5 As shown, in one embodiment, the display panel 100 further includes a first encapsulation layer 18 , and the first encapsulation layer 18 covers the light emitting unit 160 and a portion of the isolation structure 14 , so as to protect the light emitting unit 160 and the isolation structure 14 .

[0133] Based on the same inventive concept, Fig.11 , Fig.12As shown, another embodiment of the present application provides a display panel 100, which includes a substrate 11, a plurality of first isolation structures 14 and a plurality of sub-pixels 16, wherein the first isolation structure 14 is located on one side of the substrate 11; the plurality of first isolation structures 14 enclose a plurality of first isolation openings 141 and light-transmitting openings 142, and the first isolation openings 141 and the light-transmitting openings 142 are located in the light-transmitting display area 102. The plurality of sub-pixels 16 having the same luminous color are electrically connected through a first transparent wire 151, and at least two first isolation structures 14 are electrically connected through a second transparent wire 152.

[0134] The display panel 100 provided in the embodiment of the present application can connect multiple sub-pixels 16 of the same luminous color together through the first transparent conductive wire 151, and can transmit current to drive the sub-pixels 16 to emit light; the two first isolation structures 14 are electrically connected through the second transparent conductive wire 152, which can provide a relatively stable and uniform current path, while maintaining high light transmittance, and can also ensure the consistency of screen light emission, thereby improving display quality.

[0135] In one embodiment, the first transparent conductive line 151 and the second transparent conductive line 152 are disposed in the same layer and are located in the transparent conductive layer 15 .

[0136] Reference Figure 5 , Figure 6 As shown, in one preferred embodiment, the display panel 100 further includes a first planarization layer 12 , and the transparent conductive layer 15 is located between the substrate 11 and the first planarization layer 12 .

[0137] Preferably, the first planarization layer 12 includes a plurality of first electrode vias 121 and second vias 122 , the sub-pixels 16 are connected to the first transparent wires 151 through the first electrode vias 121 , and the isolation structures 14 are connected to the second transparent wires 152 through the second vias 122 .

[0138] Preferably, the orthographic projection of the first electrode via 121 on the substrate 11 is located within the orthographic projection range of the isolation structure 14 on the substrate 11 .

[0139] Preferably, the orthographic projection of the first electrode via 121 on the substrate 11 is located within the orthographic projection range of the crown portion 144 of the isolation structure 14 on the substrate 11 .

[0140] Preferably, the orthographic projection of the second via hole 122 on the substrate 11 is located within the orthographic projection range of the isolation structure 14 on the substrate 11 .

[0141] Preferably, the orthographic projection of the second via hole 122 on the substrate 11 is located within the orthographic projection range of the support portion 143 of the isolation structure 14 on the substrate 11 .

[0142] Reference Figure 5 , Figure 6 As shown, in one embodiment, the orthographic projection of the first transparent conductive line 151 on the substrate 11 and the orthographic projection of the second transparent conductive line 152 on the substrate 11 do not overlap each other.

[0143] Preferably, the orthographic projection of the first transparent wire 151 on the substrate 11 at least partially overlaps with the orthographic projection of the light-transmitting opening 142 on the substrate 11 , and the orthographic projection of the second transparent wire 152 on the substrate 11 at least partially overlaps with the orthographic projection of the light-transmitting opening 142 on the substrate 11 .

[0144] The positions of the first transparent conductive line 151 and the second transparent conductive line 152 correspond to the light-transmitting opening 142 , so as to improve the light-transmitting performance of the light-transmitting display area 102 .

[0145] Based on the same inventive concept, Fig.10 As shown, another embodiment of the present application provides a method for preparing a display panel, wherein the display panel 100 prepared by the preparation method can refer to Figures 3 to 8 The display panel 100 includes a main display area 101 and a light-transmitting display area 102, the main display area 101 at least partially surrounds the light-transmitting display area 102, and the preparation method includes the following steps:

[0146] Step S10, forming a transparent conductive layer 15 on one side of the substrate 11, wherein the transparent conductive layer 15 is located in the light-transmitting display area 102;

[0147] Step S20, forming a first planarization layer 12 on the transparent conductive layer 15;

[0148] Step S30, forming a plurality of first isolation structures 14 and a second isolation structure 19 on a side of the first planarization layer 12 away from the substrate 11, wherein the plurality of first isolation structures 14 enclose a plurality of first isolation openings 141 and light-transmitting openings 142 located in the light-transmitting display area 102; and the second isolation structures 19 enclose a plurality of second isolation openings 191;

[0149] Step S40 , manufacturing sub-pixels 16 in the first isolation opening 141 and the second isolation opening 191 , wherein the sub-pixels 16 in the light-transmitting display area 102 and the first isolation structures 14 are electrically connected via the transparent conductive layer 15 .

[0150] The manufacturing method of the display panel provided in the present application manufactures the transparent conductive layer 15 before manufacturing the first planarization layer 12, so that the first planarization layer 12 covers the transparent conductive layer 15. In the light-transmitting display area 102, the transparent conductive layer 15 can connect multiple sub-pixels 16 together and form a transparent conductive path for transmitting current to drive the sub-pixels 16 to emit light, while maintaining high light transmittance. In addition, by utilizing the protective effect of the first planarization layer 12, the over-engraving of the transparent conductive layer 15 is improved, and the problem of dark spots in pixels caused by the disconnection of the transparent conductive layer 15 in the light-transmitting display area 102 is solved.

[0151] In one embodiment, before step S10, the preparation method further includes:

[0152] Step S1, manufacturing a first metal wiring 171 on one side of the substrate 11, the first metal wiring 171 is located in the main display area 101, and the first planarization layer 12 also covers the first metal wiring 171;

[0153] Step S2 , opening a plurality of second electrode via holes 123 on the first planarization layer 12 , and connecting the sub-pixels 16 to the first metal traces 171 through the second electrode via holes 123 .

[0154] The driving circuit where the first metal wiring 171 is located is located in the main display area 101, and no driving circuit is provided in the light-transmitting display area 102. The output end of the driving circuit in the main display area 101 can be electrically connected to the first electrode 161 through the transparent conductive layer 15. After preparing the first metal wiring 171, the transparent conductive layer 15 is prepared, and the required wiring and connection can be realized without adding additional mask plates and photolithography steps, and a more complex circuit layout can be realized without sacrificing performance.

[0155] In one embodiment, step S30 includes the following steps:

[0156] Step S31, forming an isolation material layer on a side of the first planarization layer 12 facing away from the substrate 11;

[0157] Step S32 , patterning the isolation material layer to form a plurality of first isolation structures 14 in the light-transmitting display area 102 , and forming a second isolation structure 19 in the main display area 101 .

[0158] Preferably, before step S30, the preparation method further comprises:

[0159] A plurality of first electrodes 161 of sub-pixels 16 arranged at intervals are formed on a side of the first planarization layer 12 away from the substrate 11, a pixel definition layer 13 is formed on the first electrode 161, a plurality of pixel openings are formed on the pixel definition layer 13, a first isolation opening 141 and a second isolation opening 191 correspond to and are connected to the pixel openings, respectively, and the first electrode 161 is at least partially exposed to the pixel openings;

[0160] Then, a first isolation structure 14 and a second isolation structure 19 are fabricated on the pixel definition layer 13 .

[0161] In one embodiment, step S10 includes:

[0162] A conductive material layer is formed on a side of the first planarization layer 12 away from the substrate 11, and the conductive material layer is patterned to form a first metal trace 171 and a second metal trace 172; the orthographic projections of the first metal trace 171 and the second metal trace 172 on the substrate 11 do not overlap with each other, the second metal trace 172 is electrically connected to the first isolation structure 14, and the orthographic projection of the second metal trace 172 on the substrate 11 overlaps with the orthographic projection of the first isolation structure 14 on the substrate 11.

[0163] Among them, a second metal wiring 172 is set at the overlapping position of the isolation structure 14 and the transparent conductive layer 15. The second metal wiring 172 plays a certain protective role on the isolation structure 14 to prevent the support part 143 from being over-engraved and damaged due to the excessive depth of the holes in the pixel definition layer 13 and the first planarization layer 12.

[0164] Another embodiment of the present application provides a display device, which includes the display panel 100 in the above embodiment. The display device can be located in a smart device (such as a mobile phone, VR device, computer, TV, car display, etc.).

[0165] The display device provided in the present application has a display panel 100 in which a transparent conductive layer 15 is disposed between the first planarization layer 12 and the substrate 11. In the light-transmitting display area 102, the transparent conductive layer 15 connects the sub-pixels 16 together to form a transparent conductive path between the sub-pixels 16 for transmitting current to drive the sub-pixels 16 to emit light while maintaining high light transmittance. At the same time, the first planarization layer 12 covers the transparent conductive layer 15, and the first planarization layer 12 protects the transparent conductive layer 15, thereby improving the over-engraving of the transparent conductive layer 15 and solving the problem of dark spots in pixels caused by the disconnection of the transparent conductive layer 15 in the light-transmitting display area 102.

[0166] In this application, the composition, preparation, etc. of the isolation structure (or partition structure or isolation column) are further described in patents CN118251982A, 202410864269.8, PCT / CN2024 / 098407, PCT / CN2024 / 102783, PCT / CN2024 / 098217, PCT / CN2024 / 099419, and PCT / CN2024 / 099072 for reference.

[0167] Although the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0168] It should be noted that the above is a description of an embodiment of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0169] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A display panel, characterized in that: The display panel includes a light-transmitting display area, and further includes: substrate; A first planarization layer, located on one side of the substrate; A plurality of first isolation structures are located on a side of the first planarization layer away from the substrate, and the plurality of first isolation structures enclose a plurality of first isolation openings and light-transmitting openings located in the light-transmitting display area; a plurality of sub-pixels, the sub-pixels being at least partially located in the first isolation opening; A transparent conductive layer, located in the light-transmitting display area and between the first planarization layer and the substrate; Wherein, the plurality of sub-pixels located in the light-transmitting display area and the first isolation structures are electrically connected via the transparent conductive layer.

2. The display panel according to claim 1, characterized in that: The transparent conductive layer includes a first transparent conductive wire and a second transparent conductive wire, a plurality of sub-pixels having the same luminous color are electrically connected through the first transparent conductive wire, and at least two of the first isolation structures are electrically connected through the second transparent conductive wire; Preferably, the sub-pixel comprises a first electrode, a light-emitting functional layer and a second electrode sequentially stacked on the substrate, and the light-emitting functional layer and the second electrode are located in the first isolation opening; The first electrodes of at least two sub-pixels having the same luminous color are connected through the first transparent wire; preferably, the isolation structure comprises a support portion and a crown portion, the crown portion is located on a side of the support portion away from the substrate, and the orthographic projection of the support portion on the substrate is located within the orthographic projection of the crown portion on the substrate; the support portion is electrically connected to the second electrode; The plurality of support parts are electrically connected to each other through the second transparent wire; Preferably, the orthographic projection of the first isolation opening on the substrate is located within the orthographic projection range of the first electrode on the substrate.

3. The display panel according to claim 2, characterized in that: The orthographic projection of the first transparent conductive line on the substrate and the orthographic projection of the second transparent conductive line on the substrate do not overlap each other; Preferably, the orthographic projection of the first transparent wire on the substrate at least partially overlaps with the orthographic projection of the light-transmitting opening on the substrate, and the orthographic projection of the second transparent wire on the substrate at least partially overlaps with the orthographic projection of the light-transmitting opening on the substrate.

4. The display panel according to claim 2, characterized in that: The first planarization layer includes a plurality of first electrode via holes and second via holes, the sub-pixels are connected to the first transparent wires through the first electrode via holes, and the isolation structure is connected to the second transparent wires through the second via holes; Preferably, the orthographic projection of the first electrode via hole on the substrate is located within the orthographic projection range of the isolation structure on the substrate; Preferably, the orthographic projection of the first electrode via hole on the substrate is located within the orthographic projection range of the crown of the isolation structure on the substrate; Preferably, the orthographic projection of the second via hole on the substrate is located within the orthographic projection range of the isolation structure on the substrate; Preferably, the orthographic projection of the second via hole on the substrate is located within the orthographic projection range of the support portion of the isolation structure on the substrate.

5. The display panel according to claim 4, characterized in that: The display panel further includes: A pixel definition layer, wherein the pixel definition layer defines a pixel opening correspondingly connected to the first isolation opening; The first isolation structure is located on a side of the pixel definition layer away from the first planarization layer. The pixel definition layer also defines a third via hole, which is correspondingly connected to the second via hole. The support portion of the isolation structure is electrically connected to the second transparent wire through the third via hole and the second via hole.

6. The display panel according to claim 2, characterized in that: The display panel further comprises a main display area, wherein the main display area at least partially surrounds the light-transmitting display area; The display panel further includes: A second isolation structure is located in the main display area, the second isolation structure encloses a plurality of second isolation openings, and the sub-pixels are at least partially located in the second isolation openings; A first metal layer, comprising a plurality of first metal traces, wherein the plurality of first metal traces are located in the main display area; Preferably, the first planarization layer further includes a second electrode via hole, and the sub-pixel is electrically connected to the first metal trace through the second electrode via hole.

7. The display panel according to claim 6, characterized in that: The display panel further includes: a second metal wiring electrically connected to the second transparent wire, wherein an orthographic projection of the second metal wiring on the substrate overlaps with an orthographic projection of the support portion on the substrate; Preferably, at least one second metal trace is disposed corresponding to the first isolation structure, and adjacent second metal traces are disposed at intervals, and the orthographic projection of the second metal trace on the substrate is located within the orthographic projection range of the support portion on the substrate; Preferably, the second metal wiring is located between the substrate and the second transparent wire, the second transparent wire covers a side of the second metal wiring away from the substrate, and a side of the isolation structure close to the substrate is electrically connected to the second transparent wire; Preferably, the second metal wiring is located between the second transparent wire and the supporting portion of the isolation structure, the second metal wiring is located on a side of the second transparent wire away from the substrate, and a side of the isolation structure close to the substrate is electrically connected to the second metal wiring; Preferably, the second metal wiring is prepared in the same layer as the first metal wiring.

8. The display panel according to claim 6, characterized in that: The display panel further includes a non-display area, the non-display area at least partially surrounding the main display area, the display panel further includes a third metal wiring and a third transparent wire, the third metal wiring and the third transparent wire are located in the non-display area, the third metal wiring is electrically connected to the third transparent wire, and the third metal wiring is located on a side of the third transparent wire close to the substrate; The orthographic projection of the third metal wiring on the substrate is located inside the orthographic projection of the third transparent wire on the substrate, and the third transparent wire covers the side wall of the third metal wiring; Preferably, the third metal wiring is prepared in the same layer as the first metal wiring, and the third transparent conductive line is prepared in the same layer as the first transparent conductive line.

9. A display panel, characterized in that: The display panel comprises: substrate; A plurality of first isolation structures are located on one side of the substrate, and the plurality of first isolation structures are enclosed to form a plurality of first isolation openings and light-transmitting openings; a plurality of sub-pixels, the sub-pixels being at least partially located in the first isolation opening; The plurality of sub-pixels having the same luminous color are electrically connected via a first transparent wire; At least two of the first isolation structures are electrically connected via a second transparent wire.

10. The display panel according to claim 9, characterized in that: The first transparent conductive line and the second transparent conductive line are arranged in the same layer and are located in the transparent conductive layer; Preferably, the display panel further comprises a first planarization layer, and the transparent conductive layer is located between the substrate and the first planarization layer; The first planarization layer includes a plurality of first electrode via holes and second via holes, the sub-pixels are connected to the first transparent wires through the first electrode via holes, and the isolation structure is connected to the second transparent wires through the second via holes; Preferably, the orthographic projection of the first electrode via hole on the substrate is located within the orthographic projection range of the isolation structure on the substrate; Preferably, the orthographic projection of the first electrode via hole on the substrate is located within the orthographic projection range of the crown of the isolation structure on the substrate; Preferably, the orthographic projection of the second via hole on the substrate is located within the orthographic projection range of the isolation structure on the substrate; Preferably, the orthographic projection of the second via hole on the substrate is located within the orthographic projection range of the support portion of the isolation structure on the substrate.

11. The display panel according to claim 9, characterized in that: The orthographic projection of the first transparent conductive line on the substrate and the orthographic projection of the second transparent conductive line on the substrate do not overlap each other; Preferably, the orthographic projection of the first transparent wire on the substrate at least partially overlaps with the orthographic projection of the light-transmitting opening on the substrate, and the orthographic projection of the second transparent wire on the substrate at least partially overlaps with the orthographic projection of the light-transmitting opening on the substrate.

12. A method for preparing a display panel, characterized in that: The display panel comprises a main display area and a light-transmitting display area, the main display area at least partially surrounds the light-transmitting display area, and the method comprises: A transparent conductive layer is formed on one side of the substrate, wherein the transparent conductive layer is located in the light-transmitting display area; Forming a first planarization layer on the transparent conductive layer; A plurality of first isolation structures and a second isolation structure are formed on a side of the first planarization layer away from the substrate, wherein the plurality of first isolation structures enclose a plurality of first isolation openings and light-transmitting openings located in the light-transmitting display area; and the plurality of second isolation openings are enclosed by the second isolation structures; Sub-pixels are manufactured in the first isolation opening and the second isolation opening, wherein a plurality of the sub-pixels located in the light-transmitting display area and the first isolation structures are electrically connected via the transparent conductive layer.

13. The method for preparing a display panel according to claim 12, characterized in that: Before forming a transparent conductive layer on one side of the substrate, the method further comprises: Making a first metal wiring on one side of the substrate, the first metal wiring is located in the main display area, and the first planarization layer also covers the first metal wiring; A plurality of second electrode via holes are opened on the first planarization layer, and the sub-pixels are connected to the first metal wiring through the second electrode via holes.

14. The method for preparing a display panel according to claim 12, characterized in that: The method of manufacturing a plurality of first isolation structures and second isolation structures on a side of the first planarization layer away from the substrate comprises: forming an isolation material layer on a side of the first planarization layer facing away from the substrate; Patterning the isolation material layer to form a plurality of first isolation structures in the light-transmitting display area and a second isolation structure in the main display area; Preferably, before manufacturing a plurality of first isolation structures and second isolation structures on a side of the first planarization layer away from the substrate, the method further comprises: A plurality of first electrodes of the sub-pixels are formed at intervals on a side of the first planarization layer away from the substrate, a pixel definition layer is formed on the first electrodes, a plurality of pixel openings are formed on the pixel definition layer, the first isolation openings and the second isolation openings correspond to and are connected to the pixel openings respectively, and the first electrodes are at least partially exposed to the pixel openings; The first isolation structure and the second isolation structure are manufactured on the pixel definition layer.

15. The method for preparing a display panel according to claim 12, characterized in that: The step of manufacturing a transparent conductive layer on one side of the substrate comprises: A conductive material layer is formed on a side of the first planarization layer away from the substrate, and the conductive material layer is patterned to form a first metal trace and a second metal trace; the orthographic projections of the first metal trace and the second metal trace on the substrate do not overlap with each other, the second metal trace is electrically connected to the first isolation structure, and the orthographic projection of the second metal trace on the substrate overlaps with the orthographic projection of the first isolation structure on the substrate.

16. A display device, characterized in that: A display panel comprising any one of claims 1 to 11.

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