A display device

Abstract

Embodiments of the present application disclose a display device, which comprises a plurality of pixel repeating units and pixel circuits arranged in an array; each pixel repeating unit comprises at least two sub-pixels of different colors, and any sub-pixel comprises at least one light emitting element; in one pixel repeating unit, the sub-pixels comprise a first sub-pixel, the light emitting elements comprise a first light emitting element, the first sub-pixel comprises m first light emitting elements, and m is greater than or equal to 2; the pixel circuits comprise a first pixel circuit; the m first light emitting elements corresponding to the first sub-pixel are electrically connected to the same first pixel circuit. The technical scheme of the embodiments of the present application can optimize the pixel arrangement, improve the area utilization, optimize the area ratio of different sub-pixels, further balance the current density, and improve the service life. When the display device comprises a microlens, thanks to the optimization of the pixel arrangement, the preparation difficulty of the microlens can be reduced, the light extraction efficiency can be further improved, and the power consumption loss can be reduced.

Description

Technical Field

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

[0002] For OLED (Organic Light-Emitting Diode) display devices, due to the significant differences in efficiency and lifespan of OLED materials of different colors, existing technologies balance panel brightness performance, overall lifespan, and energy consumption by designing OLED sub-pixels of different colors to have different sizes. For example, in OLED display devices that include red, green, and blue sub-pixels, blue OLED materials have low efficiency and short lifespan. Existing technologies reduce current density by increasing the size of blue sub-pixels, thereby slowing down the degradation of blue materials and extending the overall lifespan of the panel.

[0003] However, when subpixels of different colors have different sizes, the gaps between different subpixels are relatively large due to the limitations of the panel's size / shape, resulting in low area utilization and suboptimal pixel arrangement. For example, Figure 1 This is a top view schematic diagram of an existing display device, such as... Figure 1 As shown, red sub-pixel 03, green sub-pixel 02, and blue sub-pixel 01 have different sizes, and there is a large gap between red sub-pixel 03 and blue sub-pixel 01, resulting in wasted space. Summary of the Invention

[0004] This invention provides a display device to optimize pixel arrangement and improve area utilization.

[0005] The display device provided by the present invention includes: Multiple pixel repeating units arranged in an array; each pixel repeating unit includes at least two different colors of sub-pixels, and each sub-pixel includes at least one light-emitting element; In a pixel repetition unit, the sub-pixel includes the first sub-pixel, the light-emitting element includes the first light-emitting element, and the first sub-pixel includes m first light-emitting elements, where m≥2; Pixel circuit; the pixel circuit includes a first pixel circuit; m first light-emitting elements corresponding to the first sub-pixel are electrically connected to the same first pixel circuit.

[0006] Optionally, the display device includes: Pixel circuit setting layer; the pixel circuit is located in the pixel circuit setting layer. The first insulating layer is located on one side of the pixel circuit setting layer; The light-emitting element layer is located on the side of the first insulating layer away from the pixel circuit setting layer; the light-emitting element is located in the light-emitting element layer. The first light-emitting element includes a first anode structure; in the first sub-pixel, m first anode structures corresponding to m first light-emitting elements are electrically connected; a first through hole is provided in the first insulating layer, and at least one of the m first anode structures is electrically connected to the first pixel circuit through the first through hole.

[0007] Optionally, the first anode structure includes a first reflective anode, a second insulating layer, and a first transparent anode stacked sequentially, wherein the first transparent anode is located on the side of the first reflective anode away from the pixel circuit layer; the first transparent anode covers the second insulating layer and is in direct contact with the sidewall of the first reflective anode; The display device also includes a first connecting portion; the first connecting portion is located between two adjacent first reflective anodes, and is integrally formed with the first transparent anode and connected to the two adjacent first transparent anodes.

[0008] Optionally, the first anode structure includes a first reflective anode, a second insulating layer, and a first transparent anode stacked sequentially, wherein the first transparent anode is located on the side of the first reflective anode away from the pixel circuit layer; The display device further includes a second connecting portion, a third connecting portion, and a fourth connecting portion; the second connecting portion is located between two adjacent first reflective anodes, and is integrally formed with the first reflective anodes and connected to the two adjacent first reflective anodes; the third connecting portion is located between two adjacent second insulating layers, and is integrally formed with the second insulating layer and connected to the two adjacent second insulating layers; the fourth connecting portion is located between two adjacent first transparent anodes, and is integrally formed with the first transparent anode and connected to the two adjacent first transparent anodes. In the edge region of the first sub-pixel, the first transparent anode is in direct contact with the sidewall of the first reflective anode.

[0009] Optionally, the first anode structure includes a first reflective anode, a second insulating layer, and a first transparent anode stacked sequentially, wherein the first transparent anode is located on the side of the first reflective anode away from the pixel circuit layer; The display device further includes a second connecting portion and a fifth connecting portion; the second connecting portion is located between two adjacent first reflective anodes, and is integrally formed with the first reflective anodes and connected to the two adjacent first reflective anodes; the fifth connecting portion is located between two adjacent second insulating layers, and is integrally formed with the first transparent anodes and connected to the two adjacent first transparent anodes; the fifth connecting portion is in contact with the second connecting portion.

[0010] Optionally, the display device further includes a pixel defining layer, which is located on the side of the film layer where the first anode structure is located away from the pixel circuit setting layer; the pixel defining layer defines a light-emitting opening; the light-emitting opening includes a first light-emitting opening, which is configured to correspond one-to-one with the first anode structure, and at least a portion of the first anode structure is located within the first light-emitting opening; The first light-emitting element also includes a first light-emitting functional layer, at least a portion of which is located within the first light-emitting opening.

[0011] Optionally, the pixel defining layer includes a first defining portion and a second defining portion. The first defining portion is located between adjacent light-emitting elements and fills the gap between adjacent anode structures. The second defining portion is located on the side of the first defining portion away from the pixel circuit setting layer. The second defining portion includes a first defining sub-part and a second defining sub-part. The second defining sub-part is located on the side of the first defining sub-part away from the pixel circuit setting layer. The orthographic projection of the first defining sub-part on the pixel circuit setting layer is located inside the orthographic projection of the second defining sub-part on the pixel circuit setting layer.

[0012] Optionally, the pixel defining layer further includes a third defining portion disposed between the first defining portion and the second defining portion, the sidewall of the third defining portion including at least one step; the third defining portion includes a first surface and a second surface, the second surface being located on the side of the first surface away from the first defining portion, and the orthographic projection of the first defining portion on the pixel circuit setting layer being located inside the orthographic projection of the second surface on the pixel circuit setting layer.

[0013] Optionally, the pixel repeating unit further includes a second sub-pixel and a third sub-pixel, and the light-emitting element further includes a second light-emitting element and a third light-emitting element. The second sub-pixel includes n second light-emitting elements, and the third sub-pixel includes k third light-emitting elements, where n ≤ k ≤ m, m > n, and n ≥ 1. The pixel circuit also includes a second pixel circuit and a third pixel circuit. The n second light-emitting elements corresponding to the second sub-pixel are electrically connected to the same second pixel circuit; the k third light-emitting elements corresponding to the third sub-pixel are electrically connected to the same third pixel circuit.

[0014] Optionally, the first sub-pixel is a blue sub-pixel, the second sub-pixel is a green sub-pixel, and the third sub-pixel is a red sub-pixel.

[0015] Optionally, the pixel repetition unit includes two first sub-pixels, two third sub-pixels, and four second sub-pixels; In the display device: There exists a first sub-pixel located between four second sub-pixels; there exists a third sub-pixel located between four second sub-pixels; there exists a second sub-pixel located between two first sub-pixels and two third sub-pixels simultaneously. The center lines of the four second sub-pixels form a first quadrilateral, and the center lines of the two first sub-pixels and the two third sub-pixels form a second quadrilateral.

[0016] Optionally, the first sub-pixel includes four first light-emitting elements, the second sub-pixel includes one second light-emitting element, and the third sub-pixel includes two third light-emitting elements; In the display device, a second light-emitting element is located between two third light-emitting elements and four first light-emitting elements, and the center line connecting the two third light-emitting elements and the four first light-emitting elements forms a first hexagon; The center lines connecting the four first light-emitting elements corresponding to the first sub-pixel form a rhombus; the first diagonal of the rhombus is parallel to the first direction, the second diagonal of the rhombus is parallel to the second direction, and the first and second directions are orthogonal; the two third light-emitting elements corresponding to the third sub-pixel form a first line segment, which is parallel to the second diagonal; or... The pixel repeating unit includes four light-emitting groups arranged side by side along a first direction. In the first light-emitting group, the third light-emitting element, the second light-emitting element, the first light-emitting element, and the second light-emitting element are arranged side by side in sequence along a second direction. In the second light-emitting group, the third light-emitting element and three first light-emitting elements are arranged side by side in sequence along the second direction. In the third light-emitting group, the first light-emitting element, the second light-emitting element, the third light-emitting element, and the second light-emitting element are arranged side by side in sequence along the second direction. In the fourth light-emitting group, three first light-emitting elements and one third light-emitting element are arranged side by side in sequence along the second direction. Along the first direction, the light-emitting elements in two adjacent light-emitting groups are staggered in the second direction.

[0017] Optionally, the first sub-pixel includes three first light-emitting elements, the second sub-pixel includes one second light-emitting element, and the third sub-pixel includes one third light-emitting element; The center line connecting the three first light-emitting elements forms a first broken line, and the interior angle of the first broken line is an obtuse angle. The pixel repeating unit includes four light-emitting groups arranged side by side along a first direction. In the first light-emitting group, a third light-emitting element, a first light-emitting element, and a second light-emitting element are arranged side by side in sequence along a second direction. In the second light-emitting group, a second light-emitting element and two first light-emitting elements are arranged side by side in sequence along the second direction. In the third light-emitting group, two first light-emitting elements and one second light-emitting element are arranged side by side in sequence along the second direction. In the fourth light-emitting group, a first light-emitting element, a second light-emitting element, and a third light-emitting element are arranged side by side in sequence along the second direction. The second direction is orthogonal to the first direction. Along the first direction, the light-emitting elements in two adjacent light-emitting groups are staggered in the second direction.

[0018] Optionally, the first sub-pixel includes two first light-emitting elements, the second sub-pixel includes one second light-emitting element, and the third sub-pixel includes two third light-emitting elements; In the display device, a second light-emitting element is located between three third light-emitting elements and three first light-emitting elements, and the center line connecting the three third light-emitting elements and the three first light-emitting elements forms a second hexagon; The pixel repeating unit includes four light-emitting groups arranged side by side along a first direction. In the first light-emitting group, a first light-emitting element, a second light-emitting element, and a third light-emitting element are arranged side by side in sequence along a second direction. In the second light-emitting group, the first light-emitting element, the third light-emitting element, and the second light-emitting element are arranged side by side in sequence along the second direction. In the third light-emitting group, the third light-emitting element, the second light-emitting element, and the first light-emitting element are arranged side by side in sequence along the second direction. In the fourth light-emitting group, the third light-emitting element, the first light-emitting element, and the second light-emitting element are arranged side by side in sequence along the second direction. The second direction is orthogonal to the first direction. Along the first direction, the light-emitting elements in two adjacent light-emitting groups are staggered in the second direction.

[0019] Optionally, the display device further includes a pixel circuitry layer and microlenses; The microlens is located on the side of the film layer where the light-emitting element is located that is far away from the pixel circuit setting layer, and is set in a one-to-one correspondence with the light-emitting element; the orthographic projection of the microlens on the pixel circuit setting layer covers the orthographic projection of the light-emitting element on the pixel circuit setting layer.

[0020] Optionally, the focal length of the microlens is f, and the light-emitting area of ​​the corresponding light-emitting element is circular with radius R. The focal length and radius satisfy the following relationship: tan(θ1)·f≤R≤tan(θ2)·f; in, ; ; λ is the center wavelength of the color of the sub-pixel corresponding to the light-emitting element, and D is the aperture of the microlens.

[0021] Optionally, the shape of the light-emitting area of ​​the light-emitting element is polygonal.

[0022] Optionally, the display device is a silicon-based organic light-emitting display device.

[0023] The technical solution of this invention optimizes pixel arrangement by configuring a display device such that at least one sub-pixel of a given luminous color includes at least two luminous elements, and all luminous elements corresponding to the same sub-pixel of that color are connected to the same pixel circuit. This results in a denser arrangement of luminous elements, improved area utilization, optimized area ratio of different sub-pixels, further balanced current density, extended lifespan, and improved display device quality. When the display device includes a microlens, the optimized pixel arrangement also reduces the fabrication difficulty of the microlens, further improving light extraction efficiency and reducing power consumption loss.

[0024] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a top view schematic diagram of an existing display device; Figure 2 This is a top view of a display device provided in an embodiment of the present invention; Figure 3 It is along Figure 2 A cross-sectional structural diagram of the display device taken from the middle DD' section; Figure 4 This is a top view of another existing display device. Figure 5 This is a top view of another display device provided in an embodiment of the present invention; Figure 6 It is along Figure 5 A cross-sectional structural diagram of a display device as captured by EE'; Figure 7 It is along Figure 5 A cross-sectional structural diagram of a display device as captured by JJ'; Figure 8 It is along Figure 5 Another cross-sectional view of the display device taken from the middle section EE'; Figure 9 It is along Figure 5 Another cross-sectional view of the display device taken from the middle section EE'; Figure 10 It is along Figure 5 Another cross-sectional view of the display device taken from the middle section EE'; Figure 11 It is along Figure 5 Another cross-sectional view of the display device captured by JJ'; Figure 12 It is along Figure 5 Another cross-sectional view of the display device taken from the middle section EE'; Figure 13 This is a top view of another display device provided in an embodiment of the present invention; Figure 14 This is a top view of another display device provided in an embodiment of the present invention; Figure 15This is a top view structural diagram of another display device provided in an embodiment of the present invention. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0028] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the implementation methods provided in the embodiments of this application can be combined with each other without contradiction.

[0029] First, it should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "comprising" and similar terms mean that the element or object preceding the word encompasses the element or object listed after the word and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes. Furthermore, the shapes and sizes of the components in the accompanying drawings do not reflect actual proportions and are only intended to illustrate the content of this invention.

[0030] Figure 2 This is a top view schematic diagram of a display device provided in an embodiment of the present invention. Figure 3 It is along Figure 2 A cross-sectional structural diagram of the display device taken from DD', as shown below. Figure 2 and Figure 3As shown, the display device 100 provided in this embodiment of the invention includes a plurality of pixel repeating units P arranged in an array; the pixel repeating unit P includes at least two different colors of sub-pixels 10, and each sub-pixel 10 includes at least one light-emitting element 20; in a pixel repeating unit P, the sub-pixel 10 includes a first sub-pixel 11, the light-emitting element 20 includes a first light-emitting element 21, the first sub-pixel 11 includes m first light-emitting elements 21, m≥2; the display device 100 also includes a pixel circuit 30; the pixel circuit 30 includes a first pixel circuit 31; the m first light-emitting elements 21 corresponding to the first sub-pixel 11 are electrically connected to the same first pixel circuit 31.

[0031] Among them, the pixel repetition unit P refers to the smallest pixel arrangement period in the entire display device. By periodically arranging the pixel repetition units, the pixel arrangement of the entire display device can be obtained.

[0032] The pixel repeating unit P includes at least two different colors of sub-pixels 10, and each sub-pixel 10 includes at least one light-emitting element 20. In this embodiment, there is one sub-pixel 10 in the pixel repeating unit P, which includes at least two light-emitting elements 20. Specifically, in the pixel repeating unit P, the first sub-pixel 11 includes m (m≥2) first light-emitting elements 21, and the m first light-emitting elements 21 are connected to the same first pixel circuit 31.

[0033] Optionally, the first sub-pixel 11 is a sub-pixel in the pixel repetition unit P that has relatively low efficiency and lifetime (typically with a relatively large area), such as a blue sub-pixel, or it could also be a red sub-pixel. For example, Figure 2 Taking the first sub-pixel 11 as the blue sub-pixel, and one first sub-pixel 11 (blue sub-pixel) including four first light-emitting elements 21 (blue light-emitting elements) as an example, the following is an illustration.

[0034] Reference Figure 2 In the pixel repetition unit P, sub-pixel 10 also includes a second sub-pixel 12 and a third sub-pixel 13, compared to Figure 2 and Figure 1 When the pixel arrangement (the relative position of each sub-pixel in the pixel repeating unit) is the same, the embodiments of the present invention optimize the pixel arrangement (specifically, the arrangement of the light-emitting elements is more compact) by setting the first sub-pixel 11 to include at least two first light-emitting elements 21 and setting all the first light-emitting elements 21 corresponding to the first sub-pixel 11 to be connected to the same pixel circuit, thereby improving the area utilization rate and thus improving the quality of the display device.

[0035] Specifically, the anode of the light-emitting element is electrically connected to the pixel circuit. Figure 1In the illustrated scheme, when one subpixel corresponds to one light-emitting element, the shape of the anode is usually similar to the shape of the pixel opening, but its size is slightly larger than the pixel opening. Thus, when subpixels of different colors have different sizes, the gaps between different subpixels are relatively large due to the limited size / shape of the panel. For example, the gaps between the anodes of the light-emitting elements corresponding to different subpixels are relatively large, resulting in low area utilization, specifically manifested as low anode aperture ratio and low pixel aperture ratio.

[0036] In this embodiment of the invention, reference is made to... Figure 3 The first light-emitting element 21 includes a first anode structure 211. m first light-emitting elements 21 are connected to the same first pixel circuit 31. A single anode (shaped like a...) can be formed by electrically connecting the m first anode structures 211 corresponding to the m first light-emitting elements 21. Figure 2 The shape of the dashed frame surrounding the four first light-emitting elements 21 (such as the dashed frame indicated by the mark "11") allows the anode of this entire assembly to be electrically connected to the first pixel circuit 31, thus enabling m first light-emitting elements 21 to be connected to the same first pixel circuit 31. (Comparison) Figure 2 and Figure 1 As can be seen, this embodiment sets a first sub-pixel 11 to include m (m≥2) first light-emitting elements 21, and the m first light-emitting elements 21 are connected to the same first pixel circuit 31. This makes the area of ​​the overall anode corresponding to the m first light-emitting elements 21 greater than the sum of the areas of the m first light-emitting elements 21 and the gap spaces between adjacent first light-emitting elements 21. This is beneficial to increase the area of ​​the overall anode corresponding to the first sub-pixel 11, increase the anode aperture ratio, that is, increase the effective area that can be used to make the anode in the display device, and improve the area utilization rate. Furthermore, on the large-area overall anode, it is easier to adjust the openings corresponding to each light-emitting element in the pixel limiting layer more flexibly, realize the maximization of the pixel opening (in this invention, the pixel opening corresponding to a sub-pixel is equal to the sum of the light-emitting openings corresponding to all the light-emitting elements it includes), improve the pixel aperture ratio, improve the area utilization rate, optimize the area ratio of different sub-pixels, further balance the current density, and improve the lifespan.

[0037] also, Figure 4 This is a top view of another existing display device, such as... Figure 4As shown, in related technologies, optical microlenses 04 are set on the light-emitting side of each sub-pixel (light-emitting element) to improve light extraction efficiency and brightness, reduce power consumption, and extend lifespan. However, since sub-pixels of different colors have different sizes, the optical microlenses 04 corresponding to sub-pixels of different colors need to have different sizes to match sub-pixels of different sizes, which increases the difficulty of the manufacturing process. Specifically, optical microlenses need to meet a certain aspect ratio to achieve optical path modulation; the larger the diameter, the higher the height. Therefore, for sub-pixels of different colors with large size differences, the sizes (diameter and height) of the optical microlenses are significantly different. In terms of manufacturing, it is very difficult to match sub-pixels of different colors with microlenses of significantly different sizes (especially height), which affects yield and modulation effect, and thus affects the quality of the display device. In addition, referring to... Figure 4 In existing technologies, due to suboptimal arrangement, the gaps between sub-pixels of different colors are relatively large, resulting in a small effective area for setting the optical microlens 04 in the display device (which can be understood as a low aperture ratio of the optical microlens), thus limiting the improvement of light extraction efficiency. Furthermore, research shows that the further away from the focal region of the optical microlens, the greater the probability of light loss. For the lost light, the power used to generate that light is wasted. Therefore, the larger the area of ​​the light-emitting element, the more severe the light loss and power consumption waste. The above problems can also be improved using the technical solutions of the embodiments of the present invention.

[0038] For example, Figure 5 This is a top view schematic diagram of another display device provided in an embodiment of the present invention. Figure 6 It is along Figure 5 A cross-sectional structural diagram of a display device, taken from section EE'. Figure 7 It is along Figure 5 A cross-sectional structural diagram of a display device, as shown in the image below. Figures 5-7 As shown, optionally, the display device 100 further includes a pixel circuit setting layer 3 and a microlens 40; the microlens 40 is located on the side of the film layer where the light-emitting element 20 is located away from the pixel circuit setting layer 3, and is arranged in a one-to-one correspondence with the light-emitting element 20; the orthographic projection of the microlens 40 on the pixel circuit setting layer 3 covers the orthographic projection of the light-emitting element 20 on the pixel circuit setting layer 3.

[0039] Reference Figure 5Taking a pixel repetition unit P, where sub-pixel 10 includes a first sub-pixel 11, a second sub-pixel 12, and a third sub-pixel 13 as an example, the corresponding light-emitting element 20 includes a first light-emitting element 21, a second light-emitting element 22, and a third light-emitting element 23. Optionally, the second sub-pixel 12 includes n second light-emitting elements 22, and the third sub-pixel 13 includes k third light-emitting elements 23. Correspondingly, the optional microlens 40 includes a first microlens 41, a second microlens 42, and a third microlens 43. The microlenses 40 are configured in a one-to-one correspondence with the light-emitting elements 20. Specifically, the first microlens 41 is configured in a one-to-one correspondence with the first light-emitting element 21, the second microlens 42 is configured in a one-to-one correspondence with the second light-emitting element 22, and the third microlens 43 is configured in a one-to-one correspondence with the third light-emitting element 23. Further, referring to... Figure 7 The orthographic projection of the first microlens 41 on the pixel circuit setting layer 3 covers the orthographic projection of the first light-emitting element 21 on the pixel circuit setting layer 3; the orthographic projection of the second microlens 42 on the pixel circuit setting layer 3 covers the orthographic projection of the second light-emitting element 22 on the pixel circuit setting layer 3; and the orthographic projection of the third microlens 43 on the pixel circuit setting layer 3 covers the orthographic projection of the third light-emitting element 23 on the pixel circuit setting layer 3.

[0040] Optionally, n ≤ k ≤ m, m > n; n ≥ 1. Specifically, it can be divided into the following cases: n = k < m, or n < k = m, or n < k < m. Specifically, in this embodiment, the light-emitting element can be split only for the first sub-pixel (i.e., a sub-pixel includes two or more light-emitting elements), or the light-emitting elements can be split for two or more sub-pixels. The number and ratio of splits can be determined according to the efficiency and lifetime of the light-emitting material of the sub-pixel.

[0041] Reference Figure 5 In this embodiment, based on n≤k≤m, m>n, optionally, the first sub-pixel 11 is a blue sub-pixel, the second sub-pixel 12 is a green sub-pixel, and the third sub-pixel 13 is a red sub-pixel. The efficiency and lifetime of the red luminescent material are between those of the green and blue luminescent materials (blue is the lowest, green is the highest). Therefore, the number k of the third luminescent elements 23 corresponding to the third sub-pixel (red sub-pixel) 13 is between the number n of the second luminescent elements 22 corresponding to the second sub-pixel (green sub-pixel) 12 and the number m of the first luminescent elements 21 corresponding to the first sub-pixel (blue sub-pixel) 11.

[0042] By employing the technical solution of this invention, at least one color sub-pixel includes at least two light-emitting elements, and these light-emitting elements are connected to the same pixel circuit. This optimizes the overall layout of the light-emitting elements without altering the original relative positions of the sub-pixels, resulting in a more compact arrangement of light-emitting elements in the display device, reducing space waste, improving area utilization, optimizing the area ratio of different sub-pixels, further balancing current density, and extending lifespan. Furthermore, it allows the sizes of the light-emitting elements (such as the first light-emitting element 21, the second light-emitting element 22, and the third light-emitting element 23) corresponding to different color sub-pixels to become more consistent. Thus, in a display device with a microlens design, by setting microlenses 40 in a one-to-one correspondence with light-emitting elements 20, the sizes of the microlenses corresponding to different color sub-pixels can become more consistent, reducing the difficulty of microlens fabrication and ensuring product yield and quality. In addition, because the arrangement of the light-emitting elements is optimized, the aperture ratio of the microlenses can be increased, i.e., the effective area available for fabricating microlenses can be increased, allowing for the fabrication of more microlenses within a limited space, further improving light extraction efficiency. Furthermore, by splitting the light-emitting elements of sub-pixels and reducing the size of individual light-emitting elements, light loss can be effectively reduced, thereby improving light extraction efficiency and reducing power consumption loss (see the explanation above for the specific principle).

[0043] Reference Figure 6 and Figure 7 Optionally, an encapsulation layer 7 is provided between the microlens 40 and the light-emitting element layer 2 to protect the light-emitting element layer 2 and the pixel circuit setting layer 3.

[0044] The technical solutions of the embodiments of the present invention will be further described in detail below, taking a display device including a microlens as an example.

[0045] Reference Figure 7 When sub-pixel 10 includes a first sub-pixel 11, a second sub-pixel 12, and a third sub-pixel 13, the corresponding optional pixel circuit 30 includes a first pixel circuit 31, a second pixel circuit 32, and a third pixel circuit 33. The m first light-emitting elements 21 corresponding to the first sub-pixel 11 are electrically connected to the same first pixel circuit 31, the n second light-emitting elements 22 corresponding to the second sub-pixel 12 are electrically connected to the same second pixel circuit 32, and the k third light-emitting elements 23 corresponding to the third sub-pixel 13 are electrically connected to the same third pixel circuit 33.

[0046] Reference Figure 7 The display device includes a pixel circuit setting layer 3, a first insulating layer 5, and a light-emitting element layer 2. The first insulating layer 5 is located on one side of the pixel circuit setting layer 3, and the light-emitting element layer 2 is located on the side of the first insulating layer 5 away from the pixel circuit setting layer 3. The pixel circuit 30 is located in the pixel circuit setting layer 3, and the light-emitting element 20 is located in the light-emitting element layer 2.

[0047] Optionally, the display device is a silicon-based organic light-emitting display device. In this case, the pixel circuit setting layer 3 is a silicon substrate, and the pixel circuit 30 is formed in the silicon substrate. It should be noted that the pixel circuit typically includes several transistors and capacitors. Figure 6 and Figure 7 Only one transistor 301 in the pixel circuit is shown. This transistor 301 is electrically connected to the light-emitting element 20, specifically through a through-hole in the first insulating layer 5 and is electrically connected to the anode structure of the light-emitting element 20.

[0048] Reference Figure 7 Taking the light-emitting element 20, which includes a first light-emitting element 21, a second light-emitting element 22, and a third light-emitting element 23, as an example, optionally, the first insulating layer 5 is provided with a first through hole 501, a second through hole 502, and a third through hole 503. The first light-emitting element 21 includes a first anode structure 211, the second light-emitting element 22 includes a second anode structure 221, and the third light-emitting element 23 includes a third anode structure 231. The first anode structure 211 is electrically connected to the first pixel circuit 31 through the first through hole 501, the second anode structure 221 is electrically connected to the second pixel circuit 32 through the second through hole 502, and the third anode structure 231 is electrically connected to the third pixel circuit 33 through the third through hole 503. The first anode structure 211, the second anode structure 221, and the third anode structure 231 are arranged alternately (specifically, they are spaced apart by the pixel limiting layer 6).

[0049] Furthermore, referring to the above description, in this embodiment, for a sub-pixel comprising two or more light-emitting elements, the anode structures of all the light-emitting elements corresponding to the sub-pixel can be electrically connected to form a single anode, and then the single anode can be electrically connected to the corresponding pixel circuit, thereby achieving electrical connection between all the light-emitting elements corresponding to the sub-pixel and the same pixel circuit. In this case, for all the light-emitting elements in the same sub-pixel, one anode structure can be electrically connected to the pixel circuit through a via, or the anode structures of two or more, or even all, light-emitting elements can be electrically connected to the pixel circuit through vias respectively. This embodiment of the invention does not limit this.

[0050] For example, refer to Figure 6 For the first sub-pixel 11, m first anode structures 211 corresponding to m first light-emitting elements 21 in the first sub-pixel 11 can be electrically connected; a first through hole 501 is provided in the first insulating layer 5, and at least one of the m first anode structures 211 is electrically connected to the first pixel circuit 31 through the first through hole 501.

[0051] Specifically, for all the first light-emitting elements 21 in a first sub-pixel 11, a first through hole 501 can be provided in the first insulating layer 5 corresponding to the first anode structure 211 of one first light-emitting element 21, or a first through hole 501 can be provided in the first insulating layer 5 corresponding to the first anode structure 211 of two or more first light-emitting elements 21 respectively. Since the first anode structures 211 of all the first light-emitting elements 21 in a first sub-pixel 11 are electrically connected, the above-mentioned configuration methods can realize that all the first light-emitting elements 21 in the same first sub-pixel 11 are electrically connected to the same first pixel circuit 31. Figure 6 The illustration only takes an example of a first anode structure 211 being electrically connected to a first pixel circuit 31 through a first through-hole 501. By reducing the number of first through-holes, the fabrication difficulty can be reduced, the precision requirements can be lowered, and the fabrication yield can be improved.

[0052] Similarly, for the second sub-pixel 12, when n≥2, optionally, in the second sub-pixel 12, the n second light-emitting elements 22 corresponding to the n second anode structures 221 are electrically connected; the first insulating layer 5 is provided with a second through hole 502, and among the n second anode structures 221, at least one second anode structure 221 is electrically connected to the second pixel circuit 32 through the second through hole 502. The specific setting method can be referred to the setting of the first anode structure 211 in the first sub-pixel 11, and will not be illustrated here.

[0053] For the third sub-pixel 13, when k≥2, optionally, in the third sub-pixel 13, the k third light-emitting elements 23 corresponding to the k third anode structures 231 are electrically connected; the first insulating layer 5 is provided with a third through hole 503, and among the k third anode structures 231, at least one third anode structure 231 is electrically connected to the third pixel circuit 33 through the third through hole 503. The specific setting method can be referred to the setting of the first anode structure 211 in the first sub-pixel 11, and will not be illustrated here.

[0054] The following section, taking the first sub-pixel 11 as an example, will provide a more detailed explanation of the anode structure of the light-emitting element and how to electrically connect the anode structures of all light-emitting elements in a sub-pixel.

[0055] Reference Figure 6 Optionally, the first anode structure 211 includes a first reflective anode 2111, a second insulating layer 2112, and a first transparent anode 2113 stacked sequentially. The first transparent anode 2113 is located on the side of the first reflective anode 2111 away from the pixel circuit layer 3. This configuration can form a strong microcavity anode. By combining the strong microcavity anode with a high reflectivity cathode, an optical resonant cavity can be formed in the organic light-emitting layer region, forming a microcavity organic light-emitting diode, improving color purity, and optimizing light extraction efficiency.

[0056] Optionally, the first reflective anode 2111 includes a first anode layer and a second anode layer, with the second anode layer located on the side of the first anode layer away from the pixel circuit setting layer 3. By setting the first reflective anode 2111 to be formed by stacking the first anode layer and the second anode layer, it is beneficial to improve the stability and reliability of the first anode structure 211.

[0057] Optionally, the material of the first anode layer includes at least one of titanium nitride and tantalum nitride; the material of the second anode layer is a first metal, the first metal having a reflectivity of more than 80% in the visible light band.

[0058] Among them, titanium nitride and tantalum nitride are materials with good chemical stability and are not easily oxidized. Using titanium nitride or tantalum nitride to make the first anode layer is beneficial to ensuring the stability and reliability of the first reflective anode 2111, thereby ensuring the stability and reliability of the first anode structure 211.

[0059] The second anode layer is made of a metallic material (the first metal), which can utilize the high reflectivity of the metal to the visible light band to ensure the high reflectivity of the first reflective anode 2111 to the visible light band. Optionally, the first metal may include, but is not limited to, aluminum and silver.

[0060] The first transparent anode 2113 is made of at least one of indium tin oxide and indium zinc oxide. The use of the first transparent anode 2113 facilitates optical control, carrier transport, and structural stability. The first transparent anode 2113 needs to balance light transmittance and conductivity; it can be made of indium tin oxide or indium zinc oxide, or other materials can be used. This embodiment of the invention does not limit the choice of materials.

[0061] Optionally, the material of the second insulating layer 2112 includes at least one of silicon oxide, silicon nitride, silicon oxynitride, and aluminum oxide. These materials can provide optical matching, preventing light loss caused by direct contact between the first reflective anode 2111 and the first transparent anode 2113 (their optical constants (e.g., refractive index and extinction coefficient) are mismatched, leading to partial light transmission and absorption at their interface, resulting in a decrease in overall reflectivity and affecting light extraction efficiency), thus improving light extraction efficiency. The material of the second insulating layer 2112 is not limited to these materials; other insulating materials that meet the requirements can also be used to prepare the second insulating layer 2112.

[0062] Reference Figure 6 Optionally, the first anode structure 211 is electrically connected to the first pixel circuit 31 through the first through hole 501. Specifically, the first reflective anode 2111 is directly electrically connected to the first pixel circuit 31 through the first through hole 501, and the first transparent anode 2113 is in contact with the first reflective anode 2111 and is electrically connected to the first pixel circuit 31 through the first reflective anode 2111.

[0063] Based on the first anode structure 211 described above, the following provides several feasible configuration methods for electrically connecting the first anode structures 211 of all the first light-emitting elements 21 in the first sub-pixel 11.

[0064] As a feasible electrical connection method, refer to Figure 6 Optionally, the first transparent anode 2113 covers the second insulating layer 2112 and is in direct contact with the sidewall of the first reflective anode 2111; the display device also includes a first connecting part 81; the first connecting part 81 is located between two adjacent first reflective anodes 2111, and is integrally formed with the first transparent anode 2113 and connects the two adjacent first transparent anodes 2113.

[0065] Specifically, for each first anode structure 211, by setting the first transparent anode 2113 to cover the second insulating layer 2112 and to directly contact the sidewall of the first reflective anode 2111, the first transparent anode 2113 and the first reflective anode 2111 can be electrically connected. Furthermore, while forming the pattern of the first transparent anode 2113, the pattern of the first connecting part 81 is simultaneously and integrally formed. By using the first connecting part 81 to connect two adjacent first transparent anodes 2113, the first anode structures 211 of all the first light-emitting elements 21 corresponding to the first sub-pixel 11 can be electrically connected.

[0066] As another feasible method of electrical connection Figure 8 It is along Figure 5 Another cross-sectional view of the display device taken from EE', see reference. Figure 8 Optionally, the display device further includes a second connecting portion 82, a third connecting portion 83, and a fourth connecting portion 84; the second connecting portion 82 is located between two adjacent first reflective anodes 2111, and is integrally formed with and connected to the two adjacent first reflective anodes 2111; the third connecting portion 83 is located between two adjacent second insulating layers 2112, and is integrally formed with and connected to the two adjacent second insulating layers 2112; the fourth connecting portion 84 is located between two adjacent first transparent anodes 2113, and is integrally formed with and connected to the two adjacent first transparent anodes 2113; in the edge region of the first sub-pixel 11, the first transparent anode 2113 is in direct contact with the sidewall of the first reflective anode 2111.

[0067] Specifically, while forming the pattern of the first reflective anode 2111, the pattern of the second connecting portion 82 is simultaneously and integrally formed, and the second connecting portion 82 connects two adjacent first reflective anodes 2111; while forming the pattern of the second insulating layer 2112, the pattern of the third connecting portion 83 is simultaneously and integrally formed, and the third connecting portion 83 connects two adjacent second insulating layers 2112; while forming the pattern of the first transparent anode 2113, the pattern of the fourth connecting portion 84 is simultaneously and integrally formed, and the fourth connecting portion 84 connects two adjacent first transparent anodes 2113; thus, the first reflective anodes 2111 of all the first light-emitting elements 21 of the same first sub-pixel 11 are connected to form a whole reflective anode, the second insulating layers 2112 of all the first light-emitting elements 21 of the same first sub-pixel 11 are connected to form a whole insulating layer, and the first transparent anodes 2113 of all the first light-emitting elements 21 of the same first sub-pixel 11 are connected to form a whole transparent anode. Furthermore, in the edge region of the first sub-pixel 11, by setting the first transparent anode 2113 to be in direct contact with the sidewall of the first reflective anode 2111, the entire transparent anode and the entire reflective anode can be electrically connected, realizing the electrical connection of each first anode structure 211 of all the first light-emitting elements 21 corresponding to the first sub-pixel 11. With this setting, the manufacturing precision requirement of the first through hole 501 can be greatly reduced, improving the manufacturing yield.

[0068] As another feasible method of electrical connection Figure 9 It is along Figure 5 Another cross-sectional view of the display device taken from EE', see reference. Figure 9 Optionally, the display device further includes a second connecting portion 82 and a fifth connecting portion 85; the second connecting portion 82 is located between two adjacent first reflective anodes 2111, and is integrally formed with and connected to the two adjacent first reflective anodes; the fifth connecting portion 85 is located between two adjacent second insulating layers 2112, and is integrally formed with and connected to the two adjacent first transparent anodes 2113; the fifth connecting portion 85 is in contact with the second connecting portion 82.

[0069] Specifically, while forming the pattern of the first reflective anode 2111, the pattern of the second connecting portion 82 is simultaneously and integrally formed, and the second connecting portion 82 connects two adjacent first reflective anodes 2111; for each first light-emitting element 21 in the first sub-pixel 11, the second insulating layer 2112 in the first anode structure 211 is independently spaced; while forming the pattern of the first transparent anode 2113, the pattern of the fifth connecting portion 85 is simultaneously and integrally formed, and the fifth connecting portion 85 connects two adjacent first transparent anodes 2113; thus, all the first light-emitting elements of the same first sub-pixel 11... The first reflective anodes 2111 of the first sub-pixel 21 are connected to form a single reflective anode. The first transparent anodes 2113 of all the first light-emitting elements 21 of the same first sub-pixel 11 are connected to form a single transparent anode. Because the single transparent anode is in contact with the single reflective anode in the space between two adjacent second insulating layers 2112 (i.e., the fifth connecting portion 85 is in contact with the second connecting portion 82), the single transparent anode and the single reflective anode are electrically connected. This allows for electrical connection of the individual first anode structures 211 of all the first light-emitting elements 21 corresponding to the first sub-pixel 11. This configuration ensures the optical matching function of the second insulating layer 2112 while increasing the contact area between the reflective anode and the transparent anode, reducing contact resistance, and lowering power consumption.

[0070] In this embodiment, refer to Figure 9 Similarly, in the edge region of the first sub-pixel 11, the first transparent anode 2113 can be made to directly contact the sidewall of the first reflective anode 2111 to further increase the contact area between the reflective anode and the transparent anode.

[0071] In summary, the above embodiments have provided a detailed description of the first anode structure 211 of the first light-emitting element 21 and how to electrically connect the first anode structures 211 of all the first light-emitting elements 21 in a first sub-pixel 11. When the second sub-pixel 12 and / or the third sub-pixel 13 include multiple light-emitting elements, the anode structures of each light-emitting element can also be electrically connected in the same manner as described above, and will not be repeated here.

[0072] Reference Figure 7 The second light-emitting element 22 includes a second anode structure 221, which comprises a second reflective anode 2211, a third insulating layer 2212, and a second transparent anode 2213 stacked sequentially. The second transparent anode 2213 is located on the side of the second reflective anode 2211 away from the pixel circuit layer 3. The third light-emitting element 23 includes a third anode structure 231, which comprises a third reflective anode 2311, a fourth insulating layer 2312, and a third transparent anode 2313 stacked sequentially. The third transparent anode 2313 is located on the side of the third reflective anode 2311 away from the pixel circuit layer 3.

[0073] Optionally, the first reflective anode 2111, the second reflective anode 2211, and the third reflective anode 2311 are arranged in the same layer with intervals, and the three are prepared in the same process.

[0074] Reference Figure 7 The light-emitting element layer 2 includes a cathode layer 201. For the first light-emitting element 21, the space between the cathode layer 201 and the first reflective anode 2111 is the space where the optical resonant cavity of the first light-emitting element 21 is located. For the second light-emitting element 22, the space between the cathode layer 201 and the second reflective anode 2211 is the space where the optical resonant cavity of the second light-emitting element 22 is located. For the third light-emitting element 23, the space between the cathode layer 201 and the third reflective anode 2311 is the space where the optical resonant cavity of the third light-emitting element 23 is located. Since the emission wavelengths of the first sub-pixel 11, the second sub-pixel 12, and the third sub-pixel 13 are different, the microcavity lengths are different. Optionally, the thicknesses of the second insulating layer 2112, the third insulating layer 2212, and the fourth insulating layer 2312 are different, and / or the thicknesses of the first transparent anode 2113, the second transparent anode 2213, and the third transparent anode 2313 are different, so as to realize the first light-emitting element 21, the second light-emitting element 22, and the third light-emitting element 23 with different microcavity lengths.

[0075] For example, Figure 7 The illustration is based on an example where the second insulating layer 2112, the third insulating layer 2212, and the fourth insulating layer 2312 have the same thickness, the first transparent anode 2113 has a smaller thickness than the second transparent anode 2213, and the second transparent anode 2213 has a smaller thickness than the third transparent anode 2313, to match the blue light wavelength being smaller than the green light wavelength, and the green light wavelength being smaller than the red light wavelength. In other embodiments, the thickness of the second insulating layer 2112 can be set to be smaller than the thickness of the third insulating layer 2212, the thickness of the third insulating layer 2212 can be smaller than the thickness of the fourth insulating layer 2312, and the thicknesses of the first transparent anode 2113, the second transparent anode 2213, and the third transparent anode 2313 can be the same. In other embodiments, the thickness of the first transparent anode 2113 may be less than the thickness of the second transparent anode 2213, the thickness of the second transparent anode 2213 may be less than the thickness of the third transparent anode 2313, and the thickness of the second insulating layer 2112 may be less than the thickness of the third insulating layer 2212, and the thickness of the third insulating layer 2212 may be less than the thickness of the fourth insulating layer 2312.

[0076] It should be noted that, Figure 6 and Figure 7 The illustration only takes the entire cathode layer 201 as an example. In other embodiments, the cathode layer 201 can also be patterned. For example, the cathode layer 201 can be configured to include multiple cathode blocks, with each cathode block corresponding to a sub-pixel.

[0077] Below, taking the first sub-pixel 11 as an example, we will further explain in detail how to split the light-emitting element corresponding to a sub-pixel so that a sub-pixel includes two or more light-emitting elements.

[0078] Reference Figure 6 Optionally, the display device further includes a pixel defining layer 6, which is located on the side of the film layer where the first anode structure 211 is located away from the pixel circuit setting layer 3; the pixel defining layer 6 defines a light-emitting opening 60; the light-emitting opening 60 includes a first light-emitting opening 601, which is configured in a one-to-one correspondence with the first anode structure 211, and at least a portion of the first anode structure 211 is located within the first light-emitting opening 601; the first light-emitting element 21 further includes a first light-emitting functional layer 212, and at least a portion of the first light-emitting functional layer 212 is located within the first light-emitting opening 601.

[0079] Specifically, the light-emitting opening 60 is set in a one-to-one correspondence with the light-emitting element 20. Combined with... Figure 6 and Figure 7 The light-emitting opening 60 includes a first light-emitting opening 601, a second light-emitting opening 602, and a third light-emitting opening 603. The first light-emitting opening 601 is configured to correspond one-to-one with the first anode structure 211 and is used to accommodate the first light-emitting functional layer 212 to define the light-emitting area of ​​the first light-emitting element 21. The second light-emitting opening 602 is configured to correspond one-to-one with the second anode structure 221 and is used to accommodate the second light-emitting functional layer 222 to define the light-emitting area of ​​the second light-emitting element 22. The third light-emitting opening 603 is configured to correspond one-to-one with the third anode structure 231 and is used to accommodate the third light-emitting functional layer 232 to define the light-emitting area of ​​the third light-emitting element 23.

[0080] At least a portion of the first anode structure 211 is located within the first light-emitting opening 601. Specifically, this can be understood as at least a portion of the orthographic projection of the first anode structure 211 onto the pixel circuit setting layer 3 being located within the orthographic projection of the first light-emitting opening 601 onto the pixel circuit setting layer 3. In other words, the first light-emitting opening 601 exposes at least a portion of the first anode structure 211. Similarly, at least a portion of the second anode structure 221 is located within the second light-emitting opening 602, and at least a portion of the third anode structure 231 is located within the third light-emitting opening 603.

[0081] For the first light-emitting element 21, at least a portion of the aforementioned first light-emitting functional layer 212 is located within the first light-emitting opening 601, as shown in the reference... Figure 6 In one embodiment, all the first light-emitting functional layers 212 may be located within the first light-emitting opening 601. In this case, the first light-emitting functional layers 212 of each first light-emitting element 21 in the same first sub-pixel 11 are separated by the pixel limiting layer 6, thereby realizing the splitting of the light-emitting elements, so that a first sub-pixel 11 includes two or more first light-emitting elements 21.

[0082] In other embodiments, a portion of the first light-emitting functional layer 212 may be located within the first light-emitting opening 601. For example, Figure 10 It is along Figure 5 Another cross-sectional view of the display device, taken from the EE' section. Figure 11 It is along Figure 5 Another cross-sectional view of the display device, as shown in the diagram below. Figure 10 and Figure 11 As shown, optionally, the pixel defining layer 6 includes a first defining portion 61 and a second defining portion 62. The first defining portion 61 is located between adjacent light-emitting elements 20 and fills the gap between adjacent anode structures. The second defining portion 62 is located on the side of the first defining portion 61 away from the pixel circuit setting layer 3. The second defining portion 62 includes a first defining portion 621 and a second defining portion 622. The second defining portion 622 is located on the side of the first defining portion 621 away from the pixel circuit setting layer 3. The orthographic projection of the first defining portion 621 on the pixel circuit setting layer 3 is located inside the orthographic projection of the second defining portion 622 on the pixel circuit setting layer 3.

[0083] The first limiting portion 61 is used to fill the gaps between the anode structures. The first limiting portion 61 is located between adjacent light-emitting elements 20, and fills the gaps between adjacent anode structures. "Adjacent light-emitting elements 20" at least include adjacent light-emitting elements with different emitting colors. (Refer to...) Figure 11 A first limiting portion 61 is provided between adjacent first light-emitting elements 21 and second light-emitting elements 22, which fills the gap between the first anode structure 211 and the second anode structure 221; a first limiting portion 61 is provided between adjacent second light-emitting elements 22 and third light-emitting elements 23, which fills the gap between the second anode structure 221 and the third anode structure 231; in addition, although not shown, it can be understood that a first limiting portion 61 is also provided between adjacent first light-emitting elements 21 and third light-emitting elements 23, which fills the gap between the first anode structure 211 and the third anode structure 231.

[0084] Furthermore, for multiple light-emitting elements within the same sub-pixel, taking the first sub-pixel 11 as an example, refer to... Figure 10 When there is a gap between two adjacent first anode structures 211, a first limiting portion 61 is also provided between two adjacent first light-emitting elements 21, which fills the gap between the two adjacent first anode structures 211. Specifically, refer to Figure 8 It is understandable that when there is no gap between two adjacent first anode structures 211, the first limiting part 61 exists only between adjacent light-emitting elements of different colors.

[0085] Regarding the second limiting section 62, refer to... Figure 10 and Figure 11 The second limiting part 62, in a cross-sectional view, presents an eave-like shape with the lower part receding inward and the upper part extending outward. Based on this design, refer to... Figure 10 For the same first sub-pixel, optionally, part of the first light-emitting functional layer 212 is located within the first light-emitting opening 601, and part of the first light-emitting functional layer 212 is located on the side of the pixel limiting layer 6 away from the pixel circuit setting layer 3. In the same first sub-pixel 11, the first light-emitting functional layers of each first light-emitting element 21 are interconnected. Similarly, when the second sub-pixel 12 and / or the third sub-pixel 13 includes two or more light-emitting elements, the light-emitting functional layers of each light-emitting element of the same second sub-pixel 12 (third sub-pixel 13) can also be interconnected.

[0086] In this embodiment, by adopting this special eaves-like structure design for the pixel limiting layer 6, the organic film layer can be effectively cut off, and the lateral leakage between adjacent light-emitting elements can be cut off, thereby achieving the purpose of splitting the light-emitting elements. In addition, since the light-emitting functional layers of each light-emitting element in the same sub-pixel are interconnected, compared with evaporating the organic light-emitting functional layer into a single light-emitting opening, this design can also reduce the requirements for the manufacturing precision of the light-emitting functional layer and improve the yield.

[0087] For example, the light-emitting functional layer typically includes organic film layers such as a hole injection layer, a hole transport layer, an electron blocking layer, a light-emitting layer, a hole blocking layer, an electron transport layer, and an electron injection layer. Among them, the hole injection layer and the hole transport layer have large lateral leakage. By designing an eaves-shaped pixel confinement layer at the top, the hole injection layer and the hole transport layer can be effectively cut off, thus cutting off the lateral leakage and achieving the purpose of splitting a large-area light-emitting element into multiple small-area light-emitting elements (the actual light-emitting area of ​​the entire light-emitting functional layer is the light-emitting functional layer located within the light-emitting opening).

[0088] It should be noted that for a sub-pixel that includes two or more light-emitting elements, its light-emitting area is the sum of the light-emitting areas of all light-emitting elements.

[0089] Figure 12 It is along Figure 5 Another cross-sectional view of the display device taken from the EE' section, as shown in the diagram. Figure 12As shown, optionally, the pixel limiting layer 6 further includes a third limiting portion 63 disposed between the first limiting portion 61 and the second limiting portion 62. The sidewall of the third limiting portion 63 includes at least one step. The third limiting portion 63 includes a first surface F1 and a second surface F2. The second surface F2 is located on the side of the first surface F1 away from the first limiting portion 61. The orthographic projection of the first limiting portion 621 on the pixel circuit setting layer 3 is located inside the orthographic projection of the second surface F2 on the pixel circuit setting layer 3.

[0090] Specifically, the third limiting part 63 is located between the first limiting part 61 and the second limiting part 62, and the coverage area of ​​the third limiting part exceeds the coverage area of ​​the first limiting part 61. That is, the third limiting part 63 is in contact with the upper surface of the anode structure. In addition, the first limiting part 621 is within the projection range of the upper surface (second surface F2) of the third limiting part 63, so that the upper surface of the third limiting part 63 also forms a stepped surface. In addition, the sidewall of the third limiting part 63 also includes at least one step.

[0091] In this embodiment, by providing a third limiting portion 63, and ensuring that the sidewall of the third limiting portion 63 has at least one step, and that the orthographic projection of the first limiting portion 621 on the pixel circuit setting layer 3 is located inside the orthographic projection of the upper surface (second surface F2) of the third limiting portion 63 on the pixel circuit setting layer 3, the step design mitigates the eaves-like cut-off structure, preventing the cathode layer 201 from breaking due to excessive breakage, thereby ensuring product quality. Pixel limiting layers between light-emitting elements of different colors can also be designed in this way, and will not be illustrated here individually.

[0092] In summary, the above embodiments have provided a detailed description of how a sub-pixel can include two or more light-emitting elements. Below, several exemplary implementations of the arrangement of light-emitting elements are provided.

[0093] First, it should be noted that the technical solution of this invention is applicable to any type of pixel arrangement. Since there are many different pixel arrangements, it is difficult to list them all; therefore, the following only uses... Figure 1 / Figure 4 Taking the pixel arrangement shown as an example, we will improve the arrangement of the light-emitting elements. Other pixel arrangement optimization methods will not be illustrated here.

[0094] Reference Figure 4 and Figure 5Optionally, the pixel repeating unit P includes two first sub-pixels 11 (blue sub-pixels 01), two third sub-pixels 13 (red sub-pixels 03), and four second sub-pixels (green sub-pixels 02); in the display device: there exists a first sub-pixel 11 (blue sub-pixel 01) located between the four second sub-pixels 12 (green sub-pixels 02); there exists a third sub-pixel 13 (red sub-pixels 03) located between the four second sub-pixels 12 (green sub-pixels 02); there exists a second sub-pixel 12 (green sub-pixels 02) located simultaneously between the two first sub-pixels 11 (blue sub-pixels 01) and the two third sub-pixels 13 (red sub-pixels 03); the center line connecting the four second sub-pixels 12 (green sub-pixels 02) forms a first quadrilateral Q1, and the center line connecting the two first sub-pixels 11 (blue sub-pixels 01) and the two third sub-pixels 13 (red sub-pixels 03) forms a second quadrilateral Q2.

[0095] Specifically, this pixel arrangement distributes green sub-pixels in the center and red and blue sub-pixels at the two ends of the diagonal. Through a sub-pixel sharing algorithm, adjacent pixel units can share the edge sub-pixels to complete color rendering. In this way, high-resolution display can be achieved based on a small number of sub-pixels through algorithmic compensation.

[0096] Based on the pixel arrangement described above, four arrangement methods for light-emitting elements are provided below.

[0097] As a first feasible implementation method, refer to Figure 5 Optionally, the first sub-pixel 11 includes four first light-emitting elements 21, the second sub-pixel 12 includes one second light-emitting element 22, and the third sub-pixel 13 includes two third light-emitting elements 23; in the display device, one second light-emitting element 22 is located between the two third light-emitting elements 23 and the four first light-emitting elements 21, and the center line connecting the two third light-emitting elements 23 and the four first light-emitting elements 21 forms a first hexagon S1; the pixel repeating unit P includes four light-emitting groups arranged side by side along the first direction Y, in the first light-emitting group, the third light-emitting element 23, the second light-emitting element 22, and the first light-emitting element 21... The second light-emitting element 22 is arranged side by side along the second direction X; in the second light-emitting group, the third light-emitting element 23 and the three first light-emitting elements 21 are arranged side by side along the second direction X; in the third light-emitting group, the first light-emitting element 21, the second light-emitting element 22, the third light-emitting element 23, and the second light-emitting element 22 are arranged side by side along the second direction X; in the fourth light-emitting group, the three first light-emitting elements 21 and the third light-emitting element 23 are arranged side by side along the second direction X; along the first direction Y, the light-emitting elements 20 in two adjacent light-emitting groups are staggered in the second direction X, and the first direction Y and the second direction X are orthogonal.

[0098] Optionally, one of the first direction Y and the second direction X is parallel to the extension direction of the data line (in a rectangular display device, the data line usually extends vertically), and the other is parallel to the extension direction of the scan line (in a rectangular display device, the scan line usually extends horizontally). Figure 5 The illustration is given with the first direction Y being parallel to the extension direction of the data line and the second direction X being parallel to the extension direction of the scan line.

[0099] Reference Figure 5 This embodiment optimizes pixel arrangement by splitting and arranging the light-emitting elements in the sub-pixels as described above, making the layout of the light-emitting elements more compact and improving area utilization. When the display device includes a microlens 40, the size of the microlens 40 corresponding to sub-pixels of different colors can also be made more consistent, reducing manufacturing difficulty, improving light extraction efficiency, and reducing power consumption loss (see the explanation above for the specific principle). The following arrangement methods can also achieve the above effects, and will not be described in detail hereafter.

[0100] As a second feasible implementation method Figure 13 This is a top view structural diagram of another display device provided in an embodiment of the present invention, as shown below. Figure 13 As shown, optionally, the first sub-pixel 11 includes four first light-emitting elements 21, the second sub-pixel 12 includes one second light-emitting element 22, and the third sub-pixel 13 includes two third light-emitting elements 23; in the display device, one second light-emitting element 22 is located between the two third light-emitting elements 23 and the four first light-emitting elements 21, and the center line connecting the two third light-emitting elements 23 and the four first light-emitting elements 21 forms a first hexagon S1; the center line connecting the four first light-emitting elements 21 corresponding to the first sub-pixel 11 forms a rhombus L; the first diagonal L1 of the rhombus L is parallel to the first direction Y, the second diagonal L2 of the rhombus is parallel to the second direction X, and the first direction Y and the second direction X are orthogonal; the two third light-emitting elements 23 corresponding to the third sub-pixel 13 form a first line segment L3, and the first line segment L3 is parallel to the second diagonal L2.

[0101] As a third feasible implementation method Figure 14 This is a top view structural diagram of another display device provided in an embodiment of the present invention, as shown below. Figure 14As shown, optionally, the first sub-pixel 11 includes three first light-emitting elements 21, the second sub-pixel 12 includes one second light-emitting element 22, and the third sub-pixel 13 includes one third light-emitting element 23; the center line connecting the three first light-emitting elements 21 forms a first broken line L4, and the interior angle of the first broken line L4 is an obtuse angle; the pixel repeating unit P includes four light-emitting groups arranged side by side along the first direction Y. In the first light-emitting group, the third light-emitting element 23, the first light-emitting element 21, and the second light-emitting element 22 are arranged side by side in sequence along the second direction X; in the second light-emitting group, the second light-emitting element 22 and two first light-emitting elements 21 are arranged side by side in sequence along the second direction X; in the third light-emitting group, two first light-emitting elements 21 and one second light-emitting element 22 are arranged side by side in sequence along the second direction X; in the fourth light-emitting group, the first light-emitting element 21, the second light-emitting element 22, and the third light-emitting element 23 are arranged side by side in sequence along the second direction X; the second direction X is orthogonal to the first direction Y; along the first direction Y, the light-emitting elements 20 in two adjacent light-emitting groups are staggered in the second direction X.

[0102] As a fourth feasible implementation method Figure 15 This is a top view structural diagram of another display device provided in an embodiment of the present invention, as shown below. Figure 15 As shown, optionally, the first sub-pixel 11 includes two first light-emitting elements 21, the second sub-pixel 12 includes one second light-emitting element 22, and the third sub-pixel 13 includes two third light-emitting elements 23; in the display device, one second light-emitting element 22 is located between the three third light-emitting elements 23 and the three first light-emitting elements 21, and the center line connecting the three third light-emitting elements 23 and the three first light-emitting elements 21 forms a second hexagon S2; the pixel repeating unit includes four light-emitting groups arranged side by side along the first direction Y, in the first light-emitting group, the first light-emitting element 21, the second light-emitting element 22, and the third light-emitting element 23... 23 are arranged side by side along the second direction X; in the second light-emitting group, the first light-emitting element 21, the third light-emitting element 23, and the second light-emitting element 22 are arranged side by side along the second direction X; in the third light-emitting group, the third light-emitting element 23, the second light-emitting element 22, and the first light-emitting element 21 are arranged side by side along the second direction X; in the fourth light-emitting group, the third light-emitting element 23, the first light-emitting element 21, and the second light-emitting element 22 are arranged side by side along the second direction X; the second direction X is orthogonal to the first direction Y; along the first direction Y, the light-emitting elements 20 in two adjacent light-emitting groups are staggered in the second direction X.

[0103] Reference Figures 13-15Optionally, the shape of the light-emitting area of ​​the light-emitting element 20 is polygonal. For example, the shape of the light-emitting area of ​​the light-emitting element 20 is hexagonal. Hexagons can achieve seamless tiling, thereby improving space utilization and thus improving resolution. In addition, the symmetrical structure of hexagons makes the arrangement of light-emitting elements closer to the visual sampling pattern of the human eye, resulting in a more natural transition during color mixing and reducing color banding. Furthermore, when the display device includes microlenses, the use of hexagonal light-emitting elements can smoothly transition with the spherical surface of the microlenses, reducing light reflection loss and improving light extraction efficiency.

[0104] In other embodiments, the light-emitting area of ​​the light-emitting element may be designed to be circular or other shapes, and the embodiments of the present invention are not limited thereto.

[0105] In other embodiments, when the display device includes microlenses, the light-emitting openings corresponding to multiple light-emitting elements in the same sub-pixel can be interconnected through a connecting channel. In other words, the shape of the pixel opening of a sub-pixel includes at least one dumbbell shape, with microlenses disposed at both ends of the dumbbell and the connecting rod in the middle of the dumbbell corresponding to the aforementioned connecting channel. When the shape of the pixel opening includes two or more dumbbell shapes, adjacent dumbbells have a common end. For example, the shapes of the two ends of a dumbbell shape can be polygonal, circular, or elliptical, and this embodiment of the invention does not limit this. Such a configuration helps to reduce the difficulty of the manufacturing process and ensures the feasibility of the process. In this embodiment, the number of light-emitting elements included in a sub-pixel is specifically determined according to the number of microlenses corresponding to that sub-pixel.

[0106] In one embodiment, optionally, the display device includes a microlens with a focal length of f, and the light-emitting area of ​​the light-emitting element corresponding to the microlens is circular with a radius of R. The light-emitting focal length and radius satisfy the following relationship: tan(θ1)·f ≤ R ≤ tan(θ2)·f; where, ; λ is the center wavelength of the color of the sub-pixel corresponding to the light-emitting element, and D is the aperture of the microlens.

[0107] Optionally, the light-emitting element is located at the focal plane of the microlens (allowing for a certain degree of error).

[0108] When a beam of parallel light is incident on a microlens along its optical axis, it is focused onto its focal plane (a plane perpendicular to the lens's optical axis and passing through the focal point). The intensity distribution on this focal plane is not an isolated point with zero area, but rather a spot of finite size. The intensity on this spot decreases radially outward from the center of the focal point. When the microlens itself is circular, the intensity distribution on the focal plane follows the Fraunhofer diffraction law of a circular aperture (the intensity distribution on the focal plane exhibits a Fraunhofer circular aperture diffraction pattern). Based on the reversibility of the optical path, research has found that by designing the emitting area of ​​the light-emitting element to cover most of the luminous flux contained in the Fraunhofer circular aperture diffraction pattern, the emitting area of ​​each light-emitting element can be utilized more efficiently, reducing light loss and improving light extraction efficiency.

[0109] Here, θ1 represents the position of the first-order dark ring of the Fraunhofer circular aperture diffraction spot on the focal plane, and θ2 represents the position of the second-order dark ring. The study found that when the radius of the circular luminous region is equal to the radius of the first-order dark ring of the diffraction spot, the diffracted light energy covered by this region accounts for 87% of the total diffracted light energy, and the light energy emitted by the entire circular luminous region is 1.2 times that of 87%. When the radius of the circular luminous region is equal to the radius of the second-order dark ring of the diffraction spot, the diffracted light energy covered by this region accounts for 94% of the total diffracted light energy, and the light energy emitted by the entire circular luminous region is 3.8 times that of 97%. Similarly, when the radius of the circular luminous region is equal to the radius of the third-order dark ring of the diffraction spot, the diffracted light energy covered by this region increases only slightly, reaching 97% of the total diffracted light energy, but the light energy emitted by the entire circular luminous region reaches 8.8 times that of 97%. In other words, at this size, the vast majority of light will be wasted inside the panel or in the light guide structure due to multiple reflections and absorptions. In summary, based on the different requirements for power consumption and brightness in practical applications, the most suitable size for the light-emitting area is the diameter of the first-level dark ring or the second-level dark ring.

[0110] When the focal length of a microlens is f, the radius of the dark ring of its Fraunhofer diffraction spot is ri = tan(θi)·f. Here, tan(θ1)·f is the radius of the first-order dark ring, and tan(θ2)·f is the radius of the second-order dark ring. Based on the above explanation, by setting the radius of the luminous area of ​​the circular light-emitting element to be between the radii of the first and second-order dark rings, the luminous area of ​​each light-emitting element can be utilized more efficiently, light loss reduced, and light extraction efficiency improved.

[0111] Finally, it should be noted that the display device provided in the embodiments of the present invention can be any electronic product with display function, including but not limited to the following categories: mobile phones, televisions, laptops, desktop monitors, tablet computers, digital cameras, smart bracelets, smart glasses, in-vehicle displays, medical devices, industrial control equipment, touch interactive terminals, VR devices, AR devices, etc. The embodiments of the present invention do not impose any special limitations on this.

[0112] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A display device, characterized in that, include: Multiple pixel repeating units arranged in an array; each pixel repeating unit includes at least two different colors of sub-pixels, and each of the sub-pixels includes at least one light-emitting element; In one pixel repetition unit, the sub-pixel includes a first sub-pixel, the light-emitting element includes a first light-emitting element, and the first sub-pixel includes m first light-emitting elements, where m≥2; Pixel circuit; The pixel circuit includes a first pixel circuit; the m first light-emitting elements corresponding to the first sub-pixel are electrically connected to the same first pixel circuit.

2. The display device according to claim 1, characterized in that, The display device includes: A pixel circuit setting layer, wherein the pixel circuit is located in the pixel circuit setting layer; The first insulating layer is located on one side of the pixel circuit setting layer; A light-emitting element layer is located on the side of the first insulating layer away from the pixel circuit setting layer; the light-emitting element is located in the light-emitting element layer; The first light-emitting element includes a first anode structure; in the first sub-pixel, m first anode structures corresponding to m first light-emitting elements are electrically connected; a first through hole is provided in the first insulating layer, and in the m first anode structures, at least one first anode structure is electrically connected to the first pixel circuit through the first through hole.

3. The display device according to claim 2, characterized in that, The first anode structure includes a first reflective anode, a second insulating layer, and a first transparent anode stacked sequentially. The first transparent anode is located on the side of the first reflective anode away from the pixel circuit layer. The first transparent anode covers the second insulating layer and is in direct contact with the sidewall of the first reflective anode. The display device further includes a first connecting portion; the first connecting portion is located between two adjacent first reflective anodes, and is integrally formed with the first transparent anode and connected to the two adjacent first transparent anodes.

4. The display device according to claim 2, characterized in that, The first anode structure includes a first reflective anode, a second insulating layer, and a first transparent anode stacked sequentially, wherein the first transparent anode is located on the side of the first reflective anode away from the pixel circuit layer; The display device further includes a second connecting portion, a third connecting portion, and a fourth connecting portion; the second connecting portion is located between two adjacent first reflective anodes, and is integrally formed with and connected to the two adjacent first reflective anodes; the third connecting portion is located between two adjacent second insulating layers, and is integrally formed with and connected to the two adjacent second insulating layers; the fourth connecting portion is located between two adjacent first transparent anodes, and is integrally formed with and connected to the two adjacent first transparent anodes; In the edge region of the first sub-pixel, the first transparent anode is in direct contact with the sidewall of the first reflective anode.

5. The display device according to claim 2, characterized in that, The first anode structure includes a first reflective anode, a second insulating layer, and a first transparent anode stacked sequentially, wherein the first transparent anode is located on the side of the first reflective anode away from the pixel circuit layer; The display device further includes a second connecting portion and a fifth connecting portion; the second connecting portion is located between two adjacent first reflective anodes, and is integrally formed with the first reflective anodes and connected to the two adjacent first reflective anodes; the fifth connecting portion is located between two adjacent second insulating layers, and is integrally formed with the first transparent anodes and connected to the two adjacent first transparent anodes; the fifth connecting portion is in contact with the second connecting portion.

6. The display device according to claim 2, characterized in that, The display device further includes a pixel defining layer, which is located on the side of the film layer where the first anode structure is located away from the pixel circuit setting layer; the pixel defining layer defines a light-emitting opening; the light-emitting opening includes a first light-emitting opening, which is configured to correspond one-to-one with the first anode structure, and at least a portion of the first anode structure is located within the first light-emitting opening; The first light-emitting element further includes a first light-emitting functional layer, at least a portion of which is located within the first light-emitting opening.

7. The display device according to claim 6, characterized in that, The pixel defining layer includes a first defining portion and a second defining portion. The first defining portion is located between adjacent light-emitting elements and fills the gap between adjacent anode structures. The second defining portion is located on the side of the first defining portion away from the pixel circuit setting layer. The second defining portion includes a first defining sub-part and a second defining sub-part. The second defining sub-part is located on the side of the first defining sub-part away from the pixel circuit setting layer. The orthographic projection of the first defining sub-part on the pixel circuit setting layer is located inside the orthographic projection of the second defining sub-part on the pixel circuit setting layer.

8. The display device according to claim 7, characterized in that, The pixel defining layer further includes a third defining portion disposed between the first defining portion and the second defining portion, the sidewall of the third defining portion including at least one step; the third defining portion includes a first surface and a second surface, the second surface being located on the side of the first surface away from the first defining portion, and the orthographic projection of the first defining portion on the pixel circuit setting layer being located inside the orthographic projection of the second surface on the pixel circuit setting layer.

9. The display device according to claim 1, characterized in that, In the pixel repeating unit, the sub-pixel further includes a second sub-pixel and a third sub-pixel, and the light-emitting element further includes a second light-emitting element and a third light-emitting element. The second sub-pixel includes n second light-emitting elements, and the third sub-pixel includes k third light-emitting elements, where n≤k≤m, m>n; n≥1; The pixel circuit further includes a second pixel circuit and a third pixel circuit, wherein the n second light-emitting elements corresponding to the second sub-pixel are electrically connected to the same second pixel circuit; and the k third light-emitting elements corresponding to the third sub-pixel are electrically connected to the same third pixel circuit.

10. The display device according to claim 9, characterized in that, The first sub-pixel is a blue sub-pixel, the second sub-pixel is a green sub-pixel, and the third sub-pixel is a red sub-pixel.

11. The display device according to claim 10, characterized in that, The pixel repeating unit includes two first sub-pixels, two third sub-pixels, and four second sub-pixels; In the display device: There exists a first sub-pixel located between four second sub-pixels; there exists a third sub-pixel located between four second sub-pixels; there exists a second sub-pixel located simultaneously between two first sub-pixels and two third sub-pixels; The center lines of the four second sub-pixels form a first quadrilateral, and the center lines of the two first sub-pixels and the two third sub-pixels form a second quadrilateral.

12. The display device according to claim 11, characterized in that, The first sub-pixel includes four first light-emitting elements, the second sub-pixel includes one second light-emitting element, and the third sub-pixel includes two third light-emitting elements; In the display device, a second light-emitting element is located between two third light-emitting elements and four first light-emitting elements, and the center line connecting the two third light-emitting elements and the four first light-emitting elements forms a first hexagon; The center lines connecting the four first light-emitting elements corresponding to the first sub-pixel form a rhombus; the first diagonal of the rhombus is parallel to the first direction, the second diagonal of the rhombus is parallel to the second direction, and the first direction and the second direction are orthogonal; the two third light-emitting elements corresponding to the third sub-pixel form a first line segment, and the first line segment is parallel to the second diagonal; or, The pixel repeating unit includes four light-emitting groups arranged side by side along the first direction. In the first light-emitting group, the third light-emitting element, the second light-emitting element, the first light-emitting element, and the second light-emitting element are arranged side by side in sequence along the second direction. In the second light-emitting group, the third light-emitting element and three first light-emitting elements are arranged side by side in sequence along the second direction. In the third light-emitting group, the first light-emitting element, the second light-emitting element, the third light-emitting element, and the second light-emitting element are arranged side by side in sequence along the second direction. In the fourth light-emitting group, three first light-emitting elements and one third light-emitting element are arranged side by side in sequence along the second direction. Along the first direction, the light-emitting elements in two adjacent light-emitting groups are staggered in the second direction.

13. The display device according to claim 11, characterized in that, The first sub-pixel includes three first light-emitting elements, the second sub-pixel includes one second light-emitting element, and the third sub-pixel includes one third light-emitting element; The center line connecting the three first light-emitting elements forms a first broken line, and the interior angle of the first broken line is an obtuse angle. The pixel repeating unit includes four light-emitting groups arranged side by side along a first direction. In the first light-emitting group, the third light-emitting element, the first light-emitting element, and the second light-emitting element are arranged side by side in sequence along a second direction. In the second light-emitting group, the second light-emitting element and two first light-emitting elements are arranged side by side in sequence along the second direction. In the third light-emitting group, two first light-emitting elements and one second light-emitting element are arranged side by side in sequence along the second direction. In the fourth light-emitting group, the first light-emitting element, the second light-emitting element, and the third light-emitting element are arranged side by side in sequence along the second direction. The second direction is orthogonal to the first direction. Along the first direction, the light-emitting elements in two adjacent light-emitting groups are staggered in the second direction.

14. The display device according to claim 11, characterized in that, The first sub-pixel includes two first light-emitting elements, the second sub-pixel includes one second light-emitting element, and the third sub-pixel includes two third light-emitting elements; In the display device, a second light-emitting element is located between the three third light-emitting elements and the three first light-emitting elements, and the center line connecting the three third light-emitting elements and the three first light-emitting elements forms a second hexagon; The pixel repeating unit includes four light-emitting groups arranged side by side along a first direction. In the first light-emitting group, the first light-emitting element, the second light-emitting element, and the third light-emitting element are arranged side by side in sequence along a second direction. In the second light-emitting group, the first light-emitting element, the third light-emitting element, and the second light-emitting element are arranged side by side in sequence along the second direction. In the third light-emitting group, the third light-emitting element, the second light-emitting element, and the first light-emitting element are arranged side by side in sequence along the second direction. In the fourth light-emitting group, the third light-emitting element, the first light-emitting element, and the second light-emitting element are arranged side by side in sequence along the second direction. The second direction is orthogonal to the first direction. Along the first direction, the light-emitting elements in two adjacent light-emitting groups are staggered in the second direction.

15. The display device according to claim 1, characterized in that, The display device further includes a pixel circuit layer and microlenses; The microlens is located on the side of the film layer where the light-emitting element is located that is away from the pixel circuit setting layer, and is arranged in a one-to-one correspondence with the light-emitting element; the orthographic projection of the microlens on the pixel circuit setting layer covers the orthographic projection of the light-emitting element on the pixel circuit setting layer.

16. The display device according to claim 15, characterized in that, The focal length of the microlens is f, and the light-emitting area of ​​the light-emitting element corresponding to the microlens is circular with a radius of R. The focal length and the radius satisfy the following relationship: tan(θ1)·f≤R≤tan(θ2)·f; in, ; ; λ is the center wavelength of the color of the sub-pixel corresponding to the light-emitting element, and D is the aperture of the microlens.

17. The display device according to claim 1, characterized in that, The shape of the light-emitting area of ​​the light-emitting element is polygonal.

18. The display device according to claim 1, characterized in that, The display device is a silicon-based organic light-emitting display device.

Images