Display panel and driving method therefor, and display apparatus

Abstract

The present invention relates to the field of display. Provided in embodiments are a display panel and a driving method therefor, and a display apparatus, which are used to optimize the structure of the display panel while enabling the display panel to implement an anti-peeping function. The display panel comprises a first light-emitting element and a second light-emitting element disposed adjacent to one another. The maximum light-emitting angle of the second light-emitting element is smaller than the maximum light-emitting angle of the first light-emitting element. The display panel has a first display mode and a second display mode. In the first display mode, the first light-emitting element and the second light-emitting element are in the same light emission state. In the second display mode, the first light-emitting element and the second light-emitting element are in different light emission states.

Description

Display panel and its driving method, display device

[0001] This invention claims priority to Chinese Patent Application No. 202411011904.4, filed with the State Intellectual Property Office of China on July 25, 2024, entitled “Display Panel and Driving Method Thereof, Display Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of display technology, and in particular to a display panel and its driving method, and a display device. Background Technology

[0003] Currently, privacy screens are being used in an increasing number of scenarios. For example, during vehicle operation, the passenger-side screen can easily attract the driver's attention, potentially leading to traffic accidents. Therefore, privacy screens need to be designed to reduce their impact on the driver.

[0004] In display devices, a privacy film is typically attached to the cover plate to achieve privacy functionality. The principle behind this film is to reduce the distance between the slats of a venetian blind in a specific pattern, creating an ultra-fine slat layer. This ensures that light at a direct viewing angle is blocked only by the narrowest area of ​​the slats. This results in the highest light transmittance and strongest visibility when viewed directly. As the viewing angle increases, the area blocked by the slats increases, and the visible light transmittance decreases, causing the screen to gradually darken. When the angle is tilted to a certain degree, the screen darkens to the point where the viewer cannot see any content, thus achieving a privacy effect at wide viewing angles.

[0005] However, this type of external privacy screen protector has a complex structure, requiring multiple layers such as a privacy screen protector layer, a PET layer, an AG hardening layer, and a PE protective film layer to be stacked. This not only significantly increases the manufacturing cost of the display device, but also hinders the design of the display device to be thinner and lighter.

[0006] Summary of the Invention

[0007] This invention provides a display panel and its driving method and display device, which optimize the structure of the display panel while enabling the display panel to achieve privacy protection.

[0008] In a first aspect, embodiments of the present invention provide a display panel, including a first light-emitting element and a second light-emitting element disposed adjacent to each other, wherein the maximum light emission angle of the second light-emitting element is smaller than the maximum light emission angle of the first light-emitting element;

[0009] The display panel has a first display mode and a second display mode;

[0010] In the first display mode, the first light-emitting element and the second light-emitting element have the same light-emitting state;

[0011] In the second display mode, the first light-emitting element and the second light-emitting element emit light in different states.

[0012] Secondly, based on the same inventive concept, embodiments of the present invention also provide a method for driving a display panel.

[0013] The display panel includes a first light-emitting element and a second light-emitting element disposed adjacent to each other, wherein the maximum light emission angle of the second light-emitting element is smaller than the maximum light emission angle of the first light-emitting element;

[0014] The display panel has a first display mode and a second display mode, and the driving method includes:

[0015] In the first display mode, the light emission states of the first light-emitting element and the second light-emitting element are controlled to be the same;

[0016] In the second display mode, the light emission states of the first light-emitting element and the second light-emitting element are different.

[0017] Thirdly, based on the same inventive concept, embodiments of the present invention also provide a display device, including the aforementioned display panel.

[0018] The technical solutions provided in the embodiments of the present invention have the following beneficial effects:

[0019] The first display mode is a shared display mode. In this mode, both the first and second light-emitting elements are used to display the frame image required for the current frame. In this mode, the first and second light-emitting elements work together to meet the brightness requirements of the display panel at a normal viewing angle, allowing the observer to view the effective image normally at a normal viewing angle. Simultaneously, because the first light-emitting element can emit light at a wide angle, it can also be used to meet the brightness requirements of the display panel at wide viewing angles, allowing the observer to view the effective image normally even at wide viewing angles, thus achieving a multi-view sharing function.

[0020] The second display mode is a privacy screen mode. In this mode, the second light-emitting element displays the frame that needs to be shown in the current frame, while the first light-emitting element can be controlled to either not emit light or display other blurry images. In this mode, only the second light-emitting element with a small light-emitting angle is used to display the effective image. Therefore, the observer can only view the effective image normally at a normal viewing angle. At a wide viewing angle, the observer cannot see the effective image. For example, when the first light-emitting element is not emitting light, the observer cannot see the image at a wide viewing angle, or when the first light-emitting element displays a blurry image, the observer can only see some blurry images at a wide viewing angle. This achieves the privacy screen function at wide viewing angles.

[0021] In summary, the technical solution provided in this invention utilizes two light-emitting elements with different light-emitting angles. Switching between shared display mode and privacy display mode can be achieved simply by controlling the light-emitting states of these two elements. This eliminates the need for a privacy film to provide privacy functionality, effectively simplifying the display panel's structural design and making it thinner and lighter. This technical solution can be applied to various display products, such as mobile phones to protect personal information security, or in vehicle displays to improve driving safety. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 is a schematic diagram of a display panel provided in an embodiment of the present invention;

[0024] Figure 2 is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention;

[0025] Figure 3 is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention;

[0026] Figure 4 is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention;

[0027] Figure 5 is a schematic diagram of the arrangement of the first light-emitting element and the second light-emitting element provided in an embodiment of the present invention;

[0028] Figure 6 is a top view of a display panel provided in an embodiment of the present invention;

[0029] Figure 7 is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention;

[0030] Figure 8 is another top view of the display panel provided in an embodiment of the present invention;

[0031] Figure 9 is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention;

[0032] Figure 10 is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention;

[0033] Figure 11 is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention;

[0034] Figure 12 is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention;

[0035] Figure 13 is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention;

[0036] Figure 14 is a schematic diagram of another arrangement of the first light-emitting element and the second light-emitting element provided in an embodiment of the present invention;

[0037] Figure 15 is a schematic diagram of another arrangement of the first light-emitting element and the second light-emitting element provided in the embodiment of the present invention;

[0038] Figure 16 is a schematic diagram of another arrangement of the first light-emitting element and the second light-emitting element provided in an embodiment of the present invention;

[0039] Figure 17 is another top view of the display panel provided in an embodiment of the present invention;

[0040] Figure 18 is a schematic diagram of the working state of the light-emitting element corresponding to Figure 17 in the first display mode and the second display mode;

[0041] Figure 19 is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention;

[0042] Figure 20 is a schematic diagram of a pixel circuit provided in an embodiment of the present invention;

[0043] Figure 21 is a timing diagram corresponding to Figure 20;

[0044] Figure 22 is another timing diagram corresponding to Figure 20;

[0045] Figure 23 is a schematic diagram of a display device provided in an embodiment of the present invention. Detailed Implementation

[0046] To better understand the technical solution of the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0047] It should be understood that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0048] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0049] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0050] Various modifications and variations can be made to this invention without departing from its spirit or scope, as will be apparent to those skilled in the art. Therefore, this invention is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this invention can be combined with each other without contradiction.

[0051] This invention provides a display panel, which may be an organic light-emitting diode (OLED) display panel.

[0052] As shown in Figure 1, which is a schematic diagram of a display panel provided in an embodiment of the present invention, the display panel includes a first light-emitting element 1 and a second light-emitting element 2 disposed adjacent to each other. The maximum light emission angle of the second light-emitting element 2 is smaller than the maximum light emission angle of the first light-emitting element 1.

[0053] The maximum light emission angle of a light-emitting element can be understood as the angle between the emitted light at its maximum angle and the normal, where the normal direction is perpendicular to the plane of the display panel. In this embodiment of the invention, for example, the maximum light emission angle of the first light-emitting element 1 can be 85°, and the maximum light emission angle of the second light-emitting element 2 can be 45°.

[0054] The display panel has a first display mode and a second display mode. In the first display mode, the first light-emitting element 1 and the second light-emitting element 2 emit light in the same state; in the second display mode, the first light-emitting element 1 and the second light-emitting element 2 emit light in different states.

[0055] In this embodiment of the invention, "the first light-emitting element 1 and the second light-emitting element 2 have the same light-emitting state" can be understood as the two light-emitting elements being used to display the same image in the same frame, while "the first light-emitting element 1 and the second light-emitting element 2 have different light-emitting states" can be understood as the two light-emitting elements not being used to display the same image in the same frame.

[0056] For example, the first display mode is a shared display mode. In the first display mode, both the first light-emitting element 1 and the second light-emitting element 2 are used to display the frame image required for the current frame. In this mode, the first light-emitting element 1 and the second light-emitting element 2 together meet the brightness requirements of the display panel at a normal viewing angle, allowing the observer to normally view the effective image at a normal viewing angle. At the same time, because the first light-emitting element 1 can emit light at a wide angle, it can also be used to meet the brightness requirements of the display panel at a wide viewing angle, allowing the observer to normally view the effective image at a wide viewing angle as well, thereby achieving the multi-view sharing function.

[0057] The second display mode is a privacy screen mode. In this mode, the second light-emitting element 2 displays the frame that needs to be displayed in the current frame, while the first light-emitting element 1 can be controlled to either not emit light or display other blurry images. In this mode, only the second light-emitting element 2 with a small light-emitting angle is used to display the effective image. Therefore, the observer can only view the effective image normally at a normal viewing angle, and cannot view the effective image at a wide viewing angle. For example, when the first light-emitting element 1 is not emitting light, the observer cannot see the image directly at a wide viewing angle, or when the first light-emitting element 1 displays a blurry image, the observer can only see some blurry images at a wide viewing angle, thus achieving the privacy screen function at a wide viewing angle.

[0058] In summary, the technical solution provided in this invention utilizes two light-emitting elements with different light-emitting angles. Switching between shared display mode and privacy display mode can be achieved simply by controlling the light-emitting states of these two elements. This eliminates the need for a privacy film to provide privacy functionality, effectively simplifying the display panel's structural design and making it thinner and lighter. Furthermore, this technical solution can be applied to various display products, such as mobile phones to protect personal information security, or in vehicle displays to improve driving safety.

[0059] In an alternative embodiment, referring again to FIG1, the display panel further includes a substrate 3. The minimum distance d2 between the second light-emitting element 2 and the substrate 3 is less than the minimum distance d1 between the first light-emitting element 1 and the substrate 3.

[0060] This configuration involves a differentiated design of the positions of the first light-emitting element 1 and the second light-emitting element 2 within the overall film structure of the display panel. Compared to the first light-emitting element 1, the second light-emitting element 2 is positioned lower. Consequently, some of the wide-angle light emitted by the second light-emitting element 2 is blocked by other film layers, thus narrowing the light emission angle range of the second light-emitting element 2. For example, in the second display mode, when only the second light-emitting element 2 is emitting light, the wide-viewing-angle light emission is significantly limited, and the observer cannot see the image at wide viewing angles.

[0061] In an alternative embodiment where the positions of the two light-emitting elements are differentiated, as shown in FIG2, FIG2 is another structural schematic diagram of the display panel provided in the embodiment of the present invention. The display panel further includes an anode layer 4, a first pixel definition layer 5 and a first film layer 6 located on one side of the substrate 3.

[0062] The first light-emitting element 1 includes a first anode 7 and a first light-emitting layer 8, and the second light-emitting element 2 includes a second anode 9 and a second light-emitting layer 10. Both the first anode 7 and the second anode 9 are located in the anode layer 4.

[0063] The first film layer 6 is located on the side of the anode layer 4 near the substrate 3, and the first film layer 6 includes a third opening 13.

[0064] The first pixel defining layer 5 is located on the side of the anode layer 4 away from the substrate 3. The first pixel defining layer 5 includes a first opening 11 and a second opening 12. The first light-emitting layer 8 is located in the first opening 11, the second opening 12 exposes the third opening 13, and the second light-emitting layer 10 is located in the second opening 12.

[0065] In addition, the display panel also includes a cathode layer 14, which is located on the side of the first pixel definition layer 5 away from the substrate 3.

[0066] In the manufacturing process corresponding to this structure, the first film layer 6 with the third opening 13 is formed first, followed by the anode layer 4, and then the first pixel definition layer 5. During the formation of the anode layer 4, the second anode 9 is recessed within the third opening 13, covering the sidewall of the third opening 13. Therefore, when the second light-emitting layer 10 emits light, a portion of the large-angle light propagating towards the sidewall of the third opening 13 is blocked by the second anode 9 and cannot continue to be emitted in its original direction, thus narrowing the light emission angle range of the second light-emitting element 2. This arrangement can be considered as not adjusting the position of the first light-emitting element 1, but only moving the position of the second light-emitting element 2 downwards, thereby designing different positions for the two light-emitting elements.

[0067] Regarding the first film layer 6, in an optional embodiment, referring again to FIG2, the display panel further includes a planarization layer 15, which is located on the side of the anode layer 4 near the substrate 3 and is further in contact with the first pixel definition layer 5. The first film layer 6 includes the planarization layer 15.

[0068] Understandably, the deeper the third opening 13, the more large-angle light emitted by the second light-emitting layer 10 will be blocked by the second anode 9 and will not be able to continue to be emitted along the original path. Correspondingly, the maximum light emission angle of the second light-emitting element 2 will be smaller.

[0069] Since the thickness of the planarization layer 15 is typically much greater than that of other inorganic insulating layers, placing the third opening 13 within the planarization layer 15 allows for easier adjustment of the depth of the third opening 13, and consequently, easier adjustment of the maximum light emission angle achievable by the second light-emitting element 2. For example, the third opening 13 can be made not to penetrate the planarization layer 15 to allow for a slightly larger maximum light emission angle of the second light-emitting element 2; alternatively, the third opening 13 can be made to penetrate the planarization layer 15 to allow for a slightly smaller maximum light emission angle of the second light-emitting element 2.

[0070] Regarding the third opening 13, in an optional embodiment, as shown in FIG3, FIG3 is another structural schematic diagram of the display panel provided in the embodiment of the present invention, the bottom surface of the third opening 13 can be set as a non-flat surface, changing the shape of the second light-emitting layer 10, thereby adjusting the transmission angle of the light emitted by the second light-emitting layer 10. In this way, the maximum light emission angle of the second light-emitting element 2 can be adjusted more flexibly by combining the transmission direction of the light emitted by the second light-emitting layer 10 itself.

[0071] Furthermore, in order to simplify the process of forming the third opening 13 and to enable more large-angle light emitted by the second light-emitting layer 10 to be blocked by the second anode 9 at the sidewall of the third opening 13, referring again to FIG3, the bottom surface of the third opening 13 can be set as an arc surface, so that it is recessed in the direction closer to the substrate 3.

[0072] Of course, in other optional embodiments of the present invention, the bottom surface of the third opening 13 may also be a wavy surface or other non-flat surface, which will not be listed one by one in the present invention.

[0073] In another alternative embodiment where the positions of the two light-emitting elements are differentiated, as shown in FIG4, FIG4 is a schematic diagram of another structure of the display panel provided in the embodiment of the present invention. The first light-emitting element 1 includes a first anode 7 and a first light-emitting layer 8, and the second light-emitting element 2 includes a second anode 9 and a second light-emitting layer 10.

[0074] The display panel also includes a first pixel definition layer 5 and a second pixel definition layer 16 located on one side of the substrate 3.

[0075] The first pixel definition layer 5 is located on the side of the second anode 9 away from the substrate 3. The first pixel definition layer 5 includes a second opening 12, and the second light-emitting layer 10 is located in the second opening 12.

[0076] The first anode 7 is located on the side of the first pixel definition layer 5 away from the substrate 3.

[0077] The second pixel defining layer 16 is located on the side of the first anode 7 away from the substrate 3. The second pixel defining layer 16 includes a fourth opening 17 and a fifth opening 18. The fourth opening 17 exposes the second opening 12, and the first light-emitting layer 8 is located at the fifth opening 18.

[0078] In this structure, a portion of the large-angle light emitted by the second light-emitting element 2 is blocked by the sidewall of the first pixel definition layer 5 and cannot be emitted, and another portion of the large-angle light is blocked by the sidewall of the second pixel definition layer 16 and cannot be emitted. These two pixel definition layers block a large amount of large-angle light, thus making the second light-emitting element 2 have a smaller light emission range.

[0079] This setting can be regarded as not adjusting the position of the second light-emitting element 2, but moving the position of the first light-emitting element 1 upward. However, when the position of the first light-emitting element 1 is moved upward, a second pixel definition layer 16 is added, so the light emission angle of the second light-emitting element 2 can be further adjusted by using the second pixel definition layer 16.

[0080] It should be noted that the maximum light emission angle of the second light-emitting element 2 can be related to the thickness of the first pixel definition layer 5 and / or the thickness of the second pixel definition layer 16. For example, in the direction perpendicular to the plane of the substrate 3, the thickness of the first pixel definition layer 5 can be set to be greater than the thickness of the second pixel definition layer 16. On the one hand, the first pixel definition layer 5 can raise the position of the first light-emitting element 1 higher; on the other hand, the first pixel definition layer 5 can also block more large-angle light, thereby reducing the maximum light emission angle of the second light-emitting element 2. In one configuration, in the direction perpendicular to the plane of the substrate 3, the thickness of the first pixel definition layer 5 is more than twice the thickness of the second pixel definition layer 16.

[0081] In one optional embodiment, as shown in FIG5, FIG5 is a schematic diagram of the arrangement of a first light-emitting element 1 and a second light-emitting element 2 provided in an embodiment of the present invention, wherein at least one second light-emitting element 2 of the same color as the first light-emitting element 1 is disposed adjacent to the first light-emitting element 1.

[0082] More specifically, the display panel includes a plurality of light-emitting units 19, each of which includes a first light-emitting element 1 and a second light-emitting element 2 that are arranged adjacent to each other and are of the same color.

[0083] The first light-emitting element 1 includes a first red light-emitting element 1-R, a first green light-emitting element 1-G, and a first blue light-emitting element 1-B; the second light-emitting element 2 includes a second red light-emitting element 2-R, a second green light-emitting element 2-G, and a second blue light-emitting element 2-B.

[0084] The light-emitting unit 19 includes a red light-emitting unit 19-R, a green light-emitting unit 19-G, and a blue light-emitting unit 19-B. Specifically, the red light-emitting unit 19-R includes a first red light-emitting element 1-R and at least one second red light-emitting element 2-R; the green light-emitting unit 19-G includes a first green light-emitting element 1-G and at least one second green light-emitting element 2-G; and the blue light-emitting unit 19-B includes a first blue light-emitting element 1-B and at least one second blue light-emitting element 2-B.

[0085] Based on the above arrangement, in the first display mode, the first light-emitting element 1 and the second light-emitting element 2, which are arranged adjacently and have the same color, can be used to present the brightness of the same pixel. That is, the data voltage received by these at least two first light-emitting elements 1 and the second light-emitting element 2 is designed to be the same to reduce the difficulty of driving design.

[0086] In one alternative implementation, in the second display mode, the second light-emitting element 2 displays a frame image, and the image displayed by the first light-emitting element 1 is different from the frame image.

[0087] In the second display mode, by also emitting light from the first light-emitting element 1, the design requirements for the maximum light emission angle of the second light-emitting element 2 can be reduced. Specifically, in the second display mode, assuming only the second light-emitting element 2 is controlled to emit light, when privacy requirements are met at some angles with relatively small viewing angles, the maximum light emission angle of the second light-emitting element 2 needs to be set smaller. Consequently, the position of the second light-emitting element 2 needs to be set lower, or the position of the first light-emitting element 1 needs to be set higher, which will have a greater impact on the overall thickness of the display panel. When the first light-emitting element 1 is also controlled to emit light, and the image displayed by the first light-emitting element 1 is different from the frame image, the first light-emitting element 1 can be used to present some blurred images. At angled viewing angles, this blurred image can be used to interfere with the frame image, making it impossible for the observer to see the effective image normally at angled viewing angles.

[0088] In one optional embodiment, as shown in FIG6, FIG6 is a top view of a display panel provided in an embodiment of the present invention, wherein the maximum light-emitting area of ​​the second light-emitting element 2 is greater than the maximum light-emitting area of ​​the first light-emitting element 1.

[0089] For example, the light-emitting area of ​​the first red light-emitting element 1-R is smaller than the light-emitting area of ​​the second red light-emitting element 2-R, the light-emitting area of ​​the first green light-emitting element 1-G is smaller than the light-emitting area of ​​the second green light-emitting element 2-G, and the light-emitting area of ​​the first blue light-emitting element 1-B is smaller than the light-emitting area of ​​the second blue light-emitting element 2-B.

[0090] The second light-emitting element 2 has a larger light-emitting area, so the human eye will primarily perceive the image presented by the second light-emitting element 2. Even if the first light-emitting element 1 is used to present other images in the second display mode, the effective image seen by the observer at a normal viewing angle will hardly be affected. In other words, the first light-emitting element 1 has a smaller light-emitting area. When the first light-emitting element 1 emits light in the second display mode and the displayed image is different from the frame image, the influence of the small-angle light emitted by the first light-emitting element 1 on the effective image presented by the second light-emitting element 2 can be reduced.

[0091] In an optional embodiment, referring to FIG. 6, at least one second light-emitting element 2 of the same color is disposed adjacent to the first light-emitting element 1. Furthermore, in the second display mode, the grayscale displayed by the first light-emitting element 1 is greater than the grayscale displayed by the adjacent second light-emitting element 2 of the same color, wherein the grayscale displayed by the second light-emitting element 2 is the grayscale corresponding to the frame image to be displayed in the current frame.

[0092] That is, in the second display mode: in the red light-emitting unit 19-R, the grayscale displayed by the first red light-emitting element 1-R is greater than the grayscale displayed by the second red light-emitting element 2-R; in the green light-emitting unit 19-G, the grayscale displayed by the first green light-emitting element 1-G is greater than the grayscale displayed by the second green light-emitting element 2-G; and in the blue light-emitting unit 19-B, the grayscale displayed by the first blue light-emitting element 1-B is greater than the grayscale displayed by the second blue light-emitting element 2-B.

[0093] In this configuration, a grayscale difference value ΔG can be preset. When the grayscale displayed by the second light-emitting element 2 plus ΔG does not exceed the maximum grayscale, the grayscale displayed by the first light-emitting element 1 can be set to the grayscale displayed by the second light-emitting element 2 plus ΔG. When the grayscale displayed by the second light-emitting element 2 plus ΔG exceeds the maximum grayscale, the grayscale displayed by the first light-emitting element 1 can be set to the maximum grayscale.

[0094] In this configuration, when the first light-emitting element 1 displays other images, the grayscale displayed by the first light-emitting element 1 is related to the grayscale displayed by the adjacent second light-emitting element 2 of the same color. On the one hand, this can reduce the influence of the small-angle light emitted by the first light-emitting element 1 on the effective image presented by the second light-emitting element 2. On the other hand, because the grayscale displayed by the first light-emitting element 1 is larger, the image presented by the first light-emitting element 1 will be brighter. This brighter image will have an interference effect, making it impossible for the observer to see a clear image at a wide viewing angle. Thus, the first light-emitting element 1 can be used to controllably interfere with the image presented by the second light-emitting element 2.

[0095] Alternatively, in another optional implementation, in the second display mode, different first light-emitting elements 1 all display the same grayscale, so that the observer cannot see the normal effective image at a wide viewing angle.

[0096] Furthermore, the same grayscale displayed by the first light-emitting element 1 can be adjusted in real time according to the frame image to be displayed in the current frame. For example, when the frame image to be displayed is a bright image, the first light-emitting element 1 can display a high grayscale, and when the frame image to be displayed is a dark image, the first light-emitting element 1 can display a low grayscale, thereby reducing the impact of the small-angle light emitted by the first light-emitting element 1 on the effective image presented by the second light-emitting element 2.

[0097] Alternatively, in another optional implementation, in the second display mode, the image displayed by the first light-emitting element 1 is different from the content presented by the frame image. That is, the first light-emitting element 1 can also display normal static or dynamic images, so that the observer can see two different programs from the frontal view and the wide view, thus achieving multi-screen display from different perspectives.

[0098] In one optional embodiment, as shown in FIG7, which is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention, the display panel further includes a plurality of light-shielding portions 20. The light-shielding portions 20 are located on the side of the first light-emitting element 1 away from the substrate 3, and overlap with the first light-emitting element 1 in a direction perpendicular to the plane of the substrate 3. The light-shielding portions 20 are used to block the small-angle light emitted by the first light-emitting element 1 and the large-angle light emitted by the second light-emitting element 2.

[0099] In the first display mode, both the first light-emitting element 1 and the second light-emitting element 2 are used to display the frame image required for the current frame. In this mode, although the small-angle light emitted by the first light-emitting element 1 is blocked by the light-shielding part 20 and cannot pass through the panel, the light emitted by the second light-emitting element 2 is emitted normally. Therefore, this mode can still utilize the second light-emitting element 2 to ensure the screen brightness of the display panel at a normal viewing angle. At the same time, the large-angle light emitted by the first light-emitting element 1 is not blocked by the light-shielding part 20 and can pass through the panel normally. Therefore, the first light-emitting element 1 can also be used to ensure the screen brightness of the display panel at a wide viewing angle, so that the observer can normally view the effective image at both normal and wide viewing angles.

[0100] In the second display mode, the second light-emitting element 2 is used to display the frame image required for the current frame, while the first light-emitting element 1 is used to display other images. In this mode, the image presented by the second light-emitting element 2 is different from that presented by the first light-emitting element 1. Therefore, by using the light-shielding part 20 to block the small-angle light emitted by the first light-emitting element 1, the small-angle light emitted by the first light-emitting element 1 can be prevented from affecting the image presented by the second light-emitting element 2, ensuring the viewing effect for the observer at a normal viewing angle. In addition, the light-shielding part 20 can also block the large-angle light emitted by the second light-emitting element 2, further improving the privacy protection effect.

[0101] Furthermore, referring again to Figure 7, along the first direction x, the minimum distance d3 between the edge of the light-shielding part 20 and the edge of the first light-emitting element 1 that overlaps with it is less than or equal to 10% of the length d4 of the first light-emitting element 1, so that the light-shielding part 20 only blocks the small-angle light emitted by the first light-emitting element 1, and does not block the large-angle light emitted by the first light-emitting element 1, thus ensuring the viewing effect of the observer at a wide viewing angle in the first display mode.

[0102] In this context, the first direction x is parallel to the plane containing the substrate 3. The length of the first light-emitting element 1 in the first direction x can be understood as the maximum dimension of the first light-emitting layer 8 in the first direction x.

[0103] In an optional implementation, as shown in Figures 8 and 9, Figure 8 is another top view of the display panel provided in an embodiment of the present invention, and Figure 9 is another structural schematic diagram of the display panel provided in an embodiment of the present invention. The display panel includes a pixel circuit 21, and the first light-emitting element 1 and the second light-emitting element 2 are electrically connected to different pixel circuits 21 to better control the light-emitting state of the two light-emitting elements independently.

[0104] In one optional embodiment, as shown in Figures 10 to 13, Figure 10 is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention, Figure 11 is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention, Figure 12 is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention, and Figure 13 is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention. The display panel further includes a substrate 3, an anode layer 4 located on one side of the substrate 3, a first pixel definition layer 5, and a third pixel definition layer 22.

[0105] The first light-emitting element 1 includes a first anode 7 and a first light-emitting layer 8, and the second light-emitting element 2 includes a second anode 9 and a second light-emitting layer 10. The first anode 7 and the second anode 9 are located in the anode layer 4.

[0106] Both the first pixel definition layer 5 and the third pixel definition layer 22 are located on the side of the anode layer 4 away from the substrate 3. The first pixel definition layer 5 includes a first opening 11 and a second opening 12, and the third pixel definition layer 22 includes a sixth opening 23 and a seventh opening 24. Specifically, the first opening 11 is located within the sixth opening 23, the first light-emitting layer 8 is located within the first opening 11, the seventh opening 24 is located within the second opening 12, and the second light-emitting layer 10 is located within the second opening 12.

[0107] This structure has two pixel definition layers. By designing the taper angle, material, etc. of the third pixel definition layer 22 differently from the first pixel definition layer 5, the third pixel definition layer 22 can be used to block the large-angle light emitted by the second light-emitting element 2, thereby narrowing the light emission angle range of the second light-emitting element 2.

[0108] In this embodiment of the invention, referring to Figures 11 and 13, a third pixel definition layer 22 can be further provided on the basis of providing a third opening 13, so as to further narrow the light emission angle of the second light-emitting element 2.

[0109] Furthermore, referring to Figures 10 and 11, along the first direction x, the minimum distance d5 between the edge of the first opening 11 and the edge of the sixth opening 23 is greater than the minimum distance d6 between the edge of the second opening 12 and the edge of the seventh opening 24, in order to avoid the third pixel definition layer 22 affecting the normal light emission of the first light-emitting element 1. The first direction x is parallel to the plane of the substrate 3.

[0110] Regarding the third pixel definition layer 22, in an optional embodiment, referring to Figures 10 and 11, the third pixel definition layer 22 is located on the side of the first pixel definition layer 5 closest to the substrate 3. In the first pixel definition layer 5, the angle between the sidewall of the first opening 11 and the surface adjacent to it on the side closest to the substrate 3 is a first angle α. In the third pixel definition layer 22, the angle between the sidewall of the seventh opening 24 and the surface adjacent to it on the side closest to the substrate 3 is a second angle β. Wherein, β > α.

[0111] When the third pixel definition layer 22 is located below the first pixel definition layer 5, setting the taper angle (second included angle β) of the third pixel definition layer 22 to be larger can make the third pixel definition layer 22 block more large-angle light emitted by the second light-emitting element 2.

[0112] Furthermore, in this embodiment of the invention, the taper angle (first included angle α) of the first pixel definition layer 5 at different openings can be consistent, and the taper angle of the third pixel definition layer 22 at different openings can also be consistent. This structure utilizes the nested openings in the two pixel definition layers to ensure that the light-emitting openings corresponding to the first light-emitting element 1 and the second light-emitting element 2 have different taper angles. This still ensures that the taper angles set by the same pixel definition layer for different openings are consistent, and the manufacturing process is simpler.

[0113] Furthermore, to ensure that the light emission angle of the second light-emitting element 2 meets the privacy protection requirements, the second included angle β can be set to be greater than or equal to 60°. Additionally, the first included angle α can be set to be less than or equal to 30°.

[0114] Regarding the third pixel definition layer 22, in another alternative embodiment, referring to Figures 12 and 13, the third pixel definition layer 22 is located on the side of the first pixel definition layer 5 away from the substrate 3, and the third pixel definition layer 22 includes a light-shielding material, such as a black light-absorbing material.

[0115] When the third pixel definition layer 22 is located above the first pixel definition layer 5, the third pixel definition layer 22 is designed as a light-shielding film layer. The third pixel definition layer 22 can absorb more large-angle light emitted by the second light-emitting element 2 and prevent it from being emitted.

[0116] In an optional implementation, as described above, in the first display mode, the first light-emitting element 1 and the second light-emitting element 2 display the same image, that is, both are used to display the frame image required to be displayed in the current frame, so that the observer can normally view the effective image in both normal viewing angle and wide viewing angle, and perform multi-view sharing.

[0117] In one optional implementation, in the second display mode, the second light-emitting element 2 displays a frame, while the first light-emitting element 1 does not emit light, so that only the second light-emitting element 2 with a smaller light emission angle emits light, preventing the observer from seeing the effective image from a wide viewing angle. Moreover, the fact that the first light-emitting element 1 does not emit light in the second display mode can also save power consumption.

[0118] In one alternative embodiment, referring to Figures 14 to 16, at least two second light-emitting elements 2 of the same color as the first light-emitting element 1 are disposed adjacent to it.

[0119] For example, the red light-emitting unit 19-R includes a first red light-emitting element 1-R and two second red light-emitting elements 2-R, the green light-emitting unit 19-G includes a first green light-emitting element 1-G and two second green light-emitting elements 2-G, and the blue light-emitting unit 19-B includes a first blue light-emitting element 1-B and two second blue light-emitting elements 2-B.

[0120] With this configuration, there are more second light-emitting elements 2, and their distribution is more uniform throughout the display area. In privacy mode, the display effect of the frame image presented by the second light-emitting elements 2 is better.

[0121] Further, as shown in Figures 14 and 15, Figure 14 is a schematic diagram of another arrangement of the first light-emitting element 1 and the second light-emitting element 2 provided in an embodiment of the present invention, and Figure 15 is a schematic diagram of yet another arrangement of the first light-emitting element 1 and the second light-emitting element 2 provided in an embodiment of the present invention. For at least a portion of the first light-emitting element 1, the first light-emitting element 1 is respectively provided with the second light-emitting element 2 adjacent to each other on opposite sides in at least one direction, so as to better achieve privacy protection from left and right perspectives or privacy protection from up and down perspectives.

[0122] And / or, as shown in Figure 16, which is another schematic diagram of the arrangement of the first light-emitting element 1 and the second light-emitting element 2 provided in the embodiment of the present invention, at least some of the adjacent sides of the first light-emitting element 1 are respectively provided with the second light-emitting element 2 so as to simultaneously achieve privacy protection from both left and right and up and down perspectives.

[0123] In an optional embodiment, as shown in Figures 17 and 18, Figure 17 is another top view of the display panel provided in an embodiment of the present invention, and Figure 18 is a schematic diagram of the working state of the light-emitting elements corresponding to Figure 17 in a first display mode and a second display mode. In Figure 18, the absence of a fill pattern for the first light-emitting element 1 and the second light-emitting element 2 means that they do not emit light. The display panel includes a light-emitting unit 19, which includes a first light-emitting element 1 and at least two second light-emitting elements 2 arranged adjacent to it and of the same color.

[0124] The light-emitting unit 19 includes a first light-emitting unit 26 and / or a second light-emitting unit 25.

[0125] In the first display mode DM1, both the first light-emitting element 1 and the second light-emitting element 2 in the first light-emitting unit 26 and / or the second light-emitting unit 25 emit light.

[0126] In the second display mode DM2, the first light-emitting element 1 in the first light-emitting unit 26 does not emit light, the second light-emitting element 2 emits light, and / or the first light-emitting element 1 and part of the second light-emitting element 2 in the second light-emitting unit 25 emit light.

[0127] Based on the setting method, the illumination of the first light-emitting element 1 and the second light-emitting element 2 in different light-emitting units 19 can be flexibly controlled. For example, in the second display mode DM2, in some light-emitting units 19, the first light-emitting element 1 can be controlled not to emit light, while in other light-emitting units 19, the first light-emitting element 1 can be controlled to emit light, and some blurry images can be displayed using these emitting first light-emitting elements 1.

[0128] Furthermore, at least a portion of the first light-emitting units 26 emits green light, meaning at least a portion of the first light-emitting units 26 are green light-emitting units 19-G. Because green light is brighter, in the second display mode, selecting at least the green first light-emitting element 1 to not emit light can reduce the impact of the small-angle light emitted by the first light-emitting element 1 on the effective image presented at the normal viewing angle.

[0129] In one optional embodiment, as shown in FIG19, FIG19 is another structural schematic diagram of the display panel provided in the embodiment of the present invention, the second light-emitting element 2 includes a second anode 9, and the second anodes 9 of at least two second light-emitting elements 2 are connected to each other.

[0130] In a more specific embodiment, the display panel includes a light-emitting unit 19, which includes a first light-emitting element 1 and at least two second light-emitting elements 2 that are adjacent to it and have the same color. The second anodes 9 of the at least two second light-emitting elements 2 in the same light-emitting unit 19 are connected to each other.

[0131] In this structure, at least two second light-emitting elements 2 in the same light-emitting unit 19 emit light synchronously or not emit light synchronously, and the brightness is the same when they emit light synchronously. In this way, at least two second light-emitting elements 2 only need to be connected to the same pixel circuit 21, which can save the number of pixel circuits 21 required in the display panel.

[0132] In an optional implementation, the first light-emitting element 1 and the second light-emitting element 2 in the same light-emitting unit 19 may also be driven by the same pixel circuit 21.

[0133] Specifically, as shown in FIG20, FIG20 is a schematic diagram of a pixel circuit 21 provided in an embodiment of the present invention. The display panel further includes the pixel circuit 21, which includes a driving module 27, a first light-emitting control module 28, a second light-emitting control module 29, a third light-emitting control module 30, and a fourth light-emitting control module 31.

[0134] Specifically, the control terminal of the first light-emitting control transistor is electrically connected to the first light-emitting control signal line Emit1, its first electrode is electrically connected to the power signal line PVDD, and its second electrode is electrically connected to the first terminal of the driving module 27. The control terminal of the second light-emitting control module 29 is electrically connected to the first light-emitting control signal line Emit1, its first electrode is electrically connected to the second terminal of the driving module 27, and its second electrode is electrically connected to the control node N0.

[0135] The control terminal of the third light-emitting control module 30 is electrically connected to the second light-emitting control signal line Emit2, the first electrode is electrically connected to the control node N0, and the second electrode is electrically connected to the first light-emitting element 1. The control terminal of the fourth light-emitting control module 31 is electrically connected to the third light-emitting control signal line Emit3, the first electrode is electrically connected to the control node N0, and the second electrode is electrically connected to the second light-emitting element 2.

[0136] In addition, the first light-emitting element 1 and the second light-emitting element 2 are also electrically connected to the negative power line PVEE.

[0137] This circuit structure is more suitable for driving the first light-emitting element 1 to not emit light in the second display mode:

[0138] In the first display mode DM1, referring to Figure 21 (which is a timing diagram corresponding to Figure 20), the timing of the second light-emitting control signal line Emit2, the third light-emitting control signal line Emit3, and the first light-emitting control signal line Emit1 is the same. That is, during the initialization period T1 and the charging period T2, the first light-emitting control signal line Emit1, the second light-emitting control signal line Emit2, and the third light-emitting control signal line Emit3 all provide a non-enabled level. During the light-emitting control period T3, the first light-emitting control signal line Emit1 provides an enabled level, and the second light-emitting control signal line Emit2 and the third light-emitting control signal line Emit3 also provide an enabled level. This allows the driving current converted by the driving module 27 to further flow into the first light-emitting element 1 and the second light-emitting element 2, enabling the first light-emitting element 1 and the second light-emitting element 2 to emit light normally.

[0139] In the second display mode DM2, referring to Figure 22, which is another timing diagram corresponding to Figure 20, during the initialization period T1 and the charging period T2, the first light-emitting control signal line Emit1, the second light-emitting control signal line Emit2, and the third light-emitting control signal line Emit3 all provide a non-enabled level. During the light-emitting control period T3, the first light-emitting control signal line Emit1 and the third light-emitting control signal line Emit3 provide an enabled level, while the second light-emitting control signal line Emit2 continues to provide a non-enabled level. As a result, the driving current converted by the driving module 27 can only flow into the second light-emitting element 2 to drive the second light-emitting element 2 to emit light, but cannot flow into the first light-emitting element 1 to control the first light-emitting element 1 not to emit light.

[0140] More specifically, the driving module 27 includes a driving transistor M1, the gate of which is electrically connected to the first node N1, the first electrode of which is electrically connected to the second node N2, and the second electrode of which is electrically connected to the third node N3.

[0141] The first light-emitting control module 28 includes a first light-emitting control transistor M2. The gate of the first light-emitting control transistor M2 is electrically connected to the first light-emitting control signal line Emit1, the first electrode is electrically connected to the first power supply line PVDD, and the second electrode is electrically connected to the second node N2.

[0142] The second light-emitting control module 29 includes a second light-emitting control transistor M3. The gate of the second light-emitting control transistor M3 is electrically connected to the first light-emitting control signal line Emit1, the first electrode is electrically connected to the third node N3, and the second electrode is electrically connected to the control node N0.

[0143] The third light-emitting control module 30 includes a third light-emitting control transistor M4. The gate of the third light-emitting control transistor M4 is electrically connected to the second light-emitting control signal line Emit2, the first electrode is electrically connected to the control node N0, and the second electrode is electrically connected to the first light-emitting element 1.

[0144] The fourth light-emitting control module 31 includes a fourth light-emitting control transistor M5. The gate of the fourth light-emitting control transistor M5 is electrically connected to the third light-emitting control signal line Emit3, the first electrode is electrically connected to the control node N0, and the second electrode is electrically connected to the second light-emitting element 2.

[0145] In addition, the pixel circuit 21 may also include:

[0146] The gate reset module 32 includes a gate reset transistor M6. The gate of the gate reset transistor M6 is electrically connected to the first scan line Scan1, the first terminal is electrically connected to the first reset signal line Ref1, and the second terminal is electrically connected to the first node N1.

[0147] The data writing module 33 includes a data writing transistor M7. The gate of the data writing transistor M77 is electrically connected to the second scan line Scan2, the first terminal is electrically connected to the data line Data, and the second terminal is electrically connected to the second node N2.

[0148] The threshold compensation module 34 includes a threshold compensation transistor M8. The gate of the threshold compensation transistor M8 is electrically connected to the second scan line Scan2, the first electrode is electrically connected to the third node N3, and the second electrode is electrically connected to the first node N1.

[0149] The anode reset module 35 includes an anode reset transistor M9. The gate of the anode reset transistor M9 is electrically connected to the second scan line Scan2, the first terminal is electrically connected to the second reset signal line Ref2, and the second terminal is electrically connected to the control node N0.

[0150] The storage capacitor Cst has its first plate electrically connected to the first power line PVDD and its second plate electrically connected to the first node N1.

[0151] Among them, the gate reset transistor M6 and the threshold compensation transistor M8 can be dual-gate transistors.

[0152] Based on the same inventive concept, embodiments of the present invention also provide a method for driving a display panel.

[0153] Referring to Figure 1, the display panel includes a first light-emitting element 1 and a second light-emitting element 2 arranged adjacent to each other, wherein the maximum light emission angle of the second light-emitting element 2 is smaller than the maximum light emission angle of the first light-emitting element 1.

[0154] The display panel has a first display mode and a second display mode. The driving method includes: in the first display mode, controlling the first light-emitting element 1 and the second light-emitting element 2 to have the same light-emitting state; in the second display mode, controlling the first light-emitting element 1 and the second light-emitting element 2 to have different light-emitting states.

[0155] The first display mode is a shared display mode. In this mode, both the first light-emitting element 1 and the second light-emitting element 2 are used to display the frame image required for the current frame. In this mode, the first light-emitting element 1 and the second light-emitting element 2 together meet the brightness requirements of the display panel at a normal viewing angle, allowing the observer to view the effective image normally at a normal viewing angle. Simultaneously, because the first light-emitting element 1 can emit light at a wide angle, it can also be used to meet the brightness requirements of the display panel at a wide viewing angle, allowing the observer to view the effective image normally at wide viewing angles as well, thus achieving a multi-view sharing function.

[0156] The second display mode is a privacy screen mode. In this mode, the second light-emitting element 2 displays the frame that needs to be displayed in the current frame, while the first light-emitting element 1 can be controlled to either not emit light or display other blurry images. In this mode, only the second light-emitting element 2 with a small light-emitting angle is used to display the effective image. Therefore, the observer can only view the effective image normally at a normal viewing angle, and cannot view the effective image at a wide viewing angle. For example, when the first light-emitting element 1 is not emitting light, the observer cannot see the image directly at a wide viewing angle, or when the first light-emitting element 1 displays a blurry image, the observer can only see some blurry images at a wide viewing angle, thus achieving the privacy screen function at a wide viewing angle.

[0157] In summary, in the technical solution provided by the embodiments of the present invention, by setting two light-emitting elements with different light-emitting angles, the switching between shared display mode and privacy display mode can be realized simply by controlling the light-emitting state of these two light-emitting elements, making the driving method simpler and more controllable.

[0158] In one optional implementation, in the second display mode, the second light-emitting element 2 is controlled to display a frame image, and the image displayed by the first light-emitting element 1 is controlled to be different from the frame image.

[0159] In the second display mode, by also emitting light from the first light-emitting element 1, the design requirements for the maximum light emission angle of the second light-emitting element 2 can be reduced. Specifically, in the second display mode, assuming only the second light-emitting element 2 is controlled to emit light, when privacy requirements are met at some angles with relatively small viewing angles, the maximum light emission angle of the second light-emitting element 2 needs to be set smaller. Consequently, the position of the second light-emitting element 2 needs to be set lower, or the position of the first light-emitting element 1 needs to be set higher, which will have a greater impact on the overall thickness of the display panel. When the first light-emitting element 1 is also controlled to emit light, and the image displayed by the first light-emitting element 1 is different from the frame image, the first light-emitting element 1 can be used to present some blurred images. At angled viewing angles, this blurred image can be used to interfere with the frame image, making it impossible for the observer to see the effective image normally at angled viewing angles.

[0160] Furthermore, referring to Figure 6, at least one second light-emitting element 2 of the same color is disposed adjacent to the first light-emitting element 1.

[0161] In the second display mode, the grayscale displayed by the first light-emitting element 1 is greater than the grayscale displayed by the second light-emitting element 2, which is adjacent to it and has the same color.

[0162] In this configuration, a grayscale difference value ΔG can be preset. When the grayscale displayed by the second light-emitting element 2 plus ΔG does not exceed the maximum grayscale, the grayscale displayed by the first light-emitting element 1 can be set to the grayscale displayed by the second light-emitting element 2 plus ΔG. When the grayscale displayed by the second light-emitting element 2 plus ΔG exceeds the maximum grayscale, the grayscale displayed by the first light-emitting element 1 can be set to the maximum grayscale.

[0163] In this configuration, when the first light-emitting element 1 displays other images, the grayscale displayed by the first light-emitting element 1 is related to the grayscale displayed by the adjacent second light-emitting element 2 of the same color. On the one hand, this can reduce the influence of the small-angle light emitted by the first light-emitting element 1 on the effective image presented by the second light-emitting element 2. On the other hand, because the grayscale displayed by the first light-emitting element 1 is larger, the image presented by the first light-emitting element 1 will be brighter. This brighter image will have an interference effect, making it impossible for the observer to see a clear image at a wide viewing angle. Thus, the first light-emitting element 1 can be used to controllably interfere with the image presented by the second light-emitting element 2.

[0164] Alternatively, in the second display mode, the image displayed by the first light-emitting element 1 is different from the content presented by the frame image. That is, the first light-emitting element 1 can also display normal static or dynamic images, so that the observer can see two different programs from the frontal and wide viewing angles respectively, thus achieving multi-screen display from different perspectives.

[0165] In one optional implementation, in the second display mode, the second light-emitting element 2 is controlled to display a frame image, while the first light-emitting element 1 is controlled not to emit light, so that only the second light-emitting element 2 with a smaller light emission angle emits light, thus preventing the observer from seeing the effective image at a wide viewing angle. Moreover, the first light-emitting element 1 not emitting light in the second display mode can also save power consumption.

[0166] In an alternative embodiment, referring to Figures 17 and 18, the display panel includes a light-emitting unit 19, which includes a first light-emitting element 1 and at least two second light-emitting elements 2 disposed adjacent to it and of the same color.

[0167] The light-emitting unit 19 includes a first light-emitting unit 26 and / or a second light-emitting unit 25. In the second display mode, the first light-emitting element 1 in the first light-emitting unit 26 is controlled to not emit light and the second light-emitting element 2 emits light, and / or, the first light-emitting element 1 and part of the second light-emitting element 2 in the second light-emitting unit 25 are controlled to emit light.

[0168] Based on the setting method, the illumination of the first light-emitting element 1 and the second light-emitting element 2 in different light-emitting units 19 can be flexibly controlled. For example, in the second display mode DM2, in some light-emitting units 19, the first light-emitting element 1 can be controlled not to emit light, while in other light-emitting units 19, the first light-emitting element 1 can be controlled to emit light, and some blurry images can be displayed using these emitting first light-emitting elements 1.

[0169] Based on the same inventive concept, this embodiment of the invention also provides a display device, as shown in FIG23. FIG23 is a structural schematic diagram of the display device provided in this embodiment of the invention, which includes the aforementioned display panel 100. Of course, the display device shown in FIG23 is merely illustrative, and the display device can be any electronic device with display function, such as a mobile phone, a laptop computer, or an in-vehicle display screen.

[0170] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0171] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, characterized by, The display panel comprises a first light emitting element and a second light emitting element arranged adjacently, wherein a maximum light emitting angle of the second light emitting element is smaller than a maximum light emitting angle of the first light emitting element; The display panel has a first display mode and a second display mode; In the first display mode, the first light emitting element and the second light emitting element have the same light emitting state; In the second display mode, the first light emitting element and the second light emitting element have different light emitting states.

2. The display panel of claim 1, wherein The display panel further comprises a substrate; A minimum distance between the second light emitting element and the substrate is smaller than a minimum distance between the first light emitting element and the substrate.

3. The display panel of claim 2, wherein The display panel further comprises an anode layer, a first pixel definition layer and a first film layer on a side of the substrate; wherein The first light emitting element comprises a first anode and a first light emitting layer, and the second light emitting element comprises a second anode and a second light emitting layer, and the first anode and the second anode are on the anode layer; The first pixel definition layer is on a side of the anode layer away from the substrate, and the first pixel definition layer comprises a first opening and a second opening; The first film layer is on a side of the anode layer close to the substrate, and the first film layer comprises a third opening; The first light emitting layer is in the first opening, the second opening exposes the third opening, and the second light emitting layer is in the second opening.

4. The display panel of claim 3, wherein The display panel further comprises a planarization layer on a side of the anode layer close to the substrate; The first film layer comprises the planarization layer.

5. The display panel of claim 3, wherein A bottom surface of the third opening is a non-flat surface.

6. The display panel of claim 5, wherein The bottom surface of the third opening is concave toward a direction close to the substrate.

7. The display panel of claim 2, wherein The first light emitting element comprises a first anode and a first light emitting layer, and the second light emitting element comprises a second anode and a second light emitting layer; The display panel further comprises a first pixel definition layer and a second pixel definition layer on a side of the substrate, wherein The first pixel definition layer is on a side of the second anode away from the substrate, and the first pixel definition layer comprises a second opening, and the second light emitting layer is in the second opening; The first anode is on a side of the first pixel definition layer away from the substrate, and the second pixel definition layer is on a side of the first anode away from the substrate, and the second pixel definition layer comprises a fourth opening and a fifth opening, and the fourth opening exposes the second opening, and the first light emitting layer is in the fifth opening.

8. The display panel of claim 1, wherein The first light emitting element is arranged adjacently with at least one second light emitting element having the same color as the first light emitting element.

9. The display panel of claim 1, wherein In the second display mode, the second light-emitting element displays a frame image, while the first light-emitting element displays... The image is different from the frame image mentioned above.

10. The display panel according to claim 1, characterized in that, The maximum luminous area of ​​the second light-emitting element is greater than the maximum luminous area of ​​the first light-emitting element of the same color.

11. The display panel according to claim 9, characterized in that, At least one second light-emitting element of the same color is disposed adjacent to the first light-emitting element; In the second display mode, the grayscale displayed by the first light-emitting element is greater than the grayscale displayed by the second light-emitting element, which is adjacent to it and has the same color.

12. The display panel according to claim 9, characterized in that, In the second display mode, different first light-emitting elements all display the same grayscale.

13. The display panel according to claim 9, characterized in that, In the second display mode, the image displayed by the first light-emitting element is different from the content presented by the frame image.

14. The display panel according to claim 1, characterized in that, The display panel also includes a substrate; The display panel further includes a plurality of light-shielding portions, which are located on the side of the first light-emitting element away from the substrate, and overlap with the first light-emitting element in a direction perpendicular to the plane of the substrate.

15. The display panel according to claim 14, characterized in that, Along the first direction, the minimum distance between the edge of the light-shielding portion and the edge of the first light-emitting element that overlaps with it is less than or equal to 10% of the length of the first light-emitting element, wherein the first direction is parallel to the plane of the substrate.

16. The display panel according to claim 1, characterized in that, The display panel includes pixel circuits, and the first light-emitting element and the second light-emitting element are electrically connected to different pixel circuits.

17. The display panel according to claim 1, characterized in that, The display panel further includes a substrate, an anode layer located on one side of the substrate, a first pixel definition layer, and a third pixel definition layer; wherein, The first light-emitting element includes a first anode and a first light-emitting layer, and the second light-emitting element includes a second anode and a second light-emitting layer, wherein the first anode and the second anode are located in the anode layer; Both the first pixel definition layer and the third pixel definition layer are located on the side of the anode layer away from the substrate. The first pixel definition layer includes a first opening and a second opening, and the third pixel definition layer includes a sixth opening and a seventh opening. Wherein, the first opening is located inside the sixth opening, the first light-emitting layer is located inside the first opening, the seventh opening is located inside the second opening, and the second light-emitting layer is located inside the second opening.

18. The display panel according to claim 17, characterized in that, In the first direction, a minimum distance between an edge of the first opening and an edge of the sixth opening is greater than a minimum distance between an edge of the second opening and an edge of the seventh opening, wherein the first direction is parallel to a plane on which the substrate is located.

19. The display panel of claim 17, wherein, the third pixel definition layer is located on a side of the first pixel definition layer close to the substrate; in the first pixel definition layer, an included angle between a sidewall of the first opening and a surface close to the substrate on which the sidewall is located is a first included angle, and in the third pixel definition layer, an included angle between a sidewall of the seventh opening and a surface close to the substrate on which the sidewall is located is a second included angle, the second included angle being greater than the first included angle.

20. The display panel of claim 19, wherein, the first included angle is less than or equal to 30°, and the second included angle is greater than or equal to 60°.

21. The display panel of claim 17, wherein, the third pixel definition layer is located on a side of the first pixel definition layer away from the substrate, and the third pixel definition layer comprises a light shielding material.

22. The display panel of claim 1, wherein, in the first display mode, the second light emitting element and the first light emitting element display the same picture.

23. The display panel of claim 1, wherein, in the second display mode, the second light emitting element displays a frame picture, and the first light emitting element does not emit light.

24. The display panel of claim 1, wherein, the first light emitting element is adjacent to at least two second light emitting elements of the same color as the first light emitting element.

25. The display panel of claim 24, wherein, for at least part of the first light emitting element, opposite sides of the first light emitting element in at least one direction are respectively adjacent to the second light emitting elements.

26. The display panel of claim 24, wherein, adjacent sides of at least part of the first light emitting element are respectively adjacent to the second light emitting elements.

27. The display panel of claim 1, wherein, the display panel comprises a light emitting unit, the light emitting unit comprising the first light emitting element and at least two second light emitting elements adjacent to the first light emitting element and of the same color as the first light emitting element; the light emitting unit comprises a first light emitting unit and / or a second light emitting unit; in the second display mode, in the first light emitting unit, the first light emitting element does not emit light, and the second light emitting element emits light, and / or, in the second light emitting unit, the first light emitting element and part of the second light emitting element emit light.

28. The display panel of claim 27, wherein, at least part of the first light emitting unit emits green light.

29. The display panel of claim 1, wherein, the second light emitting element comprises a second anode, and the second anodes of the at least two second light emitting elements are connected to each other.

30. The display panel of claim 1, wherein the display panel further comprises a pixel circuit, the pixel circuit comprising a driving module, a first light emitting control module, a second light emitting control module, a third light emitting control module and a fourth light emitting control module; a control terminal of the first light emitting control transistor is electrically connected with a first light emitting control signal line, a first electrode of the first light emitting control transistor is electrically connected with a power signal line, and a second electrode of the first light emitting control transistor is electrically connected with a first terminal of the driving module; a control terminal of the second light emitting control module is electrically connected with the first light emitting control signal line, a first electrode of the second light emitting control module is electrically connected with a second terminal of the driving module, and a second electrode of the second light emitting control module is electrically connected with a control node; a control terminal of the third light emitting control module is electrically connected with a second light emitting control signal line, a first electrode of the third light emitting control module is electrically connected with the control node, and a second electrode of the third light emitting control module is electrically connected with the first light emitting element; a control terminal of the fourth light emitting control module is electrically connected with a third light emitting control signal line, a first electrode of the fourth light emitting control module is electrically connected with the control node, and a second electrode of the fourth light emitting control module is electrically connected with the second light emitting element.

31. A driving method of a display panel, comprising: the display panel comprising a first light emitting element and a second light emitting element arranged adjacently, wherein a maximum light emitting angle of the second light emitting element is smaller than a maximum light emitting angle of the first light emitting element; the display panel having a first display mode and a second display mode, the driving method comprising: in the first display mode, controlling the first light emitting element and the second light emitting element to have a same light emitting state; in the second display mode, controlling the first light emitting element and the second light emitting element to have different light emitting states.

32. The driving method of claim 31, wherein in the second display mode, controlling the second light emitting element to display a frame picture, and controlling the first light emitting element to display a picture different from the frame picture.

33. The driving method of claim 32, wherein the first light emitting element is arranged adjacently with at least one second light emitting element having a same color as the first light emitting element; in the second display mode, a gray scale displayed by the first light emitting element is greater than a gray scale displayed by the second light emitting element having the same color and arranged adjacently with the first light emitting element.

34. The driving method of claim 32, wherein in the second display mode, a picture displayed by the first light emitting element is different from a content presented by the frame picture.

35. The driving method of claim 31, wherein in the second display mode, controlling the second light emitting element to display a frame picture, and controlling the first light emitting element to not emit light.

36. The driving method of claim 31, wherein the display panel comprises a light emitting unit, the light emitting unit comprising the first light emitting element and at least two second light emitting elements having the same color and arranged adjacently with the first light emitting element; the light emitting unit comprises a first light emitting unit and / or a second light emitting unit; In the second display mode, the first light emitting element in the first light emitting unit is controlled not to emit light, the second light emitting element is controlled to emit light, and / or the first light emitting element and part of the second light emitting element in the second light emitting unit are controlled to emit light.

37. A display device comprising: The display panel as claimed in any one of claims 1-30.

Images