Display panel and display device

Abstract

Provided in the present application are a display panel and a display device. The display panel comprises a substrate, a first electrode layer, a pixel definition layer, an isolation structure, a light-emitting layer and a second electrode layer, wherein the second electrode layer is continuously arranged at the isolation structure; the isolation structure comprises a first isolation portion and a second isolation portion that are separately arranged; the light-emitting layer is continuously arranged at the position where the first isolation portion is located, and the light-emitting layer is discontinuously arranged at the position where the second isolation portion is located.

Description

Display panel and display device

[0001] This application claims priority to Chinese patent application No. 202411217761.2, filed on August 30, 2024, the entire contents of which are incorporated herein by reference. Technical Field

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

[0003] Organic light-emitting diode (OLED) devices are characterized by low power consumption, fast response speed, and wide viewing angle, and have been widely used in people's lives. In order to further improve the efficiency and lifespan of OLED devices, tandem light-emitting technology has emerged. In tandem OLED, different light-emitting materials and structures are usually used to build a multi-layer structure. Each layer can emit light of a specific wavelength. These lights can be combined together through proper design and control to form a brighter and richer color performance.

[0004] Currently, a charge generation layer (CGL) is often added to multilayer organic light-emitting diode (OLED) devices to improve device performance. However, the charge generation layer has strong charge generation and separation capabilities and strong conductivity. It is easy for other colors to be accidentally excited by pixels that should not be lit when only one color is lit, which affects the display effect. Generally, the phenomenon of light stealing between adjacent pixels is avoided by isolating the entire light-emitting layer. However, when the light-emitting layer is isolated, the electrical contact between the cathode and the light-emitting layer is interrupted, the cathode signal cannot be transmitted normally, and thus the cathode impedance increases, which increases the power consumption of the device. Invention Overview

[0005] This application provides a display panel and display device to alleviate the shortcomings of related technologies.

[0006] In a first aspect, embodiments of this application provide a display panel, including:

[0007] substrate;

[0008] A first electrode layer is disposed on one side of the substrate;

[0009] A pixel definition layer is disposed on one side of the substrate. The pixel definition layer includes a pixel opening area and a non-opening area disposed between two adjacent pixel opening areas.

[0010] An isolation structure is disposed on the side of the pixel definition layer away from the substrate, and the isolation structure is located within the non-opening area;

[0011] A light-emitting layer is disposed on the pixel definition layer and covers the isolation structure;

[0012] The second electrode layer is disposed on the side of the light-emitting layer away from the pixel definition layer, and the second electrode layer is continuously disposed at the isolation structure;

[0013] The isolation structure includes a first isolation part and a second isolation part that are separately disposed. The light-emitting layer is continuously disposed at the location of the first isolation part, and the light-emitting layer is disposed separately at the location of the second isolation part.

[0014] Secondly, embodiments of this application provide a display device, including a display panel, the display panel comprising:

[0015] substrate;

[0016] A first electrode layer is disposed on one side of the substrate;

[0017] A pixel definition layer is disposed on one side of the substrate. The pixel definition layer includes a pixel opening area and a non-opening area disposed between two adjacent pixel opening areas.

[0018] An isolation structure is disposed on the side of the pixel definition layer away from the substrate, and the isolation structure is located within the non-opening area;

[0019] A light-emitting layer is disposed on the pixel definition layer and covers the isolation structure;

[0020] The second electrode layer is disposed on the side of the light-emitting layer away from the pixel definition layer, and the second electrode layer is continuously disposed at the isolation structure;

[0021] The isolation structure includes a first isolation part and a second isolation part that are separately disposed. The light-emitting layer is continuously disposed at the location of the first isolation part, and the light-emitting layer is disposed separately at the location of the second isolation part. Attached Figure Description

[0022] Figure 1 is a schematic diagram of the structure of the display panel provided in an embodiment of this application;

[0023] Figure 2 is a schematic diagram of the first enlarged structure at point A in Figure 1 provided in an embodiment of this application;

[0024] Figure 3 is a schematic diagram of a display panel structure in related technologies;

[0025] Figure 4 is a schematic diagram of the second enlarged structure at point A in Figure 1 provided in an embodiment of this application;

[0026] Figure 5 is a schematic diagram of another structure of the display panel in the related technology;

[0027] Figure 6 is an equivalent circuit diagram of a light-emitting device in related technologies;

[0028] Figure 7 shows another equivalent circuit diagram of a light-emitting device in the related technology;

[0029] Figure 8 is a schematic diagram of the isolation structure provided in an embodiment of this application;

[0030] Figure 9 is a top view of the display panel provided in an embodiment of this application;

[0031] Figure 10 is a schematic diagram of the structure of the display device provided in the embodiment of this application. Embodiments of the present invention

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application.

[0033] In the description of this application, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, and "at least one" can mean one, two, or more, unless otherwise explicitly specified.

[0035] This application provides a display panel and a display device. These will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments.

[0036] Please refer to Figures 1 and 2; wherein, Figure 1 is a schematic diagram of the structure of the display panel provided in the embodiment of this application; and Figure 2 is a schematic diagram of the first enlarged structure at point A in Figure 1 provided in the embodiment of this application.

[0037] In one embodiment, the display panel 1 may be an organic light-emitting diode (OLED) display panel, and the display panel 1 includes a substrate 11, a pixel definition layer 12, an isolation structure 13, and a light-emitting device layer 14.

[0038] The substrate 11 can be an array substrate, and the substrate 11 includes a first substrate 111, a first shielding layer 112, a second substrate 113, a second shielding layer 114, and a driving circuit layer 115 stacked together; wherein, the first substrate 111 and the second substrate 113 can each include a rigid substrate or a flexible substrate. When the first substrate 111 and the second substrate 113 are both rigid substrates, the material can be metal or glass. When the first substrate 111 and the second substrate 113 are both flexible substrates, the material can include at least one of acrylic resin, methacrylic resin, polyisoprene, vinyl resin, epoxy resin, polyurethane-based resin, cellulose resin, siloxane resin, polyimide-based resin, and polyamide-based resin. This embodiment does not impose specific limitations on this.

[0039] The driving circuit layer 115 includes a buffer layer 1151 disposed on the second shielding layer 114, a first gate insulating layer 1152 disposed on the buffer layer 1151, a second gate insulating layer 1153 disposed on the first gate insulating layer 1152, an interlayer insulating layer 1154 disposed on the second gate insulating layer 1153, a first planarization layer 1155 disposed on the interlayer insulating layer 1154, and a second planarization layer 1156 disposed on the first planarization layer 1155; wherein, the pixel definition layer 12 is disposed on the side of the second planarization layer 1156 away from the first planarization layer 1155.

[0040] The driving circuit layer 115 further includes a thin-film transistor 1157, which includes an active layer, a first gate, a second gate, a source, and a drain. The active layer is disposed between the buffer layer 1151 and the first gate insulating layer 1152. The first gate is disposed between the first gate insulating layer 1152 and the second gate insulating layer 1153. The second gate is disposed between the second gate insulating layer 1153 and the first planarization layer 1155. The source and the drain are disposed between the interlayer insulating layer 1154 and the first planarization layer 1155. The driving circuit layer 115 also includes a connecting wire disposed on the first organic planarization layer away from the interlayer insulating layer 1154 and connected to the drain. The connecting wire is used to connect the drain to the light-emitting device layer 14 to realize signal transmission.

[0041] The pixel definition layer 12 is disposed on the side of the second flattening layer 1156 away from the first flattening layer 1155. The pixel definition layer 12 includes a pixel opening 121 area 1201 and a non-opening area 1202 disposed between two adjacent pixel openings 121 areas 1201. The non-opening area 1202 is located on at least one side of the pixel opening 121 area 1201. For example, if the non-opening area 1202 is located between two adjacent pixel openings 121 areas 1201, the non-opening area 1202 can be disposed around the pixel opening 121 area 1201. Specifically, the pixel definition layer 12 includes a plurality of pixel openings 121, and the pixel openings 121 are correspondingly disposed within the pixel opening 121 area 1201 of the pixel definition layer 12. The pixel opening 121 area 1201 corresponding to the pixel opening 121 can be the light-emitting pixel area of ​​the display panel 1. By setting pixels of different colors in different pixel openings 121, the display of the panel can be realized.

[0042] The isolation structure 13 is disposed on the side of the pixel definition layer 12 away from the substrate 11, and the isolation structure 13 is located within the non-opening area 1202.

[0043] The light-emitting device layer 14 includes a first electrode layer 141, a light-emitting layer 142, and a second electrode layer 143 stacked together. The first electrode layer 141 is disposed between the second planarization layer 1156 and the pixel definition layer 12. The first electrode layer 141 includes a plurality of first electrodes 1411, with one first electrode 1411 corresponding to one pixel opening 121, and at least a portion of the first electrodes 1411 are exposed in the pixel opening 121. The first electrode layer 141 can be an anode layer, and the first electrodes 1411 can be anodes. The first electrode 1411 can be connected to the drain electrode; the light-emitting layer 142 is disposed on the pixel definition layer 12 and covers the isolation structure 13, the light-emitting layer 142 is disposed on the first electrode 1411 and at least part of the light-emitting layer 142 is located within the pixel opening 121; the second electrode layer 143 can be a cathode layer, the second electrode layer 143 is disposed on the side of the light-emitting layer 142 away from the first electrode layer 141, the second electrode layer 143 is a whole layer, and the second electrode layer 143 is continuously disposed at the isolation structure 13.

[0044] The isolation structure 13 includes a first isolation part 131 and a second isolation part 132 that are separately disposed. The light-emitting layer 142 is continuously disposed at the location of the first isolation part 131 and is disposed separately at the location of the second isolation part 132.

[0045] Please refer to Figures 2 and 3; Figure 3 is a schematic diagram of a display panel structure in the related art; in the related design, the display panel 2 includes a substrate 21, and a pixel definition layer 22 and a light-emitting device layer 23 stacked on the substrate 21. The light-emitting device layer 23 includes an anode 231, a light-emitting layer 232, and a cathode 233 stacked on the substrate 21; in order to avoid the phenomenon of light leakage between adjacent pixels, in the related design, a barrier layer 24 is provided in the non-opening portion of the pixel definition layer 22. The barrier layer 24 may include a first barrier portion 241 and a second barrier portion 242. The light-emitting layer 232 is disconnected in both the first barrier portion 241 and the second barrier portion 242, thereby preventing the charge in adjacent pixels from flowing laterally into another pixel.

[0046] As can be seen from Figures 2 and 3, in the display panel 2, since the light-emitting layer 232 is disconnected in both the first blocking part 241 and the second blocking part 242, the cathode signal is blocked in both the first blocking part 241 and the second blocking part 242. As a result, the charge needs to pass through a larger resistance path when it is transmitted laterally, which increases the impedance of the cathode 233. The higher cathode impedance means that a larger driving voltage is required to achieve the required brightness, which in turn increases the power consumption of the entire screen.

[0047] It is understood that in this embodiment, by setting the second electrode layer 143 continuously at the isolation structure 13, the isolation structure 13 includes a first isolation part 131 and a second isolation part 132 that are separately set, and the light-emitting layer 142 is continuously set at the location of the first isolation part 131, the electrical signal can be transmitted laterally at the first isolation part 131, maintaining a low impedance path, reducing the voltage when the driving current passes through the second electrode layer 143, and thus reducing the overall power consumption of the display panel 1; and by setting the light-emitting layer 142 to be disconnected at the location of the second isolation part 132, the charge transmission path between adjacent pixels can be isolated, thereby avoiding the phenomenon of cross-pixel stealing.

[0048] Please refer to Figures 1 and 4; wherein, Figure 4 is a schematic diagram of the second enlarged structure at point A in Figure 1 provided in the embodiment of this application.

[0049] In one embodiment, the light-emitting layer 142 includes a first light-emitting part 1421, a charge-generating layer 1422, and a second light-emitting part 1423 stacked together; wherein the first light-emitting part 1421, the charge-generating layer 1422, and the second light-emitting part 1423 are all continuously disposed at the location of the first isolation part 131, and the first light-emitting part 1421, the charge-generating layer 1422, and the second light-emitting part 1423 are all disconnected at the location of the second isolation part 132.

[0050] It should be noted that, in order to further improve the efficiency and lifespan of OLED devices, tandem light-emitting technology has emerged. Please refer to Figures 5, 6 and 7. Figure 5 is a schematic diagram of another structure of the display panel in the related technology; Figure 6 is an equivalent circuit diagram of the light-emitting device in the related technology; and Figure 7 is another equivalent circuit diagram of the light-emitting device in the related technology.

[0051] In related technologies, the display panel 3 can be an OLED light-emitting device. The display panel 3 includes an anode 31, a hole transport layer 32, a first light-emitting layer 33, an n-type charge generation layer 34, a p-type charge generation layer 35, a second light-emitting layer 36, and a cathode 37 stacked together. Since the n-type charge generation layer 34 has a strong ability to generate and separate electrons, it is easy to cause the phenomenon of "sneaking" between adjacent pixels. Therefore, in related technologies, an undercut structure is often used to isolate the n-type charge generation layer 34 between adjacent pixels to reduce the probability of "sneaking". However, this isolation process can also easily cause a short circuit between the n-type charge generation layer 34 and the cathode 37, affecting the display effect of the display panel 1.

[0052] It is understood that, in this embodiment, by setting the first light-emitting part 1421, the charge-generating layer 1422, and the second light-emitting part 1423 to be continuously disposed at the location of the first isolation part 131, and the second electrode layer 143 to be continuously disposed at the isolation structure 13, it helps to ensure the continuity of the light-emitting layer 142 at the location of the first isolation part 131, the good electrical contact between the second electrode layer 143 and the light-emitting layer 142 at the location of the first isolation part 131, and the non-contact between the second electrode layer 143 and the charge-generating layer 1422 at the location of the first isolation part 131, thereby avoiding short circuits between the charge-generating layer 1422 and the second electrode layer 143 and improving the display effect of the display panel 1.

[0053] Please refer to Figures 1, 2, and 8; wherein, Figure 8 is a schematic diagram of the isolation structure provided in the embodiment of this application;

[0054] In one embodiment, the width of the first isolation portion 131 on the side away from the substrate 11 is greater than the width of the first isolation portion 131 on the side close to the substrate 11; the width of the second isolation portion 132 on the side away from the substrate 11 is less than the width of the second isolation portion 132 on the side close to the substrate 11.

[0055] Specifically, in the direction from the substrate 11 to the isolation structure 13, the width of the first isolation portion 131 gradually decreases, and the cross-sectional shape of the first isolation portion 131 is narrower at the top and wider at the bottom. The narrower top design can reduce the risk of breakage of the light-emitting layer 142, and the light-emitting layer 142 can more easily cross the narrower part without easily breaking, which helps to ensure the continuity of the light-emitting layer 142 at the location of the first isolation portion 131. This, in turn, helps to ensure good electrical contact between the second electrode layer 143 and the light-emitting layer 142 at the location of the first isolation portion 131, reduces the impedance of the second electrode layer 143, and optimizes the power consumption of the display panel 1. At the same time, the wider bottom design gives the first isolation portion 131 better structural support on the pixel definition layer 12, which helps to improve the stability of the structure.

[0056] In the direction from the substrate 11 to the isolation structure 13, the width of the second isolation portion 132 gradually increases, and the cross-sectional shape of the second isolation portion 132 is a structure that is wider at the top and narrower at the bottom, so that the second isolation portion 132 has a wider surface area at its top, thereby more effectively blocking the continuity of the light-emitting layer 142 at the location of the second isolation portion 132, which helps to ensure that the light-emitting layer 142 is disconnected at the location of the second isolation portion 132, thereby effectively enhancing the isolation effect of lateral charge and further reducing the phenomenon of cross-pixel stealing.

[0057] Please refer to Figures 1, 2 and 8; in one embodiment, in the direction perpendicular to the substrate 11, the shape of the cross-section of the first isolation portion 131 includes, but is not limited to, a regular trapezoid, and the shape of the cross-section of the second isolation portion 132 includes, but is not limited to, an inverted trapezoid.

[0058] Specifically, the light-emitting layer 142 is disposed on the pixel definition layer 12 and covers the isolation structure 13. That is, in the process of manufacturing the display panel 1, the isolation structure 13 is manufactured first, and then the light-emitting layer 142 is manufactured. The first isolation portion 131 includes a first side surface 1311, a first bottom surface 1312 and a first top surface 1313. The first bottom surface 1312 is located on the side of the first isolation portion 131 close to the substrate 11, and the first top surface 1313 is located on the side of the first isolation portion 131 away from the substrate 11.

[0059] It is understood that, in this embodiment, by setting the first isolation portion 131 in a direction perpendicular to the substrate 11, and the shape of the cross section of the first isolation portion 131 including but not limited to a regular trapezoid, the light-emitting layer 142 can be well deposited at the corresponding positions of the first side surface 1311 and the first top surface 1313 of the first isolation portion 131, without the phenomenon of local thinning or breakage, thereby ensuring the reliability of the continuous setting of the light-emitting layer 142 at the position of the first isolation portion 131.

[0060] The second isolation portion 132 includes a second side surface 1321, a second bottom surface 1322, and a second top surface 1323. The second bottom surface 1322 is located on the side of the second isolation portion 132 closer to the substrate 11, and the second top surface 1323 is located on the side of the first isolation portion 131 away from the substrate 11.

[0061] It is understood that, in this embodiment, by setting the shape of the cross-section of the second isolation portion 132 in a direction perpendicular to the substrate 11, including but not limited to an inverted trapezoid, the light-emitting layer 142 can only be deposited at the corresponding position of the second top surface 1323 of the second isolation portion 132. That is, the light-emitting layer 142 is disconnected at the connection between the second side surface 1321 and the first top surface 1313, thereby ensuring that the light-emitting layer 142 is disconnected at the second isolation portion 132, and effectively preventing the charge transfer path between adjacent pixels through physical isolation.

[0062] Please refer to Figures 1, 2, and 8; in one embodiment; there is a first included angle α between the first side surface 1311 and the first bottom surface 1312, the first included angle α being an acute angle; there is a second included angle β between the second side surface 1321 and the second bottom surface 1322, the second included angle β being an obtuse angle.

[0063] Specifically, the first included angle α can be the slope angle of the first side surface 1311 of the first isolation portion 131. The range of the first included angle α is greater than or equal to 55 degrees and less than or equal to 75 degrees. It can be understood that in this embodiment, the first included angle α is an acute angle. By controlling the size of the first included angle α, the first side surface 1311 can be made more inclined or steeper, so that the luminescent material can better extend along the first side surface 1311 during deposition, reducing the pushing of the luminescent material on the first side surface 1311, and avoiding the phenomenon of the luminescent layer 142 being locally too thin or broken at the edge or sharp transition of the first isolation portion 131.

[0064] The second included angle β can be the slope angle of the second side surface 1321 of the second isolation part 132. The range of the second included angle β is greater than or equal to 100 degrees and less than or equal to 120 degrees. It can be understood that in this embodiment, the second included angle β is an obtuse angle. By controlling the size of the second included angle β, the width of the second top surface 1323 can be controlled, thereby controlling the size of the disconnected area of ​​the second isolation part 132 corresponding to the light-emitting layer 142, which can form a more effective isolation structure 13 and further prevent the lateral diffusion of charge.

[0065] Please refer to Figures 2 and 8. In one embodiment, the distance H1 between the side of the first isolation portion 131 away from the pixel definition layer 12 and the pixel definition layer 12 is greater than or equal to 1.2 micrometers and less than or equal to 1.8 micrometers; the distance H2 between the side of the second isolation portion 132 away from the pixel definition layer 12 and the pixel definition layer 12 is greater than or equal to 1 micrometer and less than or equal to 2 micrometers; the distance H2 between the side of the second isolation portion 132 away from the pixel definition layer 12 and the pixel definition layer 12 is greater than or equal to the distance H1 between the side of the first isolation portion 131 away from the pixel definition layer 12 and the pixel definition layer 12, thereby improving the ability of the second isolation portion 132 to block the light-emitting layer 142.

[0066] It should be noted that, compared to the case where the isolation structure 13 is not provided, in this embodiment, by providing the light-emitting layer 142 continuously at the position of the first isolation part 131, and the first side surface 1311 and the first bottom surface 1312 of the first isolation part 131 have a first included angle α, the path that the first isolation part 131 can extend is 2×(H1 / tan(α)).

[0067] Wherein, H1 is the thickness of the first isolation portion 131, and α is the first included angle α between the first side surface 1311 and the first bottom surface 1312 of the first isolation portion 131; wherein, in this embodiment, the technical solution of this application is illustrated by taking the thickness of the first isolation portion 131 as 1.5 micrometers and the first included angle α between the first side surface 1311 and the first bottom surface 1312 of the first isolation portion 131 as 65 degrees, that is, the path that the first isolation portion 131 can extend is 2×(1.5 / tan(65°))=1.5 micrometers.

[0068] It is understood that in this embodiment, the second electrode layer 143 is continuously disposed at the isolation structure 13. The isolation structure 13 includes a first isolation part 131 and a second isolation part 132 that are disposed separately. The light-emitting layer 142 is continuously disposed at the position of the first isolation part 131, thereby extending the charge transmission path of the light-emitting layer 142 at the position of the first isolation part 131, which has the effect of hindering the transverse charge transmission.

[0069] Meanwhile, by placing the first isolation portion 131 on the side of the pixel definition layer 12 away from the substrate 11, and with the first isolation portion 131 located within the non-aperture area 1202, the width of the non-aperture area of ​​the pixel definition layer 12 can be changed by controlling the width of the first isolation portion 131, thereby adjusting the pixel density of the display panel 1. For example, the PDL gap at the high-resolution WQ level can be increased to FHD+, or the width (gap) of the non-aperture area 1202 of the pixel definition layer 12 can be reduced from the WQ resolution design standard to the FHD+ resolution design standard, or the width (gap) of the non-aperture area 1202 of the pixel definition layer 12 can be reduced from the FHD+ resolution design standard to the FHD resolution design standard. This helps to reduce pixel density, reduce manufacturing costs and difficulties, and improve the problems of crosstalk and light leakage between adjacent pixels.

[0070] Please refer to Figure 9, which is a top view of the display panel provided in an embodiment of this application.

[0071] In one embodiment, the display panel 1 includes a plurality of sub-pixels 15 and a plurality of isolation structures 13; wherein, at least one sub-pixel 15 is surrounded by a plurality of isolation structures 13, and among the plurality of isolation structures 13 and their corresponding sub-pixels 15, the first isolation portion 131 is located on the side of the second isolation portion 132 away from the sub-pixel 15, or the first isolation portion 131 is located on the side of the second isolation portion 132 close to the sub-pixel 15, thereby reducing lateral leakage, i.e., charge unnecessarily flowing into pixel areas that should not be lit, thereby improving the accuracy and stability of the display; at the same time, by setting the position of the first isolation portion 131, good electrical contact between the second electrode layer 143 and the light-emitting layer 142 can be ensured, thereby reducing the impedance of the second electrode layer 143 and improving the luminous efficiency of the display panel 1.

[0072] Multiple isolation structures 13 can be disposed on multiple adjacent virtual quadrilaterals 16 and arranged in a honeycomb dot matrix. Each isolation structure 13 is disposed at the vertex position of the virtual quadrilateral 16, and at least one sub-pixel 15 is disposed at the center position of a virtual quadrilateral 16.

[0073] Specifically, the display panel 1 includes a plurality of first sub-pixels 151 displaying a first color, a plurality of second sub-pixels 152 displaying a second color, and a plurality of third sub-pixels 153 displaying a third color. The first color, the second color, and the third color are all different. In this embodiment, the first color is red, the second color is green, and the third color is blue as examples to illustrate the technical solution of this application.

[0074] A plurality of isolation structures 13 are arranged around a first sub-pixel 151, and the first isolation portion 131 is located on the side of the second isolation portion 132 closer to the first sub-pixel 151; a plurality of isolation structures 13 are arranged around a second sub-pixel 152, and the first isolation portion 131 is located on the side of the second isolation portion 132 away from the second sub-pixel 152; a plurality of isolation structures 13 are arranged around a third sub-pixel 153, and the first isolation portion 131 is located on the side of the second isolation portion 132 closer to the third sub-pixel 153; wherein, the luminous efficiency of the second sub-pixel 152 is greater than the luminous efficiency of either the first sub-pixel 151 or the third sub-pixel 153.

[0075] It is understandable that, since the luminous efficiency of the second sub-pixel 152 is greater than that of any one of the first sub-pixel 151 and the third sub-pixel 153, by placing the first isolation part 131 close to the high-efficiency sub-pixel 15 (the second sub-pixel 152), the flow of charge and light can be better controlled, reducing the excessive luminous emission of the high-efficiency sub-pixel 15, thereby balancing the overall display brightness. On the other hand, by placing the first isolation part 131 far away from the low-efficiency sub-pixel 15 (such as the first sub-pixel 151 and the third sub-pixel 153), the luminous flux in these areas can be increased to compensate for their lower luminous efficiency, achieving overall brightness balance. That is, this embodiment can make the brightness and color performance of the entire panel more uniform by adjusting the luminous amount and efficiency of each color sub-pixel 15, avoiding display unevenness caused by the difference in luminous efficiency of different color sub-pixels 15.

[0076] Please refer to Figure 10, which is a schematic diagram of the structure of the display device provided in the embodiment of this application.

[0077] This embodiment also provides a display device 4, which includes a terminal body 4A and a display panel 1, wherein the terminal body 4A and the display panel 1 are integrated into one unit; wherein the display panel 1 can be the display panel described in any of the above embodiments.

[0078] It is understood that the display panel 1 has been described in detail in the above embodiments and will not be repeated here; the terminal body 4A may include a middle frame, which is integrated with the display panel to provide support, fixation and protection for the display panel.

[0079] In specific applications, the display device can be at least one of the following devices with display functions: smartphone, tablet computer, mobile phone, video phone, e-book reader, desktop computer, laptop computer, netbook, workstation, server, personal digital assistant, portable media player, MP3 player, mobile medical device, camera, game console, digital camera, car navigation system, electronic billboard, ATM, or wearable device.

[0080] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0081] The technical solutions provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions in the embodiments of this application.

Claims

1. A display panel, wherein, include: substrate; A first electrode layer is disposed on one side of the substrate; A pixel definition layer is disposed on one side of the substrate. The pixel definition layer includes a pixel opening area and a non-opening area disposed between two adjacent pixel opening areas. An isolation structure is disposed on the side of the pixel definition layer away from the substrate, and the isolation structure is located within the non-opening area; A light-emitting layer is disposed on the pixel definition layer and covers the isolation structure; The second electrode layer is disposed on the side of the light-emitting layer away from the pixel definition layer, and the second electrode layer is continuously disposed at the isolation structure; The isolation structure includes a first isolation part and a second isolation part that are separately disposed. The light-emitting layer is continuously disposed at the location of the first isolation part, and the light-emitting layer is disposed separately at the location of the second isolation part.

2. The display panel according to claim 1, wherein, The width of the first isolation portion on the side away from the substrate is smaller than the width of the first isolation portion on the side close to the substrate, and the width of the second isolation portion on the side away from the substrate is larger than the width of the second isolation portion on the side close to the substrate.

3. The display panel according to claim 2, wherein, In the direction from the substrate to the isolation structure, the width of the first isolation portion gradually decreases, and the width of the second isolation portion gradually increases.

4. The display panel according to claim 3, wherein, In the direction perpendicular to the substrate, the cross-sectional shape of the first isolation portion is a regular trapezoid, and the cross-sectional shape of the second isolation portion is an inverted trapezoid.

5. The display panel according to any one of claims 1 to 4, wherein, The first isolation portion includes a first side surface and a first bottom surface, the first bottom surface is located on the side of the first isolation portion closer to the substrate, and there is a first included angle between the first side surface and the first bottom surface; The second isolation portion includes a second side surface and a second bottom surface, the second bottom surface being located on the side of the second isolation portion closer to the substrate, and a second included angle being formed between the second side surface and the second bottom surface; Wherein, the range of the first included angle is greater than or equal to 55 degrees and less than or equal to 75 degrees; the range of the second included angle is greater than or equal to 100 degrees and less than or equal to 120 degrees.

6. The display panel according to any one of claims 1 to 4, wherein, The distance between the side of the second isolation portion away from the pixel definition layer and the pixel definition layer is greater than or equal to the distance between the side of the first isolation portion away from the pixel definition layer and the pixel definition layer.

7. The display panel according to claim 6, wherein, The distance between the side of the first isolation portion away from the pixel definition layer and the pixel definition layer is greater than or equal to 1.2 micrometers and less than or equal to 1.8 micrometers; the distance between the side of the second isolation portion away from the pixel definition layer and the pixel definition layer is greater than or equal to 1 micrometer and less than or equal to 2 micrometers.

8. The display panel according to any one of claims 1 to 4, wherein, The display panel includes multiple sub-pixels and multiple isolation structures; In this configuration, at least one of the sub-pixels is surrounded by a plurality of isolation structures. In a sub-pixel corresponding to the plurality of isolation structures, the first isolation portion is located on the side of the second isolation portion away from the sub-pixel, or the first isolation portion is located on the side of the second isolation portion closer to the sub-pixel.

9. The display panel according to claim 8, wherein, The display panel includes a plurality of first sub-pixels displaying a first color, a plurality of second sub-pixels displaying a second color, and a plurality of third sub-pixels displaying a third color, wherein the first color, the second color, and the third color are all different; The plurality of said isolation structures are arranged around a first sub-pixel, and the first isolation portion is located on the side of the second isolation portion closer to the first sub-pixel; The plurality of said isolation structures are arranged around a second sub-pixel, and the first isolation portion is located on the side of the second isolation portion away from the second sub-pixel; The plurality of said isolation structures are arranged around a third sub-pixel, and the first isolation portion is located on the side of the second isolation portion closer to the third sub-pixel; The luminous efficiency of the second sub-pixel is greater than that of either the first sub-pixel or the third sub-pixel.

10. The display panel according to claim 8, wherein, Multiple isolation structures are disposed on multiple adjacent virtual quadrilaterals and arranged in a honeycomb dot matrix. Each isolation structure is disposed at a vertex position of the virtual quadrilateral, and at least one sub-pixel is disposed at the center position of a virtual quadrilateral.

11. The display panel according to claim 1, wherein, The light-emitting layer includes a first light-emitting part, a charge-generating layer, and a second light-emitting part stacked together. The first light-emitting part, the charge-generating layer, and the second light-emitting part are all continuously disposed at the location of the first isolation part, while the first light-emitting part, the charge-generating layer, and the second light-emitting part are all disconnected at the location of the second isolation part.

12. The display panel according to claim 11, wherein, The second electrode layer is in electrical contact with the light-emitting layer at the location of the first isolation portion, while the second electrode layer is not in contact with the charge-generating layer at the location of the first isolation portion.

13. A display device, wherein, The display device includes a display panel, the display panel comprising: substrate; A first electrode layer is disposed on one side of the substrate; A pixel definition layer is disposed on one side of the substrate. The pixel definition layer includes a pixel opening area and a non-opening area disposed between two adjacent pixel opening areas. An isolation structure is disposed on the side of the pixel definition layer away from the substrate, and the isolation structure is located within the non-opening area; A light-emitting layer is disposed on the pixel definition layer and covers the isolation structure; The second electrode layer is disposed on the side of the light-emitting layer away from the pixel definition layer, and the second electrode layer is continuously disposed at the isolation structure; The isolation structure includes a first isolation part and a second isolation part that are separately disposed. The light-emitting layer is continuously disposed at the location of the first isolation part, and the light-emitting layer is disposed separately at the location of the second isolation part.

14. The display device according to claim 13, wherein, The width of the first isolation portion on the side away from the substrate is smaller than the width of the first isolation portion on the side close to the substrate, and the width of the second isolation portion on the side away from the substrate is larger than the width of the second isolation portion on the side close to the substrate.

15. The display device according to claim 14, wherein, In the direction from the substrate to the isolation structure, the width of the first isolation portion gradually decreases, and the width of the second isolation portion gradually increases.

16. The display device according to claim 15, wherein, In the direction perpendicular to the substrate, the cross-sectional shape of the first isolation portion is a regular trapezoid, and the cross-sectional shape of the second isolation portion is an inverted trapezoid.

17. The display device according to any one of claims 13 to 16, wherein, The first isolation portion includes a first side surface and a first bottom surface, the first bottom surface is located on the side of the first isolation portion closer to the substrate, and there is a first included angle between the first side surface and the first bottom surface; The second isolation portion includes a second side surface and a second bottom surface, the second bottom surface being located on the side of the second isolation portion closer to the substrate, and a second included angle being formed between the second side surface and the second bottom surface; Wherein, the range of the first included angle is greater than or equal to 55 degrees and less than or equal to 75 degrees; the range of the second included angle is greater than or equal to 100 degrees and less than or equal to 120 degrees.

18. The display device according to any one of claims 13 to 16, wherein, The distance between the side of the second isolation portion away from the pixel definition layer and the pixel definition layer is greater than or equal to the distance between the side of the first isolation portion away from the pixel definition layer and the pixel definition layer.

19. The display device according to claim 18, wherein, The distance between the side of the first isolation portion away from the pixel definition layer and the pixel definition layer is greater than or equal to 1.2 micrometers and less than or equal to 1.8 micrometers; the distance between the side of the second isolation portion away from the pixel definition layer and the pixel definition layer is greater than or equal to 1 micrometer and less than or equal to 2 micrometers.

20. The display device according to any one of claims 13 to 16, wherein, The display panel includes multiple sub-pixels and multiple isolation structures; In this configuration, at least one of the sub-pixels is surrounded by a plurality of isolation structures. In a sub-pixel corresponding to the plurality of isolation structures, the first isolation portion is located on the side of the second isolation portion away from the sub-pixel, or the first isolation portion is located on the side of the second isolation portion closer to the sub-pixel.

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