Display panel and display apparatus

Abstract

The present application belongs to the technical field of display. Disclosed are a display panel and a display apparatus. The display panel comprises a drive backplane, a first electrode layer, a filling layer, a support pad layer, a partition layer, an organic light-emitting layer, and a second electrode layer, wherein the support pad layer is located on the side of the filling layer facing away from the drive backplane; the side of the filling layer facing away from the drive backplane has a first height difference, and the side of the support pad layer facing away from the drive backplane has a second height difference, the second height difference being less than the first height difference; and the partition layer is located on the side of the support pad layer facing away from the drive backplane, and partition grooves are provided on the side of the partition layer facing away from the drive backplane. In this way, the side of the support pad layer facing away from the drive backplane has relatively good flatness, thereby ensuring a relatively consistent partition effect of the partition grooves on the organic light-emitting layer. Moreover, the filling layer and the support pad layer can lift the partition layer, thereby increasing the minimum distance between a puncture and first electrodes, reducing the risk of current leakage due to puncture, and ameliorating the phenomenon of uneven light emission of the display panel.

Description

Display panel and display device

[0001] This application claims priority to Chinese Patent Application No. 202510112984.0, filed on January 23, 2025, entitled “Display Panel and Display Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of display technology, and in particular to a display panel and display device. Background Technology

[0003] Organic light-emitting diodes (OLEDs) are current-driven organic light-emitting devices. OLED display panels are widely used in the display field due to their advantages such as thinness, self-illumination, high resolution, and fast response speed. In particular, silicon-based OLED display panels, with their small pixel size and high pixel density, can be widely used in display products with high resolution and small size requirements, such as augmented reality (AR) devices and virtual reality (VR) devices.

[0004] A silicon-based OLED display panel typically includes a driving backplane and multiple light-emitting devices located on the driving backplane. Each light-emitting device includes a first electrode layer, an organic light-emitting layer, and a second electrode layer stacked along a direction away from the driving backplane. The second electrode layer is usually a single, continuous layer; that is, the second electrode layers of multiple light-emitting devices are connected together. The periphery of the second electrode layer can be electrically connected to an auxiliary electrode ring, which can receive a cathode signal. Therefore, the second electrode layer can receive a cathode signal through the auxiliary electrode ring.

[0005] However, due to the high resistance of the second electrode layer and the long transmission path of the cathode signal, the attenuation of the cathode signal is more significant the farther away from the auxiliary electrode ring. This results in the cathode signal at a distance farther from the auxiliary electrode ring being different from the cathode signal at a distance closer to the auxiliary electrode ring, which can easily cause uneven light emission in silicon-based OLED display panels. Summary of the Invention

[0006] This application provides a display panel and display device that can solve the problem of uneven light emission in silicon-based OLED display panels. The technical solution is as follows:

[0007] On one hand, a display panel is provided, including: a driving backplate, a first electrode layer, a filling layer, a support pad layer, a partition layer, an organic light-emitting layer, and a second electrode layer;

[0008] The first electrode layer is located on one side of the drive back plate, and the first electrode layer has a plurality of separately disposed first electrodes, which are electrically connected to the drive back plate.

[0009] The filling layer is located on the side of the drive backplate having the first electrode layer and is distributed between two adjacent first electrodes;

[0010] The support pad layer is located on the side of the filling layer away from the driving back plate, and the support pad layer is used to form a plurality of first pixel openings. The orthographic projection of the filling layer on the driving back plate is located within the orthographic projection of the support pad layer on the driving back plate.

[0011] The partition layer is located on the side of the support pad layer opposite to the drive back plate, and the side of the partition layer opposite to the drive back plate has a partition groove.

[0012] The organic light-emitting layer is located on the side of the partition layer opposite to the drive backplate;

[0013] The second electrode layer is located on the side of the organic light-emitting layer opposite to the driving backplate;

[0014] The filling layer has a first height difference on the side opposite to the drive back plate, and the support pad layer has a second height difference on the side opposite to the drive back plate, wherein the second height difference is smaller than the first height difference.

[0015] Optionally, the portion of the second electrode layer covering the partition groove has a third height difference on the side facing away from the drive backplate, the third height difference being greater than or equal to the second height difference and less than or equal to 1.5 times the second height difference.

[0016] Optionally, the angle between the inner wall of the first pixel opening and the side of the support pad layer facing the drive backplate is an acute angle.

[0017] Optionally, in a direction perpendicular to the drive backplate, the thickness of the support pad layer is greater than or equal to 0.3 times the thickness of the organic light-emitting layer, and less than or equal to the thickness of the organic light-emitting layer.

[0018] Optionally, the distance between the side of the second electrode layer covering the partition groove that is away from the driving back plate and the driving back plate is greater than the distance between the side of the second electrode layer covering the first pixel opening that is away from the driving back plate and the driving back plate.

[0019] Optionally, the partition layer is used to form a plurality of second pixel openings, the plurality of second pixel openings being connected to the plurality of first pixel openings, and the angle between the inner wall of the second pixel opening and the side of the partition layer facing the drive back plate being an acute angle.

[0020] Optionally, the orthographic projection of the partition layer on the drive back plate lies within the orthographic projection of the support pad layer on the drive back plate.

[0021] Optionally, in a direction parallel to the drive backplate, the absolute value of the difference between the maximum width of the partition layer between two adjacent second pixel openings and the minimum width of the support pad layer between two adjacent first pixel openings is less than or equal to 0.6 micrometers.

[0022] Optionally, in a direction perpendicular to the drive back plate, the depth of the partition groove is less than or equal to the thickness of the partition layer.

[0023] Optionally, the display panel further includes: an auxiliary support pad layer, the auxiliary support pad layer being located on the side of the support pad layer opposite to the drive back plate;

[0024] The orthographic projection of the partition groove on the drive back plate is located within the orthographic projection of the auxiliary support layer on the drive back plate.

[0025] Optionally, the angle between the inner wall of the partition groove and the bottom surface of the partition groove is an acute angle;

[0026] Alternatively, the angle between the inner wall of the partition groove and the bottom surface of the partition groove is an obtuse angle;

[0027] Alternatively, the inner wall of the partition groove has a concave structure.

[0028] Optionally, the support pad layer covers the edge portion of the first electrode.

[0029] Optionally, the display panel has: a display area and a non-display area located around the periphery of the display area; wherein the first electrode layer, the filling layer, the support pad layer, the partition layer, the organic light-emitting layer and the second electrode layer are all located at least within the display area;

[0030] The drive backplate has an auxiliary electrode ring located in the non-display area, the auxiliary electrode ring being disposed around the display area, and the portion of the second electrode layer located in the non-display area being electrically connected to the auxiliary electrode ring.

[0031] Optionally, the display panel further includes an encapsulation layer and a filter layer;

[0032] The encapsulation layer is located on the side of the second electrode layer opposite to the drive backplate;

[0033] The filter layer is located on the side of the encapsulation layer opposite to the drive backplate.

[0034] On the other hand, a display device is provided, including a driver chip and any of the above-described display panels, wherein the driver chip is electrically connected to the display panel.

[0035] The beneficial effects of the technical solution provided in this application include at least the following:

[0036] The side of the support pad layer facing away from the driving backplate of this display panel is flatter than the side of the fill layer facing away from the driving backplate. This allows the partition layer to be formed on a relatively flat film layer, ensuring a more consistent partitioning effect of the partition groove on the organic light-emitting layer. Simultaneously, the fill layer and support pad layer between the partition layer and the driving backplate can lift the partition layer, increasing the distance between them. This lifts the portion of the second electrode layer covering the partition groove, further lifting the puncture formed in the second electrode layer, increasing the minimum distance between the puncture and the first electrode, and reducing the risk of puncture leakage. This reduces the transmission loss of the cathode signal in the second electrode layer, improves the uneven light emission of the display panel, enhances the brightness uniformity of the display panel, and, due to the reduced risk of puncture leakage, results in more balanced luminous efficiency of the sub-light-emitting layers of different colors, thereby improving the gamma yield of the display panel and achieving excellent display effects. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 is a schematic diagram of the film layer structure of a display panel provided by related technologies;

[0039] Figure 2 is a schematic diagram of the film layer structure of a display panel provided in an embodiment of this application;

[0040] Figure 3 is a schematic diagram of the film layer structure of another display panel provided in an embodiment of this application;

[0041] Figure 4 is a schematic diagram of the film layer structure of another display panel provided in an embodiment of this application;

[0042] Figure 5 is a schematic diagram of the film layer structure of another display panel provided in an embodiment of this application;

[0043] Figure 6 is a structural schematic diagram of a support pad and a partition layer provided in an embodiment of this application;

[0044] Figure 7 is a schematic diagram of another support pad and partition layer provided in an embodiment of this application;

[0045] Figure 8 is a structural schematic diagram of another support pad and partition layer provided in an embodiment of this application;

[0046] Figure 9 is a schematic diagram of the film layer structure of another display panel provided in an embodiment of this application;

[0047] Figure 10 is a schematic diagram of the structure of a partition layer provided in an embodiment of this application;

[0048] Figure 11 is a schematic diagram of another partition layer provided in an embodiment of this application;

[0049] Figure 12 is a schematic diagram of another partition layer provided in an embodiment of this application;

[0050] Figure 13 is a schematic diagram of another partition layer provided in an embodiment of this application;

[0051] Figure 14 is a schematic diagram of the film layer structure of another display panel provided in an embodiment of this application;

[0052] Figure 15 is a schematic diagram of the film layer structure of another display panel provided in an embodiment of this application;

[0053] Figure 16 is a top view of a display panel provided in an embodiment of this application;

[0054] Figure 17 is a schematic diagram of the film structure of another display panel provided in an embodiment of this application. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0056] In related technologies, silicon-based OLED display panels generally include a driving backplane and multiple light-emitting devices located on one side of the driving backplane. The light-emitting devices may include a first electrode layer, an organic light-emitting layer, and a second electrode layer stacked along a direction away from the driving backplane. The organic light-emitting layer may consist of multiple stacked sub-light-emitting layers, each of which 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. These sub-light-emitting layers can be connected in series via charge generation layers. Thus, the color of the light emitted by the organic light-emitting layer can be determined by the multiple sub-light-emitting layers. For example, sub-light-emitting layers capable of emitting yellow light and blue light can be stacked to make the organic light-emitting layer emit white light.

[0057] The first electrode layer may include multiple separately disposed first electrodes, all of which can be electrically connected to the driving backplane. When a corresponding voltage is applied to the first electrode layer and the second electrode layer, an electric field is formed between the first electrode layer and the second electrode layer. Thus, the hole injection layer can inject holes into the hole transport layer, and the holes are transported to the light-emitting material layer via the hole transport layer. The electron injection layer can inject electrons into the electron transport layer, and the electrons are transported to the light-emitting material layer via the electron transport layer. Holes and electrons combine within the light-emitting material layer to form high-energy excitons. These high-energy excitons are unstable and easily transition to low-energy excitons, releasing energy and generating photons to emit light within a certain wavelength range. When the organic light-emitting layer consists of multiple sub-light-emitting layers, the charge generation layer used to connect the various sub-light-emitting layers in series is usually made of a material with good conductivity to ensure that each sub-light-emitting layer can emit light, thereby improving the luminescence effect of the organic light-emitting layer.

[0058] In light-emitting devices, the organic light-emitting layers are uniformly deposited using a vapor deposition process. This means that the sub-light-emitting layers and charge-generating layers in each device are interconnected. Because the charge-generating layer has good conductivity, during the emission of light from a particular device, its charge-generating layer may generate lateral leakage current, causing adjacent devices to emit light. Therefore, a pixel definition layer with a partition structure is needed between adjacent devices to separate them. This partition structure can isolate at least a portion of the organic material layers in the organic light-emitting layer, such as the charge-generating layer, thus effectively preventing lateral leakage current. A filler layer can also be placed on the side of the pixel definition layer closest to the driving backplane to reduce the overall discontinuity of the pixel definition layer.

[0059] However, during the fabrication of display panels, etching time is typically increased to prevent two adjacent first electrodes from connecting. This, however, also introduces over-etching, resulting in grooves forming on the side of the driving backplane facing the first electrode layer. Because the concentration of the etching solution varies in different areas during over-etching, the depth of the grooves formed in different areas of the driving backplane varies. Consequently, the distance between the subsequent filling layer formed in different areas and the driving backplane also differs, meaning the flatness of the filling layer on the side facing away from the driving backplane is poor. Thus, the pixel definition layer with its isolation structure is formed on this poorly flat filling layer, leading to inconsistent isolation effects of the isolation structure on the organic light-emitting layer, ultimately resulting in poor display performance of the display panel.

[0060] In light-emitting devices, the second electrode layer is typically a single, continuous layer, meaning that the second electrode layers in each device are electrically connected to each other. The periphery of the second electrode layer can be electrically connected to an auxiliary electrode ring, which can then receive a cathode signal. Therefore, the second electrode layer can receive a cathode signal through the auxiliary electrode ring.

[0061] However, due to the high resistance of the second electrode layer, which is set up as a whole, and the long transmission path of the cathode signal, especially for larger display panels, the attenuation of the cathode signal is more obvious the farther away from the auxiliary electrode ring. This results in the cathode signal at a distance farther from the auxiliary electrode ring being different from the cathode signal at a distance closer to the auxiliary electrode ring, which can easily cause uneven light emission in silicon-based OLED display panels.

[0062] Additionally, referring to Figure 1, at the partition structure 03, the second electrode layer 023 will have uneven surfaces, resulting in an increased transmission path for the cathode signal. Furthermore, the second electrode layer 023 will form a puncture 04 at the partition structure 03. The minimum distance L1 between the puncture 04 and the first electrode layer 021 is less than the minimum distance L2 between the second electrode layer 023 and the first electrode layer 021 in the light-emitting device 02. The portion of the organic light-emitting layer 022 located between the puncture 04 and the first electrode layer 021 is distorted, especially the sub-light-emitting layer closer to the puncture 04, which has a greater degree of distortion, a thinner film, and lower internal resistance. Current will preferentially flow through the portion with lower internal resistance. Thus, some electrons in the second electrode layer 023 can enter the organic light-emitting layer 022 through the puncture 04 and recombine with holes to emit light, leading to leakage and a decrease in the luminous efficiency of the sub-light-emitting layer closer to the puncture 04.

[0063] Thus, the second electrode layer has unevenness at the partition structure, which increases the transmission path of the cathode signal. In addition, there is also puncture leakage in the second electrode layer. These factors will increase the transmission loss of the cathode signal in the second electrode layer, resulting in more significant attenuation of the cathode signal at positions farther away from the auxiliary electrode ring. Furthermore, the difference between the cathode signal at positions farther away from the auxiliary electrode ring and those closer to the auxiliary electrode ring will be greater, which in turn causes uneven light emission in the silicon-based OLED display panel, resulting in poor brightness uniformity of the silicon-based OLED display panel.

[0064] Meanwhile, the luminous efficiency of sub-emitting layers closer to the puncture point decreases, resulting in different luminous efficiencies between sub-emitting layers of different colors. Furthermore, due to leakage current during puncture, the emission of light from one light-emitting device may cause adjacent light-emitting devices to emit light, leading to color crosstalk. Ultimately, this results in a low gamma yield and poor display performance for silicon-based OLED display panels.

[0065] To address the aforementioned issues, this application provides a display panel, which can be a silicon-based OLED display panel. Referring to Figure 2, the display panel 000 may include: a driving backplate 100, a first electrode layer 200, a filling layer 300, a support pad layer 400, a partition layer 500, an organic light-emitting layer 600, and a second electrode layer 700.

[0066] The first electrode layer 200 may be located on one side of the drive backplate 100. The first electrode layer 200 may be an anode layer, and the first electrode layer 200 may have multiple separately arranged first electrodes, all of which may be electrically connected to the drive backplate 100.

[0067] The filling layer 300 can be located on one side of the drive backplate 100 having the first electrode layer 200. The filling layer 300 can be distributed between two adjacent first electrodes to fill the gap between the two adjacent first electrodes.

[0068] The support pad 400 can be located on the side of the filler layer 300 opposite to the driving backplate 100, and the orthographic projection of the filler layer 300 on the driving backplate 100 can be located within the orthographic projection of the support pad 400 on the driving backplate 100. The support pad 400 can be used to form a plurality of first pixel openings K1, and the plurality of first pixel openings K1 can correspond one-to-one with a plurality of first electrodes, and the orthographic projection of the first pixel opening K1 on the driving backplate 100 can be located within the orthographic projection of the corresponding first electrode on the driving backplate 100.

[0069] The partition layer 500 can be located on the side of the support pad 400 away from the drive back plate 100, and the side of the partition layer 500 away from the drive back plate 100 can have a partition groove U.

[0070] The organic light-emitting layer 600 can be located on the side of the partition layer 500 facing away from the driving backplate 100. A portion of the organic light-emitting layer 600 can be located within multiple first pixel openings K1, and the organic light-emitting layer 600 located within the first pixel openings K1 can be in contact with the first electrode. The organic light-emitting layer 600 can include multiple sub-light-emitting layers stacked together. Adjacent sub-light-emitting layers can be connected in series via a charge-generating layer. The organic light-emitting layer 600 can be fabricated using a full-layer vapor deposition process; that is, the sub-light-emitting layers and the charge-generating layer in the organic light-emitting layer 600 are all connected as a single layer. The partition groove U can isolate a portion of the organic material layers in the organic light-emitting layer 600, such as the charge-generating layer, thereby effectively blocking lateral leakage current.

[0071] The second electrode layer 700 can be a cathode layer. The second electrode layer 700 can be located on the side of the organic light-emitting layer 600 away from the driving backplate 100 and can be in contact with the organic light-emitting layer 600. Therefore, the organic light-emitting layer 600 located within the first pixel opening K1 can simultaneously contact the first electrode and the second electrode layer 700. When a corresponding voltage is applied to the first electrode and the second electrode layer 700, an electric field is formed between them. The organic light-emitting layer 600 located in the electric field can emit light, thereby allowing the display panel 000 to display the corresponding image.

[0072] It should be noted that the side of the filling layer 300 facing away from the driving backplate 100 may have a first height difference X1, and the side of the support pad layer 400 facing away from the driving backplate 100 may have a second height difference X2, which may be smaller than the first height difference X1. Thus, compared to the filling layer 300, the side of the support pad layer 400 facing away from the driving backplate 100 has better flatness. The partition layer 500 can be formed on the flatter support pad layer 400, thereby ensuring a more consistent partitioning effect of the partition groove U on the organic light-emitting layer 600, and thus improving the display effect.

[0073] Wherein, the first height difference X1 refers to the difference between the maximum distance between the side of the filling layer 300 away from the drive back plate 100 and the drive back plate 100 and the minimum distance between the side of the filling layer 300 away from the drive back plate 100 and the drive back plate 100; the second height difference X2 refers to the difference between the maximum distance between the side of the support pad 400 away from the drive back plate 100 and the drive back plate 100 and the minimum distance between the side of the support pad 400 away from the drive back plate 100 and the drive back plate 100.

[0074] It should also be noted that the filling layer 300 and the support pad layer 400 disposed between the partition layer 500 and the drive back plate 100 can lift the partition layer 500, increasing the distance between the partition layer 500 and the drive back plate 100. This can lift the portion of the second electrode layer 700 covering the partition groove U, thereby lifting the puncture formed in the second electrode layer 700, increasing the minimum distance between the puncture and the first electrode, and reducing the risk of puncture leakage. In this way, the transmission loss of the cathode signal in the second electrode layer 700 can be reduced, improving the uneven light emission phenomenon of the display panel 000. Simultaneously, due to the reduction in puncture leakage, the luminous efficiency of the sub-light-emitting layers of different colors is more balanced, thus improving the gamma yield of the display panel 000.

[0075] In summary, this application provides a display panel in which the side of the support pad layer facing away from the driving backplate has better flatness than the side of the fill layer facing away from the driving backplate. This allows the partition layer to be formed on a relatively flat film layer, ensuring a more consistent partitioning effect of the partition groove on the organic light-emitting layer. Simultaneously, the fill layer and support pad layer disposed between the partition layer and the driving backplate can lift the partition layer, increasing the distance between them. This lifts the portion of the second electrode layer covering the partition groove, thereby lifting the puncture formed in the second electrode layer, increasing the minimum distance between the puncture and the first electrode, and reducing the risk of puncture leakage. This reduces the transmission loss of the cathode signal in the second electrode layer, improves the uneven light emission of the display panel, enhances the brightness uniformity of the display panel, and, due to the reduced risk of puncture leakage, results in more balanced luminous efficiency of the sub-light-emitting layers of different colors, thereby improving the gamma yield of the display panel and achieving a good display effect.

[0076] Referring to Figure 2, the portion of the second electrode layer 700 covering the partition groove U on the side facing away from the driving backplate 100 can have a third height difference X3. This third height difference X3 can be greater than or equal to the second height difference X2, and less than or equal to 1.5 times the second height difference X2. This ensures that the film undulations on the side of the second electrode layer 700 covering the partition groove U facing away from the driving backplate 100 are smaller, thereby reducing the probability of puncture formation, decreasing the transmission loss of the cathode signal in the second electrode layer 700, and thus improving the phenomenon of uneven light emission.

[0077] The third height difference X3 refers to the difference between the maximum distance between the part of the second electrode layer 700 covering the partition groove U that is away from the drive back plate 100 and the drive back plate 100 and the minimum distance between the part of the second electrode layer 700 covering the partition groove U that is away from the drive back plate 100 and the drive back plate 100.

[0078] Optionally, as shown in Figure 2, the angle α between the inner wall of the first pixel opening K1 and the side of the support pad layer 400 facing the driving back plate 100 can be an acute angle. More preferably, the angle α can be less than or equal to 70 degrees. In this way, the organic light-emitting layer 600 and the second electrode layer 700 subsequently formed at the support pad layer 400 are both relatively smooth. This reduces the undulation of the film layer in the second electrode layer 700, lowers the probability of puncture formation, and further reduces the transmission loss of the cathode signal in the second electrode layer 700. This further improves the uneven light emission phenomenon of the display panel 000 and further improves the gamma yield of the display panel 000.

[0079] Referring to Figures 3 and 4, in the direction perpendicular to the drive backplate 100, the thickness of the support pad 400 can be greater than or equal to 0.3 times the thickness of the organic light-emitting layer 600, and less than or equal to the thickness of the organic light-emitting layer 600. This ensures that the support pad 400 lifts the partition layer 500, resulting in a larger distance between the partition layer 500 and the drive backplate 100. This allows for the lifting of the puncture formed in the second electrode layer 700, ensuring a larger minimum distance between the puncture and the first electrode, and reducing the risk of puncture leakage.

[0080] For example, the thickness of the organic light-emitting layer 600 can be in the range of 700 angstroms to 3500 angstroms. When the thickness of the organic light-emitting layer 600 is 2100 angstroms, the thickness of the support pad layer 400 can be between 630 angstroms and 2100 angstroms.

[0081] In one possible scenario, in the direction perpendicular to the driving backplate 100, the thickness of the support pad 400 can be greater than or equal to 0.3 times the thickness of the organic light-emitting layer 600, and less than or equal to 0.5 times the thickness of the organic light-emitting layer 600. As shown in Figure 3, when the thickness of the support pad 400 is relatively small, the lifting effect of the support pad 400 on the partition layer 500 is not significant, and the distance between the partition layer 500 and the driving backplate 100 is relatively small. Consequently, the lifting effect on the portion of the second electrode layer 700 covering the partition groove U is also not significant, resulting in a smaller discontinuity between the portion of the second electrode layer 700 covering the partition groove U and other portions of the second electrode layer 700. Thus, the second electrode layer 700 is generally flatter, resulting in a relatively short transmission path for the cathode signal in the second electrode layer 700, and a smaller puncture in the second electrode layer 700. This reduces the risk of puncture leakage and minimizes the transmission loss of the cathode signal in the second electrode layer 700, thereby improving the uneven light emission phenomenon of the display panel 000.

[0082] In another possible scenario, in the direction perpendicular to the drive backplate 100, the thickness of the support pad 400 can be greater than 0.5 times the thickness of the organic light-emitting layer 600, and less than or equal to the thickness of the organic light-emitting layer 600. As shown in Figure 4, when the thickness of the support pad 400 is relatively large, the support pad 400 significantly lifts the partition layer 500, and the distance between the partition layer 500 and the drive backplate 100 is relatively large. Consequently, the lifting of the portion of the second electrode layer 700 covering the partition groove U is also significant, resulting in a large discontinuity between the portion of the second electrode layer 700 covering the partition groove U and other portions of the second electrode layer 700. Thus, the film layer in the second electrode layer 700 exhibits large undulations, resulting in a longer transmission path for the cathode signal within the second electrode layer 700 and a higher risk of puncture leakage. However, due to the larger thickness of the support pad 400, its lifting effect on the film layer is significant, thereby increasing the minimum distance between the puncture in the second electrode layer 700 and the first electrode, reducing the risk of puncture leakage. This ensures that the transmission loss of the cathode signal in the second electrode layer 700 is small, thereby improving the uneven light emission phenomenon of the display panel 000 and enhancing brightness uniformity and gamma yield.

[0083] When the minimum distance between the puncture formed in the second electrode layer 700 and the first electrode is less than the minimum distance between the portion of the second electrode layer 700 covering the first pixel opening K1 and the first electrode, the organic light-emitting layer 600 located between the puncture and the first electrode will undergo a large degree of distortion, which can easily cause puncture leakage.

[0084] In this embodiment, referring to Figures 3 and 4, the distance H1 between the portion of the second electrode layer 700 covering the partition groove U and the driving back plate 100 (facing away from the driving back plate 100) can be greater than the distance H2 between the portion of the second electrode layer 700 covering the first pixel opening K1 and the driving back plate 100 (facing away from the driving back plate 100). This allows for a larger distance H1 between the portion of the second electrode layer 700 covering the partition groove U and the driving back plate 100, thereby increasing the minimum distance between the puncture and the first electrode and reducing the risk of puncture leakage. In one possible scenario, the minimum distance between the puncture and the first electrode can be greater than or equal to the minimum distance between the portion of the second electrode layer 700 covering the first pixel opening K1 and the first electrode, further reducing the risk of puncture leakage.

[0085] As shown in Figure 5, the partition layer 500 can be used to form multiple second pixel openings K2, which can be connected to multiple first pixel openings K1 to form multiple pixel openings K. A portion of the organic light-emitting layer 600 located within the multiple pixel openings K can simultaneously contact the first electrode and the second electrode layer 700. The organic light-emitting layer 600 located within a pixel opening K and the first electrode and the second electrode layer 700 in contact with it can function as a light-emitting device. When a corresponding voltage is applied to the first electrode and the second electrode layer 700, the corresponding light-emitting device can emit light, thereby enabling the display panel 000 to display an image.

[0086] Specifically, the angle β between the inner wall of the second pixel opening K2 and the side of the partition layer 500 facing the driving backplate 100 is an acute angle. Preferably, the angle β between the inner wall of the second pixel opening K2 and the side of the partition layer 500 facing the driving backplate 100 can be less than or equal to 70 degrees. This further ensures that the organic light-emitting layer 600 and the second electrode layer 700 subsequently formed on the inner wall of the second pixel opening K2 are relatively smooth, reducing the probability of puncture formation in the second electrode layer 700. Simultaneously, because the inner wall of the second pixel opening K2 is relatively smooth, punctures are more likely to form in the portion of the second electrode layer 700 covering the partition groove U, rather than in the portion covering the second pixel opening K2, thereby minimizing the impact on the luminous efficiency of the light-emitting device when puncture leakage occurs.

[0087] Please refer to Figures 2 to 5. The orthographic projection of the partition layer 500 on the drive back plate 100 can be located within the orthographic projection of the support pad layer 400 on the drive back plate 100. In this way, the lifting effect of the support pad layer 400 on the partition layer 500 can be better guaranteed, thereby ensuring the lifting effect on the portion of the second electrode layer 700 covering the partition groove U. This, in turn, ensures that the minimum distance between the puncture formed in the second electrode layer 700 and the first electrode is larger, reducing the risk of puncture leakage.

[0088] In one possible implementation, the angle α between the inner wall of the first pixel opening K1 and the side of the support pad 400 facing the driving back plate 100 can be an acute angle, and the angle β between the inner wall of the second pixel opening K2 and the side of the partition layer 500 facing the driving back plate 100 can also be an acute angle. Referring to Figures 5 to 8, in the direction parallel to the driving back plate 100, the maximum width W1 of the partition layer 500 between two adjacent second pixel openings K2 is the width of the partition layer 500 facing the driving back plate 100, and the minimum width W2 of the support pad 400 between two adjacent first pixel openings K1 is the width of the support pad 400 away from the driving back plate 100.

[0089] Referring to Figures 5 to 8, the maximum width W1 of the partition layer 500 between two adjacent second pixel openings K2 can be equal to the minimum width W2 of the support pad layer 400 between two adjacent first pixel openings K1; or, the maximum width W1 of the partition layer 500 between two adjacent second pixel openings K2 can be greater than the minimum width W2 of the support pad layer 400 between two adjacent first pixel openings K1; or, the maximum width W1 of the partition layer 500 between two adjacent second pixel openings K2 can also be less than the minimum width W2 of the support pad layer 400 between two adjacent first pixel openings K1. This application does not limit this aspect.

[0090] It should be noted that, in this embodiment, in the direction parallel to the driving backplate 100, the absolute value of the difference between the maximum width W1 of the partition layer 500 between two adjacent second pixel openings K2 and the minimum width W2 of the support pad layer 400 between two adjacent first pixel openings K1 can be less than or equal to 0.6 micrometers. Thus, even if there are precision errors during the film layer fabrication process, when manufacturing the display panel 000, it can be ensured that the orthographic projection of the partition layer 500 on the driving backplate 100 lies within the orthographic projection of the support pad layer 400 on the driving backplate 100, thereby better ensuring the lifting effect of the support pad layer 400 on the partition layer 500.

[0091] It should also be noted that, in the above possible implementations, in the direction parallel to the driving backplate 100, the maximum width of the support pad 400 between two adjacent first pixel openings K1 is the width of the support pad 400 on the side facing the driving backplate 100. For example, in a display panel 000, the maximum width of the support pad 400 can be between 0.5 micrometers and 3.0 micrometers, such that the support pad 400 can cover the edge portion of the adjacent first electrode.

[0092] Typically, during the formation of the first electrode on the drive backplate 100, defects such as burrs or dents may occur on the sidewall of the first electrode. Therefore, in this embodiment, the support pad 400 can cover the edge portion of the first electrode. This protects the edge portion of the first electrode and effectively prevents point discharge between the sidewall of the first electrode and the second electrode layer 700, which could lead to the breakdown of the light-emitting device. Simultaneously, it also prevents the distance between the sidewall of the first electrode and the punctures formed in the second electrode layer 700 from being too close, thus avoiding puncture leakage.

[0093] Referring to Figures 2 to 5, in the direction perpendicular to the drive backplate 100, the depth of the partition groove U can be less than or equal to the thickness of the partition layer 500. For example, when the thickness of the partition layer 500 is between 500 angstroms and 1500 angstroms, the depth of the partition groove U can be less than or equal to 500 angstroms. Since the partition groove U needs to be obtained by etching the partition layer 500 with an etching material, setting the depth of the partition groove U to be less than or equal to the thickness of the partition layer 500 ensures that when the etching material etches the partition layer 500, it will not etch the support pad layer 400, thus preventing the formation of grooves in the support pad layer 400 that communicate with the partition groove 500. This further ensures the lifting effect of the support pad layer 400 on the partition layer 500.

[0094] Referring to Figure 9, the display panel 000 may further include an auxiliary support pad 800. The auxiliary support pad 800 may be located on the side of the support pad 400 opposite to the drive back plate 100, and the orthographic projection of the auxiliary support pad 800 on the drive back plate 100 may be located within the orthographic projection of the support pad 400 on the drive back plate 100. This further increases the distance between the partition layer 500 and the drive back plate 100, thus making the lifting effect on the portion of the second electrode layer 700 covering the partition groove U more pronounced. This further increases the minimum distance between the puncture formed in the second electrode layer 700 and the first electrode, reducing the risk of puncture leakage.

[0095] The orthographic projection of the partition layer 500 on the drive back plate 100 can be located within the orthographic projection of the auxiliary support pad 800 on the drive back plate 100, which can further ensure the lifting effect of the auxiliary support pad 800 and the support pad 400 on the partition layer 500.

[0096] The orthographic projection of the partition groove U on the drive back plate 100 lies within the orthographic projection of the auxiliary support pad 800 on the drive back plate 100. Thus, when the etching material etches the partition groove U on the partition layer 500, the auxiliary support pad 800 can protect the support pad 400 from being etched, thereby better ensuring the lifting effect of the support pad 400 on the partition layer 500.

[0097] It should be noted that the auxiliary support pad 800 can be a single layer or multiple layers, and this embodiment does not limit this. For example, when the auxiliary support pad 800 has two layers, it can better lift the partition layer 500, further increasing the distance between the partition layer 500 and the drive backplate 100. Simultaneously, the auxiliary support pad 800 relatively close to the partition layer 500 can protect the auxiliary support pad 800 relatively far from the partition layer 500 and the support pad 400 from being etched by etching materials, thereby further ensuring a more significant lifting effect on the partition layer 500.

[0098] It should also be noted that the material of the auxiliary support layer 800 can be the same as that of the support layer 400, and can be inorganic materials such as silicon oxide and silicon nitride, organic materials, or oxide films, such as aluminum oxide. When the materials of the auxiliary support layer 800 and the support layer 400 are set as oxide films, such as aluminum oxide, aluminum oxide can effectively block the etching material, ensuring the depth and boundary of the etching material, thereby better protecting the auxiliary support layer 800 and the support layer 400 from being etched.

[0099] In the embodiments of this application, please refer to Figures 10 to 12. The partition groove U can have various structures, and the partition groove U with various structures can isolate part of the organic material layer in the organic light-emitting layer 600.

[0100] As shown in Figure 10, the angle between the inner wall of the partition groove U and the bottom surface of the partition groove U is an acute angle. This results in a wider width on one side of the bottom surface of the partition groove U and a narrower width on the side facing away from the drive backplate 100. This effectively separates the organic light-emitting layer 600 from the partition groove U, providing a better barrier against lateral leakage current. However, this also makes the portion of the second electrode layer 700 covering the partition groove U more susceptible to puncture. However, because the filling layer 300 and the support pad layer 400 lift the partition layer 500, the portion of the second electrode layer 700 covering the partition groove U is farther from the drive backplate 100, thus increasing the minimum distance between the puncture and the first electrode and reducing the risk of puncture leakage.

[0101] As shown in Figure 11, the angle between the inner wall of the partition groove U and the bottom surface of the partition groove U is an obtuse angle. This results in a larger width on the side of the partition groove U facing away from the driving backplate 100 and a smaller width on the bottom surface. This makes the subsequently formed organic light-emitting layer 600 and second electrode layer 700 relatively flat, leading to a poorer effect of the partition groove U in isolating the organic light-emitting layer 600 and a poorer effect in isolating lateral leakage current. However, the relatively flat second electrode layer 700 reduces film undulations and lowers the probability of puncture formation. Combined with the lifting effect of the filling layer 300 and the support pad layer 400 on the partition layer 500, the minimum distance between the puncture and the first electrode is larger, reducing the risk of puncture leakage. Thus, the transmission loss of the cathode signal in the second electrode layer 700 is reduced, thereby improving the uneven light emission phenomenon of the display panel 000 and enhancing the brightness uniformity of the display panel 000.

[0102] Figure 12 shows that the inner wall of the partition groove U can have a concave structure. This results in a wider width on one side of the bottom surface of the partition groove U, while the width on the side facing away from the driving backplate 100 is smaller. This allows for better disconnection of the organic light-emitting layer 600 by the partition groove U, effectively isolating lateral leakage current. However, it also makes the portion of the second electrode layer 700 covering the partition groove U more prone to puncture. Combined with the lifting effect of the filling layer 300 and the support pad layer 400 on the partition layer 500, the portion of the second electrode layer 700 covering the partition groove U is farther from the driving backplate 100. This results in a larger minimum distance between the puncture formed in the second electrode layer 700 and the first electrode, thus reducing the risk of puncture leakage and minimizing cathode signal transmission loss, thereby improving the uneven light emission of the display panel 000.

[0103] It should also be noted that the partition layer 500 can be a single layer or multiple layers, and this application embodiment does not limit this.

[0104] When the partition layer 500 is a single layer, the material of the partition layer 500 can be silicon oxide or silicon nitride. By controlling the etching rate and time, the etching of the partition grooves U of the above three structures can be achieved.

[0105] When the partition layer 500 is multi-layered, for example, referring to FIG13, the partition layer 500 can be three layers, including a first partition layer 501, a second partition layer 502, and a third partition layer 503. Since the inner wall of the partition groove U shown in FIG12 has a concave structure, to ensure the formation of the concave structure, the first partition layer 501 and the second partition layer 502 can be made of different materials, and the third partition layer 503 and the second partition layer 502 can also be made of different materials. For example, the first partition layer 501 and the third partition layer 503 can both be made of silicon oxide, and the second partition layer 502 can be made of silicon nitride. Thus, based on the different etching rates of the etching material on the different partition layers 500, the partition groove U with the concave structure shown in FIG12 can be obtained.

[0106] In this embodiment, due to over-etching during the etching of the first electrode layer 200, grooves of varying depths are formed on the side of the drive backplate 100 facing the first electrode layer 200. This results in poor flatness on the side of the subsequently formed filling layer 300 facing away from the drive backplate 100. Specifically, the side of the filling layer 300 facing away from the drive backplate 100 may protrude beyond the side of the first electrode layer 200 facing away from the drive backplate 100, or it may not protrude at all. This embodiment addresses this by forming a support pad layer 400 with higher flatness on the side of the filling layer 300 facing away from the drive backplate 100, ensuring that the partition layer 500 is formed on a relatively flat film layer, thereby guaranteeing a more consistent partitioning effect of the partition groove U.

[0107] When the side of the filling layer 300 facing away from the driving backplate 100 protrudes from the side of the first electrode layer 200 facing away from the driving backplate 100, various design methods can be used to make the side of the filling layer 300 facing away from the driving backplate 100 relatively flat. This application embodiment illustrates this with the following two design methods as examples:

[0108] The first design, as shown in Figure 14, involves grinding the side of the filler layer 300 away from the drive backplate 100. In a direction perpendicular to the drive backplate 100, the portion of the filler layer 300 protruding from the first electrode layer 200 is ground flat, thereby making the side of the filler layer 300 away from the drive backplate 100 flush with the side of the first electrode layer 200 away from the drive backplate 100.

[0109] The second design, as shown in Figure 15, improves the fabrication process of the first electrode layer 200 so that the side of the drive backplate 100 facing the first electrode layer 200 no longer forms a groove. Under this premise, the side of the filler layer 300 facing away from the drive backplate 100 is then ground flat. This also makes the side of the filler layer 300 facing away from the drive backplate 100 flush with the side of the first electrode layer 200 facing away from the drive backplate 100.

[0110] Both of the above design methods can form a relatively flat filling layer 300, and the side of the filling layer 300 facing away from the driving backplate 100 is flush with the side of the first electrode layer 200 facing away from the driving backplate 100. Thus, the partition layer 500 can be formed directly on the relatively flat filling layer 300, ensuring the partitioning effect of the partition groove U on the organic light-emitting layer 600; alternatively, a support pad layer 400 can be formed first on the filling layer 300, resulting in a relatively flat support pad layer 400, and then the partition layer 500 can be formed on the support pad layer 400, thus also ensuring the partitioning effect of the partition groove U. Simultaneously, the lifting effect of the filling layer 300 and the support pad layer 400 on the partition layer 500 is also better, thereby ensuring a larger minimum distance between the puncture formed in the second electrode layer 700 and the first electrode, reducing the risk of puncture leakage.

[0111] It should be noted that the filler layer 300 can be prepared from inorganic materials such as silicon oxide or silicon nitride. Both of these design methods allow the side of the filler layer 300 facing away from the drive backplate 100 to be flush with the side of the first electrode layer 200 facing away from the drive backplate 100. For example, when the thickness of the first electrode layer 200 is between 300 angstroms and 2000 angstroms, the thickness of the filler layer 300 can also be between 300 angstroms and 2000 angstroms.

[0112] Please refer to Figure 16. The display panel 000 may have a display area 10 and a non-display area 20, and the non-display area 20 may be located around the display area 10. The first electrode layer 200, the filling layer 300, the support pad layer 400, the partition layer 500, the organic light-emitting layer 600, and the second electrode layer 700 may all be located at least within the display area 10.

[0113] The driver backplane 100 may have multiple pads, which may be located in the non-display area 20. These pads may be electrically connected to the driver chip, thereby enabling the driver chip to drive the display panel 000 to display the corresponding image.

[0114] The drive backplane 100 may also have an auxiliary electrode ring 900, which is located within the non-display area 20 and may surround the display area 10. The auxiliary electrode ring 900 may have multiple adapter holes 901, which can be electrically connected to multiple auxiliary electrode lines, allowing the multiple auxiliary electrode lines to transmit cathode signals to the auxiliary electrode ring 900. A portion of the second electrode layer 700 is located within the non-display area 20, and this portion of the second electrode layer 700 within the non-display area 20 can be electrically connected to the auxiliary electrode ring 900, allowing the second electrode layer 700 to access cathode signals through the auxiliary electrode ring 900.

[0115] The second electrode layer 700 is a single-layer film structure, and the cathode signals required by each light-emitting device 300 are provided by the auxiliary electrode ring 900. Because the resistance of the single-layer second electrode layer 700 is high and the transmission path of the cathode signal is long, the attenuation of the cathode signal becomes more pronounced the farther away from the auxiliary electrode ring 900. This causes the brightness to decrease sequentially from the periphery of the display panel 000 to the center of the display panel 000, easily resulting in uneven light emission.

[0116] Furthermore, the portion of the second electrode layer 700 covering the partition groove U will become uneven and punctured, resulting in an increased transmission path for the cathode signal and leakage due to puncture. These factors will increase the transmission loss of the cathode signal in the second electrode layer 700, and the attenuation of the cathode signal will be more pronounced at locations farther from the auxiliary electrode ring 900, leading to poor brightness uniformity of the display panel 000.

[0117] However, in the above embodiment, a filling layer 300 and a support pad layer 400 are provided between the partition layer 500 and the drive back plate 100. This can lift the partition layer 500, thereby lifting the portion of the second electrode layer 700 covering the partition groove U. This, in turn, can lift the puncture formed in the second electrode layer 700, increasing the minimum distance between the puncture and the first electrode and reducing the risk of puncture leakage. In this way, the transmission loss of the cathode signal in the second electrode layer 700 can be reduced, improving the uneven light emission of the display panel 000 and enhancing brightness uniformity.

[0118] Please refer to Figure 17. The display panel 000 may also include an encapsulation layer 1000 and a filter layer 1100.

[0119] The encapsulation layer 1000 can be located on the side of the second electrode layer 700 facing away from the driving backplate 100, and is used to encapsulate and protect the organic light-emitting layer 600. The encapsulation layer 1000 may include: a first inorganic encapsulation layer 1001, an organic encapsulation layer 1002, and a second inorganic encapsulation layer 1003 stacked in a direction away from the driving backplate 100. The first inorganic encapsulation layer 1001 and the second inorganic encapsulation layer 1003 can prevent water and oxygen in the external environment from causing the organic light-emitting layer 600 to fail, while the organic encapsulation layer 1002 can flatten the film layer to a certain extent, and also has a certain buffering effect on the stress generated during the bending or folding of the display panel 000.

[0120] The filter layer 1100 can be located on the side of the encapsulation layer 1000 opposite to the driving backplate 100. The filter layer 1100 can include multiple color resist blocks, each of which corresponds to a different light-emitting device. The orthographic projection of the light-emitting device on the driving backplate 100 can lie within the orthographic projection of the corresponding color resist block on the driving backplate 100. In this way, the light emitted by the light-emitting device can selectively pass through the corresponding color resist block and then be emitted, thereby obtaining the desired color of light.

[0121] It should be noted that the display panel 000 may also include a protective layer 1200. The protective layer 1200 may be located between the encapsulation layer 1000 and the filter layer 1100. The first protective layer 1000 can encapsulate and protect the display panel 000, and can also provide a certain degree of planarization for the film layer.

[0122] For example, the organic light-emitting layer 600 may include a first sub-light-emitting layer, a second sub-light-emitting layer, and a charge-generating layer located between the two, wherein the second sub-light-emitting layer is closer to the driving backplane 100 than the first sub-light-emitting layer. The first sub-light-emitting layer may be configured to emit blue light, and the second sub-light-emitting layer may be configured to emit yellow light.

[0123] Because the first sub-emitting layer is close to the puncture site, it suffers from severe distortion and reduced internal resistance. Current preferentially flows through the portion with lower internal resistance, causing the distorted portion of the first sub-emitting layer to emit light even during puncture leakage. This reduces the blue light efficiency of the first sub-emitting layer, leading to an imbalance in luminous efficiency between different color sub-emitting layers, and consequently, a low gamma yield for the display panel. Furthermore, due to puncture leakage, when one light-emitting device emits light, adjacent devices may also emit light, causing color crosstalk and resulting in poor display quality.

[0124] However, in the above embodiment, a filling layer 300 and a support pad layer 400 are provided between the partition layer 500 and the drive back plate 100. This can lift the partition layer 500, thereby lifting the portion of the second electrode layer 700 covering the partition groove U. This, in turn, can lift the puncture formed in the second electrode layer 700, increasing the minimum distance between the puncture and the first electrode and reducing the risk of puncture leakage. In this way, the impact of puncture leakage on the luminous efficiency of the first sub-light-emitting layer can be reduced, resulting in a more balanced luminous efficiency among sub-light-emitting layers of different colors. This improves the gamma yield of the display panel 000 and enhances its display effect.

[0125] In summary, this application provides a display panel in which the side of the support pad layer facing away from the driving backplate has better flatness than the side of the fill layer facing away from the driving backplate. This allows the partition layer to be formed on a relatively flat film layer, ensuring a more consistent partitioning effect of the partition groove on the organic light-emitting layer. Simultaneously, the fill layer and support pad layer disposed between the partition layer and the driving backplate can lift the partition layer, increasing the distance between them. This lifts the portion of the second electrode layer covering the partition groove, thereby lifting the puncture formed in the second electrode layer, increasing the minimum distance between the puncture and the first electrode, and reducing the risk of puncture leakage. This reduces the transmission loss of the cathode signal in the second electrode layer, improves the uneven light emission of the display panel, enhances the brightness uniformity of the display panel, and, due to the reduced risk of puncture leakage, results in more balanced luminous efficiency of the sub-light-emitting layers of different colors, thereby improving the gamma yield of the display panel and achieving a good display effect.

[0126] This application also provides a display device, which can be any product or component with display function, such as augmented reality (AR) devices, virtual reality (VR) devices, mobile phones, tablets, televisions, monitors, laptops, digital photo frames, navigators, etc.

[0127] The display device may include a driver 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 described in the above embodiments, and the driver chip may be electrically connected to the display panel 000 to drive the display panel 000 to display an image.

[0128] It should be noted that the dimensions of layers and regions may be exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be intermediate layers. Additionally, it is understood that when an element or layer is referred to as being "below" another element or layer, it can be directly below the other element, or there may be more than one intermediate layer or element. Furthermore, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.

[0129] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0130] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display panel, characterized in that, include: The driving backplate, the first electrode layer, the filling layer, the support pad layer, the partition layer, the organic light-emitting layer, and the second electrode layer; The first electrode layer is located on one side of the drive back plate, and the first electrode layer has a plurality of separately disposed first electrodes, which are electrically connected to the drive back plate. The filling layer is located on the side of the drive backplate having the first electrode layer and is distributed between two adjacent first electrodes; The support pad layer is located on the side of the filling layer away from the driving back plate, and the support pad layer is used to form a plurality of first pixel openings. The orthographic projection of the filling layer on the driving back plate is located within the orthographic projection of the support pad layer on the driving back plate. The partition layer is located on the side of the support pad layer opposite to the drive back plate, and the side of the partition layer opposite to the drive back plate has a partition groove. The organic light-emitting layer is located on the side of the partition layer opposite to the drive backplate; The second electrode layer is located on the side of the organic light-emitting layer opposite to the driving backplate; The filling layer has a first height difference on the side opposite to the drive back plate, and the support pad layer has a second height difference on the side opposite to the drive back plate, wherein the second height difference is smaller than the first height difference.

2. The display panel according to claim 1, characterized in that, The portion of the second electrode layer covering the partition groove has a third height difference on the side opposite to the drive back plate. The third height difference is greater than or equal to the second height difference and less than or equal to 1.5 times the second height difference.

3. The display panel according to claim 1, characterized in that, The angle between the inner wall of the first pixel opening and the side of the support pad layer facing the drive back plate is an acute angle.

4. The display panel according to claim 1, characterized in that, In the direction perpendicular to the drive backplate, the thickness of the support pad layer is greater than or equal to 0.3 times the thickness of the organic light-emitting layer, and less than or equal to the thickness of the organic light-emitting layer.

5. The display panel according to claim 4, characterized in that, The distance between the portion of the second electrode layer covering the partition groove and the driving back plate on the side facing away from the driving back plate is greater than the distance between the portion of the second electrode layer covering the first pixel opening and the driving back plate on the side facing away from the driving back plate.

6. The display panel according to any one of claims 1 to 5, characterized in that, The partition layer is used to form a plurality of second pixel openings, which are connected to the plurality of first pixel openings. The angle between the inner wall of the second pixel opening and the side of the partition layer facing the drive back plate is an acute angle.

7. The display panel according to claim 6, characterized in that, The orthographic projection of the partition layer on the drive back plate lies within the orthographic projection of the support pad layer on the drive back plate.

8. The display panel according to claim 7, characterized in that, In a direction parallel to the drive backplate, the absolute value of the difference between the maximum width of the partition layer between two adjacent second pixel openings and the minimum width of the support pad layer between two adjacent first pixel openings is less than or equal to 0.6 micrometers.

9. The display panel according to any one of claims 1 to 5, 7 to 8, characterized in that, In a direction perpendicular to the drive back plate, the depth of the partition groove is less than or equal to the thickness of the partition layer.

10. The display panel according to claim 9, characterized in that, The display panel further includes: an auxiliary support pad layer, the auxiliary support pad layer being located on the side of the support pad layer opposite to the drive back plate; The orthographic projection of the partition groove on the drive back plate is located within the orthographic projection of the auxiliary support layer on the drive back plate.

11. The display panel according to any one of claims 1 to 5, 7 to 8, and 10, characterized in that, The angle between the inner wall of the partition groove and the bottom surface of the partition groove is an acute angle. Alternatively, the angle between the inner wall of the partition groove and the bottom surface of the partition groove is an obtuse angle; Alternatively, the inner wall of the partition groove has a concave structure.

12. The display panel according to any one of claims 1 to 5, 7 to 8, and 10, characterized in that, The support pad layer covers the edge portion of the first electrode.

13. The display panel according to any one of claims 1 to 5, 7 to 8, and 10, characterized in that, The display panel has: a display area and a non-display area located around the periphery of the display area; wherein the first electrode layer, the filling layer, the support pad layer, the partition layer, the organic light-emitting layer and the second electrode layer are all located at least within the display area; The drive backplate has an auxiliary electrode ring located in the non-display area, the auxiliary electrode ring being disposed around the display area, and the portion of the second electrode layer located in the non-display area being electrically connected to the auxiliary electrode ring.

14. The display panel according to claim 13, characterized in that, The display panel also includes an encapsulation layer and a filter layer; The encapsulation layer is located on the side of the second electrode layer opposite to the drive backplate; The filter layer is located on the side of the encapsulation layer opposite to the drive backplate.

15. A display device, characterized in that, It includes a driver chip and a display panel as described in any one of claims 1 to 14, wherein the driver chip is electrically connected to the display panel.

Images