Display panel, manufacturing method and display device

Abstract

The invention discloses a display panel, a manufacturing method and a display device. The display panel includes: a substrate; the active layer is arranged on the substrate; the gate insulation combination is arranged on the active layer; the interlayer dielectric layer is arranged on the gate insulation combination and provided with a first via hole penetrating through the gate insulation combination to expose the active layer; the first metal layer is arranged on the interlayer dielectric layer and is deposited in the first via hole; the first flat layer covers the first metal layer and the interlayer dielectric layer and is provided with a second via hole to expose the first metal layer; the second metal layer is arranged on the first flat layer and is deposited in the second via hole; the electrode insulation combination is arranged on the second metal layer; the second flat layer is arranged on the electrode insulation combination and is provided with a third via hole penetrating through the electrode insulation combination to expose the second metal layer; and the pixel anode layer is arranged on the second flat layer and is deposited in the third via hole. The pixel anode layer and the second metal layer are connected through direct opening, and the problem that the contact impedance is increased due to connection of the pixel anode layer and the electrode wire is avoided.

Description

Technical Field

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

[0002] At present, a larger screen-to-body ratio has become one of the future development trends, namely full-screen technology; to achieve a full screen, under-screen camera technology is one of its key factors, hereinafter referred to as CUP (Camera under Panel) technology. At present, its mainstream technology is to use transparent PI (organic material, flexible panel substrate) plus transparent electrode wiring to improve light transmittance and optimize the imaging effect; through transparent electrode wiring, the AA (Active Area) area TFT (ThinFilm Transistor) drives the CUP area pixels; its disadvantage is that the AA area anode Anode (pixel anode layer) and the SD (Source / Drain) metal below are connected through two layers of transparent electrode ITO (Indium Tin Oxide) (Fig. 1). Since the ITO metal itself is unstable and has a large resistance value, the contact impedance between the Anode and the SD will increase, affecting the EL luminous efficiency and display effect. Summary of the invention

[0003] The embodiments of the present application provide a display panel, a manufacturing method and a display device, which directly connect the pixel anode layer and the second metal layer by opening a hole in the second flat layer and the electrode insulation combination, thereby avoiding the problem of increased contact impedance due to the connection between the Anode and ITO.

[0004] In a first aspect, an embodiment of the present application provides a display panel, including:

[0005] substrate;

[0006] An active layer is disposed on the substrate;

[0007] A gate insulating assembly is provided on the active layer and the substrate;

[0008] An interlayer dielectric layer is disposed on the gate insulating assembly, wherein the interlayer dielectric layer is provided with a first via hole, and the first via hole penetrates the gate insulating assembly to expose a portion of the active layer;

[0009] A first metal layer is disposed on the interlayer dielectric layer, and the first metal layer is deposited in the first via hole and contacts the active layer;

[0010] a first planar layer, wherein the first planar layer covers the first metal layer and the interlayer dielectric layer, the first planar layer is provided with a second via hole, and the second via hole exposes a portion of the first metal layer;

[0011] A second metal layer is disposed on the first planar layer, and the second metal layer is deposited in the second via hole and contacts the first metal layer;

[0012] an electrode insulation assembly, disposed on the second metal layer and the first flat layer;

[0013] A second flat layer is disposed on the electrode insulation assembly, the second flat layer is provided with a third via hole, and the third via hole penetrates the electrode insulation assembly to expose a portion of the second metal layer;

[0014] A pixel anode layer is disposed on the second planar layer, and the pixel anode layer is deposited in the third via hole and contacts the second metal layer.

[0015] In some embodiments, the gate insulation combination includes:

[0016] a first gate insulating layer, wherein the first gate insulating layer covers the active layer and the substrate;

[0017] A first gate layer, disposed on the first gate insulating layer;

[0018] a second gate insulating layer, the second gate insulating layer covering the first gate layer and the first gate insulating layer;

[0019] A second gate layer, disposed on the first gate insulating layer;

[0020] The interlayer dielectric layer covers the second gate layer and the second gate insulating layer, and the first via hole penetrates the first gate insulating layer and the second gate insulating layer to expose a portion of the active layer.

[0021] In some embodiments, the active layer includes a channel region and conductor regions disposed on both sides of the channel region, the first gate layer is disposed opposite to the channel region, and the first metal layer is in contact with the conductor regions on both sides.

[0022] In some embodiments, the electrode insulation combination includes:

[0023] a first electrode insulating layer, wherein the first electrode insulating layer covers the second metal layer and the first planar layer;

[0024] A first electrode layer, disposed on the first electrode insulating layer;

[0025] a second electrode insulating layer, the second electrode insulating layer covering the first electrode layer and the first electrode insulating layer, the second electrode insulating layer being provided with a fourth via hole, and the fourth via hole penetrating the first electrode layer and the first electrode insulating layer exposing a portion of the second metal layer;

[0026] A second electrode layer is disposed on the first electrode insulating layer, and the second electrode layer is deposited in the fourth via hole and contacts the second metal layer;

[0027] The second planar layer covers the second electrode layer and the second electrode insulating layer, and the third via hole penetrates the first electrode insulating layer and the second electrode insulating layer to expose a portion of the second metal layer.

[0028] In some embodiments, the display panel further comprises:

[0029] a pixel definition layer, wherein the pixel definition layer covers the second planar layer and the pixel anode layer, the pixel definition layer is provided with a fifth via hole, and the fifth via hole exposes a portion of the pixel anode layer;

[0030] The supporting layer is arranged on the pixel definition layer.

[0031] In some embodiments, the substrate comprises:

[0032] substrate layer;

[0033] A buffer layer is disposed on the substrate layer, and the active layer and the gate insulation combination are disposed on the buffer layer.

[0034] In a second aspect, the present application provides a method for manufacturing a display panel, comprising:

[0035] Providing a substrate, and preparing an active layer on the substrate;

[0036] preparing a gate insulating assembly on the substrate and the active layer;

[0037] Depositing an interlayer dielectric layer on the gate insulating assembly, and etching a first via hole on the interlayer dielectric layer, wherein the first via hole penetrates the gate insulating assembly to expose a portion of the active layer;

[0038] Depositing a first metal layer on the interlayer dielectric layer, wherein the first metal layer is deposited in the first via hole and contacts the active layer;

[0039] Depositing a first planar layer on the first metal layer and the interlayer dielectric layer, and etching a second via hole on the first planar layer, wherein the second via hole exposes a portion of the first metal layer;

[0040] Depositing a second metal layer on the first planar layer, wherein the second metal layer is deposited in the second via hole and contacts the first metal layer;

[0041] preparing an electrode-insulation combination on the second metal layer and the first planar layer;

[0042] Depositing a second planar layer on the electrode-insulating assembly, and etching a third via hole on the second planar layer, wherein the third via hole penetrates the electrode-insulating assembly to expose a portion of the second metal layer;

[0043] A pixel anode layer is deposited on the second planar layer, and the pixel anode layer is deposited in the third via hole and contacts the second metal layer.

[0044] In one embodiment, preparing an electrode insulation assembly on the second metal layer and the first planar layer comprises:

[0045] depositing a first electrode insulating layer on the second metal layer and the first planar layer;

[0046] depositing a first electrode layer on the first electrode insulating layer;

[0047] Depositing a second electrode insulating layer on the first electrode layer and the first electrode insulating layer, and etching a fourth via hole on the second electrode insulating layer, wherein the fourth via hole penetrates the first electrode layer and the first electrode insulating layer and exposes a portion of the second metal layer;

[0048] A second electrode layer is deposited on the second electrode insulating layer, and the second electrode layer is deposited in the fourth via hole and contacts the second metal layer.

[0049] In one embodiment, it further includes:

[0050] Depositing a pixel definition layer on the second planar layer and the pixel anode layer, and etching a fifth via hole on the pixel definition layer, wherein the fifth via hole exposes a portion of the pixel anode layer;

[0051] A supporting layer is prepared on the pixel definition layer.

[0052] In one embodiment, the step of preparing a gate insulating assembly on the substrate and the active layer comprises:

[0053] depositing a first gate insulating layer on the active layer and the substrate;

[0054] Depositing metal on the first gate insulating layer as a first gate layer, and etching a pattern;

[0055] depositing a second gate insulating layer on the first gate layer and the first gate insulating layer;

[0056] A metal is deposited on the first gate insulating layer as a second gate layer, and a pattern is etched out.

[0057] In a third aspect, the present application provides a display device, comprising a display panel as described above.

[0058] The display panel, manufacturing method and display device provided in the embodiments of the present application directly connect the pixel anode layer and the second metal layer by opening a hole in the second flat layer and the electrode insulation combination, thereby avoiding the problem of increased contact impedance due to the connection between the Anode and ITO. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0060] Figure 1 is a schematic diagram of a structural cross-section of a display panel in an embodiment of the present application;

[0061] Figure 2 is a schematic structural cross-sectional diagram of a display panel in another embodiment of the present application;

[0062] Figure 3 is a schematic structural cross-sectional diagram of a display panel in another embodiment of the present application;

[0063] Figure 4 is a schematic structural cross-sectional diagram of a display panel in another embodiment of the present application;

[0064] Figure 5 It is a schematic structural cross-sectional diagram of a display panel in another embodiment of the present application.

[0065] Figure Number:

[0066] 1. Substrate; 11. Underlying layer; 12. Buffer layer; 2. Active layer; 21. Channel region; 22. Conductor region; 3. Gate insulation combination; 31. First gate insulation layer; 32. First gate layer; 33. Second gate insulation layer; 34. Second gate layer; 4. Interlayer dielectric layer; 41. First via hole; 5. First metal layer; 6. First flat layer; 61. Second via hole; 7. Second metal layer; 8. Electrode insulation combination; 81. First electrode insulation layer; 82. First electrode layer; 83. Second electrode insulation layer; 831. Fourth via hole; 84. Second electrode layer; 9. Second flat layer; 91. Third via hole; 10. Pixel anode layer; 110. Pixel definition layer; 111. Fifth via hole; 120. Support layer. DETAILED DESCRIPTION

[0067] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0068] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0069] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0070] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0071] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0072] See also Figure 1 An embodiment of the present application provides a display panel, which includes a substrate 1, an active layer 2, a gate insulation combination 3, an interlayer dielectric layer 4, a first metal layer 5, a first planar layer 6, a second metal layer 7, an electrode insulation combination 8, a second planar layer 9 and a pixel anode layer 10 in sequence.

[0073] The active layer 2 is disposed on the substrate 1, but the active layer 2 only occupies a part of the substrate 1, so a gate insulating assembly 3 is prepared on the side of the active layer 2 away from the substrate 1, and the gate insulating assembly 3 covers both the substrate 1 and the active layer 2. The gate insulating assembly 3 includes at least one gate layer and one gate insulating layer.

[0074] The interlayer dielectric layer 4 is disposed on the gate insulating combination 3, so the interlayer dielectric layer 4 (ILD) is deposited on the side of the gate insulating combination 3 away from the substrate 1. In order to perform data communication and driving, the active layer 2 needs to be connected to the outside, so the interlayer dielectric layer 4 is provided with a first via 41, and the first via 41 penetrates the gate insulating combination 3 to expose a part of the active layer 2 so that the active layer 2 can be connected to other metal electrodes. The first metal layer 5 (SD1) is disposed on the interlayer dielectric layer 4, so the first metal layer 5 is deposited on the side of the interlayer dielectric layer 4 away from the substrate 1, and the first metal layer 5 is deposited in the first via 41 to contact the active layer 2. The first metal layer 5 is the Source Drain metal layer of the TFT device, and is used to make data line, VddLine and STV signal routing.

[0075] The first metal layer 5 only occupies a part of the interlayer dielectric layer 4, so a first planarization layer 6 (Planarization Layer 1, PLN1) is deposited on the side of the first metal layer 5 and the interlayer dielectric layer 4 away from the substrate 1. The first planarization layer 6 covers both the first metal layer 5 and the interlayer dielectric layer 4. The first planarization layer 6 is a dielectric layer between SD1 and SD2, and flattens the surface of SD1. In addition, in order to perform data communication and driving, the first metal layer 5 needs to be connected to the outside, so the first planarization layer 6 is provided with a second via 61, and the second via 61 exposes a part of the first metal layer 5 so that the first metal layer 5 can be connected to other metal electrodes.

[0076] The second metal layer 7 (SD2) is disposed on the first flat layer 6, so the second metal layer 7 is deposited on the side of the first flat layer 6 away from the substrate 1, and at the same time, the second metal layer 7 is deposited in the second via 61 and contacts the first metal layer 5, and the second metal layer 7 makes Vdd into a mesh structure to make it more uniform. The second metal layer 7 is electrically connected to the first metal layer 5 through the second via 61 to form a double-layer wiring structure. After any one of the first metal layer 5 and the second metal layer 7 is broken, the other metal layer can still maintain signal transmission, reducing the risk of signal transmission failure caused by the signal wiring being broken due to long-term bending, thereby improving the yield of the display panel.

[0077] The second metal layer 7 only occupies a part of the first flat layer 6, so an electrode-insulation assembly 8 is prepared on the side of the second metal layer 7 away from the substrate 1, and the electrode-insulation assembly 8 covers both the second metal layer 7 and the first flat layer 6. The electrode-insulation assembly 8 includes at least one electrode layer and an electrode-insulation layer.

[0078] The second planarization layer 9 (Planarization Layer 2, PLN2) is provided on the electrode insulation combination 8, so the second planarization layer 9 is deposited on the side of the electrode insulation combination 8 away from the substrate 1. The second planarization layer 9 is a dielectric layer between SD2 and Anode, which flattens the surface of SD2. In addition, in order to carry out data communication and driving, the second metal layer 7 needs to be connected to the outside. The second planarization layer 9 is provided with a third via 91, and the third via 91 penetrates the electrode insulation combination 8 to expose a part of the second metal layer 7, so that the second metal layer 7 is connected to other metal electrodes. The pixel anode layer 10 (Anode) is provided on the second planarization layer 9, so the pixel anode layer 10 is deposited on the second planarization layer 9, and the pixel anode layer 10 is deposited in the third via 91 and contacts the second metal layer 7. The pixel anode layer 10 makes an anode wiring, and the pixel anode layer 10 contacts the second metal layer 7 through the third via 91, so that the driving signal is connected.

[0079] In this embodiment, the pixel anode layer 10 is connected to the second metal layer 7 by directly opening holes in the second flat layer 9 and the electrode insulation assembly 8, thereby avoiding the problem of increased contact impedance due to the connection between the Anode and ITO, and improving the luminous efficiency without affecting the transparent electrode routing. The SD2 Pad area can be increased to facilitate the overlap of the pixel anode layer 10.

[0080] In one embodiment, the gate insulation assembly 3 includes a first gate insulation layer 31 (Gate Insulator 1, GI1), a first gate layer 32 (Gate Metal 1, GE1), a second gate insulation layer 33 (Gate Insulator2, GI2) and a second gate layer 34 (Gate Metal 2, GE2). The first gate layer 32 is a gate for the TFT device switch and is also a Scan and EM signal routing. The second gate layer 34 is arranged opposite to the first gate layer 32 to form a capacitor and is also a Vi signal routing.

[0081] Since the active layer 2 only occupies a part of the substrate 1, a first gate insulating layer 31 is prepared on the side of the active layer 2 away from the substrate 1, and the first gate insulating layer 31 covers both the substrate 1 and the active layer 2. A layer of metal is deposited on the first gate insulating layer 31 as a first gate layer 32, and a pattern is etched.

[0082] The first gate layer 32 only occupies a part of the first gate insulating layer 31, so a second gate insulating layer 33 is prepared on the side of the first gate layer 32 away from the substrate 1, and the second gate insulating layer 33 covers both the first gate insulating layer 31 and the first gate layer 32. A layer of metal is deposited on the second gate insulating layer 33 as the second gate layer 34, and a pattern is etched.

[0083] The second gate layer 34 only occupies a partial area of ​​the second gate insulating layer 33, so an interlayer dielectric layer 4 is prepared on the side of the second gate layer 34 away from the substrate 1, and the interlayer dielectric layer 4 covers both the second gate insulating layer 33 and the second gate layer 34. The first via 41 on the interlayer dielectric layer 4 penetrates the first gate insulating layer 31 and the second gate insulating layer 33 to expose a portion of the active layer 2, so that the active layer 2 is connected to the first metal layer 5.

[0084] In one embodiment, the active layer 2 includes a channel region 21 and conductor regions 22 disposed on both sides of the channel region 21, a first gate layer 32 is disposed opposite to the channel region 21, and a second gate layer 34 is disposed opposite to the first gate layer 32, so the channel region 21, the first gate layer 32 and the second gate layer 34 are disposed opposite to each other in sequence. A first via 41 is disposed above the conductor regions 22 on both sides, and a first metal layer 5 is deposited in the first via 41 and contacts the conductor regions 22 on both sides respectively to achieve signal transmission.

[0085] In one embodiment, the electrode insulation combination 8 includes a first electrode insulation layer 81 (PV1), a first electrode layer 82 (ITO1), a second electrode insulation layer 83 (PV2) and a second electrode layer 84 (ITO2). The first electrode insulation layer 81 is an insulation layer between the second metal layer 7 and the first electrode layer 82, and the second electrode insulation layer 83 is an insulation layer between the first electrode layer 82 and the second electrode layer 84. The first electrode insulation layer 81 and the second electrode insulation layer 83 can be non-metallic films or organic films, including but not limited to one of PMDS, PEN, PI, PEI, PET, and PPS materials. However, since organic films reduce the transmittance of visible light, non-metallic film layers with high transmittance are usually used to make the first electrode insulation layer 81. The first electrode layer 82 and the second electrode layer 84 are transparent electrodes used as CUP area wiring. The transparent electrode material can use any one of ITO, IGZO, IZO, and IGZTO, which is not specifically limited in this embodiment.

[0086] The second metal layer 7 only occupies a part of the first planar layer 6, so the first electrode insulating layer 81 is deposited on the side of the second metal layer 7 away from the substrate 1, and the first electrode insulating layer 81 covers both the second metal layer 7 and the first planar layer 6. Figure 2 As shown, a first electrode layer 82 is deposited on the first electrode insulating layer 81. Similarly, as shown in FIG. Figure 3 As shown, since the first electrode layer 82 only occupies a part of the first electrode insulating layer 81, the second electrode insulating layer 83 is deposited on the side of the first electrode layer 82 away from the substrate 1, and the second electrode insulating layer 83 covers both the first electrode layer 82 and the first electrode insulating layer 81. Then, the fourth via hole 831 on the second electrode insulating layer 83 is etched through the first electrode insulating layer 81 and the first electrode layer 82 by exposure and etching technology, and the fourth via hole 831 exposes a part of the second metal layer 7, that is, the first electrode insulating layer 81 does not need to be patterned, and the second electrode insulating layer 83 can be used to make the fourth via hole 831 in the post-process, thereby achieving the purpose of saving light. Figure 4 As shown, the second electrode layer 84 is deposited on the second electrode insulating layer 83, and the second electrode layer 84 is deposited in the fourth via hole 831. The second electrode layer 84 is in contact with the second metal layer 7 and the first electrode layer 82 at the same time, that is, the fourth via hole 831 is used to connect the second metal layer 7 with the transparent electrode first electrode layer 82 and the second electrode layer 84.

[0087] In addition, if Figure 5As shown, the second flat layer 9 is disposed on the electrode insulation combination 8, that is, the second flat layer 9 is disposed on the second electrode layer 84. Since the second electrode layer 84 only occupies a portion of the second electrode insulation layer 83, the second flat layer 9 is deposited on the side of the second electrode layer 84 away from the substrate 1, and the second flat layer 9 covers both the second electrode layer 84 and the second electrode insulation layer 83. The second flat layer 9 is provided with a third via hole 91, and the third via hole 91 penetrates the first electrode insulation layer 81 and the second electrode insulation layer 83 to expose a portion of the second metal layer 7. The pixel anode layer 10 is deposited in the third via hole 91 and communicates with the second metal layer 7.

[0088] In this embodiment, it is not necessary to open a hole in the first electrode insulating layer 81, but a fourth via hole 831 is directly opened on the second electrode insulating layer 83 to penetrate the first electrode layer 82 and the first electrode insulating layer 81, so as to realize the connection between the second metal layer 7 and the first electrode layer 82 and the second electrode layer 84, simplify the process steps, and improve the production cycle. At the same time, a third via hole 91 is opened on the second electrode insulating layer 83 to penetrate the first electrode insulating layer 81 and the second electrode insulating layer 83, so as to realize the connection between the second metal layer 7 and the pixel anode layer 10. Among them, the third via hole 91 and the fourth via hole 831 do not interfere with each other. At the same time, in order to realize that the two via holes opened on the second electrode insulating layer 83 are connected to the second metal layer 7, the area of ​​the second metal layer 7 can be increased as needed.

[0089] In one embodiment, the display panel further includes a pixel definition layer 110 (Pixel Define Layer, PDL) and a support layer 120 (Photo Spacer, PS). Since the pixel anode layer 10 only occupies a portion of the second planar layer 9, the pixel definition layer 110 is deposited on the side of the pixel anode layer 10 away from the substrate 1, and the second electrode insulating layer 83 covers both the pixel anode layer 10 and the second planar layer 9. In addition, a fifth via hole 111 is etched on the pixel definition layer 110, and the fifth via hole 111 exposes a portion of the pixel anode layer 10 so that the pixel anode layer 10 is connected to other electrodes. A support layer 120 is also provided on the pixel definition layer 110, and the support layer 120 is formed by patterning the reserved area of ​​the pixel definition layer 110. In addition, the pixel definition layer 110 and the support layer 120 can be made in one layer using the Halftone process.

[0090] In one embodiment, the substrate 1 includes a substrate layer 11 and a buffer layer 12 (Buffer), the substrate layer 11 is a flexible panel substrate, and can be an organic material PI (Polyimide, polyimide) and the like, which is not specifically limited in this embodiment. The buffer layer 12 is disposed on the substrate layer 11, and the active layer 2 and the gate insulation combination 3 are disposed on the buffer layer 12.

[0091] In this embodiment, the pixel anode layer 10 and the second metal layer 7 are connected by directly opening holes in the second flat layer 9 and the electrode insulation combination 8, thereby avoiding the problem of increased contact impedance due to the connection between the Anode and ITO, and improving the luminous efficiency without affecting the transparent electrode routing. In addition, there is no need to open holes in the first electrode insulation layer 81, but directly open a fourth via 831 on the second electrode insulation layer 83 to penetrate the first electrode layer 82 and the first electrode insulation layer 81, so as to achieve the connection between the second metal layer 7 and the first electrode layer 82 and the second electrode layer 84, simplifying the process steps and improving the production cycle.

[0092] See also Figures 1 to 5 , an embodiment of the present application provides a method for manufacturing a display panel, the method comprising:

[0093] Providing a substrate 1, and preparing an active layer 2 on the substrate 1;

[0094] Preparing a gate insulating assembly 3 on the substrate 1 and the active layer 2;

[0095] Depositing an interlayer dielectric layer 4 on the gate insulating assembly 3, and etching a first via hole 41 on the interlayer dielectric layer 4, wherein the first via hole 41 penetrates the gate insulating assembly 3 to expose a portion of the active layer 2;

[0096] Depositing a first metal layer 5 on the interlayer dielectric layer 4, and the first metal layer 5 is deposited in the first via hole 41 to contact the active layer 2;

[0097] Depositing a first planarization layer 6 on the first metal layer 5 and the interlayer dielectric layer 4, and etching a second via hole 61 on the first planarization layer 6, wherein the second via hole 61 exposes a portion of the first metal layer 5;

[0098] Depositing a second metal layer 7 on the first planar layer 6, and the second metal layer 7 is deposited in the second via hole 61 and contacts the first metal layer 5;

[0099] preparing an electrode insulation assembly 8 on the second metal layer 7 and the first planar layer 6;

[0100] Depositing a second planar layer 9 on the electrode insulation assembly 8, and etching a third via hole 91 on the second planar layer 9, wherein the third via hole 91 penetrates the electrode insulation assembly 8 to expose a portion of the second metal layer 7;

[0101] A pixel anode layer 10 is deposited on the second planar layer 9 , and the pixel anode layer 10 is deposited in the third via hole 91 to contact the second metal layer 7 .

[0102] In one embodiment, the step of preparing the electrode insulation assembly 8 on the second metal layer 7 and the first planar layer 6 comprises:

[0103] Depositing a first electrode insulating layer 81 on the second metal layer 7 and the first planar layer 6;

[0104] Depositing a first electrode layer 82 on the first electrode insulating layer 81;

[0105] Depositing a second electrode insulating layer 83 on the first electrode layer 82 and the first electrode insulating layer 81, and etching a fourth via hole 831 on the second electrode insulating layer 83, wherein the fourth via hole 831 penetrates the first electrode layer 82 and the first electrode insulating layer 81 and exposes a portion of the second metal layer 7;

[0106] The second electrode layer 84 is deposited on the second electrode insulating layer 83 . The second electrode layer 84 is deposited in the fourth via hole 831 and contacts the second metal layer 7 .

[0107] In one embodiment, it further includes:

[0108] Depositing a pixel definition layer 110 on the second planar layer 9 and the pixel anode layer 10, and etching a fifth via hole 111 on the pixel definition layer 110, wherein the fifth via hole 111 exposes a portion of the pixel anode layer 10;

[0109] A support layer 120 is prepared on the pixel definition layer 110 .

[0110] In one embodiment, the step of preparing a gate insulating assembly 3 on the substrate 1 and the active layer 2 includes:

[0111] Depositing a first gate insulating layer 31 on the active layer 2 and the substrate 1;

[0112] Depositing metal on the first gate insulating layer 31 as a first gate layer 32, and etching a pattern;

[0113] Depositing a second gate insulating layer 33 on the first gate layer 32 and the first gate insulating layer 31;

[0114] A metal is deposited on the first gate insulating layer 31 as the second gate layer 34 , and a pattern is etched out.

[0115] An embodiment of the present application provides a display device, which includes the display panel described in any of the above embodiments.

[0116] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0117] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0118] The above is a detailed introduction to a display panel, a manufacturing method and a display device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A display panel, characterized in that: include: substrate; An active layer, disposed on the substrate; A gate insulating assembly is provided on the active layer and the substrate; An interlayer dielectric layer is disposed on the gate insulating assembly, wherein the interlayer dielectric layer is provided with a first via hole, and the first via hole penetrates the gate insulating assembly to expose a portion of the active layer; A first metal layer is disposed on the interlayer dielectric layer, and the first metal layer is deposited in the first via hole and contacts the active layer; a first planar layer, wherein the first planar layer covers the first metal layer and the interlayer dielectric layer, the first planar layer is provided with a second via hole, and the second via hole exposes a portion of the first metal layer; a second metal layer, disposed on the first planar layer, and the second metal layer is deposited in the second via hole and contacts the first metal layer; an electrode insulation assembly, disposed on the second metal layer and the first flat layer; A second flat layer is disposed on the electrode insulation assembly, the second flat layer is provided with a third via hole, and the third via hole penetrates the electrode insulation assembly to expose a portion of the second metal layer; a pixel anode layer, disposed on the second planar layer, and the pixel anode layer is deposited in the third via hole and contacts the second metal layer; The electrode insulation combination comprises: a first electrode insulating layer, wherein the first electrode insulating layer covers the second metal layer and the first planar layer; A first electrode layer, disposed on the first electrode insulating layer; The second planar layer covers the first electrode layer and the first electrode insulating layer, and the third via hole penetrates the first electrode insulating layer to expose a portion of the second metal layer; The first electrode layer is any one of ITO, IGZO, IZO and IGZTO.

2. The display panel according to claim 1, wherein: The electrode insulation combination also includes: a second electrode insulating layer, the second electrode insulating layer covering the first electrode layer and the first electrode insulating layer, the second electrode insulating layer being provided with a fourth via hole, and the fourth via hole penetrating the first electrode layer and the first electrode insulating layer exposing a portion of the second metal layer; A second electrode layer is provided on the second electrode insulating layer, and the second electrode layer is deposited in the fourth via hole and contacts the second metal layer; The second planar layer covers the second electrode layer and the second electrode insulating layer, and the third via hole penetrates the first electrode insulating layer and the second electrode insulating layer to expose a portion of the second metal layer; The second electrode layer is any one of ITO, IGZO, IZO and IGZTO.

3. The display panel according to claim 2, wherein: The first electrode insulating layer and the second electrode insulating layer include a non-metallic film or an organic film.

4. The display panel according to claim 2, wherein: The first electrode and the second electrode are located in the under-screen camera area.

5. The display panel according to claim 4, wherein: The first electrode and the second electrode are used as routing lines for the under-screen camera area.

6. The display panel according to claim 1, wherein: An area of ​​the second metal layer is greater than an area of ​​the first metal layer in contact with the second metal layer.

7. The display panel according to claim 1, wherein: The gate insulation combination comprises: a first gate insulating layer, wherein the first gate insulating layer covers the active layer and the substrate; A first gate layer, disposed on the first gate insulating layer; a second gate insulating layer, the second gate insulating layer covering the first gate layer and the first gate insulating layer; A second gate layer, disposed on the first gate insulating layer; The interlayer dielectric layer covers the second gate layer and the second gate insulating layer, and the first via hole penetrates the first gate insulating layer and the second gate insulating layer to expose a portion of the active layer.

8. A method for manufacturing a display panel, characterized in that: include: Providing a substrate, and preparing an active layer on the substrate; preparing a gate insulating assembly on the substrate and the active layer; Depositing an interlayer dielectric layer on the gate insulation assembly, and etching a first via hole on the interlayer dielectric layer, wherein the first via hole penetrates the gate insulation assembly to expose a portion of the active layer; Depositing a first metal layer on the interlayer dielectric layer, wherein the first metal layer is deposited in the first via hole and contacts the active layer; Depositing a first planar layer on the first metal layer and the interlayer dielectric layer, and etching a second via hole on the first planar layer, wherein the second via hole exposes a portion of the first metal layer; Depositing a second metal layer on the first planar layer, wherein the second metal layer is deposited in the second via hole and contacts the first metal layer; preparing an electrode-insulation combination on the second metal layer and the first planar layer; Depositing a second planar layer on the electrode-insulating assembly, and etching a third via hole on the second planar layer, wherein the third via hole penetrates the electrode-insulating assembly to expose a portion of the second metal layer; Depositing a pixel anode layer on the second planar layer, wherein the pixel anode layer is deposited in the third via hole and contacts the second metal layer; The step of preparing an electrode insulation assembly on the second metal layer and the first flat layer specifically includes: depositing a first electrode insulating layer on the second metal layer and the first planar layer; A first electrode layer is deposited on the first electrode insulating layer.

9. The method for manufacturing a display panel according to claim 8, wherein: The step of preparing an electrode insulation assembly on the second metal layer and the first flat layer further includes: Depositing a second electrode insulating layer on the first electrode layer and the first electrode insulating layer, and etching a fourth via hole on the second electrode insulating layer, wherein the fourth via hole penetrates the first electrode layer and the first electrode insulating layer and exposes a portion of the second metal layer; A second electrode layer is deposited on the second electrode insulating layer, and the second electrode layer is deposited in the fourth via hole and contacts the second metal layer.

10. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 7.

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