Display panel, manufacturing method thereof, and display device

Abstract

The present application discloses a display panel, a manufacturing method thereof, and a display device. The display panel includes a light-emitting structure, the light-emitting structure includes a cathode layer and an anode layer, the anode layer includes a first surface and a second surface opposite to each other, the second surface faces the cathode layer, the cathode layer includes a second sub-cathode layer, the second sub-cathode layer includes a third surface facing the same direction as the first surface, and the third surface is lower than the first surface. In the display panel, the manufacturing method thereof, and the display device of the embodiment of the present application, the third surface of the second sub-cathode layer is set to be lower than the first surface of the anode layer, and the parasitic capacitance formed between adjacent anodes is isolated, which can effectively improve the crosstalk phenomenon between adjacent pixels and improve the display effect.

Description

Technical Field

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

[0002] As display resolution increases, the distribution of pixels in the display screen becomes more and more dense. However, since the anodes of the closely arranged pixels are close to each other, crosstalk is easily generated between adjacent pixels, affecting the display effect. Summary of the invention

[0003] Embodiments of the present application provide a display panel, a method for manufacturing the same, and a display device.

[0004] The display panel of the embodiment of the present application includes a light-emitting structure, which includes a cathode layer and an anode layer. The anode layer includes a first surface and a second surface opposite to each other, the second surface faces the cathode layer, the cathode layer includes a second sub-cathode layer, the second sub-cathode layer includes a third surface facing the same direction as the first surface, and the third surface is lower than the first surface.

[0005] In some embodiments, the light emitting structure includes a planar layer and a source-drain electrode layer, the planar layer is disposed on a side of the anode layer away from the cathode layer, and the anode layer penetrates the planar layer and is electrically connected to the source-drain electrode layer.

[0006] In some embodiments, the anode layer includes a plurality of anodes, a first groove is formed in the flat layer between adjacent anodes, and the second sub-cathode layer is located in the first groove.

[0007] In some embodiments, the light emitting structure includes an organic light emitting layer located between the cathode layer and the anode layer, and the organic light emitting layer is configured to emit light under the driving of the anode layer and the cathode layer.

[0008] In some embodiments, the light-emitting structure further includes an adsorption electrode, and the adsorption electrode is disposed in the first groove and connected to the organic light-emitting layer.

[0009] In some embodiments, the adsorption electrode is disposed between the organic light-emitting layer and the source-drain electrode layer and is connected to the source-drain electrode layer.

[0010] In some embodiments, the cathode layer includes a first sub-cathode layer, and the first sub-cathode layer is arranged corresponding to the anode layer.

[0011] In some embodiments, the light-emitting structure includes a pixel defining layer, which is disposed between the anode layer and the cathode layer, and is used to define a light-emitting area. A second groove is formed in the pixel defining layer between adjacent anodes, and the second sub-cathode layer is disposed in the second groove.

[0012] In some embodiments, the display panel further includes a backplane and an encapsulation layer that are disposed opposite to each other, and the light-emitting structure is disposed between the backplane and the encapsulation layer.

[0013] The method for manufacturing a display panel according to an embodiment of the present application comprises the following steps:

[0014] Providing a back plate, and forming a source-drain electrode layer on the back plate;

[0015] forming a planar layer on the source-drain electrode layer, wherein the planar layer is formed with a first groove;

[0016] forming an anode layer and an adsorption electrode on the flat layer, wherein the anode layer comprises a first surface and a second surface opposite to each other, and the adsorption electrode is arranged opposite to the first groove and connected to the source-drain electrode layer;

[0017] forming a pixel definition layer on the anode layer, and forming a second groove on the pixel definition layer, wherein the second groove is arranged corresponding to the first groove;

[0018] forming an organic light-emitting layer on the pixel defining layer, wherein the organic light-emitting layer is at least partially disposed in the first groove to connect to the adsorption electrode;

[0019] A cathode layer is formed on the organic light-emitting layer, wherein the cathode layer includes a second sub-cathode layer, wherein the second sub-cathode layer includes a third surface facing the same direction as the first surface, and the third surface is lower than the first surface.

[0020] The display device according to the embodiment of the present application includes the display panel described in any one of the above embodiments.

[0021] In the display panel, its manufacturing method and display device of the embodiment of the present application, the third surface of the second sub-cathode layer is set lower than the first surface of the anode layer, and the parasitic capacitance formed between adjacent anodes is isolated, which can effectively improve the crosstalk phenomenon between adjacent pixels and improve the display effect.

[0022] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 It is a schematic diagram of the structure of a display panel of certain embodiments of the present application.

[0025] Figure 2 This is another structural schematic diagram of a display panel of certain embodiments of the present application.

[0026] Figure 3 is a schematic diagram of a display panel of certain embodiments of the present application.

[0027] Figure 4 It is a schematic flow chart of a method for manufacturing a display panel according to certain embodiments of the present application.

[0028] Description of main component symbols:

[0029] Display panel 10, light emitting structure 100, cathode layer 110, first sub-cathode layer 1101, second sub-cathode layer 1102, third surface 1103, anode layer 120, first anode 121, second anode 122, first surface 1201, second surface 1202, organic light emitting layer 130, first sub-organic light emitting layer 1301, second sub-organic light emitting layer 1302, flat layer 140, first groove 141, source-drain electrode layer 150, adsorption electrode 160, pixel defining layer 170, second groove 171, back panel 200, encapsulation layer 300. DETAILED DESCRIPTION

[0030] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0031] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0032] 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.

[0033] Please also read Figure 1 The display panel 10 includes a light emitting structure 100, the light emitting structure 100 includes a cathode layer 110 and an anode layer 120, the anode layer 120 includes a first surface 1201 and a second surface 1202 opposite to each other, the second surface 1202 faces the cathode layer 110, the cathode layer 110 includes a second sub-cathode layer 1102, the second sub-cathode layer 1102 includes a third surface 1103 facing the same direction as the first surface 1201, and the third surface 1103 is lower than the first surface 1202.

[0034] Specifically, the display panel 10 may include blue pixels, green pixels, and red pixels, and the three pixels may be closely arranged in the display panel 10 in the order of blue, green, and red. Since the driving voltage of the blue pixel is higher than the driving voltage of the green pixel and the red pixel, the driving voltage of the green pixel is higher than the driving voltage of the red pixel, and the anode of the blue pixel is closer to the anode of the green pixel, and the anode of the green pixel is closer to the anode of the red pixel, when the blue pixel emits light and the adjacent green pixel does not emit light, the green pixel will be coupled to emit light due to the parasitic capacitance between the blue pixel and the green pixel, forming a blue-green crosstalk. Similarly, when the green pixel emits light and the adjacent red pixel does not emit light, the red pixel will be coupled to emit light due to the parasitic capacitance between the green pixel and the red pixel, forming a red-green crosstalk, and the signal crosstalk will affect the display effect.

[0035] In addition, since the anode of the blue pixel is close to the anode of the green pixel, it will also cause lateral carrier leakage of the organic light-emitting layer 130, that is, when the blue pixel emits light and the adjacent green pixel and red pixel do not emit light, when the blue pixel emits light, the adjacent green pixel will emit light due to the lateral movement of the carrier, and the adjacent red pixel may also emit light. Similarly, when the green pixel emits light and the adjacent red pixel does not emit light, when the green pixel emits light, the adjacent red pixel will emit light due to the lateral movement of the carrier, resulting in poor display effect and poor user experience.

[0036] In the display panel 10 of the embodiment of the present application, the light emitting structure 100 is used to realize functions such as light emitting driving and control, and the light emitting structure 100 includes a cathode layer 110 and an anode layer 120 .

[0037] The anode layer 120 includes a first surface 1201 and a second surface 1202 opposite to each other, and the second surface 1202 faces the cathode layer 110. More specifically, the second surface 1202 faces the first sub-cathode layer 1101. Figure 1 In the orientation shown, the first surface 1201 is the lower surface of the anode layer 120 , and the second surface 1202 is the upper surface of the anode layer 120 .

[0038] The cathode layer 110 includes a first sub-cathode layer 1101 and a second sub-cathode layer 1102. The second sub-cathode layer 1102 includes a third surface 1103 facing the same direction as the first surface 1201, and the third surface 1103 is lower than the first surface 1202. Figure 1 In the orientation shown, the third surface 1103 is the lower surface of the cathode layer 110 .

[0039] The third surface 1103 of the second sub-cathode layer 1102 is set lower than the first surface 1201 of the anode layer 120, so that the parasitic capacitance formed between adjacent anodes can be isolated, effectively improving the crosstalk between adjacent pixels and improving the display effect.

[0040] It should be noted that the anode layer 120 may include a plurality of anodes, such as a first anode 121, a second anode 122, etc., and the cathode layer 110 includes a first sub-cathode layer 1101 corresponding to the anode and a second sub-cathode layer 1102 between adjacent anodes. Since the light emitting structure 100 includes a plurality of anodes, the light emitting structure 100 also includes a plurality of first sub-cathode layers 1101 and a plurality of second sub-cathode layers 1102. The first sub-cathode layer 1101 is arranged corresponding to the anode layer 120, and the second sub-cathode layer 1102 is located in the first groove 141 formed by the planar layer 140.

[0041] In some embodiments, the light emitting structure 100 includes a planar layer 140 and a source-drain electrode layer 150 . The planar layer 140 is disposed on a side of the anode layer 120 away from the cathode layer 110 . The anode layer 120 penetrates the planar layer 140 and is electrically connected to the source-drain electrode layer 150 .

[0042] Specifically, the planar layer 140 is used to ensure the reliability and stability of the manufacturing process of the display panel 10 , and the source-drain electrode layer 150 is used to be electrically connected to the anode to transmit the control signal to the anode to control the pixel to emit light.

[0043] In some embodiments, the anode layer 120 includes a plurality of anodes, a first groove 141 is formed in the planar layer 140 between adjacent anodes, and the second sub-cathode layer 1102 is located in the first groove 141 .

[0044] Specifically, a first groove 141 is formed in the planar layer 140 between adjacent anodes, and the second sub-cathode layer 1102 is disposed in the first groove 141 .

[0045] In some embodiments, when the green pixel emits light and the adjacent red pixel does not, since there is a first groove 141 between the anode of the green pixel and the anode of the red pixel, the second sub-cathode layer 1102 in the first groove 141 isolates the parasitic capacitance between the anode of the green pixel and the anode of the red pixel.

[0046] In this way, the crosstalk phenomenon between adjacent pixels can be effectively improved.

[0047] In some embodiments, the light emitting structure 100 includes an organic light emitting layer 130 located between the cathode layer 110 and the anode layer 120 , and the organic light emitting layer 130 is configured to emit light under the driving of the anode layer 120 and the cathode layer 110 .

[0048] Specifically, the organic light-emitting layer 130 includes a first sub-organic light-emitting layer 1301 corresponding to the anode and a second sub-organic light-emitting layer 1302 between adjacent anodes. The second sub-organic light-emitting layer 1302 is disposed in the first groove 141. Since the light-emitting structure 100 includes a plurality of anodes, the light-emitting structure 100 also includes a plurality of first sub-organic light-emitting layers 1301 and a plurality of second sub-organic light-emitting layers 1302.

[0049] In some embodiments, when the green pixel emits light and the adjacent red pixel does not, since there is a first groove 141 between the anode of the green pixel and the anode of the red pixel, the second sub-organic light-emitting layer 1302 and the second sub-cathode layer 1102 in the first groove 141 isolate the parasitic capacitance between the anode of the green pixel and the anode of the red pixel.

[0050] In this way, the crosstalk phenomenon between adjacent pixels can be effectively improved.

[0051] At the same time, compared with the light-emitting structure without the first groove 141, the organic light-emitting layer 130 of the light-emitting structure 100 with the first groove 141 includes a second sub-organic light-emitting layer 1302 arranged in the first groove 141, and the organic light-emitting layer 130 is longer. The increase in the organic light-emitting layer 130 can also effectively improve the crosstalk phenomenon between adjacent pixels and improve the display effect.

[0052] See also Figure 2In some embodiments, the light emitting structure 100 further includes an adsorption electrode 160 , which is disposed in the first groove 141 and connected to the organic light emitting layer 130 .

[0053] Specifically, the adsorption electrode 160 is disposed in the first groove 141 and between adjacent anodes. The adsorption electrode 160 is electrically connected to the second sub-organic light-emitting layer 1302 and is used to adsorb lateral carriers between adjacent anodes in the organic light-emitting layer 130 .

[0054] See also Figure 3 In some embodiments, when the green pixel emits light and the adjacent red pixel does not emit light, since there is an adsorption electrode 160 between the anode 121 of the green pixel and the anode 122 of the red pixel, a negative voltage, such as -10V, -15V, etc., is given to the adsorption electrode 160, so that the adsorption electrode 160 adsorbs the lateral carriers. In this way, the leakage of lateral carriers can be reduced, the crosstalk between adjacent pixels can be improved, and the display effect can be improved.

[0055] At the same time, since there are the first groove 141 and the second groove 171 between the anode of the green pixel and the anode of the red pixel, the second sub-organic light-emitting layer 1302 and the second sub-cathode layer 1102 in the first groove 141 and the second groove 171 isolate the parasitic capacitance between the anode of the green pixel and the anode of the red pixel, thereby further effectively improving the crosstalk phenomenon between adjacent pixels.

[0056] In some embodiments, the adsorption electrode 160 is disposed between the organic light emitting layer 130 and the source-drain electrode layer 150 and is connected to the source-drain electrode layer 150 .

[0057] Specifically, the adsorption electrode 160 is disposed between the organic light emitting layer 130 and the source-drain electrode layer 150, and is electrically connected to the organic light emitting layer 130 and the source-drain electrode layer 150. The adsorption electrode 160 is used to adsorb lateral carriers between adjacent anodes, and the specific embodiment is similar to the above embodiment, which will not be repeated here.

[0058] In some embodiments, the light-emitting structure 100 includes a pixel defining layer 170, which is disposed between the anode layer 120 and the cathode layer 110, and the pixel defining layer 170 is used to define the light-emitting area. The pixel defining layer 170 between adjacent anodes forms a second groove 171, and the second sub-cathode layer 1102 is penetrated into the second groove 171.

[0059] Specifically, the pixel defining layer 170 is disposed between the anode layer 120 and the cathode layer 110 to define a light emitting area, for example, to limit the size of the light emitting area, etc. The pixel defining layer 170 between adjacent anodes is formed with a second groove 171, the second sub-organic light emitting layer 1302 and the second sub-cathode layer 1102 are disposed in the second groove 171, and the second sub-cathode layer 1102 penetrates the second groove 171.

[0060] In some embodiments, when the green pixel emits light and the adjacent red pixel does not, since there is a second groove 171 between the anode of the green pixel and the anode of the red pixel, the second sub-organic light-emitting layer 1302 and the second sub-cathode layer 1102 in the second groove 171 isolate the parasitic capacitance between the anode of the green pixel and the anode of the red pixel. In this way, the crosstalk phenomenon between adjacent pixels can be effectively improved.

[0061] At the same time, compared with the light-emitting structure without the second groove 171, the light-emitting structure 100 is provided with the second groove 171, the organic light-emitting layer 130 includes a second sub-organic light-emitting layer 1302 arranged in the second groove 171, and the organic light-emitting layer 130 is longer. The increase in the organic light-emitting layer 130 can also effectively improve the crosstalk phenomenon between adjacent pixels and improve the display effect.

[0062] In some embodiments, the display panel 10 further includes a back plate 200 and an encapsulation layer 300 that are disposed opposite to each other, and the light emitting structure 100 is disposed between the back plate 200 and the encapsulation layer 300 .

[0063] Specifically, the encapsulation layer 300 is disposed on a side of the cathode layer 110 away from the anode layer 120, and the encapsulation layer 300 is close to the cathode layer 110, and is used to encapsulate the light emitting structure 100, and reduce or prevent the degradation of the light emitting structure 100 caused by moisture and / or oxygen included in the environment. The encapsulation layer 300 can be a single-layer structure or a composite layer structure, which is not specifically limited.

[0064] The backplane 200 is disposed on a side of the source-drain electrode layer 150 away from the anode layer 120 . The backplane 200 is in close contact with the source-drain electrode layer 150 and / or the planar layer 140 . The backplane 200 is used to provide a display driving signal to the light-emitting structure 100 , and to protect the light-emitting structure 100 , thereby reducing or preventing degradation of the light-emitting structure 100 .

[0065] See also Figure 1 and Figure 4 , a method for manufacturing a display panel 10 according to an embodiment of the present application, the manufacturing method comprising:

[0066] S10: providing a back plate 200, and forming a source-drain electrode layer 150 on the back plate 200;

[0067] S20: forming a planar layer 140 on the source-drain electrode layer 150 , wherein the planar layer 140 is formed with a first groove 141 ;

[0068] S30: forming an anode layer 120 and an adsorption electrode 160 on the planar layer 140 , wherein the anode layer 120 includes a first surface 1201 and a second surface 1202 opposite to each other, and the adsorption electrode 160 is disposed opposite to the first groove 141 and connected to the source-drain electrode layer 150 ;

[0069] S40: forming a pixel definition layer 170 on the anode layer 120, and forming a second groove 171 in the pixel definition layer, wherein the second groove 171 is disposed corresponding to the first groove 141;

[0070] S50: forming an organic light emitting layer 130 on the pixel defining layer 170 , wherein the organic light emitting layer 130 is at least partially disposed in the first groove 141 to connect to the adsorption electrode 160 ;

[0071] S60 : forming an upper cathode layer 110 on the organic light-emitting layer 130 , wherein the cathode layer 110 includes a second sub-cathode layer 1102 , and the second sub-cathode layer 1102 includes a third surface 1103 facing the same direction as the first surface 1201 .

[0072] For details, please refer again to Figure 1 , the anode layer 120 includes a plurality of anodes, such as a first anode and a second anode, etc., the organic light-emitting layer 130 includes a first sub-organic light-emitting layer 1301 corresponding to the anode and a second sub-organic light-emitting layer 1302 between adjacent anodes, and the cathode layer 110 includes a first sub-cathode layer 1101 corresponding to the anode and a second sub-cathode layer 1102 between adjacent anodes. Since the light-emitting structure 100 includes a plurality of anodes, the light-emitting structure 100 includes a plurality of first sub-organic light-emitting layers 1301 and a plurality of second sub-organic light-emitting layers 1302, and also includes a plurality of first sub-cathode layers 1101 and a plurality of second sub-cathode layers 1102. The first sub-organic light-emitting layer 1301 and the first sub-cathode layer 1101 are disposed outside the first groove 141 and the second groove 171, corresponding to the anode. The second sub-organic light-emitting layer 1302 and the second sub-cathode layer 1102 are disposed inside the first groove 141 and the second groove 171. The first sub-cathode layer 1101 is disposed corresponding to the anode layer 120 , and the second sub-cathode layer 1102 is located in the first groove 141 formed in the planar layer 140 .

[0073] In the manufacturing method of the display panel 10 of the embodiment of the present application, the third surface 1103 of the second sub-cathode layer 1102 is set lower than the first surface 1201 of the anode layer, and the cathode layer 110 is partially set between the anodes of adjacent pixels, that is, the parasitic capacitance between adjacent anodes is isolated by the second sub-cathode layer 1102, so that the crosstalk between adjacent pixels can be effectively improved and the display effect can be improved. At the same time, the growth of the organic light-emitting layer 130 can also help improve the crosstalk between adjacent pixels.

[0074] Further, please refer again to Figure 2 The adsorption electrode 160 is disposed between adjacent anodes and between the organic light emitting layer 130 and the source-drain electrode layer 150. The adsorption electrode 160 is disposed opposite to the first groove 141. The adsorption electrode 160 is electrically connected to the second sub-organic light emitting layer 1302 in the first groove 141, and is used to adsorb lateral carriers between adjacent anodes.

[0075] Thus, by giving the adsorption electrode 160 a negative voltage, such as -10V, -15V, etc., the adsorption electrode 160 adsorbs the lateral carriers, which can reduce the leakage of the lateral carriers, improve the crosstalk between adjacent pixels, and enhance the display effect.

[0076] At the same time, since there are the first groove 141 and the second groove 171 between the anodes of adjacent pixels, the second sub-organic light-emitting layer 1302 and the second sub-cathode layer 1102 in the first groove 141 and the second groove 171 isolate the parasitic capacitance between the anodes of adjacent pixels, thereby further effectively improving the crosstalk phenomenon between adjacent pixels.

[0077] The display device according to the embodiment of the present application includes the display panel 10 described in any one of the above embodiments.

[0078] Specifically, the display device can be a mobile phone, a tablet computer, a teller machine, a smart wearable device, a smart home appliance, a game console, a head-mounted display device, etc., without specific limitation. It can be understood that the display device can also be any other device with a display function.

[0079] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0080] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A display panel, characterized in that: The display panel comprises a light-emitting structure, the light-emitting structure comprises a cathode layer and an anode layer, the anode layer comprises a first surface and a second surface opposite to each other, the second surface faces the cathode layer, the cathode layer comprises a second sub-cathode layer, the second sub-cathode layer comprises a third surface facing the same direction as the first surface, the third surface is lower than the first surface, and the second sub-cathode layer is used to isolate the parasitic capacitance formed between adjacent cathodes and anodes; The light emitting structure comprises a flat layer and a source-drain electrode layer, wherein the flat layer is arranged on a side of the anode layer away from the cathode layer, and the anode layer penetrates the flat layer and is electrically connected to the source-drain electrode layer; The anode layer includes a plurality of anodes, the flat layer between adjacent anodes is formed with a first groove, and the second sub-cathode layer is located in the first groove; The light emitting structure comprises an organic light emitting layer located between the cathode layer and the anode layer, and the organic light emitting layer is used to emit light under the driving of the anode layer and the cathode layer; The light emitting structure further includes an adsorption electrode, which is disposed in the first groove and connected to the organic light emitting layer; The adsorption electrode is disposed between the organic light emitting layer and the source-drain electrode layer and is connected to the source-drain electrode layer.

2. The display panel according to claim 1, characterized in that: The cathode layer includes a first sub-cathode layer, and the first sub-cathode layer is arranged corresponding to the anode layer.

3. The display panel according to claim 1, characterized in that: The light-emitting structure includes a pixel defining layer, which is arranged between the anode layer and the cathode layer. The pixel defining layer is used to define a light-emitting area. The pixel defining layer between adjacent anodes forms a second groove, and the second sub-cathode layer is inserted into the second groove.

4. The display panel according to claim 1, characterized in that: The display panel further includes a back plate and an encapsulation layer which are arranged opposite to each other, and the light emitting structure is arranged between the back plate and the encapsulation layer.

5. A method for manufacturing a display panel, characterized in that: The production method comprises the following steps: Providing a back plate, and forming a source-drain electrode layer on the back plate; forming a planar layer on the source-drain electrode layer, wherein the planar layer is formed with a first groove; forming an anode layer and an adsorption electrode on the flat layer, wherein the anode layer includes a first surface and a second surface opposite to each other, and the adsorption electrode is arranged opposite to the first groove and connected to the source-drain electrode layer; forming a pixel defining layer on the anode layer, and forming a second groove on the pixel defining layer, wherein the second groove is arranged corresponding to the first groove; forming an organic light-emitting layer on the pixel defining layer, wherein the organic light-emitting layer is at least partially disposed in the first groove to connect to the adsorption electrode; A cathode layer is formed on the organic light-emitting layer, the cathode layer includes a second sub-cathode layer, the second sub-cathode layer includes a third surface facing the same direction as the first surface, the third surface is lower than the first surface; the second sub-cathode layer is used to isolate the parasitic capacitance formed between adjacent anodes and cathodes.

6. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 4.

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