Display panel and display device

Abstract

The invention relates to a display panel and a display device, and the display panel comprises a substrate which is at least arranged in a non-light-transmitting area; the light-emitting unit is arranged on one side of the substrate and located in the non-light-transmitting area. The at least one light blocking structure is arranged on the side, facing the light emitting unit, of the substrate, and the distance between the surface of the side, deviating from the substrate, of the light blocking structure and the substrate is larger than that between the surface of the side, deviating from the substrate, of the light emitting unit and the substrate; the orthographic projection of the light blocking structure on the substrate is at least partially located on the side, facing the light transmitting area, of the light emitting unit. At least part of the light blocking structure is arranged on the side, facing the light transmitting area, of the light emitting unit, and the height, in the direction away from the substrate, of the light blocking structure is designed to be larger than the height of the light emitting unit, so that the light blocking structure is located on a propagation path of large-viewing-angle light causing back light leakage as much as possible; therefore, most of the large-viewing-angle light rays are shielded, the light rays are prevented from entering the light-transmitting area, and the privacy leakage problem that information is visible from the back face is solved.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display panel and display device. Background Technology

[0002] With the continuous development of display technology, various display devices have been widely used in electronic products such as smartphones, tablets, laptops, and smart wearable devices, becoming the core carrier for users to obtain visual information. Among them, transparent display devices refer to display devices that can provide a transparent display state so that users can view the scene behind them, and are commonly found in demonstration boards, shop windows, vending machines, etc.

[0003] The transparent display device has a display area and a light-transmitting area. The display area provides a screen for the user to view, while the light-transmitting area is transparent, allowing the user to see what is behind it. Pixels are provided in the display area to emit image beams towards the display surface of the transparent display device, thereby providing the image. Summary of the Invention

[0004] Therefore, it is necessary to provide a display panel and display device to solve the problem that in the transparent display device of the related technology, part of the image beam is reflected back into its light-transmitting area at the interface between the display surface and the outside world, and then passes out from the back of the transparent display device, causing back-side light leakage.

[0005] In a first aspect, embodiments of this application provide a display panel having a light-transmitting area and a light-blocking area, wherein the light-blocking area is disposed on at least one side of the light-transmitting area; the display panel includes:

[0006] A substrate is provided at least in the non-transparent area;

[0007] The light-emitting unit is disposed on one side of the substrate and located in the non-transparent area;

[0008] At least one light-blocking structure is disposed on the side of the substrate facing the light-emitting unit, and the distance between the light-blocking structure and the substrate on the side facing away from the substrate is greater than the distance between the light-emitting unit and the substrate on the side facing away from the substrate; the orthogonal projection of the light-blocking structure on the substrate is at least partially located on the side of the light-emitting unit facing the light-transmitting area.

[0009] And / or, the light-emitting unit includes a plurality of light-emitting devices, and the light-blocking structure is disposed between at least two adjacent light-emitting devices among the plurality of light-emitting devices;

[0010] And / or, the light-blocking structure is disposed on opposite sides of the light-emitting unit.

[0011] Secondly, embodiments of this application also provide a display device, which includes the display panel provided in the first aspect.

[0012] The display panel provided in this application embodiment provides at least a portion of the light-blocking structure on the side of the light-emitting unit facing the light-transmitting area, and designs the height of the light-blocking structure along the direction away from the substrate to be greater than the height of the light-emitting unit. This makes the light-blocking structure as close as possible to the propagation path of the wide-view light that causes back-side light leakage, thereby blocking most of these wide-view light rays and preventing light from entering the light-transmitting area, thus solving the privacy leakage problem of information visible from the back. Attached Figure Description

[0013] Figure 1 This is a cross-sectional schematic diagram of a display panel provided in an embodiment of this application;

[0014] Figure 2 A cross-sectional schematic diagram of another display panel provided in an embodiment of this application;

[0015] Figure 3 A cross-sectional schematic diagram of another display panel provided in an embodiment of this application;

[0016] Figure 4 A cross-sectional schematic diagram of another display panel provided in an embodiment of this application;

[0017] Figure 5 A cross-sectional schematic diagram of another display panel provided in an embodiment of this application;

[0018] Figure 6 A schematic diagram of the front structure of a display panel provided in an embodiment of this application;

[0019] Figure 7 A cross-sectional schematic diagram of another display panel provided in an embodiment of this application;

[0020] Figure 8 A schematic diagram of the front structure of another display panel provided in an embodiment of this application;

[0021] Figure 9 A cross-sectional schematic diagram of another display panel provided in an embodiment of this application;

[0022] Figure 10 A cross-sectional schematic diagram of another display panel provided in an embodiment of this application;

[0023] Figure 11 A cross-sectional schematic diagram of another display panel provided in an embodiment of this application;

[0024] Figure 12 A cross-sectional schematic diagram of another display panel provided in an embodiment of this application;

[0025] Figure 13 A cross-sectional schematic diagram of another display panel provided in an embodiment of this application;

[0026] Figure 14 A cross-sectional schematic diagram of another display panel provided in an embodiment of this application;

[0027] Figure 15 This is a schematic diagram showing the positional relationship between the light-blocking structure and the light-emitting device provided in an embodiment of this application;

[0028] Figure 16 This is a schematic diagram of the structure of the display device provided in the embodiments of this application. Detailed Implementation

[0029] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] When describing positional relationships, unless otherwise specified, when an element, such as a layer, film, or substrate, is referred to as being "on" another element, it may be directly on the other element or there may be intermediate elements present. Furthermore, when a layer is referred to as being "below" another layer, it may be directly below it or there may be one or more intermediate elements present. It is also understood that when a layer is referred to as being "between" two layers, it may be the only layer between the two layers, or there may be one or more intermediate elements present.

[0032] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0033] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this application, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0034] It should also be understood that, in interpreting an element, although not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of a particular value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0035] Furthermore, in the instruction manual, the phrase "planar distribution diagram" refers to the diagram when the target part is viewed from above, and the phrase "cross-sectional diagram" refers to the diagram when the target part is viewed from the side as a cross-section taken by vertically cutting the target part.

[0036] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0037] As described in the background section, in transparent display devices of the related art, a portion of the image beam is reflected back into the light-transmitting area at the interface between the display surface and the outside world, and then exits from the back of the transparent display device, causing back-side light leakage. The inventors discovered that the reason for this phenomenon is that the light emitted by the light-emitting devices in the display area is not entirely perpendicular to the display surface; a large number of rays have a large angle with the normal direction. When these rays with a large angle propagate to the outermost optical interface of the transparent display device, usually the interface between the glass cover and the air, if the angle of incidence is greater than or equal to the critical angle of total internal reflection, total internal reflection will occur, and the light will not be transmitted out of the display device. Then, the light that has undergone total internal reflection will change direction, propagate towards the back inside the display device, and finally exit from the light-transmitting area or other non-light-emitting areas, causing information that should be displayed on the front to be visible from the back, resulting in visual interference and privacy leakage.

[0038] Based on the aforementioned technical problems, the inventors discovered that by setting a light-blocking structure on the side of the light-emitting unit facing the light-transmitting area, the phenomenon of information from the back of the display panel being displayed can be improved. Based on this, the inventors further developed the technical solution of the embodiments of this application. Specifically, the display panel provided in the embodiments of this application includes a substrate, a light-emitting unit, and at least one light-blocking structure. The light-emitting unit is disposed on one side of the substrate and located in a non-light-transmitting area; at least one light-blocking structure is disposed on the side of the substrate facing the light-emitting unit, and the distance between the light-blocking structure and the substrate on the side facing away from the substrate is greater than the distance between the light-emitting unit and the substrate on the side facing away from the substrate; the orthogonal projection of the light-blocking structure onto the substrate is at least partially located on the side of the light-emitting unit facing the light-transmitting area. By employing the above technical solution, by placing at least a portion of the light-blocking structure on the side of the light-emitting unit facing the light-transmitting area, and designing the height of the light-blocking structure along the direction away from the substrate to be greater than the height of the light-emitting unit, the light-blocking structure is positioned as close as possible to the propagation path of the wide-angle light rays that cause back-side light leakage, thereby blocking most of these wide-angle light rays and preventing light from entering the light-transmitting area, thus solving the privacy leakage problem of information visible from the back.

[0039] The above is the core idea of ​​this application. The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0040] Figure 1 This is a cross-sectional schematic diagram of a display panel provided in an embodiment of this application; Figure 2 This is a cross-sectional schematic diagram of another display panel provided in an embodiment of this application. (In conjunction with...) Figure 1 and Figure 2 As shown, the display panel 10 provided in this embodiment has a light-transmitting area NA and a non-light-transmitting area AA, with the non-light-transmitting area AA disposed on at least one side of the light-transmitting area NA. The display panel 10 may also include a substrate 11, a light-emitting unit 12, and at least one light-blocking structure 13.

[0041] The substrate 11 is at least located in the non-transparent area AA; the light-emitting unit 12 is located on one side of the substrate 11 and in the non-transparent area AA; at least one light-blocking structure 13 is located on the side of the substrate 11 facing the light-emitting unit 12, and the distance between the light-blocking structure 13 and the substrate 11 is greater than the distance between the light-emitting unit 12 and the substrate 11; the orthogonal projection of the light-blocking structure 13 onto the substrate 11 is at least partially located on the side of the light-emitting unit 12 facing the transparent area NA.

[0042] It is understood that in this example, the light-transmitting area NA and the non-light-transmitting area AA actually divide the substrate 11 into the light-transmitting area NA and the non-light-transmitting area AA. The light-transmitting area NA can include the non-light-transmitting area AA, or the non-light-transmitting area AA can include the light-transmitting area NA. For example, the substrate 11 is made of a transparent material. By treating the area where the light-emitting unit 12 needs to be disposed as non-light-transmitting, all or part of the remaining area is used as the light-transmitting area NA.

[0043] In this embodiment, the substrate 11 can be specifically divided into a support substrate 111 and a functional substrate 112. Both can be made of transparent glass or flexible polymers (such as polyimide), and there are no limitations on their materials. The support substrate 111 primarily provides physical support to ensure the structural stability of the display panel 10; while the functional substrate 112 integrates circuitry for controlling the switching of the light-emitting units 12. Taking MicroLED (Micro Light Emitting Diode) as an example, the functional substrate 112 integrates a driving circuit that controls each MicroLED pixel. The specific structure can be understood by referring to relevant technologies, and will not be elaborated further here.

[0044] In this example, the light-emitting unit 12 can be a standalone light-emitting device 121 (e.g., a miniature light-emitting diode chip), or a pixel unit composed of red, green, and blue sub-pixels; no specific limitation is made here. When the light-emitting unit 12 is powered on, the light it generates radiates in all directions, including the light required for both normal and narrow viewing angles, as well as the light from the wide viewing angle that causes the aforementioned problems. To prevent the emitted light from directly entering the back side, the light-emitting unit 12 is located in the non-transparent area AA.

[0045] In this example, the light-blocking structure 13 is disposed on the side of the substrate 11 facing the light-emitting unit 12, i.e., on the same side as the light-emitting unit 12. If the direction in which the light-blocking structure 13 extends away from the substrate 11 is defined as the height direction, then the distance between the surface of the light-blocking structure 13 away from the substrate 11 (i.e., the top surface) and the substrate 11 is greater than the distance between the surface of the light-emitting unit 12 away from the substrate 11 and the substrate 11. This arrangement ensures that the light-blocking structure 13 has a height sufficient to block light from a wide viewing angle along the thickness direction of the substrate 11.

[0046] The orthographic projection of the light-blocking structure 13 onto the plane of the substrate 11 is at least partially located on the side of the light-emitting unit 12 facing the light-transmitting area NA. It can also be understood that at least part of the light-blocking structure 13 is located in the area between the light-emitting unit 12 and the light-transmitting area NA.

[0047] Specifically, the light-blocking structure 13 can block the wide-viewing-angle light emitted by the light-emitting unit 12, including selective absorption. The propagation direction of the wide-viewing-angle light in the light-emitting unit 12 is closer to horizontal, and its light path will first intersect with the light-blocking structure 13 located on the side before it reaches the outermost cover plate. For example, the light-blocking structure 13 can be made of a high light-absorbing material (e.g., carbon black-doped resin). When the aforementioned wide-viewing-angle light is incident on the side surface of the light-blocking structure 13, most of the light is absorbed by its material without significant reflection or transmission. Even if a very small portion of the light reaches the interface and undergoes total internal reflection, its light intensity is greatly attenuated, thereby reducing the light leakage brightness observable from the display panel 10.

[0048] In some examples, the light-blocking structure 13 is located on the side of the light-emitting unit 12 facing the light-transmitting area NA, and the design minimizes the projected area of ​​the light-blocking structure 13 in the frontal viewing direction. Therefore, the useful light rays from the frontal viewing direction that are perpendicular or at a small angle to the light-emitting unit 12 can pass through almost unobstructed, thereby ensuring that the display brightness and efficiency are not significantly affected.

[0049] In some examples, the cross-sectional shape of the light-blocking structure 13 along the thickness direction of the substrate 11 can be a regular trapezoid, an inverted trapezoid, etc. The specific shape of the light-blocking structure 13 is subject to its formation process, which may include photolithography, groove filling, imprint filling, etc., but the design benchmark should be to minimize the width (horizontal direction) of the light-blocking structure 13.

[0050] In other examples, the light-blocking structure 13 can be a continuous wall-like structure extending along the edge of the non-transparent area AA, or it can be an intermittent wall-like structure, without limitation.

[0051] In some other examples, the distribution density of the light-blocking structure 13 can be reduced along the direction away from the light-transmitting area NA. For example, only one layer of light-blocking structure 13 can be provided to reduce the area of ​​light blocked at the normal viewing angle while providing a shielding effect. Conversely, the distribution density of the light-blocking structure 13 can be increased in the critical region between the light-emitting unit 12 and the light-transmitting area NA to increase the shielding strength. Of course, the critical region mentioned above can be the area with a small distance between the light-emitting unit 12 and the light-transmitting area NA, or the area in the light-emitting area where the blue pixels are close to the light-transmitting area NA, etc. The specific design is based on the concentration degree and concentration area of ​​the actual total internal reflection light, and is not limited here.

[0052] Additionally, it should be noted that the height of the light-blocking structure 13 can be designed according to its location. That is, the closer it is to the light-transmitting area NA, the larger the angle of light that needs to be blocked may be, and the light-blocking structure 13 can be designed to be taller.

[0053] In some feasible examples, the sidewall of the light-blocking structure 13 may not be perpendicular to the substrate 11, but rather designed with an angle. For example, the top surface of the light-blocking structure 13 can be designed to tilt towards the light-transmitting area NA to increase the effective absorption path length. Of course, the tilt direction of the light-blocking structure 13 can also be designed according to the actual viewing angle of the human eye, so as to adjust the light emission angle of the light-emitting unit 12 through the tilt design of the light-blocking structure 13. In addition, through the tilt design of the light-blocking structure 13, the light emission viewing angle can be further expanded on the basis of achieving light blocking, thereby improving the display effect.

[0054] In summary, the display panel 10 provided in this application embodiment, by disposing at least a portion of the light-blocking structure 13 on the side of the light-emitting unit 12 facing the light-transmitting area NA, and designing the height of the light-blocking structure 13 in the direction away from the substrate 11 to be greater than the height of the light-emitting unit 12, makes the light-blocking structure 13 as close as possible to the propagation path of the wide-view light that causes back-side light leakage, thereby blocking most of these wide-view light rays to prevent light from entering the light-transmitting area NA, and thus solving the privacy leakage problem of information visible from the back.

[0055] In some embodiments, such as Figure 1 and Figure 2 As shown, along the direction from the non-transparent area AA to the transparent area NA, the orthographic projection of the light-blocking structure 13 overlaps with the orthographic projection of the light-emitting unit 12.

[0056] It is understandable that the bottom surface of the light-blocking structure 13 in this example (the end closest to the substrate 11) can start from the surface of the substrate 11 or be a certain distance away from the surface of the substrate 11, but less than the height of the light-emitting unit 12. This design can block the light emitted from the side of the light-emitting unit 12 at a large angle, achieving efficient blocking of the core light leakage path.

[0057] In other embodiments, the distance from the bottom surface of the light-blocking structure 13 to the substrate 11 is greater than the height of the light-emitting unit 12. Specifically, the position of the light-blocking structure 13 can be designed according to the actual optical path of the large-angle light rays participating in total internal reflection to the light-transmitting area NA, so as to block most of the light rays entering the light-transmitting area NA through total internal reflection. This design can also save materials.

[0058] In some embodiments, such as Figure 1 and Figure 2 As shown, the light-blocking structure 13 includes a first end close to the substrate 11 and a second end away from the substrate 11, and the direction from the first end to the second end is parallel to the thickness direction of the substrate 11.

[0059] Specifically, the direction from the first end to the second end of the light-blocking structure 13 is the direction of extension of the central axis of the light-blocking structure 13. In this example, the light-blocking structure 13 is similar to a wall, continuously or intermittently surrounding the light-emitting unit 12. In this embodiment, the light-blocking structure 13 is a wall-like structure with its central axis perpendicular to the surface of the substrate 11. Its first end can be connected to the substrate 11 or the cover film layer above the substrate 11, and its second end faces the outside of the display panel 10. The light-blocking structure 13, which is set perpendicular to the thickness direction of the substrate 11, is advantageous for designing its height and setting position, simplifying the optical path calculation. In addition, it is also convenient to form the light-blocking structure 13, without the need for complex tilting exposure or special templates, which helps to reduce production costs and improve yield. Furthermore, under the premise of achieving the same light-blocking height, the vertical structure occupies the smallest bottom projection area, which is beneficial for compact arrangement between pixels.

[0060] Unlike the light-blocking structure 13 described above, which is perpendicular to the substrate 11, in other embodiments, such as... Figure 3 and Figure 4 As shown, the light-blocking structure 13 includes a first end close to the substrate 11 and a second end away from the substrate 11, and the direction from the first end to the second end intersects the thickness direction of the substrate 11 at an angle.

[0061] It is understandable that the light-blocking structure 13 is tilted slightly based on the light-blocking structure 13 that is perpendicular to the surface of the substrate 11. Taking the light-blocking structure 13 disposed on one side of the light-emitting unit 12 as an example, in this example, one side of the light-emitting unit 12 refers to the side of the light-emitting unit 12 corresponding to any direction parallel to the plane where the display panel is located. The tilt angle and direction of the light-blocking structure 13 on the same side are the same.

[0062] In one example, such as Figure 3 and Figure 4 As shown, along the direction from the non-transparent area AA to the transparent area NA, the distance between the second end of the light-blocking structure 13 and the transparent area NA is less than the distance between the first end of the light-blocking structure 13 and the transparent area NA.

[0063] For example, the light-blocking structure 13 is tilted towards the light-transmitting area NA. While efficiently absorbing the light leaking through the back of the light-transmitting area NA, the light-blocking structure 13 can also further expand the viewing angle of the light-emitting unit 12 to improve the viewing brightness and display effect.

[0064] In one example, the light-blocking structure 13 is tilted towards the viewer's eye from the second end to the first end. Exemplarily, the light-blocking structure 13 is tilted towards the intended viewer, absorbing light from a wide viewing angle while simultaneously defining the overall light emission path of the light-emitting unit 12, thereby matching the viewer's viewing direction and achieving stronger light intensity in a specific direction. The specific tilt angle of the light-blocking structure 13 can be designed according to the angle of the desired strong light direction and is not limited here.

[0065] In some embodiments, such as Figures 2 to 4 As shown, in a direction parallel to the plane of the display panel, the light-blocking structure 13 is disposed on opposite sides of the light-emitting unit 12. For example, if the light-emitting unit 12 includes only one light-emitting device 121, then the light-blocking structure 13 can be disposed on both sides of the light-blocking structure 13 along the row direction, or on both sides of the light-blocking structure 13 along the column direction, or both along the row and column directions. If the light-emitting unit 12 includes multiple light-emitting devices 121, then the arrangement of the light-blocking structure 13 can be designed with the light-emitting unit 12 as a whole; that is, the light-blocking structure 13 can be disposed on both sides of the light-blocking structure 13 along the row direction, or on both sides of the light-blocking structure 13 along the column direction, or both along the row and column directions.

[0066] It should be noted that the two sides of the light-emitting unit 12 in this example are not limited to rows or columns, and the direction between rows and columns is also within the protection scope of this application.

[0067] In other embodiments, such as Figure 5 and Figure 6 As shown, a light-emitting unit 12 has multiple light-emitting devices 121, such as three light-emitting devices 121 of different colors. Each light-emitting device 121 has a light-blocking structure 13 on each of its opposite sides along a direction parallel to the plane of the display panel. Specifically, the distance between the light-blocking structure 13 and the light-emitting device 121, its height, and its shape can be designed independently. For example, the light-blocking structure 13 on the side closer to the light-transmitting area NA can be designed to be higher or thicker to improve the light leakage prevention effect; while the light-blocking structure 13 on the other side mainly prevents crosstalk or light efficiency loss caused by light diffusion into the non-light-transmitting area AA or adjacent light-emitting devices 121.

[0068] More specifically, this arrangement enables bidirectional (e.g., light-blocking structures 13 are provided only on both sides of the light-emitting device 121 along the lateral direction) or omnidirectional (light-blocking structures 13 are provided on both sides of the light-emitting device 121 along the lateral direction and on both sides along the longitudinal direction, that is, the light-blocking structures 13 surround the light-emitting device 121) constraint. It not only absorbs the large-viewing-angle light incident on the light-transmitting area NA direction to solve the back light leakage, but also absorbs the large-viewing-angle light incident on the opposite direction, which is beneficial to improving the display contrast and preventing light crosstalk between adjacent pixels.

[0069] When the display panel 10 is applied to a transparent display cabinet, as a transparent display device 20 that needs to be viewable from both sides or all four sides, the double-sided light-blocking design ensures that when viewed from any direction, the background in the other direction will not be severely affected by light leakage from the display surface, which is beneficial to improving the practicality of multi-view applications.

[0070] In some embodiments, such as Figure 3 and Figure 4 As shown, the light-blocking structures 13 located on opposite sides of the light-emitting unit 12 (in any direction parallel to the plane of the display panel) are inclined relative to the thickness direction of the substrate 11, and the inclination directions are the same.

[0071] For example, the tilting of the light-blocking structures 13 on both sides of the light-emitting unit 12 is based on the light-blocking structures 13 extending perpendicularly to the surface of the substrate 11 (small angle tilt). Taking the light-emitting unit 12 as a light-emitting device 121 as an example, light-blocking structures 13 are provided on both the left and right sides of the light-emitting device 121. The light-blocking structures 13 on both sides can tilt to the right at the same time, or they can tilt to the left at the same time. The light-blocking structures 13 tilted in the same direction can change the optical guiding channel of the light-emitting unit 12, that is, to customize and optimize the light pattern distribution according to the main viewing direction of the human eye or the main direction of the displayed content.

[0072] It should be noted that in this example, the tilt direction of the light-blocking structures 13 on both sides of the light-emitting unit 12, that is, the tilt degree of the second end of the light-blocking structure 13 relative to the first end, the second end can be tilted towards the light-transmitting area NA or towards the non-light-transmitting area AA, and there is no restriction here.

[0073] In some embodiments, such as Figure 4 and Figure 5 As shown, the light-blocking structure 13 includes a first light-blocking part 131 and a second light-blocking part 132. The first light-blocking part 131 and the second light-blocking part 132 are respectively located on opposite sides of the light-emitting unit 12 along a first direction. The first light-blocking part 131 extends in a direction away from the substrate 11 and the second light-blocking part 132 extends in the same direction away from the substrate 11. The first direction is the direction from the non-transparent area AA to the transparent area NA.

[0074] For example, the first direction is defined as the direction from the non-transparent area AA to the transparent area NA, and the first direction is parallel to the plane where the display panel is located. Further, the light-emitting unit 12 is defined to have a front side and a rear side in this direction, with the front side closer to the transparent area NA and the rear side farther away from the transparent area NA. Specifically, the first light-blocking part 131 is located on the front side, and the second light-blocking part 132 is located on the rear side. The first light-blocking part 131 and the second light-blocking part 132 can be parallel in their extension direction perpendicular to the surface of the substrate 11, or they can be inclined relative to the surface of the substrate 11, and these inclinations are parallel to each other.

[0075] In this embodiment, the design first satisfies that the light-emitting unit 12 has a light-blocking structure 13 on the side near the light-transmitting area NA, so that the main wide-viewing-angle light emitted by the light-emitting unit 12 can enter the light-transmitting area NA. Furthermore, the first light-blocking part 131 and the second light-blocking part 132 are respectively located on opposite sides of the light-transmitting unit. By tilting in the same direction, the light emission angle of the light-emitting unit 12 can be constrained, which is beneficial for matching the viewing direction of the human eye.

[0076] In some embodiments, such as Figure 6 As shown, the display panel 10 includes a plurality of light-emitting units 12, and there is at least a partially light-transmitting area NA between adjacent light-emitting units 12; the light-emitting unit 12 includes a plurality of light-emitting devices 121.

[0077] It is understood that the multiple light-emitting units 12 can be understood as pixels or pixel groups, and are arranged in an array. In the row and / or column directions, a light-transmitting area NA is provided between adjacent light-emitting units 12. This design can achieve higher density of inter-pixel transparency and improve the overall transparency. For example, each light-emitting unit 12 itself is composed of multiple sub-pixel light-emitting devices 121, such as a red light, a green light, and a blue light Micro-LED chip.

[0078] Specifically, the gaps between adjacent light-emitting units 12 form part of the light-transmitting area NA, and multiple light-emitting devices 121 within each light-emitting unit 12 can be arranged closely. The light-blocking structure 13 can be arranged around the entire light-emitting unit 12 or inside the light-emitting unit 12, without limitation.

[0079] This embodiment achieves image display while maintaining high pixel density, and also significantly improves the visual transparency of the panel through the light-transmitting area NA between pixels.

[0080] In some embodiments, such as Figure 7 and Figure 8 As shown, the light-emitting unit 12 includes a plurality of light-emitting devices 121, and the light-blocking structure 13 is disposed between at least two adjacent light-emitting devices 121.

[0081] For example, a light-emitting unit 12 includes three sub-pixel light-emitting devices 121, namely red, green and blue. The light-blocking structure 13 is not only provided at the edge of the light-emitting unit 12, but also between adjacent light-emitting devices 121 of red and green, or red and blue.

[0082] Specifically, the light-blocking structure 13 disposed between adjacent light-emitting devices 121 can be relatively thin (along the line connecting adjacent light-emitting devices) and relatively short (along the thickness direction of the substrate). The height of the light-blocking structure 13 can be sufficient to block wide-angle light rays emitted from one side of a light-emitting device 121 towards adjacent devices. Of course, its height can also be the same as the height of the light-blocking structure 13 surrounding the light-emitting unit 12, and there is no limitation here. The light-blocking structure 13 disposed between adjacent light-emitting devices 121 can be integrally connected with the light-blocking structure 13 on the outer periphery of the light-emitting unit 12 to form a mesh.

[0083] In this embodiment, by setting a light-blocking structure 13 between adjacent light-emitting devices 121, it is possible to effectively prevent the large-angle light emitted by a certain light-emitting device 121 from entering the light-transmitting area NA through total internal reflection, thereby further improving the light leakage situation on the back of the light-transmitting area NA.

[0084] In some embodiments, such as Figures 8 to 10 As shown, at least a portion of the area between the light-emitting unit 12 and the light-transmitting area NA is provided with at least two layers of light-blocking structures 13, and the at least two layers of light-blocking structures 13 are spaced apart along the direction from the non-light-transmitting area AA to the light-transmitting area NA.

[0085] It is understandable that two or more layers of light-blocking structures 13 can be provided in the entire area between the light-emitting unit 12 and the light-transmitting area NA. Of course, multiple layers of light-blocking structures 13 can also be selectively provided between the light-emitting unit 12 and the light-transmitting area NA. For example, in a light-emitting unit 12, one side is closer to the light-transmitting area NA than the other sides. Since this side is closer to the light-emitting unit 12, it is very likely that more light will enter the light-transmitting area NA and be reflected to the back of the light-transmitting area NA. In this case, two layers of light-blocking structures 13 can be provided in the area between this side and the light-transmitting area NA, while other areas still have a single layer of light-blocking structure 13.

[0086] For example, a light-emitting unit 12 may include three sub-pixels: red, green, and blue. Since blue light has a shorter wavelength and a relatively higher refractive index, it is more likely to undergo total internal reflection at the interface. Based on this, two layers of light-blocking structures 13 can be set on the side of the blue sub-pixel closest to the light-transmitting area NA, while only one layer of light-blocking structure 13 can be set on the side of other color sub-pixels facing the light-transmitting area NA, but there are no specific restrictions.

[0087] In some embodiments, such as Figure 10As shown, the distance between the end of at least two light-blocking structures 13 away from the substrate 11 and the substrate 11 gradually increases from the non-transparent area AA to the transparent area NA.

[0088] For example, considering that a light-blocking structure 13 may leak light, another light-blocking structure 13 is set on the side of the light-blocking structure 13 facing the light-transmitting area NA. The height of the light-blocking structure 13 needs to be higher than the height of the previous light-blocking structure 13 to match the tilt angle of the wide-view light, thereby achieving more thorough and tight protection against back light leakage.

[0089] In some embodiments, such as Figure 11 As shown, the light-blocking structure 13 includes a third light-blocking part 133 and a fourth light-blocking part 134. The third light-blocking part 133 is located in at least a portion of the area between the light-emitting unit 12 and the light-transmitting area NA. The fourth light-blocking part 134 is located in the remaining portion of the area between the light-emitting unit 12 and the light-transmitting area NA, or the fourth light-blocking part 134 is located in the area between two adjacent light-emitting devices 121 in the light-emitting unit 12. Along the direction from the non-transparent area AA to the light-transmitting area NA, the size of the third light-blocking part 133 is larger than the size of the fourth light-blocking part 134.

[0090] It is understandable that, similar to the design purpose of providing two layers of light-blocking structures 13 on the side of the light-emitting unit 12, this embodiment replaces two or more layers of light-blocking structures 13 with a third light-blocking part 133. If the thickness of the fourth light-blocking part 134 corresponds to the thickness of a single layer of light-blocking structure 13, then the thickness of the third light-blocking part 133 is greater than the thickness of a single layer of light-blocking structure 13, and can correspond to the thickness of two layers of light-blocking structure 13 or the thickness of multiple layers of light-blocking structure 13.

[0091] In some examples, the end face of the third light-blocking part 133 away from the substrate 11 is designed to be tilted, and the tilting direction is consistent with the optical path direction of the wide-view light.

[0092] In some embodiments, such as Figure 1 and Figure 2 As shown, the dimension of the light-blocking structure 13 along the direction from the non-transparent area AA to the transparent area NA is smaller than the dimension of the light-blocking structure 13 along the thickness direction of the substrate 11.

[0093] For example, the light-blocking structure 13 is in the form of a tall, thin column or sheet. The height ensures the light-blocking ability, while the width reduces the area of ​​obstruction to the light-emitting unit 12 when viewed from the front, hardly affecting the pixel aperture ratio, maintaining the front brightness and visual transparency of the display panel 10; and leaving more room for the light-emitting unit 12 and the light-transmitting area NA, allowing for a more compact layout, which is beneficial to increasing pixel density and expanding the area of ​​the light-transmitting area NA.

[0094] In some embodiments, such as Figures 12 to 14 As shown, the display panel 10 also includes a protective layer 14, which is disposed on the side of the light-emitting unit 12 away from the substrate 11; the light-transmitting area and the non-light-transmitting area are both provided with the protective layer 14; and the light-blocking structure 13 is disposed in the protective layer 14.

[0095] It is understood that the protective layer 14 is a multi-layered composite structure disposed above the array of light-emitting units 12 to protect the light-emitting units 12 from water and oxygen erosion and external damage, and to provide an optical interface. Specifically, the protective layer 14 continuously covers the light-transmitting area and the non-light-transmitting area AA. The light-blocking structure 13 is not independent of the protective layer 14, but is formed and embedded within it during the fabrication of the protective layer 14. The protective layer 14 is usually made of a transparent material, and the light-blocking structure 13 exists within it in a patterned form. The material of the light-blocking structure 13 can be a carbon black-doped resin, black photoresist, etc., compatible with the matrix of the protective layer 14.

[0096] In some embodiments, such as Figures 12 to 14 As shown, the protective layer 14 includes an encapsulation layer 141, an adhesive layer 142, and a cover layer 143 stacked along the direction away from the substrate 11. Exemplarily, the encapsulation layer 141 can directly cover the light-emitting unit 12 and the substrate 11, and is typically composed of an organic thin film or an inorganic or organic laminate to passivate and encapsulate, isolating water and oxygen. The adhesive layer 142 is located above the encapsulation layer 141 and is typically an optically transparent adhesive used to bond the encapsulation layer 141 to the cover layer 143 above it. The cover layer 143 is the outermost layer and is typically a glass or high-strength transparent polymer cover, primarily providing physical protection and the main optical interface.

[0097] In one example, the light-blocking structure 13 is disposed between the substrate 11 and the encapsulation layer 141. Exemplarily, the light-blocking structure 13 can be fabricated on the substrate 11, and then an encapsulation layer 141 material with shape-following properties can be coated, allowing it to naturally level and cover the light-blocking structure 13, such as... Figure 1 , Figure 2 As shown. For the light-blocking structure 13 that is inclined relative to the thickness direction of the substrate 11, the formed light-blocking structure 13 can be placed on the substrate 11 by means of SMT (Surface-Mount Technology), and then the encapsulation layer 141 is covered on it.

[0098] In one example, such as Figure 4 , Figure 10 , Figure 13 and Figure 14As shown, the light-blocking structure 13 is disposed between the adhesive layer 142 and the cover layer 143. Exemplarily, a groove is formed on the inner surface of the cover layer 143 by means of laser or the like, then light-blocking material is filled into the groove and cured to form the light-blocking structure 13, and finally it is bonded to the underlying encapsulation layer 141 via the adhesive layer 142. Forming a groove on the inner surface of the cover layer 143 facilitates the formation of an inclined light-blocking structure 13.

[0099] Alternatively, the adhesive layer 142 can be first placed on the encapsulation layer 141, and then a groove can be formed on the surface of the adhesive layer 142 by photolithography. The light-blocking material is then filled into the groove, and the light-blocking structure 13 is formed by curing. A photomask with continuous grayscale variation can be used, allowing different areas of the photoresist to receive different light energies. After development, continuously tilted sidewalls are formed to facilitate the subsequent formation of the tilted light-blocking structure 13.

[0100] Alternatively, a pre-made mold can be used to perform nano-imprinting on the surface of the adhesive layer 142, which facilitates the transfer of the light-blocking material to the adhesive layer 142.

[0101] In one example, such as Figure 12 As shown, the light-blocking structure 13 is disposed between the adhesive layer 142 and the encapsulation layer 141. Exemplarily, the light-blocking structure 13 is first fabricated on the upper surface of the encapsulation layer 141, and then the adhesive layer 142 is covered on the light-blocking structure 13.

[0102] In one example, the encapsulation layer 141 has a receiving groove along the thickness direction of the substrate 11, and at least a portion of the light-blocking structure 13 is located in the receiving groove. Exemplarily, after forming the encapsulation layer 141, grooves, i.e., receiving grooves, are formed on its surface by etching or imprinting processes. Subsequently, a light-blocking material is filled or patterned into these grooves. In this example, the top of the light-blocking structure 13 can be flush with the surface of the encapsulation layer 141, or it can be slightly raised, such as... Figure 3 As shown, no restrictions are imposed here. Figure 3 The mid-light-blocking structure 13 is a structure formed by the processes of this example and the previous example.

[0103] In one example, such as Figure 4 , Figure 10 , Figure 11 and Figure 14 As shown, the cover plate layer 143 has a receiving groove along the thickness direction of the substrate 11, and at least a portion of the light-blocking structure 13 is located in the receiving groove.

[0104] For example, a light-blocking structure 13 can be formed on the inner surface of the cover plate layer 143 by sputtering light-blocking material and etching process; or, during the manufacturing stage of the cover plate layer 143, a light-blocking structure 13 containing light-blocking material can be formed inside by mold hot pressing or laser engraving technology.

[0105] The method of providing the light-blocking structure 13 between or within the encapsulation layer 141, adhesive layer 142 and cover layer 143 is not limited to the above description. Any method that can form the light-blocking structure 13 in the protective layer 14 is included within the protection scope of this application.

[0106] In some embodiments, such as Figure 15 As shown, a portion of the light emitted by the light-emitting unit 12 has a critical angle of total internal reflection α at the interface of the protective layer 14 away from the substrate 11; at least a portion of the light-blocking structure 13 is disposed on the transmission path of the portion of the light with the critical angle of total internal reflection α.

[0107] For example, the critical angle α for total internal reflection can be determined to be 41.81° based on common sense physics. All light emitted from the light-emitting unit 12 that enters the interface at an angle greater than or equal to α will be totally reflected back into the display panel 10, thus constituting the main source of back light leakage.

[0108] Specifically, based on the design size of the light-transmitting area NA and the optical path, the theoretical propagation path of the total internal reflection light inside the protective layer 14 can be determined. In this embodiment, at least a portion of the light-blocking structure 13 can be placed in the spatial area through which the light passes.

[0109] This embodiment calculates and precisely places the limited light-blocking material in the most critical position, rather than simply setting up a blockage on the side of the light-emitting unit 12, thereby ensuring the maximum light-blocking efficiency.

[0110] In some embodiments, such as Figure 15 As shown, in the light-emitting unit 12, a light-emitting device 121 has a first height H along the thickness direction of the substrate 11 and a width W along the direction from the non-transparent area AA to the transparent area NA; and a light-blocking structure 13 has a second height H2 along the thickness direction of the substrate 11, the distance between the light-blocking structure 13 and the substrate 11 is H1, and the distance between the light-blocking structure 13 and the corresponding light-emitting device 121 is D; the light-blocking structure 13 satisfies: H2=H+W / tanα (1), H1=D / tanα (2).

[0111] It is understandable that, given that the light-emitting device 121 is located on the left side of the light-transmitting area NA, the light-blocking structure 13 needs to be sufficiently high to ensure that the light emitted from the farthest corner (upper left corner) of the top of the light-emitting device 121 is blocked from reaching the edge of the interface. Formula (1) ensures that the top of the light-blocking structure 13 is higher than the extension line of this light ray. At the same time, in order to ensure that the light emitted from the bottom of the light-emitting device 121 with a wide angle of view is blocked, the bottom of the light-blocking structure 13 should not be too high. Formula (2) ensures that the light emitted from the bottom of the light-emitting device 121 is just intercepted by the bottom edge of the light-blocking structure 13.

[0112] Specifically, during the design of the display panel 10, the target values ​​of H1 and H2 can be calculated based on the known dimensions (H, W) of the light-emitting device 121, the process-achievable spacing D, and the material refractive index α. This quantitative design method helps ensure the theoretical feasibility of the light-blocking structure 13, thereby improving the consistency and predictability of the product's optical performance.

[0113] In some embodiments, such as Figure 6 and Figure 8 As shown, the substrate 11 includes a plurality of light-emitting units 12 arranged along at least one of rows and columns, and each light-emitting unit 12 includes a plurality of light-emitting devices 121; there is at least a partially transparent region NA between adjacent light-emitting units 12.

[0114] For example, each light-emitting unit 12 can be understood as an independent full-color pixel or pixel group, and multiple light-emitting units 12 are regularly arranged in a matrix on the transparent substrate 11. The arrangement direction includes an array formed by row direction, column direction, or both row and column directions. In one example, each light-emitting unit 12 integrates multiple light-emitting devices 121, typically including at least sub-pixel devices for emitting red, green, and blue light to mix and generate a full-color display.

[0115] In one example, adjacent light-emitting units 12 are not tightly connected in the row and / or column directions, but are designed with physical gaps between them. These gap areas form a light-transmitting area NA, thus creating a visual channel for the user to view the background.

[0116] In some embodiments, such as Figure 5 and Figure 6 As shown, a continuous light-blocking structure 13 is provided on the outer periphery of the same light-emitting unit 12, and the light-blocking structure 13 is ring-shaped when projected onto the substrate 11. Exemplarily, each light-emitting unit 12 is provided with a continuous light-blocking dam. When projected along the thickness direction of the substrate 11, the light-blocking structure 13 forms a closed loop, such as a rectangular frame, a circular ring, or a ring shape matching the pixel shape, to surround the light-emitting unit 12. This design facilitates the one-time formation of the ring-shaped light-blocking structure 13 around the light-emitting unit 12, which helps reduce manufacturing steps and improves fabrication efficiency.

[0117] In some embodiments, the light-emitting unit 12 includes one of a micro light-emitting diode, an organic light-emitting diode, and a quantum dot light-emitting diode.

[0118] For example, the micro light-emitting diode is an LED with a chip size of less than 100 micrometers, which can be integrated onto the substrate 11 by mass transfer technology. A single light-emitting unit 12 can be composed of three Micro-LED chips: R, G, and B, but there are no specific limitations.

[0119] In some embodiments, the material of the light-blocking structure 13 includes at least one of resin-based composite materials, carbon black, metal oxides, and gold-black photoresist.

[0120] For example, a light-absorbing filler (such as carbon black or black pigment) is uniformly dispersed in a high proportion using a transparent resin (e.g., epoxy resin, acrylic resin, or polyimide) as the matrix, and then cured by photocuring or thermocuring to form a light-blocking structure 13. Of course, the material of the light-blocking structure 13 is not limited here, as long as it can block (absorb) the propagation of light.

[0121] Based on the same concept, this application also provides a display device. Figure 16 This is a schematic diagram of the structure of the display device 20 provided in the embodiments of this application, as shown below. Figure 16 As shown, the display device 20 includes the display panel 10 in any of the above embodiments. Exemplarily, as... Figure 16 As shown, the display device 20 includes a display panel 10. Therefore, the display device 20 also has the beneficial effects of the display panel 10 in the above embodiments. The similarities can be understood with reference to the explanation of the display panel 10 above, and will not be repeated below.

[0122] The display device 20 provided in this embodiment can be a display device 20 that can be Figure 16 The mobile phone shown can also be any electronic product with display function, including but not limited to the following categories: transparent TV, transparent laptop, desktop monitor, commercial display transparent display, tablet computer, digital camera, smart bracelet, smart glasses, vehicle display, industrial control equipment, medical display screen, touch interactive terminal, etc. This application embodiment does not make any special limitation in this regard.

[0123] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0124] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A display panel, characterized in that, The display panel includes a light-transmitting area and a non-light-transmitting area, wherein the non-light-transmitting area is located on at least one side of the light-transmitting area; the display panel includes: A substrate is provided at least in the non-transparent area; The light-emitting unit is disposed on one side of the substrate and located in the non-transparent area; At least one light-blocking structure is disposed on the side of the substrate facing the light-emitting unit, and the distance between the light-blocking structure and the substrate on the side facing away from the substrate is greater than the distance between the light-emitting unit and the substrate on the side facing away from the substrate; the orthogonal projection of the light-blocking structure on the substrate is at least partially located on the side of the light-emitting unit facing the light-transmitting area. And / or, the light-emitting unit includes a plurality of light-emitting devices, and the light-blocking structure is disposed between at least two adjacent light-emitting devices among the plurality of light-emitting devices; And / or, the light-blocking structure is disposed on opposite sides of the light-emitting unit.

2. The display panel according to claim 1, characterized in that, Along the direction from the non-transparent area to the transparent area, the orthographic projection of the light-blocking structure overlaps with the orthographic projection of the light-emitting unit.

3. The display panel according to claim 1, characterized in that, The light-blocking structure includes a first end close to the substrate and a second end away from the substrate, wherein the direction from the first end to the second end is parallel to the thickness direction of the substrate.

4. The display panel according to claim 1, characterized in that, The light-blocking structure includes a first end close to the substrate and a second end away from the substrate, wherein the direction from the first end to the second end intersects the thickness direction of the substrate at an angle.

5. The display panel according to claim 4, characterized in that, Along the direction from the non-transparent area to the transparent area, the distance between the second end of the light-blocking structure and the transparent area is less than the distance between the first end of the light-blocking structure and the transparent area.

6. The display panel according to claim 4, characterized in that, The light-blocking structure is tilted towards the human eye from the direction from the second end to the first end.

7. The display panel according to claim 1, characterized in that, The light-blocking structures located on opposite sides of the light-emitting unit are inclined relative to the thickness direction of the substrate, and the inclination directions are the same.

8. The display panel according to claim 1, characterized in that, The light-blocking structure includes a first light-blocking part and a second light-blocking part, which are located on opposite sides of the light-emitting unit along a first direction. The first light-blocking part extends in a direction away from the substrate and the second light-blocking part extends in a direction away from the substrate. The first direction is the direction from the non-transparent area to the transparent area.

9. The display panel according to claim 1, characterized in that, The display panel includes multiple light-emitting units, and there is at least a portion of the light-transmitting area between adjacent light-emitting units; each light-emitting unit includes multiple light-emitting devices.

10. The display panel according to claim 1, characterized in that, At least a portion of the area between the light-emitting unit and the light-transmitting area is provided with at least two layers of the light-blocking structure, and the at least two layers of the light-blocking structure are spaced apart along the direction from the non-light-transmitting area to the light-transmitting area.

11. The display panel according to claim 10, characterized in that, The distance between the end of the at least two light-blocking structures furthest from the substrate and the substrate gradually increases from the non-transparent area to the transparent area.

12. The display panel according to claim 1, characterized in that, The light-blocking structure includes a third light-blocking part and a fourth light-blocking part. The third light-blocking part is located in at least a portion of the area between the light-emitting unit and the light-transmitting area. The fourth light-blocking part is located in the remaining portion of the area between the light-emitting unit and the light-transmitting area. Alternatively, the fourth light-blocking part is located in the area between two adjacent light-emitting devices in the light-emitting unit. Along the direction from the non-transparent area to the transparent area, the size of the third light-blocking part is larger than the size of the fourth light-blocking part.

13. The display panel according to claim 1, characterized in that, The dimension of the light-blocking structure along the direction from the non-transparent area to the transparent area is smaller than the dimension of the light-blocking structure along the thickness direction of the substrate.

14. The display panel according to claim 1, characterized in that, The display panel further includes a protective layer, which is disposed on the side of the light-emitting unit away from the substrate; the protective layer is provided in both the light-transmitting area and the non-light-transmitting area. The light-blocking structure is disposed in the protective layer.

15. The display panel according to claim 14, characterized in that, The protective layer includes an encapsulation layer, an adhesive layer, and a cover layer stacked in a direction away from the substrate; The light-blocking structure is disposed between the substrate and the encapsulation layer; The light-blocking structure is disposed between the adhesive layer and the cover plate layer; Alternatively, the light-blocking structure may be disposed between the adhesive layer and the encapsulation layer; Alternatively, the cover plate layer has a receiving groove along the thickness direction of the substrate, and at least a portion of the light-blocking structure is located in the receiving groove; Alternatively, the encapsulation layer may have a receiving groove along the thickness direction of the substrate, and at least a portion of the light-blocking structure may be located in the receiving groove.

16. The display panel according to claim 14, characterized in that, The light emitted by the light-emitting unit is defined to have a critical angle of total internal reflection α at the interface of the protective layer away from the substrate; At least a portion of the light-blocking structure is disposed on the transmission path of a portion of the light rays having a critical angle of total internal reflection α.

17. The display panel according to claim 16, characterized in that, A light-emitting device in the light-emitting unit is defined to have a first height H along the thickness direction of the substrate and a width W along the direction from the non-transparent area to the transparent area; and a light-blocking structure has a second height H2 along the thickness direction of the substrate, the distance between the light-blocking structure and the substrate is H1, and the distance between the light-blocking structure and the corresponding light-emitting device is D; the light-blocking structure satisfies: H2 = H + W / tanα, H1 = D / tanα.

18. The display panel according to claim 1, characterized in that, The substrate includes a plurality of light-emitting units arranged along at least one of rows and columns, and the light-emitting unit includes a plurality of light-emitting devices; There is at least a portion of the light-transmitting area between adjacent light-emitting units.

19. The display panel according to claim 18, characterized in that, The outer periphery of the same light-emitting unit is provided with a continuous light-blocking structure, and the light-blocking structure is ring-shaped when projected onto the substrate.

20. The display panel according to claim 1, characterized in that, The light-emitting unit includes one of a micro light-emitting diode, an organic light-emitting diode, and a quantum dot light-emitting diode; And / or, the material of the light-blocking structure includes at least one of resin-based composite materials, carbon black, metal oxides, and gold-black photoresist.

21. A display device, characterized in that, Includes the display panel as claimed in any one of claims 1 to 20.

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