Display panel and display apparatus

Abstract

Provided are a display panel (100) and a display apparatus (1000). The display panel (100) comprises an array substrate (1) and a light-emitting device layer (2), wherein the light-emitting device layer (2) is disposed on the array substrate (1); the light-emitting device layer (2) comprises an anode layer (20), a functional layer (21), a light-emitting layer (22), and a cathode layer (23); a first shielding layer (24) is additionally provided in the light-emitting device layer (2); the first shielding layer (24) is partially disposed between a first functional unit (211) and a second functional unit (212) of the functional layer (21); and the first shielding layer (24) separates the first functional unit (211) from the second functional unit (212).

Description

Display panel and display device

[0001] This application claims priority to Chinese patent application No. 202510231591.1, filed on February 27, 2025, 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) display technology is considered an emerging application technology for next-generation flat panel displays due to its superior characteristics, including self-illumination, high contrast, thinness, wide viewing angle, fast response speed, wide operating temperature range, and relatively simple structure and manufacturing process. An OLED display panel typically includes an array substrate, an anode layer, a hole injection layer, a hole transport layer, an emissive layer, an electron transport layer, an electron injection layer, and a cathode layer disposed on the array substrate. During operation, holes from the anode and electrons from the cathode are emitted into the emissive layer. These electrons and holes combine to generate excited electron-hole pairs, and the excited electron-hole pairs are then converted from the excited state to the ground state to achieve light emission. Invention Overview

[0004] Currently, because the functional layer near the anode has good conductivity, when controlling the light emission of a certain pixel, holes flow from the anode layer to the cathode layer and also reach the adjacent pixels through the functional layer near the anode, resulting in lateral leakage current. This causes crosstalk, ghosting and other phenomena in the display panel, resulting in poor display effect.

[0005] Therefore, it is necessary to provide a display panel and display device to improve this deficiency.

[0006] In a first aspect, embodiments of this application provide a display panel, including an array substrate and a light-emitting device layer, wherein the light-emitting device layer is disposed on the array substrate, and the light-emitting device layer includes:

[0007] An anode layer is disposed on the array substrate;

[0008] A functional layer is disposed on the anode layer, and the functional layer includes a first functional unit and a second functional unit;

[0009] A light-emitting layer is disposed on the functional layer. The light-emitting layer includes a first light-emitting unit and a second light-emitting unit. The first light-emitting unit is disposed on the first functional unit, and the second light-emitting unit is disposed on the second functional unit. The first light-emitting unit and the second light-emitting unit emit different colors.

[0010] A cathode layer is disposed on the light-emitting layer;

[0011] The light-emitting device layer further includes a first shielding layer, which is partially disposed at the junction of the first functional unit and the second functional unit. The first shielding layer separates the first functional unit and the second functional unit, and the carrier mobility of the first shielding layer is less than that of the functional layer.

[0012] Secondly, embodiments of this application provide a display device, including the display panel as described above. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments disclosed. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 is a schematic diagram of the structure of a first type of display panel provided in an embodiment of this application;

[0015] Figure 2 is a schematic diagram of the structure of a second type of display panel provided in an embodiment of this application;

[0016] Figure 3 is a schematic diagram of the structure of a third type of display panel provided in an embodiment of this application;

[0017] Figure 4 is a schematic diagram of the structure of the fourth type of display panel provided in the embodiments of this application;

[0018] Figure 5 is a schematic diagram of the structure of the display device provided in an embodiment of this application.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Array substrate;

[0021] 2. Light-emitting device layer; 20. Anode layer; 201. Anode; 21. Functional layer; 211. First functional unit; 212. Second functional unit; 213. Third functional unit; 22. Light-emitting layer; 221. First light-emitting unit; 222. Second light-emitting unit; 223. Third light-emitting unit; 23. Cathode layer; 24. First shielding layer; 241. First shielding unit; 242. Second shielding unit; 243. Second shielding layer; 25. Hole injection layer; 26. Hole transport layer; 27. Electron injection control layer; 28. Electron transport layer; 29. ​​Electron injection layer;

[0022] 100, Display panel; 200, Housing; 1000, Display device. Embodiments of the present invention

[0023] 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.

[0024] In the description of this application, it should be understood that the terms "upper," "lower," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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. 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 indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] Reference numerals and / or reference letters may be repeated in different embodiments of this application. Such repetition is for the purpose of simplification and clarity and does not in itself indicate the relationship between the various implementations and / or settings discussed.

[0026] The embodiments of this application provide a display panel and a display device that can solve the problem of lateral leakage current and improve the display effect of the display panel.

[0027] To achieve the above objectives, according to a first aspect of this application, a display panel is provided, comprising an array substrate and a light-emitting device layer, wherein the light-emitting device layer is disposed on the array substrate, and the light-emitting device layer comprises:

[0028] An anode layer is disposed on the array substrate;

[0029] A functional layer is disposed on the anode layer, and the functional layer includes a first functional unit and a second functional unit;

[0030] A light-emitting layer is disposed on the functional layer. The light-emitting layer includes a first light-emitting unit and a second light-emitting unit. The first light-emitting unit is disposed on the first functional unit, and the second light-emitting unit is disposed on the second functional unit. The first light-emitting unit and the second light-emitting unit emit different colors.

[0031] A cathode layer is disposed on the light-emitting layer;

[0032] The light-emitting device layer further includes a first shielding layer, which is partially disposed at the junction of the first functional unit and the second functional unit. The first shielding layer separates the first functional unit and the second functional unit, and the carrier mobility of the first shielding layer is less than that of the functional layer.

[0033] Optionally, the first shielding layer includes a first shielding unit, which is disposed on the surface of the first functional unit near the first light-emitting unit and covers the first functional unit along the film thickness direction of the first shielding layer.

[0034] Optionally, the end of the second functional unit near the first functional unit is disposed on the surface of the first shielding unit away from the first functional unit.

[0035] Optionally, the first shielding layer includes a second shielding unit, which is disposed on the surface of the second functional unit near the second light-emitting unit and covers the second functional unit along the film thickness direction of the first shielding layer.

[0036] Optionally, the first functional unit and the second functional unit are spaced apart, and the end of the second shielding unit closest to the first functional unit overlaps with the first shielding unit.

[0037] Optionally, the light-emitting device layer further includes a second shielding layer, which is disposed on the side of the first functional unit near the anode layer;

[0038] Wherein, the orthographic projection of the first functional unit on the second shielding layer is located within the second shielding layer, the edge of the second shielding layer is connected to the edge of the first shielding unit and surrounds the first functional unit, and the carrier mobility of the second shielding layer is less than the carrier mobility of the functional layer.

[0039] Optionally, the materials of the first shielding layer and the second shielding layer include triarylamine derivatives, wherein the triarylamine derivative has at least one electron-deficient group.

[0040] Optionally, the thickness of the first shielding layer is less than the thickness of the functional layer.

[0041] Optionally, the thickness of the first shielding layer is greater than or equal to 10 angstroms and less than or equal to 500 angstroms, and the thickness of the functional layer is greater than or equal to 50 angstroms and less than or equal to 1000 angstroms.

[0042] Optionally, the first light-emitting unit emits red light, and the second light-emitting unit emits green light.

[0043] According to a second aspect of the application, a display device is provided, the display device comprising a display panel as described above.

[0044] In the display panel of this application embodiment, by adding a first shielding layer in the light-emitting device layer and partially disposing the first shielding layer between the first functional unit and the second functional unit, the first shielding layer separates the first functional unit and the second functional unit. Since the carrier mobility of the first shielding layer is small, it can block the lateral leakage current between the first functional unit and the second functional unit. Therefore, it can prevent crosstalk, ghosting and other phenomena from occurring in the display panel, thereby improving the display effect of the display panel.

[0045] An embodiment of this application provides a display panel, which includes an array substrate and a light-emitting device layer. The light-emitting device layer is disposed on the array substrate and includes an anode layer, a functional layer, a light-emitting layer, and a cathode layer. The functional layer is disposed on the anode layer and includes a first functional unit and a second functional unit. The light-emitting layer is disposed on the functional layer and includes a first light-emitting unit and a second light-emitting unit. The first light-emitting unit is disposed on the first functional unit, and the second light-emitting unit is disposed on the second functional unit. The first light-emitting unit and the second light-emitting unit emit different colors. The cathode layer is disposed on the light-emitting layer. The light-emitting device layer also includes a first shielding layer. The first shielding layer is partially disposed at the junction of the first functional unit and the second functional unit, separating the first functional unit and the second functional unit. The carrier mobility of the first shielding layer is less than that of the functional layer.

[0046] In the embodiments of this application, by adding a first shielding layer in the light-emitting device layer and partially placing the first shielding layer between the first functional unit and the second functional unit, the first shielding layer separates the first functional unit and the second functional unit. Since the carrier mobility of the first shielding layer is small, it can block the lateral leakage current between the first functional unit and the second functional unit. Therefore, it can prevent crosstalk, ghosting and other phenomena from occurring in the display panel, thereby improving the display effect of the display panel.

[0047] Please refer to Figure 1. Figure 1 is a schematic diagram of the structure of a first type of display panel provided in the embodiment of this application. The display panel 100 includes an array substrate 1 and a light-emitting device layer 2, which is disposed on the array substrate 1.

[0048] In some embodiments, the array substrate 1 includes a substrate and a driving circuit layer (not shown) disposed on the substrate. The substrate can be a flexible substrate or a rigid substrate. The driving circuit layer is formed by stacking an active layer, a metal layer, and an insulating layer, and pixel driving circuits are formed in the driving circuit layer. The array substrate 1 can be replaced with an array substrate in a known display panel to achieve the same or similar functions.

[0049] Please refer to Figure 1. The light-emitting device layer 2 includes an anode layer 20, a functional layer 21, a light-emitting layer 22, and a cathode layer 23. The anode layer 20 is disposed on the array substrate 1, the functional layer 21 is disposed on the anode layer 20, the light-emitting layer 22 is disposed on the functional layer 21, and the cathode layer 23 is disposed on the light-emitting layer 22.

[0050] Please refer to Figure 1. The anode layer 20 has multiple patterned anodes 201, which are electrically connected to the corresponding pixel driving circuits in the array substrate 1.

[0051] Please refer to Figure 1. The functional layer 21 includes a first functional unit 211 and a second functional unit 212, which are respectively disposed on the corresponding anodes 201. The light-emitting layer 22 includes a first light-emitting unit 221 and a second light-emitting unit 222, with the first light-emitting unit 221 disposed on the first functional unit 211 and the second light-emitting unit 222 disposed on the second functional unit 212. The first light-emitting unit 221 and the second light-emitting unit 222 emit different colors. The cathode layer 23 is disposed on the first light-emitting unit 221 and the second light-emitting unit 222, and the cathode layer 23 is disposed on the entire surface.

[0052] Please refer to Figure 1. The light-emitting device layer 2 also includes a first shielding layer 24. The first shielding layer 24 is partially disposed at the junction of the first functional unit 211 and the second functional unit 212. At the junction of the first functional unit 211 and the second functional unit 212, the first shielding layer 24 is disposed between the first functional unit 211 and the second functional unit 212, and the first shielding layer 24 separates the first functional unit 211 and the second functional unit 212. The carrier mobility of the first shielding layer 24 is less than the carrier mobility of the functional layer 21.

[0053] In the embodiments of this application, by adding a first shielding layer 24 to the light-emitting device layer 2 and partially disposing the first shielding layer 24 between the first functional unit 211 and the second functional unit 212, the first shielding layer 24 separates the first functional unit 211 and the second functional unit 212. Since the carrier mobility of the first shielding layer 24 is smaller than that of the functional layer 21, the first shielding layer 24 can block the lateral leakage current between the first functional unit 211 and the second functional unit 212. Therefore, it can prevent crosstalk, ghosting and other phenomena from occurring in the display panel, thereby improving the display effect of the display panel.

[0054] In some embodiments, referring to FIG1, the light-emitting device layer 2 further includes a hole injection layer 25, a hole transport layer 26, an electron injection control layer 27, an electron transport layer 28, and an electron injection layer 29. The hole injection layer 25 is disposed on the anode layer 20, the hole transport layer 26 is disposed on the hole injection layer 25, the functional layer 21 is disposed on the hole transport layer 26, the electron injection control layer 27 is disposed on the light-emitting layer 22, the electron transport layer 28 is disposed on the electron injection control layer 27, the electron injection layer 29 is disposed on the electron transport layer 28, and the cathode layer 23 is disposed on the electron injection layer 29.

[0055] In the embodiments of this application, the functional layer 21 plays a role in regulating hole transport, and the material of the functional layer 21 is a triarylamine derivative.

[0056] In some embodiments, please refer to FIG1, the first shielding layer 24 includes a first shielding unit 241, which is disposed on the surface of the first functional unit 211 near the first light-emitting unit 221 and covers the first functional unit 211 along the film thickness direction of the first shielding layer 24.

[0057] Referring to Figure 1, the first shielding unit 241 completely covers the first functional unit 211, meaning that the first shielding unit 241 covers not only the middle part of the first functional unit 211 but also its edges. At the junction of the first functional unit 211 and the second functional unit 212, the first shielding unit 241 covers the end of the first functional unit 211 closest to the second functional unit 212. In this way, the first shielding unit 241 can separate the first functional unit 211 and the second functional unit 212. Since the carrier mobility of the first shielding layer 24 is smaller than that of the functional layer 21, the first shielding layer 24 can block the lateral leakage current between the first functional unit 211 and the second functional unit 212. Therefore, it can prevent crosstalk, ghosting, and other phenomena from occurring on the display panel, thereby improving the display effect of the display panel.

[0058] In some embodiments, referring to FIG1, the end of the second functional unit 212 near the first functional unit 211 is disposed on the surface of the first shielding unit 241 away from the first functional unit 211. The first shielding unit 241 separates the end of the second functional unit 212 near the first functional unit 211 from the first functional unit 211. Since the carrier mobility of the first shielding layer 24 is smaller than that of the functional layer 21, the first shielding layer 24 can block the lateral leakage current between the first functional unit 211 and the second functional unit 212, thereby preventing crosstalk, ghosting and other phenomena from appearing on the display panel, thereby improving the display effect of the display panel.

[0059] In some embodiments, the material of the first shielding layer 24 includes a triarylamine derivative having at least one electron-deficient group, which may be a dibenzofuran. This allows the first shielding layer 24 to have a lower carrier mobility than the functional layer 21, ensuring that the first shielding layer 24 can block the lateral leakage current between the first functional unit 211 and the second functional unit 212, preventing crosstalk, ghosting, and other phenomena in the display panel, thereby improving the display effect of the display panel.

[0060] In some embodiments, the thickness of the first shielding layer 24 is less than the thickness of the functional layer 21. It should be noted that, due to the poor hole transport layer of the first shielding layer 24, if the thickness of the first shielding layer 24 is too large, hole transport in the light-emitting device will be blocked, leading to a reduction in the luminous efficiency of the light-emitting device. By making the thickness of the first shielding layer 24 less than the thickness of the functional layer 21, while ensuring high luminous efficiency of the light-emitting device, the first shielding layer 24 can block the lateral leakage current between the first functional unit 211 and the second functional unit 212, preventing crosstalk, ghosting, and other phenomena in the display panel, thereby improving the display effect of the display panel.

[0061] In some embodiments, the thickness of the first shielding layer 24 is greater than or equal to 10 angstroms and less than or equal to 500 angstroms. It should be noted that if the thickness of the first shielding layer 24 is too thin, it cannot effectively block the lateral leakage current between the first functional unit 211 and the second functional unit 212, resulting in crosstalk and ghosting phenomena still existing on the display panel. If the thickness of the first shielding layer 24 is too large, it will obstruct hole transport in the light-emitting device, leading to a reduction in the luminous efficiency of the light-emitting device. This embodiment, by limiting the thickness of the first shielding layer 24 to between 10 angstroms and 500 angstroms, can ensure high luminous efficiency of the light-emitting device while using the first shielding layer 24 to block the lateral leakage current between the first functional unit 211 and the second functional unit 212, thereby preventing crosstalk, ghosting, and other phenomena on the display panel and improving the display effect.

[0062] In some embodiments, the thickness of the functional layer 21 is greater than or equal to 50 angstroms and less than or equal to 1000 angstroms. It should be noted that if the functional layer 21 is too thin, its effect on regulating hole transport will be poor, resulting in low luminous efficiency of the light-emitting device. If the functional layer 21 is too thick, the first shielding layer 24 will be unable to cover the first functional unit 211, resulting in lateral leakage current between the first functional unit 211 and the second functional unit 212, causing crosstalk, ghosting, and other problems to still occur in the display panel. This embodiment, by limiting the thickness of the functional layer 21 to between 50 angstroms and 1000 angstroms, ensures that the light-emitting device has high luminous efficiency while ensuring that the first shielding layer 24 can cover the first functional unit 211, thereby blocking the lateral leakage current between the first functional unit 211 and the second functional unit 212, preventing crosstalk, ghosting, and other phenomena in the display panel, and thus improving the display effect of the display panel.

[0063] In some embodiments, please refer to FIG2, which is a schematic diagram of the structure of a second display panel provided in the embodiments of this application. Its structure is roughly the same as that of the display panel shown in FIG1, except that the first shielding layer 24 further includes a second shielding unit 242. The second shielding unit 242 is disposed on the surface of the second functional unit 212 near the second light-emitting unit 222, and covers the second functional unit 212 along the film thickness direction of the first shielding layer 24. Based on the first shielding unit 241 covering the first functional unit 211 to separate the first functional unit 211 from the second functional unit 212, the thickness of the shielding layer between the first functional unit 211 and the second functional unit 212 is increased by covering the second functional unit 212 with the second shielding unit 242, thereby blocking the lateral leakage current between the first functional unit 211 and the second functional unit 212. Therefore, crosstalk, ghosting and other phenomena can be prevented from occurring in the display panel, thereby further improving the display effect of the display panel.

[0064] In some embodiments, please refer to FIG2, the first functional unit 211 and the second functional unit 212 are spaced apart, and the end of the second shielding unit 242 near the first functional unit 211 overlaps with the first shielding unit 241. This can increase the thickness of the shielding layer between the first functional unit 211 and the second functional unit 212, and block the lateral leakage current between the first functional unit 211 and the second functional unit 212. Therefore, it can prevent crosstalk, ghosting and other phenomena from appearing on the display panel, thereby further improving the display effect of the display panel.

[0065] In some embodiments, please refer to FIG3, which is a schematic diagram of the structure of a third type of display panel provided in the embodiments of this application. Its structure is generally the same as that of the display panel shown in FIG1, except that: the light-emitting device layer 2 further includes a second shielding layer 243, which is disposed on the side of the first functional unit 211 near the anode layer 20. The orthographic projection of the first functional unit 211 onto the second shielding layer 243 is located within the second shielding layer 243. The edge of the second shielding layer 243 is connected to the edge of the first shielding unit 241 and surrounds the first functional unit 211. The carrier mobility of the second shielding layer 243 is less than that of the functional layer 21.

[0066] In some embodiments, referring to FIG3, a second shielding layer 243 is disposed on the surface of the hole transport layer 26 away from the anode layer 20, and a first functional unit 211 is disposed on the surface of the second shielding layer 243 away from the hole transport layer 26. The area of ​​the second shielding layer 243 is larger than the area of ​​the first functional unit 211, so that the orthographic projection of the first functional unit 211 on the second shielding layer 243 is located within the second shielding layer 243. The edge of the second shielding layer 243 connects with the edge of the first shielding unit 241 and encloses it to form a closed receiving cavity, in which the first functional unit 211 is housed. In this way, the second shielding layer 243 can be used to separate the bottom surface of the first functional unit 211 from the second functional unit 212, and the first shielding unit 241 can be used to separate the upper surface of the first functional unit 211 from the second functional unit 212, thereby blocking the lateral leakage current between the first functional unit 211 and the second functional unit 212. Therefore, crosstalk, ghosting and other phenomena can be prevented from occurring in the display panel, thereby further improving the display effect of the display panel.

[0067] In some embodiments, the material of the second shielding layer 243 includes a triarylamine derivative having at least one electron-deficient group, which may be a dibenzofuran. This allows the second shielding layer 243 to have a lower carrier mobility than the functional layer 21, ensuring that the second shielding layer 243 can block the lateral leakage current between the first functional unit 211 and the second functional unit 212, preventing crosstalk, ghosting, and other phenomena in the display panel, thereby improving the display effect of the display panel.

[0068] In some embodiments, the first shielding layer 24 and the second shielding layer 243 are made of the same material.

[0069] In some embodiments, the thickness of the second shielding layer 243 is greater than or equal to 10 angstroms and less than or equal to 500 angstroms. It should be noted that, due to the poor hole transport layer of the second shielding layer 243, if the thickness of the second shielding layer 243 is too large, hole transport in the light-emitting device will be blocked, leading to a decrease in the luminous efficiency of the light-emitting device. By making the thickness of the second shielding layer 243 less than the thickness of the functional layer 21, while ensuring high luminous efficiency of the light-emitting device, the second shielding layer 243 can block the lateral leakage current between the first functional unit 211 and the second functional unit 212, thereby preventing crosstalk, ghosting, and other phenomena in the display panel and improving the display effect of the display panel.

[0070] In some embodiments, please refer to FIG1, the first light-emitting unit 221 emits red light and the second light-emitting unit 222 emits green light.

[0071] In some embodiments, please refer to FIG4, which is a schematic diagram of the structure of a fourth display panel provided in the embodiments of this application. Its structure is roughly the same as that of the display panel shown in FIG1, except that: the functional layer 21 further includes a third functional unit 213, which is disposed on the surface of the hole transport layer 26 away from the anode layer 20, and the light-emitting layer 22 further includes a third light-emitting unit 223, which is disposed on the surface of the third functional unit 213 away from the hole transport layer 26, and the third light-emitting unit 223 emits green light.

[0072] In this embodiment, there is no lateral leakage current between the first functional unit 211 and the third functional unit 213, and there is also no lateral leakage current between the second functional unit 212 and the third functional unit 213. Therefore, the first shielding layer 24 and the second shielding layer 243 are not provided on the upper and lower sides of the third functional unit 213. That is, along the film thickness direction of the first shielding layer 24, the third functional unit 213 and the first shielding layer 24 are separated and do not overlap. The third functional unit 213 and the second shielding layer 243 are also separated and do not overlap.

[0073]

[0074] Table 1. Luminous efficiency of light-emitting devices

[0075] As shown in Table 1, Table 1 shows the luminous efficiency of the light-emitting device provided in the embodiments of this application. R% is the brightness of white light at 2 nit L64 under monochrome R screen / brightness of white screen R splitting, G% is the brightness of white light at 2 nit L64 under monochrome G screen / brightness of white screen G splitting, and efficiency is the monochrome current efficiency at 600 nit white light. In Comparative Example 1, the light-emitting device layer only has a functional layer and does not have a first shielding layer or a second shielding layer. In Comparative Example 2, the light-emitting device layer has a functional layer and a shielding layer is provided below the functional layer, but the shielding layer does not separate the first functional unit and the second functional unit. Embodiment 1 is a first type of display panel provided by an embodiment of this application, Embodiment 2 is a second type of display panel provided by an embodiment of this application, and Embodiment 3 is a third type of display panel provided by an embodiment of this application. As can be seen from Table 1, setting a first shielding unit covering the first functional unit, setting a first shielding unit and a second shielding layer on the upper and lower sides of the first functional unit respectively, and setting a first shielding unit and a second shielding unit on the first functional unit and the second functional unit respectively can all significantly improve the brightness and luminous efficiency of the red and green light-emitting devices when white light is 2 nit L64.

[0076] Based on the display panel provided in the above embodiments of this application, embodiments of this application also provide a display device. Please refer to FIG5, which is a schematic structural diagram of the display device provided in the embodiments of this application. The display device 1000 includes a display panel 100 and a housing 200, with the display panel 100 disposed on the housing 200. The display device 1000 can be any of the display panels provided in the above embodiments. The display device provided in the embodiments of this application can achieve the same technical effects as the display panels provided in any of the above embodiments, and will not be elaborated upon here.

[0077] The beneficial effects of the embodiments of this application are as follows: The embodiments of this application provide a display panel, a display panel array substrate and a light-emitting device layer. The light-emitting device layer is disposed on the array substrate and includes an anode layer, a functional layer, a light-emitting layer and a cathode layer. By adding a first shielding layer to the light-emitting device layer and partially disposing the first shielding layer between the first functional unit and the second functional unit of the functional layer, the first functional unit and the second functional unit are separated by the first shielding layer. Since the carrier mobility of the first shielding layer is small, it can block the lateral leakage current between the first functional unit and the second functional unit. Therefore, it can prevent crosstalk, ghosting and other phenomena from occurring in the display panel, thereby improving the display effect of the display panel.

[0078] In the description of this application, 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. Therefore, a feature 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, unless otherwise explicitly specified.

[0079] 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.

[0080] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0081] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A display panel, comprising an array substrate and a light-emitting device layer, wherein the light-emitting device layer is disposed on the array substrate, and the light-emitting device layer comprises: An anode layer is disposed on the array substrate; A functional layer is disposed on the anode layer, and the functional layer includes a first functional unit and a second functional unit; A light-emitting layer is disposed on the functional layer. The light-emitting layer includes a first light-emitting unit and a second light-emitting unit. The first light-emitting unit is disposed on the first functional unit, and the second light-emitting unit is disposed on the second functional unit. The first light-emitting unit and the second light-emitting unit emit different colors. as well as A cathode layer is disposed on the light-emitting layer; The light-emitting device layer further includes a first shielding layer, which is partially disposed at the junction of the first functional unit and the second functional unit. The first shielding layer separates the first functional unit and the second functional unit, and the carrier mobility of the first shielding layer is less than that of the functional layer.

2. The display panel as claimed in claim 1, wherein, The first shielding layer includes a first shielding unit, which is disposed on the surface of the first functional unit near the first light-emitting unit and covers the first functional unit along the film thickness direction of the first shielding layer.

3. The display panel as described in claim 2, wherein, The second functional unit is disposed on the surface of the first shielding unit away from the first functional unit, at the end closest to the first functional unit.

4. The display panel as claimed in claim 2, wherein, The first shielding layer includes a second shielding unit, which is disposed on the surface of the second functional unit near the second light-emitting unit and covers the second functional unit along the film thickness direction of the first shielding layer.

5. The display panel as claimed in claim 4, wherein, The first functional unit and the second functional unit are arranged at intervals, and the end of the second shielding unit near the first functional unit overlaps with the first shielding unit.

6. The display panel as claimed in claim 2, wherein, The light-emitting device layer further includes a second shielding layer, which is disposed on the side of the first functional unit near the anode layer; Wherein, the orthographic projection of the first functional unit on the second shielding layer is located within the second shielding layer, the edge of the second shielding layer is connected to the edge of the first shielding unit and surrounds the first functional unit, and the carrier mobility of the second shielding layer is less than the carrier mobility of the functional layer.

7. The display panel as claimed in claim 6, wherein, The materials of the first shielding layer and the second shielding layer include triarylamine derivatives, wherein the triarylamine derivatives have at least one electron-deficient group.

8. The display panel as claimed in claim 1, wherein, The thickness of the first shielding layer is less than the thickness of the functional layer.

9. The display panel as claimed in claim 8, wherein, The thickness of the first shielding layer is greater than or equal to 10 angstroms and less than or equal to 500 angstroms, and the thickness of the functional layer is greater than or equal to 50 angstroms and less than or equal to 1000 angstroms.

10. The display panel as claimed in claim 1, wherein, The first light-emitting unit emits red light, and the second light-emitting unit emits green light.

11. A display device comprising a display panel, the display panel including an array substrate and a light-emitting device layer, the light-emitting device layer being disposed on the array substrate, the light-emitting device layer comprising: An anode layer is disposed on the array substrate; A functional layer is disposed on the anode layer, and the functional layer includes a first functional unit and a second functional unit; A light-emitting layer is disposed on the functional layer. The light-emitting layer includes a first light-emitting unit and a second light-emitting unit. The first light-emitting unit is disposed on the first functional unit, and the second light-emitting unit is disposed on the second functional unit. The first light-emitting unit and the second light-emitting unit emit different colors. as well as A cathode layer is disposed on the light-emitting layer; The light-emitting device layer further includes a first shielding layer, which is partially disposed at the junction of the first functional unit and the second functional unit. The first shielding layer separates the first functional unit and the second functional unit, and the carrier mobility of the first shielding layer is less than that of the functional layer.

12. The display device as claimed in claim 11, wherein, The first shielding layer includes a first shielding unit, which is disposed on the surface of the first functional unit near the first light-emitting unit and covers the first functional unit along the film thickness direction of the first shielding layer.

13. The display device as claimed in claim 12, wherein, The second functional unit is disposed on the surface of the first shielding unit away from the first functional unit, at the end closest to the first functional unit.

14. The display device as claimed in claim 12, wherein, The first shielding layer includes a second shielding unit, which is disposed on the surface of the second functional unit near the second light-emitting unit and covers the second functional unit along the film thickness direction of the first shielding layer.

15. The display device as claimed in claim 14, wherein, The first functional unit and the second functional unit are arranged at intervals, and the end of the second shielding unit near the first functional unit overlaps with the first shielding unit.

16. The display device as claimed in claim 12, wherein, The light-emitting device layer further includes a second shielding layer, which is disposed on the side of the first functional unit near the anode layer; Wherein, the orthographic projection of the first functional unit on the second shielding layer is located within the second shielding layer, the edge of the second shielding layer is connected to the edge of the first shielding unit and surrounds the first functional unit, and the carrier mobility of the second shielding layer is less than the carrier mobility of the functional layer.

17. The display device as claimed in claim 16, wherein, The materials of the first shielding layer and the second shielding layer include triarylamine derivatives, wherein the triarylamine derivatives have at least one electron-deficient group.

18. The display device as claimed in claim 11, wherein, The thickness of the first shielding layer is less than the thickness of the functional layer.

19. The display device as claimed in claim 18, wherein, The thickness of the first shielding layer is greater than or equal to 10 angstroms and less than or equal to 500 angstroms, and the thickness of the functional layer is greater than or equal to 50 angstroms and less than or equal to 1000 angstroms.

20. The display device as claimed in claim 11, wherein, The first light-emitting unit emits red light, and the second light-emitting unit emits green light.

Images