Display panel and display device

Abstract

The invention discloses a display panel and a display device, and belongs to the technical field of display. The display panel comprises a driving backboard, a first electrode layer, a pixel definition layer, an organic light-emitting layer and a second electrode layer. The pixel definition layer comprises a first definition layer, a second definition layer and a third definition layer which are stacked in the direction perpendicular to and away from the driving backboard, the side, facing the pixel opening, of the first definition layer protrudes out of the side, facing the pixel opening, of the second definition layer, and the part, protruding out of the second definition layer, of the first definition layer is a first protruding part; the side, facing the pixel opening, of the third definition layer protrudes out of the side, facing the pixel opening, of the second definition layer, and the part, protruding out of the second definition layer, of the third definition layer is a second protruding part. The form of the first protruding part located in the first type of pixel openings is different from the form of the first protruding part located in the second type of pixel openings. In this way, the first protruding parts can be matched with different pixel openings, and the overall efficiency of the display panel is improved.

Description

Technical Field

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

[0002] Organic Light Emitting Diode (OLED) is a current-type organic light-emitting device. OLED display panels are widely used in the display field due to their advantages such as thin thickness, self-luminescence, high resolution, and fast response speed.

[0003] An OLED display panel generally includes: a driving backplane, and a plurality of light-emitting devices located on the driving backplane, wherein the light-emitting devices include: a first electrode layer, an organic light-emitting layer, and a second electrode layer stacked in a direction away from the driving backplane. A pixel definition layer is provided between adjacent light-emitting devices, and a concave structure is provided on the side of the pixel definition layer close to the light-emitting device to block lateral leakage current. However, the organic light-emitting layer will be distorted at the concave structure, so it is necessary to provide a protrusion on the side of the pixel definition layer close to the light-emitting device to reduce the distortion.

[0004] However, different types of light-emitting devices have different performances, and providing the same protrusions may cause some light-emitting devices to have low luminous efficiency, thereby resulting in low overall efficiency of the OLED display panel. Summary of the invention

[0005] The present application provides a display panel and a display device, which can solve the problem of low overall efficiency of the display panel. The technical solution is as follows:

[0006] In one aspect, a display panel is provided, comprising: a driving backplane, a first electrode layer, a pixel definition layer, an organic light emitting layer, and a second electrode layer;

[0007] The first electrode layer is located at one side of the driving backplane, and the first electrode layer has a plurality of first electrodes that are separately arranged, and the first electrodes are electrically connected to the driving backplane;

[0008] The pixel definition layer is located on a side of the first electrode layer away from the driving backplane, and the pixel definition layer has a plurality of pixel openings, and the plurality of pixel openings include: a plurality of first-type pixel openings and a plurality of second-type pixel openings;

[0009] The organic light emitting layer is located on a side of the pixel definition layer away from the driving backplane;

[0010] The second electrode layer is located on a side of the organic light emitting layer away from the driving backplane;

[0011] The pixel definition layer comprises: a first definition layer, a second definition layer and a third definition layer stacked in a direction vertically and away from the driving backplane, and the pixel opening sequentially penetrates the first definition layer, the second definition layer and the third definition layer;

[0012] A side of the first definition layer facing the pixel opening protrudes beyond a side of the second definition layer facing the pixel opening, and a portion of the first definition layer protruding from the second definition layer is a first protruding portion; a side of the third definition layer facing the pixel opening protrudes beyond a side of the second definition layer facing the pixel opening, and a portion of the third definition layer protruding from the second definition layer is a second protruding portion;

[0013] The shape of the first protrusion located in the first type of pixel opening is different from the shape of the first protrusion located in the second type of pixel opening.

[0014] Optionally, a length of the first protrusion located in the first type of pixel opening protruding from the second definition layer is greater than a length of the first protrusion located in the second type of pixel opening protruding from the second definition layer.

[0015] Optionally, for the first protrusion and the second protrusion located in the first type pixel opening, a side of the first protrusion facing the first type pixel opening protrudes more than a side of the second protrusion facing the first type pixel opening;

[0016] For the first protrusion and the second protrusion located in the second type pixel opening, a side of the first protrusion facing the second type pixel opening is flush with a side of the second protrusion facing the second type pixel opening.

[0017] Optionally, for the first protrusion and the second protrusion located in the first type of pixel opening, a side of the first protrusion facing the first type of pixel opening protrudes beyond a side of the second protrusion facing the first type of pixel opening, and a length by which the first protrusion protrudes beyond the second protrusion is a first length;

[0018] For the first protrusion and the second protrusion located in the second type pixel opening, the first protrusion faces a side of the second type pixel opening and protrudes beyond a side of the second protrusion facing the second type pixel opening, and a length by which the first protrusion protrudes beyond the second protrusion is a second length;

[0019] Wherein, the first length is greater than the second length.

[0020] Optionally, the first length ranges from 0.01 micrometer to 0.02 micrometer, and the second length ranges from less than or equal to 0.01 micrometer.

[0021] Optionally, a height of the first protrusion located in the first type pixel opening in a direction perpendicular to the driving backplane is equal to a height of the first protrusion located in the second type pixel opening in a direction perpendicular to the driving backplane.

[0022] Optionally, a height of the first protrusion located in the first type pixel opening in a direction perpendicular to the driving backplane is smaller than a height of the first protrusion located in the second type pixel opening in a direction perpendicular to the driving backplane.

[0023] Optionally, the height of the first protrusion located in the first type of pixel opening in a direction perpendicular to the driving backplane ranges from less than or equal to 350 angstroms, and the height of the first protrusion located in the second type of pixel opening in a direction perpendicular to the driving backplane ranges from 400 angstroms to 500 angstroms.

[0024] Optionally, a length of the first protrusion located in the first type of pixel opening protruding from the second definition layer is equal to a length of the first protrusion located in the second type of pixel opening protruding from the second definition layer.

[0025] Optionally, a length of the first protrusion located in the first type of pixel opening protruding from the second definition layer is greater than a length of the first protrusion located in the second type of pixel opening protruding from the second definition layer;

[0026] Furthermore, a height of the first protrusion located in the first type pixel opening in a direction perpendicular to the driving backplane is smaller than a height of the first protrusion located in the second type pixel opening in a direction perpendicular to the driving backplane.

[0027] Optionally, the display panel also includes an encapsulation layer and a color filter layer; the encapsulation layer is located on the side of the second electrode layer away from the driving backplane; the color filter layer is located on the side of the encapsulation layer away from the driving backplane, and the color filter layer includes: a plurality of color resist blocks corresponding one to one to the pixel openings, the orthographic projection of the pixel opening on the driving backplane is located within the orthographic projection of the corresponding color resist block on the driving backplane.

[0028] Optionally, the plurality of color resistance blocks include a plurality of blue color resistance blocks, a plurality of red color resistance blocks and a plurality of green color resistance blocks;

[0029] Among them, the multiple first-type pixel openings are all blue pixel openings, and the orthographic projections of the blue pixel openings on the driving backplane are located within the orthographic projections of the blue color resist block on the driving backplane; the second-type pixel openings include multiple red pixel openings and multiple green pixel openings, the orthographic projections of the red pixel openings on the driving backplane are located within the orthographic projections of the red color resist block on the driving backplane, and the orthographic projections of the green pixel openings on the driving backplane are located within the orthographic projections of the green color resist block on the driving backplane.

[0030] Optionally, the organic light-emitting layer includes a first light-emitting layer, a second light-emitting layer and a charge generation layer located therebetween;

[0031] The second light-emitting layer is closer to the driving backplane than the first light-emitting layer; the first light-emitting layer is configured to emit blue light, and the second light-emitting layer is configured to emit yellow light.

[0032] On the other hand, a display device is provided, including a driving chip and a display panel electrically connected to the driving chip, wherein the display panel includes any one of the display panels described above.

[0033] The beneficial effects of the technical solution provided by this application include at least:

[0034] The side of the first definition layer facing the pixel opening protrudes beyond the side of the second definition layer facing the pixel opening, and the side of the third definition layer facing the pixel opening protrudes beyond the side of the second definition layer facing the pixel opening. In this way, a concave structure is formed on the side wall of the pixel definition layer facing the pixel opening, which can isolate at least one layer of the organic light-emitting layer, such as the charge generation layer, and can have a good isolation effect on the lateral leakage current, ensuring that the display panel can achieve a good display effect. At the same time, the shape of the first protrusion located in the first type of pixel opening is different from the shape of the first protrusion located in the second type of pixel opening, so that the first protrusion can better adapt to the light-emitting devices in different pixel openings, improve the efficiency of each light-emitting device, and make the light-emitting efficiency of each light-emitting device more balanced, thereby improving the overall efficiency of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 It is a schematic diagram of a film layer structure of a display panel provided by the related technology;

[0037] Figure 2 is a top view of a display panel provided in an embodiment of the present application;

[0038] Figure 3 yes Figure 2 The schematic diagram of the film layer structure of the display panel at AA' is shown;

[0039] Figure 4 yes Figure 2 Another schematic diagram of the film layer structure of the display panel at AA' is shown;

[0040] Figure 5 is a simulation schematic diagram of a display panel provided in an embodiment of the present application;

[0041] Figure 6 is a simulation schematic diagram of another display panel provided in an embodiment of the present application;

[0042] Figure 7 is a simulation schematic diagram of another display panel provided in an embodiment of the present application;

[0043] Figure 8 is a schematic diagram of a film layer structure of a display panel provided in an embodiment of the present application;

[0044] Fig. 9 is a schematic diagram of a film layer structure of another display panel provided in an embodiment of the present application;

[0045] Fig.10 is a schematic diagram of a film layer structure of another display panel provided in an embodiment of the present application;

[0046] Fig.11 It is a schematic diagram of the film layer structure of another display panel provided in an embodiment of the present application. DETAILED DESCRIPTION

[0047] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0048] In the related art, a silicon-based OLED display panel may generally include: a driving backplane, and a plurality of light-emitting devices located on the driving backplane. The light-emitting device may include: a first electrode layer, an organic light-emitting layer, and a second electrode layer stacked in a direction away from the driving backplane. Among them, the organic light-emitting layer may be composed of a plurality of stacked sub-light-emitting layers, and each sub-light-emitting layer may include: a stacked hole injection layer, a hole transport layer, a light-emitting material layer, an electron transport layer, and an electron injection layer, and each sub-light-emitting layer may be connected in series through a charge generation layer. In this way, the color of the light emitted by the organic light-emitting layer may be determined by a plurality of sub-light-emitting layers. For example, a sub-light-emitting layer capable of emitting yellow light and a sub-light-emitting layer capable of emitting blue light may be stacked so that the organic light-emitting layer emits white light.

[0049] Wherein, the first electrode layer can be electrically connected to the driving backplane. When the corresponding voltage is applied to the first electrode layer and the second electrode layer, an electric field will be formed between the first electrode layer and the second electrode layer. In this way, the hole injection layer can inject holes into the hole transport layer, and the holes are transmitted to the light-emitting material layer through the hole transport layer. The electron injection layer can inject electrons into the electron transport layer, and the electrons are transmitted to the light-emitting material layer through the electron transport layer. The holes and electrons are combined into high-energy excitons in the light-emitting material layer, and the high-energy excitons are unstable and can easily transition to low-energy excitons and release energy. When releasing energy, photons are generated to emit light with a wavelength within a certain range. In the case where the organic light-emitting layer is composed of multiple sub-light-emitting layers, the charge generation layer used to connect each sub-light-emitting layer in series is usually made of a material with good conductivity, so that each sub-light-emitting layer can emit light, thereby making the light-emitting effect of the organic light-emitting layer better.

[0050] Since the organic light-emitting layers in the light-emitting devices are uniformly formed by evaporation process, that is, the sub-light-emitting layers and the charge generation layers in each light-emitting device are connected together. Since the charge generation layer has good conductivity, during the light-emitting process of a certain light-emitting device, the charge generation layer in this light-emitting device may generate lateral leakage current, causing the adjacent light-emitting device to emit light. Therefore, it is necessary to set a pixel definition layer between adjacent light-emitting devices, and to set a concave structure on the side of the pixel definition layer close to the light-emitting device to isolate the charge generation layer, thereby isolating the lateral leakage current. However, in the process of forming the organic light-emitting layer, the organic light-emitting layer will be greatly distorted near the concave structure of the pixel definition layer, the internal resistance of the organic light-emitting layer at the distorted location will be reduced, and the current will first pass through the organic light-emitting layer at the distorted location, resulting in a more serious leakage phenomenon.

[0051] Please refer to Figure 1In order to reduce distortion, the display panel in the related art is provided with a protrusion 034 on the side of the pixel definition layer 03 facing the light-emitting device 02. The pixel definition layer 03 may include: a first definition layer 031, a second definition layer 032, and a third definition layer 033 stacked in a direction vertically and away from the driving backplane. The side of the first definition layer 031 facing the light-emitting device 02 protrudes from the side of the second definition layer 032 facing the light-emitting device 02, and the side of the third definition layer 033 facing the light-emitting device 02 also protrudes from the side of the second definition layer 032 facing the light-emitting device 02, thereby forming a concave structure on the side wall of the pixel definition layer 03, and the concave structure can have a better isolation effect on the lateral leakage current.

[0052] like Figure 1 As shown, the side of the first definition layer 031 facing the light emitting device 02 also protrudes from the side of the third definition layer 033 facing the light emitting device 02. Here, the portion of the first definition layer 031 protruding from the second definition layer 032 may be a protrusion 034, that is, the side of the protrusion 034 facing the light emitting device 02 protrudes from the side of the third definition layer 033 facing the light emitting device 02. In this way, in the process of forming the light emitting device 02, the existence of the protrusion 034 makes the formed organic light emitting layer relatively smooth, thereby reducing the distortion of the organic light emitting layer, and further reducing the occurrence of leakage.

[0053] Typically, the light-emitting side of the display panel is also provided with a plurality of color-resistance blocks corresponding to the plurality of light-emitting devices 02 one by one, and the orthographic projection of each light-emitting device 02 on the driving backplane 01 can be located within the orthographic projection of the corresponding color-resistance block on the driving backplane. Here, the plurality of light-emitting devices 02 can be divided into a plurality of different types according to the colors of the color-resistance blocks. For example, when the color of the color-resistance block is red, the light-emitting device 02 corresponding to the red color-resistance block can be a red light-emitting device, and the white light emitted by the red light-emitting device can emit red light after being filtered by the red color-resistance block; when the color of the color-resistance block is green, the light-emitting device 02 corresponding to the green color-resistance block can be a green light-emitting device, and the white light emitted by the green light-emitting device can emit green light after being filtered by the green color-resistance block; when the color of the color-resistance block is blue, the light-emitting device 02 corresponding to the blue color-resistance block can be a blue light-emitting device, and the white light emitted by the blue light-emitting device can emit blue light after being filtered by the green color-resistance block.

[0054] However, in the related art, the shapes of the protrusions 034 corresponding to different types of light-emitting devices are the same, which may result in the protrusions 034 being able to adapt to only a specific type of light-emitting device but not other types of light-emitting devices, which may cause the luminous efficiency of certain light-emitting devices in the display panel to be low, and further cause the overall efficiency of the display panel to be low.

[0055] The present application embodiment provides a display panel that can solve the problem of low overall efficiency of the display panel. Figure 2 and Figure 3 , Figure 2 is a top view of a display panel provided in an embodiment of the present application, Figure 3 yes Figure 2 The schematic diagram of the film structure of the display panel at AA' is shown. The display panel 000 may include: a driving backplane 100, a first electrode layer 200, a pixel definition layer 300, an organic light emitting layer 400 and a second electrode layer 500.

[0056] The first electrode layer 200 may be located at one side of the driving backplane 100 . The first electrode layer 200 may have a plurality of first electrodes 201 that are separately disposed. The plurality of first electrodes 201 may be electrically connected to the driving backplane 100 .

[0057] The pixel definition layer 300 may be located on the side of the first electrode layer 200 away from the driving backplane 100, and the pixel definition layer 300 may have a plurality of pixel openings, and the pixel openings penetrate the pixel definition layer 300 in a direction perpendicular to and away from the driving backplane 100. The plurality of pixel openings may correspond one-to-one to the plurality of first electrodes 201 in the first electrode layer 200, and the orthographic projection of the pixel opening on the driving backplane 100 may be located within the orthographic projection of the corresponding first electrode 201 on the driving backplane 100. In other words, the middle portion of the first electrode 201 may be exposed in the pixel opening, while the edge portion may be covered by the pixel definition layer 300, thereby preventing tip discharge from occurring at the edge portion.

[0058] The organic light-emitting layer 400 may include a plurality of stacked sub-light-emitting layers, and adjacent sub-light-emitting layers may be connected in series via a charge generation layer. The organic light-emitting layer 400 may be manufactured using a whole-layer evaporation process, that is, the sub-light-emitting layers are connected as a whole layer, and the charge generation layer is also connected as a whole layer. The organic light-emitting layer 400 may be located on a side of the pixel definition layer 300 that is away from the driving backplane 100, and the pixel definition layer 300 has a plurality of pixel openings, and part of the organic light-emitting layer 400 may be located in the pixel opening, and the organic light-emitting layer 400 located in the pixel opening may contact the first electrode 201.

[0059] The second electrode layer 500 can be located on the side of the organic light-emitting layer 400 away from the driving backplane 100, that is, the organic light-emitting layer 400 can also contact the second electrode layer 500. In other words, the organic light-emitting layer 400 located in the pixel opening can contact the first electrode 201 and the second electrode layer 500 at the same time, and the organic light-emitting layer 400 located in a pixel opening, and the first electrode 201 and the second electrode layer 500 in contact therewith can serve as a light-emitting device. The first electrode 201 can be an anode, and the second electrode layer 500 can be a cathode. When the first electrode 201 and the second electrode layer 500 are loaded with a corresponding voltage, an electric field will be formed between the first electrode 201 and the second electrode layer 500, and the organic light-emitting layer 400 located in the electric field can emit light, so that the display panel 000 displays the corresponding picture.

[0060] It should be noted that the pixel definition layer 300 may include: a first definition layer 301, a second definition layer 302 and a third definition layer 303 stacked in a direction vertically and away from the driving backplane 100, and the pixel opening passes through the first definition layer 301, the second definition layer 302 and the third definition layer 303 in sequence.

[0061] The side of the first definition layer 301 facing the pixel opening protrudes from the side of the second definition layer 302 facing the pixel opening, and the portion of the first definition layer 301 protruding from the second definition layer 302 is the first protruding portion L1; the side of the third definition layer 303 facing the pixel opening protrudes from the side of the second definition layer 302 facing the pixel opening, and the portion of the third definition layer 303 protruding from the second definition layer 302 is the second protruding portion L2. In this way, a concave structure is formed on the side wall of the pixel definition layer 300 facing the pixel opening, which can isolate at least one layer of the organic light-emitting layer 400, such as the charge generation layer, and can have a good isolation effect on the lateral leakage current.

[0062] In addition, the plurality of pixel openings may include: a plurality of first-type pixel openings K1 and a plurality of second-type pixel openings K2, and the light-emitting devices in the first-type pixel openings K1 may have different performances from the light-emitting devices in the second-type pixel openings K2. The shape of the first protrusion L1 in the first-type pixel openings K1 may be different from the shape of the first protrusion L1 in the second-type pixel openings K2, so that the first protrusion L1 may be better adapted to the light-emitting devices with different performances, thereby improving the light-emitting efficiency of each light-emitting device, and further improving the overall efficiency of the display panel 000.

[0063] In summary, the embodiment of the present application provides a display panel, in which the side of the first definition layer facing the pixel opening protrudes beyond the side of the second definition layer facing the pixel opening, and the side of the third definition layer facing the pixel opening protrudes beyond the side of the second definition layer facing the pixel opening. In this way, a concave structure is formed on the side wall of the pixel definition layer facing the pixel opening, which can isolate at least one layer of the organic light-emitting layer, such as the charge generation layer, and can have a good isolation effect on the lateral leakage current, thereby ensuring that the display panel can achieve a good display effect. At the same time, the shape of the first protrusion located in the first type of pixel opening is different from the shape of the first protrusion located in the second type of pixel opening, so that the first protrusion can better adapt to the light-emitting devices in different pixel openings, improve the efficiency of each light-emitting device, and make the light-emitting efficiency of each light-emitting device more balanced, thereby improving the overall efficiency of the display panel.

[0064] Please refer to Figure 3 , the side wall of the pixel definition layer 300 near the pixel opening may have a concave structure. In order to ensure the formation of the concave structure, the first definition layer 301 and the second definition layer 302 may be prepared by using different materials, and the third definition layer 303 and the second definition layer 302 may also be prepared by using different materials. For example, the first definition layer 301 and the third definition layer 303 may be made of silicon oxide material, and the second definition layer 302 may be made of silicon nitride material. In this way, according to the different etching rates of the etching material on the first definition layer 301 and the second definition layer 302, the first definition layer 301 can be protruded from the second definition layer 302, and according to the different etching rates of the etching material on the third definition layer 303 and the second definition layer 302, the third definition layer 303 can be protruded from the second definition layer 302, and then the concave structure can be formed on the side wall of the pixel definition layer 300.

[0065] Please refer to Figure 4 The display panel 000 may further include an encapsulation layer 600 and a color filter layer 700 .

[0066] The encapsulation layer 600 may be located on the side of the second electrode layer 500 away from the driving backplane 100 . The encapsulation layer 600 may be used to protect the light-emitting device located in the pixel opening to prevent water and oxygen in the external environment from entering the light-emitting device and causing the organic light-emitting layer 400 to fail.

[0067] The color filter layer 700 may be located on the side of the encapsulation layer 600 away from the driving backplane 100. The color filter layer 700 may include a plurality of color resist blocks, and the plurality of color resist blocks may correspond to the plurality of pixel openings one by one, and the orthographic projection of the pixel opening on the driving backplane 100 may be located within the orthographic projection of the corresponding color resist block on the driving backplane 100. In this way, the light emitted by the light emitting device in the pixel opening may selectively pass through the corresponding color resist block and then be emitted, so that light of a desired color may be obtained.

[0068] Among them, the multiple color resist blocks may include multiple blue color resist blocks B, multiple red color resist blocks R and multiple green color resist blocks G. The multiple first-type pixel openings K1 may all be blue pixel openings, and the multiple second-type pixel openings K2 may include multiple red pixel openings and multiple green pixel openings. The orthographic projection of the blue pixel opening on the driving backplane 100 may be located within the orthographic projection of the blue color resist block B on the driving backplane 100, the orthographic projection of the red pixel opening on the driving backplane 100 may be located within the orthographic projection of the red color resist block R on the driving backplane 100, and the orthographic projection of the green pixel opening on the driving backplane 100 may be located within the orthographic projection of the green color resist block G on the driving backplane 100. In this way, the light emitted by the light-emitting devices in the pixel openings of different colors of red, green and blue can selectively pass through the corresponding color resist blocks, thereby filtering out light of other colors and obtaining light of the color required by the pixel opening.

[0069] It should be noted that the organic light-emitting layer 400 may include a first light-emitting layer, a second light-emitting layer, and a charge generation layer located therebetween, and the second light-emitting layer is closer to the driving backplane 100 than the first light-emitting layer. The first light-emitting layer may be configured to emit blue light, and the second light-emitting layer may be configured to emit yellow light. Specifically, the second light-emitting layer may be a light-emitting layer that emits red light and a light-emitting layer that emits green light. For the first type of pixel opening K1, the first type of pixel opening K1 may be a blue pixel opening, and the required blue light may be emitted by the first light-emitting layer. For the second type of pixel opening K2, the second type of pixel opening K2 may include a red pixel opening and a green pixel opening, and the red light required for the red pixel opening and the green light required for the green pixel opening may both be emitted by the light-emitting layer in the second light-emitting layer.

[0070] Thus, the organic light emitting layer 400 is stacked with a second light emitting layer capable of emitting yellow light and a first light emitting layer capable of emitting blue light, which are connected in series via a charge generating layer in between, so that the organic light emitting layer 400 can emit white light.

[0071] White light selectively passes through the color blocks corresponding to different pixel openings, so that red, green and blue light can be obtained. Specifically, the white light emitted by the light-emitting device located in the blue pixel opening can select blue light after passing through the corresponding blue color block B; the white light emitted by the light-emitting device located in the red pixel opening can select red light after passing through the corresponding red color block R; the white light emitted by the light-emitting device located in the green pixel opening can select green light after passing through the corresponding green color block G. In this way, the obtained red, green and blue light enables the display panel 000 to display the corresponding picture.

[0072] It should be noted that when the organic light-emitting layer 400 is distorted, the internal resistance of the distorted part is small. At a lower grayscale, the current will preferentially pass through the distorted part of the organic light-emitting layer 400, allowing the distorted part to emit light. When the first protrusion L1 located in the pixel opening protrudes from the side of the pixel opening toward the second protrusion L2 toward the pixel opening, the distortion of the organic light-emitting layer 400 may usually occur on the side of the first protrusion L1 away from the driving backplane 100. The second light-emitting layer in this part of the organic light-emitting layer 400 is not in contact with the first electrode 201, so this part of the second light-emitting layer may not emit light, and only the distorted part of the first light-emitting layer will emit light, resulting in the light-emitting device located in the pixel opening emitting blue light when the start-up voltage is not reached, causing the start-up voltage to be low, resulting in poor display effect. If the organic light-emitting layer 400 located in the first type of pixel opening K1 is distorted, the emitted blue light will be emitted through the corresponding blue color block B, which will cause the display screen to be blue at a lower grayscale.

[0073] To this end, the light-emitting devices in the pixel openings of different colors have different performances, and in the present application, the shape of the first protrusion L1 located in the pixel opening is differentially designed to adapt to light-emitting devices with different performances. There are multiple implementation methods for differentially designing the shape of the first protrusion L1 located in the first type of pixel opening K1 and the shape of the first protrusion L1 located in the second type of pixel opening K2. The present application embodiment will take the following three implementation methods as examples for schematic illustration.

[0074] In a first implementation, the length of the first protrusion L1 located in the first type of pixel opening K1 and the length of the first protrusion L1 located in the second type of pixel opening K2 are designed to be different. Figures 5 to 7 The different lengths of the first protrusion L1 protruding from the second protrusion L2 in the pixel opening have a great influence on the degree of distortion of the organic light-emitting layer 400 in the pixel opening, thereby affecting the occurrence of leakage and further affecting the light-emitting efficiency of the light-emitting device.

[0075] Figure 5 In the embodiment, the side of the first protrusion L1 facing the pixel opening is flush with the side of the second protrusion L2 facing the pixel opening. At this time, the organic light emitting layer 400 is severely distorted and the leakage phenomenon is also severe. Figure 6 and Figure 7 In the embodiment, the side of the first protrusion L1 facing the pixel opening is protruding beyond the side of the second protrusion L2 facing the pixel opening, but Figure 6 The length of the first protrusion L1 protruding from the second protrusion L2 is relatively short. Figure 7 The length of the first protrusion L1 protruding from the second protrusion L2 is relatively long. As can be seen from the figure, Figure 7 The degree of distortion of the organic light emitting layer 400 is lower than Figure 6 The degree of distortion of the organic light emitting layer 400 in Figure 6 The degree of distortion of the organic light emitting layer 400 is lower than Figure 5 The distortion degree of the organic light emitting layer 400 in the embodiment of the present invention is determined by the first projection L1. That is, within a certain range, as the length of the first projection L1 protruding from the second projection L2 increases, the degree of distortion of the organic light emitting layer 400 decreases. Therefore, by controlling the length of the first projection L1 protruding from the second projection L2, the degree of distortion can be adjusted, thereby improving the luminous efficiency of the light emitting device.

[0076] Based on this, please refer to Figure 8 and Fig. 9 , the length of the first protrusion L1 located in the first type of pixel opening K1 protruding from the second definition layer 302 may be greater than the length of the first protrusion L1 located in the second type of pixel opening K2 protruding from the second definition layer 302; and the height H1 of the first protrusion L1 located in the first type of pixel opening K1 in the direction perpendicular to the driving backplane 100 may be equal to the height H2 of the first protrusion L1 located in the second type of pixel opening K2 in the direction perpendicular to the driving backplane 100. In addition, the length of the second protrusion L2 located in the first type of pixel opening K1 protruding from the second definition layer 302 may be equal to the length of the second protrusion L2 located in the second type of pixel opening K2 protruding from the second definition layer 302. Here, there are also multiple ways to design the length of the first protrusion L1 and the second protrusion L2 located in the first type of pixel opening K1, and the length of the first protrusion L1 and the second protrusion L2 located in the second type of pixel opening K2. The embodiments of the present application are described by taking the following two cases as examples:

[0077] In the first case, please refer to Figure 8 For the first protrusion L1 and the second protrusion L2 located in the first type pixel opening K1, the side of the first protrusion L1 facing the first type pixel opening K1 may protrude beyond the side of the second protrusion L2 facing the first type pixel opening K1. For the first protrusion L1 and the second protrusion L2 located in the second type pixel opening K2, the side of the first protrusion L1 facing the second type pixel opening K2 may be flush with the side of the second protrusion L2 facing the second type pixel opening K2.

[0078] For the first protrusion L1 and the second protrusion L2 located in the first type of pixel opening K1, the first protrusion L1 can protrude from the second protrusion L2, and the protruding portion of the first protrusion L1 relative to the second protrusion L2 can make the formed organic light-emitting layer 400 smoother, especially the formed first light-emitting layer smoother, which can reduce the distortion of the first light-emitting layer and make the film layer smoother, thereby reducing the occurrence of leakage in the distorted part, and further improving the transfer rate of electrons and holes, thereby ensuring the luminous efficiency of the light-emitting device located in the first type of pixel opening K1.

[0079] For the first protrusion L1 and the second protrusion L2 located in the second type pixel opening K2, the first protrusion L1 may not protrude from the second protrusion L2, that is, compared with the first protrusion L1 in the first type pixel opening K1, the length of the first protrusion L1 in the second type pixel opening K2 in the direction close to the pixel opening is shorter, so that the exposed portion of the first electrode 201 corresponding to the second type pixel opening K2 is larger. In this way, the second light-emitting layer located in the second type pixel opening K2 contacts the first electrode 201 more, so that the second light-emitting layer can be used for a larger area of ​​light emission, thereby improving the light-emitting efficiency of the light-emitting device located in the second type pixel opening K2. At the same time, the length of the first protrusion L1 is relatively short, resulting in a more serious distortion of the first light-emitting layer located on the side of the first protrusion L1 away from the driving backplane 100. The distorted part of the first light-emitting layer has serious leakage and emits blue light, but the blue light cannot pass through the red color block R or the green color block G corresponding to the second type of pixel opening K2, and therefore will not affect the display image of the display panel 000.

[0080] To this end, the first protrusion L1 located in the first type of pixel opening K1 can be adapted to the light-emitting device located in the first type of pixel opening K1, and the first protrusion L1 located in the second type of pixel opening K2 can be adapted to the light-emitting device located in the second type of pixel opening K2. In this way, the luminous efficiency of the light-emitting devices located in different pixel openings can be improved, and the luminous efficiency of each light-emitting device is more balanced, thereby improving the overall efficiency of the display panel 000, and also achieving a better display effect.

[0081] In the second case, please refer to Fig. 9, for the first protrusion L1 and the second protrusion L2 located in the first type pixel opening K1, the side of the first protrusion L1 facing the first type pixel opening K1 may protrude beyond the side of the second protrusion L2 facing the first type pixel opening K1, and the length of the first protrusion L1 protruding from the second protrusion L2 is the first length X1. For the first protrusion L1 and the second protrusion L2 located in the second type pixel opening K2, the side of the first protrusion L1 facing the second type pixel opening K2 may protrude beyond the side of the second protrusion L2 facing the second type pixel opening K2, and the length of the first protrusion L1 protruding from the second protrusion L2 is the second length X2. Among them, the first length X1 may be greater than the second length X2.

[0082] Compared with the length of the first protrusion L1 protruding from the second protrusion L2 in the second type pixel opening K2, the length of the first protrusion L1 protruding from the second protrusion L2 in the first type pixel opening K1 can be longer. Therefore, the organic light-emitting layer 400 in the first type pixel opening K1 can be formed more gently, especially the first light-emitting layer formed can be more gentle, which can reduce the distortion of the first light-emitting layer, make the film layer flatter, reduce the leakage of the distorted part, and thus reduce the phenomenon of blue light emitted by the distorted part, and to a certain extent, can avoid the problem of blue display screen at lower gray scale. At the same time, the distortion is reduced, the leakage is reduced, and the transfer rate of electrons and holes can be improved, thereby ensuring the luminous efficiency of the light-emitting device in the first type pixel opening K1.

[0083] Compared with the length of the first protrusion L1 protruding from the second protrusion L2 in the first type pixel opening K1, the length of the first protrusion L1 protruding from the second protrusion L2 in the second type pixel opening K2 can be shorter, that is, the length of the first protrusion L1 in the second type pixel opening K2 in the direction close to the second type pixel opening K2 is shorter, so that the exposed portion of the first electrode 201 corresponding to the second type pixel opening K2 is larger. In this way, the second light-emitting layer in the second type pixel opening K2 contacts with the first electrode 201 more, and the second light-emitting layer can be used for emitting light in a larger area, thereby improving the light-emitting efficiency of the light-emitting device in the second type pixel opening K2.

[0084] To this end, the first protrusions L1 located in different types of pixel openings are set to different lengths, which can better adapt to the light-emitting devices located in different types of pixel openings. In this way, the luminous efficiency of each light-emitting device can be improved, thereby improving the overall efficiency of the display panel 000, and at the same time, the problem of blue display screen at lower grayscales can be avoided to a certain extent.

[0085] Preferably, the first length X1 may be 0.01 micron to 0.02 micron, that is, the length of the first protrusion L1 protruding from the second protrusion L2 in the first type pixel opening K1 may be 0.01 micron to 0.02 micron. The second length X2 may be less than or equal to 0.01 micron, that is, the length of the first protrusion L1 protruding from the second protrusion L2 in the second type pixel opening K2 may be less than or equal to 0.01 micron.

[0086] In this way, the first protrusion L1 can better adapt to the light-emitting devices located in different pixel openings, thereby improving the light-emitting efficiency of each light-emitting device. At the same time, the problem of premature lighting of blue light can be avoided to a certain extent, thereby adjusting the lighting sequence of pixels of each color, avoiding low lighting voltage, and enabling the display panel 000 to achieve a better display effect.

[0087] For the second implementation, please refer to Fig.10 , the height H1 of the first protrusion L1 in the first type pixel opening K1 in the direction perpendicular to the driving backplane 100 may be less than the height H2 of the first protrusion L1 in the second type pixel opening K2 in the direction perpendicular to the driving backplane 100. The length of the first protrusion L1 in the first type pixel opening K1 protruding from the second definition layer 302 may be equal to the length of the first protrusion L1 in the second type pixel opening K2 protruding from the second definition layer 302. In addition, the length of the second protrusion L2 in the first type pixel opening K1 protruding from the second definition layer 302 may be equal to the length of the second protrusion L2 in the second type pixel opening K2 protruding from the second definition layer 302.

[0088] Compared with the height H2 of the first protrusion L1 in the second type pixel opening K2 in the direction perpendicular to the driving backplane 100, the height H1 of the first protrusion L1 in the first type pixel opening K1 in the direction perpendicular to the driving backplane 100 is smaller. In this way, the leakage path in the first type pixel opening K1 can be regulated so that the second light-emitting layer has distorted leakage, while the first light-emitting layer does not leak. In this way, the transfer rate of electrons and holes in the first light-emitting layer can be guaranteed, thereby ensuring the blue light emitting efficiency of the light-emitting device in the first type pixel opening K1. The distorted part of the second light-emitting layer will emit yellow light, and the emitted yellow light cannot pass through the blue color block B corresponding to the first type pixel opening K1, so the problem of yellowing of the display screen at a lower grayscale can also be avoided.

[0089] Compared to the height H1 of the first protrusion L1 in the first type pixel opening K1 in the direction perpendicular to the driving backplane 100, the height H2 of the first protrusion L1 in the second type pixel opening K2 in the direction perpendicular to the driving backplane 100 is greater. In this way, the leakage path in the second type pixel opening K2 can be regulated so that the first light-emitting layer has distorted leakage, while the second light-emitting layer does not leak. In this way, the transfer rate of electrons and holes in the second light-emitting layer can be guaranteed, thereby ensuring the red light emitting efficiency or green light emitting efficiency of the light-emitting device in the second type pixel opening K2. The distorted part of the first light-emitting layer will emit blue light, and the emitted blue light cannot pass through the red color block R or the green color block G corresponding to the second type pixel opening K2, so the problem of blue display at a lower grayscale can also be avoided.

[0090] Preferably, the height H1 of the first protrusion L1 in the first type pixel opening K1 in the direction perpendicular to the driving backplane 100 is in the range of less than or equal to 350 angstroms, and the height H2 of the first protrusion L1 in the second type pixel opening K2 in the direction perpendicular to the driving backplane 100 is in the range of 400 angstroms to 500 angstroms. In this way, the first protrusion L1 can better adapt to the light-emitting devices in different pixel openings.

[0091] To this end, the first protrusions L1 located in different types of pixel openings are set at different heights, which can better adapt to the light-emitting devices located in different types of pixel openings. In this way, the luminous efficiency of each light-emitting device can be improved, thereby improving the overall efficiency of the display panel 000, and also enabling the display panel 000 to achieve a better display effect.

[0092] For the third implementation method, please refer to Fig.11 , the length of the first protrusion L1 located in the first type pixel opening K1 protruding from the second definition layer 302 may be greater than the length of the first protrusion L1 located in the second type pixel opening K2 protruding from the second definition layer 302. The height H1 of the first protrusion L1 located in the first type pixel opening K1 in the direction perpendicular to the driving backplane 100 may be less than the height H2 of the first protrusion L1 located in the second type pixel opening K2 in the direction perpendicular to the driving backplane 100. In addition, the length of the second protrusion L2 located in the first type pixel opening K1 protruding from the second definition layer 302 may be equal to the length of the second protrusion L2 located in the second type pixel opening K2 protruding from the second definition layer 302.

[0093] For the first protrusion L1 located in the first type of pixel opening K1, the height H1 of the first protrusion L1 in the direction perpendicular to the driving backplane 100 is smaller, and the leakage path in the first type of pixel opening K1 is adjusted to the second light-emitting layer distortion leakage, and the yellow light emitted by the distorted part of the second light-emitting layer cannot pass through the blue color block B corresponding to the first type of pixel opening K1, thereby avoiding the problem of yellowing of the display screen at a lower grayscale. At the same time, the first protrusion L1 located in the first type of pixel opening K1 protrudes from the second protrusion L2, and the protruding part of the first protrusion L1 relative to the second protrusion L2 can make the formed organic light-emitting layer 400 smoother, thereby reducing the distortion of the second light-emitting layer, making the film layer more flat, reducing the occurrence of leakage, thereby improving the transfer rate of electrons and holes, and further ensuring the blue light emitting efficiency of the light-emitting device located in the first type of pixel opening K1.

[0094] For the first protrusion L1 located in the second type pixel opening K2, the height H1 of the first protrusion L1 in the direction perpendicular to the driving backplane 100 is greater, and the leakage path in the second type pixel opening K2 is adjusted to the first light-emitting layer distortion leakage, and the blue light emitted by the distorted part of the first light-emitting layer cannot pass through the red color block R or the green color block G corresponding to the second type pixel opening K2, thereby avoiding the problem of blue display screen at a lower gray scale. At the same time, the first protrusion L1 located in the second type pixel opening K2 may not protrude from the second protrusion L2, or the first protrusion L1 may protrude from the second protrusion L2, but the protrusion length of the first protrusion L1 relative to the second protrusion L2 is shorter. In this way, the exposed portion of the first electrode 201 corresponding to the second type pixel opening K2 is more, and the second light-emitting layer located in the second type pixel opening K2 is in contact with the first electrode 201. Therefore, the second light-emitting layer can be used for a larger area of ​​​​light emission, thereby improving the red light emitting efficiency or green light emitting efficiency of the light-emitting device located in the second type pixel opening K2.

[0095] To this end, the first protrusions L1 located in different types of pixel openings are set with different lengths and heights, which can better adapt to the light-emitting devices located in different types of pixel openings. In this way, the luminous efficiency of each light-emitting device can be improved, thereby improving the overall efficiency of the display panel 000, and also enabling the display panel 000 to achieve a better display effect.

[0096] It should be noted that the above embodiments are schematically described by taking the second light emitting layer for emitting yellow light in the organic light emitting layer 400 as an example that is closer to the driving backplane 100 than the first light emitting layer for emitting blue light. In other possible implementations, the second light emitting layer for emitting yellow light in the organic light emitting layer 400 can be farther away from the driving backplane 100 than the first light emitting layer for emitting blue light. In this case, it is necessary to ensure that the length of the first protrusion L1 located in the second type of pixel opening K2 is longer in the direction close to the second type of pixel opening K2, while the length of the first protrusion L1 located in the first type of pixel opening K1 is shorter in the direction close to the first type of pixel opening K1; and / or, it is necessary to ensure that the height of the first protrusion L1 located in the second type of pixel opening K2 is smaller in the direction perpendicular to the driving backplane 100, while the height of the first protrusion L1 located in the first type of pixel opening K1 is larger in the direction perpendicular to the driving backplane 100.

[0097] It should also be noted that, after verification by the inventor, the technical solution provided in the embodiment of the present application is applicable to the display panel 000 with a weak microcavity structure, wherein the material of the second electrode layer 500 may be indium tin oxide or indium zinc oxide; the technical solution provided in the embodiment of the present application is also applicable to the display panel 000 with a strong microcavity structure, wherein the material of the second electrode layer 500 may be magnesium or silver.

[0098] In summary, the embodiment of the present application provides a display panel, in which the side of the first definition layer facing the pixel opening protrudes beyond the side of the second definition layer facing the pixel opening, and the side of the third definition layer facing the pixel opening protrudes beyond the side of the second definition layer facing the pixel opening. In this way, a concave structure is formed on the side wall of the pixel definition layer facing the pixel opening, which can isolate at least one layer of the organic light-emitting layer, such as the charge generation layer, and can have a good isolation effect on the lateral leakage current, thereby ensuring that the display panel can achieve a good display effect. At the same time, the shape of the first protrusion located in the first type of pixel opening is different from the shape of the first protrusion located in the second type of pixel opening, so that the first protrusion can better adapt to the light-emitting devices in different pixel openings, improve the efficiency of each light-emitting device, and make the light-emitting efficiency of each light-emitting device more balanced, thereby improving the overall efficiency of the display panel.

[0099] An embodiment of the present application also provides a display device, which can be: AR (Augmented Reality), VR (Virtual Reality), mobile phones, tablet computers, televisions, monitors, laptops, digital photo frames, navigators, and any other products or components with display functions.

[0100] The display device may include: a driving chip and a display panel. The display panel may be a silicon-based OLED display panel. The display panel may be the display panel 000 in the above embodiment, and the driving chip may be electrically connected to the display panel 000, so as to drive the display panel 000 to display a picture.

[0101] It should be noted that in the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It is also understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it is understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it may be the only layer between the two layers or two elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0102] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0103] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that: include: A driving backplane, a first electrode layer, a pixel definition layer, an organic light emitting layer, and a second electrode layer; The first electrode layer is located at one side of the driving backplane, and the first electrode layer has a plurality of first electrodes that are separately arranged, and the first electrodes are electrically connected to the driving backplane; The pixel definition layer is located on a side of the first electrode layer away from the driving backplane, and the pixel definition layer has a plurality of pixel openings, and the plurality of pixel openings include: a plurality of first-type pixel openings and a plurality of second-type pixel openings; The organic light emitting layer is located on a side of the pixel definition layer away from the driving backplane; The second electrode layer is located on a side of the organic light emitting layer away from the driving backplane; The pixel definition layer comprises: a first definition layer, a second definition layer and a third definition layer stacked in a direction vertically and away from the driving backplane, and the pixel opening sequentially penetrates the first definition layer, the second definition layer and the third definition layer; A side of the first definition layer facing the pixel opening protrudes beyond a side of the second definition layer facing the pixel opening, and a portion of the first definition layer protruding from the second definition layer is a first protruding portion; a side of the third definition layer facing the pixel opening protrudes beyond a side of the second definition layer facing the pixel opening, and a portion of the third definition layer protruding from the second definition layer is a second protruding portion; The shape of the first protrusion located in the first type of pixel opening is different from the shape of the first protrusion located in the second type of pixel opening.

2. The display panel according to claim 1, characterized in that: The length of the first protrusion located in the first type pixel opening protruding from the second definition layer is greater than the length of the first protrusion located in the second type pixel opening protruding from the second definition layer.

3. The display panel according to claim 2, characterized in that: For the first protrusion and the second protrusion located in the first type of pixel opening, a side of the first protrusion facing the first type of pixel opening protrudes more than a side of the second protrusion facing the first type of pixel opening; For the first protrusion and the second protrusion located in the second type pixel opening, a side of the first protrusion facing the second type pixel opening is flush with a side of the second protrusion facing the second type pixel opening.

4. The display panel according to claim 2, characterized in that: For the first protrusion and the second protrusion located in the first type of pixel opening, the first protrusion faces a side of the first type of pixel opening and protrudes beyond a side of the second protrusion facing the first type of pixel opening, and a length by which the first protrusion protrudes beyond the second protrusion is a first length; For the first protrusion and the second protrusion located in the second type pixel opening, the first protrusion faces a side of the second type pixel opening and protrudes beyond a side of the second protrusion facing the second type pixel opening, and a length by which the first protrusion protrudes beyond the second protrusion is a second length; Wherein, the first length is greater than the second length.

5. The display panel according to claim 4, characterized in that: The first length ranges from 0.01 micrometer to 0.02 micrometer, and the second length ranges from less than or equal to 0.01 micrometer.

6. The display panel according to any one of claims 2 to 5, characterized in that: The height of the first protrusion located in the first type pixel opening in a direction perpendicular to the driving backplane is equal to the height of the first protrusion located in the second type pixel opening in a direction perpendicular to the driving backplane.

7. The display panel according to claim 1, characterized in that: A height of the first protrusion located in the first type pixel opening in a direction perpendicular to the driving backplane is smaller than a height of the first protrusion located in the second type pixel opening in a direction perpendicular to the driving backplane.

8. The display panel according to claim 7, characterized in that: The height of the first protrusion located in the first type pixel opening in a direction perpendicular to the driving backplane ranges from 350 angstroms to less than or equal to 350 angstroms, and the height of the first protrusion located in the second type pixel opening in a direction perpendicular to the driving backplane ranges from 400 angstroms to 500 angstroms.

9. The display panel according to claim 7 or 8, characterized in that: The length of the first protrusion located in the first type pixel opening protruding from the second definition layer is equal to the length of the first protrusion located in the second type pixel opening protruding from the second definition layer.

10. The display panel according to claim 1, characterized in that: The length of the first protrusion located in the first type of pixel opening protruding from the second definition layer is greater than the length of the first protrusion located in the second type of pixel opening protruding from the second definition layer; Furthermore, a height of the first protrusion located in the first type pixel opening in a direction perpendicular to the driving backplane is smaller than a height of the first protrusion located in the second type pixel opening in a direction perpendicular to the driving backplane.

11. The display panel according to any one of claims 1 to 5, 7 to 8, and 10, characterized in that: The display panel also includes an encapsulation layer and a color filter layer; the encapsulation layer is located on the side of the second electrode layer away from the driving backplane; the color filter layer is located on the side of the encapsulation layer away from the driving backplane, and the color filter layer includes: a plurality of color resist blocks corresponding one to one with the pixel openings, and the orthographic projection of the pixel opening on the driving backplane is located within the orthographic projection of the corresponding color resist block on the driving backplane.

12. The display panel according to claim 11, characterized in that: The plurality of color resist blocks include a plurality of blue color resist blocks, a plurality of red color resist blocks and a plurality of green color resist blocks; Among them, the multiple first-type pixel openings are all blue pixel openings, and the orthographic projections of the blue pixel openings on the driving backplane are located within the orthographic projections of the blue color resist block on the driving backplane; the second-type pixel openings include multiple red pixel openings and multiple green pixel openings, the orthographic projections of the red pixel openings on the driving backplane are located within the orthographic projections of the red color resist block on the driving backplane, and the orthographic projections of the green pixel openings on the driving backplane are located within the orthographic projections of the green color resist block on the driving backplane.

13. The display panel according to claim 12, characterized in that: The organic light-emitting layer includes a first light-emitting layer, a second light-emitting layer and a charge generation layer located between the first light-emitting layer and the second light-emitting layer; The second light-emitting layer is closer to the driving backplane than the first light-emitting layer; the first light-emitting layer is configured to emit blue light, and the second light-emitting layer is configured to emit yellow light.

14. A display device, characterized in that: It comprises a driving chip and a display panel electrically connected to the driving chip, wherein the display panel comprises the display panel according to any one of claims 1 to 13.

Images