Display panel packaging structure and display device

Abstract

The utility model discloses a display panel packaging structure and a display device. The display panel packaging structure comprises a substrate, a light-emitting layer and a packaging layer, the light-emitting layer is arranged on the surface of one side of the substrate; the light-emitting layer comprises a plurality of pixel units arranged in an array, and each pixel unit comprises a plurality of light-emitting sub-pixels; the packaging layer is arranged on the side, away from the substrate, of the light-emitting layer; wherein the packaging layer comprises a light extraction layer, the light extraction layer comprises a plurality of light extraction parts, and each light extraction part is arranged corresponding to at least one light-emitting sub-pixel which is continuously arranged. The technical scheme provided by the embodiment of the utility model is beneficial to improving the light extraction property of the display panel.

Description

Technical Field

[0001] The utility model relates to the field of display technology, and in particular to a display panel packaging structure and a display device. Background Art

[0002] Organic Light-Emitting Diode (OLED) has the advantages of low power consumption, wide viewing angle and fast response speed, and is widely used in portable electronic devices, wearable electronic devices and automotive electronic devices.

[0003] Due to the intrusion of moisture and oxygen into OLEDs, dark spots appear in them, significantly impacting their lifespan and luminous performance. Therefore, effective OLED packaging is essential. While the internal quantum efficiency of OLEDs can approach 100%, in active-matrix organic light-emitting diodes (AMOLEDs), light emitted by the light-emitting device must be refracted through layers with different refractive indices, such as the cathode, inorganic film, and organic film, before being emitted to the outside world. This results in significant optical losses. Microlens array (MLA) technology is often used in existing OLED devices to minimize the optical waveguide effect and reduce total internal reflection of light, thereby improving light extraction from the display. Figure 1 This is a schematic diagram of the cross-sectional structure of an OLED device provided by the prior art. Figure 1 As shown, the MLA structure 01 is disposed on a surface of the encapsulation layer 02 that is away from the light-emitting layer. However, the MLA technology has limited effect on improving the light extraction performance of OLED devices. Utility Model Content

[0004] The utility model provides a display panel packaging structure and a display device, so as to further improve the light extraction performance of the display panel.

[0005] According to one aspect of the present invention, a display panel packaging structure is provided, comprising:

[0006] substrate;

[0007] A light-emitting layer, the light-emitting layer being disposed on a side surface of the substrate; the light-emitting layer comprising a plurality of pixel units arranged in an array, each of the pixel units comprising a plurality of light-emitting sub-pixels;

[0008] an encapsulation layer, the encapsulation layer being disposed on a side of the light-emitting layer away from the substrate;

[0009] The encapsulation layer includes a light extraction layer, and the light extraction layer includes a plurality of light extraction portions, each of which is arranged corresponding to at least one of the continuously arranged light-emitting sub-pixels.

[0010] Optionally, the light-emitting sub-pixels include red light-emitting sub-pixels, green light-emitting sub-pixels and blue light-emitting sub-pixels;

[0011] Each of the light extraction portions is disposed in one-to-one correspondence with each of the red light-emitting sub-pixels, each of the green light-emitting sub-pixels, and each of the blue light-emitting sub-pixels.

[0012] Optionally, the light-emitting sub-pixels include red light-emitting sub-pixels, green light-emitting sub-pixels and blue light-emitting sub-pixels;

[0013] The orthographic projection of each of the light extraction portions on the horizontal plane covers the orthographic projections of at least two consecutively arranged red light-emitting sub-pixels on the horizontal plane;

[0014] Alternatively, the orthographic projection of each of the light extraction portions on the horizontal plane covers the orthographic projection of at least two consecutively arranged green light-emitting sub-pixels on the horizontal plane;

[0015] Alternatively, the orthographic projection of each of the light extraction portions on the horizontal plane covers the orthographic projections of at least two of the continuously arranged blue light-emitting sub-pixels on the horizontal plane.

[0016] Optionally, the orthographic projection of each of the light extraction portions on the horizontal plane covers the orthographic projection of at least two consecutively arranged light-emitting sub-pixels with different light-emitting colors on the horizontal plane.

[0017] Optionally, the orthographic projection of the light extraction portion on the horizontal plane completely covers the orthographic projection of the corresponding light-emitting sub-pixel on the horizontal plane.

[0018] Optionally, the light extraction portion has a preset etching inclination angle; wherein the preset etching inclination angle is the angle between the side surface of the light extraction portion after etching and the horizontal plane;

[0019] The preset etching tilt angle is less than or equal to 90°.

[0020] Optionally, the encapsulation layer further comprises: a first inorganic layer, an organic layer and a second inorganic layer;

[0021] The first inorganic layer is disposed to surround the light emitting layer, and the organic layer is disposed to surround the light extraction layer; and the second inorganic layer is disposed to surround the first inorganic layer and the organic layer.

[0022] Optionally, the orthographic projection of the organic layer on the horizontal plane covers at least a portion of the orthographic projection of the first inorganic layer on the horizontal plane.

[0023] Optionally, the material of the first inorganic layer and the second inorganic layer includes any one of SiNx, SiOx, SiOxNy, AlOx and TiOx;

[0024] The material of the organic layer includes any one of acrylic, epoxy resin and silicone resin.

[0025] According to another aspect of the present invention, a display device is provided, comprising the display panel packaging structure according to any embodiment of the first aspect.

[0026] The display panel packaging structure provided by the embodiment of the present invention has a light-emitting layer including a plurality of pixel units arranged in an array on the surface of one side of the substrate, and the pixel unit includes a plurality of light-emitting sub-pixels. An encapsulation layer is provided on the side of the light-emitting layer away from the substrate, and the encapsulation layer includes a light extraction layer. By arranging the light extraction layer in the encapsulation layer in this way, the distance between the light-emitting layer and the light extraction layer can be reduced, thereby reducing optical loss, which is beneficial to improving the light extraction efficiency of the display panel, and further improving the light extraction performance of the display panel. The light extraction layer includes a plurality of light extraction parts, and each light extraction part is provided corresponding to at least one light-emitting sub-pixel arranged in series. In this way, the size of each light extraction part can be designed according to the size of a single light-emitting sub-pixel, thereby further improving the light extraction performance of the display panel.

[0027] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 This is a schematic diagram of the cross-sectional structure of an OLED device provided by the prior art;

[0030] Figure 2 This is a schematic cross-sectional view of a display panel packaging structure provided according to an embodiment of the present invention;

[0031] Figure 3 This is a top view schematic diagram of a configuration of a light extraction portion provided in an embodiment of the present utility model;

[0032] Figure 4 This is a top view schematic diagram of another arrangement of a light extraction portion provided according to an embodiment of the present utility model;

[0033] Figure 5 This is a top view schematic diagram of another arrangement of a light extraction portion provided according to an embodiment of the present utility model;

[0034] Figure 6 is a schematic cross-sectional view of another display panel packaging structure provided according to an embodiment of the present utility model;

[0035] Figure 7 is a schematic cross-sectional view of another display panel packaging structure provided according to an embodiment of the present utility model;

[0036] Figure 8 It is a structural schematic diagram of a display device provided according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0037] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0038] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0039] An embodiment of the utility model provides a display panel packaging structure. Figure 2 This is a schematic cross-sectional view of a display panel packaging structure provided by an embodiment of the present invention. Figure 2 As shown, the display panel packaging structure includes: a substrate 10 , a light emitting layer 20 and an encapsulation layer 30 .

[0040] The light-emitting layer 20 is arranged on one side surface of the substrate 10; the light-emitting layer 20 includes a plurality of pixel units 21 arranged in an array, and each pixel unit 21 includes a plurality of light-emitting sub-pixels 22; the encapsulation layer 30 is arranged on the side of the light-emitting layer 20 away from the substrate 10; wherein, the encapsulation layer 30 includes a light extraction layer 31, and the light extraction layer 31 includes a plurality of light extraction parts 311, and each light extraction part 311 is arranged corresponding to at least one light-emitting sub-pixel 22 arranged in a continuous manner.

[0041] Specifically, the light-emitting layer 20 disposed on one side of the substrate 10 includes a plurality of pixel units 21 arranged in an array. Each pixel unit 21 includes a plurality of light-emitting sub-pixels 22 emitting different colors, enabling the display panel to display images of different colors. An encapsulation layer 30 is disposed on the side of the light-emitting layer 20 away from the substrate 10 to protect the light-emitting sub-pixels 22 in the light-emitting layer 20 from damage by external moisture and oxygen.

[0042] Among them, the encapsulation layer 30 includes a light extraction layer 31. Compared with the related art in which the light extraction layer is arranged on the side of the encapsulation layer away from the light emitting layer, the embodiment of the utility model arranges the light extraction layer 31 in the encapsulation layer 30, so that the light emitted by the light emitting layer 20 can pass through the light extraction layer 31 before the light emitted by the light emitting layer 20 passes through the multiple film layers with different refractive indices in the encapsulation layer 30, thereby reducing the distance between the light extraction layer 31 and the light emitting layer 20, thereby reducing optical loss, which is beneficial to improving the light extraction efficiency of the display panel, and further improving the light extraction performance of the display panel. And the entire layer of the light extraction layer 31 is patterned to include a plurality of light extraction parts 311. In the thickness direction of the substrate 10, each light extraction part 311 is arranged corresponding to at least one light emitting sub-pixel 22 continuously arranged in the light emitting layer 20. Among them, the thickness direction of the substrate 10 can be formed by Figure 2 In other words, there is a certain distance between two adjacent light extraction parts 311. One light extraction part 311 can be provided corresponding to one light-emitting sub-pixel 22, or to two adjacent light-emitting sub-pixels 22, or to a plurality of light-emitting sub-pixels 22 arranged in a row, without limitation. By patterning the light extraction layer 31 to form a plurality of discrete light extraction parts 311, and making each light extraction part 311 corresponding to a corresponding light-emitting sub-pixel 22, the size of the light extraction part 311 can be designed according to the size of the corresponding light-emitting sub-pixel 22, thereby further improving the light extraction performance of the display panel and reducing optical loss.

[0043] The display panel packaging structure provided by the embodiment of the present invention has a light-emitting layer including a plurality of pixel units arranged in an array on the surface of one side of the substrate, and the pixel unit includes a plurality of light-emitting sub-pixels. An encapsulation layer is provided on the side of the light-emitting layer away from the substrate, and the encapsulation layer includes a light extraction layer. By arranging the light extraction layer in the encapsulation layer in this way, the distance between the light-emitting layer and the light extraction layer can be reduced, thereby reducing optical loss, which is beneficial to improving the light extraction efficiency of the display panel, and further improving the light extraction performance of the display panel. The light extraction layer includes a plurality of light extraction parts, and each light extraction part is provided corresponding to at least one light-emitting sub-pixel arranged in series. In this way, the size of each light extraction part can be designed according to the size of a single light-emitting sub-pixel, thereby further improving the light extraction performance of the display panel.

[0044] There are multiple ways to dispose the light extraction portions 311 in the light extraction layer 31 . The following embodiments will specifically describe different ways to dispose the light extraction portions 311 .

[0045] Optionally, Figure 3 This is a top view of a configuration of a light extraction unit provided by an embodiment of the present invention. Figure 3 As shown, the light-emitting sub-pixel 22 includes a red light-emitting sub-pixel 221, a green light-emitting sub-pixel 222 and a blue light-emitting sub-pixel 223; each light extraction portion 311 is respectively arranged in a one-to-one correspondence with each red light-emitting sub-pixel 221, each green light-emitting sub-pixel 222 and each blue light-emitting sub-pixel 223.

[0046] For example, each light-emitting unit 21 in the light-emitting layer 20 includes a plurality of light-emitting sub-pixels 22 emitting different colors, such as a red light-emitting sub-pixel 221, a green light-emitting sub-pixel 222, and a blue light-emitting sub-pixel 223. The light-emitting sub-pixels 22 can be arranged in an array, and a light extraction portion 311 is provided directly above each light-emitting sub-pixel 22, thereby effectively improving the light extraction performance of the display panel.

[0047] Optionally, Figure 4 This is a top view of another arrangement of the light extraction portion provided by the embodiment of the present invention. Figure 4 As shown, the light-emitting sub-pixel 22 includes a red light-emitting sub-pixel 221 , a green light-emitting sub-pixel 222 and a blue light-emitting sub-pixel 223 .

[0048] The orthographic projection of each light extraction portion 311 on the horizontal plane covers the orthographic projection of at least two red light-emitting sub-pixels 221 arranged in a row on the horizontal plane; or, the orthographic projection of each light extraction portion 311 on the horizontal plane covers the orthographic projection of at least two green light-emitting sub-pixels 222 arranged in a row on the horizontal plane; or, the orthographic projection of each light extraction portion 311 on the horizontal plane covers the orthographic projection of at least two blue light-emitting sub-pixels 223 arranged in a row on the horizontal plane.

[0049] Specifically, each light extraction portion 311 included in the light extraction layer 31 can be provided corresponding to at least two consecutively arranged light-emitting sub-pixels 22 having the same light-emitting color, so that each light extraction portion 311 can be designed to improve the light extraction performance of the display panel when displaying a monochrome image. For example, Figure 4 The figure shows that the orthographic projection of each light extraction portion 311 on a horizontal plane covers the orthographic projection of two consecutively arranged red sub-pixels 221, two consecutively arranged green sub-pixels 222, and two consecutively arranged blue sub-pixels 223. In this way, the light extraction portions 311 corresponding to the sub-pixels 22 of different luminous colors can be designed separately to improve the light extraction performance of the display panel when displaying red, green, and blue images, respectively.

[0050] Optionally, Figure 5 This is a top view of another arrangement of the light extraction portion provided by the embodiment of the present invention. Figure 5 As shown, the orthographic projection of each light extraction portion 311 on the horizontal plane covers the orthographic projection of at least two consecutively arranged light-emitting sub-pixels 22 with different light-emitting colors on the horizontal plane.

[0051] Specifically, each light extraction portion 311 may also be provided corresponding to at least two light-emitting sub-pixels 22 having different light-emitting colors. Figure 5 The figure shows the horizontal plane orthographic projection of each light extraction portion 311 covering the horizontal plane orthographic projection of three consecutively arranged light-emitting sub-pixels 22 of different luminous colors, namely the horizontal plane orthographic projections of the red light-emitting sub-pixel 221, the green light-emitting sub-pixel 222, and the blue light-emitting sub-pixel 223. In this way, the design of each light extraction portion 311 can improve the light extraction performance of each pixel unit 21 in the display panel.

[0052] It should be noted that, compared to the improvement effect on the light extraction performance of the display panel when each light extraction portion 311 is provided in correspondence with at least two light-emitting sub-pixels 22 arranged in a continuous manner, the improvement effect on the light extraction performance of the display panel when each light extraction portion 311 is provided in a one-to-one correspondence with each light-emitting sub-pixel 22 is better. In addition, the light extraction layer 31 has a certain water and oxygen barrier capability. The light extraction layer 31 is provided in the encapsulation layer 30. Therefore, the light extraction layer 31 is provided in the encapsulation layer 30. The water and oxygen barrier capability of the encapsulation layer 30 can be improved, and the thickness of the display panel can be reduced to a certain extent, which is conducive to miniaturization of the display panel, and achieves a good encapsulation effect, thereby improving the reliability of the display panel. In the display panel encapsulation structure provided in any embodiment of the present utility model, the light extraction layer 31 includes a plurality of discrete light extraction portions 311. When one of the light extraction portions 311 is damaged, it will not affect the other light extraction portions 311. Therefore, it will not have a significant impact on the water and oxygen blocking capability of the entire light extraction layer 31 , thereby facilitating the improvement of the lateral water and oxygen blocking capability of the display panel and protecting the light emitting layer 20 from damage by external moisture and oxygen.

[0053] Optionally, based on the above embodiments, Figures 2 to 5 , the orthographic projection of the light extraction portion 311 on the horizontal plane completely covers the orthographic projection of the corresponding light-emitting sub-pixel 22 on the horizontal plane.

[0054] For example, the area of the light extraction portion 311 is set to be slightly larger than the area occupied by the corresponding at least one continuously arranged light-emitting sub-pixel 22, so that the orthographic projection of the light extraction portion 311 on the horizontal plane completely covers the orthographic projection of the corresponding at least one continuously arranged light-emitting sub-pixel 22 on the horizontal plane. In this way, as much radial light as possible emitted by the light-emitting sub-pixel 22 can pass through the corresponding light extraction portion 311, so that the light extraction layer 31 can effectively improve the light extraction performance of the display panel.

[0055] Optionally, Figure 6 This is a cross-sectional structural diagram of another display panel packaging structure provided by the embodiment of the present invention. Figure 2 and Figure 6 , the light extraction portion 311 has a preset etching tilt angle θ; wherein the preset etching tilt angle θ is the angle between the side surface of the etched light extraction portion 311 and the horizontal plane; the preset etching tilt angle θ is less than or equal to 90°.

[0056] Specifically, the entire inorganic layer formed by the coating is patterned and etched to form a light extraction layer 31 including a plurality of discrete light extraction portions 311. The etching conditions of the light extraction portions 311 can be controlled so that the light extraction portions 311 formed after etching have different cross-sectional patterns. The side surfaces of the light extraction portions 311 formed by etching have a preset etching inclination angle θ with the horizontal plane. For example, the preset etching inclination angle θ can be less than 90°, that is, the cross-sectional shape of the light extraction portion 311 is a semi-ellipse or a regular trapezoid, wherein, Figure 6 The cross-sectional shape of the light extraction portion 311 is a regular trapezoid; the preset etching tilt angle θ can also be equal to 90°, that is, the cross-sectional shape of the light extraction portion 311 is a semicircle or a rectangle, wherein, Figure 2 The cross-sectional shape of the light extraction portion 311 is shown as a rectangle, which is not limited here. Preferably, after patterning the entire inorganic layer, multiple light extraction portions 311 with a preset etching angle θ of 90° are formed, which has a better effect on improving the light extraction performance of the display panel.

[0057] Optionally, Figure 7 This is a cross-sectional view of another display panel packaging structure provided by the embodiment of the present invention. Figure 7 As shown, the encapsulation layer 30 further includes: a first inorganic layer 32 , an organic layer 33 and a second inorganic layer 34 .

[0058] The first inorganic layer 32 is disposed to surround the light emitting layer 20 , and the organic layer 33 is disposed to surround the light extraction layer 31 ; the second inorganic layer 34 is disposed to surround the first inorganic layer 32 and the organic layer 33 .

[0059] Exemplarily, the first inorganic layer 32 is formed by coating the surface of the light-emitting layer 20 on the side away from the substrate 10 with an inorganic material. The thickness of the first inorganic layer 32 is greater than the thickness of the light-emitting layer 20, and therefore, the first inorganic layer 32 completely covers the light-emitting layer 20. An inorganic layer is formed by coating the surface of the first inorganic layer 32 on the side away from the light-emitting layer 20 with an inorganic material. Alternatively, a hexamethyldisiloxane (HMDSO) process can be used to prepare a polymer film layer using SiOC material, and the film layer is patterned to form the light extraction layer 31. An organic layer 33 is formed on the surface of the light extraction layer 31 on the side away from the first inorganic layer 32 by inkjet printing. Exemplarily, the orthographic projection of the organic layer 33 on the horizontal plane covers at least a portion of the orthographic projection of the first inorganic layer 32 on the horizontal plane, that is, the organic layer 33 does not completely cover the first inorganic layer 32. The material of the organic layer 33 includes any one of acrylic, epoxy resin and silicone resin, which are not limited here. The thickness of the organic layer 33 is greater than that of the light extraction layer 31, so the organic layer 33 completely covers the light extraction layer 31. An inorganic material is applied to the surface of the organic layer 33 on the side away from the light extraction layer 31 to form a second inorganic layer 34. The second inorganic layer 34 completely covers the first inorganic layer 32 and the organic layer 33, that is, the second inorganic layer 34 serves as the outermost layer in the encapsulation layer 30 of the display panel, so that there is no interface formed between the film layers on the side of the display panel. Therefore, it can be ensured that the display panel has a good encapsulation effect, and the light extraction layer 31 has the ability to block water and oxygen, which can protect the light-emitting layer 20 from the influence of external water and oxygen. Exemplarily, the materials of the first inorganic layer 32 and the second inorganic layer 34 include any one of SiNx, SiOx, SiOxNy, AlOx and TiOx, which are not limited here.

[0060] An embodiment of the present utility model further provides a display device. Figure 8 This is a schematic diagram of the structure of a display device provided by an embodiment of the present utility model. Figure 8 As shown, the display device includes the display panel packaging structure provided by any of the above embodiments, and the display panel can be a mobile phone panel, etc. Among them, an encapsulation layer is provided on the side of the light-emitting layer away from the substrate, and a light extraction layer is provided in the encapsulation layer, which can reduce the distance between the light-emitting layer and the light extraction layer, thereby reducing optical loss, which is beneficial to improving the light extraction efficiency of the display panel, and further improving the light extraction performance of the display panel. The light extraction layer has a certain water and oxygen blocking ability, which can improve the packaging effect of the encapsulation layer on the display panel. The light extraction layer includes a plurality of discrete light extraction parts, and each light extraction part is provided corresponding to at least one light-emitting sub-pixel arranged continuously in the light-emitting layer. In this way, the size of each light extraction part can be designed according to the size of a single light-emitting sub-pixel, thereby improving the light extraction performance of the display panel.

[0061] The above specific embodiments do not limit the scope of protection of this utility model. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model shall be included within the scope of protection of this utility model.

Claims

1. A display panel packaging structure, characterized in that: include: substrate; a light-emitting layer, the light-emitting layer being disposed on one side surface of the substrate; The light-emitting layer includes a plurality of pixel units arranged in an array, and each of the pixel units includes a plurality of light-emitting sub-pixels; an encapsulation layer, the encapsulation layer being disposed on a side of the light-emitting layer away from the substrate; The encapsulation layer includes a light extraction layer, and the light extraction layer includes a plurality of light extraction portions, each of which is arranged corresponding to at least one of the continuously arranged light-emitting sub-pixels.

2. The display panel packaging structure according to claim 1, wherein: The light-emitting sub-pixels include red light-emitting sub-pixels, green light-emitting sub-pixels and blue light-emitting sub-pixels; Each of the light extraction portions is disposed in one-to-one correspondence with each of the red light-emitting sub-pixels, each of the green light-emitting sub-pixels, and each of the blue light-emitting sub-pixels.

3. The display panel packaging structure according to claim 1, wherein: The light-emitting sub-pixels include red light-emitting sub-pixels, green light-emitting sub-pixels and blue light-emitting sub-pixels; The orthographic projection of each of the light extraction portions on the horizontal plane covers the orthographic projections of at least two consecutively arranged red light-emitting sub-pixels on the horizontal plane; Alternatively, the orthographic projection of each of the light extraction portions on the horizontal plane covers the orthographic projection of at least two consecutively arranged green light-emitting sub-pixels on the horizontal plane; Alternatively, the orthographic projection of each of the light extraction portions on the horizontal plane covers the orthographic projections of at least two of the continuously arranged blue light-emitting sub-pixels on the horizontal plane.

4. The display panel packaging structure according to claim 1, wherein: The orthographic projection of each of the light extraction portions on the horizontal plane covers the orthographic projections of at least two consecutively arranged light-emitting sub-pixels with different light-emitting colors on the horizontal plane.

5. The display panel packaging structure according to claim 2, 3 or 4, wherein: The orthographic projection of the light extraction portion on the horizontal plane completely covers the orthographic projection of the corresponding light-emitting sub-pixel on the horizontal plane.

6. The display panel packaging structure according to claim 5, wherein: The light extraction portion has a preset etching inclination angle; wherein the preset etching inclination angle is the angle between the side surface of the light extraction portion after etching and the horizontal plane; The preset etching tilt angle is less than or equal to 90°.

7. The display panel packaging structure according to claim 1, wherein: The encapsulation layer further comprises: a first inorganic layer, an organic layer, and a second inorganic layer; The first inorganic layer is disposed to surround the light emitting layer, and the organic layer is disposed to surround the light extraction layer; and the second inorganic layer is disposed to surround the first inorganic layer and the organic layer.

8. The display panel packaging structure according to claim 7, wherein: The orthographic projection of the organic layer on the horizontal plane covers at least a portion of the orthographic projection of the first inorganic layer on the horizontal plane.

9. The display panel packaging structure according to claim 7, wherein: The materials of the first inorganic layer and the second inorganic layer include SiN x 、SiO x 、SiO x N y 、AlO x and TiO x Any of the following; The material of the organic layer includes any one of acrylic, epoxy resin and silicone resin.

10. A display device, characterized in that: The display panel packaging structure comprises the display panel packaging structure as described in any one of claims 1 to 9.

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