Display panel, manufacturing method of display panel, and electronic device

Abstract

The embodiment of the present application provides a display panel, a manufacturing method of the display panel and electronic equipment, relates to the technical field of display equipment, and is used for solving the technical problem that the etching residue of black organic glue left on the first electrode influences the light-emitting efficiency of the light-emitting layer in the prior art. The display panel comprises a planarization layer, a first electrode, a pixel definition layer, a light-emitting layer and a transfer electrode located between the light-emitting layer and the first electrode; one side of the transfer electrode close to the planarization layer is in direct contact with the first electrode, or the transfer electrode is in contact with the first electrode through a through hole penetrating through the pixel definition layer; and the side of the transfer electrode away from the planarization layer is in contact with the light-emitting layer. By arranging the transfer electrode in electrical contact with the first electrode, the conductivity between the first electrode and the corresponding light-emitting layer can be improved, so that the light-emitting efficiency of the corresponding light-emitting layer can be improved.

Description

Technical Field

[0001] This application relates to the field of display device technology, and more specifically, to a display panel, a method for manufacturing the display panel, and an electronic device. Background Technology

[0002] Due to the unique stacking structure of display panels, some metal traces within the panel may reflect external light when the screen is off, affecting the user experience. Therefore, some display panels use black organic adhesive as a pixel delimiter to prevent reflections from the metal traces.

[0003] However, the pixel-defining layer formed by the black organic adhesive has certain defects. Summary of the Invention

[0004] To overcome the technical problems mentioned in the background, this application provides a display panel, which includes:

[0005] Planarization layer;

[0006] The first electrode is located on one side of the planarization layer;

[0007] A pixel defining layer located on the side of the first electrode away from the planarization layer;

[0008] A light-emitting layer located on the side of the first electrode away from the planarization layer;

[0009] An intermediate electrode is located between the light-emitting layer and the first electrode; the side of the intermediate electrode closest to the planarization layer is in direct contact with the first electrode, or the intermediate electrode is in contact with the first electrode through a through-hole penetrating the pixel defining layer; the side of the intermediate electrode furthest from the planarization layer is in contact with the light-emitting layer.

[0010] By setting a transfer electrode that is electrically in contact with the first electrode between the light-emitting layer and the first electrode, and having the side of the transfer electrode away from the planarization layer in contact with the light-emitting layer, the conductivity between the first electrode and the corresponding light-emitting layer can be improved, thereby improving the luminous efficiency of the corresponding light-emitting layer.

[0011] In one possible implementation, the pixel defining layer includes a pixel opening that exposes the first electrode, with at least a portion of the light-emitting layer and the relay electrode located within the pixel opening.

[0012] By setting a transfer electrode that is in electrical contact with the first electrode at the pixel opening, the conductivity between the first electrode and the corresponding light-emitting layer can be improved.

[0013] In one possible implementation, the orthographic projection of the area exposed by the first electrode through the pixel opening onto the planarization layer lies within the orthographic projection of the intermediate electrode onto the planarization layer.

[0014] By covering the area exposed by the pixel opening of the first electrode with the intermediate electrode, the display quality of the display panel can be improved.

[0015] In one possible implementation, at least a portion of the transfer electrode is located on the side of the pixel defining layer away from the first electrode, and the transfer electrode extends through a via in the pixel defining layer to make electrical contact with the first electrode.

[0016] Preferably, the pixel defining layer is a single, continuous layer.

[0017] By providing a transfer electrode that is electrically in contact with the first electrode on the side of the pixel defining layer away from the first electrode, the conductivity between the first electrode and the corresponding light-emitting layer can be improved.

[0018] In one possible implementation, a contact hole is provided on the surface of the first electrode near the transfer electrode, and the transfer electrode extends into the contact hole to make electrical contact with the first electrode.

[0019] Preferably, the contact hole is a blind hole.

[0020] By extending the transfer electrode into the contact hole, it can be ensured that the transfer electrode can make effective electrical contact with the first electrode.

[0021] In one possible implementation, the number of contact holes is multiple.

[0022] This can further increase the electrical contact area between the transfer electrode and the first electrode.

[0023] In one possible implementation, the transfer electrodes corresponding to at least two different colored sub-pixels have different thicknesses, and / or the orthogonal projection areas of the transfer electrodes corresponding to at least two different colored sub-pixels on the planarization layer are different.

[0024] The capacitance between the green sub-pixel and the red sub-pixel can be balanced, thereby improving the problems of ghosting and color cast between the green sub-pixel and the red sub-pixel.

[0025] In one possible implementation, the material of the transfer electrode includes a titanium-aluminum-titanium trilayer alloy.

[0026] This makes the transfer electrode not only have good conductivity, but also lower manufacturing costs, making it more suitable for mass production.

[0027] In one possible implementation, this application provides another method for manufacturing a display panel, the method comprising:

[0028] Multiple array functional film layers are sequentially formed on a substrate, the array functional film layers including a planarization layer on the side away from the substrate;

[0029] A first electrode is formed on the side of the planarization layer away from the substrate;

[0030] A pixel defining layer, a transfer electrode, and a light-emitting layer are sequentially formed on the side of the first electrode away from the planarization layer;

[0031] The intermediate electrode is located between the light-emitting layer and the first electrode. The side of the intermediate electrode closest to the planarization layer is in direct contact with the first electrode, or the intermediate electrode is in contact with the first electrode through a through-hole penetrating the pixel defining layer. The side of the intermediate electrode furthest from the planarization layer is in contact with the light-emitting layer.

[0032] In one possible implementation, this application also provides an electronic device including the display panel described in this application.

[0033] Compared with the prior art, this application has at least the following beneficial effects:

[0034] This application provides a display panel, a method for manufacturing the display panel, and an electronic device. By providing a transfer electrode that is electrically in contact with the first electrode between the light-emitting layer and the first electrode, and having the side of the transfer electrode away from the planarization layer in contact with the light-emitting layer, the conductivity between the first electrode and the corresponding light-emitting layer can be improved, thereby improving the luminous efficiency of the corresponding light-emitting layer. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of a display panel in the prior art provided in this embodiment;

[0037] Figure 2 This is a schematic diagram of a display panel provided in this embodiment, in which the intermediate electrode is disposed at the pixel opening and the intermediate electrode is not embedded in the first electrode;

[0038] Figure 3This is a schematic diagram of another display panel provided in this embodiment, in which the intermediate electrode is disposed on one side of the pixel delimiting layer and the intermediate electrode is not embedded in the first electrode;

[0039] Figure 4 This is a schematic diagram of a display panel provided in this embodiment, in which the transfer electrode is disposed in the groove and the transfer electrode is not embedded in the first electrode;

[0040] Figure 5 This is a schematic diagram of a display panel provided in this embodiment, in which the transfer electrode is disposed at the pixel opening and the transfer electrode is embedded in the first electrode;

[0041] Figure 6 This is a schematic diagram of another display panel provided in this embodiment, in which the transfer electrode is disposed on one side of the pixel delimiting layer and the transfer electrode is embedded in the first electrode;

[0042] Figure 7 This is a schematic diagram of a display panel provided in this embodiment, in which the transfer electrode is disposed in the groove and embedded in the first electrode;

[0043] Figure 8 This is a top view of the display panel provided in this embodiment;

[0044] Figure 9 This is a flowchart illustrating a method for manufacturing a display panel as provided in this embodiment.

[0045] Figure label:

[0046] 1. Substrate; 2. Planarization layer; 3. First electrode; 4. Pixel defining layer; 5. Light emitting layer; 6. Pixel aperture; 7. Transfer electrode; 10. Display panel. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0048] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0049] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0050] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0051] It should be noted that, where there is no conflict, different features in the embodiments of this application can be combined with each other.

[0052] Please see Figure 1 and Figure 8 The display panel 10 typically includes multiple array functional film layers formed on a substrate 1, wherein the array functional film layers include a planarization layer 2. On the side of the planarization layer 2 away from the substrate 1, there is also a first electrode 3 (anode) and a pixel defining layer 4. The pixel defining layer 4 typically has a pixel opening 6 exposing the first electrode 3, and a light-emitting layer 5 is provided at the pixel opening 6. The light-emitting layer 5 is electrically connected to the first electrode 3.

[0053] In some display panels, such as COE (Color Filter On Encapsulation) products using color filters, black organic adhesive is used in the pixel defining layer 4 to reduce the risk of reflection from metal traces. However, after long-term research, the inventors discovered that when etching the pixel openings 6 on the pixel defining layer 4, the black organic adhesive easily leaves residue on the first electrode 3. The conductivity of the residual pixel defining layer 4 is much lower than that of the first electrode 3, thus affecting the conductivity between the first electrode 3 and the corresponding light-emitting layer 5, thereby affecting the luminous efficiency of the corresponding light-emitting layer 5.

[0054] In view of this, please see Figure 2 This embodiment provides a display panel, which includes: a planarization layer 2, a plurality of first electrodes 3, a pixel defining layer 4, a transfer electrode 7, and a light-emitting layer 5.

[0055] In this embodiment, the display panel may include a plurality of array functional film layers formed on a substrate 1, wherein the array functional film layers include a planarization layer 2.

[0056] A plurality of first electrodes 3 are disposed at intervals on one side of the planarization layer 2. The first electrodes 3 can be anodes, and a plurality of first electrodes 3 are disposed at intervals on the side of the planarization layer 2 away from the substrate 1.

[0057] The pixel defining layer 4 is located on the side of the first electrode 3 away from the planarization layer 2. The material of the pixel defining layer 4 may include black organic adhesive. By setting the pixel defining layer 4, the light reaching the metal trace can be reduced, thereby reducing the light reflected from the metal trace and thus reducing the viewing angle difference of the display panel.

[0058] The light-emitting layer 5 is located on the side of the first electrode 3 away from the planarization layer 2.

[0059] The intermediate electrode 7 is located between the light-emitting layer 5 and the first electrode 3. Please refer again. Figure 2 The transfer electrode 7, on the side closest to the planarization layer 2, is in direct contact with the first electrode 3. (See also...) Figure 3 Alternatively, the intermediate electrode 7 may contact the first electrode 3 through a through-hole penetrating the pixel defining layer 4. It is understood that the pixel defining layer 4 is a single, continuous layer.

[0060] Please see Figure 4 The pixel defining layer 4 has a groove on the side away from the planarization layer 2, and the groove corresponds to the first electrode 3. The intermediate electrode 7 is located in the groove and is electrically connected to the first electrode 3 through a through-hole penetrating the pixel defining layer 4. The side of the intermediate electrode 7 away from the planarization layer 2 contacts the light-emitting layer 5, and the side of the intermediate electrode 7 away from the planarization layer 2 can directly contact and be electrically connected to the light-emitting layer 5 to achieve an electrical connection between the light-emitting layer 5 and the first electrode 3.

[0061] Based on the above design, in the solution provided in this embodiment, by providing a transfer electrode 7 that is electrically in contact with the first electrode 3 between the light-emitting layer 5 and the first electrode 3, and by having the transfer electrode 7 in contact with the light-emitting layer 5 on the side away from the planarization layer 2, the influence of the etched pixel defining layer 4 on the electrical energy transfer between the first electrode 3 and the light-emitting layer 5 can be reduced, thereby improving the conductivity between the first electrode 3 and the corresponding light-emitting layer 5, and further improving the luminous efficiency of the corresponding light-emitting layer 5.

[0062] In one possible implementation, please see again Figure 2The pixel defining layer 4 includes a pixel opening 6 that exposes the first electrode, and at least a portion of the light-emitting layer 5 and the intermediate electrode 7 are located within the pixel opening 6. The pixel defining layer 4 includes a plurality of pixel openings 6 corresponding one-to-one with the plurality of first electrodes 3, and the plurality of pixel openings 6 respectively expose the plurality of first electrodes 3. The plurality of pixel openings 6 can define sub-pixels of different colors, such as red sub-pixels, green sub-pixels, and blue sub-pixels.

[0063] The intermediate electrode 7 can be located in the pixel opening 6. For example, in one possible implementation, the intermediate electrode 7 can be formed in the pixel opening 6 after etching the pixel defining layer 4, and the intermediate electrode 7 can be electrically contacted with the first electrode 3. In this way, by providing the intermediate electrode 7, which is electrically in contact with the first electrode 3, at the pixel opening 6, the conductivity between the first electrode 3 and the corresponding light-emitting layer 5 can be improved.

[0064] In one possible implementation, please see again Figure 2 The orthographic projection of the area of ​​the first electrode 3 exposed through the pixel opening 6 onto the planarization layer 2 lies within the orthographic projection of the intermediate electrode 7 onto the planarization layer 2.

[0065] Regarding the aforementioned display panel 10, a pixel opening 6 is provided on the pixel defining layer 4. If the intermediate electrode 7 cannot completely cover the area exposed by the first electrode 3 through the pixel opening 6, light from the corresponding light-emitting layer 5 may reach the first electrode 3 through the pixel opening 6 and then be reflected by the first electrode 3. This results in a difference in the reflections of the first electrode 3 and the intermediate electrode 7, thus affecting the display quality of the display panel. Therefore, by covering the area exposed by the first electrode 3 through the pixel opening 6 with the intermediate electrode 7, the display quality of the display panel 10 can be improved.

[0066] Preferably, the orthographic projection of the area of ​​the first electrode 3 exposed through the pixel opening 6 onto the planarization layer 2 coincides with the orthographic projection of the intermediate electrode 7 onto the planarization layer 2. The intermediate electrode 7 just covers the area of ​​the first electrode 3 exposed through the pixel opening 6. In this way, not only is the display efficiency of the corresponding display panel 10 not affected, but the intermediate electrode 7 can also be made too large, thereby reducing the manufacturing cost of the intermediate electrode 7.

[0067] In one possible implementation, please see again Figure 3At least a portion of the transfer electrode is located on the side of the pixel defining layer away from the first electrode, and the transfer electrode extends through a through-hole in the pixel defining layer to make electrical contact with the first electrode.

[0068] Since a pixel defining layer 4 exists between the first electrode 3 and the intermediate electrode 7, in order to achieve electrical contact between the intermediate electrode 7 and the first electrode 3, it is necessary to create through-holes at corresponding positions on the pixel defining layer 4 through etching or other processes, and then allow the extension portion of the intermediate electrode 7 to pass through the through-holes and make electrical contact with the first electrode 3. By setting the intermediate electrode 7, which is in electrical contact with the first electrode 3, on the side of the pixel defining layer 4 away from the first electrode 3, and by electrically connecting the light-emitting layer 5 to the intermediate electrode 7, the pixel defining layer 4 can be avoided from affecting the improvement of power transfer between the first electrode 3 and the corresponding light-emitting layer 5, thereby improving the luminous efficiency of the corresponding light-emitting layer 5.

[0069] Please see Figures 5-7 In one possible implementation, the surface of the first electrode 3 near the transfer electrode 7 is provided with a contact hole, and the transfer electrode 7 extends into the contact hole to make electrical contact with the first electrode 3.

[0070] In some examples, the contact hole can be a blind hole. When the contact hole is a blind hole, the difficulty of setting the contact hole can be reduced, and the corresponding manufacturing cost can be reduced. In other embodiments, the contact hole can be a through hole. When the contact hole is a through hole, the electrical contact area between the transfer electrode 7 and the first electrode 3 can be further increased, ensuring the effectiveness of the electrical contact.

[0071] Please see again Figure 5 Contact holes can be formed on the first electrode 3 through etching or other processes. The transfer electrode 7 can extend to the part of the contact hole and make electrical contact with the contact hole, so that the transfer electrode 7 extends into the contact hole and can effectively make electrical contact with the first electrode 3.

[0072] Please see again Figure 6 and Figure 7 Contact holes can be formed on the first electrode 3 through etching or other processes, allowing the extension portion of the transfer electrode 7 to extend further into the contact holes and make electrical contact with the inner wall of the contact holes. This further increases the electrical contact area between the transfer electrode 7 and the first electrode 3, thereby further improving the conductivity between the first electrode 3 and the corresponding light-emitting layer 5.

[0073] in, Figure 5The display panel shown requires a mask to set the corresponding pixel openings 6, and another mask to set the contact holes on the first electrode 3. Figure 7 The display panel shown requires a mask to be designed to set the corresponding grooves of the pixel defining layer 4, and another mask to be designed to set the contact holes on the first electrode 3. Figure 6 The display panel shown only requires one mask to create the through holes on the pixel defining layer 4 and the contact holes on the first electrode 3; that is, the through holes on the pixel defining layer 4 and the contact holes on the first electrode 3 can share a single mask. Thus, Figure 6 The display panel shown is larger than Figure 5 The display panel shown and Figure 7 The display panel shown has one less mask, which simplifies the design. Figure 6 The manufacturing process of the display panel shown can reduce the corresponding production costs.

[0074] In one possible implementation, there are multiple contact holes. The transfer electrode 7 extends into the multiple contact holes, thereby further increasing the electrical contact area between the transfer electrode 7 and the first electrode 3.

[0075] In one possible implementation, the transfer electrode 7 corresponding to at least two different colored sub-pixels has a different thickness, and / or the transfer electrode 7 corresponding to at least two different colored sub-pixels has a different projected area on the planarization layer 2.

[0076] The capacitance of sub-pixels of different colors differs; specifically, the capacitance of the green sub-pixel is greater than that of the red sub-pixel, and the capacitance of the red sub-pixel is greater than that of the green sub-pixel. This difference in capacitance between sub-pixels of different colors causes problems such as ghosting and color cast in the corresponding display panel.

[0077] Since the intermediate electrode 7 itself has a certain resistance, it also has a certain capacitance. The sum of the capacitance of the sub-pixel and the capacitance of the intermediate electrode 7 can be considered as the total capacitance at that sub-pixel. Thus, by designing intermediate electrodes 7 with different capacitances, the capacitance differences between sub-pixels of different colors can be balanced, thereby improving the problems of ghosting and color cast in the corresponding display panel. For example, the capacitance of the intermediate electrode 7 corresponding to the green sub-pixel can be designed to be smaller than the capacitance of the intermediate electrode 7 corresponding to the red sub-pixel. In this way, the sum of the capacitances of the green sub-pixel and its corresponding intermediate electrode 7 is close to the sum of the capacitances of the red sub-pixel and its corresponding intermediate electrode 7, thereby balancing the capacitance between the green and red sub-pixels and improving the ghosting and color cast problems between them.

[0078] Furthermore, the capacitance of the intermediate electrode 7 is related to the thickness of the intermediate electrode 7 and the size of its projected area on the planarization layer 2. With a fixed projected area on the planarization layer 2, the thinner the intermediate electrode 7, the larger its capacitance; conversely, with a fixed thickness, the smaller the projected area on the planarization layer 2, the larger its capacitance. Based on these relationships, intermediate electrodes 7 with different capacitances can be designed.

[0079] In one possible implementation, the transfer electrode 7 is made of a titanium-aluminum-titanium trilayer alloy. Although copper has good conductivity, manufacturing the transfer electrode 7 with copper is costly and unsuitable for mass production. Therefore, using a titanium-aluminum-titanium trilayer alloy as the material for the transfer electrode 7 not only provides good conductivity but also reduces manufacturing costs, making it more suitable for mass production.

[0080] Please see Figure 9 This embodiment provides a method for manufacturing a display panel, the method comprising:

[0081] S10: A plurality of array functional film layers are sequentially formed on a substrate, the array functional film layers including a planarization layer 2 on the side away from the substrate.

[0082] In this embodiment, multiple array functional film layers are sequentially formed on the substrate in a conventional manner, wherein the array functional film layers include a planarization layer 2 on the side away from the substrate.

[0083] S11: A first electrode 3 is formed on the side of the planarization layer 2 away from the substrate.

[0084] In this embodiment, the first electrode 3 can be an anode, and one first electrode 3 corresponds to one second electrode, which is a cathode. A plurality of first electrodes 3 are formed on the side of the planarization layer 2 away from the substrate using conventional methods, and the plurality of first electrodes 3 are spaced apart.

[0085] S12: A pixel defining layer 4, a transfer electrode 7, and a light-emitting layer 5 are formed sequentially on the side of the first electrode 3 away from the planarization layer 2.

[0086] The intermediate electrode is located between the light-emitting layer and the first electrode. The side of the intermediate electrode closest to the planarization layer is in direct contact with the first electrode, or the intermediate electrode is in contact with the first electrode through a through-hole penetrating the pixel defining layer. The side of the intermediate electrode furthest from the planarization layer is in contact with the light-emitting layer.

[0087] In this embodiment, by providing a transfer electrode 7 that is electrically in contact with the first electrode 3 between the light-emitting layer 5 and the first electrode 3, and by having the transfer electrode 7 in contact with the light-emitting layer 5 on the side away from the planarization layer 2, the influence of the etched pixel defining layer 4 on the electrical energy transfer between the first electrode 3 and the light-emitting layer 5 can be reduced, thereby improving the conductivity between the first electrode 3 and the corresponding light-emitting layer 5, and thus improving the luminous efficiency of the corresponding light-emitting layer 5.

[0088] Based on the same concept, in one possible implementation, this application also provides an electronic device, including the display panel 10 described in this application. The electronic device can be a mobile phone, computer, television, etc. Since this electronic device includes the display panel 10 described in this application, it also has the beneficial effects of the display panel described in this application, which will not be elaborated further here.

[0089] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0090] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A display panel, characterized in that, The display panel includes: Planarization layer; The first electrode is located on one side of the planarization layer; A pixel defining layer located on the side of the first electrode away from the planarization layer; A light-emitting layer located on the side of the first electrode away from the planarization layer; A transfer electrode is located between the light-emitting layer and the first electrode; the transfer electrode contacts the first electrode through a through-hole penetrating the pixel defining layer; the side of the transfer electrode away from the planarization layer contacts the light-emitting layer; the pixel defining layer is a single layer; the side of the pixel defining layer away from the planarization layer is flat; the side of the transfer electrode away from the planarization layer is flat; the thickness of the transfer electrode corresponding to at least two different colored sub-pixels is different; and / or the orthogonal projection area of ​​the transfer electrode corresponding to at least two different colored sub-pixels on the planarization layer is different.

2. The display panel according to claim 1, characterized in that, At least a portion of the transfer electrode is located on the side of the pixel defining layer away from the first electrode, and the transfer electrode extends through a through-hole in the pixel defining layer to make electrical contact with the first electrode.

3. The display panel according to claim 1 or 2, characterized in that, The first electrode has a contact hole on the side of its surface near the transfer electrode, and the transfer electrode extends into the contact hole to make electrical contact with the first electrode.

4. The display panel according to claim 3, characterized in that, The contact hole is a blind hole.

5. The display panel according to claim 3, characterized in that, The number of contact holes is multiple.

6. The display panel according to claim 1 or 2, characterized in that, The material of the transfer electrode includes a titanium-aluminum-titanium three-layer alloy.

7. A method for manufacturing a display panel, characterized in that, The method includes: Multiple array functional film layers are sequentially formed on a substrate, the array functional film layers including a planarization layer on the side away from the substrate; A first electrode is formed on the side of the planarization layer away from the substrate; A pixel defining layer, a transfer electrode, and a light-emitting layer are sequentially formed on the side of the first electrode away from the planarization layer; The intermediate electrode is located between the light-emitting layer and the first electrode, and the intermediate electrode contacts the first electrode through a through-hole penetrating the pixel defining layer; the side of the intermediate electrode away from the planarization layer contacts the light-emitting layer, the pixel defining layer is a single layer, the side of the intermediate electrode away from the planarization layer is flat, the thickness of the intermediate electrode corresponding to at least two different color sub-pixels is different, and / or the orthogonal projection area of ​​the intermediate electrode corresponding to at least two different color sub-pixels on the planarization layer is different.

8. An electronic device, characterized in that, Includes the display panel as described in any one of claims 1-6.

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