Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a substrate, an isolation structure, a light-emitting functional layer and an optical layer, the light-emitting functional layer is arranged on one side of the substrate and comprises a plurality of light-emitting structures; the isolation structure is arranged on one side of the substrate, the isolation structure is arranged around the light-emitting structure, and the isolation structure comprises a first isolation part; the optical layer is arranged on the side, away from the substrate, of the first isolation part and covers at least part of the surface of the side, away from the substrate, of the first isolation part, and the light reflectivity of the optical layer is smaller than the first light reflectivity of the first isolation part. According to the display panel, the optical layer is arranged to cover at least part of the surface of the side, away from the substrate, of the first isolation part, the light reflectivity of the optical layer is smaller than the first light reflectivity of the first isolation part, reflection of the first isolation part to ambient light can be reduced, and then interference of the ambient light to normal display of the display panel is reduced; and the display effect of the display panel can be improved.

Description

Technical Field

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

[0002] Organic Light-Emitting Diode (OLED) is an active light-emitting device. Compared with the traditional liquid crystal display (LCD) display method, OLED display technology does not require a backlight and has the characteristic of self-luminescence. OLED uses a thinner organic material film layer and a glass substrate. When an electric current passes through, the organic material will emit light. Therefore, OLED display panels can significantly save electricity, can be made lighter and thinner, can withstand a wider range of temperature changes than LCD display panels, and have a larger viewing angle. OLED display panels are expected to become the next generation of flat-panel display technology after LCD, and are one of the most popular technologies in flat-panel display technology.

[0003] However, the performance of current OLED display products needs to be improved. Summary of the invention

[0004] In order to solve the above problems or other problems, the present application provides the following technical solutions.

[0005] In a first aspect, the display panel provided by the embodiment of the present application includes a substrate, an isolation structure, a light-emitting functional layer and a light-absorbing layer; the light-emitting functional layer is arranged on one side of the substrate, and the light-emitting functional layer includes a plurality of light-emitting structures; the isolation structure is arranged on one side of the substrate, and the isolation structure is arranged around the light-emitting structure, and the isolation structure includes a first isolation portion, and the first isolation portion has a first light reflectivity; the light-absorbing layer is arranged on a side of the first isolation portion away from the substrate, and covers at least a portion of the surface of the first isolation portion away from the substrate, and the light-absorbing layer has a second light reflectivity, and the second light reflectivity is less than the first light reflectivity.

[0006] In some embodiments, the first isolation portion has a top surface and a side surface, the top surface is disposed away from the substrate, the side surface is located around the top surface, and the light absorption layer covers the top surface.

[0007] In some embodiments, the light absorbing layer covers the top surface and at least a portion of the side surface.

[0008] In some embodiments, the material of the light absorbing layer includes an organic material.

[0009] In some embodiments, the material of the light absorbing layer includes black organic glue, and the black organic glue includes at least one of polyvinyl chloride resin, polyimide and polypropylene.

[0010] In some embodiments, a surface of the first partition portion in contact with the light absorbing layer is rough.

[0011] In some embodiments, the light absorbing layer has a first surface, a second surface and a third surface, the first surface is arranged to face away from the substrate, the second surface is arranged to face the substrate, the third surface connects the first surface and the second surface, and the orthographic projection of the first surface on the substrate is located within the orthographic projection of the second surface on the substrate.

[0012] In some embodiments, the isolation structure includes a plurality of isolation openings, at least a portion of each light emitting structure is located in a corresponding isolation opening, and the display panel further includes:

[0013] The first encapsulation layer includes a plurality of first encapsulation parts, each of which is located at a side of the corresponding light emitting structure away from the substrate and extends to a side of the light absorbing layer away from the substrate via the isolation structure.

[0014] In some embodiments, a distance is provided between the first encapsulation portion and the first surface.

[0015] In some embodiments, the display panel further includes a second encapsulation layer, which is disposed on a side of the light absorbing layer away from the substrate, and the second encapsulation layer is in contact with at least a portion of the first surface.

[0016] In some embodiments, the cross-sectional area of ​​the light absorbing layer gradually decreases along a direction from the second surface to the first surface.

[0017] In some embodiments, the material of the first encapsulation layer includes an inorganic material, and the material of the second encapsulation layer includes an organic material.

[0018] In some embodiments, the materials of the light absorbing layer and the first encapsulation layer both include inorganic materials.

[0019] In some embodiments, the thickness of the light absorbing layer is no greater than 0.5 μm.

[0020] In some embodiments, the isolation structure further includes a second isolation portion, which is disposed between the first isolation portion and the substrate, and an orthographic projection of the second isolation portion on the substrate is located within an orthographic projection of the first isolation portion on the substrate.

[0021] In some embodiments, a cross-section of the second isolation portion gradually decreases in a direction away from the substrate.

[0022] In some embodiments, the isolation structure further includes a third isolation portion, the third isolation portion is disposed between the second isolation portion and the substrate, and an orthographic projection of the second isolation portion on the substrate is located within an orthographic projection of the third isolation portion on the substrate.

[0023] In some embodiments, the display panel further includes a first electrode layer, the first electrode layer includes a first electrode located on a side of each light emitting structure away from the substrate, and the first electrode is electrically connected to the second isolation portion.

[0024] In some embodiments, the first electrode is spaced apart from the light absorbing layer.

[0025] In the second aspect, the display panel provided by the embodiment of the present application includes a substrate, an isolation structure, a light-emitting functional layer and a light-absorbing layer; the light-emitting functional layer is arranged on one side of the substrate, and the light-emitting functional layer includes a plurality of light-emitting structures; the isolation structure is arranged on one side of the substrate, and the isolation structure is arranged around the light-emitting structure, and the isolation structure includes a first isolation portion, and the first isolation portion has a first light reflectivity; the optical layer is arranged on the side of the first isolation portion away from the substrate, and covers at least a portion of the surface of the first isolation portion away from the substrate, and the light reflectivity of the optical layer is less than the first light reflectivity.

[0026] In some embodiments, the first isolation portion has a top surface and a side surface, the top surface is disposed away from the substrate, the side surface is located at a peripheral side of the top surface, and the optical layer covers the top surface.

[0027] In some embodiments, the optical layer covers the top surface and covers at least a portion of the side surface.

[0028] In some embodiments, an orthographic projection of a surface of the optical layer facing the first isolation portion on the substrate coincides with an orthographic projection of the top surface on the substrate.

[0029] In some embodiments, the isolation structure further includes a second isolation portion, which is disposed between the first isolation portion and the substrate, and an orthographic projection of the second isolation portion on the substrate is located within an orthographic projection of the first isolation portion on the substrate.

[0030] In some embodiments, the isolation structure further includes a third isolation portion, the third isolation portion is disposed between the second isolation portion and the substrate, and an orthographic projection of the second isolation portion on the substrate is located within an orthographic projection of the third isolation portion on the substrate.

[0031] In some embodiments, the material of the optical layer includes at least one of titanium nitride and aluminum nitride.

[0032] In some embodiments, the material of the first isolation portion includes titanium.

[0033] In some embodiments, the optical layer has a light reflectivity of no greater than 20%.

[0034] In some embodiments, the difference between the light reflectivity of the optical layer and the first light reflectivity is no less than 15%.

[0035] In some embodiments, the isolation structure includes a plurality of isolation openings, at least a portion of each light emitting structure is located in a corresponding isolation opening, and the display panel further includes:

[0036] The first encapsulation layer includes a plurality of first encapsulation parts, each of which is located at a side of the corresponding light emitting structure away from the substrate and extends to a side of the optical layer away from the substrate via the isolation structure.

[0037] In some embodiments, a distance is provided between the first encapsulation portion and a side of the optical layer facing away from the substrate.

[0038] In some embodiments, the display panel further includes a second encapsulation layer, which is disposed on a side of the first encapsulation layer and the optical layer facing away from the substrate, and the second encapsulation layer is in contact with at least a portion of a side of the optical layer facing away from the substrate.

[0039] In some embodiments, the material of the first encapsulation layer includes an inorganic material, and the material of the second encapsulation layer includes an organic material.

[0040] In some embodiments, the surface of the optical layer on a side facing away from the substrate is roughened.

[0041] In a third aspect, the display device provided in an embodiment of the present application includes the display panel provided in any of the above embodiments.

[0042] In the display panel and display device provided in the embodiments of the present application, an optical layer is set. The optical layer can be, for example, a light absorbing layer. The optical layer covers at least a portion of the surface of the first isolation portion in the isolation structure that is away from the substrate, and the light reflectivity of the optical layer is less than the first light reflectivity of the first isolation portion. This can reduce the reflection of ambient light by the first isolation portion, thereby reducing the interference of ambient light on the normal display of the display panel, which is beneficial to improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features.

[0044] Figure 1 is a schematic diagram of a top view structure of a display panel provided in an embodiment of the present application;

[0045] Figure 2 yes Figure 1 A schematic diagram of a cross-sectional structure along AA;

[0046] Figure 3 yes Figure 1 Another schematic diagram of the cross-sectional structure along AA;

[0047] Figure 4 yes Figure 1 Another schematic cross-sectional view along AA;

[0048] Figure 5 yes Figure 1 Another schematic cross-sectional view along AA;

[0049] Figure 6 It is a schematic diagram of the structure of the display device provided in an embodiment of the present application.

[0050] In the drawings, the figures are not necessarily drawn to scale.

[0051] Description of reference numerals:

[0052] 100. Display panel;

[0053] 110, isolation structure; 110a, isolation opening; 111, first isolation portion; 111a, top surface; 111b, side surface; 112, second isolation portion; 113, third isolation portion;

[0054] 120, light-emitting functional layer; 121, light-emitting structure; 122, pixel definition layer; 1221, pixel defining portion; 122a, pixel opening;

[0055] 130, light absorbing layer; 130a, first surface; 130b, second surface; 130c, third surface;

[0056] 140, a second encapsulation layer;

[0057] 150. first electrode layer; 151. first electrode;

[0058] 160. Substrate;

[0059] 10. Display device. DETAILED DESCRIPTION

[0060] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0061] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating directions or positional relationships, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0062] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0063] In addition, unless explicitly described to the contrary, the word “comprise” will be understood to imply the inclusion of stated elements but not the exclusion of any other elements.

[0064] In the related art, an isolation structure can be set in the OLED display panel, and the isolation structure is used to separate the light-emitting structures of different colors. However, the material on the side of the isolation structure close to the display surface usually includes metal, so that the side of the isolation structure close to the display surface has a higher light reflectivity. After the external ambient light is irradiated to the isolation structure, it is reflected by the side of the isolation structure close to the display surface and then emitted to the light emitting surface together with the light emitted by the display panel. In this way, the ambient light reflected by the isolation structure will cause certain interference to the normal display of the display panel, affecting the display effect of the display panel.

[0065] In view of this, if Figure 1 and Figure 2 As shown, the display panel 100 provided according to the embodiment of the present application includes a substrate 160, an isolation structure 110, a light-emitting functional layer 120 and a light-absorbing layer 130. The light-emitting functional layer 120 is arranged on one side of the substrate 160, and the light-emitting functional layer 120 includes a plurality of light-emitting structures 121. The isolation structure 110 is arranged on one side of the substrate 160, and the isolation structure 110 is arranged around the light-emitting structure 121. The isolation structure 110 includes a first isolation portion 111, and the first isolation portion 111 has a first light reflectivity. The light-absorbing layer 130 is arranged on a side of the first isolation portion 111 away from the substrate 160, and covers at least a portion of the surface of the first isolation portion 111 away from the substrate 160. The light-absorbing layer 130 has a second light reflectivity, and the second light reflectivity is less than the first light reflectivity.

[0066] The substrate 160 mainly plays a supporting role, and other film layers are stacked on the substrate 160 in sequence. The stacking arrangement mentioned here means that the other film layers are arranged in sequence along the thickness direction of the substrate 160. Among them, a variety of film layer structures can be arranged in the substrate 160, and the specific film layer structure composition of the substrate 160 is not limited in the embodiment of the present application. For example, a pixel driving circuit for driving the light-emitting functional layer 120 of the display panel 100 to emit light can be arranged inside the substrate 160.

[0067] The isolation structure 110 and the light-emitting functional layer 120 are located on the same side of the substrate 160. The light-emitting functional layer 120 includes a plurality of light-emitting structures 121, and the plurality of light-emitting structures 121 are arranged at intervals. In some embodiments, the isolation structure is located between two adjacent light-emitting structures 121, and the light-emitting structures 121 of the same color and different colors are separated by the isolation structure 110. In other embodiments, the isolation structure 110 may also be located only between light-emitting structures 121 of different colors, that is, the light-emitting structures 121 of the same color are not separated by the isolation structure 110. The embodiment of the present application does not limit the size and shape of the isolation structure 110. Exemplarily, the positive projection of the isolation structure 110 on the substrate 160 is a mesh structure.

[0068] The light-emitting functional layer 120 includes a plurality of light-emitting structures 121, including but not limited to a red light-emitting structure for emitting red light, a green light-emitting structure for emitting green light, and a blue light-emitting structure for emitting blue light. Each light-emitting structure 121 may include a stacked hole injection layer (HOL), a hole transport layer (HTL), a light-emitting layer, an electron injection layer (EIL), and an electron transport layer (ETL).

[0069] The isolation structure 110 includes a first isolation portion 111 . The first isolation portion 111 may be made of a metal material. The first light reflectivity of the first isolation portion 111 is relatively high, and ambient light is easily reflected after being irradiated to the first isolation portion 111 .

[0070] The light absorbing layer 130 is arranged on the side of the first isolation portion 111 away from the substrate 160, and covers at least a portion of the surface of the first isolation portion 111 away from the substrate 160. Therefore, the light absorbing layer 130 can absorb at least a portion of the ambient light irradiated toward the display panel 100, thereby achieving the purpose of reducing the reflection of the ambient light by the first isolation portion 111.

[0071] Optionally, the light absorbing layer 130 may cover the entire surface of the first isolating portion 111 on the side facing away from the substrate 160, or the light absorbing layer 130 may cover a portion of the surface of the first isolating portion 111 on the side facing away from the substrate 160. The light absorbing layer 130 may be made of a black insulating material to ensure that the light absorbing layer 130 has a second light reflectivity lower than the first light reflectivity.

[0072] Optionally, the isolation structure 110 can be directly prepared on the substrate 160, and the first isolation portion 111 can be arranged around the light-emitting structure 121. Alternatively, the light-emitting structure layer 120 can also include a pixel definition layer 122, the pixel definition layer 122 includes a pixel definition portion 1221 and a pixel opening 122a formed by the pixel definition portion 1221, and at least part of each light-emitting structure 121 is arranged in the pixel opening 122a. The isolation structure 110 is arranged on the side of the pixel definition portion 1221 away from the substrate 160, the isolation structure 110 has an isolation opening 110a, the first isolation portion 111 is arranged around one or more pixel openings 122a, and the orthographic projection of the isolation opening 110a on the substrate 160 covers the orthographic projection of the light-emitting structure 121 on the substrate 160.

[0073] When the isolation structures 110 are distributed in a mesh shape, the light absorption layer 130 is also distributed in a mesh shape, so that the isolation openings 110 a pass through the light absorption layer 130 .

[0074] The display panel 100 provided in the embodiment of the present application can reduce the reflection of ambient light by the first isolation portion 111, thereby reducing the interference of ambient light on the normal display of the display panel 100, and is beneficial to improving the display effect of the display panel 100, by setting a light absorbing layer 130 to cover at least a portion of the surface of the first isolation portion 111 facing away from the substrate 160, and setting the second light reflectivity of the light absorbing layer 130 to be less than the first light reflectivity of the first isolation portion 111.

[0075] like Figure 1 and Figure 2 As shown, in some embodiments, the first isolation portion 111 has a top surface 111a and a side surface 111b, the top surface 111a is disposed away from the substrate 160, the side surface 111b is located around the top surface 111a, and the light absorption layer 130 covers the top surface 111a.

[0076] The light absorbing layer 130 covers the top surface 111a. Optionally, in some embodiments, the light absorbing layer 130 may cover a portion of the top surface 111a. In other embodiments, such as Figure 2As shown, the light absorption layer 130 may also cover the entire top surface 111a. In this way, the light absorption layer 130 may absorb at least part of the ambient light irradiated to the top surface 111a of the first isolation portion 111, so as to reduce the reflection of the ambient light by the top surface 111a of the first isolation portion 111, thereby reducing the influence of the ambient light on the normal display of the display panel 100, which is conducive to further improving the display effect of the display panel 100.

[0077] like Figure 1 and Figure 3 As shown, in some embodiments, the light absorbing layer 130 covers the top surface 111 a and at least a portion of the side surface 111 b .

[0078] Alternatively, the light absorption layer 130 may cover the entire top surface 111 a and a portion of the side surface 111 b , or the light absorption layer 130 may cover the entire top surface 111 a and the entire side surface 111 b .

[0079] In this way, the light absorbing layer 130 can absorb the ambient light irradiated to the top surface 111a and at least part of the side surface 111b of the first isolation portion 111, which can not only reduce the reflection of the ambient light by the top surface 111a of the first isolation portion 111, but also reduce the reflection of the ambient light by the side surface 111b of the first isolation portion 111, which is beneficial to further reduce the influence of ambient light on the normal display of the display panel 100, and is beneficial to further improve the display effect of the display panel 100.

[0080] In some embodiments, the material of the light absorbing layer 130 includes an organic material, and specifically, the material of the light absorbing layer 130 includes a black organic glue. Further, when the material of the first isolation portion 111 includes a metal material, after the first isolation portion 111 and the light absorbing layer 130 are prepared, the adhesion between the first isolation portion 111 and the light absorbing layer 130 can be increased by a baking process, or the surface of the first isolation portion 111 in contact with the light absorbing layer 130 can be treated to make the surface rough, thereby increasing the adhesion between the first isolation portion 111 and the light absorbing layer 130. Further, in this embodiment, the first isolation portion 111 can be prepared by a sputtering process, and the light absorbing layer 130 can be prepared by a coating process.

[0081] The black organic glue has a low light reflectivity, which is beneficial to reduce the intensity of the ambient light irradiated to the first isolation portion 111. The organic material and the first isolation portion 111 have a good bonding effect. Thus, after the display panel 100 is prepared, the light absorption layer 130 and the first isolation portion 111 have a high bonding strength, which is beneficial to improve the structural strength and reliability of the display panel 100.

[0082] In some embodiments, the material of the light absorbing layer 130 includes at least one of polyvinyl chloride resin, polyimide and polypropylene. In this way, the material of the light absorbing layer 130 is easy to obtain and the preparation of the light absorbing layer 130 is convenient, which is conducive to simplifying the preparation process of the light absorbing layer 130 and reducing the production cost of the display panel 100.

[0083] like Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, the light absorbing layer 130 has a first surface 130a, a second surface 130b and a third surface 130c, the first surface 130a is disposed away from the substrate 160, the second surface 130b is disposed toward the substrate 160, and the third surface 130c connects the first surface 130a and the second surface 130b. The orthographic projection of the first surface 130a on the substrate 160 is located within the orthographic projection of the second surface 130b on the substrate 160.

[0084] In some embodiments, Figure 1 , Figure 2 and Figure 4 As shown, the isolation structure 110 includes a plurality of isolation openings 110a, and at least a portion of each light emitting structure 121 is located in the corresponding isolation opening 110a. The display panel 100 further includes:

[0085] The first encapsulation layer (not shown in the figure) includes a plurality of first encapsulation parts, each of which is located on a side of the corresponding light emitting structure 121 away from the substrate 160 and extends to a side of the light absorbing layer 130 away from the substrate via the isolation structure 110 .

[0086] It should be noted that the following patent applications PCT / CN2023 / 134518, 202310759370.2, 202310740412.8, 202310707209.0, and 202311346196.5 record the relevant technical solutions of the first encapsulation layer and the isolation structure 110, and their contents are incorporated into this application by reference for reference.

[0087] In some embodiments, a distance is provided between the first encapsulation portion and the first surface 130 a .

[0088] In some embodiments, Figure 1 , Figure 2 and Figure 4 As shown, the display panel 100 further includes a second encapsulation layer 140 . The second encapsulation layer 140 is disposed on a side of the light absorption layer 130 away from the substrate 160 . The second encapsulation layer 140 is in contact with at least a portion of the first surface 130 a .

[0089] It should be understood that after the light absorbing layer 130 , the light emitting functional layer 120 , the cathode and other structures are prepared, it is necessary to prepare a second encapsulation layer 140 on the light absorbing layer 130 to achieve encapsulation of the display panel 100 .

[0090] In some embodiments, the orthographic projection of the first surface 130a of the light absorbing layer 130 on the substrate 160 may be arranged to be within the orthographic projection of the second surface 130b on the substrate 160, that is, in the direction from the second surface 130b to the first surface 130a, the cross-sectional area of ​​the light absorbing layer 130 gradually decreases, which is beneficial to increasing the bonding area between the light absorbing layer 130 and the second encapsulation layer 140 in the subsequent process of preparing the second encapsulation layer 140, thereby increasing the bonding strength between the second encapsulation layer 140 and the light absorbing layer 130, and after the preparation of the second encapsulation layer 140 is completed, it is beneficial to improve the packaging reliability of the display panel 100. In addition, the second surface 130b and the third surface 130c intersect, and the directions of the bonding forces of the second encapsulation layer 140, the second surface 130b and the third surface 130c intersect, respectively, which is beneficial to further increase the bonding strength between the light absorbing layer 130 and the second encapsulation layer 140, thereby improving the packaging reliability of the display panel 100. In addition, the second surface 130b and the third surface 130c intersect, and the directions of the bonding forces of the second encapsulation layer 140, the second surface 130b and the third surface 130c intersect, respectively, which is beneficial to further increase the bonding strength between the light absorbing layer 130 and the second encapsulation layer 140, thereby improving the packaging reliability of the display panel 100.

[0091] Please continue reading Figure 1 and Figure 2 In some embodiments, the cross-sectional area of ​​the light absorbing layer 130 gradually decreases in the direction from the second surface 130 b to the first surface 130 a .

[0092] In this way, the cross-section of the light absorbing layer 130 gradually changes along the direction from the second surface 130b to the first surface 130a. This facilitates the simplification of the preparation process of the light absorbing layer 130 and helps to increase the surface area between the first surface 130a and the second surface 130b of the light absorbing layer 130. In the subsequent process of preparing the second encapsulation layer 140, it helps to further increase the bonding area between the light absorbing layer 130 and the second encapsulation layer 140, thereby increasing the bonding strength between the light absorbing layer 130 and the second encapsulation layer 140, which helps to improve the packaging reliability of the display panel 100.

[0093] In some embodiments, the material of the first encapsulation layer includes an inorganic material, the material of the second encapsulation layer 140 includes an organic material, and further, the material of the light absorption layer 130 includes an organic material. Since the inorganic material and the organic material have good adhesion, such a material selection method is conducive to improving the reliability of the display panel 100 during packaging. Further, in this embodiment, the first encapsulation layer can be prepared by a vapor deposition process.

[0094] In some embodiments, the materials of the light absorbing layer 130 and the second encapsulation layer 140 both include inorganic materials. Since inorganic materials have good adhesion to each other, such a material selection method is conducive to improving the reliability of the display panel 100 during encapsulation. Further, in such an embodiment, when the light absorbing layer 130 is prepared by using a vapor deposition process, a black substance can be introduced into the gas so that the prepared light absorbing layer 130 has a second light reflectivity lower than the first light reflectivity of the first isolation portion 111, or the light absorbing layer 130 can be prepared by using an inorganic material with a certain light absorption property.

[0095] like Figure 1 and Figure 2 As shown, in some embodiments, the thickness h of the light absorption layer 130 satisfies the following relationship: 0<h≤0.5 μm, that is, the thickness h of the light absorption layer 130 is not greater than 0.5 micrometers.

[0096] Optionally, h may be 0.1 μm, 0.2 μm, 0.3 μm, 0.4 μm or 0.5 μm, etc.

[0097] After systematic analysis and long-term practice, the inventors found that setting the thickness h of the light absorbing layer 130 to satisfy the relationship “0<h≤0.5μm” can make the thickness of the light absorbing layer 130 lower while ensuring that the light absorbing layer 130 has a lower second light reflectivity, thereby reducing the thickness of the display panel 100.

[0098] In some embodiments, the isolation structure may include only a first isolation portion having a bottom surface (not shown) opposite to the top surface, and a cross-sectional area of ​​the first isolation portion gradually decreases in a direction from the top surface to the bottom surface.

[0099] like Figures 1 to 4 As shown, in some embodiments, in addition to the first isolation portion 111, the isolation structure 110 may also include a second isolation portion 112, and the second isolation portion 112 is arranged between the first isolation portion 111 and the substrate 160, and the orthographic projection of the second isolation portion 112 on the substrate 160 is located within the orthographic projection of the first isolation portion 111 on the substrate 160.

[0100] The isolation structure 110 includes a second isolation portion 112 and a first isolation portion 111. The specific sizes of the second isolation portion 112 and the first isolation portion 111 are not limited in the present embodiment. For example, the orthographic projections of the second isolation portion 112 and the first isolation portion 111 on the substrate 160 are both mesh structures.

[0101] During the preparation of the display panel 100, due to the presence of the isolation structure 110, different light-emitting structures 121 are spaced apart. Specifically, during the preparation of the display panel 100, the isolation structure 110 and the isolation opening 110a are usually formed first, and then the light-emitting structure 121 is directly evaporated without the aid of a mask. In this process, due to the presence of the isolation structure 110, part of the light-emitting material will be evaporated in the isolation opening 110a, and part of the light-emitting material will be evaporated on the side of the isolation structure 110 away from the substrate 160, so that the light-emitting materials on different sides of the isolation structure 110 parallel to the plane direction of the substrate 160 are discontinuous, and the light-emitting structures 121 are separated from each other without the need for a mask. Since the evaporation of the light-emitting structure 121 does not require a precision mask, the cost is reduced, and the shadow effect of the light-emitting layer evaporated by the precision mask is avoided, and the spacing between sub-pixels can be reduced, thereby improving the brightness of the display panel 100. Furthermore, since the electron transport layer, electron injection layer, hole transport layer, hole injection layer, etc. of the light emitting structure 121 are isolated by the isolation structure 110 , crosstalk between sub-pixels can be prevented, thereby improving the display effect of the display panel 100 .

[0102] Therefore, since the orthographic projection of the second isolating portion 112 on the substrate 160 is located within the orthographic projection of the first isolating portion 111 on the substrate 160, that is, the first isolating portion 111 is at least partially arranged beyond the second isolating portion 112 in a direction parallel to the plane where the substrate 160 is located. This design helps to separate the light-emitting material falling into the isolation opening 110a from the light-emitting material located on the side of the first isolating portion 111 away from the substrate 160 during the preparation process of the light-emitting structure 121, thereby meeting the preparation requirements of the light-emitting structure 121.

[0103] Please continue reading Figures 1 to 4 In some embodiments, the cross-section of the second isolation portion 112 gradually decreases in a direction away from the substrate 160 .

[0104] In this way, during the process of evaporating the relevant film layers of the light emitting structure 121 , it has a better bonding area and bonding strength with the second isolation portion 112 , which is beneficial to further improve the structural stability of the display panel 100 .

[0105] like Figure 1 and Figure 5 As shown, in some embodiments, the isolation structure 110 also includes a third isolation portion 113, which is disposed between the second isolation portion 112 and the substrate 160, and the orthographic projection of the second isolation portion 112 on the substrate 160 is located within the orthographic projection of the third isolation portion 113 on the substrate 160.

[0106] Optionally, the material of the first isolation portion 111 may include titanium, the material of the second isolation portion 112 may include aluminum, and the material of the third isolation portion 113 may include titanium or molybdenum.

[0107] The specific size of the second isolation portion 112 and the third isolation portion 113 is not limited in the embodiment of the present application. Exemplarily, the orthographic projections of the second isolation portion 112 and the third isolation portion 113 on the substrate 160 are both in a mesh structure.

[0108] Since the orthographic projection of the second isolation portion 112 on the substrate 160 is located within the orthographic projection of the third isolation portion 113 on the substrate 160 , that is, the third isolation portion 113 is at least partially disposed beyond the second isolation portion 112 in a direction parallel to the plane of the substrate 160 .

[0109] It should be understood that after the light emitting structure 121 is prepared, it is usually necessary to evaporate the first electrode layer 150 on the side of the light emitting structure 121 away from the substrate 160. The first electrode layer 150 includes a plurality of first electrodes 151. The first electrodes 151 are located in the isolation opening 110a, and the orthographic projection of the first electrodes 151 on the substrate 160 can be in a mesh shape. It is usually necessary to realize the electrical connection of the first electrodes 151 in adjacent isolation openings 110a through the third isolation portion 113, so that the first electrode 151 needs to overlap the third isolation portion 113.

[0110] Therefore, setting the orthographic projection of the second isolation portion 112 on the substrate 160 to be within the orthographic projection of the third isolation portion 113 on the substrate 160 can make it easier for the third isolation portion 113 to overlap with the first electrode 151, so that during the preparation process of the display panel 100, the evaporation of the first electrode 151 does not need to be restricted by the limitation of the evaporation angle, and even when preparing sub-pixels of different colors, since the light-emitting structure 121 needs to be etched multiple times, resulting in part of the second isolation portion 112 being etched, it will not affect the electrical connection between the isolation structure 110 and the first electrode layer 150, which is beneficial to improving the performance and product yield of the display panel 100.

[0111] like Figure 1 , Figure 4 and Figure 5 As shown, in some embodiments, the display panel 100 further includes a first electrode layer 150 , the first electrode layer 150 includes a first electrode 151 located on a side of each light emitting structure 121 away from the substrate 160 , and the first electrode 151 is electrically connected to the second isolation portion 112 .

[0112] In this way, electrical connection of different first electrodes 151 can be achieved through the second isolation portion 112 , which facilitates modular control of the first electrodes 151 and helps to simplify the connection lines within the display panel 100 and the control logic of the display panel 100 .

[0113] like Figure 1 and Figure 5 As shown, in some embodiments, the first electrode 151 and the light absorbing layer 130 are spaced apart from each other.

[0114] In this way, the possibility of the light absorption layer 130 insulating adjacent first electrodes 151 is reduced, thereby improving the reliability of the electrical connection between different first electrodes 151 , which is beneficial to improving the display reliability of the display panel 100 .

[0115] like Figure 6 As shown, the display device 10 provided according to an embodiment of the present application includes the display panel 100 provided by any of the above embodiments.

[0116] The display device 10 in the embodiment of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles and other devices with display functions.

[0117] Furthermore, another embodiment of the present application also provides a display panel, which includes a substrate, an isolation structure, a light-emitting functional layer and an optical layer. The light-emitting functional layer is arranged on one side of the substrate, and the light-emitting functional layer includes a plurality of light-emitting structures. The isolation structure is arranged on one side of the substrate, and the isolation structure is arranged around the light-emitting structure. The isolation structure includes a first isolation portion, and the first isolation portion has a first light reflectivity. The optical layer is arranged on a side of the first isolation portion away from the substrate, and covers at least a portion of the surface of the first isolation portion away from the substrate, and the light reflectivity of the optical layer is less than the first light reflectivity.

[0118] It should be noted that the structure, material and location of the substrate, isolation structure and light-emitting functional layer in this embodiment are the same as those of the substrate 160, isolation structure 110 and light-emitting functional layer 120 in the above-mentioned embodiment. The structure and location of the optical layer in this embodiment are the same as those of the light-absorbing layer 130 in the above-mentioned embodiment. The structure and location relationship of each film layer structure in this embodiment can be referred to Figures 1 to 5 .

[0119] Different from the embodiments described above, in this embodiment, the material of the optical layer includes at least one of titanium nitride (chemical formula: TixNy) and aluminum nitride (chemical formula: AlxNy). When the above materials are selected, the optical layer can be prepared by chemical vapor deposition (CVD).

[0120] Specifically, in this embodiment, the material of the first isolation portion includes titanium (chemical formula: Ti).

[0121] In some embodiments, the light reflectivity of the optical layer is not greater than 20%. Further, the difference between the light reflectivity of the optical layer and the first light reflectivity is not less than 15%.

[0122] For example, in some embodiments, the material of the optical layer includes titanium nitride, the light reflectivity of titanium nitride is not greater than 20%, the material of the first isolation portion includes titanium, the light reflectivity of titanium is about 35%, and the light reflectivity of the optical layer is about 15% lower than the light reflectivity of the first isolation portion.

[0123] In some embodiments, the surface of the optical layer on a side facing away from the substrate is rough.

[0124] For reference Figure 1 and Figure 2 As shown, in some implementations of this embodiment, the first isolation portion has a top surface and a side surface, the top surface is arranged away from the substrate, the side surface is located on the peripheral side of the top surface, and the optical layer covers the top surface.

[0125] Specifically, the optical layer covers the top surface, then optionally, in some embodiments, the optical layer may cover a portion of the top surface; in other embodiments, referring to Figure 2 As shown, the optical layer may also cover the entire top surface. In this way, the optical layer can reduce the reflection of ambient light by the top surface of the first isolation portion, thereby reducing the influence of ambient light on the normal display of the display panel, which is beneficial to further improve the display effect of the display panel, such as improving the display contrast of the display panel.

[0126] For reference Figure 1 and Figure 3 As shown, in some implementations of this embodiment, the optical layer covers the top surface and at least a portion of the side surface.

[0127] Specifically, the optical layer may cover the entire top surface and a portion of the side surface, or the optical layer may cover the entire top surface and the entire side surface.

[0128] In this way, the optical layer can also reduce the reflection of ambient light by the side surface of the first isolation portion, which is beneficial to further reduce the impact of ambient light on the normal display of the display panel and to further improve the display effect of the display panel, such as improving the display contrast of the display panel.

[0129] Further, please refer to Figure 2 As shown, in some implementations of this embodiment, the orthographic projection of the surface of the optical layer facing the first isolation portion on the substrate coincides with the orthographic projection of the top surface on the substrate.

[0130] For reference Figures 1 to 4As shown, in some implementations of this embodiment, in addition to the first isolation portion, the isolation structure may also include a second isolation portion, the second isolation portion is arranged between the first isolation portion and the substrate, and the orthographic projection of the second isolation portion on the substrate is located within the orthographic projection of the first isolation portion on the substrate.

[0131] It should be noted that the present embodiment does not limit the specific sizes of the second isolation portion and the first isolation portion. By way of example, the orthographic projections of the second isolation portion and the first isolation portion on the substrate may both be mesh structures.

[0132] For reference Figure 1 and Figure 5 As shown, in some implementations of this embodiment, the isolation structure also includes a third isolation portion, which is arranged between the second isolation portion and the substrate, and the orthographic projection of the second isolation portion on the substrate is located within the orthographic projection of the third isolation portion on the substrate.

[0133] Optionally, the material of the first isolation portion may include titanium, the material of the second isolation portion may include aluminum, and the material of the third isolation portion may include titanium or molybdenum.

[0134] It should be noted that the present embodiment does not limit the specific size of the second isolation portion and the third isolation portion. For example, the orthographic projections of the second isolation portion and the third isolation portion on the substrate may both be mesh structures. Further, in some embodiments, the isolation structure includes a plurality of isolation openings, at least a portion of each light-emitting structure is located in the corresponding isolation opening, and the display panel further includes:

[0135] The first encapsulation layer includes a plurality of first encapsulation parts, each of which is located at a side of the corresponding light emitting structure away from the substrate and extends to a side of the optical layer away from the substrate via the isolation structure.

[0136] In some embodiments, a distance is provided between the first encapsulation portion and a side of the optical layer facing away from the substrate.

[0137] In some embodiments, the display panel further includes a second encapsulation layer, which is disposed on a side of the first encapsulation layer and the optical layer facing away from the substrate, and the second encapsulation layer is in contact with at least a portion of a side of the optical layer facing away from the substrate.

[0138] In some embodiments, the material of the first encapsulation layer includes an inorganic material, and the material of the second encapsulation layer includes an organic material.

[0139] Since the display device 10 provided in the embodiment of the present application includes the display panel 100 of any of the above embodiments, the display device 10 provided in the embodiment of the present application has the same beneficial effects, which will not be described in detail herein.

[0140] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display panel, characterized in that: include: substrate; A light-emitting functional layer is provided on one side of the substrate, and the light-emitting functional layer includes a plurality of light-emitting structures; An isolation structure, disposed on one side of the substrate, the isolation structure is disposed around the light emitting structure, the isolation structure comprises a first isolation portion, and the first isolation portion has a first light reflectivity; The light absorbing layer is arranged on the side of the first isolation portion away from the substrate and covers at least a portion of the surface of the first isolation portion away from the substrate. The light absorbing layer has a second light reflectivity that is less than the first light reflectivity.

2. The display panel according to claim 1, characterized in that: The first isolation portion has a top surface and a side surface, the top surface is arranged away from the substrate, the side surface is located at a peripheral side of the top surface, and the light absorption layer covers the top surface.

3. The display panel according to claim 2, characterized in that: The light absorbing layer covers the top surface and at least a portion of the side surface.

4. The display panel according to claim 1, characterized in that: The material of the light absorbing layer includes organic material; Preferably, the material of the light absorbing layer includes black organic glue, and the black organic glue includes at least one of polyvinyl chloride resin, polyimide and polypropylene; Preferably, the surface of the first isolation portion in contact with the light absorbing layer is rough.

5. The display panel according to claim 1, characterized in that: The light absorbing layer comprises a first surface, a second surface and a third surface, wherein the first surface is arranged to face away from the substrate, the second surface is arranged to face the substrate, the third surface connects the first surface and the second surface, and the orthographic projection of the first surface on the substrate is located within the orthographic projection of the second surface on the substrate; Preferably, the isolation structure includes a plurality of isolation openings, and at least a portion of each of the light emitting structures is located in the corresponding isolation opening. The display panel further includes: a first encapsulation layer, the first encapsulation layer comprising a plurality of first encapsulation portions, each of the first encapsulation portions being located on a side of the corresponding light emitting structure away from the substrate, and extending to a side of the light absorbing layer away from the substrate via the isolation structure; Preferably, there is a distance between the first encapsulation part and the first surface; preferably, the display panel further comprises a second encapsulation layer, the second encapsulation layer is arranged on a side of the first encapsulation layer and the light absorbing layer away from the substrate, and the second encapsulation layer is in contact with at least a portion of the first surface; Preferably, along the direction from the second surface to the first surface, the cross-sectional area of ​​the light absorbing layer gradually decreases; Preferably, the material of the first encapsulation layer includes an inorganic material, and the material of the second encapsulation layer includes an organic material; Preferably, the light absorbing layer and the first encapsulation layer are both made of inorganic materials.

6. The display panel according to claim 1, characterized in that: The thickness of the light absorbing layer is not greater than 0.5 μm.

7. The display panel according to claim 1, characterized in that: The isolation structure further includes a second isolation portion, the second isolation portion is disposed between the first isolation portion and the substrate, and the orthographic projection of the second isolation portion on the substrate is located within the orthographic projection of the first isolation portion on the substrate; Preferably, in a direction away from the substrate, a cross section of the second isolation portion gradually decreases.

8. The display panel according to claim 7, characterized in that: The isolation structure further includes a third isolation portion, which is disposed between the second isolation portion and the substrate, and an orthographic projection of the second isolation portion on the substrate is located within an orthographic projection of the third isolation portion on the substrate.

9. The display panel according to claim 7, characterized in that: The display panel further includes a first electrode layer, the first electrode layer includes a first electrode located on a side of each of the light emitting structures away from the substrate, and the first electrode is electrically connected to the second isolation portion; Preferably, the first electrode and the light absorbing layer are spaced apart from each other.

10. A display panel, characterized in that: include: substrate; A light-emitting functional layer is provided on one side of the substrate, and the light-emitting functional layer includes a plurality of light-emitting structures; An isolation structure, disposed on one side of the substrate, the isolation structure is disposed around the light emitting structure, the isolation structure comprises a first isolation portion, and the first isolation portion has a first light reflectivity; The optical layer is disposed on a side of the first isolation portion away from the substrate and covers at least a portion of a surface of the first isolation portion away from the substrate. The optical layer has a light reflectivity lower than the first light reflectivity.

11. The display panel according to claim 10, characterized in that: The first isolation portion has a top surface and a side surface, the top surface is arranged away from the substrate, the side surface is located at a peripheral side of the top surface, and the optical layer covers the top surface; Preferably, the optical layer covers the top surface and at least a portion of the side surface; Preferably, the orthographic projection of the surface of the optical layer facing the first isolation portion on the substrate coincides with the orthographic projection of the top surface on the substrate; Preferably, the isolation structure further comprises a second isolation portion, the second isolation portion is arranged between the first isolation portion and the substrate, and the orthographic projection of the second isolation portion on the substrate is located within the orthographic projection of the first isolation portion on the substrate; Preferably, the isolation structure further includes a third isolation portion, wherein the third isolation portion is disposed between the second isolation portion and the substrate, and an orthographic projection of the second isolation portion on the substrate is located within an orthographic projection of the third isolation portion on the substrate.

12. The display panel according to claim 10, characterized in that: The material of the optical layer includes at least one of titanium nitride and aluminum nitride; Preferably, the material of the first isolation portion includes titanium.

13. The display panel according to claim 10, characterized in that: The optical layer has a light reflectivity of no more than 20%.

14. The display panel according to claim 10, characterized in that: A difference between the light reflectivity of the optical layer and the first light reflectivity is not less than 15%.

15. The display panel according to claim 10, characterized in that: The isolation structure includes a plurality of isolation openings, at least a portion of each of the light emitting structures is located in the corresponding isolation opening, and the display panel further includes: a first encapsulation layer, the first encapsulation layer comprising a plurality of first encapsulation parts, each of the first encapsulation parts being located at a side of the corresponding light emitting structure away from the substrate, and extending to a side of the optical layer away from the substrate via the isolation structure; Preferably, there is a distance between the first encapsulation portion and a side of the optical layer facing away from the substrate; Preferably, the display panel further comprises a second encapsulation layer, the second encapsulation layer is arranged on a side of the first encapsulation layer and the optical layer away from the substrate, and the second encapsulation layer is in contact with at least a portion of a side of the optical layer away from the substrate; Preferably, the material of the first encapsulation layer includes an inorganic material, and the material of the second encapsulation layer includes an organic material.

16. The display panel according to claim 10, characterized in that: The surface of the optical layer facing away from the substrate is rough.

17. A display device, characterized in that: A display panel comprising any one of claims 1 to 16.

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