Display panel and display device

Abstract

The utility model 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 filling layer, a supporting cushion layer, a separation layer, an organic light-emitting layer and a second electrode layer. The supporting cushion layer is located on the side, away from the driving backboard, of the filling layer, the side, away from the driving backboard, of the filling layer has a first height difference, the side, away from the driving backboard, of the supporting cushion layer has a second height difference, and the second height difference is smaller than the first height difference. The partition layer is located on the side, away from the driving backboard, of the supporting cushion layer, and a partition groove is formed in the side, away from the driving backboard, of the partition layer. In this way, the flatness of the side, away from the driving back plate, of the supporting cushion layer can be good, and it is guaranteed that the partition effect of the partition grooves on the organic light-emitting layer is consistent. Meanwhile, the filling layer and the supporting cushion layer can play a role in lifting the partition layer, the minimum distance between the puncture and the first electrode is increased, the risk of puncture electric leakage is reduced, and the phenomenon that the display panel emits light unevenly is improved.

Description

TECHNICAL FIELD

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

[0002] An organic light emitting diode (OLED) is a current type organic light emitting device, and an OLED display panel is widely used in the display field due to its thin thickness, self-luminous, high resolution, fast response speed and other advantages. In particular, a silicon-based OLED display panel with small pixel size and high pixel density can be widely used in display products with high resolution requirements and small size requirements such as augmented reality (AR) devices and virtual reality (VR) devices.

[0003] The silicon-based OLED display panel generally includes a driving backboard and a plurality of light emitting devices on the driving backboard, and the light emitting device includes a first electrode layer, an organic light emitting layer and a second electrode layer which are stacked in a direction away from the driving backboard. The second electrode layer is usually an integral layer, that is, the second electrode layers of the plurality of light emitting devices are connected together. The periphery of the second electrode layer can be electrically connected with an auxiliary electrode ring, and the auxiliary electrode ring can be connected to a cathode signal. Therefore, the second electrode layer can be connected to the cathode signal through the auxiliary electrode ring.

[0004] However, since the resistance value of the second electrode layer is high and the transmission path of the cathode signal is long, the attenuation of the cathode signal at a position far from the auxiliary electrode ring is more obvious, which causes the cathode signal at the position far from the auxiliary electrode ring to be different from the cathode signal at the position close to the auxiliary electrode ring, and thus easily causes the phenomenon of uneven light emission of the silicon-based OLED display panel. UTILITY MODEL CONTENT

[0005] The present application provides a display panel and a display device, which can solve the problem of uneven light emission of the silicon-based OLED display panel. The technical solution is as follows:

[0006] In one aspect, a display panel is provided, which includes a driving backboard, a first electrode layer, a filling layer, a support pad layer, a partition layer, an organic light emitting layer and a second electrode layer.

[0007] The first electrode layer is located on one side of the driving backboard, and the first electrode layer has a plurality of first electrodes which are separately arranged and electrically connected with the driving backboard.

[0008] The filling layer is located on the side of the driving backboard with the first electrode layer, and is distributed between adjacent two first electrodes.

[0009] The support pad layer is located on a side of the filling layer away from the driving backplate, and the support pad layer is used to enclose a plurality of first pixel openings, a projection of the filling layer on the driving backplate is located within a projection of the support pad layer on the driving backplate.

[0010] The partition layer is located on a side of the support pad layer away from the driving backplate, and a side of the partition layer away from the driving backplate has a partition groove.

[0011] The organic light-emitting layer is located on a side of the partition layer away from the driving backplate.

[0012] The second electrode layer is located on a side of the organic light-emitting layer away from the driving backplate.

[0013] The side of the filling layer away from the driving backplate has a first height difference, the side of the support pad layer away from the driving backplate has a second height difference, and the second height difference is less than the first height difference.

[0014] Optionally, a side of the part of the second electrode layer covering the partition groove away from the driving backplate has a third height difference, 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.

[0015] Optionally, an included angle between an inner wall of the first pixel opening and a side of the support pad layer toward the driving backplate is an acute angle.

[0016] Optionally, in a direction perpendicular to the driving backplate, a thickness of the support pad layer is greater than or equal to 0.3 times a thickness of the organic light-emitting layer, and less than or equal to the thickness of the organic light-emitting layer.

[0017] Optionally, a distance between a side of the part of the second electrode layer covering the partition groove away from the driving backplate and the driving backplate is greater than a distance between a side of the part of the second electrode layer covering the first pixel opening away from the driving backplate and the driving backplate.

[0018] Optionally, the partition layer is used to enclose a plurality of second pixel openings, the plurality of second pixel openings correspondingly communicate with the plurality of first pixel openings, and an included angle between an inner wall of the second pixel opening and a side of the partition layer toward the driving backplate is an acute angle.

[0019] Optionally, a projection of the partition layer on the driving backplate is located within a projection of the support pad layer on the driving backplate.

[0020] Optionally, in a direction parallel to the driving backplate, an absolute value of a difference between a maximum width of the partition layer between two adjacent second pixel openings and a minimum width of the support pad layer between two adjacent first pixel openings is less than or equal to 0.6 microns.

[0021] Optionally, in a direction perpendicular to the driving backplate, a depth of the partition groove is less than or equal to a thickness of the partition layer.

[0022] Optionally, the display panel further comprises an auxiliary support pad layer, the auxiliary support pad layer being located on a side of the support pad layer away from the driving backplate.

[0023] The auxiliary support pad layer is located on a side of the support pad layer away from the driving backplate.

[0024] Optionally, an included angle between an inner wall of the partition groove and a groove bottom surface of the partition groove is an acute angle.

[0025] Optionally, an included angle between an inner wall of the partition groove and a groove bottom surface of the partition groove is an obtuse angle.

[0026] Optionally, the inner wall of the partition groove has a concave structure.

[0027] Optionally, the support pad layer covers an edge portion of the first electrode.

[0028] Optionally, the display panel has a display area and a non-display area located at a 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 in the display area.

[0029] The driving backplate has an auxiliary electrode ring located in the non-display area, the auxiliary electrode ring being arranged around the display area, and a portion of the second electrode layer located in the non-display area being electrically connected to the auxiliary electrode ring.

[0030] Optionally, the display panel further comprises an encapsulation layer and a filter layer.

[0031] The encapsulation layer is located on a side of the second electrode layer away from the driving backplate.

[0032] The filter layer is located on a side of the encapsulation layer away from the driving backplate.

[0033] In another aspect, a display device is provided, comprising a driving chip and any of the above-mentioned display panels, the driving chip being electrically connected to the display panel.

[0034] The technical scheme provided by the application has at least the following beneficial effects:

[0035] The side of the support pad layer of the display panel away from the driving back plate is better in flatness than the side of the filling layer away from the driving back plate, so that the partition layer can be formed on a relatively flat film layer, ensuring that the partition grooves have a relatively consistent partition effect on the organic light-emitting layer. Meanwhile, the filling layer and the support pad layer are arranged between the partition layer and the driving back plate, which can lift the partition layer and increase the distance between the partition layer and the driving back plate, so as to lift the part of the second electrode layer covering the partition groove, and then lift the puncture formed in the second electrode layer and increase the minimum distance between the puncture and the first electrode, thereby reducing the risk of puncture leakage. In this way, the transmission loss of the cathode signal in the second electrode layer can be reduced, the phenomenon of uneven light emission of the display panel can be improved, and the brightness uniformity of the display panel can be improved. At the same time, since the risk of puncture leakage is reduced, the light-emitting efficiency of the sub-light-emitting layers of different colors is relatively balanced, so that the gamma rate of the display panel can be improved, and good display effect can be achieved. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0037] Figure 1 is a film layer structure schematic diagram of a display panel provided by the related art;

[0038] Figure 2 is a film layer structure schematic diagram of a display panel provided by the present application;

[0039] Figure 3 is a film layer structure schematic diagram of another display panel provided by the present application;

[0040] Figure 4 is a film layer structure schematic diagram of another display panel provided by the present application;

[0041] Figure 5 is a film layer structure schematic diagram of another display panel provided by the present application;

[0042] Figure 6 is a structure schematic diagram of a support pad layer and a partition layer provided by the present application;

[0043] Figure 7 is a structure schematic diagram of another support pad layer and partition layer provided by the present application;

[0044] Figure 8 FIG. 8 is another structural schematic diagram of a support layer and a partition layer provided by an embodiment of the present application;

[0045] Figure 9 FIG. 9 is another structural schematic diagram of a film layer of a display panel provided by an embodiment of the present application;

[0046] Figure 10 FIG. 10 is a structural schematic diagram of a partition layer provided by an embodiment of the present application;

[0047] Figure 11 FIG. 11 is another structural schematic diagram of a partition layer provided by an embodiment of the present application;

[0048] Figure 12 FIG. 12 is another structural schematic diagram of a partition layer provided by an embodiment of the present application;

[0049] Figure 13 FIG. 13 is another structural schematic diagram of a partition layer provided by an embodiment of the present application;

[0050] Figure 14 FIG. 14 is another structural schematic diagram of a film layer of a display panel provided by an embodiment of the present application;

[0051] Figure 15 FIG. 15 is another structural schematic diagram of a film layer of a display panel provided by an embodiment of the present application;

[0052] Figure 16 FIG. 16 is a top view of a display panel provided by an embodiment of the present application;

[0053] Figure 17 FIG. 17 is another structural schematic diagram of a film layer of a display panel provided by an embodiment of the present application. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in further detail below with reference to the drawings.

[0055] In the related art, a silicon-based OLED display panel can generally include a driving backplate and a plurality of light-emitting devices located on one side of the driving backplate. The light-emitting device can include a first electrode layer, an organic light-emitting layer and a second electrode layer which are stacked in a direction away from the driving backplate. The organic light-emitting layer can be composed of a plurality of stacked sub-light-emitting layers, each of which can include a hole injection layer, a hole transport layer, a light-emitting material layer, an electron transport layer and an electron injection layer which are stacked. The various sub-light-emitting layers can be connected in series through a charge generation layer. In this way, the color of the light emitted by the organic light-emitting layer can be determined by the 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 can be stacked to make the organic light-emitting layer emit white light.

[0056] The first electrode layer can include a plurality of first electrodes arranged separately, and each of the plurality of first electrodes can be electrically connected with the driving back plate. 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. In this way, the hole injection layer can inject holes into the hole transport layer, and the electrons injection layer can inject electrons into the electron transport layer, and the holes and the electrons are transported to the light emitting material layer through the hole transport layer and the electron transport layer, respectively, and the holes and the electrons combine into high-energy excitons in the light emitting material layer, and the high-energy excitons are unstable and easily transition to low-energy excitons and release energy, and when the energy is released, photons are generated to emit light with a wavelength in a certain range. In the case where the organic light emitting layer is composed of a plurality of sub light emitting layers, the charge generation layer used to connect the sub light emitting layers in series is usually made of a material with good conductivity, so that each sub light emitting layer can emit light, thereby improving the light emitting effect of the organic light emitting layer.

[0057] The organic light emitting layer in the light emitting device is formed by a uniform evaporation process, that is, the sub light emitting layers in each light emitting device are connected in an integral layer, and the charge generation layer is also connected in an integral layer. Due to the good conductivity of the charge generation layer, during the light emitting process of a certain light emitting device, the charge generation layer in this light emitting device can generate a horizontal leakage current, causing the adjacent light emitting device to emit light. Therefore, a pixel definition layer with a blocking structure is needed to be arranged between the adjacent light emitting devices to separate the light emitting devices, and the blocking structure can block at least part of the organic material layer in the organic light emitting layer, such as the charge generation layer, thereby achieving a good blocking effect on the horizontal leakage current. A filling layer can also be arranged on the side of the pixel definition layer close to the driving back plate to reduce the overall gap of the pixel definition layer.

[0058] However, during the preparation of the display panel, it is usually necessary to increase the etching time to ensure that the two adjacent first electrodes are not connected, but this also causes over-etching, resulting in the formation of grooves on the side of the driving back plate facing the first electrode layer. Due to the different concentrations of etching solution distributed in different regions during the over-etching process, the depths of the grooves formed in different regions of the driving back plate are different. In this way, the distance between the side of the filling layer facing away from the driving back plate and the driving back plate formed in different regions is also different, that is, the flatness of the side of the filling layer facing away from the driving back plate is poor. In this way, the pixel definition layer with a blocking structure is formed on the filling layer with poor flatness, which can cause the blocking effect of the blocking structure on the organic light emitting layer to be inconsistent, thereby causing the display effect of the display panel to be poor.

[0059] The second electrode layer in the light emitting device is usually provided as a whole, that is, the second electrode layers in each light emitting device are electrically connected with each other. The periphery of the second electrode layer can be electrically connected with the auxiliary electrode ring, and the auxiliary electrode ring can be connected to the cathode signal, so that the second electrode layer can be connected to the cathode signal through the auxiliary electrode ring.

[0060] However, due to the high resistance value of the second electrode layer provided as a whole and the long transmission path of the cathode signal, especially for a display panel with a large size, the transmission path of the cathode signal is longer, so the attenuation of the cathode signal at a position far away from the auxiliary electrode ring is more obvious, which leads to the difference between the cathode signal at a position far away from the auxiliary electrode ring and the cathode signal at a position close to the auxiliary electrode ring, and further causes the phenomenon of uneven light emission of the silicon-based OLED display panel.

[0061] In addition, please refer to Figure 1 At the partition structure 03, the second electrode layer 023 will be concave and convex, which will cause the transmission path of the cathode signal to increase. In addition, the second electrode layer 023 will form a puncture 04 at the partition structure 03, and the minimum distance L1 between the puncture 04 and the first electrode layer 021 is smaller than the minimum distance L2 between the second electrode layer 023 and the first electrode layer 021 in the light emitting device 02. The part of the organic light emitting layer 022 between the puncture 04 and the first electrode layer 021 is distorted, especially the part of the sub-light emitting layer close to the puncture 04, which has a smaller film thickness and a smaller internal resistance, and the current will preferentially pass through the part with a smaller internal resistance. In this way, part of the electrons in the second electrode layer 023 can enter the organic light emitting layer 022 and recombine with holes to emit light through the puncture 04, which causes the leakage phenomenon to occur, and also causes the light emitting efficiency of the sub-light emitting layer close to the puncture 04 to decrease.

[0062] In this way, the second electrode layer is concave and convex at the partition structure, which causes the transmission path of the cathode signal to increase, and the puncture leakage phenomenon also exists in the second electrode layer, which will cause the transmission loss of the cathode signal in the second electrode layer to increase, the attenuation of the cathode signal at a position far away from the auxiliary electrode ring is more obvious, and the difference between the cathode signal at a position far away from the auxiliary electrode ring and the cathode signal at a position close to the auxiliary electrode ring is larger, which further causes the phenomenon of uneven light emission of the silicon-based OLED display panel, and leads to the poor brightness uniformity of the silicon-based OLED display panel.

[0063] In addition, the light emitting efficiency of the sub-light emitting layer close to the puncture decreases, so the light emitting efficiencies of the sub-light emitting layers of different colors are different; and due to the puncture leakage, the light emission of the adjacent light emitting device is likely to occur when a certain light emitting device emits light, which causes color mixing. In this way, the final result is that the silicon-based OLED display panel has a low gamma rate and a poor display effect.

[0064] To solve the above problems, the display panel provided by the embodiments of the present application can be a silicon-based OLED display panel. Please refer to Figure 2 The display panel 000 can 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.

[0065] The first electrode layer 200 can be located on one side of the driving backplate 100. The first electrode layer 200 can be an anode layer, and the first electrode layer 200 can have a plurality of first electrodes arranged separately. Each of the plurality of first electrodes can be electrically connected to the driving backplate 100.

[0066] The filling layer 300 can be located on the side of the driving backplate 100 having the first electrode layer 200. The filling layer 300 can be distributed between adjacent two first electrodes, and used to fill the gap between the adjacent two first electrodes.

[0067] The support pad layer 400 can be located on the side of the filling layer 300 away from the driving backplate 100. The orthographic projection of the filling layer 300 on the driving backplate 100 can be located within the orthographic projection of the support pad layer 400 on the driving backplate 100. The support pad layer 400 can be used to enclose a plurality of first pixel openings K1. The plurality of first pixel openings K1 can correspond to the plurality of first electrodes one by one. 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.

[0068] The partition layer 500 can be located on the side of the support pad layer 400 away from the driving backplate 100, and the side of the partition layer 500 away from the driving backplate 100 can have a partition groove U.

[0069] The organic light-emitting layer 600 can be located on the side of the partition layer 500 away from the driving backplate 100. Part of the organic light-emitting layer 600 can be located within the plurality of first pixel openings K1. The organic light-emitting layer 600 located within the first pixel opening K1 can be in contact with the first electrode. The organic light-emitting layer 600 can include a plurality of sub-light-emitting layers arranged in layers. Adjacent sub-light-emitting layers can be connected in series through a charge generation layer. The organic light-emitting layer 600 can be made by using an integral layer evaporation process, that is, the sub-light-emitting layers and the charge generation layer in the organic light-emitting layer 600 are connected in an integral layer. The partition groove U can partition part of the organic material layer in the organic light-emitting layer 600, such as the charge generation layer, thereby playing a partitioning effect on the lateral leakage current.

[0070] The second electrode layer 700 can be a cathode layer, and the second electrode layer 700 can be located on the side of the organic light-emitting layer 600 away from the driving back plate 100 and can be in contact with the organic light-emitting layer 600. The organic light-emitting layer 600 located in the first pixel opening K1 can be in contact with the first electrode and the second electrode layer 700 at the same time. When the first electrode and the second electrode layer 700 are loaded with corresponding voltages, an electric field can be formed between the first electrode and the second electrode layer 700. The organic light-emitting layer 600 located in the electric field can emit light, so that the display panel 000 displays a corresponding picture.

[0071] It should be noted that the side of the filling layer 300 away from the driving back plate 100 can have a first height difference X1, and the side of the support pad layer 400 away from the driving back plate 100 has a second height difference X2, which can be less than the first height difference X1. In this way, compared with the filling layer 300, the side of the support pad layer 400 away from the driving back plate 100 has better flatness, and the isolation layer 500 can be formed on the support pad layer 400 with better flatness, so as to ensure that the isolation effect of the isolation groove U on the organic light-emitting layer 600 is more uniform, thereby improving the display effect.

[0072] The first height difference X1 refers to the difference between the maximum distance between the side of the filling layer 300 away from the driving back plate 100 and the driving back plate 100 and the minimum distance between the side of the filling layer 300 away from the driving back plate 100 and the driving back plate 100. The second height difference X2 refers to the difference between the maximum distance between the side of the support pad layer 400 away from the driving back plate 100 and the driving back plate 100 and the minimum distance between the side of the support pad layer 400 away from the driving back plate 100 and the driving back plate 100.

[0073] It should also be noted that the filling layer 300 and the support pad layer 400 arranged between the isolation layer 500 and the driving back plate 100 can play a role in lifting the isolation layer 500, increasing the distance between the isolation layer 500 and the driving back plate 100, thereby lifting the part of the second electrode layer 700 covering the isolation groove U, and further 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, and the phenomenon of uneven light emission of the display panel 000 can be improved. At the same time, due to the reduction of puncture leakage, the light-emitting efficiency of the sub-light-emitting layer of different colors is more balanced, and the gamma rate of the display panel 000 can also be improved.

[0074] In summary, the display panel provided by the embodiments of the present application has better flatness on the side of the support pad layer away from the driving backplate than on the side of the filling layer away from the driving backplate, so that the partition layer can be formed on a relatively flat film layer, and the partitioning effect of the partition groove on the organic light-emitting layer is ensured to be relatively uniform. Meanwhile, the filling layer and the support pad layer are arranged between the partition layer and the driving backplate, which can lift the partition layer and increase the distance between the partition layer and the driving backplate, so that the part of the second electrode layer covering the partition groove can be lifted, and the puncture formed in the second electrode layer can be lifted, the minimum distance between the puncture and the first electrode is increased, and the risk of puncture leakage is reduced. In this way, the transmission loss of the cathode signal in the second electrode layer can be reduced, the phenomenon of uneven light emission of the display panel can be improved, the brightness uniformity of the display panel can be improved, and the gamma rate of the display panel can be improved, so that a good display effect can be achieved.

[0075] Please refer to Figure 2 The part of the second electrode layer 700 covering the partition groove U can have a third height difference X3 on the side away from the driving backplate 100, the 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. In this way, the film layer on the side of the part of the second electrode layer 700 covering the partition groove U away from the driving backplate 100 can have a small fluctuation, so that the formation probability of the puncture can be reduced, the transmission loss of the cathode signal in the second electrode layer 700 can be reduced, and the phenomenon of uneven light emission can be improved.

[0076] The third height difference X3 refers to the difference between the maximum distance between the side of the part of the second electrode layer 700 covering the partition groove U away from the driving backplate 100 and the driving backplate 100 and the minimum distance between the side of the part of the second electrode layer 700 covering the partition groove U away from the driving backplate 100 and the driving backplate 100.

[0077] Optionally, as shown in Figure 2 The included angle α between the inner wall of the first pixel opening K1 and the side of the support pad layer 400 facing the driving backplate 100 can be an acute angle, and more preferably, the included 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 formed at the support pad layer 400 subsequently are relatively flat, the fluctuation of the film layer in the second electrode layer 700 is reduced, the formation probability of the puncture is reduced, and the transmission loss of the cathode signal in the second electrode layer 700 can be further reduced, the phenomenon of uneven light emission of the display panel 000 can be further improved, and the gamma rate of the display panel 000 can be further improved.

[0078] Please refer to Figure 3 and Figure 4In the direction perpendicular to the driving back plate 100, the thickness of the support cushion layer 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. In this way, the support cushion layer 400 can ensure the lifting effect on the partition layer 500, so that the distance between the partition layer 500 and the driving back plate 100 is large, thereby lifting the puncture formed in the second electrode layer 700, ensuring that the minimum distance between the puncture and the first electrode is large, and reducing the risk of puncture leakage.

[0079] For example, the thickness of the organic light-emitting layer 600 can range from 700 angstroms to 3500 angstroms. When the thickness of the organic light-emitting layer 600 is 2100 angstroms, the thickness of the support cushion layer 400 can be between 630 angstroms and 2100 angstroms.

[0080] In one possible case, in the direction perpendicular to the driving back plate 100, the thickness of the support cushion layer 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 Figure 3 shown, when the thickness of the support cushion layer 400 is relatively small, the support cushion layer 400 does not significantly lift the partition layer 500, and the distance between the partition layer 500 and the driving back plate 100 is relatively small. Therefore, the part of the second electrode layer 700 covering the partition groove U is not significantly lifted, so that the difference between the part of the second electrode layer 700 covering the partition groove U and other parts of the second electrode layer 700 is small. In this way, the second electrode layer 700 is relatively flat as a whole, the transmission path of the cathode signal in the second electrode layer 700 is relatively short, the puncture formed in the second electrode layer 700 is small, the risk of puncture leakage is reduced, and the transmission loss of the cathode signal in the second electrode layer 700 is small. Therefore, the phenomenon of uneven light emission of the display panel 000 can be improved.

[0081] In another possible case, in the direction perpendicular to the driving back plate 100, the thickness of the support cushion layer 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 Figure 4As shown, when the thickness of the support pad layer 400 is relatively large, the support pad layer 400 significantly lifts the partition layer 500, and the distance between the partition layer 500 and the driving back plate 100 is relatively large, and the part of the second electrode layer 700 covering the partition groove U is also significantly lifted, and the difference in height between the part of the second electrode layer 700 covering the partition groove U and other parts of the second electrode layer 700 is relatively large. In this way, the film layer in the second electrode layer 700 has a large fluctuation, the transmission path of the cathode signal in the second electrode layer 700 is long, and the risk of puncture leakage is large. However, since the thickness of the support pad layer 400 is large, the lifting effect on the film layer is obvious, so that the minimum distance between the puncture formed in the second electrode layer 700 and the first electrode is large, and the risk of puncture leakage can be reduced. In this way, the transmission loss of the cathode signal in the second electrode layer 700 can be small, thereby improving the phenomenon of uneven light emission of the display panel 000, and improving the brightness uniformity and gamma rate.

[0082] 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 part of the second electrode layer 700 covering the first pixel opening K1 and the first electrode, the part of the organic light-emitting layer 600 between the puncture and the first electrode will be distorted to a large extent, and the puncture leakage phenomenon is likely to occur.

[0083] In the embodiments of the present application, please refer to Figure 3 and Figure 4 The distance H1 between the side of the part of the second electrode layer 700 covering the partition groove U away from the driving back plate 100 and the driving back plate 100 can be greater than the distance H2 between the side of the part of the second electrode layer 700 covering the first pixel opening K1 away from the driving back plate 100 and the driving back plate 100. In this way, the distance H1 between the side of the part of the second electrode layer 700 covering the partition groove U away from the driving back plate 100 and the driving back plate 100 can be large, so that the minimum distance between the puncture and the first electrode can be increased, thereby reducing the risk of puncture leakage. In one possible case, the minimum distance between the puncture and the first electrode can be greater than or equal to the minimum distance between the part of the second electrode layer 700 covering the first pixel opening K1 and the first electrode, so that the risk of puncture leakage can be further reduced.

[0084] As Figure 5As shown, the partition layer 500 can be used to enclose a plurality of second pixel openings K2, which can be in communication with the plurality of first pixel openings K1, forming a plurality of pixel openings K. The portion of the organic light-emitting layer 600 located in the plurality of pixel openings K can be in contact with the first electrode and the second electrode layer 700 at the same time, and the organic light-emitting layer 600 located in one pixel opening K and the first electrode and the second electrode layer 700 in contact therewith can serve as one light-emitting device. When the first electrode and the second electrode layer 700 are loaded with corresponding voltages, the corresponding light-emitting device can emit light, so that the display panel 000 can perform picture display.

[0085] In the present embodiment, the included angle β between the inner wall of the second pixel opening K2 and the side of the partition layer 500 facing the driving backboard 100 is an acute angle, and preferably, the included angle β between the inner wall of the second pixel opening K2 and the side of the partition layer 500 facing the driving backboard 100 can be less than or equal to 70 degrees. In this way, the organic light-emitting layer 600 and the second electrode layer 700 formed on the inner wall of the second pixel opening K2 in the subsequent process can be further ensured to be relatively flat, and the probability of puncture in the second electrode layer 700 can be reduced. At the same time, since the inner wall of the second pixel opening K2 is relatively flat, puncture is relatively easy to form in the portion of the second electrode layer 700 covering the partition groove U, rather than in the portion of the second electrode layer 700 covering the second pixel opening K2, so that the influence of the puncture leakage phenomenon on the light-emitting efficiency of the light-emitting device can be avoided as much as possible.

[0086] Please refer to Figures 2 to 5 The orthographic projection of the partition layer 500 on the driving backboard 100 can be located within the orthographic projection of the support pad layer 400 on the driving backboard 100. In this way, the lifting effect of the support pad layer 400 on the partition layer 500 can be better ensured, so that the lifting effect on the portion of the second electrode layer 700 covering the partition groove U can be ensured, and the minimum distance between the puncture formed in the second electrode layer 700 and the first electrode can be ensured to be relatively large, thereby reducing the risk of puncture leakage.

[0087] In one possible implementation, the included angle α between the inner wall of the first pixel opening K1 and the side of the support pad layer 400 facing the driving backboard 100 can be an acute angle, and the included angle β between the inner wall of the second pixel opening K2 and the side of the partition layer 500 facing the driving backboard 100 can also be an acute angle. Please refer to Figures 5 to 8 In the direction parallel to the driving backboard 100, the maximum width W1 of the partition layer 500 between two adjacent second pixel openings K2 is the width of the side of the partition layer 500 facing the driving backboard 100, and the minimum width W2 of the support pad layer 400 between two adjacent first pixel openings K1 is the width of the side of the support pad layer 400 away from the driving backboard 100.

[0088] Please refer toFigures 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 be less than the minimum width W2 of the support pad layer 400 between two adjacent first pixel openings K1. The embodiments of the present application do not limit this.

[0089] It should be noted that in the embodiments of the present application, in the direction parallel to the driving back plate 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 microns. In this way, when manufacturing the display panel 000, even if there is a precision error in the film layer manufacturing, the orthographic projection of the partition layer 500 on the driving back plate 100 can be ensured to be located within the orthographic projection of the support pad layer 400 on the driving back plate 100, thereby better ensuring the lifting effect of the support pad layer 400 on the partition layer 500.

[0090] It should also be noted that in the above possible implementation manners, in the direction parallel to the driving back plate 100, the maximum width of the support pad layer 400 between two adjacent first pixel openings K1 is the width of the side of the support pad layer 400 facing the driving back plate 100. For example, in a display panel 000, the maximum width of the support pad layer 400 can be between 0.5 microns and 3.0 microns, so that the support pad layer 400 can cover the edge portion of the adjacent first electrode.

[0091] Generally, in the process of forming the first electrode on the driving back plate 100, the side wall of the first electrode may have burrs or recesses and other undesirable conditions. Therefore, in the embodiments of the present application, the support pad layer 400 can cover the edge portion of the first electrode, so that the support pad layer 400 can protect the edge portion of the first electrode, effectively avoiding the occurrence of sharp point discharge between the side wall of the first electrode and the second electrode layer 700, thereby avoiding the breakdown of the light emitting device. At the same time, it can also avoid the distance between the side wall of the first electrode and the puncture formed in the second electrode layer 700 being too close, and the occurrence of puncture leakage.

[0092] Please refer to Figures 2 to 5In the direction perpendicular to the driving back plate 100, the depth of the partition groove U can be less than or equal to the thickness of the partition layer 500. Exemplarily, 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 is obtained by etching the partition layer 500 by an etching substance, the depth of the partition groove U is set to be less than or equal to the thickness of the partition layer 500, so that when the etching substance etches the partition layer 500, the etching substance will not etch the support pad layer 400, so as to ensure that no groove in the support pad layer 400 is in communication with the partition groove 500, thereby further ensuring the lifting effect of the support pad layer 400 on the partition layer 500.

[0093] Please refer to Figure 9 The display panel 000 can further include an auxiliary support pad layer 800, which can be located on the side of the support pad layer 400 away from the driving back plate 100, and the orthographic projection of the auxiliary support pad layer 800 on the driving back plate 100 can be located within the orthographic projection of the support pad layer 400 on the driving back plate 100. In this way, the distance between the partition layer 500 and the driving back plate 100 can be further increased, and the lifting effect of the support pad layer 400 on the part of the second electrode layer 700 covering the partition groove U is more obvious, so that the minimum distance between the puncture formed in the second electrode layer 700 and the first electrode can be further increased, and the risk of puncture leakage can be reduced.

[0094] The orthographic projection of the partition layer 500 on the driving back plate 100 can be located within the orthographic projection of the auxiliary support pad layer 800 on the driving back plate 100, so as to further ensure the lifting effect of the auxiliary support pad layer 800 and the support pad layer 400 on the partition layer 500.

[0095] The orthographic projection of the partition groove U on the driving back plate 100 is located within the orthographic projection of the auxiliary support pad layer 800 on the driving back plate 100. In this way, when the etching substance etches the partition groove U of the partition layer 500, the auxiliary support pad layer 800 can protect the support pad layer 400 from being etched, thereby better ensuring the lifting effect of the support pad layer 400 on the partition layer 500.

[0096] It should be noted that the auxiliary support pad layer 800 can be one layer or multiple layers, and the embodiments of the present application do not limit this. Exemplarily, when the auxiliary support pad layer 800 is two layers, the partition layer 500 can be better lifted, and the distance between the partition layer 500 and the driving back plate 100 can be further increased. Meanwhile, the layer of the auxiliary support pad layer 800 relatively close to the partition layer 500 can protect the layer of the auxiliary support pad layer 800 relatively far from the partition layer 500 and the support pad layer 400 from being etched by the etching substance, thereby further ensuring that the lifting effect on the partition layer 500 is more obvious.

[0097] It should be further noted that the material of the auxiliary support pad layer 800 can be the same as that of the support pad layer 400, which can be an inorganic material such as silicon oxide or silicon nitride, or an organic material, or an oxide film such as aluminum oxide. When the materials of the auxiliary support pad layer 800 and the support pad layer 400 are set as an oxide film such as aluminum oxide, the aluminum oxide can better block the etching material, ensure the etching depth and boundary of the etching material, and thus better protect the auxiliary support pad layer 800 and the support pad layer 400 from being etched.

[0098] In the embodiments of the present 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 partition part of the organic material layer in the organic light-emitting layer 600.

[0099] Figure 10 The angle between the inner wall of the partition groove U and the groove bottom surface of the partition groove U is an acute angle, so that the width of one side of the groove bottom surface in the partition groove U is larger, and the width of the side away from the driving back plate 100 in the partition groove U is smaller, so that the effect of the organic light-emitting layer 600 being disconnected by the partition groove U is better, and the transverse leakage current can be better disconnected, but at the same time, the part of the second electrode layer 700 covering the partition groove U is easy to form a puncture. However, due to the lifting of the filling layer 300 and the support pad layer 400 to the partition layer 500, the part of the second electrode layer 700 covering the partition groove U is far away from the driving back plate 100, so that the minimum distance between the puncture and the first electrode is also larger, thereby reducing the risk of puncture leakage.

[0100] Figure 11 The angle between the inner wall of the partition groove U and the groove bottom surface of the partition groove U is an obtuse angle, so that the width of the side away from the driving back plate 100 in the partition groove U is larger, and the width of the groove bottom surface side is smaller, so that the subsequently formed organic light-emitting layer 600 and second electrode layer 700 are also relatively flat, and the effect of the partition groove U disconnecting the organic light-emitting layer 600 is poor, and the effect of disconnecting the transverse leakage current is also poor. However, the second electrode layer 700 is relatively flat, the film layer fluctuation is reduced, and the probability of puncture formation is also reduced. In combination with the lifting effect of the filling layer 300 and the support pad layer 400 to the partition layer 500, the minimum distance between the puncture and the first electrode is larger, thereby reducing the risk of puncture leakage. In this way, the transmission loss of the cathode signal in the second electrode layer 700 is reduced, thereby improving the phenomenon of uneven light emission of the display panel 000 and improving the brightness uniformity of the display panel 000.

[0101] Figure 12The inner wall of the partition groove U shown can have a concave structure, so that the width of one side of the groove bottom surface in the partition groove U is larger, and the width of the side away from the driving back plate 100 in the partition groove U is smaller, so that the organic light-emitting layer 600 is better disconnected by the partition groove U, and a better partition effect can be achieved for the transverse leakage current, but at the same time, the part of the second electrode layer 700 covering the partition groove U is prone to form a puncture. In combination with the lifting effect of the filling layer 300 and the support pad layer 400 on the partition layer 500, the part of the second electrode layer 700 covering the partition groove U is far away from the driving back plate 100, so that the minimum distance between the puncture formed in the second electrode layer 700 and the first electrode is also larger, and thus the risk of puncture leakage can be reduced, thereby reducing the transmission loss of the cathode signal and improving the phenomenon of uneven light emission of the display panel 000.

[0102] It should also be noted that the partition layer 500 can be one layer or multiple layers, and the embodiments of the present application do not limit this.

[0103] In the case of one layer of the partition layer 500, the material of the partition layer 500 can be silicon oxide or silicon nitride, and by controlling the etching rate and time, the etching of the partition groove U with the above three structures can be realized.

[0104] In the case of multiple layers of the partition layer 500, for example, referring to Figure 13 , 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. For Figure 12 the inner wall of the partition groove U shown has a concave structure, so that in order to ensure the formation of the concave structure, the first partition layer 501 and the second partition layer 502 can be prepared by selecting different materials, and the third partition layer 503 and the second partition layer 502 can also be prepared by selecting different materials. For example, the first partition layer 501 and the third partition layer 503 can be made of silicon oxide material, and the second partition layer 502 can be made of silicon nitride material. In this way, according to the different etching rates of the etching material on different partition layers 500, the Figure 12 partition groove U with a concave structure shown can be obtained.

[0105] In the embodiment of the present application, due to the over-etching problem caused when etching the first electrode layer 200, the driving back plate 100 forms grooves with different depths towards the side of the first electrode layer 200, thereby causing the subsequent filling layer 300 to have poor flatness towards the side of the driving back plate 100. The side of the filling layer 300 away from the driving back plate 100 can be protruded from the side of the first electrode layer 200 away from the driving back plate 100, or the side of the filling layer 300 away from the driving back plate 100 can not be protruded from the side of the first electrode layer 200 away from the driving back plate 100. The embodiment of the present application forms the support pad layer 400 with high flatness towards the side of the filling layer 300 away from the driving back plate 100, so that the partition layer 500 is formed on a relatively flat film layer, thereby ensuring that the partition effect of the partition groove U is relatively uniform.

[0106] In the case that the side of the filling layer 300 away from the driving back plate 100 is protruded from the side of the first electrode layer 200 away from the driving back plate 100, a plurality of design methods can be used to make the side of the filling layer 300 away from the driving back plate 100 relatively flat. The embodiment of the present application is illustratively described by taking the following two design methods as examples:

[0107] The first design method, as shown in Figure 14 , the side of the filling layer 300 away from the driving back plate 100 is ground flat. In the direction perpendicular to the driving back plate 100, the part of the filling layer 300 protruded from the first electrode layer 200 is ground flat, so that the side of the filling layer 300 away from the driving back plate 100 is flush with the side of the first electrode layer 200 away from the driving back plate 100.

[0108] The second design method, as shown in Figure 15 , the preparation process of the first electrode layer 200 is improved, so that the driving back plate 100 no longer forms grooves towards the side of the first electrode layer 200. On this premise, the side of the filling layer 300 away from the driving back plate 100 is ground flat. In this way, the side of the filling layer 300 away from the driving back plate 100 can also be flush with the side of the first electrode layer 200 away from the driving back plate 100.

[0109] The two design manners can form a relatively flat filling layer 300, and the side of the filling layer 300 away from the driving back plate 100 is flush with the side of the first electrode layer 200 away from the driving back plate 100. In this way, a subsequent partition layer 500 can be directly formed on the filling layer 300 with good flatness, which can ensure the partitioning effect of the partition groove U on the organic light-emitting layer 600; or a support pad layer 400 can be formed on the filling layer 300 first, the support pad layer 400 formed has high flatness, and then the partition layer 500 is formed on the support pad layer 400, so as to also ensure the partitioning effect of the partition groove U, and at the same time, the filling layer 300 and the support pad layer 400 can better lift the partition layer 500, thereby ensuring that the minimum distance between the puncture in the second electrode layer 700 and the first electrode is large, and reducing the risk of puncture leakage.

[0110] It should be noted that the filling layer 300 can be prepared from inorganic materials such as silicon oxide or silicon nitride, and the two design manners can make the side of the filling layer 300 away from the driving back plate 100 flush with the side of the first electrode layer 200 away from the driving back plate 100. Exemplarily, when the thickness of the first electrode layer 200 is between 300 angstroms and 2000 angstroms, the thickness of the filling layer 300 can also be between 300 angstroms and 2000 angstroms.

[0111] For reference Figure 16 The display panel 000 can have a display area 10 and a non-display area 20, and the non-display area 20 can be located at the periphery of 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 can be located at least in the display area 10.

[0112] The driving back plate 100 can have a plurality of pads, the plurality of pads can be located in the non-display area 20, and the plurality of pads can be electrically connected with the driving chip, so that the driving chip can drive the display panel 000 to display a corresponding picture.

[0113] The driving back plate 100 can also have an auxiliary electrode ring 900, the auxiliary electrode ring 900 is located in the non-display area 20, and the auxiliary electrode ring 900 can be arranged around the display area 10. The auxiliary electrode ring 900 can have a plurality of transfer holes 901, and the plurality of transfer holes 901 can be electrically connected with a plurality of auxiliary electrode lines, so that the plurality of auxiliary electrode lines can transmit a cathode signal to the auxiliary electrode ring 900. A part of the second electrode layer 700 is located in the non-display area 20, and the part of the second electrode layer 700 located in the non-display area 20 can be electrically connected with the auxiliary electrode ring 900, so that the second electrode layer 700 can access the cathode signal through the auxiliary electrode ring 900.

[0114] The second electrode layer 700 is a film layer structure arranged as a whole layer, and the cathode signal required by each light emitting device 300 is provided by the auxiliary electrode ring 900. Since the resistance value of the second electrode layer 700 arranged as a whole layer is high, and the transmission path of the cathode signal is long, the attenuation of the cathode signal at a position farther away from the auxiliary electrode ring 900 is more obvious, which can cause the brightness to attenuate in turn from the center of the display panel 000 to the periphery of the display panel 000, and can easily cause the phenomenon of uneven light emission.

[0115] In addition, the part of the second electrode layer 700 covering the partition groove U can have concave and convex fluctuations, and can also form a puncture, which can cause the transmission path of the cathode signal to increase, and there can be a puncture leakage phenomenon. These can cause the transmission loss of the cathode signal in the second electrode layer 700 to increase, and the attenuation of the cathode signal at a position farther away from the auxiliary electrode ring 900 is more obvious, thereby causing the display panel 000 to have poor brightness uniformity.

[0116] However, in the above embodiment, the filling layer 300 and the support pad layer 400 are arranged between the partition layer 500 and the driving backboard 100, which can lift the partition layer 500, thereby lifting the part of the second electrode layer 700 covering the partition groove U, and further 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, the phenomenon of uneven light emission of the display panel 000 can be improved, and the brightness uniformity can be improved.

[0117] Please refer to Figure 17 The display panel 000 can further include an encapsulation layer 1000 and a filter layer 1100.

[0118] The encapsulation layer 1000 can be located on the side of the second electrode layer 700 away from the driving backboard 100, and is used for encapsulating and protecting the organic light emitting layer 600. The encapsulation layer 1000 can include a first inorganic encapsulation layer 1001, an organic encapsulation layer 1002, and a second inorganic encapsulation layer 1003 arranged in a stacked manner away from the driving backboard 100. The first inorganic encapsulation layer 1001 and the second inorganic encapsulation layer 1003 can avoid water and oxygen in the external environment from causing the organic light emitting layer 600 to fail, and 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.

[0119] The light filtering layer 1100 can be located on the side of the encapsulation layer 1000 away from the driving backboard 100, the light filtering layer 1100 can include a plurality of color resistance blocks, the plurality of color resistance blocks can correspond to the plurality of light emitting devices one by one, the orthographic projection of the light emitting device on the driving backboard 100 can be located in the orthographic projection of the corresponding color resistance block on the driving backboard 100. In this way, the light emitted by the light emitting device can selectively pass through the corresponding color resistance block and then be emitted, so that the light of the required color can be obtained.

[0120] It should be noted that the display panel 000 can further include a protective layer 1200. The protective layer 1200 can be located between the encapsulation layer 1000 and the light filtering layer 1100, the first protective layer 1000 can play a role of encapsulation and protection for the display panel 000, and can also play a certain flattening effect on the film layer.

[0121] Exemplarily, the organic light emitting layer 600 can include a first sub-light emitting layer, a second sub-light emitting layer, and a charge generation layer located between the two, and the second sub-light emitting layer is closer to the driving backboard 100 than the first sub-light emitting layer. The first sub-light emitting layer can be configured to emit blue light, and the second sub-light emitting layer can be configured to emit yellow light.

[0122] Because the first sub-light emitting layer is closer to the piercing, the first sub-light emitting layer is severely distorted, the internal resistance is reduced, and the current will preferentially pass through the part with smaller internal resistance, so the first sub-light emitting layer in the distorted part will emit light in the case of piercing leakage, thereby reducing the blue light efficiency of the first sub-light emitting layer, causing the light emitting efficiency imbalance between the sub-light emitting layers of different colors, and further causing the display panel 000 to have a low gamma rate. At the same time, due to the piercing leakage, when a certain light emitting device emits light, it can cause the adjacent light emitting device to emit light, thereby causing color mixing and poor display effect.

[0123] However, in the above embodiment, the filling layer 300 and the support pad layer 400 are arranged between the partition layer 500 and the driving backboard 100, which can play a role of lifting the partition layer 500, thereby lifting the part of the second electrode layer 700 covering the partition groove U, and further lifting the piercing formed in the second electrode layer 700, increasing the minimum distance between the piercing and the first electrode, and reducing the risk of piercing leakage. In this way, the influence of piercing leakage on the light emitting efficiency of the first sub-light emitting layer can be reduced, so that the light emitting efficiency of the sub-light emitting layers of different colors is more balanced, thereby improving the gamma rate of the display panel 000 and improving the display effect of the display panel 000.

[0124] In summary, the display panel provided by the embodiments of the present application has better flatness on the side of the support pad layer away from the driving backplate than on the side of the filling layer away from the driving backplate, so that the partition layer can be formed on a relatively flat film layer, and the partition effect of the partition groove on the organic light-emitting layer is ensured to be relatively uniform. Meanwhile, the filling layer and the support pad layer are arranged between the partition layer and the driving backplate, which can lift the partition layer and increase the distance between the partition layer and the driving backplate, so that the part of the second electrode layer covering the partition groove can be lifted, and the puncture formed in the second electrode layer can be lifted, the minimum distance between the puncture and the first electrode is increased, and the risk of puncture leakage is reduced. In this way, the transmission loss of the cathode signal in the second electrode layer can be reduced, the phenomenon of uneven light emission of the display panel can be improved, the brightness uniformity of the display panel can be improved, and the gamma rate of the display panel can be improved, so that a good display effect can be achieved.

[0125] The display device provided by the embodiments of the present application can be an Augmented Reality (AR) device, a Virtual Reality (VR) device, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, or any product or component having a display function.

[0126] The display device can include a driving chip and a display panel. The display panel can be a silicon-based OLED display panel. The display panel can be the display panel 000 in the above embodiments, and the driving chip can be electrically connected to the display panel 000, so as to drive the display panel 000 to display a picture.

[0127] It should be noted that in the drawings, the sizes of the layers and regions can be exaggerated for clarity. It should also be 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 layer, or intervening layers can also be present. In addition, it should be understood that when an element or layer is referred to as being “under” another element or layer, it can be directly under the other element or layer, or one or more intervening layers or elements can also be present. In addition, it should also be understood that when a layer or element is referred to as being “between” two layers or elements, it can be the only layer or element between the two layers or elements, or one or more intervening layers or elements can also be present. Similar reference numerals indicate similar elements throughout the specification.

[0128] In the present application, the terms “first” and “second” are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. The term “a plurality of” refers to two or more, unless otherwise explicitly limited.

[0129] The above merely provides the optional embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present 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 pad 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