Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device, relates to the technical field of display, and aims to improve the large-viewing-angle peep-proof effect of the display panel. The display panel includes: a substrate; a plurality of light-emitting elements located at one side of the substrate, wherein the light-emitting elements comprise a first light-emitting unit and a second light-emitting unit; the first light blocking layer is located on the side, away from the substrate, of the first light emitting unit, and the first light blocking layer comprises a first opening; the second light blocking layer is located on the side, away from the substrate, of the first light blocking layer, and the second light blocking layer comprises a second opening; the first opening and the second opening are at least partially overlapped with the first light-emitting unit in the direction perpendicular to the plane where the substrate is located; the area of the first opening is larger than that of the second opening, and the orthographic projection of the second light blocking layer on the plane where the substrate is located at least partially covers the edge of the first opening.

Description

Technical Field

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

[0002] With the continuous development of display technology, consumers' demands for displays are constantly increasing. Currently, various types of displays, including LCD screens and OLED screens, are emerging in large numbers and have developed rapidly. Based on this, display technologies such as 3D display, touch display technology, curved display, ultra-high resolution display, and privacy-protected display are constantly emerging.

[0003] Currently, researchers are paying close attention to improving the privacy protection performance of active-matrix displays, including organic light-emitting diodes (OLEDs). Summary of the Invention

[0004] In view of this, this application provides a display panel and a display device to improve the privacy protection effect of the display panel from a wide viewing angle.

[0005] In a first aspect, embodiments of this application provide a display panel, including:

[0006] Substrate;

[0007] Multiple light-emitting elements are located on one side of the substrate, and the light-emitting elements include a first light-emitting unit and a second light-emitting unit;

[0008] A first light-blocking layer is located on the side of the first light-emitting unit away from the substrate, and the first light-blocking layer includes a first opening;

[0009] The second light-blocking layer is located on the side of the first light-blocking layer away from the substrate, and the second light-blocking layer includes a second opening;

[0010] Along a direction perpendicular to the plane of the substrate, both the first opening and the second opening at least partially overlap with the first light-emitting unit; and,

[0011] The area of ​​the first opening is larger than the area of ​​the second opening, and the orthographic projection of the second light-blocking layer onto the plane of the substrate at least partially covers the edge of the first opening.

[0012] Secondly, embodiments of this application provide a display device, including the display panel described above.

[0013] By employing the solution provided in this application embodiment, a first light-emitting unit and a second light-emitting unit are configured to illuminate at different times. Combined with the first and second light-blocking layers, when the first light-emitting unit is illuminated, viewers at a wide viewing angle cannot clearly see the display image, thus providing a wide-viewing-angle privacy effect. When the second light-emitting unit is illuminated, viewers at multiple different viewing angles can all see the display image, thus providing a sharing effect. Based on this configuration, while providing a wide-viewing-angle privacy effect, there is no need to install a privacy film on the light-emitting side of the display panel, simplifying its structure. Furthermore, this embodiment of the invention allows for convenient switching between privacy mode and sharing mode by controlling the time-sharing illumination of the first and second light-emitting units.

[0014] Furthermore, by setting a first light-blocking layer and a second light-blocking layer, making the area of ​​the first opening larger than the area of ​​the second opening, and ensuring that the orthographic projection of the second light-blocking layer onto the plane of the substrate at least partially covers the edge of the first opening, the first and second light-blocking layers can jointly limit the viewing angle of the display panel. Compared to setting only one light-blocking layer, this method achieves a wide-viewing-angle privacy protection effect for the display panel while reducing the width of the first and second light-blocking layers required for privacy protection and increasing the privacy viewing angle range. It also improves the viewing angle range in shared mode and ensures that the first and second light-emitting units have a large light-emitting area. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A top view schematic diagram of a display panel provided in an embodiment of the present invention;

[0017] Figure 2 for Figure 1 An enlarged schematic diagram of region A1 in the middle;

[0018] Figure 3 for Figure 2 A schematic diagram of a cross-section along BB';

[0019] Figure 4 This is a cross-sectional schematic diagram of a display panel in the related art;

[0020] Figure 5 This is a cross-sectional schematic diagram of another display panel in the related technology;

[0021] Figure 6 A schematic diagram of a pixel driving circuit provided in an embodiment of the present invention;

[0022] Figure 7 This is a timing diagram of a pixel driving circuit operating in privacy mode, provided by an embodiment of the present invention.

[0023] Figure 8 This is a timing diagram of a pixel driving circuit in shared mode provided by an embodiment of the present invention;

[0024] Figure 9 A schematic diagram of the optical path of the emitted light from a first light-emitting unit provided in an embodiment of the present invention;

[0025] Figure 10 This is an enlarged top view schematic diagram of a light-emitting element provided in an embodiment of the present invention;

[0026] Figure 11 for Figure 10 A schematic diagram of a cross section along CC';

[0027] Figure 12 An enlarged schematic diagram of another light-emitting element provided in an embodiment of the present invention;

[0028] Figure 13 This is an enlarged schematic diagram of a light-emitting element group provided in an embodiment of the present invention;

[0029] Figure 14 This is an enlarged schematic diagram of another light-emitting element group provided in an embodiment of the present invention;

[0030] Figure 15 This is an enlarged schematic diagram of another light-emitting element group provided in an embodiment of the present invention;

[0031] Figure 16 An enlarged schematic diagram of another display panel provided in an embodiment of the present invention;

[0032] Figure 17 for Figure 15 A schematic diagram of a cross-section along DD';

[0033] Figure 18 This is an enlarged schematic diagram of another light-emitting element group provided in an embodiment of the present invention;

[0034] Figure 19 This is an enlarged schematic diagram of another light-emitting element group provided in an embodiment of the present invention;

[0035] Figure 20 An enlarged schematic diagram of another light-emitting element provided in an embodiment of the present invention;

[0036] Figure 21for Figure 20 A schematic diagram of a cross-section along EE';

[0037] Figure 22 An enlarged schematic diagram of another light-emitting element provided in an embodiment of the present invention;

[0038] Figure 23 for Figure 22 A schematic diagram of a cross section along FF';

[0039] Figure 24 A cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention;

[0040] Figure 25 An enlarged schematic diagram of another light-emitting element provided in an embodiment of the present invention;

[0041] Figure 26 for Figure 25 A schematic diagram of a cross-section along GG';

[0042] Figure 27 for Figure 25 Another schematic diagram of a cross-section along GG';

[0043] Figure 28 for Figure 25 Another schematic diagram of a cross-section along GG';

[0044] Figure 29 for Figure 25 Another schematic diagram of a cross-section along GG';

[0045] Figure 30 This 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 this application, the embodiments of this application 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 in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0048] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application 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, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0050] This invention provides a display panel, such as... Figure 1 As shown, Figure 1 This is a top view schematic diagram of a display panel provided in an embodiment of the present invention. Figure 2 for Figure 1 An enlarged schematic diagram of region A1 in the middle. Figure 3 for Figure 2 A cross-sectional view along BB' shows that the display panel 100 includes a substrate 1 and a light-emitting element 2. The light-emitting element 2 is located on one side of the substrate 1, and includes a first light-emitting unit 21 and a second light-emitting unit 22. For example, the first light-emitting unit 21 and the second light-emitting unit 22 may emit the same color light. The first light-emitting unit 21 and the second light-emitting unit 22 may emit light separately in different operating modes of the display panel.

[0051] like Figure 2 and Figure 3 As shown, the display panel 100 further includes a first light-blocking layer 31 and a second light-blocking layer 32. The first light-blocking layer 31 is located on the side of the first light-emitting unit 21 away from the substrate 1, and the first light-blocking layer 31 includes a first opening 41. The second light-blocking layer 32 is located on the side of the first light-blocking layer 31 away from the substrate 1, and the second light-blocking layer 32 includes a second opening 42. Along a direction perpendicular to the plane of the substrate 1, both the first opening 41 and the second opening 42 at least partially overlap with the first light-emitting unit 21.

[0052] For example, such as Figure 2 and Figure 3 As shown, the first light-blocking layer 31 includes a first sub-light-blocking portion 311, and the second light-blocking layer 32 includes a second sub-light-blocking portion 321. Along a first preset direction X11 parallel to the plane of the substrate 1, the first sub-light-blocking portion 311 is located on the side of the first opening 41 away from the first light-emitting unit 21, and the second sub-light-blocking portion 321 is located on the side of the second opening 42 away from the first light-emitting unit 21. Along a direction perpendicular to the plane of the substrate 1, the first sub-light-blocking portion 311 and the first light-emitting unit 21 do not overlap, the first sub-light-blocking portion 311 and the second light-emitting unit 22 do not overlap, the second sub-light-blocking portion 321 and the first light-emitting unit 21 do not overlap, and the second sub-light-blocking portion 321 and the second light-emitting unit 22 do not overlap.

[0053] The display panel provided in this embodiment of the invention can have a wide-viewing-angle privacy protection function. The first preset direction X11 is the direction where privacy protection is required. For example, the first preset direction X11 can be the left or right side of the display panel, or the first preset direction X11 can be the top or bottom side of the display panel. Figure 1 The first preset direction X11 is used as an illustration to represent the right side of the display panel. Specifically, when the display panel is to the left of the viewer, and the viewer looks to the left while viewing the image, the viewer can be understood as being to the right of the display panel. When the display panel is to the right of the viewer, and the viewer looks to the right while viewing the image, the viewer can be understood as being to the left of the display panel. When the display panel is below the viewer, and the viewer looks down while viewing the image, the viewer can be understood as being to the top of the display panel. When the display panel is above the viewer, and the viewer looks up while viewing the image, the viewer can be understood as being to the bottom of the display panel.

[0054] For example, the display panel provided in this embodiment of the invention includes a sharing mode and a privacy mode. The viewing angle of the display panel in sharing mode is greater than that in privacy mode. For instance, the maximum viewing angle of the display panel in privacy mode is 45° (viewing angle range of 0-45°), meaning that a viewer viewing the display panel from an angle greater than 45° will not be able to clearly see or see the displayed image. The maximum viewing angle of the display panel in sharing mode is at least 60° (corresponding to a viewing angle range of 0-60°), and some display panels require a maximum viewing angle of 65° (viewing angle range of 0-65°) in sharing mode. Of course, the maximum viewing angle in sharing mode can be adjusted according to user needs.

[0055] In this embodiment of the invention, the first light-emitting unit 21 can serve as a privacy pixel illuminated in privacy mode; the second light-emitting unit 22 can serve as a shared pixel illuminated in sharing mode. Alternatively, both the first light-emitting unit 21 and the second light-emitting unit 22 can be illuminated in sharing mode to increase the brightness of the display panel. For ease of explanation, this invention will only be explained using the example of illuminating only the second light-emitting unit 22 in sharing mode.

[0056] In privacy mode, the first light-emitting unit 21 is lit, such as Figure 3 As shown, the small-angle light emitted by the first light-emitting unit 21, such as Figure 3The first ray L11 shown can bypass the first sub-light-blocking part 311 and the second sub-light-blocking part 321, and exit the display panel 100 through the first opening 41 and the second opening 42 in sequence, so that viewers at a smaller viewing angle, such as those at a normal viewing angle, can see the display image. Here, "small-angle ray" refers to ray emitted by the first light-emitting unit 21 whose exit angle is less than or equal to a first preset angle. The first preset angle can be set according to the privacy viewing angle requirements of different viewing sides of the display panel. The exit angle of the ray is the angle between the propagation direction and the normal to the substrate 1.

[0057] In embodiments of the present invention, such as Figure 2 and Figure 3 As shown, the area of ​​the first opening 41 is larger than the area of ​​the second opening 42, and the orthographic projection of the second light-blocking layer 32 onto the plane of the substrate 1 at least partially covers the edge of the first opening 41.

[0058] In privacy mode, the wide-angle light emitted by the first light-emitting unit 21 can be blocked by the first sub-light-blocking part 311 or the second sub-light-blocking part 321 and cannot exit the display panel, thereby achieving a wide-viewing-angle privacy effect on the display panel 100. Here, wide-angle light refers to light emitted by the first light-emitting unit 21 with an emission angle greater than a first preset angle. Specifically, as... Figure 3 As shown, the second light ray L12 emitted by the first light-emitting unit 21 can be blocked by the first sub-light-blocking part 311 and cannot exit the display panel, and the third light ray L13 can be blocked by the second sub-light-blocking part 321 and cannot exit the display panel. The exit angle of the third light ray L13 is smaller than that of the second light ray L12.

[0059] In this embodiment of the invention, the second light-emitting unit 22 can serve as a shared pixel that is lit up in the shared mode.

[0060] In privacy mode, the second light-emitting unit 22 is turned off.

[0061] In shared mode, the second light-emitting unit 22 is lit, and the small-angle light emitted by the second light-emitting unit 22, such as... Figure 3 The fourth ray L21 shown can exit the display panel. Also, the large-angle ray emitted by the second light-emitting unit 22, such as... Figure 3 The fifth ray L22 shown can bypass the first light-blocking layer 31 and the second light-blocking layer 32 and be emitted from the display panel, so that viewers at both the normal viewing angle and the wide viewing angle can see the display screen, achieving the effect of multiple viewers watching the screen at the same time.

[0062] The display panel provided in this embodiment of the invention, by setting a first light-emitting unit 21 and a second light-emitting unit 22, allows them to be lit in a time-sharing manner. Combined with the aforementioned first light-blocking layer 31 and second light-blocking layer 32, when the first light-emitting unit 21 is lit, viewers at a wide viewing angle cannot clearly see the display image, thus providing a wide-viewing-angle privacy effect. When the second light-emitting unit 22 is lit, viewers at multiple different viewing angles can all see the display image, thus providing a sharing effect. Based on this arrangement, while providing a wide-viewing-angle privacy effect, there is no need to set a privacy film on the light-emitting side of the display panel, allowing for a thinner and lighter design. Furthermore, this embodiment of the invention allows for convenient switching between privacy mode and sharing mode by controlling the time-sharing lighting of the first light-emitting unit 21 and the second light-emitting unit 22.

[0063] Furthermore, by providing a first light-blocking layer 31 and a second light-blocking layer 32, and ensuring that the area of ​​the first opening 41 is larger than the area of ​​the second opening 42, and that the orthographic projection of the second light-blocking layer 32 onto the plane of the substrate 1 at least partially covers the edge of the first opening 41, the first light-blocking layer 31 and the second light-blocking layer 32 can jointly limit the viewing angle of the display panel. Compared to providing only one light-blocking layer, this method achieves a wide-viewing-angle privacy protection effect on the display panel while reducing the width of the first light-blocking layer 31 and the second light-blocking layer 32 required for privacy protection, and increasing the privacy viewing angle range. It also improves the viewing angle range in shared mode.

[0064] Combination Figure 3 and Figure 4 As shown, Figure 4 This is a cross-sectional schematic diagram of a display panel in the related art, and... Figure 3 compared to, Figure 4 The second light-blocking layer has been removed, leaving only the first light-blocking layer 31. Figure 4 In the middle, to block Figure 3 The third ray L13 shown requires at least moving the edge E11' of the first sub-light blocking part 311 near the first light-emitting unit 21 to the side closer to the first light-emitting unit 21. Figure 4 As indicated by the dashed line, this will cause the distance between the edge E11' of the first sub-light-blocking part 311 and the first light-emitting unit 21 in the first preset direction X11 to decrease, and may even result in... Figure 4 The overlapping of the first sub-light blocking part 311 and the first light emitting unit 21 in a direction perpendicular to the plane of the substrate 1 will affect the brightness of the light emitted by the first light emitting unit 21 at a positive viewing angle.

[0065] In embodiments of the present invention, such as Figure 3As shown, the second light-blocking part 321 can block a portion of the large-angle light emitted by the first light-emitting unit 21, such as... Figure 3 The third ray L13 in the display panel 100 can increase the distance d1 between the first sub-light blocking part 311 and the first light-emitting unit 21, while preventing the third ray L13 from being emitted out of the display panel 100. This prevents the first sub-light blocking part 311 from blocking the small-angle light emitted by the first light-emitting unit 21, which is beneficial to improving the brightness of the display panel at the front viewing angle in privacy mode.

[0066] Furthermore, if only the first light-blocking layer 31 is provided without the second light-blocking layer, and the distance between the first edge E11 of the first sub-light-blocking part 311 and the first light-emitting unit 21 is arranged according to... Figure 3 As shown, it is set to d1, such as Figure 4 As shown, the third ray L13 will leak out from the display panel 100 through the first opening 41, so that the viewer at the wide viewing angle of the display panel in the first preset direction X11 can still see the display screen. That is, the privacy viewing angle range of the display panel in the first preset direction X11 will be reduced, and the privacy effect cannot be well achieved.

[0067] Combination Figure 3 and Figure 5 As shown, Figure 5 This is a cross-sectional schematic diagram of another display panel in the related technology, and... Figure 3 compared to, Figure 5 The first light-blocking layer has been removed, leaving only the second light-blocking layer 32. Figure 5 In order to block the second light ray L12 emitted by the first light-emitting unit 21 with a large emission angle, it is necessary to move the edge E22' of the second sub-light-blocking part 321 away from the first light-emitting unit 21 to a side away from the first light-emitting unit 21. Figure 5 The position indicated by the dashed line, when the first light-emitting unit 21 and the second light-emitting unit 22 are arranged along the first preset direction X11 and the distance P between them is constant, is as follows: Figure 5 As shown, removing the first light-blocking layer will reduce the distance between the edge E22' of the second sub-light-blocking part 321 and the second light-emitting unit 22 in the first preset direction X11. The fifth light ray L22 emitted by the second light-emitting unit 22, which was originally able to avoid the second sub-light-blocking part 321, will be blocked by the second sub-light-blocking part 321' and will not be able to be emitted from the display panel.

[0068] based on Figure 5In the arrangement shown, in order for the fifth ray L22 emitted by the second light-emitting unit 22 to avoid the second sub-light-blocking part 321', it is necessary to increase the distance P between the first light-emitting unit 21 and the second light-emitting unit 22 or reduce the area of ​​the second light-emitting unit 22, which will result in a decrease in the resolution of the display panel or affect the aperture ratio of the second light-emitting unit 22.

[0069] In embodiments of the present invention, such as Figure 3 As shown, the first sub-light-blocking part 311 can block a portion of the large-angle light emitted by the first light-emitting unit 21, such as... Figure 3 The second light ray L12 is used to prevent the second light ray L12 from escaping the display panel. When the first light-emitting unit 21 and the second light-emitting unit 22 are arranged along the first preset direction X11, the distance between the third edge E22 of the second light-emitting unit 321 and the second light-emitting unit 22 can be increased based on the setting of the first sub-light-blocking part 311. This prevents the second sub-light-blocking part 321 from blocking the light emitted by the second light-emitting unit 22, which is beneficial to improving the display effect of the display panel in the shared mode.

[0070] Furthermore, if the distance between the third edge E22 of the second sub-light-blocking part 321 and the second light-emitting unit 22 is maintained according to Figure 3 As shown, d2 is used when only the second light-blocking layer 32 is used, without the first light-blocking layer. Figure 5 As shown, the second light L12 will bypass the second light-blocking part 321 and leak out from the display panel 100, so that viewers at a wide viewing angle of the display panel can still see the display screen. That is, the privacy viewing angle of the display panel will be reduced, and the privacy effect cannot be achieved well.

[0071] In summary, the embodiments of the present invention, by setting a first light-blocking layer 31 and a second light-blocking layer 32, making the area of ​​the first opening 41 larger than the area of ​​the second opening 42, and ensuring that the orthographic projection of the second light-blocking layer 32 on the plane of the substrate 1 at least partially covers the edge of the first opening 41, allow the first light-blocking layer 31 and the second light-blocking layer 32 to jointly limit the viewing angle of the display panel. Compared with setting only one light-blocking layer, this method achieves a wide viewing angle privacy effect for the display panel 100 while reducing the width of the first light-blocking layer 31 and the second light-blocking layer 32 required for privacy protection, and increasing the privacy viewing angle range. Furthermore, it also improves the viewing angle range in shared mode and ensures that the first light-emitting unit 21 and the second light-emitting unit 22 have a large surface light-emitting area.

[0072] For example, in embodiments of the present invention, the first light-emitting unit 21 and the second light-emitting unit 22 can be driven separately.

[0073] In one alternative implementation, combined with Figure 6, Figure 7 and Figure 8 As shown, Figure 6 This is a circuit diagram of a pixel driving circuit provided in an embodiment of the present invention. Figure 7 This is a timing diagram of a pixel driving circuit operating in privacy mode according to an embodiment of the present invention. Figure 8 This is a timing diagram of a pixel driving circuit operating in shared mode according to an embodiment of the present invention. The display panel further includes a pixel driving circuit 60, which includes a first light-emitting control module 611, a second light-emitting control module 621, a third light-emitting control module 622, a gate reset module 63, a first anode reset module 641, a second anode reset module 642, a data writing module 65, a threshold compensation module 66, and a storage capacitor Cst.

[0074] The gate reset module 63 includes a gate reset transistor M1, which is electrically connected between the first reset signal line Ref1 and the gate of the driving transistor M0. It is used to reset the gate of the driving transistor M0 in response to the effective level provided by the first scan signal line S1.

[0075] The first anode reset module 641 includes a first anode reset transistor M21, which is electrically connected between the second reset signal line Ref2 and the first light-emitting unit 21. It is used to reset the anode voltage of the first light-emitting unit 21 in response to the effective level provided by the second scan signal line S2.

[0076] The second anode reset module 642 includes a second anode reset transistor M22, which is electrically connected between the second reset signal line Ref2 and the second light-emitting unit 22. It is used to reset the anode voltage of the second light-emitting unit 22 in response to the effective level provided by the second scan signal line S2.

[0077] The data writing module 65 includes a data writing transistor M3, which is electrically connected between the data line Data and the first terminal of the driving transistor M0. The threshold compensation module 66 includes a threshold compensation transistor M4, which is electrically connected between the second terminal of the driving transistor M0 and the gate of the driving transistor M0. The data writing transistor M3 and the threshold compensation transistor M4 are used to write the data voltage to the gate of the driving transistor M0 and perform threshold compensation on the driving transistor M0 in response to an effective level provided by the second scan signal line S2.

[0078] The first light-emitting control module 611 includes a first light-emitting control transistor M5, which is electrically connected between the power signal line PVDD and the first terminal of the driving transistor M0.

[0079] The second light-emitting control module 621 includes a second light-emitting control transistor M61, which is electrically connected between the second terminal of the driving transistor M0 and the first light-emitting unit 21.

[0080] The third light-emitting control module 622 includes a third light-emitting control transistor M62, and the second light-emitting control transistor M62 is electrically connected between the second electrode of the driving transistor M0 and the second light-emitting unit 22.

[0081] For example, in privacy mode, combined with Figure 6 and Figure 7 As shown, the pixel driving circuit 60, in response to the enable level provided by the first light-emitting control signal line E1 and the second light-emitting control signal line E2, transmits the driving current converted by the driving transistor M0 to the first light-emitting unit 21, driving the first light-emitting unit 21 to emit light. And, in response to the disable level provided by the third light-emitting control signal line E3, the second light-emitting unit 22 is prevented from emitting light.

[0082] In the sharing model, combined Figure 6 and Figure 8 As shown, the pixel driving circuit 60, in response to the enable levels provided by the first light-emitting control signal line E1 and the third light-emitting control signal line E3, transmits the driving current converted by the driving transistor M0 to the second light-emitting unit 22 to emit light. Furthermore, in response to the disable level provided by the second light-emitting control signal line E2, it controls the transmission path between the pixel driving circuit 60 and the first light-emitting unit 21 to be turned off, causing the first light-emitting unit 21 to not emit light.

[0083] Based on the above structure, the first light-emitting unit 21 and the second light-emitting unit 22 can share the driving current provided by the same pixel driving circuit 60 to emit light, which simplifies the circuit design of the display panel 100 and the space occupied by the pixel driving circuit 60 in the display panel 100, and is conducive to improving pixel density.

[0084] Understandably, reference Figure 6 In order to increase the brightness of the display panel in the shared mode, the first light-emitting unit 21 and the second light-emitting unit 22 can be driven to emit light in the shared mode. At this time, the first light-emitting control signal line E1, the second light-emitting control signal line E2 and the third light-emitting control signal line E3 need to provide an enable level during the light-emitting stage.

[0085] Understandable Figure 6 The example described uses the first light-emitting unit 21 and the second light-emitting unit 22 sharing a single pixel driving circuit 60. In actual design, the first light-emitting unit 21 and the second light-emitting unit 22 can also be driven by different pixel driving circuits, which will not be elaborated here.

[0086] For example, such as Figure 2 and Figure 3 As shown, along the first preset direction X11, the first sub-light blocking part 311 includes a first edge E11 near the first light-emitting unit 21, and the second sub-light blocking part 321 includes a second edge E21 near the first light-emitting unit 21.

[0087] like Figure 3 As shown, the display panel also includes a pixel definition layer 5, which includes a third opening 43 and a fourth opening 44. At least a portion of the first light-emitting unit 21 is located within the third opening 43, and at least a portion of the second light-emitting unit 22 is located within the fourth opening 44.

[0088] like Figure 2 and Figure 3 As shown, along the first preset direction X11, the shortest distance between the first edge E11 and the third opening 43 is d1, and the shortest distance between the second edge E21 and the third opening 43 is d3. Along a direction perpendicular to the plane of the substrate 1, the shortest distance between the surface of the second sub-light-blocking portion 321 away from the substrate 1 and the surface of the first light-emitting unit 21 away from the substrate 1 is h1. The first light-emitting unit 21 may include a first electrode, a light-emitting layer, and a second electrode stacked together. The surface of the first light-emitting unit 21 away from the substrate 1 can be the surface of the light-emitting layer in the first light-emitting unit 21 away from the substrate 1. For example... Figure 2 and Figure 3 As shown, along the first preset direction X11, the length of the third opening 43 is a1.

[0089] In this embodiment of the invention, d3+a1≤tan(arcsin(n2×sinθ / n1))×h1, where θ is the maximum viewing angle in privacy mode. For example, for display panels with different privacy requirements, θ can be 28°, 30°, or 45°. n1 is the panel refractive index, and n2 is the air refractive index. The panel refractive index can be understood as the equivalent refractive index of multiple film layers on the side of the first light-emitting unit 21 near the light-emitting side of the display panel. Based on this setting, (d3+a1) / h1≤tan(arcsin(n2×sinθ / n1)). Figure 9 As shown, Figure 9 This invention provides a schematic diagram of the optical path of the emitted light from a first light-emitting unit, as shown in the embodiment of the invention. That is, to make in, The maximum value of the exit angle of the light emitted by the first light-emitting unit 21 and exiting through the second opening 42 is θ. That is, the maximum value of the exit angle of the light emitted by the first light-emitting unit 21 and exiting through the second opening 42 is less than or equal to θ. The light emitted by the first light-emitting unit 21 with an exit angle greater than θ is directed towards the second sub-light-blocking part 321 or the first sub-light-blocking part 311 and blocked by the second sub-light-blocking part 321 or the first sub-light-blocking part 311, thereby satisfying the privacy viewing angle requirements of the display panel in the left and right directions.

[0090] Optionally, n1 can be 1.42, n2 can be 1, and θ can be 45°. In this case, the calculation yields: d3 + a1 ≤ tan30° × h1. Based on this configuration, the exit angle of the light emitted by the first light-emitting unit 21 and exiting through the second opening 42 can be less than or equal to 45°.

[0091] It should be noted that the above d3 can be a positive value or a negative value. When d3 is a negative value, it indicates that the orthogonal projection of the second edge E21 onto the plane of the substrate 1 is located within the third opening 43.

[0092] Optionally, in embodiments of the present invention, d3 ≥ 0 can be set. For example, in embodiments of the present invention, d3 = 0 can be set, that is, the orthographic projection of the second edge E21 on the plane where the substrate 1 is located can be made to coincide with the edge of the first light-emitting unit 21.

[0093] For example, such as Figure 2 and Figure 3 As shown, along the first preset direction X11, the second sub-light-blocking part 321 includes a third edge E22 that is away from the first light-emitting unit 21, and the shortest distance between the first edge E11 and the third edge E22 is d13. Figure 3 As shown, along the first preset direction X11, the third opening 43 includes a first opening edge EK1 away from the second sub-light blocking part 321, and the maximum angle between the line connecting the first opening edge EK1 and the third edge E22 and the normal of the substrate 1 is α1.

[0094] Along a direction perpendicular to the plane of substrate 1, the shortest distance between the surface of the first sub-light-blocking part 311 away from substrate 1 and the surface of the second sub-light-blocking part 321 away from substrate 1 is h12, such as... Figure 3 As shown. In this embodiment of the invention, d13≥h12×tanα1. Based on this setting, the first sub-light-blocking part 311 and the second sub-light-blocking part 321 can absorb more of the large-angle light emitted by the first light-emitting unit 21, ensuring that the large-angle light emitted by the first light-emitting unit 21 will not be emitted between the first sub-light-blocking part 311 and the second sub-light-blocking part 321, thereby improving the privacy protection effect of the display panel in the first preset direction X11.

[0095] Optional, such as Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment of the invention, the first light-emitting unit 21 and the second light-emitting unit 22 can be arranged along the aforementioned first preset direction X11. Figure 2 and Figure 3 As shown, along a first preset direction X11 parallel to the plane where the substrate 1 is located, the first sub-light blocking part 311 is located on the side of the first opening 41 close to the second light-emitting unit 22.

[0096] like Figure 2 and Figure 3 As shown, along the first preset direction X11, the minimum distance between the third edge E22 of the second sub-light-blocking part 321 and the second light-emitting unit 22 is d2, and the shortest distance between the first sub-light-blocking part 311 and the fourth opening 44 is d4. Figure 3 As shown, along a direction perpendicular to the plane of substrate 1, the shortest distance between the surface of the second sub-light-blocking part 321 away from substrate 1 and the surface of the first light-emitting unit 21 away from substrate 1 is h1; the shortest distance between the surface of the second light-emitting unit 22 away from substrate 1 and the surface of the first sub-light-blocking part 311 away from substrate 1 is h2. The second light-emitting unit 22 may include a first electrode, a light-emitting layer, and a second electrode stacked together. The surface of the second light-emitting unit 22 away from substrate 1 can be the surface of the light-emitting layer in the second light-emitting unit 22 away from substrate 1. Wherein, d4 ≥ d2 × h2 / h1. Based on this arrangement, d4 / h2 ≥ d2 / h1 can be achieved, thus allowing the large-angle light emitted by the second light-emitting unit 22 directed towards the third edge E22 to smoothly avoid the first sub-light-blocking part 311, which is beneficial for meeting the brightness requirements of the shared viewing angle of the display panel in the first preset direction X11.

[0097] like Figure 2 and Figure 3As shown, the shortest distance between the surface of the second light-emitting unit 22 away from the substrate 1 and the surface of the first sub-light-blocking part 311 away from the substrate 1 is h2. The second light-emitting unit 22 may include a first electrode, a light-emitting layer, and a second electrode stacked together. The surface of the second light-emitting unit 22 away from the substrate 1 can be the surface of the light-emitting layer in the second light-emitting unit 22 away from the substrate 1. In this embodiment of the invention, a2+d2≥tan(arcsin(n2×sinβ / n1))×h1. Here, β is the maximum viewing angle in the shared mode, n1 is the panel refractive index, and n2 is the air refractive index. The panel refractive index can be understood as the equivalent refractive index of multiple film layers located on the side of the second light-emitting unit 22 near the light-emitting side of the display panel. Based on this configuration, the emission angle of the light emitted by the second light-emitting unit 22 towards the first preset direction X11 and avoiding the light emitted by the second sub-light-blocking part 321 is greater than or equal to β. In other words, the light emitted by the second light-emitting unit 22 towards the first preset direction X11 with an emission angle greater than β can smoothly avoid the second sub-light-blocking part 321, which helps to meet the shared viewing angle requirement of the display panel in the first preset direction X11. Furthermore, this configuration eliminates the need to increase the distance between the first light-emitting unit 21 and the second light-emitting unit 22, and also eliminates the need to reduce the area of ​​either the first light-emitting unit 21 or the second light-emitting unit 22, thus ensuring that both the first light-emitting unit 21 and the second light-emitting unit 22 have a large light-emitting area.

[0098] Optionally, n1 can be 1.42, n2 can be 1, and β can be 90°. In this case, the calculation yields: d2+a2≥tan45°×h1=h1.

[0099] For example, such as Figure 10 and Figure 11 As shown, Figure 10 This is an enlarged schematic diagram of a light-emitting element provided in an embodiment of the present invention. Figure 11 for Figure 10 A cross-sectional view along CC' shows that the first light-blocking layer 31 further includes a third sub-light-blocking portion 312, and the second light-blocking layer 32 further includes a fourth sub-light-blocking portion 322. Along a second preset direction X12 parallel to the plane where the substrate 1 is located, the third sub-light-blocking portion 312 is located on the side of the first opening 41 away from the first light-emitting unit 21; the fourth sub-light-blocking portion 322 is located on the side of the second opening 42 away from the first light-emitting unit 32. The second preset direction X12 and the first preset direction X11 intersect. Figure 10 The second preset direction X12 and the first preset direction X11 are perpendicular as an illustration.

[0100] like Figure 10 and Figure 11As shown, along the second preset direction X12, the third sub-light-blocking part 312 includes a fifth edge E13 near the first light-emitting unit 21, and the fourth sub-light-blocking part 322 includes a sixth edge E23 near the first light-emitting unit 21; the shortest distance between the fifth edge E13 and the first light-emitting unit 21 is d5, and the shortest distance between the sixth edge E23 and the first light-emitting unit 21 is d6. Along a direction perpendicular to the plane of the substrate 1, the shortest distance between the surface of the fourth sub-light-blocking part 322 away from the substrate 1 and the surface of the first light-emitting unit 21 away from the substrate 1 is h3. The first light-emitting unit 21 may include a first electrode, a light-emitting layer, and a second electrode stacked together. The surface of the first light-emitting unit 21 away from the substrate 1 may be the surface of the light-emitting layer in the first light-emitting unit 21 away from the substrate 1. Along the second preset direction X12, the length of the third opening 43 is a2.

[0101] In this embodiment of the invention, d6+a2≤tan(arcsin(n2×sinθ / n1))×h3; θ is the maximum viewing angle in the privacy mode. For example, for display panels with different privacy requirements, θ can be 28°, 30°, or 45°. n1 is the panel refractive index, and n2 is the air refractive index. The panel refractive index can be understood as the equivalent refractive index of multiple film layers on the side of the first light-emitting unit 21 near the light-emitting side of the display panel. Based on this configuration, the emission angle of the light emitted by the first light-emitting unit 21 towards the second preset direction X12 and exiting through the second opening 42 can be less than or equal to θ. Light emitted by the first light-emitting unit 21 towards the second preset direction X12 with an emission angle greater than θ is directed towards the fourth sub-light-blocking part 322 or the third sub-light-blocking part 312 and blocked by them, thus satisfying the privacy viewing angle requirements of the display panel in the vertical direction.

[0102] Optionally, n1 can be 1.42, n2 can be 1, and θ can be 45°. In this case, the calculation yields: d6 + a2 ≤ tan30° × h3. Based on this setting, the exit angle of the light emitted by the first light-emitting unit 21 and exiting through the second opening 42 can be less than or equal to 45°.

[0103] It should be noted that the above-mentioned d6 can be a positive value or a negative value. When d6 is negative, it indicates that the orthogonal projection of the sixth edge E23 on the plane where the substrate 1 is located is located within the third opening 43.

[0104] For example, the first preset direction X11 can correspond to the left or right side of the display panel. The second preset direction X12 can correspond to the top or bottom side of the display panel.

[0105] In an optional embodiment, the present invention can use the display panel as an in-vehicle display screen. In this case, the first preset direction X11 can be approximately parallel to the arrangement direction of the driver's seat and the passenger seat. In privacy mode, the arrangement of the first sub-light-blocking part 311 and the second sub-light-blocking part 321 can prevent the display content of the in-vehicle display screen located in the passenger seat from interfering with the driver in the driver's seat, thus improving driving safety. The second preset direction X12 can be the vertical direction of the display panel, which is approximately parallel to the arrangement direction of the in-vehicle display screen and the windshield. In privacy mode, the arrangement of the third sub-light-blocking part 312 and the fourth sub-light-blocking part 322 can prevent the display content of the in-vehicle display screen located in the passenger seat from being reflected into the driver's eyes by the windshield, thus improving driving safety.

[0106] Optionally, in this embodiment of the invention, d6 ≥ 0 can be set. Alternatively, in this embodiment of the invention, d6 = 0 can be set. That is, the orthographic projection of the sixth edge E23 onto the plane of the substrate 1 is made to coincide with the edge of the first light-emitting unit 21.

[0107] For example, such as Figure 10 and Figure 11 As shown, along the second preset direction X12, the fourth sub-light-blocking part 322 includes a seventh edge E24 that is far away from the first light-emitting unit 21. The shortest distance between the seventh edge E24 and the fifth edge E13 is d57.

[0108] like Figure 11 As shown, along the second preset direction X12, the third opening 43 includes a second opening edge EK2 away from the fifth edge E13, and the maximum angle between the line connecting the second opening edge EK2 and the seventh edge E24 and the normal of the substrate 1 is α2.

[0109] Along a direction perpendicular to the plane of substrate 1, the shortest distance between the surface of the third sub-light blocking part 312 away from substrate 1 and the surface of the fourth sub-light blocking part 322 away from substrate 1 is h34.

[0110] In this embodiment of the invention, d57 ≥ h34 × tanα2. Based on this setting, the third sub-light-blocking part 312 and the fourth sub-light-blocking part 322 can absorb more of the large-angle light emitted by the first light-emitting unit 21 toward the second preset direction X12, ensuring that the large-angle light emitted by the first light-emitting unit 21 toward the second preset direction X12 will not be emitted between the third sub-light-blocking part 312 and the fourth sub-light-blocking part 322, thereby improving the privacy protection effect of the display panel in the second preset direction X12.

[0111] For example, such as Figure 12 As shown, Figure 12This is an enlarged schematic diagram of another light-emitting element provided in an embodiment of the present invention. In this embodiment, a fifth sub-light-blocking portion 313 and a sixth sub-light-blocking portion 314 may be provided in the first light-blocking layer 31, and a seventh sub-light-blocking portion 323 and an eighth sub-light-blocking portion 324 may be provided in the second light-blocking layer 32. Along a third preset direction X13, the fifth sub-light-blocking portion 313 is located on the side of the first opening 41 away from the first light-emitting unit 21, and the seventh sub-light-blocking portion 323 is located on the side of the second opening 42 away from the first light-emitting unit 21. Along a fourth preset direction X14, the sixth sub-light-blocking portion 314 is located on the side of the first opening 41 away from the first light-emitting unit 21, and the eighth sub-light-blocking portion 324 is located on the side of the second opening 42 away from the first light-emitting unit 21. For example, the third preset direction X13 may be the opposite direction of the first preset direction X11. The fourth preset direction X14 may be the opposite direction of the second preset direction X12. Based on this configuration, the first sub-light-blocking part 311, the third sub-light-blocking part 312, the fifth sub-light-blocking part 313, and the sixth sub-light-blocking part 314 surround to form the first opening 41, and the second sub-light-blocking part 321, the fourth sub-light-blocking part 322, the seventh sub-light-blocking part 323, and the eighth sub-light-blocking part 324 surround to form the second opening 42. This allows the display panel to also have a wide-viewing-angle privacy protection effect in the third preset direction X13 and the fourth preset direction X14, that is, to enable the display panel to achieve multi-directional privacy protection.

[0112] In embodiments of the present invention, such as Figure 1 As shown, the display panel 100 includes multiple light-emitting element groups 20, each light-emitting element group 20 including a first color sub-light-emitting element 201, a second color sub-light-emitting element 202, and a third color sub-light-emitting element 203; within the same light-emitting element group 20, such as Figure 2 As shown, the third color sub-light-emitting element 203 and the first color sub-light-emitting element 201 are arranged along the first direction X21, and the third color sub-light-emitting element 203 and the second color sub-light-emitting element 202 are arranged along the first direction X21; the first color sub-light-emitting element 201 and the second color sub-light-emitting element 202 are arranged along the second direction X22, and the first direction X21 and the second direction X22 intersect.

[0113] In an embodiment of the present invention, at least one of the first color sub-light-emitting element 201, the second color sub-light-emitting element 202, and the third color sub-light-emitting element 203 includes a first light-emitting unit 21 and a second light-emitting unit 22.

[0114] For example, the first color sub-light-emitting element 201 includes a first light-emitting unit 21 and a second light-emitting unit 22; or, the second color sub-light-emitting element 202 includes a first light-emitting unit 21 and a second light-emitting unit 22; or, the third color sub-light-emitting element 203 includes a first light-emitting unit 21 and a second light-emitting unit 22; or, both the first color sub-light-emitting element 201 and the second color sub-light-emitting element 202 include a first light-emitting unit 21 and a second light-emitting unit 22; or, both the second color sub-light-emitting element 202 and the third color sub-light-emitting element 203 include a first light-emitting unit 21 and a second light-emitting unit 22; or, both the first color sub-light-emitting element 201 and the third color sub-light-emitting element 203 include a first light-emitting unit 21 and a second light-emitting unit 22. Alternatively, all three of them—the first color sub-light-emitting element 201, the second color sub-light-emitting element 202, and the third color sub-light-emitting element 203—include a first light-emitting unit 21 and a second light-emitting unit 22.

[0115] Figure 1 The first color sub-light-emitting element 201, the second color sub-light-emitting element 202, and the third color sub-light-emitting element 203 all include the first light-emitting unit 21 and the second light-emitting unit 22 as an illustration.

[0116] It should be noted that the first light-emitting unit 21 and the second light-emitting unit 22 in the first color sub-light-emitting element 201 both emit light of the first color, the first light-emitting unit 21 and the second light-emitting unit 22 in the second color sub-light-emitting element 202 both emit light of the second color, and the first light-emitting unit 21 and the second light-emitting unit 22 in the third color sub-light-emitting element 203 both emit light of the third color.

[0117] For example, such as Figure 2 As shown, in this embodiment of the invention, the first direction X21 can be parallel to the first preset direction X11, and the second direction X22 can be parallel to the second preset direction X12.

[0118] When configuring the first light-emitting unit 21 and the second light-emitting unit 22 as described above, for example, such as Figure 1 , Figure 2 and Figure 10 As shown, in the same light-emitting element 2, in this embodiment of the invention, the first light-emitting unit 21 and the second light-emitting unit 22 can be arranged along the first direction X21. In this case, as... Figure 2 and Figure 10 As shown, along the first direction X21, the first sub-light-blocking part 311 and the second sub-light-blocking part 312 are located between the first light-emitting unit 21 and the second light-emitting unit 22, and the display panel has a privacy protection effect in the first direction X21. Figure 10As shown, along the second direction X22, the third sub-light blocking part 312 and the fourth sub-light blocking part 322 are located on the side of the first opening 41 and the second opening 42 away from the first light-emitting unit 22, respectively, and the display panel has a privacy protection effect in the second direction X22.

[0119] Apart from Figure 1 and Figure 10 Except for the case shown where the first light-emitting unit 21 and the second light-emitting unit 22 in the same light-emitting element 2 are arranged along the first direction X21, as shown in the example Figure 13 As shown, Figure 13 This is an enlarged schematic diagram of a light-emitting element group provided in an embodiment of the present invention. In the same light-emitting element 2, the first light-emitting unit 21 and the second light-emitting unit 22 are arranged along the second direction X22.

[0120] Based on this configuration, a first sub-light-blocking part 311 and a second sub-light-blocking part 321 are provided on one side of the first light-emitting unit 21 in the first direction X21. This satisfies the privacy requirements of the display panel 100 in the first direction X21, while also shortening the length of the first and second sub-light-blocking parts located on both sides of the second light-emitting unit 22 in the first direction X21. It can even avoid the need to provide the first and second sub-light-blocking parts on both sides of the second light-emitting unit 22 in the first direction X21. Figure 13 As shown, the first and second light-blocking parts may not be provided on both sides of the second light-emitting unit 22 in the first direction X21 of the second color sub-light-emitting element 202. In the sharing mode, the large-angle light emitted by the second light-emitting unit 22 toward the first direction X21 can be emitted in more directions without being blocked by the first and second light-blocking parts, which is beneficial to improving the sharing effect of the display panel in the first direction X21.

[0121] Figure 13 To illustrate that the display panel has a privacy protection effect in the first preset direction X11 and the third preset direction X13, or, as shown Figure 14 As shown, Figure 14 This is an enlarged schematic diagram of another light-emitting element group provided in an embodiment of the present invention. When the first light-emitting unit 21 and the second light-emitting unit 22 in the same light-emitting element 2 are arranged along the second direction X22, the embodiment of the present invention may also provide the above-mentioned third sub-light-blocking part 312 and fourth sub-light-blocking part 322 on one side of the first light-emitting unit 21 in the second direction X22, so that the display panel has a privacy protection effect in the second direction X22.

[0122] For example, such as Figure 15 and Figure 16 As shown, Figure 15 This is an enlarged schematic diagram of another light-emitting element group provided in an embodiment of the present invention. Figure 16This is an enlarged schematic diagram of another display panel provided in an embodiment of the present invention. Figure 15 In the same light-emitting element 2, there are at least two first light-emitting units 21, and along the second direction X22, the second light-emitting unit 22 and the at least two first light-emitting units 21 belonging to the same light-emitting element 2 at least partially overlap. Figure 16 In, multiple such Figure 15 The light-emitting element group 20 shown is arranged in an array in the first direction X11 and the second direction X12.

[0123] In this embodiment of the invention, the thicknesses of the first light-blocking layer 31 and the second light-blocking layer 32 are related to the length of the first light-emitting unit 21 in the direction where privacy protection is required. Figure 15 Taking the privacy requirements along the first preset direction X11 and the third preset direction X13 as an example, and with the first preset direction X11 parallel to the first direction X21, the greater the length of the first light-emitting unit 21 along the first direction X11, the greater the thickness of the first sub-light-blocking part 311 and the second sub-light-blocking part 312 required for privacy protection, and the higher the requirements for the manufacturing process capabilities of the first sub-light-blocking part 311 and the second sub-light-blocking part 312. In this embodiment of the invention, by setting at least two first light-emitting units 21 in the same light-emitting element 2, and along the second direction X22, by at least partially overlapping the second light-emitting unit 22 with at least two first light-emitting units 21 belonging to the same light-emitting element 2, the length of a single first light-emitting unit 21 along the first direction X11 can be reduced compared to setting only one first light-emitting unit 21. This reduces the thickness of the first sub-light-blocking part 311 and the second sub-light-blocking part 312 required for privacy protection, and lowers the manufacturing process difficulty of the display panel.

[0124] For example, in this embodiment of the invention, the area of ​​the third opening 43 is less than or equal to the area of ​​the fourth opening 44, so as to ensure that the display panel has a large light-emitting area in the sharing mode, thereby ensuring the brightness in the sharing mode. Furthermore, the thickness of the first light-blocking layer 31 and the second light-blocking layer 32 required for privacy protection is reduced, thus reducing the manufacturing process difficulty of the display panel.

[0125] Optional, such as Figure 17 As shown, Figure 17 for Figure 15 A cross-sectional view along DD' shows that the first light-emitting unit 21 includes a first electrode 11, a second electrode 12, and a light-emitting layer 13. Exemplarily, the first electrode 11 includes an anode, and the second electrode 12 includes a cathode. In this embodiment of the invention, the first electrodes 11 of at least two adjacent first light-emitting units 21 are electrically connected, so that the two first light-emitting units 21 can be simultaneously lit or turned off, simplifying the circuit design of the display panel. Exemplarily, the first electrodes 11 of these two first light-emitting units 21 can be connected to the same pixel driving circuit.

[0126] For example, such as Figure 18 As shown, Figure 18 This is an enlarged schematic diagram of another light-emitting element group provided in an embodiment of the present invention. The first light-emitting unit 21 of the first color sub-light-emitting element 201 is located on the side of the second light-emitting unit 22 of the first color sub-light-emitting element 201 that is close to the first light-emitting unit 21 of the second color sub-light-emitting element 202; the first light-emitting unit 21 of the second color sub-light-emitting element 202 is located on the side of the second light-emitting unit 22 of the second color sub-light-emitting element 202 that is close to the first light-emitting unit 21 of the first color sub-light-emitting element 201; based on this arrangement, the first light-emitting unit 21 of the first color sub-light-emitting element 201 and the first light-emitting unit 21 of the second color sub-light-emitting element 202 can both be located between the second light-emitting unit 22 of the first color sub-light-emitting element 201 and the second light-emitting unit 22 of the second color sub-light-emitting element 202. Figure 18 To illustrate the need for privacy protection in the first preset direction X11 and the third preset direction X13, with the first preset direction X11 being parallel to the first direction X21, the above-mentioned first sub-light-blocking part 311 and second sub-light-blocking part 321 are provided to achieve a wide-angle privacy protection in the first preset direction X11, while employing... Figure 18 The arrangement of the light-emitting units shown can reduce the length of the first sub-light-blocking portions 311 and 321 located on both sides of the second light-emitting unit 22 of the first color sub-light-emitting element 201 in the first preset direction X11. This reduces the impact of the first sub-light-blocking portions 311 and 321 on the light emission of the second light-emitting unit 22 of the first color sub-light-emitting element 201, improving the display effect in the shared mode. Furthermore, the length of the first sub-light-blocking portions 311 and 321 located on both sides of the second light-emitting unit 22 of the second color sub-light-emitting element 202 in the first preset direction X11 can be reduced, thereby reducing the impact of the first sub-light-blocking portions 311 and 321 on the light emission of the second light-emitting unit 22 of the second color sub-light-emitting element 202, improving the display effect in the shared mode.

[0127] like Figure 18 As shown, the first light-emitting unit 21 of the first color sub-light-emitting element 201 may not have a first light-blocking layer and a second light-blocking layer on both sides of the first preset direction X11, and the second light-emitting unit 22 of the second color sub-light-emitting element 202 may not have a first light-blocking layer and a second light-blocking layer on both sides of the first preset direction X11.

[0128] like Figure 18As shown, the first light-emitting unit 21 of the third color sub-light-emitting element 203 and the first light-emitting unit 21 of the first color sub-light-emitting element 201 overlap at least partially in the first direction X21. Based on this arrangement, the first light-blocking layer 31 and the second light-blocking layer 32 located between them can simultaneously block the wide-viewing-angle light emitted by them, which is beneficial to simplifying the structure of the display panel.

[0129] like Figure 18 As shown, the second light-emitting unit 22 of the third color sub-light-emitting element 203 and the second light-emitting unit 22 of the second color sub-light-emitting element 202 at least partially overlap in the first direction X21. No first and second light-blocking layers are disposed between them to ensure that their light emission is not affected by the first and second light-blocking layers, thus improving the display effect in the shared mode.

[0130] The first light-emitting unit 21 of the third color sub-light-emitting element 203, except that it at least partially overlaps with the first light-emitting unit 21 of the first color sub-light-emitting element 201 in the first direction X21, exemplarily, as... Figure 19 As shown, Figure 19 This is an enlarged schematic diagram of another light-emitting element group provided by an embodiment of the present invention. In this embodiment, the first light-emitting unit 21 of the third color sub-light-emitting element 203 and the first light-emitting unit 21 of the second color sub-light-emitting element 202 can at least partially overlap in the first direction X21. This allows the first light-blocking layer 31 and the second light-blocking layer 32 located between them to simultaneously block the wide-viewing-angle light emitted by both, which helps to simplify the structure of the display panel.

[0131] Optional, such as Figure 20 and Figure 21 As shown, Figure 20 This is an enlarged schematic diagram of another light-emitting element provided in an embodiment of the present invention. Figure 21 for Figure 20 A cross-sectional view along EE' shows that the display panel further includes a first dimming unit 61, which at least partially overlaps with the first light-emitting unit 21 along a direction perpendicular to the plane of the substrate 1; as shown Figure 21 As shown, the angle between the side surface S611 and the bottom surface S612 of the first dimming unit 61 is an acute angle. The bottom surface of the first dimming unit 61 is the surface of the first dimming unit 61 closest to the substrate 1. The first dimming unit 61 can adjust the large-angle light emitted by the first light-emitting unit 21 into a small-angle light emission, such as... Figure 21 The light beam L7 is shown in the diagram. The first dimming unit 61 reduces the light intensity of the wide-angle light emitted by the first light-emitting unit 21, achieving wide-view privacy protection, while also increasing the brightness of the display panel at a normal viewing angle.

[0132] For example, such as Figure 21 As shown, the display panel also includes a first protective layer 71 that at least partially covers the first dimming unit 61. In this embodiment of the invention, the refractive index of the first protective layer 71 is less than the refractive index of the first dimming unit 61. For the large-angle light L7 emitted by the first light-emitting unit 21, when it strikes the interface between the first dimming unit 61 and the first protective layer 71, according to the law of refraction, the light will be deflected and emitted from the display panel at a small angle, thereby reducing the light intensity of the large-angle light emitted by the first light-emitting unit 21 and improving the brightness of the display panel at a normal viewing angle.

[0133] For example, such as Figure 20 and Figure 21 As shown, in this embodiment of the invention, the orthographic projection of the first dimming unit 61 onto the plane of the substrate 1 can at least partially cover the orthographic projection of the first light-emitting unit 21 onto the plane of the substrate 1. Optionally, in this embodiment of the invention, the shape of the orthographic projection of the first dimming unit 61 onto the plane of the substrate 1 can be the same as the shape of the orthographic projection of the first light-emitting unit 21 onto the plane of the substrate 1.

[0134] When the display panel has a privacy requirement in the first direction X11, the embodiment of the present invention allows the length a2 of the first light-emitting unit 21 in the second direction X22 to be greater than the length a1 in the first direction X21. Based on this arrangement, when setting the first dimming part 61, the length of the first dimming part 61 in the second direction X22 can be greater than the length in the first direction X21. That is, the length of the portion extending along the second direction X22 in the side surface S611 of the first dimming part 61 is made larger, so that the portion extending along the second direction X22 in the side surface S611 can receive more large-angle light and adjust these large-angle light rays into small-angle light rays emitted from the display panel.

[0135] Optional, such as Figure 22 and Figure 23 As shown, Figure 22 This is an enlarged schematic diagram of another light-emitting element provided in an embodiment of the present invention. Figure 23 for Figure 22 A cross-sectional schematic diagram along FF' shows that the display panel further includes a second dimming unit 62, which at least partially overlaps with the second light-emitting unit 22 along a direction perpendicular to the plane of the substrate 1. Figure 23 As shown, the angle between the side surface S621 and the bottom surface S622 of the second dimming unit 62 is an acute angle. The bottom surface of the second dimming unit 62 is the surface of the second dimming unit 62 closest to the substrate 1. The second dimming unit 62 can adjust the large-angle light emitted by the second light-emitting unit 22 into a small-angle light emission, such as... Figure 23 The light ray L8 is shown in the diagram.

[0136] For example, such as Figure 23 As shown, the display panel also includes a second protective layer 72 that at least partially covers the second dimming unit 62. The refractive index of the second protective layer 72 is less than that of the second dimming unit 62. For the large-angle light L8 emitted by the second light-emitting unit 22, when it strikes the interface between the second protective layers 72 of the second dimming unit 62, according to the law of refraction, the light will be deflected and emitted from the display panel at a small angle, thereby reducing the light intensity of the large-angle light emitted by the second light-emitting unit 22 and improving the brightness of the display panel at a normal viewing angle.

[0137] For example, such as Figure 22 and Figure 23 As shown, in this embodiment of the invention, the orthographic projection of the second dimming unit 62 onto the plane of the substrate 1 can at least partially cover the orthographic projection of the second light-emitting unit 22 onto the plane of the substrate 1. Optionally, in this embodiment of the invention, the shape of the orthographic projection of the second dimming unit 62 onto the plane of the substrate 1 can be the same as the shape of the orthographic projection of the second light-emitting unit 22 onto the plane of the substrate 1.

[0138] When the display panel is applied to an in-vehicle display screen, the first direction X21 can be the direction between the driver and passenger seats in the car, and the second direction X22 can be the direction between the in-vehicle display screen and the windshield. In this scenario, the embodiment of the present invention provides a second dimming unit 62 corresponding to the second light-emitting unit 22, and makes the length a3 of the second light-emitting unit 22 in the first direction X21 greater than or equal to the length a4 of the second light-emitting unit 22 in the second direction X22. This allows the length of the second dimming unit 62 in the second direction X22 to be greater than or equal to the length in the first direction X21. That is, the length of the portion extending along the first direction X21 in the side S621 of the second dimming unit 62 is made larger, so that the portion extending along the first direction X21 in the side S621 can receive more large-angle light and adjust these large-angle light rays into small-angle light rays emitted from the display panel. In other words, the second dimming unit 62 can be used to significantly reduce the intensity of large-angle light emitted from the in-vehicle display screen towards the windshield, avoiding the reflected light from the windshield from affecting the driver of the vehicle, which is beneficial to improving driving safety.

[0139] Optional, such as Figure 24 As shown, Figure 24This is a cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention. The display panel further includes a third light-blocking layer 33, which is located on the side of the second light-blocking layer 32 away from the substrate 1. The third light-blocking layer 33 includes a fifth opening 45. Along a direction perpendicular to the plane of the substrate 1, the fifth opening 45 at least partially overlaps with the first light-emitting unit 21. Furthermore, the area of ​​the first opening 41 is larger than the area of ​​the fifth opening 45, and the area of ​​the second opening 42 is larger than the area of ​​the fifth opening 45. The orthographic projection of the third light-blocking layer 33 onto the plane of the substrate 1 at least partially covers the edge of the first opening 41. The orthographic projection of the third light-blocking layer 33 onto the plane of the substrate 1 at least partially covers the edge of the second opening 42.

[0140] In privacy mode, the first light-emitting unit 21 is illuminated. The small-angle light emitted by the first light-emitting unit 21 can pass through the first opening 41, the second opening 42, and the fifth opening 45 in sequence before exiting the display panel, allowing viewers at a relatively small viewing angle, such as those at a normal viewing angle, to see the display image. The large-angle light emitted by the first light-emitting unit 21 can be blocked by the third light-blocking layer 33, the second light-blocking layer 32, or the first light-blocking layer 31 and cannot exit the display panel, thus achieving a large-view privacy effect for the display panel.

[0141] In the sharing mode, the light emitted by the second light-emitting unit 22 can bypass the first light-blocking layer 31, the second light-blocking layer 32 and the third light-blocking layer 33, so that viewers at both the normal viewing angle and the wide viewing angle can see the display screen, thus achieving the screen sharing effect.

[0142] like Figure 25 As shown, Figure 25 This is an enlarged schematic diagram of another light-emitting element provided in an embodiment of the present invention. The display panel further includes a partition 8 located between the first light-emitting unit 21 and the second light-emitting unit 22. The partition 8 can reduce the lateral leakage current between the first light-emitting unit 21 and the second light-emitting unit 22, avoid the situation where the first light-emitting unit 21 or the second light-emitting unit 22 is lit up by others, and improve the display effect in different display modes.

[0143] For example, in an embodiment of the present invention, the partition portion 8 and at least one of the first sub-light blocking portion 311 and the second sub-light blocking portion 321 overlap to make full use of the space between two adjacent light-emitting units, which is beneficial to improving the resolution of the display panel.

[0144] Combination Figure 26 As shown, Figure 26 for Figure 25A schematic cross-sectional view along GG' shows that at least one of the first light-emitting unit 21 and the second light-emitting unit 22 includes a first electrode 11, a light-emitting layer 13, a second electrode 12, and a common layer 14. The partition portion 8 is located on the side of the common layer 14 closest to the substrate 1. Optionally, the common layer 14 includes a first sub-common layer 141 and a second sub-common layer 142, where the first sub-common layer 141 is located between the first electrode 11 and the light-emitting layer 13, and the second sub-common layer 142 is located between the second electrode 12 and the light-emitting layer 13. Optionally, the common layer 14 can be fabricated using a common mask. The light-emitting layer 13 can be fabricated using a fine metal mask (FMM).

[0145] In this embodiment of the invention, the first electrode 11 of the first light-emitting unit 21 and the first electrode 11 of the second light-emitting unit 22 are independent of each other, and the second electrode 12 of the first light-emitting unit 21 and the second electrode 12 of the second light-emitting unit 22 can be electrically connected to each other.

[0146] Optionally, the first electrode 11 includes an anode, and the second electrode 12 includes a cathode. The first sub-common layer 141 includes a hole injection layer and / or a hole transport layer. The second sub-common layer 142 includes an electron injection layer and / or an electron transport layer.

[0147] like Figure 26 As shown, the partition portion 8 includes a protrusion 801 that protrudes toward the side away from the substrate 1. Optionally, the protrusion 801 includes a first side surface S11 and a first bottom surface S12 on the side closer to the substrate 1. In this embodiment of the invention, the included angle between the first side surface S11 and the first bottom surface S12 toward the interior of the protrusion 801 can be an obtuse angle, that is, the area of ​​the side of the protrusion 801 away from the substrate 1 is larger than the area of ​​the side closer to the substrate 1. Based on this arrangement, the common layer 14 formed after the protrusion 801 cannot be formed (or continuously formed) on the first side surface S11, thus breaking at the protrusion 801. This can block the path of lateral leakage current through the common layer 14 between the adjacent first light-emitting unit 21 and the second light-emitting unit 22, thereby suppressing the transmission of lateral leakage current and improving the display effect. For example, in privacy mode, it can prevent lateral leakage current from being transmitted to the second light-emitting unit 22, thus preventing the second light-emitting unit 22 from being lit up.

[0148] In another alternative implementation, such as Figure 27 As shown, Figure 27 for Figure 25In another cross-sectional view along GG', in this embodiment of the invention, the included angle between the first side surface S11 and the first bottom surface S12 toward the interior of the protrusion 801 can be an acute angle, that is, the area of ​​the side of the protrusion 801 away from the substrate 1 is smaller than the area of ​​the side closer to the substrate 1. Based on this arrangement, the common layer 14 formed after the protrusion 801 is formed on the first side surface S11. Based on the morphological characteristics of the protrusion 801, the path of lateral leakage current through the common layer 14 between two adjacent sub-pixels 2 can be extended, thereby suppressing the transmission of lateral leakage current and improving the display effect.

[0149] In yet another alternative implementation, such as Figure 28 As shown, Figure 28 for Figure 25 In another cross-sectional view along GG', the partition portion 8 includes a recessed portion 802 recessed on the side facing the substrate 1. The recessed portion 802 includes a second side surface S21 and a second bottom surface S22 on the side near the substrate 1, as shown below. Figure 28 As shown, the angle between the second side surface S21 and the second bottom surface S22 is an obtuse angle. Based on this arrangement, the common layer 14, which is formed after the recessed portion 802, is formed on the second side surface S21 of the recessed portion 802. Based on the morphological characteristics of the recessed portion 802, the path of lateral leakage current through the common layer 14 between two adjacent sub-pixels 2 can be extended, thereby suppressing the transmission of lateral leakage current and improving the display effect.

[0150] In yet another alternative implementation, such as Figure 29 As shown, Figure 29 for Figure 25 In another cross-sectional view along GG', embodiments of the present invention can also make the angle between the second side surface S21 and the second bottom surface S22 an acute angle. Based on this arrangement, the common layer 14 formed after the recess 802 cannot be formed on the second side surface S21 and thus breaks at the recess 802. This can block the path of lateral leakage current transmission between two adjacent sub-pixels 2 through the common layer 14, thereby suppressing the transmission of lateral leakage current and improving the display effect.

[0151] For example, such as Figure 28 and Figure 29 As shown, in this embodiment of the invention, the recessed portion 802 can be formed in the pixel definition layer 5.

[0152] Based on the same inventive concept, embodiments of the present invention also provide a display device, such as... Figure 30 As shown, Figure 30 This is a schematic diagram of a display device provided in an embodiment of the present invention. The display device includes the display panel 100 described above. The specific structure of the display panel 100 has been described in detail in the above embodiments and will not be repeated here. Of course, Figure 30 The display device shown is merely illustrative. The display device can be any device with a display function, such as a mobile phone, tablet computer, laptop computer, e-reader, television set, or smartwatch. When this display panel is used as a transport display in vehicles such as automobiles, ships, or airplanes, it can be an integral structure independent of the vehicle, or it can be a partial structure integrated with other structural components of the vehicle. For example, the display panel can be integrated with the windshield or with the dashboard. This embodiment of the invention does not limit the scope of the invention.

[0153] 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.

Claims

1. A display panel, characterized in that: include: substrate; A plurality of light-emitting elements located on one side of the substrate, the light-emitting elements comprising a first light-emitting unit and a second light-emitting unit; A first light-blocking layer, located at a side of the first light-emitting unit away from the substrate, the first light-blocking layer comprising a first opening; A second light-blocking layer, located on a side of the first light-blocking layer away from the substrate, the second light-blocking layer comprising a second opening; Along a direction perpendicular to the plane where the substrate is located, the first opening and the second opening at least partially overlap with the first light-emitting unit; and, The area of ​​the first opening is greater than that of the second opening, and the orthographic projection of the second light-blocking layer on the plane where the substrate is located at least partially covers the edge of the first opening.

2. The display panel according to claim 1, characterized in that: The working modes of the display panel include a sharing mode and an anti-peeping mode; In the sharing mode, the second light emitting unit is lit; In the anti-peeping mode, the first light emitting unit is turned on, and the second light emitting unit is turned off.

3. The display panel according to claim 1, characterized in that: The first light-blocking layer includes a first sub-light-blocking portion, and the second light-blocking layer includes a second sub-light-blocking portion; Along a first preset direction parallel to the plane where the substrate is located, The first sub-light-blocking portion includes a first edge close to the first light-emitting unit, and the second sub-light-blocking portion includes a second edge close to the first light-emitting unit; Along the first preset direction, the shortest distance between the second edge and the first light-emitting unit is d3; Along a direction perpendicular to the plane where the substrate is located, the shortest distance between a surface of the second sub-light-blocking portion away from the substrate and a surface of the first light-emitting unit away from the substrate is h1; comprising a pixel definition layer, the pixel definition layer comprising a third opening and a fourth opening, at least a portion of the first light emitting unit is located in the third opening, and at least a portion of the second light emitting unit is located in the fourth opening; Along the first preset direction, the length of the third opening is a1; Wherein, d3+a1≤tan(arcsin(n2×sinθ / n1))×h1; θ is the maximum viewing angle in the anti-peeping mode, n1 is the panel refractive index, and n2 is the air refractive index.

4. The display panel according to claim 3, characterized in that: d3≥0。 5. The display panel according to claim 3, characterized in that: Along the first preset direction, the second sub-light-blocking portion includes a third edge away from the first light-emitting unit, and the shortest distance between the first edge and the third edge is d13. Along the first preset direction, the third opening includes a first opening edge away from the first edge, and a maximum angle between a line between the first opening edge and the third edge and a normal line of the substrate is α1; Along a direction perpendicular to the plane where the substrate is located, the shortest distance between the surface of the first light-blocking sub-portion away from the substrate and the surface of the second light-blocking sub-portion away from the substrate is h12, wherein, d13≥h12×tanα1.

6. The display panel according to claim 1, characterized in that: Also comprising a pixel definition layer, the pixel definition layer comprising a third opening and a fourth opening, at least a portion of the first light emitting unit is located in the third opening, and at least a portion of the second light emitting unit is located in the fourth opening; The first light-blocking layer includes a first sub-light-blocking portion, and the second light-blocking layer includes a second sub-light-blocking portion; The first light-emitting unit and the second light-emitting unit are arranged along the first preset direction; along the first preset direction, the minimum distance between the third edge of the second light-blocking sub-portion and the second light-emitting unit is d2, and the shortest distance between the first light-blocking sub-portion and the fourth opening is d4, Along the direction perpendicular to the plane where the substrate is located, the shortest distance between the surface of the second light-blocking portion away from the substrate and the surface of the first light-emitting unit away from the substrate is h1; the shortest distance between the surface of the second light-emitting unit away from the substrate and the surface of the first light-blocking portion away from the substrate is h2, wherein, d4≥d2×h2 / h1.

7. The display panel according to claim 6, characterized in that: Along the first preset direction, the width of the fourth opening is a2; a2+d2≥tan(arcsin(n2×sinβ / n1))×h1, where β is the maximum viewing angle in sharing mode, n1 is the panel refractive index, and n2 is the air refractive index.

8. The display panel according to claim 1, characterized in that: The first light-blocking layer includes a third sub-light-blocking portion, the second light-blocking layer includes a fourth sub-light-blocking portion, and along a second preset direction parallel to the plane where the substrate is located, the fourth sub-light-blocking portion includes a sixth edge close to the first light-emitting unit; Along the second preset direction, the shortest distance between the sixth edge and the first light-emitting unit is d6; Along a direction perpendicular to the plane where the substrate is located, a distance between a surface of the fourth light-blocking sub-portion away from the substrate and a surface of the first light-emitting unit away from the substrate is h3, The display panel further includes a pixel definition layer, the pixel definition layer includes a third opening and a fourth opening, at least a portion of the first light emitting unit is located in the third opening, and at least a portion of the second light emitting unit is located in the fourth opening; Along the second preset direction, the length of the third opening is a2; wherein, d6+a2≤tan(arcsin(n2×sinθ / n1))×h3; θ is the maximum viewing angle in anti-peeping mode, n1 is the panel refractive index, and n2 is the air refractive index.

9. The display panel according to claim 8, characterized in that: d6≥0。 10. The display panel according to claim 8, characterized in that: Along the second preset direction, the third sub-light-blocking portion includes a fifth edge close to the first light-emitting unit, and the fourth sub-light-blocking portion includes a seventh edge away from the first light-emitting unit; Along the second preset direction, the shortest distance between the seventh edge and the fifth edge is d57; Along the second preset direction, the third opening includes a second opening edge away from the fifth edge, and a maximum angle between a line between the second opening edge and the seventh edge and a normal line of the substrate is α2; Along the direction perpendicular to the plane where the substrate is located, the shortest distance between the surface of the third light-blocking sub-portion away from the substrate and the surface of the fourth light-blocking sub-portion away from the substrate is h34, wherein, d57≥h34×tanα2.

11. The display panel according to claim 1, characterized in that: The display panel includes a plurality of light emitting element groups, each of which includes a first color sub-light emitting element, a second color sub-light emitting element, and a third color sub-light emitting element; In the same light-emitting element group, the third color sub-light-emitting element and the first color sub-light-emitting element are arranged along a first direction, and the third color sub-light-emitting element and the second color sub-light-emitting element are arranged along the first direction; the first color sub-light-emitting element and the second color sub-light-emitting element are arranged along a second direction, and the first direction and the second direction intersect; At least one of the first color sub-light emitting element, the second color sub-light emitting element, and the third color sub-light emitting element includes the first light emitting unit and the second light emitting unit.

12. The display panel according to claim 11, characterized in that: In the same light emitting element, the first light emitting unit and the second light emitting unit are arranged along the first direction.

13. The display panel according to claim 11, characterized in that: In the same light emitting element, the first light emitting unit and the second light emitting unit are arranged along the second direction.

14. The display panel according to claim 13, characterized in that: The same light-emitting element includes at least two of the first light-emitting units, and, Along the second direction, the second light emitting unit at least partially overlaps with at least two of the first light emitting units that belong to the same light emitting element.

15. The display panel according to claim 14, characterized in that: The first light-emitting unit includes a first electrode, and the first electrodes of at least two adjacent first light-emitting units are electrically connected.

16. The display panel according to claim 11, characterized in that: The first light-emitting unit of the first-color sub-light-emitting element is located on a side of the second light-emitting unit of the first-color sub-light-emitting element close to the first light-emitting unit of the second-color sub-light-emitting element; The first light-emitting unit of the second color sub-light-emitting element is located on a side of the second light-emitting unit of the second color sub-light-emitting element close to the first light-emitting unit of the first color sub-light-emitting element; The first light-emitting unit of the third-color sub-light-emitting element and the first light-emitting unit of the first-color sub-light-emitting element at least partially overlap in the first direction; The second light emitting unit of the third color sub-light emitting element and the second light emitting unit of the second color sub-light emitting element at least partially overlap in the first direction.

17. The display panel according to claim 16, characterized in that: The first light emitting unit of the third color sub-light emitting element and the first light emitting unit of the second color sub-light emitting element at least partially overlap in the first direction.

18. The display panel according to claim 1, characterized in that: Also comprising a pixel definition layer, the pixel definition layer comprising a third opening and a fourth opening, at least a portion of the first light emitting unit is located in the third opening, and at least a portion of the second light emitting unit is located in the fourth opening; The area of ​​the third opening is smaller than or equal to the area of ​​the fourth opening.

19. The display panel according to claim 1, characterized in that: It also includes a first dimming unit, wherein the first dimming unit at least partially overlaps with the first light-emitting unit along a direction perpendicular to the plane where the substrate is located; The included angle between the side surface and the bottom surface of the first dimming unit is an acute angle.

20. The display panel according to claim 19, characterized in that: The first protective layer at least partially covers the first dimming unit, and the refractive index of the first protective layer is smaller than the refractive index of the first dimming unit.

21. The display panel according to claim 1, characterized in that: It also includes a second dimming unit, and along a direction perpendicular to the plane where the substrate is located, the second dimming unit at least partially overlaps with the second light-emitting unit.

22. The display panel according to claim 21, characterized in that: The invention also includes a second protection layer at least partially covering the second light modulating part, wherein the refractive index of the second protection layer is smaller than the refractive index of the second light modulating part.

23. The display panel according to claim 22, characterized in that: A length of the second light emitting unit in the first direction is greater than or equal to a length of the second light emitting unit in the second direction.

24. The display panel according to claim 1, characterized in that: Also comprising a third light-blocking layer, located on a side of the second light-blocking layer away from the substrate, the third light-blocking layer comprising a fifth opening; Along a direction perpendicular to the plane where the substrate is located, the fifth opening at least partially overlaps with the first light-emitting unit; and, The area of ​​the first opening is greater than that of the fifth opening, and the orthographic projection of the third light-blocking layer on the plane where the substrate is located at least partially covers the edge of the first opening.

25. The display panel according to claim 1, characterized in that: It also includes a partition portion located between the first light emitting unit and the second light emitting unit.

26. The display panel according to claim 25, characterized in that: The partition portion includes a recessed portion or a raised portion.

27. A display device, characterized in that: A display panel comprising any one of claims 1-26.

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