Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device. The display panel comprises a first kind of light-emitting devices, a second kind of light-emitting devices and a black adhesive layer. The black adhesive layer is located on the side, facing the light-emitting face of the display panel, of the light-emitting device and at least comprises a first opening and a second opening. The first-type light-emitting device is overlapped with the first opening, and the second-type light-emitting device is overlapped with the second opening. The display panel is arranged in the first direction, and the width of the first opening is smaller than that of the second opening, so that the light-emitting area of the first type of light-emitting devices is smaller than that of the second type of light-emitting devices, and narrow-view-angle light emitting or specific-angle light emitting of the display panel is facilitated. Moreover, the original black adhesive layer of the display panel is utilized to realize narrow-viewing-angle light emission of the display panel, so that additional preparation of other film layers or structures is avoided, the thickness of the film layer of the peep-proof display panel is reduced, and the peep-proof display panel is light and thin.

Description

Technical Field

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

[0002] In display panel applications, privacy-preventing display panels are widely used in mobile phones and in-vehicle displays due to privacy and security considerations. Improving the performance of privacy-preventing display panels is crucial for protecting privacy, preventing light scattering during driving, and improving driving safety. Summary of the Invention

[0003] In view of this, the present application provides a display panel and a display device to solve the above problems.

[0004] In a first aspect, an embodiment of the present application provides a display panel, comprising:

[0005] A substrate; a light-emitting device, the light-emitting device being located on one side of the substrate, and comprising a first type of light-emitting device and a second type of light-emitting device; a black resin layer, the black resin layer being located on a side of the light-emitting device facing a light-emitting surface of the display panel, and comprising at least a first opening and a second opening; the first type of light-emitting device overlapping with the first opening, and the second type of light-emitting device overlapping with the second opening;

[0006] In the first direction, the width of the first opening is smaller than the width of the second opening; and the first direction is parallel to the plane where the display panel is located.

[0007] In a second aspect, an embodiment of the present application provides a display device, comprising the display panel provided in the first aspect.

[0008] In the embodiment of the present application, the width of the first opening in the first direction is smaller than the width of the second opening, and the width of the openings in the black plastic layer is differentiated, so that the light output area of the first type of light-emitting device is smaller than the light output area of the second type of light-emitting device, which is beneficial for the display panel to achieve narrow viewing angle light emission or light emission at a specific angle. In addition, in the related art, lenses and other methods are generally used to change the light output path to achieve the purpose of narrow viewing angle light emission. In the embodiment of the present application, the original black plastic layer of the display panel is used to achieve the narrow viewing angle light emission of the display panel, which is beneficial to avoid the need for additional film layers or structures, and is beneficial to reducing the process flow and production cost of the display panel. It is also beneficial to reduce the film thickness of the anti-peeping display panel, making the anti-peeping display panel both light and thin. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0010] Figure 1 A schematic plan view of a display panel provided in an embodiment of the present application;

[0011] Figure 2 A method provided in the embodiment of this application Figure 1 Schematic diagram of the cross section along the A-A' direction;

[0012] Figure 3 A method provided in the embodiment of this application Figure 1 Schematic plan view of the middle area E1;

[0013] Figure 4 A schematic plan view of another display panel according to an embodiment of the present application;

[0014] Figure 5 A method provided in the embodiment of this application Figure 4 Schematic diagram of the cross section along the B-B' direction;

[0015] Figure 6 A schematic plan view of another display panel provided in an embodiment of the present application;

[0016] Figure 7 A method provided in the embodiment of this application Figure 6 Schematic diagram of the cross section along the C-C' direction;

[0017] Figure 8 A schematic plan view of another display panel provided in an embodiment of the present application;

[0018] Figure 9 A method provided in the embodiment of this application Figure 8 Schematic diagram of the cross section along the D-D' direction;

[0019] Figure 10 A schematic plan view of another display panel provided in an embodiment of the present application;

[0020] Figure 11 A method provided in the embodiment of this application Figure 10 Schematic diagram of the cross section along E-E';

[0021] Figure 12 A schematic plan view of another display panel provided in an embodiment of the present application;

[0022] Figure 13A method provided in the embodiment of this application Figure 12 Schematic diagram of the cross section along the F-F' direction;

[0023] Figure 14 A schematic plan view of another display panel provided in an embodiment of the present application;

[0024] Figure 15 A method provided in the embodiment of this application Figure 14 Schematic diagram of the cross section along the G-G' direction;

[0025] Figure 16 A schematic diagram of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0027] It should be clear that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0028] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a," "an," and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0029] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0030] In the description of this specification, it is necessary to understand that the words "substantially", "approximately", "approximately", "about", "roughly", "generally" and the like described in the claims and embodiments of this application refer to what can be generally recognized within a reasonable process operation range or tolerance range, rather than an exact value.

[0031] It should be understood that although the terms first, second, etc. may be used to describe openings, light-emitting devices, colors, etc. in the embodiments of the present application, these should not be limited to these terms. These terms are only used to distinguish openings, light-emitting devices, colors, etc. from each other. For example, without departing from the scope of the embodiments of the present application, the first opening may also be referred to as the second opening, and similarly, the second opening may also be referred to as the first opening. The applicant of this case has provided a solution to the problems existing in the prior art through careful and in-depth research.

[0032] Figure 1 A schematic plan view of a display panel provided in an embodiment of the present application is shown. Figure 2 A method provided in the embodiment of this application Figure 1 Schematic diagram of the cross section along the A-A' direction.

[0033] The embodiment of the present application provides a display panel 100, Figure 1 、 Figure 2 As shown, the display panel 100 includes a substrate 10, and various structural components in the display panel 100 can be prepared based on the substrate 10.

[0034] The display panel 100 also includes a light-emitting device 20, which is located on one side of the substrate 10. The light-emitting device 20 includes a first type light-emitting device 20A and a second type light-emitting device 20B. The display panel 100 also includes a vinyl layer 30, which is located on the side of the light-emitting device 20 facing the light-emitting surface of the display panel 100. The vinyl layer 30 is configured to include at least a first opening K1 and a second opening K2. The first type light-emitting device 20A overlaps the first opening K1, and the second type light-emitting device 20B overlaps the second opening K2.

[0035] In the related art, the black glue layer is located on the side of the light emitting device facing the light emitting surface of the display panel, which can be used to isolate the light emitted by two adjacent light emitting devices 20 to avoid light crosstalk. In the embodiment of the present application, the black glue layer 30 is used to prepare a display panel 100 with anti-peeping performance.

[0036] Continue to refer Figure 2 As shown, in the first direction X1, the width of the first opening K1 is set to be smaller than the width of the second opening K2, and the first direction X1 is parallel to the plane of the display panel 100. The area covered by the black glue layer 30 can block the passage of light. Setting the width of the first opening K1 in the first direction X1 to be smaller than the width of the second opening K2 is equivalent to using the black glue layer 30 to block the light output of a portion of the first type light-emitting device 20A, thereby reducing the light output area of the first type light-emitting device 20A. In the embodiment of the present application, the size of the second opening K2 is equal to the light output area of the second type light-emitting device 20B, and the black glue layer 30 does not block the light output area of the second type light-emitting device 20B.

[0037] It should be noted that the display panel 100 further includes a pixel circuit D1. The pixel circuit DL is located between the substrate 10 and the light emitting device 20. The pixel circuit DL generates a light emitting driving current to drive the light emitting device 20 to emit light. In the embodiment of the present application, one pixel circuit DL driving one light emitting device 20 to emit light is used as an example for explanation. Figure 2 As shown, the display panel 100 further includes a transparent adhesive layer D2 on the side of the black adhesive layer 30 away from the substrate 10, which can be used to flatten the film structure and allow light to escape smoothly. A cover plate D3 is also included on the side of the transparent adhesive layer D2 away from the substrate 10 to protect the panel from scratches.

[0038] In the embodiment of the present application, the width of the first opening K1, which is set in the first direction X1, is smaller than the width of the second opening K2. The width of the openings in the black plastic layer 30 is differentiated, so that the light output area of the first type of light-emitting device 20A is smaller than the light output area of the second type of light-emitting device 20B. This facilitates the display panel 100 to achieve narrow viewing angle light emission or light emission at a specific angle. In addition, in the related art, lenses and other methods are generally used to change the light output path to achieve the purpose of narrow viewing angle light emission. In the embodiment of the present application, the original black plastic layer 30 of the display panel 100 is used to achieve the narrow viewing angle light emission of the display panel 100. This avoids the need to prepare additional film layers or structures, reduces the process flow and production cost of the display panel 100, and reduces the film thickness of the anti-peeping display panel, making the anti-peeping display panel 100 both light and thin.

[0039] Figure 3 A method provided in the embodiment of this application Figure 1 Schematic plan view of the middle area E1.

[0040] In one embodiment of the present application, Figure 1 、 Figure 3 As shown, along a direction parallel to the plane where the display panel 100 is located, the first type light emitting device 20A includes a first area 201 and a second area 202 , and the second area 202 at least partially surrounds the first area 201 .

[0041] In a direction perpendicular to the plane of the display panel 100, the first area 201 overlaps with the first opening K1, and the second area 202 overlaps with at least a portion of the black plastic layer 30. Thus, when light from the second area 202 is emitted toward the light-emitting surface of the display panel 100, it is partially blocked by the black plastic layer 30, so that light from the first-type light-emitting device 20A can be emitted from the first area 201, while no light is emitted from the second area 202.

[0042] In the embodiment of the present application, at least a portion of the black plastic layer 30 overlaps the second region 202 of the first-type light-emitting device 20A, with the second region 202 surrounding the first region 201. It will be appreciated that the majority of light emitted from the second region 202 of the first-type light-emitting device 20A is emitted toward the surrounding area at a wide viewing angle. Blocking the light emitted from the second region 202 allows the first-type light-emitting device 20A to emit light at a narrow viewing angle. When the first-type light-emitting device 20A in the display panel 100 is operating and the second-type light-emitting device 20B is not operating, the display content of the display panel 100 is difficult to observe at wide viewing angles, thereby achieving anti-peeping performance for the display panel 100.

[0043] In one embodiment of the present application, continue to refer to Figure 1-Figure 2 As shown, along the first direction X1 , the width of the first opening K1 is D1 , and the width of the first type light emitting device 20A is D2 .

[0044] In the embodiment of the present application, the width D1 of the first opening K1 is set within the range of 0<D1≤(2 / 3)D2. The width D1 of the first opening K1 in the first direction X1 is set to be at least greater than 0, which can ensure that the light emitted by the first type light-emitting device 20A is not completely blocked by the black glue layer 30, thereby ensuring the light emission performance of the first type light-emitting device 20A. The width D1 of the first opening K1 in the first direction X1 is set to be less than or equal to (2 / 3)D2, which can ensure that the width of the first opening K1 in the first direction X1 is smaller than that of the first type light-emitting device 20A. In addition, the wide-angle light emitted by the light-emitting device 20 is mainly located in the area near the edge of the light-emitting device 20, so that the first opening K1 blocks the second area 202 of the first type light-emitting device 20A and ensures that the width of the blocked second area 202 is not too small, which is conducive to ensuring that the first opening K1 and the black glue layer 30 are used to reduce the light emission angle of the first type light-emitting device 20A, thereby realizing that the display panel 100 has anti-peeping performance.

[0045] In one embodiment of the present application, the first type light emitting device 20A is adjacent to the second type light emitting device 20B in a direction parallel to the plane of the display panel 100 , and the distance between two adjacent first type light emitting devices 20A and second type light emitting devices 20B is greater than or equal to 10 μm.

[0046] In combination with the above content, it can be seen that in the embodiment of the present application, the second opening K2 does not block the light output of the second type light-emitting device 20B as an example. The second type light-emitting device 20B here can emit light with a large viewing angle. It should be supplemented that the first type light-emitting device 20A and the second type light-emitting device 20B provided in the embodiment of the present application do not work at the same time. Optionally, when the display panel 100 requires anti-peeping performance to protect privacy or safe driving, the first type light-emitting device 20A can be set to work and the second type light-emitting device 20B can be set not to work. When the display panel 100 does not require anti-peeping performance, the first type light-emitting device 20A and the second type light-emitting device 20B can be set to work, or only the second type light-emitting device 20B can be set to work.

[0047] In an embodiment of the present application, a first type of light-emitting device 20A capable of emitting light at a narrow viewing angle and a second type of light-emitting device 20B capable of emitting light at a wide viewing angle are prepared adjacent to each other, which is beneficial for more uniform preparation of the first type of light-emitting device 20A and the second type of light-emitting device 20B in the display panel 100, thereby improving the uniform display performance of the display panel 100.

[0048] When the display panel 100 requires privacy protection, the first-type light-emitting device 20A operates. Due to factors such as light refraction and reflection, the light emitted by the first-type light-emitting device 20A may be emitted along the side facing the second-type light-emitting device 20B. Consequently, some light may be emitted from the second opening K2. The second opening K2 is wider than the first opening K1, and allows light to be emitted from the second opening K2 at a wide viewing angle. When the first-type light-emitting device 20A and the second-type light-emitting device 20B are positioned close together, the risk of this issue occurring is greater, compromising the privacy protection performance of the display panel 100. Therefore, in the embodiment of the present application, a distance between two adjacent first-type light-emitting devices 20A and second-type light-emitting devices 20B is set to be greater than or equal to 10 μm, which is beneficial to reducing the risk that the first-type light-emitting device 20A can smoothly emit light from the second opening K2 after emitting light toward the adjacent second-type light-emitting device 20B, thereby ensuring that as much light as possible from the first-type light-emitting device 20A is emitted from the first opening K1, thereby improving the anti-peep reliability of the display panel 100.

[0049] In one embodiment of the present application, continue to refer to Figure 1 、 Figure 2As shown, along a direction parallel to the plane of the display panel 100, the first type of light-emitting device 20A and the second type of light-emitting device 20B are adjacent. The display panel 100 also includes a first transparent protective layer 40, which is located between the light-emitting device 20 and the black glue layer 30. The first transparent protective layer 40 may include a transparent glue material and can be used to flatten the film layer where the light-emitting device 20 is located, thereby improving the surface flatness of the display panel 100. Furthermore, after the first type of transparent protective layer 40 flattens the film layer where the light-emitting device 20 is located, it also provides structural support for the preparation of the black glue layer 30.

[0050] In the embodiment of the present application, the distance between the surface of the black glue layer 30 facing the light-emitting device 20 and the surface of the light-emitting device 20 facing the black glue layer 30 is set to be less than or equal to the height of the light-emitting device 20. The first transparent glue layer 40 is formed on the surface of the black glue layer 30 facing the light-emitting device 20 and the portion between the light-emitting device 20 facing the black glue layer 30. In other words, the height of the first transparent glue layer 40 in this portion is less than or equal to the height of the light-emitting device 20. Given the structural positions of the first transparent layer 40 and the black glue layer 30, the light generated by the light-emitting device 20 will first pass through the first transparent protective layer 40 before being emitted from the opening in the black glue layer 30. The first transparent protective layer 40 has a fully transparent structure. In other words, the portion of the first transparent protective layer 40 included between two adjacent first-type light-emitting devices 20A and second-type light-emitting devices 20B has no blocking effect on light emitted from a wide viewing angle. Therefore, by providing a first transparent layer 40 located on the surface of the light-emitting device 20 facing the vinyl layer 30 and on the surface of the vinyl layer 30 facing the light-emitting device 20 with a height less than or equal to the height of the light-emitting device 20, the distance and space that light emitted by the light-emitting device 20 travels through the first transparent layer 40 can be reduced, allowing the light emitted by the light-emitting device 20 to reach the vinyl layer 30 more quickly. This helps reduce the amount of light generated by the first-type light-emitting device 20A during operation that is scattered onto the adjacent second-type light-emitting device 20B, thereby preventing some of the light from the first-type light-emitting device 20A from being emitted from the second opening K2, which emits light at a wide viewing angle and thus negatively impacting the privacy protection performance of the display panel 100. Furthermore, this helps reduce the amount of light generated by the second-type light-emitting device 20B during operation that is scattered onto the adjacent first-type light-emitting device 20A, thereby preventing some of the light from the second-type light-emitting device 20B from being emitted from the first opening K1, which emits light at a narrow viewing angle and thus negatively impacting the display quality when the display panel 100 is in non-privacy mode.

[0051] Figure 4 This is a schematic plan view of another display panel improved in accordance with an embodiment of the present application. Figure 5 A method provided in the embodiment of this application Figure 5 Schematic diagram of the cross section along the B-B' direction, Figure 6A schematic plan view of another display panel provided in an embodiment of the present application is shown. Figure 7 A method provided in the embodiment of this application Figure 6 Schematic diagram of the cross section along the C-C' direction, Figure 8 A schematic plan view of another display panel provided in an embodiment of the present application is shown. Figure 9 A method provided in the embodiment of this application Figure 8 Schematic diagram of the cross section along the D-D' direction.

[0052] In one embodiment of the present application, Figure 4 、 Figure 5 As shown, the first-type light-emitting devices 20A and the second-type light-emitting devices 20B in the display panel 100 each include at least a first-color light-emitting device 20C1 and a second-color light-emitting device 20C2. In combination with the above, the first-type light-emitting devices 20A are light-emitting devices 20 capable of emitting light at a narrow viewing angle, while the second-type light-emitting devices 20B are light-emitting devices 20 capable of emitting light at a wide viewing angle. Both the first-type light-emitting devices 20A and the second-type light-emitting devices 20B include first-color light-emitting devices 20C1 and second-color light-emitting devices 20C2 of different colors. This helps ensure that when the display panel 100 operates in either privacy mode or non-privacy mode, the light-emitting devices of different colors cooperate to emit light, allowing the display panel 100 to display images normally in different modes.

[0053] In the examples of this application, continue to refer to Figure 4 、 Figure 5As shown, the first openings K1 corresponding to the first-color light-emitting devices 20C1 and the second-color light-emitting devices 20C2 in the first type of light-emitting devices 20A have different widths in the first direction X1. The second openings K2 corresponding to the first-color light-emitting devices 20C1 and the second-color light-emitting devices 20C2 in the second type of light-emitting devices 20B have the same width in the first direction X1. The first-color light-emitting devices 20C1 and the second-color reflective devices 20C2 emit different colors. In some cases, the light extraction efficiency or light output amount of the light-emitting devices 20 of different colors may differ. For example, the light extraction efficiency of the first-color light-emitting device 20C1 is greater than that of the second-color light-emitting device 20C2. It can be understood that the light generated by the first-color light-emitting device 20C1 with a greater light output amount or light extraction efficiency is easier for the human eye to observe, and therefore, the light emitted by the first-color light-emitting device 20C1 is easier to capture when viewed from a wide angle. At this time, in order to reduce the amount of light emitted by the first-color light-emitting device 20C1 in the first-type light-emitting device 20A that is scattered into a wide viewing angle range, the width of the first opening K1 corresponding to the first-color light-emitting device 20C1 in the first direction X1 can be further reduced compared to the second-color light-emitting device 20C2. This further reduces the amount of light emitted by the first-type light-emitting device 20A into a wide viewing angle range when the first-type light-emitting device 20A is in operation, thereby further improving the privacy protection performance of the display panel 100. In summary, according to the operating characteristics of the different-color light-emitting devices 20 in the display panel 100, the width of the corresponding first opening K1 in the first direction X1 is specifically set, which facilitates more precise adjustment of the light emission angle range of the first-type light-emitting device 20A and improves the privacy protection performance of the display panel 100.

[0054] Or, combined Figure 6 、 Figure 7As shown, the second openings K2 corresponding to the first-color light-emitting devices 20C1 and the second-color light-emitting devices 20C2 in the second type of light-emitting devices 20B have different widths in the first direction X1. The first openings K1 corresponding to the first-color light-emitting devices 20C1 and the second-color light-emitting devices 20C2 in the first type of light-emitting devices 20A have the same width in the first direction X1. The first-color light-emitting devices 20C1 and the second-color reflective devices 20C2 emit different colors. In some cases, the light extraction efficiencies or light output amounts of the light-emitting devices 20 of different colors may differ. For example, the light extraction efficiency of the first-color light-emitting device 20C1 is greater than that of the second-color light-emitting device 20C2. Similarly, the light emitted by the first-color light-emitting device 20C1 with a greater light output amount or light extraction efficiency is easier for the human eye to perceive. Therefore, the light emitted by the first-color light-emitting device 20C1 is also easier to detect when viewed from a wide viewing angle. In this case, color shift is likely to occur when the display panel 100 is viewed from a wide viewing angle, resulting in poor visual quality for the display panel 100. At this time, to improve the color shift effect of the display panel 100, the width of the second opening K2 corresponding to the first color light-emitting device 20C1 in the first direction X1 can be appropriately reduced compared to the width of the second opening K2 of the second color light-emitting device 20C1 in the second type of light-emitting device 20B. It should be noted that although the width of the second opening K2 corresponding to the first color light-emitting device 20C1 in the second type of light-emitting device 20B in the first direction X1 is reduced, it can still be set to be greater than the width of the first opening K1 corresponding to the first color light-emitting device 20C1 in the first type of light-emitting device 20A in the first direction X1. This can achieve a certain reduction in the amount of light emitted by the first color light-emitting device 20C1 in the second type of light-emitting device 20B within a wide viewing angle range, rather than almost eliminating the light emitted by the first color light-emitting device 20C1 in the second type of light-emitting device 20B within a wide viewing angle range. In summary, according to the operating characteristics of the light emitting devices 20 of different colors in the display panel 100 , the widths of the corresponding second openings K2 in the first direction X1 are specifically set, which is beneficial to improving the color shift phenomenon of the display panel 100 at a wide viewing angle.

[0055] Or, combined Figure 8 、 Figure 9As shown, the first openings K1 corresponding to the first color light-emitting devices 20C1 and the second color light-emitting devices 20C2 in the first type of light-emitting devices 20A are set to have different widths in the first direction X1, and the second openings K2 corresponding to the first color light-emitting devices 20C1 and the second color light-emitting devices 20C2 in the second type of light-emitting devices 20B are set to have different widths in the first direction X1. For example, based on the analysis described above, taking the example of the light extraction efficiency of the first color light-emitting devices 20C1 being greater than the light extraction efficiency of the second color light-emitting devices 20C2, the width of the first openings K1 corresponding to the first color light-emitting devices 20C1 in the first type of light-emitting devices 20A in the first direction X1 can be set to be smaller than the width of the first openings K1 corresponding to the second color light-emitting devices 20C2 in the first type of light-emitting devices 20A. This facilitates more precise adjustment of the light extraction angle range of the first type of light-emitting devices 20A, thereby improving the anti-peeping performance of the display panel 100. Furthermore, the width of the second opening K2 corresponding to the first color light-emitting device 20C1 in the second type of light-emitting device 20B in the first direction X1 is set to be smaller than the width of the second opening K2 corresponding to the second color light-emitting device 20C2. Alternatively, the width of the second opening K2 corresponding to the first color light-emitting device 20C1 in the second type of light-emitting device 20B is set to be between the width of the first opening K1 corresponding to the first color light-emitting device 20C1 in the first type of light-emitting device 20A in the first direction X1 and the width of the second opening K2 corresponding to the second color light-emitting device 20C2 in the second type of light-emitting device 20B in the first direction X1. This helps to improve the color shift phenomenon of the display panel 100 at a wide viewing angle while ensuring the display effect of the display panel 100 at a wide viewing angle.

[0056] In one embodiment of the present application, continue to refer to Figure 4-Figure 9 As shown, the first-color light-emitting device 20C1 is a red light-emitting device. In the present embodiment, taking the second-color light-emitting device 20B as an example, the light-emitting color is blue. Generally, the light-extraction efficiency of a red light-emitting device is greater than that of a blue light-emitting device. Analysis of the above embodiments reveals that this can easily lead to a red color shift when viewing the display panel 100 at wide viewing angles.

[0057] Therefore, in the embodiment of the present application, the width of the second opening K2 corresponding to the first color light-emitting device 20C1 in the second type of light-emitting device 20B in the first direction X1 is smaller than the width of the second opening K2 corresponding to the second color light-emitting device 20C2 in the first direction X1, which is beneficial to reducing the light output of the first color light-emitting device 20C1 in the second type of light-emitting device 20B at a wide viewing angle, thereby improving the color deviation phenomenon of the display panel 100 at a wide viewing angle.

[0058] Figure 10A schematic plan view of another display panel provided in an embodiment of the present application is shown. Figure 11 A method provided in the embodiment of this application Figure 10 Schematic diagram of the cross section along E-E'.

[0059] In one embodiment of the present application, Figure 10 、 Figure 11 As shown, the display panel 100 further includes a plurality of convex lenses 50, which are located on the side of the first type light-emitting device 20A away from the substrate 10, and the convex lenses 50 at least partially cover the first type light-emitting device 20A. Optionally, the film layer where the convex lenses 50 are located is located on the side of the black glue layer 30 away from the first type light-emitting device 20A. The convex lenses 50 have the ability to gather light, which is beneficial for allowing the light emitted by the first type light-emitting device 20A to pass through the first opening K1 of the black glue layer 30 and the convex lenses 50. The two functions of gathering light reduce the amount of light emitted at a wide viewing angle, which is beneficial for further reducing the amount of light emitted at a wide viewing angle when the first type light-emitting device 20A is working, thereby further ensuring the anti-peeping performance of the display panel 100.

[0060] Figure 12 A schematic plan view of another display panel provided in an embodiment of the present application is shown. Figure 13 A method provided in the embodiment of this application Figure 12 Schematic diagram of the cross section along the F-F' direction.

[0061] Combine Figure 12 、 Figure 13 As shown, in some other embodiments, the display panel 100 can be configured to achieve privacy protection by only covering the first type light-emitting device 10A with the convex lens 50. Optionally, the size of the first opening K1 and the second opening K2 provided in the black glue layer 30 is equal to the light-emitting area of the light-emitting device 20. In a direction perpendicular to the plane of the display panel 100, the area of the convex lens 50 in the direction of the substrate 10 is greater than or equal to the light-emitting area of the first type light-emitting device 20A. This ensures that the convex lens 50 can achieve a light-gathering effect on the first type light-emitting device 20A, thereby achieving privacy protection for the display panel 100.

[0062] Figure 14 A schematic plan view of another display panel provided in an embodiment of the present application is shown. Figure 15 A method provided in the embodiment of this application Figure 14 Schematic diagram of the cross section along the G-G' direction.

[0063] In one embodiment of the present application, continue to refer to Figure 14 、 Figure 15As shown, the convex lens 50 overlaps the first opening K1 in a direction perpendicular to the plane of the display panel 100. Optionally, the convex lens 50 can have a surface facing the vinyl layer 30 that is the same shape as the first opening K1, while the portion facing away from the vinyl layer 30 is a raised structure. Most of the light emitted by the first-type light-emitting device 20A can pass through the convex lens 50 and the first opening K1, thereby further converging the light emitted at the first opening K1 by the convex lens 50, further reducing the amount of light emitted by the first-type light-emitting device 20A at wide viewing angles and improving the reliability of the anti-peeping performance of the display panel 100.

[0064] In one embodiment of the present application, continue to refer to Figure 14 、 Figure 15 As shown, the convex lens 50 is arranged to be located in the black glue layer 30, and the convex lens 50 is located in the first opening K1, which is beneficial to ensure that most of the light emitted by the first type light-emitting device 20A can be gathered by the first opening K1 and the convex lens 50 at the same time and then emitted, and the convex lens 50 is arranged to be located in the first opening K1' of the black glue layer 30, which is beneficial for the convex lens 50 and the black glue layer 30 to share a film layer, thereby reducing the film thickness of the display panel 100 when preparing the convex lens 50, and improving the lightness and thinness of the display panel 100.

[0065] In one embodiment of the present application, continue to refer to Figure 1 、 Figure 2 As shown, along the first direction X1, the width of the second opening K2 is greater than or equal to the width of the second type of light-emitting device 20B, which is beneficial to ensuring the display effect of the display panel 100 when the display panel 100 uses the second type of light-emitting device 20B to emit light in a non-privacy mode, so that the display panel 100 has normal visual effects under multiple viewing angles.

[0066] In one embodiment of the present application, the display panel 100 includes a privacy mode M1 and a sharing mode M2. The privacy mode M1 can be a usage mode in which the image content displayed by the display panel 100 is not easily observed at a wide viewing angle, and can be applied in the field of mobile phone use or driving. For example, in the field of driving, the image displayed on the display screen at the co-pilot position is easily scattered to the main driving position, which is not good for driving safety. Therefore, it is possible to choose to turn on the privacy mode M1 of the display panel 100 at the co-pilot position during driving, so that the light emitted by the display panel 100 at the co-pilot position is narrow-viewing angle light, thereby avoiding the display light affecting the main driving position. When not driving, the display panel 100 can be switched to the sharing mode M2, so that the light emitted by the display panel 100 is wide-viewing angle light, so that people's eyes at different positions can smoothly view the display content of the display panel 100.

[0067] In privacy mode M1, the first-type light-emitting devices 20A emit light and the second-type light-emitting devices 20B do not, achieving a narrow viewing angle for light emission from the display panel 100. In sharing mode M2, the second-type light-emitting devices 20B emit light and the first-type light-emitting devices 20A do not, achieving a wide viewing angle for light emission from the display panel 100. The display panel 100 provided in the embodiments of the present application can switch between privacy mode M1 and sharing mode M2, thereby better adapting the display panel 100 to different application scenarios.

[0068] Figure 16 A schematic diagram of a display device provided in an embodiment of the present application.

[0069] The embodiment of the present application provides a display device 200, such as Figure 16 As shown, the display device 200 includes the display panel 100 provided in the above embodiment. Optionally, the display device 200 can be a device for display such as a mobile phone, a computer, or a car display screen.

[0070] In the display device 200, the width of the first opening K1, set in the first direction X1, is smaller than the width of the second opening K2. The width of the openings in the black plastic layer 30 is differentiated, so that the light-emitting area of the first type of light-emitting device 20A is smaller than the light-emitting area of the second type of light-emitting device 20B. This facilitates the display panel 100 to achieve narrow-viewing angle light emission or light emission at a specific angle. Furthermore, in the related art, lenses or other methods are generally used to change the light-emitting path to achieve the purpose of narrow-viewing angle light emission. The embodiment of the present application utilizes the original black plastic layer 30 of the display panel 100 to achieve narrow-viewing angle light emission of the display panel 100, which avoids the need for additional film layers or structures, reduces the process flow and production cost of the display panel 100, and reduces the film thickness of the anti-peeping display panel, making the anti-peeping display panel 100 both light-weight and thin.

[0071] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A display panel, characterized in that: include: substrate; A light-emitting device, the light-emitting device is located on one side of the substrate, and the light-emitting device includes a first type of light-emitting device and a second type of light-emitting device; a black glue layer, the black glue layer being located on a side of the light-emitting device facing a light-emitting surface of the display panel, the black glue layer comprising at least a first opening and a second opening; the first type of light-emitting device overlapping with the first opening, and the second type of light-emitting device overlapping with the second opening; Wherein, in a first direction, the width of the first opening is smaller than the width of the second opening; and the first direction is parallel to the plane where the display panel is located.

2. The display panel according to claim 1, wherein: Along a direction parallel to the plane where the display panel is located, the first type of light-emitting device includes a first area and a second area, and the second area at least partially surrounds the first area; Wherein, along a direction perpendicular to the plane where the display panel is located, the first area overlaps with the first opening, and the second area overlaps with at least a portion of the black glue layer.

3. The display panel according to claim 2, wherein: Along the first direction, the width of the first opening is D1, and the width of the first type of light emitting device is D2; 0<D1≤(2 / 3)D2.

4. The display panel according to claim 1, wherein: Along a direction parallel to the plane where the display panel is located, the first type of light emitting device is adjacent to the second type of light emitting device, and a distance between two adjacent first type of light emitting devices and second type of light emitting devices is greater than or equal to 10 μm.

5. The display panel according to claim 1, wherein: Along a direction parallel to the plane of the display panel, the first type of light emitting device is adjacent to the second type of light emitting device; the display panel further includes a first transparent protective layer, which is located between the light emitting device and the black glue layer; Wherein, the distance between the surface of the black glue layer facing the light-emitting device and the surface of the light-emitting device facing the black glue layer is less than or equal to the height of the light-emitting device.

6. The display panel according to claim 1, wherein: The first type of light emitting devices and the second type of light emitting devices both include at least a first color light emitting device and a second color light emitting device; The first openings corresponding to the first color light-emitting devices and the second color light-emitting devices in the first category of light-emitting devices have different widths in the first direction, and / or the second openings corresponding to the first color light-emitting devices and the second color light-emitting devices in the second category of light-emitting devices have different widths in the first direction.

7. The display panel according to claim 6, wherein: The first color light-emitting device is a red light-emitting device; wherein the width of the second opening corresponding to the first color light-emitting device in the second type of light-emitting devices in the first direction is smaller than the width of the second opening corresponding to the second color light-emitting device in the first direction.

8. The display panel according to claim 1, wherein: The display panel further includes a plurality of convex lenses, wherein the convex lenses are located on a side of the first type of light emitting device away from the substrate, and the convex lenses at least partially cover the first type of light emitting device.

9. The display panel according to claim 8, wherein: Along a direction perpendicular to the plane where the display panel is located, the convex lens overlaps with the first opening.

10. The display panel according to claim 9, wherein: The convex lens is located on the black glue layer, and the convex lens is located in the first opening.

11. The display panel according to claim 1, wherein Along the first direction, the width of the second opening is greater than or equal to the width of the second type of light emitting device.

12. The display panel according to claim 1, wherein The display panel includes a privacy mode and a sharing mode. In the privacy mode, the first type of light emitting devices emit light and the second type of light emitting devices do not emit light. In the sharing mode, the second type of light emitting devices emit light and the first type of light emitting devices do not emit light.

13. A display device, characterized in that: The device comprises the display panel as claimed in claims 1 to 12.

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