A display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel comprises a substrate, a light-emitting element and an optical modulation structure arranged in a stack. The optical modulation structure comprises a first modulation structure and a second modulation structure. The refractive index of the first modulation structure is less than that of the second modulation structure. The second modulation structure comprises a first modulation part and a second modulation part arranged in a stack in a first direction. Along the first direction, the first modulation part and the second modulation part both at least partially overlap with the light-emitting element. The first modulation part and the first modulation structure have a first interface, and the second modulation part and the first modulation structure have a second interface. The normal projection of the second interface on the plane of the substrate at least partially surrounds the normal projection of the first interface on the plane of the substrate. The small-view-angle light is modulated by the first modulation part, and the large-view-angle light is adjusted by the second modulation part, so that the light-emitting efficiency of the display panel and the normal-view-angle light-emitting brightness are effectively improved.

Description

Technical Field

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

[0002] With the continuous development of display technology, Organic Light-Emitting Diode (OLED) display panels have become the main development trend. However, currently, some of the non-normal viewing angle light emitted by the light-emitting devices in OLED display panels is confined within the display panel, affecting the display quality. Summary of the Invention

[0003] This application provides a display panel and a display device. The second modulation structure includes a first modulation portion and a second modulation portion stacked in a first direction. The first modulation portion and the second modulation portion adjust the light at different viewing angles to effectively improve the light emission efficiency of the display panel and the light emission brightness at a normal viewing angle, thereby reducing power consumption.

[0004] In a first aspect, this application provides a display panel including a substrate, a light-emitting element, and an optical modulation structure stacked in a first direction, wherein the light-emitting element is located on one side of the substrate along the first direction, and the optical modulation structure is located on the side of the light-emitting element away from the substrate; the first direction intersects with the plane of the substrate.

[0005] The optical modulation structure includes a first modulation structure and a plurality of second modulation structures, wherein the refractive index of the first modulation structure is less than the refractive index of the second modulation structure.

[0006] The second modulation structure includes a first modulation portion and a second modulation portion stacked in the first direction. Along the first direction, both the first modulation portion and the second modulation portion overlap at least partially with the light-emitting element. The first modulation portion and the first modulation structure have a first interface, and the second modulation portion and the first modulation structure have a second interface.

[0007] The orthographic projection of the second interface onto the plane where the substrate is located at least partially surrounds the orthographic projection of the first interface onto the plane where the substrate is located.

[0008] Secondly, this application provides a display device including the display panel described in any one of the first aspects.

[0009] The display panel of this application embodiment includes a substrate, a light-emitting element, and an optical modulation structure stacked in a first direction. The optical modulation structure includes a first modulation structure and a plurality of second modulation structures, with the first modulation structure having a lower refractive index covering the second modulation structures having a higher refractive index. The second modulation structure includes a first modulation portion and a second modulation portion stacked in the first direction. A first interface is provided between the first modulation portion and the first modulation structure, and a second interface is provided between the second modulation portion and the first modulation structure. The orthographic projection of the second interface onto the plane of the substrate at least partially surrounds the orthographic projection of the first interface onto the plane of the substrate. Non-orthographic viewing angle light emitted from the light-emitting element can be angled through the first interface or the second interface, thereby improving the light emission efficiency and brightness of the display panel at the orthographic viewing angle, and thus reducing the power consumption of the display panel.

[0010] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0012] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application;

[0013] Figure 2 for Figure 1 A schematic diagram of a cross-sectional structure along the central section line AA';

[0014] Figure 3 for Figure 1 Another cross-sectional structure diagram along the central section line AA';

[0015] Figure 4 for Figure 1 A schematic diagram of another cross-sectional structure along the central section line AA';

[0016] Figure 5 This is a top view schematic diagram of a second modulation structure provided in an embodiment of this application;

[0017] Figure 6 for Figure 1 A schematic diagram of a cross-sectional structure along the central section line BB';

[0018] Figure 7 for Figure 1 Another cross-sectional structure diagram along the central section line BB';

[0019] Figure 8 for Figure 1 A schematic diagram of another cross-sectional structure along the central section line BB';

[0020] Figure 9 for Figure 1 A schematic diagram of another cross-sectional structure along the central section line BB';

[0021] Figure 10 for Figure 1 Another cross-sectional structure diagram along the central section line BB';

[0022] Figure 11 for Figure 1 A schematic diagram of another cross-sectional structure along the section line BB';

[0023] Figure 12 for Figure 1 Another cross-sectional structure diagram along the central section line BB';

[0024] Figure 13 Figure 1 A schematic diagram of another cross-sectional structure along the central section line BB';

[0025] Figure 14 Figure 1 A schematic diagram of another cross-sectional structure along the central section line BB';

[0026] Figure 15 A top view schematic diagram of another second modulation structure provided in the embodiments of this application;

[0027] Figure 16 for Figure 15 A schematic diagram of a cross-sectional structure along the central section line CC';

[0028] Figure 17 A top view schematic diagram of yet another second modulation structure provided in the embodiments of this application;

[0029] Figure 18 for Figure 17 A schematic diagram of a cross-sectional structure along the central section line DD';

[0030] Figure 19 A top view schematic diagram of another second modulation structure provided in the embodiments of this application;

[0031] Figure 20 for Figure 19 A schematic diagram of a cross-sectional structure along the central section line EE';

[0032] Figure 21This is a partial structural diagram of a display panel provided in an embodiment of this application;

[0033] Figure 22 for Figure 21 A schematic diagram of a cross-sectional structure along section line FF';

[0034] Figure 23 for Figure 21 A schematic diagram of a cross-sectional structure along section line GG';

[0035] Figure 24 A partial structural schematic diagram of another display panel provided in an embodiment of this application;

[0036] Figure 25 for Figure 24 A schematic diagram of a cross-sectional structure along section line HH';

[0037] Figure 26 for Figure 24 A schematic diagram of a cross-sectional structure along section line II';

[0038] Figure 27 A partial structural schematic diagram of another display panel provided in an embodiment of this application;

[0039] Figure 28 for Figure 27 A schematic diagram of a cross-sectional structure along section line JJ';

[0040] Figure 29 A partial structural schematic diagram of another display panel provided in an embodiment of this application;

[0041] Figure 30 for Figure 29 A schematic diagram of a cross-sectional structure along section line KK';

[0042] Figure 31 This is a schematic diagram of the structure of a display device provided in an embodiment of this application. Detailed Implementation

[0043] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0044] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0045] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application. Figure 2 for Figure 1 A schematic diagram of a cross-sectional structure along section line AA'. Figure 3 for Figure 1 Another cross-sectional structure diagram along section line AA', as shown below. Figure 1 , Figure 2 and Figure 3 As shown, the display panel includes a substrate 10, a light-emitting element 11, and an optical modulation structure 13 stacked on a first direction (Y direction as shown in the figure, which will be used as an example in the following description). Along the first direction Y, the light-emitting element 11 is located on one side of the substrate 10, and the optical modulation structure 13 is located on the side of the light-emitting element 11 away from the substrate 10. The first direction Y intersects the plane where the substrate 10 is located. The optical modulation structure 13 includes a first modulation structure 131 and a plurality of second modulation structures 132. The refractive index of the first modulation structure 131 is less than the refractive index of the second modulation structures 132. The modulation structure 132 includes a first modulation portion 1321 and a second modulation portion 1322 stacked in the first direction Y. Along the first direction Y, the first modulation portion 1321 and the second modulation portion 1322 both overlap with the light-emitting element 11 at least partially. The first modulation portion 1321 and the first modulation structure 131 have a first interface 14, and the second modulation portion 1322 and the first modulation structure 131 have a second interface 15. The orthographic projection of the second interface 15 onto the plane of the substrate 10 at least partially surrounds the orthographic projection of the first interface 14 onto the plane of the substrate 10.

[0046] The substrate 10 can be a flexible or rigid substrate, and the specific material of the substrate 10 can be set according to actual design requirements. This application embodiment does not impose specific limitations. The light-emitting element 11 is used to emit light, and the light-emitting element 11 may include a red light-emitting element 11, a green light-emitting element 11, and a blue light-emitting element 11 to achieve color display of the display panel. The optical modulation structure 13 is disposed on the side of the light-emitting element 11 away from the substrate 10. The optical modulation structure 13 is used to adjust the light emission angle of the light emitted from the light-emitting element 11 at different viewing angles, so as to improve the light emission efficiency of the display panel and the light emission brightness at a normal viewing angle, and ensure the display effect of the display panel.

[0047] Specifically, the optical modulation structure 13 includes a first modulation structure 131 and a plurality of second modulation structures 132. The refractive index of the first modulation structure 131 is lower than that of the second modulation structures 132. The first modulation structure 131 is made of a low-refractive-index material, and the second modulation structures 132 are made of a high-refractive-index material. The first modulation structure 131 covers the plurality of second modulation structures 132, and the first modulation structure 131 and the second modulation structures 132 are in contact and form an interface. Furthermore, the second modulation structure 132 includes a first modulation portion 1321 and a second modulation portion 1322 stacked in the first direction Y. The first modulation portion 1321 contacts the first modulation structure 131 to form a first interface 14, and the second modulation portion 1322 contacts the first modulation structure 131 to form a second interface 15. Along the first direction Y, both the first modulation portion 1321 and the second modulation portion 1322 overlap with the light-emitting element 11, so that the light emitted from the light-emitting element 11 can be incident on the first interface 14 and the second interface 15, so that the first interface 14 and the second interface 15 can modulate the light emitted from the light-emitting element. Specifically, since the refractive indices of the first modulation portion 1321 and the second modulation portion 1322 are both greater than the refractive index of the first modulation structure 131, when the light emitted from the light-emitting element 11 is incident on the first interface 14 or the second interface 15, the light enters the less dense medium from the denser medium, and the exit angle is greater than the incident angle. That is, the light modulated by the first interface 14 or the second interface 15 is deflected towards the positive light emission angle of the display panel. In this way, the light that originally could not be emitted from the light-emitting surface of the display panel can be emitted from the light-emitting surface of the display panel after being modulated by the first interface 14 or the second interface 15, thus improving the light emission efficiency of the display panel. Meanwhile, the light rays that originally had a larger viewing angle can be emitted from the light-emitting surface of the display panel at a smaller viewing angle after being modulated by the first interface 14 or the second interface 15. This means that the amount of light emitted from the display panel at the forward viewing angle can be increased, thereby improving the display brightness of the display panel at the forward viewing angle.

[0048] Furthermore, the orthographic projection of the second interface 15 onto the plane of the substrate 10 at least partially surrounds the orthographic projection of the first interface 14 onto the plane of the substrate 10, that is, along a direction parallel to the plane of the substrate 10 (as shown in the figure, the X direction is used as an example for the following explanation). The first interface 14 and the second interface 15 have different dimensions, thus the first interface 14 and the second interface 15 can respectively receive light emitted from the light-emitting element 11 at different angles. Specifically, the first interface 14 can modulate the light emitted from the display panel at a smaller viewing angle to convert the small viewing angle light into a positive viewing angle light or near-positive viewing angle light, thereby increasing the light output of the display panel at the positive viewing angle and improving the display brightness of the display panel at the positive viewing angle. The second interface 15 can modulate the light emitted from the display panel at a larger viewing angle to convert light that originally could not be emitted from the light-emitting surface of the display panel into light that can be emitted from the light-emitting surface of the display panel, thereby improving the light output efficiency of the display panel.

[0049] It should be noted that, in the embodiments of this application, the light emission angle can be understood as the acute angle between the emitted light ray and the first direction Y. A small-angle light ray can be understood as a light ray with a small acute angle between it and the first direction Y, for example, less than 30°; a large-angle light ray can be understood as a light ray with a large acute angle between it and the first direction Y, for example, greater than 30°; a positive-angle light ray can be immediately defined as a light ray with an acute angle of 0° between it and the first direction Y, that is, the light emission direction of the emitted light ray is the first direction Y. Furthermore, both large-angle and small-angle light rays are relative probabilities, that is, the acute angle between the large-angle light emission and the first direction Y is greater than the acute angle between the small-angle light emission and the first direction Y. The embodiments of this application do not limit the specific light emission angle of the large-angle light ray or the specific light emission angle of the small-angle light ray.

[0050] In summary, the embodiments of this application, by setting the second modulation structure to include a first modulation portion and a second modulation portion stacked together, such that the first modulation portion and the first modulation structure have a first interface, and the second modulation portion and the first modulation structure have a second interface, and further setting the first interface and the second interface to have different sizes, in this way, light rays with a smaller viewing angle can be modulated by the first interface and emitted at a smaller viewing angle, or an angle close to the orthogonal viewing angle, thus increasing the amount of light emitted by the display panel at the orthogonal viewing angle and improving the display brightness of the display panel at the orthogonal viewing angle. Light rays with a larger viewing angle can be modulated by the second interface and emitted at a smaller viewing angle. The second interface can modulate light rays that originally could not be emitted from the light-emitting surface of the display panel to be emitted from the light-emitting surface of the display panel, thus improving the light emission efficiency of the display panel.

[0051] Optional, continue to refer to Figure 2Along the direction X of the plane parallel to the substrate 10, the first interface 14 is located on at least one side of the first modulation section 1321, and the second interface 15 is located on at least one side of the second modulation section 1322.

[0052] The first modulation section 1321 can be in the shape of a frustum or a pyramid. Along the direction X parallel to the plane of the substrate 10, the first interface 14 can be located on both sides of the first modulation section 1321, so that the light emitted by the light-emitting element 11 at a smaller angle in different directions can be adjusted by passing through the corresponding first interface 14, thereby improving the light emission efficiency at the positive angle.

[0053] Furthermore, the second modulation section 1322 can also be in the shape of a frustum or a pyramid. Along the direction X parallel to the plane where the substrate 10 is located, the second interface 15 is located on both sides of the second modulation section 1322, so that the lines of large-view light emitted by the light-emitting element 11 in different directions can all pass through the corresponding second interface 15 for angle adjustment, thereby modulating the light that originally could not be emitted from the light-emitting surface of the display panel into light that can be emitted from the light-emitting surface of the display panel, thus improving the light emission efficiency of the display panel.

[0054] Optional, continue to refer to Figure 2 Along the first direction Y, the orthographic projection of the second modulation portion 1322 onto the plane where the substrate 10 is located covers the orthographic projection of the first modulation portion 1321 onto the plane where the substrate 10 is located; along the first direction Y, the first modulation portion 1321 is located on the side of the second modulation portion 1322 away from the substrate 10.

[0055] In this configuration, along the first direction Y, the first modulation portion 1321 is located on the side of the second modulation portion 1322 away from the substrate 10, and the second modulation portion 1322 is located between the first modulation portion 1321 and the substrate 10. That is, the smaller first modulation portion 1321 is located at the upper position, and the larger second modulation portion 1322 is located at the lower position. Thus, the first modulation portion 1321 and the second modulation portion 1322 can be fabricated in the same mask process using a grayscale mask process, ensuring a simple fabrication process for both.

[0056] Optional, Figure 4 for Figure 1 Another schematic diagram of a cross-sectional structure along section line AA', as shown below. Figure 4 As shown, along the first direction Y, the orthographic projection of the second modulation portion 1322 onto the plane where the substrate 10 is located covers the orthographic projection of the first modulation portion 1321 onto the plane where the substrate 10 is located; along the first direction Y, the first modulation portion 1321 is located on the side of the second modulation portion 1322 closer to the substrate 10.

[0057] In this configuration, along the first direction Y, the first modulation portion 1321 is located on the side of the second modulation portion 1322 closer to the substrate 10, and the first modulation portion 1321 is located between the second modulation portion 1322 and the substrate 10. That is, the smaller first modulation portion 1321 is located at a lower position, and the larger second modulation portion 1322 is located at a higher position. Figure 2 The structure shown indicates that the positions of the first modulation section 1321 and the second modulation section 1322 are flexible and can be adjusted according to requirements to meet different application scenarios.

[0058] Optional, continue to refer to Figure 2 and Figure 4 As shown, the first modulation section 1321 and the second modulation section 1322 are in contact.

[0059] The first modulation section 1321 and the second modulation section 1322 are integrated into a single structure, allowing light modulated by the first modulation section 1321 and light modulated by the second modulation section 1322 to be emitted directly. Both sections modulate the light only once, reducing modulation complexity. Furthermore, regardless of the modulation method used… Figure 2 still Figure 4 The second modulation structure 132 shown can ensure the adjustment effect of light from both wide and narrow viewing angles, and improve the light emission efficiency from the positive viewing angle and the light emission efficiency of the display panel.

[0060] It should be noted that in the following embodiments, the second modulation structure 132 is used as... Figure 2 The structure shown in the figure will be explained.

[0061] Optional, continue to refer to Figure 2 The first modulation section 1321 includes a first bottom surface 21 and a first top surface 31, and a first interface 14 connects the first bottom surface 21 and the first top surface 31; the second modulation section 1322 includes a second bottom surface 22 and a second top surface 32, and a second interface 15 connects the second bottom surface 22 and the second top surface 32; the angle between the first interface 14 and the first bottom surface 21 is an acute angle, and the angle between the first interface 14 and the first top surface 31 is an obtuse angle; the angle between the second interface 15 and the second bottom surface 22 is an acute angle, and the angle between the second interface 15 and the second top surface 32 is an obtuse angle.

[0062] Specifically, the angle between the first bottom surface 21 and the first interface 14 in the first modulation section 1321 is an acute angle, and the angle between the first top surface 31 and the first interface 14 in the first modulation section 1321 is an obtuse angle, making the cross-sectional shape of the first modulation section 1321 trapezoidal, narrower at the top and wider at the bottom. Along the direction from the first bottom surface 21 to the first top surface 31, the first interface 14 is inclined towards the center of the first modulation section 1321, thereby allowing the small-angle light emitted from the light-emitting element 11 to enter the first interface 14 and be adjusted. The small-angle light is modulated into a positive-angle light or approximately positive-angle light for emission, improving the positive-angle light emission efficiency.

[0063] Furthermore, the angle between the second bottom surface 22 and the second interface 15 in the second modulation section 1322 is set to an acute angle, and the angle between the second top surface 32 and the second interface 15 in the second modulation section 1322 is set to an obtuse angle, so that the cross-sectional shape of the second modulation section 1322 is a trapezoid with a narrow top and a wide bottom. Along the direction from the second bottom surface 22 to the second top surface 32, the second interface 15 is inclined toward the center of the second modulation section 1322, so that the wide-angle light emitted from the light-emitting element 11 can be incident on the second interface 15 and adjusted. The wide-angle light is modulated into a narrow-angle light and emitted. Light that would not normally be emitted from the light-emitting surface of the display panel can be emitted from the light-emitting surface of the display panel, thereby improving the light emission efficiency of the display panel.

[0064] Optional, Figure 5 This is a top view schematic diagram of a second modulation structure provided in an embodiment of this application. Figure 6 for Figure 1 A schematic diagram of a cross-sectional structure along the central section line BB'. Figure 7 for Figure 1 Another cross-sectional structure diagram along section line BB'. Figure 8 for Figure 1 A schematic diagram of another cross-sectional structure along section line BB'. Figure 9 for Figure 1 A schematic diagram of another cross-sectional structure along section line BB'. Figure 10 for Figure 1 Another cross-sectional structure diagram along section line BB'. Figure 11 for Figure 1 Another schematic diagram of a cross-sectional structure along section line BB', as shown below. Figures 5-11As shown, the first modulation section 1321 includes a first central section 41 and a first functional section 51, the first functional section 51 surrounding the first central section 41, and the first interface 14 is the interface between the first functional section 51 and the first modulation structure 131; the second modulation section 1322 includes a second central section 42 and a second functional section 52, the second functional section 52 surrounding the second central section 42, and the second interface 15 is the interface between the second functional section 52 and the first modulation structure 131; the light-emitting element 11 includes a first light-emitting element 111 and a second light-emitting element 112; the plurality of second modulation structures 132 include a first sub-modulation structure 101 and a second sub-modulation structure 102, along the first direction Y, the first sub-modulation structure 101 at least partially overlaps with the first light-emitting element 111, and the second sub-modulation structure 102 at least partially overlaps with the second light-emitting element 112. In the first sub-modulation structure 101, along the direction from the first functional part 51 to the first central part 41, the projection length of the first interface 14 on the plane where the substrate 10 is located is L11; along the direction from the second functional part 52 to the second central part 42, the projection length of the second interface 15 on the plane where the substrate 10 is located is L12; in the second sub-modulation structure 102, along the direction from the first functional part 51 to the first central part 41, the projection length of the first interface 14 on the plane where the substrate 10 is located is L21; along the direction from the second functional part 52 to the second central part 42, the projection length of the second interface 15 on the plane where the substrate 10 is located is L22; the pixel opening area of ​​the first light-emitting element 111 is different from the pixel opening area of ​​the second light-emitting element 112, and L11≠L21, and / or, L12≠L22.

[0065] The first light-emitting element 111 emits light of a first color, and the second light-emitting element 112 emits light of a second color. The first and second color lights have different wavelengths, meaning they are different colors. The pixel aperture area of ​​the first light-emitting element 111 is different from that of the second light-emitting element 112. For example, the first light-emitting element 111 may include a blue light-emitting element, and the second light-emitting element 112 may include a red light-emitting element and / or a green light-emitting element; or, the first light-emitting element 111 may include a blue light-emitting element and / or a red light-emitting element, and the second light-emitting element 112 may include a green light-emitting element.

[0066] Because the pixel aperture areas of different colored light-emitting elements 11 differ, the amount of light emitted by these elements also differs. Furthermore, due to these differences in pixel aperture areas, the varying degrees of modulation applied to different colors by the optical modulation structure 13 after its implementation can lead to a decrease in the white balance display effect of the display panel. Therefore, a second modulation structure 132 can be configured according to the pixel aperture areas of the light-emitting elements 11 to balance the differences in light emission between the different colored light-emitting elements 11, ensuring the color mixing effect of different colors and preventing color shift issues in the display panel. Simultaneously, it can also improve the white balance effect, ensuring the overall display effect of the display panel.

[0067] Specifically, considering that the different pixel aperture areas will cause differences in the light output and total light output of the first light-emitting element 111 and the second light-emitting element 112 at small viewing angles, therefore, as Figures 6-11 As shown, the first sub-modulation structure 101 corresponding to the first light-emitting element 111 and the second sub-modulation structure 102 corresponding to the second light-emitting element 112 can be differentiated to match the light output of the first light-emitting element 111 at a small viewing angle with the pixel aperture area of ​​the first light-emitting element 111, and the light output of the second light-emitting element 112 at a small viewing angle with the pixel aperture area of ​​the second light-emitting element 112, thereby ensuring the white balance effect of the display panel. Furthermore, the differentiated design of the first sub-modulation structure 101 and the second sub-modulation structure 102 can also adjust the total light output of the first light-emitting element 111 to be the same as or similar to the total light output of the second light-emitting element 112, ensuring the color mixing effect of the first color light and the second color light, preventing color shift in the display panel, and ensuring the overall display effect of the display panel.

[0068] Specifically, the projection length L11 of the first interface 14 in the first sub-modulation structure 101 onto the plane of the substrate 10 can be set to be different from the projection length L21 of the first interface 14 in the second sub-modulation structure 102 onto the plane of the substrate 10. That is, the modulation amount of the first interface 14 of the first sub-modulation structure 101 and the first interface 14 of the second sub-modulation structure 102 on the light at a smaller viewing angle is different, so that the amount of light emitted by the light-emitting elements of different colors at a small viewing angle is positively correlated with the pixel opening area of ​​the light-emitting elements. This can reduce the white balance color shift at a normal or near-normal viewing angle, thereby ensuring the display effect of the display panel. Furthermore, the projection length L12 of the second interface 15 in the first sub-modulation structure 101 onto the plane of the substrate 10 can be set to be different from the projection length L22 of the second interface 15 in the second sub-modulation structure 102 onto the plane of the substrate 10. That is, the modulation amount of the second interface 15 of the first sub-modulation structure 101 and the second interface 15 of the second sub-modulation structure 102 on light with a larger viewing angle is adjusted to be different, thereby reducing the difference in the amount of light emitted between the first light-emitting element 111 and the second light-emitting element 112.

[0069] Optional, such as Figures 6-8 As shown, the thickness a1 of the first modulation portion 1321 in the first sub-modulation structure 101 in the first direction Y is different from the thickness a2 of the first modulation portion 1321 in the second sub-modulation structure 102 in the first direction Y; and / or, the thickness b1 of the second modulation portion 1322 in the first sub-modulation structure 101 in the first direction Y is different from the thickness b2 of the second modulation portion 1322 in the second sub-modulation structure 102 in the first direction Y.

[0070] Among them, such as Figure 6As shown, the thickness a1 of the first modulation portion 1321 in the first sub-modulation structure 101 in the first direction Y is different from the thickness a2 of the first modulation portion 1321 in the second sub-modulation structure 102 in the first direction Y. This ensures that the heights of the first interface 14 of the first modulation portion 1321 in the first sub-modulation structure 101 and the first interface 14 of the first modulation portion 1321 in the second sub-modulation structure 102 are different. By setting the heights of the first interface 14 of the first modulation portion 1321 in the first sub-modulation structure 101 and the first interface 14 of the first modulation portion 1321 in the second sub-modulation structure 102 to be different, it can be ensured that the areas of the first interface 14 of the first sub-modulation structure 101 and the first interface 14 of the second sub-modulation structure 102 are different. This ensures that the modulation amounts of the first modulation portion 1321 in the first sub-modulation structure 101 and the first modulation portion 1321 in the second sub-modulation structure 102 differ for light rays with smaller viewing angles. This allows the light output of the first light-emitting element 111 at a normal or near-normal viewing angle to match the pixel aperture area of ​​the first light-emitting element 111, and the light output of the second light-emitting element 112 at a normal or near-normal viewing angle to match the pixel aperture area of ​​the second light-emitting element 112. This balances the light attenuation of different colors, preventing the problem of color coordinate center shift caused by an imbalance in the red, green, and blue color ratio due to an excessively large proportion of light attenuation in the light-emitting element with a smaller aperture area. By setting the areas of the first interface 14 in the first sub-modulation structure 101 and the first interface 14 in the second sub-modulation structure 102 to be different, the view character coordinate offset trajectory is narrowed, color transition defects are improved, and the purpose of display white balance is achieved.

[0071] like Figure 7As shown, the thickness a1 of the second modulation portion 1322 in the first sub-modulation structure 101 in the first direction Y is different from the thickness a2 of the second modulation portion 1322 in the second sub-modulation structure 102 in the first direction Y. This ensures that the heights of the second interface 15 of the second modulation portion 1322 in the first sub-modulation structure 101 and the second interface 15 of the second modulation portion 1322 in the second sub-modulation structure 102 are different. By setting the heights of the second interface 15 of the second modulation portion 1322 in the first sub-modulation structure 101 and the second interface 15 of the second modulation portion 1322 in the second sub-modulation structure 102 to be different, it can be ensured that the areas of the second interface 15 in the first sub-modulation structure 101 and the second interface 15 in the second sub-modulation structure 102 are different. This ensures that the second modulation portion 1322 in the first sub-modulation structure 101 and the second modulation portion 1322 in the second sub-modulation structure 102 modulate the light at a larger viewing angle differently. The light at a larger viewing angle is modulated into light at a smaller viewing angle for emission, so that the light output of the first light-emitting element 111 and the light output of the second light-emitting element 112 are the same or similar, ensuring the color mixing effect of the first color light and the second color light, ensuring that the display panel will not have a color shift problem, and ensuring the overall display effect of the display panel.

[0072] In addition, such as Figure 8As shown, the thickness a1 of the first modulation portion 1321 in the first sub-modulation structure 101 in the first direction Y and the thickness a2 of the first adjustment portion 1321 in the second sub-modulation structure 102 in the first direction Y can also be adjusted simultaneously, as can the thickness b1 of the second modulation portion 1322 in the first sub-modulation structure 101 in the first direction Y and the thickness b2 of the second adjustment portion 1322 in the second sub-modulation structure 102 in the first direction Y. Even if the areas of the first interface 14 of the first modulation portion 1321 in the first sub-modulation structure 101 and the first interface 14 of the first modulation portion 1321 in the second sub-modulation structure 102 are different, and the areas of the second interface 15 of the second modulation portion 1322 in the first sub-modulation structure 101 and the second interface 15 of the second modulation portion 1322 in the second sub-modulation structure 102 are different, by setting the areas of the first interface 14 in the first sub-modulation structure 101 and the first interface 14 of the second sub-modulation structure 102 to be different, it can be ensured that the areas of the first modulation portion 1321 in the first sub-modulation structure 101 and the first modulation portion 14 of the second sub-modulation structure 102 are different. 321 modulates the light at smaller viewing angles differently so that the light output of the first light-emitting element 111 at a normal or near-normal viewing angle matches the pixel aperture area of ​​the first light-emitting element 111, and the light output of the second light-emitting element 112 at a normal or near-normal viewing angle matches the pixel aperture area of ​​the second light-emitting element 112. This can balance the light output attenuation of different colors of light and avoid the problem of color coordinate center shift caused by the excessive proportion of light output attenuation of the light-emitting element with a smaller aperture at a normal or near-normal viewing angle to the overall light output, which leads to an imbalance in the red, green and blue color ratio. This achieves the purpose of narrowing the viewing character coordinate shift trajectory, improving color conversion defects, and achieving display white balance. By setting the areas of the second interface 15 in the first sub-modulation structure 101 and the second interface 15 in the second sub-modulation structure 102 to be different, it can be ensured that the modulation amount of the second modulation portion 1322 in the first sub-modulation structure 101 and the second modulation portion 1322 in the second sub-modulation structure 102 is different for the light with a larger viewing angle. The light with a larger viewing angle is modulated into light with a smaller viewing angle for emission, so that the light emission amount of the first light-emitting element 111 and the light emission amount of the second light-emitting element 112 are the same or similar, ensuring the color mixing effect of the first color light and the second color light, ensuring that the display panel will not have the problem of color deviation, and ensuring the overall display effect of the display panel.

[0073] Optional, such as Figures 6-8As shown, the pixel aperture area of ​​the first light-emitting element 111 is larger than the pixel aperture area of ​​the second light-emitting element 112; the thickness a1 of the first modulation portion 1321 in the first sub-modulation structure 101 is larger than the thickness a2 of the first modulation portion 1321 in the second sub-modulation structure 102; and / or, the thickness b1 of the second modulation portion 1322 in the first sub-modulation structure 101 is smaller than the thickness b2 of the second modulation portion 1322 in the second sub-modulation structure 102.

[0074] Among them, such as Figure 6 and Figure 8 As shown, when the pixel aperture area of ​​the first light-emitting element 111 is larger than that of the second light-emitting element 112, the light emission of the first light-emitting element 111 is greater than that of the second light-emitting element 112. Since the first modulation section 1321 mainly adjusts the smaller angle light to the positive angle light or approximately positive angle light, in order to ensure that the positive angle light or approximately positive angle light in the first light-emitting element 111 matches the overall light emission of the first light-emitting element 111, and the positive angle light or approximately positive angle light in the second light-emitting element 112 matches the overall light emission of the second light-emitting element 112, the thickness a1 of the first modulation section 1321 in the first sub-modulation structure 101 in the first direction Y can be adjusted to be greater than the thickness a2 of the first modulation section 1321 in the first direction Y in the second sub-modulation structure 102, so that the height of the first interface 14 of the first modulation section 1321 in the first sub-modulation structure 101 is greater than the height of the first interface 14 of the first modulation section 1321 in the second sub-modulation structure 102, and the height of the first interface 14 of the first modulation section 1321 in the first sub-modulation structure 101 is greater than the height of the first interface 14 of the first modulation section 1321 in the second sub-modulation structure 102. The area of ​​the interface 14 is larger than the area of ​​the first interface 14 of the first modulation portion 1321 in the second sub-modulation structure 102. This ensures that the modulation amount of the first interface 14 of the first modulation portion 1321 in the first sub-modulation structure 101 for the smaller viewing angle light is greater than that of the first interface 14 of the first modulation portion 1321 in the second sub-modulation structure 102 for the smaller viewing angle light. This ensures that the positive viewing angle light or near-positive viewing angle light in the first light-emitting element 111 matches the overall light output of the first light-emitting element 111, and the positive viewing angle light or near-positive viewing angle light in the second light-emitting element 112 matches the overall light output of the second light-emitting element 112. This can balance the light output attenuation of different colors of light, avoid the problem of color coordinate center shift caused by the imbalance of red, green and blue color ratios, realize the purpose of narrowing the viewing character coordinate shift trajectory, improve color conversion defects, and achieve the purpose of display white balance.

[0075] like Figure 7 and Figure 8As shown, when the pixel aperture area of ​​the first light-emitting element 111 is larger than the pixel aperture area of ​​the second light-emitting element 112, the light emission of the first light-emitting element 111 is greater than the light emission of the second light-emitting element 112. Considering that the pixel aperture area of ​​the second light-emitting element 112 is smaller, it is more susceptible to brightness attenuation, and the brightness at the side viewing angle is much dimmer than the brightness at the front viewing angle. Since the second modulation section 1322 mainly adjusts the light at a larger viewing angle and the total internal reflection light that cannot be emitted, the thickness b1 of the second modulation section 1322 in the first sub-modulation structure 101 in the first direction Y can be adjusted to be less than the thickness b2 of the second modulation section 1322 in the first direction Y in the second sub-modulation structure 102. This makes the height of the second interface 15 of the second modulation section 1322 in the first sub-modulation structure 101 less than the height of the second interface 15 of the second modulation section 1322 in the second sub-modulation structure 102, and the area of ​​the second interface 15 of the second modulation section 1322 in the first sub-modulation structure 101 less than the area of ​​the second interface 15 of the second modulation section 1322 in the second sub-modulation structure 102. The area of ​​the second interface 15 of the second modulation portion 1322 in the first sub-modulation structure 101 is such that the modulation amount of the second interface 15 of the second modulation portion 1322 of the first sub-modulation structure 101 on the light with a larger viewing angle is less than the modulation amount of the second interface 15 of the second modulation portion 1322 of the second sub-modulation structure 102 on the light with a larger viewing angle. This makes the light emission amount of the first light-emitting element 111 the same or similar to that of the second light-emitting element 112, balances the difference in light emission amount between the first light-emitting element 111 and the second light-emitting element 112, ensures the color mixing effect of the first color light and the second color light, ensures that the display panel will not have a color deviation problem, and ensures the overall display effect of the display panel.

[0076] It should be noted that the above embodiments only address the different pixel aperture areas of the first light-emitting element 111 and the second light-emitting element 112, and the corresponding arrangement of the second modulation structure 132. It is understood that when the display panel includes a first light-emitting element 111, a second light-emitting element 112, and a third light-emitting element with different pixel aperture areas, the arrangement of the second modulation structure 132 corresponding to each light-emitting element 11 follows the same logic. For example, when the pixel aperture area of ​​the first light-emitting element 111 is larger than that of the second light-emitting element 112, the arrangement of the second modulation structure corresponding to the first light-emitting element 111 and the second light-emitting element 112 is as described above. When the pixel aperture area of ​​the second light-emitting element 112 is larger than that of the third light-emitting element, the thickness of the first interface 14 corresponding to the second light-emitting element 112 is greater than the thickness of the first interface 14 corresponding to the third light-emitting element, and the thickness of the second interface 15 corresponding to the second light-emitting element 112 is less than the thickness of the second interface 15 corresponding to the third light-emitting element. When the pixel opening area of ​​the first light-emitting element is greater than the pixel opening area of ​​the third light-emitting element, the thickness of the first interface 14 corresponding to the first light-emitting element 111 is greater than the thickness of the first interface 14 corresponding to the third light-emitting element, and the thickness of the second interface 15 corresponding to the first light-emitting element 111 is less than the thickness of the second interface 15 corresponding to the third light-emitting element.

[0077] Optional, such as Figures 9-11 As shown, the acute angle θ1 between the plane of the first interface 14 in the first sub-modulation structure 101 and the plane of the substrate 10 is different from the acute angle θ2 between the plane of the first interface 14 in the second sub-modulation structure 102 and the plane of the substrate 10; and / or, the acute angle θ3 between the plane of the second interface 15 in the first sub-modulation structure 101 and the plane of the substrate 10 is different from the acute angle θ4 between the plane of the second interface 15 in the second sub-modulation structure 102 and the plane of the substrate 10.

[0078] Among them, such as Figure 9As shown, the acute angle θ1 between the plane of the first interface 14 in the first sub-modulation structure 101 and the plane of the substrate 10 is different from the acute angle θ2 between the plane of the first interface 14 in the second sub-modulation structure 102 and the plane of the substrate 10. This ensures that the two first interfaces 14 with different inclinations modulate the light incident on them at smaller angles to different degrees. The greater the modulation degree, the more light emitted at or near the positive angle; the smaller the modulation degree, the less light emitted at or near the positive angle. In other words, the greater the modulation degree, the greater its contribution to the brightness of the light emitted at the positive angle; the smaller the modulation degree, the smaller its contribution to the brightness of the light emitted at the positive angle. By setting the acute angle θ1 between the plane of the first interface 14 in the first sub-modulation structure 101 and the plane of the substrate 10 to be different from the acute angle θ2 between the plane of the first interface 14 in the second sub-modulation structure 102 and the plane of the substrate 10, the light output brightness of the first light-emitting element 111 at a normal or near-normal viewing angle is matched with the pixel aperture area of ​​the first light-emitting element 111, and the light output brightness of the second light-emitting element 112 at a normal or near-normal viewing angle is matched with the pixel aperture area of ​​the second light-emitting element 112. This can balance the light output attenuation of different colors of light and avoid the problem of color coordinate center shift caused by the excessive proportion of light output attenuation of light-emitting elements with smaller aperture areas to the overall light output, resulting in an imbalance of the red, green, and blue color ratio. By setting the inclination degree of the first interface 14 in the first sub-modulation structure 101 and the first interface 14 in the second sub-modulation structure 102 to be different, the viewing character coordinate offset trajectory is narrowed, color conversion defects are improved, and the purpose of display white balance is achieved.

[0079] like Figure 10As shown, the acute angle θ3 between the plane of the second interface 15 in the first sub-modulation structure 101 and the plane of the substrate 10 is different from the acute angle θ4 between the plane of the second interface 15 in the second sub-modulation structure 102 and the plane of the substrate 10. This ensures that the two second interfaces 15 with different inclinations modulate light rays incident on them at larger angles to different degrees. The greater the modulation degree, the more light rays emitted from the light-emitting surface of the light-emitting element after modulation; the smaller the modulation degree, the less light rays emitted from the light-emitting surface of the light-emitting element after modulation. In other words, the greater the modulation degree, the greater its contribution to the overall brightness of the light-emitting element; the smaller the modulation degree, the smaller its contribution to the overall brightness of the light-emitting element. By setting the acute angle θ1 between the plane of the second interface 15 in the first sub-modulation structure 101 and the plane of the substrate 10 to be different from the acute angle θ2 between the plane of the second interface 15 in the second sub-modulation structure 102 and the plane of the substrate 10, the overall light output of the two light-emitting elements with different pixel opening areas is the same or similar, thus balancing the difference in light output between the first light-emitting element 111 and the second light-emitting element 112, ensuring the color mixing effect of the first color light and the second color light, ensuring that the display panel will not have a color deviation problem, and ensuring the overall display effect of the display panel.

[0080] In addition, such as Figure 11As shown, the acute angle θ1 between the plane of the first interface 14 in the first sub-modulation structure 101 and the plane of the substrate 10, and the acute angle θ2 between the plane of the first interface 14 in the second sub-modulation structure 102 and the plane of the substrate 10 can also be adjusted simultaneously, as well as the acute angle θ3 between the plane of the second interface 15 in the first sub-modulation structure 101 and the plane of the substrate 10, and the acute angle θ4 between the plane of the second interface 15 in the second sub-modulation structure 102 and the plane of the substrate 10. The modulation intensity of the first modulation portion 1321 in the first sub-modulation structure 101 and the first modulation portion 1321 in the second sub-modulation structure 102 for light with a smaller viewing angle is different, so that the light output brightness of the first light-emitting element 111 at a normal or near normal viewing angle matches the pixel aperture area of ​​the first light-emitting element 111, and the light output brightness of the second light-emitting element 112 at a normal or near normal viewing angle matches the pixel aperture area of ​​the second light-emitting element 112. In this way, the light output attenuation of different colors of light can be balanced, thereby reducing the deviation trajectory of the view character coordinates, improving color conversion defects, and achieving the purpose of display white balance. Furthermore, the second modulation portion 1322 in the first sub-modulation structure 101 and the second modulation portion 1322 in the second sub-modulation structure 102 have different modulation intensities for light with a wider viewing angle, so that the overall light output of the two light-emitting elements with different pixel aperture areas is the same or similar, balancing the difference in light output between the first light-emitting element 111 and the second light-emitting element 112, ensuring the color mixing effect of the first color light and the second color light, ensuring that the display panel will not have a color shift problem, and ensuring the overall display effect of the display panel.

[0081] Optional, such as Figures 9-11 As shown, the pixel opening area of ​​the first light-emitting element 111 is larger than the pixel opening area of ​​the second light-emitting element 112; the acute angle θ1 between the plane of the first interface 14 in the first sub-modulation structure 101 and the plane of the substrate 10 is larger than the acute angle θ2 between the plane of the first interface 14 in the second sub-modulation structure 102 and the plane of the substrate 10; and / or, the acute angle θ3 between the plane of the second interface 15 in the first sub-modulation structure 101 and the plane of the substrate 10 is smaller than the acute angle θ4 between the plane of the second interface 15 in the second sub-modulation structure 102 and the plane of the substrate 10.

[0082] Among them, such as Figure 9 and Figure 11As shown, when the pixel aperture area of ​​the first light-emitting element 111 is larger than the pixel aperture area of ​​the second light-emitting element 112, the light emission of the first light-emitting element 111 is greater than the light emission of the second light-emitting element 112. Since the first modulation section 1321 mainly adjusts the smaller angle light to the positive angle light or near-positive angle light, in order to ensure that the positive angle light or near-positive angle light in the first light-emitting element 111 matches the overall light emission of the first light-emitting element 111, and the positive angle light or near-positive angle light in the second light-emitting element 112 matches the overall light emission of the second light-emitting element 112, the acute angle θ1 between the plane of the first interface 14 in the first sub-modulation structure 101 and the plane of the substrate 10 can be adjusted to be greater than the acute angle θ2 between the plane of the first interface 14 in the second sub-modulation structure 102 and the plane of the substrate 10, thus ensuring that the first interface 14 in the first sub-modulation structure 101... The modulation intensity of the light from the smaller viewing angle on the surface 14 is greater than the modulation intensity of the light from the smaller viewing angle on the first interface 14 of the first modulation portion 1321 in the second sub-modulation structure 102. This makes the light output brightness of the first light-emitting element 111 at a normal or near-normal viewing angle match the pixel opening area of ​​the first light-emitting element 111, and the light output brightness of the second light-emitting element 112 at a normal or near-normal viewing angle match the pixel opening area of ​​the second light-emitting element 112. This can balance the light output attenuation of different colors of light, avoid the problem of color coordinate center shift caused by the imbalance of red, green and blue color ratios, realize the goal of narrowing the viewing character coordinate shift trajectory, improving color conversion defects, and achieving display white balance.

[0083] like Figure 10 and Figure 11As shown, when the pixel aperture area of ​​the first light-emitting element 111 is larger than the pixel aperture area of ​​the second light-emitting element 112, the light output of the first light-emitting element 111 is greater than the light output of the second light-emitting element 112. Considering that the pixel aperture area of ​​the second light-emitting element 112 is smaller, it is more susceptible to brightness decay, and the brightness at the side viewing angle is much darker than the brightness at the front viewing angle. Since the second modulation section 1322 mainly adjusts the light from a wider viewing angle and the total internal reflection light that cannot be emitted, it can adjust the acute angle θ3 between the plane of the second interface 15 in the first sub-modulation structure 101 and the plane of the substrate 10 to be smaller than the acute angle θ4 between the plane of the second interface 15 in the second sub-modulation structure 102 and the plane of the substrate 10. This ensures that the modulation intensity of the second interface 15 of the second modulation section 1322 in the first sub-modulation structure 101 for the light from a wider viewing angle is less than that of the second interface 15 of the second modulation section 1322 in the second sub-modulation structure 102 for the light from a wider viewing angle. This makes the overall light output of the two light-emitting elements with different pixel aperture areas the same or similar, balances the difference in light output between the first light-emitting element 111 and the second light-emitting element 112, ensures the color mixing effect of the first color light and the second color light, ensures that the display panel will not have a color shift problem, and ensures the overall display effect of the display panel.

[0084] It should be noted that the above embodiments only illustrate the different pixel aperture areas of the first light-emitting element 111 and the second light-emitting element 112, and the corresponding arrangement of the second modulation structure 132. It is understood that when the display panel includes a first light-emitting element 111, a second light-emitting element 112, and a third light-emitting element with different pixel aperture areas, the arrangement of the second modulation structure corresponding to each light-emitting element 11 follows the same logic. For example, when the pixel aperture area of ​​the first light-emitting element 111 is larger than the pixel aperture area of ​​the second light-emitting element 112, the arrangement of the second modulation structure corresponding to the first light-emitting element 111 and the second light-emitting element 112 is as described above. When the pixel aperture area of ​​the second light-emitting element 112 is larger than the pixel aperture area of ​​the third light-emitting element, the acute angle between the plane of the first interface 14 corresponding to the second light-emitting element 112 and the plane of the substrate 10 is greater than the acute angle between the plane of the first interface 14 corresponding to the third light-emitting element and the plane of the substrate 10, and the acute angle between the plane of the second interface 15 corresponding to the second light-emitting element 112 and the plane of the substrate 10 is smaller than the acute angle between the plane of the second interface 15 corresponding to the third light-emitting element and the plane of the substrate 10. When the pixel aperture area of ​​the first light-emitting element 111 is larger than the pixel aperture area of ​​the third light-emitting element, the acute angle between the plane of the first interface corresponding to the first light-emitting element 111 and the plane of the substrate 10 is greater than the acute angle between the plane of the first interface 14 corresponding to the third light-emitting element and the plane of the substrate 10, and the acute angle between the plane of the second interface 15 corresponding to the first light-emitting element 111 and the plane of the substrate 10 is smaller than the acute angle between the plane of the second interface corresponding to the third light-emitting element and the plane of the substrate 10.

[0085] Furthermore, for light-emitting elements 11 with different emission colors, in order to ensure that the light emission effect of light-emitting elements 11 with different emission colors is the same or similar, the distance between the second modulation structure 132 and the pixel opening area of ​​the light-emitting element 11 along the direction X parallel to the plane where the substrate 10 is located can be adjusted to achieve differentiated design. Three possible implementation methods are described below as examples.

[0086] Figure 12 for Figure 1 Another cross-sectional structure diagram along section line BB'. Figure 13 Figure 1 A schematic diagram of another cross-sectional structure along section line BB'. Figure 14 Figure 1 Another cross-sectional structural diagram along section line BB', as shown below. Figure 5 , Figures 12-14As shown, the first modulation section 1321 includes a first central section 41 and a first functional section 51, with the first functional section 51 surrounding the first central section 41. The first interface 14 is the interface between the first functional section 51 and the first modulation structure 131. The second modulation section 1322 includes a second central section 42 and a second functional section 52, with the second functional section 52 surrounding the second central section 42. The second interface 15 is the interface between the second functional section 52 and the first modulation structure 131. The light-emitting element 11 includes a third light-emitting element 113 and a fourth light-emitting element 114. Optical element 114; a plurality of second modulation structures 132 including a third sub-modulation structure 103 and a fourth sub-modulation structure 104; in the third sub-modulation structure 103, along the first direction Y, the first modulation portion 1321 and the second modulation portion 1322 both cover the third light-emitting element 113; in the fourth sub-modulation structure 104, along the first direction Y, the first modulation portion 1321 and the second modulation portion 1322 both cover the fourth light-emitting element 114; the first modulation portion 1321 in the third sub-modulation structure 103 includes a portion away from the substrate. The first surface 61 on one side of the substrate 10, the second modulation portion 1322 in the third sub-modulation structure 103 includes a second surface 62 on the side away from the substrate 10; the first modulation portion 1321 in the fourth sub-modulation structure 104 includes a third surface 63 on the side away from the substrate 10, and the second modulation portion 1322 in the fourth sub-modulation structure 104 includes a fourth surface 64 on the side away from the substrate 10; along the direction X parallel to the plane where the substrate 10 is located, the minimum distance between the first surface 61 and the pixel opening area of ​​the third light-emitting element 113 is L31, the minimum distance between the second surface 62 and the pixel opening area of ​​the third light-emitting element 113 is L32, the minimum distance between the third surface 63 and the pixel opening area of ​​the fourth light-emitting element 114 is L41, and the minimum distance between the fourth surface 64 and the pixel opening area of ​​the fourth light-emitting element 114 is L42; wherein, the pixel opening area of ​​the third light-emitting element 113 is different from the pixel opening area of ​​the fourth light-emitting element 114; L31≠L41, and / or, L32≠L42.

[0087] The third light-emitting element 113 emits a third color light, which may be the same as or different from the first color light. The fourth light-emitting element 114 emits a fourth color light, which may be the same as or different from the second color light. However, the third and fourth color lights have different wavelengths, meaning they have different colors. The colors of the emitted light from the third and fourth light-emitting elements 113 and 114 can be selected according to actual design requirements, and this embodiment does not impose specific limitations.

[0088] Because the pixel aperture areas of different colored light-emitting elements 11 differ, the amount of light emitted by these elements also differs. Furthermore, due to these differences in pixel aperture areas, the varying degrees of modulation applied to different colors by the optical modulation structure 13 after its implementation can lead to a decrease in the white balance display effect of the display panel. Therefore, a second modulation structure 132 can be configured according to the pixel aperture areas of the light-emitting elements 11 to balance the differences in light emission between the different colored light-emitting elements 11, ensuring the color mixing effect of different colors and preventing color shift issues in the display panel. Simultaneously, it can also improve the white balance effect, ensuring the overall display effect of the display panel.

[0089] Specifically, considering that the pixel aperture area of ​​the third light-emitting element 113 is different from that of the fourth light-emitting element 114, and that the light emission amount and total light emission amount of the third light-emitting element 113 and the fourth light-emitting element 114 differ at small viewing angles, a differentiated design can be made along the direction X parallel to the plane of the substrate 10. This design ensures that the light emission amount of the third light-emitting element 113 at small viewing angles matches the pixel aperture area of ​​the third light-emitting element 113, and the light emission amount of the fourth light-emitting element 114 at small viewing angles matches the pixel aperture area of ​​the fourth light-emitting element 114, thereby guaranteeing the white balance effect of the display panel. Furthermore, the differentiated design of the third sub-modulation structure 103 and the fourth sub-modulation structure 104 can also adjust the total light output of the third light-emitting element 113 to be the same as or similar to the total light output of the fourth light-emitting element 114, ensuring the color mixing effect of different colors of light, ensuring that the display panel will not have the problem of color deviation, and ensuring the overall display effect of the display panel.

[0090] As one possible implementation method, such as Figure 12As shown, along the direction X parallel to the plane where the substrate 10 is located, the distance between the first interface 14 and the pixel opening area of ​​the light-emitting element affects the amount of light received by the first interface at a smaller viewing angle. Therefore, the minimum distance L31 between the first surface 61 of the first modulation portion 1321 in the third sub-modulation structure 103 and the pixel opening area of ​​the third light-emitting element 113 is set to be different from the minimum distance L41 between the third surface 63 of the first modulation portion 1321 in the fourth sub-modulation structure 104 and the pixel opening area of ​​the fourth light-emitting element 114. This makes the modulation amount of the first interface 14 of the third sub-modulation structure 103 and the first interface 14 of the fourth sub-modulation structure 104 different from that of the light at a smaller viewing angle. This makes the light output of different colored light-emitting elements at a small viewing angle positively correlated with the pixel opening area of ​​the light-emitting element. This can reduce the white balance color shift at a normal or near-normal viewing angle, thereby ensuring the display effect of the display panel.

[0091] As another possible implementation method, such as Figure 13 As shown, the minimum distance L32 between the second surface 62 of the second modulation portion 1322 in the third sub-modulation structure 103 and the pixel opening area of ​​the third light-emitting element 113 is different from the minimum distance L42 between the fourth surface 64 of the second modulation portion 1322 in the fourth sub-modulation structure 104 and the pixel opening area of ​​the fourth light-emitting element 114. This makes the modulation amount of the second interface 15 of the third sub-modulation structure 103 and the second interface 15 of the fourth sub-modulation structure 104 for light with a larger viewing angle different, thereby reducing the difference in light output between the third light-emitting element 113 and the fourth light-emitting element 114. This ensures that the light output of the third light-emitting element 113 is the same as or similar to that of the fourth light-emitting element 114, guarantees the color mixing effect of different colors of light, ensures that the display panel will not have a color shift problem, and ensures the overall display effect of the display panel.

[0092] As another possible implementation method, such as Figure 14As shown, the minimum distance L31 between the first surface 61 of the first modulation portion 1321 in the third sub-modulation structure 103 and the pixel opening region of the third light-emitting element 113, and the minimum distance L41 between the third surface 63 of the first modulation portion 1321 in the fourth sub-modulation structure 104 and the pixel opening region of the fourth light-emitting element 114 can also be adjusted simultaneously. This design ensures that the first interface 14 of the third sub-modulation structure 103 and the first interface 14 of the fourth sub-modulation structure 104 have different modulation amounts for light at smaller viewing angles. This guarantees that the first modulation portion 1321 in the third sub-modulation structure 103 and the first modulation portion 1321 in the fourth sub-modulation structure 104 have different modulation amounts for light at smaller viewing angles. This allows the light output of the third light-emitting element 113 at a normal or near-normal viewing angle to match the pixel aperture area of ​​the third light-emitting element 113, and the light output of the fourth light-emitting element 114 at a normal or near-normal viewing angle to match the pixel aperture area of ​​the fourth light-emitting element 114. This balances the light attenuation of different colors, avoids the problem of color coordinate center shift caused by the imbalance of red, green and blue color ratios, and achieves the purpose of narrowing the view character coordinate shift trajectory, improving color conversion defects, and realizing display white balance. Furthermore, the second interface 15 of the third sub-modulation structure 103 and the second interface 15 of the fourth sub-modulation structure 104 have different modulation amounts for light at a wider viewing angle, thereby reducing the difference in light output between the third light-emitting element 113 and the fourth light-emitting element 114. This ensures that the light output of the third light-emitting element 113 is the same as or similar to that of the fourth light-emitting element 114, guaranteeing the color mixing effect of different colors of light, ensuring that the display panel will not have color shift issues, and guaranteeing the overall display effect of the display panel.

[0093] Optional, such as Figures 12 to 14 As shown, the pixel opening area of ​​the third light-emitting element 113 is larger than the pixel opening area of ​​the fourth light-emitting element 114; L31 < L41, and / or, L32 < L42.

[0094] Among them, such as Figure 12 and Figure 14As shown, the pixel aperture area of ​​the third light-emitting element 113 is larger than that of the fourth light-emitting element 114, and the light emission of the third light-emitting element 113 is greater than that of the fourth light-emitting element 114. Since the first modulation section 1321 mainly adjusts the smaller angle light to the positive angle light or near-positive angle light, in order to ensure that the positive angle light or near-positive angle light in the third light-emitting element 113 matches the overall light emission of the third light-emitting element 113, and the positive angle light or near-positive angle light in the fourth light-emitting element 114 matches the overall light emission of the fourth light-emitting element 114, the minimum distance L31 between the first surface 61 of the first modulation section 1321 in the third sub-modulation structure 103 and the pixel aperture area of ​​the third light-emitting element 113 is less than the minimum distance L41 between the third surface 63 of the first modulation section 1321 in the fourth sub-modulation structure 104 and the pixel aperture area of ​​the fourth light-emitting element 114. That is, the first interface 14 in the third sub-modulation structure 103 is closer to the pixel aperture position of the third light-emitting element 113, which can ensure that the third light-emitting element 113... The smaller angle light emitted from element 113 can be more incident on the first interface 14 in the third sub-modulation structure 103. That is, the modulation amount of the smaller angle light by the first interface 14 of the first modulation portion 1321 in the third sub-modulation structure 103 is greater than the modulation amount of the smaller angle light by the first interface 14 of the first modulation portion 1321 in the fourth sub-modulation structure 104. This ensures that the positive angle light or near-positive angle light in the third light-emitting element 113 matches the overall light output of the third light-emitting element 113, and the positive angle light or near-positive angle light in the fourth light-emitting element 114 matches the overall light output of the fourth light-emitting element 114. In this way, the light output attenuation of different colors can be balanced, avoiding the problem of color coordinate center shift caused by the imbalance of red, green and blue color ratios. This achieves the purpose of narrowing the view character coordinate shift trajectory, improving color conversion defects, and realizing the display white balance.

[0095] like Figure 13 and Figure 14As shown, the pixel aperture area of ​​the third light-emitting element 113 is larger than that of the fourth light-emitting element 114, and the light emission of the third light-emitting element 113 is greater than that of the fourth light-emitting element 114. Considering that the pixel aperture area of ​​the fourth light-emitting element 114 is smaller, it is more susceptible to brightness attenuation, and the brightness at the side viewing angle is much dimmer than that at the front viewing angle. Since the second modulation section 1322 mainly modulates the light with a larger viewing angle and modulates the total internal reflection light that cannot be emitted, the minimum distance L32 between the second surface 62 of the second modulation section 1322 in the third sub-modulation structure 103 and the pixel aperture area of ​​the third light-emitting element 113 can be adjusted to be smaller than the minimum distance L42 between the fourth surface 64 of the second modulation section 1322 in the fourth sub-modulation structure 104 and the pixel aperture area of ​​the fourth light-emitting element 114. That is, the second interface 15 in the fourth sub-modulation structure 104 is closer to the pixel aperture position of the fourth light-emitting element 114, which can ensure that the light emitted by the fourth light-emitting element 114 at a larger viewing angle... More light can be incident on the second interface 14 in the fourth sub-modulation structure 104, which means that the second interface 15 of the second modulation portion 1322 in the fourth sub-modulation structure 104 can modulate the light at a wider viewing angle more than the second interface 15 of the second modulation portion 1322 in the third sub-modulation structure 103. This makes the light output of the third light-emitting element 113 the same as or similar to that of the fourth light-emitting element 114, balancing the difference in light output between the third light-emitting element 113 and the fourth light-emitting element 114, ensuring the color mixing effect of different colors of light, ensuring that the display panel will not have a color shift problem, and ensuring the overall display effect of the display panel.

[0096] It should be noted that the above embodiments only address the different pixel aperture areas of the third light-emitting element 113 and the fourth light-emitting element 114, and the corresponding arrangement of the second modulation structure 112. It is understood that when the display panel includes a third light-emitting element 113, a fourth light-emitting element 114, and a fifth light-emitting element with different pixel aperture areas, the arrangement of the second modulation structure corresponding to each light-emitting element follows the same logic. For example, when the pixel aperture area of ​​the third light-emitting element 113 is larger than the pixel aperture area of ​​the fourth light-emitting element 114, the arrangement of the second modulation structure 112 corresponding to the third light-emitting element 113 and the fourth light-emitting element is as described above. When the pixel aperture area of ​​the fourth light-emitting element 114 is greater than the pixel aperture area of ​​the fifth light-emitting element, the minimum distance between the first interface 14 corresponding to the fourth light-emitting element 114 and the pixel aperture area of ​​the fourth light-emitting element 114 is less than the minimum distance between the first interface 14 corresponding to the fifth light-emitting element and the pixel aperture area of ​​the fifth light-emitting element; and the minimum distance between the second interface corresponding to the fourth light-emitting element 114 and the pixel aperture area of ​​the fourth light-emitting element 114 is less than the minimum distance between the second interface 15 corresponding to the fifth light-emitting element and the pixel aperture area of ​​the fifth light-emitting element. Similarly, when the pixel aperture area of ​​the third light-emitting element 113 is greater than the pixel aperture area of ​​the fifth light-emitting element, the minimum distance between the first interface 14 corresponding to the third light-emitting element 113 and the pixel aperture area of ​​the third light-emitting element is less than the minimum distance between the first interface 14 corresponding to the fifth light-emitting element and the pixel aperture area of ​​the fifth light-emitting element; and the minimum distance between the second interface 15 corresponding to the third light-emitting element 113 and the pixel aperture area of ​​the third light-emitting element is less than the minimum distance between the second interface 15 corresponding to the fifth light-emitting element and the pixel aperture area of ​​the fifth light-emitting element.

[0097] Optional, Figure 15 A top view schematic diagram of another second modulation structure provided in the embodiments of this application; Figure 16 for Figure 15 A schematic diagram of a cross-sectional structure along the section line CC', such as... Figure 15 and Figure 16 As shown, the first functional unit 51 includes a first sub-functional unit 511 and a second sub-functional unit 512. The direction of the first sub-functional unit 511 pointing to the first center part 41 intersects the direction of the second sub-functional unit 512 pointing to the first center part 41. The maximum thickness D1 of the first sub-functional unit 511 is equal to the maximum thickness D2 of the second sub-functional unit 512.

[0098] The first functional unit 51 is disposed around the first central portion 41. In a plane parallel to the first direction Y, the first sub-functional unit 511 and the second sub-functional unit 512 are located on different sides of the first central portion 41, and the direction in which the first sub-functional unit 511 points towards the first central portion 41 intersects the direction in which the second sub-functional unit 512 points towards the first central portion 41. For example, when the shape of the pixel opening region is rectangular, the first sub-functional unit 511 can correspond to the long side of the rectangle, and the second sub-functional unit 512 can correspond to the short side of the rectangle. For the first modulation section 1321 in the same second modulation structure 132, the maximum thickness D1 of the first sub-functional section 511 is set to be equal to the maximum thickness D2 of the second sub-functional section 512. That is, the first functional sections 51 located in different ranges of the first central section 41 have the same maximum thickness, so that the modulation effect of the first functional sections 51 at different positions on the light with a smaller viewing angle is the same, so that the light emission effect of the same light-emitting element 11 at different orientations with a positive or near-positive viewing angle is the same, ensuring that the light-emitting element 11 will not have display differences at different orientations, and ensuring the light emission effect of the light-emitting element 11.

[0099] Optional, see reference Figure 15 and Figure 16 As shown, the second functional unit 52 includes a third sub-functional unit 521 and a fourth sub-functional unit 522. The direction of the third sub-functional unit 521 pointing towards the second center unit 42 intersects the direction of the fourth sub-functional unit 522 pointing towards the second center unit 42. The maximum thickness D3 of the third sub-functional unit 521 is equal to the maximum thickness D4 of the fourth sub-functional unit 522.

[0100] The second functional unit 52 is disposed around the second central portion 42 in a plane parallel to the first direction Y. The third sub-functional unit 521 and the fourth sub-functional unit 522 are located on different sides of the second central portion 42. Furthermore, the direction in which the third sub-functional unit 521 points towards the second central portion 42 intersects the direction in which the fourth sub-functional unit 522 points towards the second central portion 42. For example, when the shape of the pixel opening region is rectangular, the third sub-functional unit 521 corresponds to the long side of the rectangle, and the fourth sub-functional unit 522 corresponds to the short side of the rectangle. For the second modulation section 1322 in the same second modulation structure 132, the maximum thickness D3 of the third sub-functional section 513 is set to be equal to the maximum thickness D4 of the fourth sub-functional section 514. That is, the second functional sections 52 located in different ranges of the second center section 42 have the same maximum thickness, so that the modulation effect of the second functional sections 52 at different positions on the light with a larger viewing angle is the same, so that the light output of the same light-emitting element 11 at different positions is the same or similar, ensuring that the light-emitting element 11 will not have display differences at different positions, and ensuring the light output effect of the light-emitting element 11.

[0101] Optional, Figure 17A top view schematic diagram of yet another second modulation structure provided in the embodiments of this application; Figure 18 for Figure 17 A schematic diagram of a cross-sectional structure along the section line DD', such as... Figure 17 and Figure 18 As shown, the first functional unit 51 includes a fifth sub-functional unit 513 and a sixth sub-functional unit 514. The direction of the fifth sub-functional unit 513 pointing towards the first center unit 41 intersects the direction of the sixth sub-functional unit 514 pointing towards the first center unit 41. The first interface 14 includes a first sub-interface 141 located in the fifth sub-functional unit 513 and a second sub-interface 142 located in the sixth sub-functional unit 514. The acute angle θ11 between the plane where the first sub-interface 141 is located and the plane where the substrate 10 is located is equal to the acute angle θ12 between the plane where the second sub-interface 142 is located and the plane where the substrate 10 is located.

[0102] The first functional unit 51 is disposed around the first central portion 41, and the fifth sub-functional unit 513 and the sixth sub-functional unit 514 are located on different sides of the first central portion 41 in a plane parallel to the first direction Y. Furthermore, the direction in which the fifth sub-functional unit 513 points towards the first central portion 41 intersects the direction in which the sixth sub-functional unit 514 points towards the first central portion 41. For example, when the shape of the pixel opening region is rectangular, the fifth sub-functional unit 513 corresponds to the long side of the rectangle, or the sixth sub-functional unit 514 corresponds to the short side of the rectangle. For the first modulation section 1321 in the same second modulation structure 132, the acute angle θ11 between the plane where the first sub-interface 141 is located and the plane where the substrate 10 is located is set to be equal to the acute angle θ12 between the plane where the second sub-interface 142 is located and the plane where the substrate 10 is located. That is, the first functional section 51 located in different ranges of the first central section 41 has the same degree of modulation, so that the first functional section 51 at different positions has the same modulation effect on the light with a smaller viewing angle. This makes the light emission effect of the same light-emitting element 11 at different orientations with the same positive or near-positive viewing angle, ensuring that the light-emitting element 11 will not have display differences at different orientations and ensuring the light emission effect of the light-emitting element 11.

[0103] Optional, continue to refer to Figure 17 and Figure 18 The second functional unit 52 includes a seventh sub-functional unit 523 and an eighth sub-functional unit 524. The direction of the seventh sub-functional unit 523 pointing to the second center unit 42 intersects the direction of the eighth sub-functional unit 524 pointing to the second center unit 42. The second interface 15 includes a third sub-interface 151 located in the seventh sub-functional unit 523 and a fourth sub-interface 152 located in the eighth sub-functional unit 524. The acute angle θ13 between the plane where the third sub-interface 151 is located and the plane where the substrate 10 is located is equal to the acute angle θ14 between the plane where the fourth sub-interface 152 is located and the plane where the substrate 10 is located.

[0104] The second functional unit 52 is disposed around the second central portion 42, and the seventh sub-functional unit 523 and the eighth sub-functional unit 524 are located on different sides of the second central portion 42 in a plane parallel to the first direction Y. Furthermore, the direction in which the seventh sub-functional unit 523 points towards the second central portion 42 intersects the direction in which the eighth sub-functional unit 524 points towards the second central portion 42. For example, when the shape of the pixel opening region is rectangular, the seventh sub-functional unit 523 corresponds to the long side of the rectangle, and the eighth sub-functional unit 524 corresponds to the short side of the rectangle. For the second modulation section 1322 in the same second modulation structure 132, the acute angle θ13 between the plane where the third sub-interface 151 is located and the plane where the substrate 10 is located is set to be equal to the acute angle θ14 between the plane where the fourth sub-interface 152 is located and the plane where the substrate 10 is located. That is, the second functional section 52 located in different ranges of the second center section 42 has the same degree of modulation, so that the second functional section 52 at different positions has the same modulation effect on the light with a larger viewing angle. This makes the light output of the same light-emitting element 11 at different positions the same or similar, ensuring that the light-emitting element 11 will not have display differences at different positions, and ensuring the light output effect of the light-emitting element 11.

[0105] Optional, Figure 19 A top view schematic diagram of another second modulation structure provided in the embodiments of this application; Figure 20 for Figure 19 A schematic diagram of a cross-sectional structure along the section line EE', such as... Figure 19 and Figure 20 As shown, the first functional unit 51 includes a ninth sub-functional unit 515 and a tenth sub-functional unit 516. The direction of the ninth sub-functional unit 515 pointing towards the first center part 41 intersects the direction of the tenth sub-functional unit 516 pointing towards the first center part 41. Along the direction X parallel to the plane where the substrate 10 is located, the minimum distance between the ninth sub-functional unit 515 and the pixel opening area of ​​the light-emitting element 11 it covers is d1, and the minimum distance between the tenth sub-functional unit 516 and the pixel opening area of ​​the light-emitting element 11 it covers is d2; where d1=d2.

[0106] The first functional unit 51 is disposed around the first central portion 41, and the ninth sub-functional unit 515 and the tenth sub-functional unit 516 are located on different sides of the first central portion 41 in a plane parallel to the first direction Y. Furthermore, the direction in which the ninth sub-functional unit 515 points towards the first central portion 41 intersects the direction in which the tenth sub-functional unit 516 points towards the first central portion 41. For example, when the shape of the pixel opening region is rectangular, the ninth sub-functional unit 515 corresponds to the long side of the rectangle, and the tenth sub-functional unit 516 corresponds to the short side of the rectangle. For the first modulation section 1321 in the same second modulation structure 132, the minimum distance d1 between the ninth sub-functional section 515 and the pixel opening area of ​​the light-emitting element 11 it covers is the same as the minimum distance d2 between the tenth sub-functional section 516 and the pixel opening area of ​​the light-emitting element 11 it covers. That is, the distance between the first functional section 51 located in different ranges of the first central section 41 and the pixel opening position of the light-emitting element 11 it covers is the same. This ensures that the modulation effect of the first functional section 51 at different positions on the light with a smaller viewing angle is the same, so that the light emission effect of the same light-emitting element 11 at different orientations with a positive or near-positive viewing angle is the same. This ensures that the light-emitting element 11 will not have display differences at different orientations and ensures the light emission effect of the light-emitting element 11.

[0107] Optional, continue to refer to Figure 19 and Figure 20 The second functional unit 52 includes an eleventh sub-functional unit 525 and a twelfth sub-functional unit 526. The direction in which the eleventh sub-functional unit 525 points toward the second center part 42 is different from the direction in which the twelfth sub-functional unit 526 points toward the second center part 42. Along the direction X parallel to the plane where the substrate 10 is located, the minimum distance between the eleventh sub-functional unit 525 and the pixel opening area of ​​the light-emitting element 11 it covers is d3, and the minimum distance between the twelfth sub-functional unit 526 and the pixel opening area of ​​the light-emitting element 11 it covers is d4; where d3=d4.

[0108] The second functional unit 52 is disposed around the second central portion 42, and the eleventh sub-functional unit 525 and the twelfth sub-functional unit 526 are located on different sides of the second central portion 42 in a plane parallel to the first direction Y. Furthermore, the direction in which the eleventh sub-functional unit 525 points towards the second central portion 42 is different from the direction in which the twelfth sub-functional unit 526 points towards the second central portion 42. For example, when the shape of the pixel opening region is rectangular, the eleventh sub-functional unit 525 corresponds to the long side of the rectangle, and the twelfth sub-functional unit 526 corresponds to the short side of the rectangle. For the second modulation sub-section 1322 in the same second modulation structure 132, the distance between the second functional section 52 located in different ranges of the second central part 42 and the pixel opening position of the light-emitting element 11 it covers is the same. The minimum distance d3 between the eleventh sub-functional section 525 and the pixel opening area of ​​the light-emitting element 11 it covers and the minimum distance d4 between the twelfth sub-functional section 526 and the pixel opening area of ​​the light-emitting element 11 it covers are the same. That is, the distance between the second functional section 52 located in different ranges of the second central part 42 and the pixel opening position of the light-emitting element 11 it covers is the same. This makes the modulation effect of the second functional section 52 at different positions on the light with a larger viewing angle the same, so that the light output of the same light-emitting element 11 is the same or similar in different directions, ensuring that the light-emitting element 11 will not have display differences in different directions, and ensuring the light output effect of the light-emitting element 11.

[0109] When the pixel opening region of the light-emitting element 11 has long and short sides of different lengths, the attenuation of the viewing angle brightness on the long side is less than that on the short side. Therefore, the second modulation structure 132 corresponding to different length sides in the same light-emitting element 11 can be differentiated to ensure the consistency of the viewing angle brightness of the light-emitting element 11 in different directions. Four possible implementation methods are shown below.

[0110] As one possible implementation method, Figure 21 This is a partial structural diagram of a display panel provided in an embodiment of this application. Figure 22 for Figure 21 A schematic diagram of a cross-sectional structure along section line FF'. Figure 23 for Figure 21 A schematic diagram of a cross-sectional structure along section line GG', such as... Figures 21-23As shown, the light-emitting element 11 includes a fifth light-emitting element 115, and a plurality of second modulation structures 132 include a fifth sub-modulation structure 105. Along the first direction Y, the fifth sub-modulation structure 105 and the fifth light-emitting element 115 at least partially overlap. The pixel opening region of the fifth light-emitting element 115 includes a first side 71 and a second side 72. The first interface 14 in the fifth sub-modulation structure 105 includes a fifth sub-interface 143 and a sixth sub-interface 144. The orthographic projection of the fifth sub-interface 143 on the plane where the substrate 10 is located is located on one side of the orthographic projection of the first side 71 on the plane where the substrate 10 is located. The orthographic projection of the sixth sub-interface 144 on the plane where the substrate 10 is located is located on one side of the orthographic projection of the second side 72 on the plane where the substrate 10 is located. The length of the first side 71 is greater than the length of the second side 72. The acute angle θ15 between the plane where the fifth sub-interface 143 is located and the plane where the substrate 10 is located is greater than the acute angle θ16 between the plane where the sixth sub-interface 144 is located and the plane where the substrate 10 is located.

[0111] For example, the pixel opening region of the fifth light-emitting element 115 is rectangular in shape, and includes a first side 71 and a second side 72, with the length of the first side 71 being greater than the length of the second side 72. For the first modulation portion 1321 in the same second modulation structure 132, the fifth sub-interface 143 corresponds to the first side 71, and the sixth sub-interface 144 corresponds to the second side 72. The acute angle θ15 between the plane of the fifth sub-interface 143 and the plane of the substrate 10 is set to be greater than the acute angle θ16 between the plane of the sixth sub-interface 144 and the plane of the substrate 10. This results in different inclinations of the fifth sub-interface 143 and the sixth sub-interface 144, leading to different modulation degrees of light at smaller viewing angles. This ensures that the modulation intensity of the fifth sub-interface 143 on light at smaller viewing angles is greater than that of the sixth sub-interface 144. Consequently, the light output brightness of the fifth light-emitting element 115 at different side lengths under normal or near-normal viewing angles matches the side length of the fifth light-emitting element 115. This balances the light output attenuation of the fifth light-emitting element 115 in different light output directions, ensuring that the fifth light-emitting element 115 does not exhibit display differences in different orientations and guaranteeing the light output effect of the fifth light-emitting element 115.

[0112] As another possible implementation method, such as Figures 21-23As shown, the light-emitting element 11 includes a sixth light-emitting element 116, and the plurality of second modulation structures 132 include a sixth sub-modulation structure 106. Along the first direction Y, the sixth sub-modulation structure 106 and the sixth light-emitting element 116 at least partially overlap. The pixel opening region of the sixth light-emitting element 116 includes a third side 73 and a fourth side 74. The second interface 15 in the sixth sub-modulation structure 106 includes a seventh sub-interface 153 and an eighth sub-interface 154. The orthographic projection of the seventh sub-interface 153 on the plane where the substrate 10 is located is located on one side of the orthographic projection of the third side 73 on the plane where the substrate 10 is located, and the orthographic projection of the eighth sub-interface 154 on the plane where the substrate 10 is located is located on one side of the orthographic projection of the fourth side 74 on the plane where the substrate 10 is located. The length of the third side 73 is greater than the length of the fourth side 74. The acute angle θ17 between the plane where the seventh sub-interface 153 is located and the plane where the substrate 10 is located is less than the acute angle θ18 between the plane where the eighth sub-interface 154 is located and the plane where the substrate 10 is located.

[0113] The sixth light-emitting element 116 and the fifth light-emitting element 115 can be the same light-emitting element 11, or they can be different light-emitting elements. Figures 21-23 The following explanation uses the example of the sixth light-emitting element 116 and the fifth light-emitting element 115 being the same light-emitting element. For example, the pixel opening area of ​​the sixth light-emitting element 116 is rectangular in shape, and the pixel opening area of ​​the sixth light-emitting element 116 includes a third side 73 and a fourth side 74, with the length of the third side 73 being greater than the length of the fourth side 74. For the second modulation section 1322 in the same second modulation structure 132, the seventh sub-interface 153 corresponds to the third side 73, and the eighth sub-interface 154 corresponds to the fourth side 74. The acute angle θ17 between the plane where the seventh sub-interface 153 is located and the plane where the substrate 10 is located is set to be less than the acute angle θ18 between the plane where the eighth sub-interface 154 is located and the plane where the substrate 10 is located. That is, the tilt of the seventh sub-interface 153 and the eighth sub-interface 154 are different, and the modulation degree of light with a larger viewing angle is different. This can ensure that the modulation intensity of the seventh sub-interface 153 on the light with a larger viewing angle is less than the modulation intensity of the eighth sub-interface 154 on the light with a larger viewing angle. This makes the overall light output of the sixth light-emitting element 116, which has different side lengths of pixel openings, the same or similar in the long and short side corresponding positions. This balances the difference in light output of the sixth light-emitting element 116 in the long and short side corresponding positions, ensuring that the sixth light-emitting element 116 will not have display differences in different positions, and ensuring the light output effect of the sixth light-emitting element 116.

[0114] As another possible implementation method Figure 24 This is a partial structural diagram of another display panel provided in an embodiment of this application. Figure 25 for Figure 24 A schematic diagram of a cross-sectional structure along section line HH'. Figure 26 for Figure 24 A schematic diagram of a cross-sectional structure along section line II', as follows: Figures 24-26 As shown, the light-emitting element 11 includes a seventh light-emitting element 117, and a plurality of second modulation structures 132 include a seventh sub-modulation structure 107; along the first direction Y, the first modulation portion 1321 in the seventh sub-modulation structure 107 covers the seventh light-emitting element 117; the pixel opening region of the seventh light-emitting element 117 includes a fifth side 75 and a sixth side 76; the first modulation portion 1321 in the seventh sub-modulation structure 107 includes a fifth surface 65 on the side away from the substrate 10, the fifth surface 65 includes a seventh side 77 and an eighth side 78, along the direction X parallel to the plane where the substrate 10 is located, the seventh side 77 is located on the side of the fifth side 75, and the eighth side 78 is located on the side of the sixth side 76; the length of the fifth side 75 is greater than the length of the sixth side 76, and along the direction X parallel to the plane where the substrate 10 is located, the minimum distance L51 between the seventh side 77 and the fifth side 75 is less than the minimum distance L52 between the eighth side 78 and the sixth side 76.

[0115] For example, the pixel opening region of the seventh light-emitting element 117 is rectangular, and includes a fifth side 75 and a sixth side 76, with the length of the fifth side 75 being greater than the length of the sixth side 76. For the first modulation portion 1321 in the same second modulation structure 132, the fifth side 75 and the seventh side 77 of the fifth surface 65 in the seventh sub-modulation structure 107 are on the same side, and the sixth side 76 and the eighth side 78 of the fifth surface 65 in the seventh sub-modulation structure 107 are on the same side. The minimum distance L51 between the seventh side 77 and the fifth side 75 is less than the minimum distance L52 between the eighth side 78 and the sixth side 76 along the direction X parallel to the plane of the substrate 10. That is, the fifth side 75 is closer to the pixel opening region of the seventh light-emitting element 117 than the sixth side 76, such that the first interface 14 corresponding to the seventh side 77 and the eighth side 76 are on the same side. The modulation amounts of the first interface 14 at the eight locations differ for the smaller viewing angle light. This ensures that in the seventh sub-adjustment structure 107, the modulation amount of the first interface 14 corresponding to the fifth side 75 for the smaller viewing angle light is greater than that of the first interface 14 corresponding to the sixth side 76. This ensures that the light output brightness of the seventh light-emitting element 117 at different side lengths under a normal or near-normal viewing angle matches the side length of the seventh light-emitting element 117. This balances the light output attenuation in different light output directions of the seventh light-emitting element 117, so that the light output brightness at different side lengths of the seventh light-emitting element 117 under normal or near-normal viewing angles is the same or similar.

[0116] As another possible implementation method, such as Figures 24-26As shown, the light-emitting element 11 includes an eighth light-emitting element 118, and a plurality of second modulation structures 132 include an eighth sub-modulation structure 108; along the first direction Y, the second modulation portion 1322 in the eighth sub-modulation structure 108 covers the eighth light-emitting element 118; the pixel opening region of the eighth light-emitting element 118 includes a ninth side 79 and a tenth side 710; the second modulation portion 1322 in the eighth sub-modulation structure 108 includes a sixth surface 66 on the side away from the substrate 10, the sixth surface 66 includes an eleventh side 711 and a twelfth side 712, along the direction X parallel to the plane where the substrate 10 is located, the eleventh side 711 is located on the side of the ninth side 79, and the twelfth side 712 is located on the side of the tenth side 710; the length of the ninth side 79 is greater than the length of the tenth side 710, and along the direction X parallel to the plane where the substrate 10 is located, the minimum distance L53 between the eleventh side 711 and the ninth side 79 is less than the minimum distance L54 between the twelfth side 712 and the tenth side 710.

[0117] The eighth light-emitting element 118 and the seventh light-emitting element 117 can be the same light-emitting element 11, or they can be different light-emitting elements. Figures 24-26Taking the eighth light-emitting element 118 and the seventh light-emitting element 117 as the same light-emitting element as an example, the pixel opening region of the eighth light-emitting element 118 is rectangular in shape. The pixel opening region of the eighth light-emitting element 118 includes a ninth side 79 and a tenth side 710, and the length of the ninth side 79 is greater than the length of the tenth side 710. For the second modulation sub-section 1322 in the same second modulation structure 132, the ninth side 79 is on the same side as the eleventh side 711 of the sixth surface 66 in the eighth sub-modulation structure 108, and the tenth side 710 is on the same side as the twelfth side 712 of the sixth surface 66 in the eighth sub-modulation structure 108. The minimum distance L53 between the eleventh side 711 and the ninth side 79 is less than the minimum distance L54 between the twelfth side 712 and the tenth side 710 along the direction X parallel to the plane of the substrate 10. That is, the ninth side 79 is closer to the pixel opening region of the eighth light-emitting element 118 than the tenth side 710, so that the second interface 15 corresponding to the ninth side 79 and the second interface corresponding to the tenth side 710 are... The modulation amounts of the 15 pairs of light rays with a larger viewing angle differ, ensuring that in the eighth sub-adjustment structure 108, the modulation amount of the second interface 15 corresponding to the ninth side 79 for the light rays with a larger viewing angle is less than that of the second interface 15 corresponding to the tenth side 710 for the light rays with a larger viewing angle. This makes the overall light output of the eighth light-emitting element 118, whose pixel opening side lengths differ, the same or similar in the corresponding positions of the long and short sides. This balances the difference in light output of the eighth light-emitting element 118 in the corresponding positions of the long and short sides, so that the light output of the eighth light-emitting element 118 is the same or similar in different side lengths, ensuring that the eighth light-emitting element 118 will not have display differences in different positions, and ensuring the light output effect of the eighth light-emitting element 118.

[0118] When the pixel opening regions of different light-emitting elements 11 have the same length of side edges, the corresponding second modulation structure 132 can adopt the same structure. Four possible implementation methods are shown below.

[0119] As one possible implementation method, Figure 27 This is a partial structural diagram of another display panel provided in an embodiment of this application. Figure 28 for Figure 27 A schematic diagram of a cross-sectional structure along section line JJ', such as... Figure 27 and Figure 28As shown, the light-emitting element 11 includes a ninth light-emitting element 119 and a tenth light-emitting element 1110, and the plurality of second modulation structures 132 include a ninth sub-modulation structure 109 and a tenth sub-modulation structure 1010; along the first direction Y, the ninth sub-modulation structure 109 at least partially overlaps with the ninth light-emitting element 119, and the tenth sub-modulation structure 1010 at least partially overlaps with the tenth light-emitting element 1110; the pixel opening region of the ninth light-emitting element 119 includes a thirteenth side 713, the first interface 14 in the ninth sub-modulation structure 109 includes a ninth sub-interface 145, and the orthographic projection of the ninth sub-interface 145 onto the plane of the substrate 10 is located on the thirteenth side 713. 3. On one side of the orthogonal projection of the plane where the substrate 10 is located; the pixel opening region of the tenth light-emitting element 1110 includes the fourteenth side 714, the first interface 14 in the tenth sub-modulation structure 1010 includes the tenth sub-interface 146, the orthogonal projection of the tenth sub-interface 146 on the plane where the substrate 10 is located is located on one side of the orthogonal projection of the fourteenth side 714 on the plane where the substrate 10 is located; the length of the thirteenth side 713 is the same as the length of the fourteenth side 714, the acute angle θ21 between the plane where the ninth sub-interface 145 is located and the plane where the substrate 10 is located is equal to the acute angle θ22 between the plane where the tenth sub-interface 146 is located and the plane where the substrate 10 is located.

[0120] The light emitted by the ninth light-emitting element 119 can be the same as or different from the light emitted by the first color light; the light emitted by the tenth light-emitting element 1110 can be the same as or different from the light emitted by the second color light; however, the light emitted by the ninth light-emitting element 119 and the tenth light-emitting element 1110 are different. The colors of the ninth light-emitting element 119 and the tenth light-emitting element 1110 can be set according to actual design requirements, and this embodiment does not impose specific limitations.

[0121] When the length of the thirteenth side 713 of the pixel opening region corresponding to the ninth light-emitting element 119 is the same as the length of the fourteenth side 714 of the pixel opening region corresponding to the tenth light-emitting element 1110, for the first modulation division 1321 in different second modulation structures 132, the acute angle θ21 between the plane where the ninth sub-interface 145 in the ninth sub-modulation structure 109 is located and the plane where the substrate 10 is located is set to be equal to the acute angle θ22 between the plane where the tenth sub-interface 146 in the tenth sub-modulation structure 1010 is located and the plane where the substrate 10 is located. That is, the ninth sub-interface 145 and the tenth sub-interface 146 have the same degree of inclination, and the modulation degree of the light incident on them at a smaller angle is the same. This makes the light output brightness of the thirteenth side 713 corresponding to the ninth light-emitting element 119 at a normal or near normal angle and the light output brightness of the fourteenth side 714 of the tenth light-emitting element 1110 at a normal or near normal angle. In this way, the light output attenuation of different colors of light can be balanced, thereby converging the view character coordinate offset trajectory, improving color conversion defects, and achieving the purpose of display white balance.

[0122] As another possible implementation method, such as Figure 27 and Figure 28 As shown, the light-emitting element 11 includes an eleventh light-emitting element 1111 and a twelfth light-emitting element 1112, and the plurality of second modulation structures 132 include an eleventh sub-modulation structure 1011 and a twelfth sub-modulation structure 1012; along the first direction Y, the eleventh sub-modulation structure 1011 at least partially overlaps with the eleventh light-emitting element 1111, and the twelfth sub-modulation structure 1012 at least partially overlaps with the twelfth light-emitting element 1112; the pixel opening region of the eleventh light-emitting element 1111 includes a fifteenth side 715, and the second interface 15 in the eleventh sub-modulation structure 1011 includes an eleventh sub-interface 155, the orthographic projection of the eleventh sub-interface 155 onto the plane of the substrate 10 is located at... The fifteenth side 715 is on one side of the orthogonal projection of the plane where the substrate 10 is located; the pixel opening region of the twelfth light-emitting element 1112 includes the sixteenth side 716, the second interface 15 in the twelfth sub-modulation structure 1012 includes the twelfth sub-interface 156, the orthogonal projection of the twelfth sub-interface 156 on the plane where the substrate 10 is located is on one side of the orthogonal projection of the sixteenth side 716 on the plane where the substrate 10 is located; the length of the fifteenth side 715 is the same as the length of the sixteenth side 716, the acute angle θ23 between the plane where the eleventh sub-interface 155 is located and the plane where the substrate 10 is located is equal to the acute angle θ24 between the plane where the twelfth sub-interface 156 is located and the plane where the substrate 10 is located.

[0123] The light emitted by the eleventh light-emitting element 1111 can be the same as or different from the light emitted by the first color light mentioned above; the light emitted by the twelfth light-emitting element 1112 can be the same as or different from the light emitted by the second color light mentioned above; the light emitted by the eleventh light-emitting element 1111 and the twelfth light-emitting element 1112 are different. The eleventh light-emitting element 1111 and the ninth light-emitting element 119 can be the same light-emitting element 11 or different light-emitting elements; the twelfth light-emitting element 1112 and the tenth light-emitting element 1110 can be the same light-emitting element 11 or different light-emitting elements. Figure 27 and Figure 28 The following description uses the example of the eleventh light-emitting element 1111 and the ninth light-emitting element 119 being the same light-emitting element 11, and the twelfth light-emitting element 1112 and the tenth light-emitting element 1110 being the same light-emitting element 11. The color selection of the eleventh light-emitting element 1111 and the twelfth light-emitting element 1112 can be set according to actual design requirements, and this application embodiment does not impose specific limitations.

[0124] When the length of the fifteenth side 715 of the pixel opening region corresponding to the eleventh light-emitting element 1111 is the same as the length of the sixteenth side 716 of the pixel opening region corresponding to the twelfth light-emitting element 1112, for the second modulation portions 1322 in different second modulation structures 132, the acute angle θ23 between the plane of the eleventh sub-interface 155 in the eleventh sub-modulation structure 1011 and the plane of the substrate 10 is set to be equal to the acute angle θ24 between the plane of the twelfth sub-interface 156 in the twelfth sub-modulation structure 1012 and the plane of the substrate 10. The eleventh sub-interface 155 and the twelfth sub-interface 156 have the same degree of tilt, and the modulation degree of the light incident on them at a large angle is the same. This makes the light output at the fifteenth side 715 corresponding to the eleventh sub-interface 155 and the sixteenth side 716 corresponding to the twelfth sub-interface 156 the same or similar. This balances the difference in light output between the eleventh light-emitting element 1111 and the twelfth light-emitting element 1112, ensures the color mixing effect of the eleventh color light and the twelfth color light, ensures that the display panel will not have a color deviation problem, and ensures the overall display effect of the display panel.

[0125] As another possible implementation method Figure 29 This is a partial structural diagram of another display panel provided in an embodiment of this application. Figure 30 for Figure 29 A schematic diagram of a cross-sectional structure along section line KK', such as... Figure 29 and Figure 30As shown, the light-emitting element 11 includes a thirteenth light-emitting element 1113 and a fourteenth light-emitting element 1114, and the plurality of second modulation structures 132 include a thirteenth sub-modulation structure 1013 and a fourteenth sub-modulation structure 1014; along the first direction Y, the first modulation portion 1321 of the thirteenth sub-modulation structure 1013 covers the thirteenth light-emitting element 1113, and the first modulation portion 1321 of the fourteenth sub-modulation structure 1014 covers the fourteenth light-emitting element 1114; the pixel opening region of the thirteenth light-emitting element 1113 includes a seventeenth side 717; the first modulation portion 1321 of the thirteenth sub-modulation structure 1013 includes a seventh surface 67 on the side away from the substrate 10, and the seventh surface 67 includes an eighteenth side 718, along the parallel to the substrate 10. In the direction X of the plane where the base 10 is located, the eighteenth side 718 is located on one side of the seventeenth side 717; the pixel opening region of the fourteenth light-emitting element 1114 includes the nineteenth side 719; the first modulation portion 1321 in the fourteenth sub-modulation structure 1014 includes an eighth surface 68 on the side away from the substrate 10, the eighth surface 68 includes a twentieth side 720, and in the direction X parallel to the plane where the substrate 10 is located, the twentieth side 720 is located on one side of the nineteenth side 719; the length of the seventeenth side 717 is equal to the length of the nineteenth side 719, and in the direction X parallel to the plane where the substrate 10 is located, the minimum distance L61 between the eighteenth side 718 and the seventeenth side 717 is equal to the minimum distance L62 between the twentieth side 720 and the nineteenth side 719.

[0126] The light emitted by the thirteenth light-emitting element 1113 may be the same as or different from the light emitted by the first color light mentioned above; the light emitted by the fourteenth light-emitting element 1114 may be the same as or different from the light emitted by the second color light mentioned above; the light emitted by the thirteenth light-emitting element 1113 may be different from the light emitted by the fourteenth light-emitting element 1114. The color selection of the thirteenth light-emitting element 1113 and the fourteenth light-emitting element 1114 can be set according to actual design requirements, and this embodiment does not impose specific limitations.

[0127] When the length of the seventeenth side 717 of the pixel opening region corresponding to the thirteenth light-emitting element 1113 is the same as the length of the nineteenth side 719 of the pixel opening region corresponding to the fourteenth light-emitting element 1114, for the first modulation portion 1321 in different second modulation structures 132, the minimum distance L61 between the eighteenth side 718 of the seventh surface 67 of the first modulation portion 1321 in the thirteenth sub-modulation structure 1013 and the seventeenth side 717 of the pixel opening region of the thirteenth light-emitting element 1113 is equal to the distance between the twentieth side 720 of the eighth surface 68 of the first modulation portion 1321 in the fourteenth sub-modulation structure 1014 and the nineteenth side 719 of the pixel opening region of the fourteenth light-emitting element 1114. The minimum distance L62, which is the distance between the first modulation portion 1321 in the thirteenth sub-modulation structure 1013 and the pixel opening area of ​​the thirteenth light-emitting element 1113, is the same as the distance between the first modulation portion 1321 in the fourteenth sub-modulation structure 1014 and the pixel opening area of ​​the fourteenth light-emitting element 1114. This balances the difference in modulation amount for light at smaller viewing angles, so that the light output brightness of the seventeenth side 717 of the thirteenth light-emitting element 1113 at a normal or near-normal viewing angle is the same as the light output brightness of the nineteenth side 719 of the fourteenth light-emitting element 1114 at a normal or near-normal viewing angle. This can balance the light output attenuation of different colors of light, realize the goal of narrowing the view character coordinate offset trajectory, improving color conversion defects, and achieving display white balance.

[0128] As another possible implementation method, such as Figure 29 and Figure 30The light-emitting element 11 includes a fifteenth light-emitting element 1115 and a sixteenth light-emitting element 1116. Multiple second modulation structures 132 include a fifteenth sub-modulation structure 1015 and a sixteenth sub-modulation structure 1016. Along the first direction Y, a first modulation portion 1321 in the fifteenth sub-modulation structure 1015 covers the fifteenth light-emitting element 1115, and a first modulation portion 1321 in the sixteenth sub-modulation structure 1016 covers the sixteenth light-emitting element 1116. The pixel opening region of the fifteenth light-emitting element 1115 includes a twenty-first side 721. The second modulation portion 1322 in the fifteenth sub-modulation structure 1015 includes a ninth surface 69 on the side away from the substrate 10, and the ninth surface 69 includes a twenty-second side 722 along the plane parallel to the substrate 10. In the direction X, the twenty-second side 722 is located on one side of the twenty-first side 721; the pixel opening region of the sixteenth light-emitting element 1116 includes the twenty-third side 723; the second modulation portion 1322 in the sixteenth sub-modulation structure 1016 includes the tenth surface 610 on the side away from the substrate 10, the tenth surface 610 includes the twenty-fourth side 724, and in the direction X parallel to the plane where the substrate 10 is located, the twenty-fourth side 724 is located on one side of the twenty-third side 723; the length of the twenty-first side 721 is equal to the length of the twenty-third side 723, and in the direction X parallel to the plane where the substrate 10 is located, the minimum distance L63 between the twenty-second side 722 and the twenty-first side 721 is equal to the minimum distance L64 between the twenty-fourth side 724 and the twenty-third side 723.

[0129] The light emitted by the fifteenth light-emitting element 1115 is different from that emitted by the sixteenth light-emitting element 1116. The fifteenth light-emitting element 1115 and the thirteenth light-emitting element 1113 mentioned above can be the same light-emitting element 11 or different light-emitting elements. Similarly, the sixteenth light-emitting element 1116 and the fourteenth light-emitting element 1114 mentioned above can be the same light-emitting element 11 or different light-emitting elements. Figure 29 and Figure 30 The following description uses the example of the fifteenth light-emitting element 1115 and the thirteenth light-emitting element 1113 being the same light-emitting element 11, and the sixteenth light-emitting element 1116 and the fourteenth light-emitting element 1114 being the same light-emitting element 11. Furthermore, the color selection of the fifteenth light-emitting element 1115 and the sixteenth light-emitting element 1116 can be set according to actual design requirements, and this embodiment does not impose specific limitations.

[0130] When the length of the twenty-first side 721 of the pixel opening region corresponding to the fifteenth light-emitting element 1115 is the same as the length of the twenty-third side 723 of the pixel opening region corresponding to the sixteenth light-emitting element 1116, for the second modulation divisions 1322 in different second modulation structures 132, the minimum distance L63 between the twenty-second side 722 of the ninth surface 69 of the second modulation division 1322 in the fifteenth sub-modulation structure 1015 and the twenty-first side 721 of the pixel opening region of the fifteenth light-emitting element 1115 is equal to the distance between the twenty-fourth side 724 of the tenth surface 610 of the second modulation division 1322 in the sixteenth sub-modulation structure 1016 and the pixel opening region of the sixteenth light-emitting element 1116. The minimum distance L64 between the twenty-third side 723 of the domain, which is the distance between the second modulation portion 1322 in the fifteenth sub-modulation structure 1015 and the pixel opening area of ​​the fifteenth light-emitting element 1115, is the same as the distance between the second modulation portion 1322 in the sixteenth sub-modulation structure 1016 and the pixel opening area of ​​the sixteenth light-emitting element 1116. This balances the difference in modulation amount for light with a larger viewing angle, making the light output at the twenty-first side 721 corresponding to the fifteenth light-emitting element 1115 the same or similar to the light output at the nineteenth side 719 of the fourteenth light-emitting element 1114. This ensures the color mixing effect of the thirteenth color light and the fourteenth color light, ensures that the display panel will not have a color shift problem, and ensures the overall display effect of the display panel.

[0131] Based on the same inventive concept, this application also provides a display device. Figure 31 This is a schematic diagram of the structure of a display device provided in an embodiment of this application, such as... Figure 31 As shown, the display device 200 includes the display panel 100 described in the above embodiments.

[0132] It should be noted that since the display device provided in this embodiment has the same or corresponding beneficial effects as the display panel in the above embodiments, it will not be described in detail here. The display device 200 provided in this application embodiment can be Figure 31 The mobile phone shown can also be any electronic product with display function, including but not limited to the following categories: television, laptop, desktop monitor, tablet, digital camera, smart bracelet, smart glasses, in-vehicle display, medical device, industrial control equipment, touch interactive terminal, etc. This application embodiment does not make any special limitation in this regard.

[0133] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

[0134] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A display panel, characterized in that, The device includes a substrate, a light-emitting element, and an optical modulation structure stacked in a first direction. Along the first direction, the light-emitting element is located on one side of the substrate, and the optical modulation structure is located on the side of the light-emitting element away from the substrate. The first direction intersects with the plane containing the substrate. The optical modulation structure includes a first modulation structure and a plurality of second modulation structures, wherein the refractive index of the first modulation structure is less than the refractive index of the second modulation structure. The second modulation structure includes a first modulation portion and a second modulation portion stacked in the first direction. Along the first direction, both the first modulation portion and the second modulation portion overlap at least partially with the light-emitting element. The first modulation portion and the first modulation structure have a first interface, and the second modulation portion and the first modulation structure have a second interface. The orthographic projection of the second interface onto the plane where the substrate is located at least partially surrounds the orthographic projection of the first interface onto the plane where the substrate is located.

2. The display panel according to claim 1, characterized in that, The first modulation portion includes a first bottom surface and a first top surface, and the first interface connects the first bottom surface and the first top surface; the second modulation portion includes a second bottom surface and a second top surface, and the second interface connects the second bottom surface and the second top surface; The angle between the first interface and the first bottom surface is acute, and the angle between the first interface and the first top surface is obtuse; the angle between the second interface and the second bottom surface is acute, and the angle between the second interface and the second top surface is obtuse.

3. The display panel according to claim 1, characterized in that, The first modulation section includes a first central section and a first functional section, the first functional section surrounds the first central section, and the first interface is the interface between the first functional section and the first modulation structure; the second modulation section includes a second central section and a second functional section, the second functional section surrounds the second central section, and the second interface is the interface between the second functional section and the first modulation structure. The light-emitting element includes a first light-emitting element and a second light-emitting element; The plurality of second modulation structures include a first sub-modulation structure and a second sub-modulation structure, wherein along the first direction, the first sub-modulation structure at least partially overlaps with the first light-emitting element, and the second sub-modulation structure at least partially overlaps with the second light-emitting element; In the first sub-modulation structure, along the direction from the first functional part to the first central part, the projection length of the first interface on the plane where the substrate is located is L11; along the direction from the second functional part to the second central part, the projection length of the second interface on the plane where the substrate is located is L12. In the second sub-modulation structure, along the direction from the first functional part to the first central part, the projection length of the first interface on the plane where the substrate is located is L21; along the direction from the second functional part to the second central part, the projection length of the second interface on the plane where the substrate is located is L22. The pixel aperture area of ​​the first light-emitting element is different from that of the second light-emitting element, and L11≠L21, and / or, L12≠L22.

4. The display panel according to claim 3, characterized in that, The thickness of the first modulation portion in the first sub-modulation structure in the first direction is different from the thickness of the first modulation portion in the second sub-modulation structure in the first direction; And / or, the thickness of the second modulation portion in the first sub-modulation structure in the first direction is different from the thickness of the second modulation portion in the second sub-modulation structure in the first direction.

5. The display panel according to claim 4, characterized in that, The pixel aperture area of ​​the first light-emitting element is larger than the pixel aperture area of ​​the second light-emitting element; The thickness of the first modulation portion in the first sub-modulation structure in the first direction is greater than the thickness of the first modulation portion in the second sub-modulation structure in the first direction; And / or, the thickness of the second modulation portion in the first sub-modulation structure in the first direction is less than the thickness of the second modulation portion in the second sub-modulation structure in the first direction.

6. The display panel according to claim 3, characterized in that, The acute angle between the plane containing the first interface in the first sub-modulation structure and the plane containing the substrate is different from the acute angle between the plane containing the first interface and the plane containing the substrate in the second sub-modulation structure; And / or, the acute angle between the plane containing the second interface in the first sub-modulation structure and the plane containing the substrate is different from the acute angle between the plane containing the second interface in the second sub-modulation structure and the plane containing the substrate.

7. The display panel according to claim 6, characterized in that, The pixel aperture area of ​​the first light-emitting element is larger than the pixel aperture area of ​​the second light-emitting element; The acute angle between the plane containing the first interface in the first sub-modulation structure and the plane containing the substrate is greater than the acute angle between the plane containing the first interface in the second sub-modulation structure and the plane containing the substrate. And / or, the acute angle between the plane containing the second interface in the first sub-modulation structure and the plane containing the substrate is smaller than the acute angle between the plane containing the second interface in the second sub-modulation structure and the plane containing the substrate.

8. The display panel according to claim 1, characterized in that, The first modulation section includes a first central section and a first functional section, the first functional section surrounds the first central section, and the first interface is the interface between the first functional section and the first modulation structure; the second modulation section includes a second central section and a second functional section, the second functional section surrounds the second central section, and the second interface is the interface between the second functional section and the first modulation structure. The light-emitting element includes a third light-emitting element and a fourth light-emitting element; The plurality of second modulation structures include a third sub-modulation structure and a fourth sub-modulation structure; in the third sub-modulation structure, along the first direction, both the first modulation portion and the second modulation portion cover the third light-emitting element; in the fourth sub-modulation structure, along the first direction, both the first modulation portion and the second modulation portion cover the fourth light-emitting element; The first modulation portion of the third sub-modulation structure includes a first surface away from the substrate, and the second modulation portion of the third sub-modulation structure includes a second surface away from the substrate; the first modulation portion of the fourth sub-modulation structure includes a third surface away from the substrate, and the second modulation portion of the fourth sub-modulation structure includes a fourth surface away from the substrate. Along a direction parallel to the plane where the substrate is located, the minimum distance between the first surface and the pixel opening region of the third light-emitting element is L31, the minimum distance between the second surface and the pixel opening region of the third light-emitting element is L32, the minimum distance between the third surface and the pixel opening region of the fourth light-emitting element is L41, and the minimum distance between the fourth surface and the pixel opening region of the fourth light-emitting element is L42. The pixel aperture area of ​​the third light-emitting element is different from that of the fourth light-emitting element. L31≠L41, and / or, L32≠L42.

9. The display panel according to claim 8, characterized in that, The pixel aperture area of ​​the third light-emitting element is larger than that of the fourth light-emitting element; L31 < L41, and / or, L32 < L42.

10. The display panel according to claim 4, characterized in that, The first functional unit includes a first sub-functional unit and a second sub-functional unit, wherein the direction of the first sub-functional unit pointing towards the first central unit intersects the direction of the second sub-functional unit pointing towards the first central unit; The maximum thickness of the first sub-functional part is equal to the maximum thickness of the second sub-functional part.

11. The display panel according to claim 4, characterized in that, The second functional unit includes a third sub-functional unit and a fourth sub-functional unit, wherein the direction of the third sub-functional unit pointing towards the second central unit intersects the direction of the fourth sub-functional unit pointing towards the second central unit; The maximum thickness of the third sub-functional part is equal to the maximum thickness of the fourth sub-functional part.

12. The display panel according to claim 6, characterized in that, The first functional unit includes a fifth sub-functional unit and a sixth sub-functional unit, wherein the direction of the fifth sub-functional unit pointing towards the first central unit intersects the direction of the sixth sub-functional unit pointing towards the first central unit; The first interface includes a first sub-interface located in the fifth sub-functional unit and a second sub-interface located in the sixth sub-functional unit; the acute angle between the plane where the first sub-interface is located and the plane where the substrate is located is equal to the acute angle between the plane where the second sub-interface is located and the plane where the substrate is located.

13. The display panel according to claim 6, characterized in that, The second functional unit includes a seventh sub-functional unit and an eighth sub-functional unit, wherein the direction of the seventh sub-functional unit pointing towards the second central unit intersects the direction of the eighth sub-functional unit pointing towards the second central unit; The second interface includes a third sub-interface located in the seventh sub-functional unit and a fourth sub-interface located in the eighth sub-functional unit; the acute angle between the plane of the third sub-interface and the plane of the substrate is equal to the acute angle between the plane of the fourth sub-interface and the plane of the substrate.

14. The display panel according to claim 8, characterized in that, The first functional unit includes a ninth sub-functional unit and a tenth sub-functional unit, wherein the direction of the ninth sub-functional unit pointing towards the first central unit intersects the direction of the tenth sub-functional unit pointing towards the first central unit; Along a direction parallel to the plane of the substrate, the minimum distance between the ninth sub-functional unit and the pixel opening region of the light-emitting element it covers is d1, and the minimum distance between the tenth sub-functional unit and the pixel opening region of the light-emitting element it covers is d2. Where d1 = d2.

15. The display panel according to claim 8, characterized in that, The second functional unit includes an eleventh sub-functional unit and a twelfth sub-functional unit, wherein the direction of the eleventh sub-functional unit pointing towards the second central unit intersects the direction of the twelfth sub-functional unit pointing towards the second central unit; Along a direction parallel to the plane of the substrate, the minimum distance between the eleventh sub-functional unit and the pixel opening area of ​​the light-emitting element it covers is d3, and the minimum distance between the twelfth sub-functional unit and the pixel opening area of ​​the light-emitting element it covers is d4. Where d3 = d4.

16. The display panel according to claim 1, characterized in that, The light-emitting element includes a fifth light-emitting element, and the plurality of second modulation structures include a fifth sub-modulation structure. Along the first direction, the fifth sub-modulation structure at least partially overlaps with the fifth light-emitting element. The pixel opening region of the fifth light-emitting element includes a first side and a second side; The first interface in the fifth sub-modulation structure includes a fifth sub-interface and a sixth sub-interface. The orthographic projection of the fifth sub-interface on the plane where the substrate is located is located on one side of the orthographic projection of the first side on the plane where the substrate is located. The orthographic projection of the sixth sub-interface on the plane where the substrate is located is located on one side of the orthographic projection of the second side on the plane where the substrate is located. The length of the first side is greater than the length of the second side; The acute angle between the plane containing the fifth sub-interface and the plane containing the substrate is greater than the acute angle between the plane containing the sixth sub-interface and the plane containing the substrate.

17. The display panel according to claim 1, characterized in that, The light-emitting element includes a sixth light-emitting element, and the plurality of second modulation structures include a sixth sub-modulation structure. Along the first direction, the sixth sub-modulation structure at least partially overlaps with the sixth light-emitting element. The pixel opening region of the sixth light-emitting element includes the third side and the fourth side; The second interface in the sixth sub-modulation structure includes a seventh sub-interface and an eighth sub-interface. The orthographic projection of the seventh sub-interface on the plane where the substrate is located is located on one side of the orthographic projection of the third side on the plane where the substrate is located. The orthographic projection of the eighth sub-interface on the plane where the substrate is located is located on one side of the orthographic projection of the fourth side on the plane where the substrate is located. The length of the third side is greater than the length of the fourth side; The acute angle between the plane containing the seventh sub-interface and the plane containing the substrate is smaller than the acute angle between the plane containing the eighth sub-interface and the plane containing the substrate.

18. The display panel according to claim 1, characterized in that, The light-emitting element includes a seventh light-emitting element, and the plurality of second modulation structures include a seventh sub-modulation structure; along the first direction, the first modulation portion of the seventh sub-modulation structure covers the seventh light-emitting element; The pixel opening region of the seventh light-emitting element includes the fifth side and the sixth side; The first modulation portion in the seventh sub-modulation structure includes a fifth surface on the side away from the substrate. The fifth surface includes a seventh side and an eighth side. Along a direction parallel to the plane where the substrate is located, the seventh side is located on one side of the fifth side, and the eighth side is located on one side of the sixth side. The length of the fifth side is greater than the length of the sixth side. Along a direction parallel to the plane where the substrate is located, the minimum distance between the seventh side and the fifth side is less than the minimum distance between the eighth side and the sixth side.

19. The display panel according to claim 1, characterized in that, The light-emitting element includes an eighth light-emitting element, and the plurality of second modulation structures include an eighth sub-modulation structure; along the first direction, the second modulation portion of the eighth sub-modulation structure covers the eighth light-emitting element; The pixel opening region of the eighth light-emitting element includes the ninth side and the tenth side; The second modulation portion in the eighth sub-modulation structure includes a sixth surface on the side away from the substrate. The sixth surface includes an eleventh side and a twelfth side, and is located in a direction parallel to the plane where the substrate is located. The eleventh side is located on one side of the ninth side, and the twelfth side is located on one side of the tenth side. The length of the ninth side is greater than the length of the tenth side. Along a direction parallel to the plane where the substrate is located, the minimum distance between the eleventh side and the ninth side is less than the minimum distance between the twelfth side and the tenth side.

20. The display panel according to claim 1, characterized in that, The light-emitting element includes a ninth light-emitting element and a tenth light-emitting element, and the plurality of second modulation structures include a ninth sub-modulation structure and a tenth sub-modulation structure; along the first direction, the ninth sub-modulation structure at least partially overlaps with the ninth light-emitting element, and the tenth sub-modulation structure at least partially overlaps with the tenth light-emitting element; The pixel opening region of the ninth light-emitting element includes a thirteenth side, and the first interface in the ninth sub-modulation structure includes a ninth sub-interface. The orthographic projection of the ninth sub-interface onto the plane where the substrate is located is located on one side of the orthographic projection of the thirteenth side onto the plane where the substrate is located. The pixel opening region of the tenth light-emitting element includes a fourteenth side, and the first interface in the tenth sub-modulation structure includes a tenth sub-interface. The orthographic projection of the tenth sub-interface onto the plane where the substrate is located is located on one side of the orthographic projection of the fourteenth side onto the plane where the substrate is located. The length of the thirteenth side is the same as the length of the fourteenth side, and the acute angle between the plane where the ninth sub-interface is located and the plane where the substrate is located is equal to the acute angle between the plane where the tenth sub-interface is located and the plane where the substrate is located.

21. The display panel according to claim 1, characterized in that, The light-emitting element includes an eleventh light-emitting element and a twelfth light-emitting element, and the plurality of second modulation structures include an eleventh sub-modulation structure and a twelfth sub-modulation structure; along the first direction, the eleventh sub-modulation structure at least partially overlaps with the eleventh light-emitting element, and the twelfth sub-modulation structure at least partially overlaps with the twelfth light-emitting element; The pixel opening region of the eleventh light-emitting element includes the fifteenth side, and the second interface in the eleventh sub-modulation structure includes the eleventh sub-interface. The orthographic projection of the eleventh sub-interface onto the plane where the substrate is located is located on one side of the orthographic projection of the fifteenth side onto the plane where the substrate is located. The pixel opening region of the twelfth light-emitting element includes the sixteenth side, and the second interface in the twelfth sub-modulation structure includes the twelfth sub-interface. The orthographic projection of the twelfth sub-interface onto the plane where the substrate is located is located on one side of the orthographic projection of the sixteenth side onto the plane where the substrate is located. The length of the fifteenth side is the same as the length of the sixteenth side, and the acute angle between the plane where the eleventh sub-interface is located and the plane where the substrate is located is equal to the acute angle between the plane where the twelfth sub-interface is located and the plane where the substrate is located.

22. The display panel according to claim 1, characterized in that, The light-emitting element includes a thirteenth light-emitting element and a fourteenth light-emitting element, and the plurality of second modulation structures include a thirteenth sub-modulation structure and a fourteenth sub-modulation structure; along the first direction, the first modulation portion of the thirteenth sub-modulation structure covers the thirteenth light-emitting element, and the first modulation portion of the fourteenth sub-modulation structure covers the fourteenth light-emitting element; The pixel opening region of the thirteenth light-emitting element includes a seventeenth side; the first modulation portion in the thirteenth sub-modulation structure includes a seventh surface away from the substrate, the seventh surface includes an eighteenth side, and along a direction parallel to the plane where the substrate is located, the eighteenth side is located on one side of the seventeenth side; The pixel opening region of the fourteenth light-emitting element includes a nineteenth side; the first modulation portion in the fourteenth sub-modulation structure includes an eighth surface away from the substrate, the eighth surface includes a twentieth side, and along a direction parallel to the plane where the substrate is located, the twentieth side is located on one side of the nineteenth side; The length of the seventeenth side is equal to the length of the nineteenth side. Along the direction parallel to the plane where the substrate is located, the minimum distance between the eighteenth side and the seventeenth side is equal to the minimum distance between the twentieth side and the nineteenth side.

23. The display panel according to claim 1, characterized in that, The light-emitting element includes a fifteenth light-emitting element and a sixteenth light-emitting element, and the plurality of second modulation structures include a fifteenth sub-modulation structure and a sixteenth sub-modulation structure; along the first direction, the first modulation portion of the fifteenth sub-modulation structure covers the fifteenth light-emitting element, and the first modulation portion of the sixteenth sub-modulation structure covers the sixteenth light-emitting element; The pixel opening region of the fifteenth light-emitting element includes a twenty-first side; the second modulation portion in the fifteenth sub-modulation structure includes a ninth surface away from the substrate, the ninth surface including a twenty-second side, and the twenty-second side is located on one side of the twenty-first side along a direction parallel to the plane of the substrate. The pixel opening region of the sixteenth light-emitting element includes a twenty-third side; the second modulation portion in the sixteenth sub-modulation structure includes a tenth surface away from the substrate, the tenth surface includes a twenty-fourth side, and along a direction parallel to the plane where the substrate is located, the twenty-fourth side is located on one side of the twenty-third side; The length of the eleventh side is equal to the length of the thirteenth side. Along the direction parallel to the plane where the substrate is located, the minimum distance between the twelfth side and the eleventh side is equal to the minimum distance between the twelfth side and the thirteenth side.

24. The display panel according to claim 1, characterized in that, Along a direction parallel to the plane where the substrate is located, the first interface is located on at least one side of the first modulation portion, and the second interface is located on at least one side of the second modulation portion.

25. The display panel according to claim 3, characterized in that, The first light-emitting element includes a blue light-emitting element, and the second light-emitting element includes a red light-emitting element and / or a green light-emitting element; Alternatively, the first light-emitting element may include a blue light-emitting element and / or a red light-emitting element, and the second light-emitting element may include a green light-emitting element.

26. The display panel according to claim 1, characterized in that, Along the first direction, the orthographic projection of the second modulation portion onto the plane where the substrate is located overlaps the orthographic projection of the first modulation portion onto the plane where the substrate is located; Along the first direction, the first modulation portion is located on the side of the second modulation portion away from the substrate.

27. The display panel according to claim 1, characterized in that, Along the first direction, the orthographic projection of the second modulation portion onto the plane where the substrate is located overlaps the orthographic projection of the first modulation portion onto the plane where the substrate is located; Along the first direction, the first modulation portion is located on the side of the second modulation portion closer to the substrate.

28. The display panel according to claim 26 or 27, characterized in that, The first modulation section is in contact with the second modulation section.

29. A display device, characterized in that, Includes the display panel as described in any one of claims 1-28.

Images