Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a substrate and a plurality of pixel units, the pixel units are located on one side of the substrate, each pixel unit comprises a first sub-pixel area, a second sub-pixel area and a third sub-pixel area, the first sub-pixel area comprises at least one first light-emitting element, the second sub-pixel area comprises at least one second light-emitting element, and the third sub-pixel area comprises at least one second light-emitting element. The first sub-pixel area comprises at least one first light-emitting element, the second sub-pixel area comprises at least one second light-emitting element, the third sub-pixel area comprises at least one third light-emitting element, and the color of light emitted by the first sub-pixel area, the color of light emitted by the second sub-pixel area and the color of light emitted by the third sub-pixel area are different. At least two of the number of the first light-emitting elements, the number of the second light-emitting elements, and the number of the third light-emitting elements are not equal. The technical problem of how to improve the visual effect of the display panel in the prior art is solved.

Description

Technical Field

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

[0002] Micro LED (micro light-emitting diode) is a display technology that integrates millions of tiny LED pixels onto a single chip by miniaturizing and matrixing LEDs. Each Micro LED pixel can be controlled independently, and this self-luminous property gives it a significant advantage in display performance. However, the difference in light conversion efficiency of the quantum dot layer in Micro LED under different colors has caused Micro LED display technology to affect the visual effect.

[0003] Therefore, there is an urgent need for a display panel that can solve the technical problem of how to improve the visual effect of the display panel in the prior art. Summary of the invention

[0004] The main purpose of the present invention is to provide a display panel and a display device to solve the problem of how to improve the visual effect of the display panel in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a display panel is provided, comprising: a substrate; a plurality of pixel units, located on one side of the substrate, the pixel units respectively comprising a first sub-pixel region, a second sub-pixel region and a third sub-pixel region, the first sub-pixel region comprising at least one first light-emitting element, the second sub-pixel region comprising at least one second light-emitting element, the third sub-pixel region comprising at least one third light-emitting element, the color of light emitted by the first sub-pixel region, the color of light emitted by the second sub-pixel region and the color of light emitted by the third sub-pixel region are different, and in the same pixel unit, at least two of the number of the first light-emitting elements, the number of the second light-emitting elements and the number of the third light-emitting elements are not equal.

[0006] In order to achieve the above objective, according to one aspect of the present invention, a display device is provided, comprising: any one of the above display panels.

[0007] By applying the technical solution of the present invention, a display panel is provided. Due to the material limitation of the quantum dot layer in the microLED, its light conversion efficiency is different under different colors. The present application adjusts the number of light-emitting elements in sub-pixel areas of different colors according to the difference in colors of the first sub-pixel area, the second sub-pixel area, and the third sub-pixel area, and sets different numbers of light-emitting elements in the corresponding sub-pixel areas, which can alleviate the material limitation of the quantum dot layer, thereby improving the visual effect of the display panel, and solving the technical problem of how to improve the visual effect of the display panel in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0009] Figure 1 A schematic structural diagram of a display panel provided according to an embodiment of the present invention is shown;

[0010] Figure 2 A schematic structural diagram of a display panel provided according to an embodiment of the present invention is shown;

[0011] Figure 3 A schematic structural diagram of another display panel provided according to an embodiment of the present invention is shown;

[0012] Figure 4 A schematic structural diagram of another display panel provided according to an embodiment of the present invention is shown;

[0013] Figure 5 A schematic structural diagram of a display panel provided according to an embodiment of the present invention is shown;

[0014] Figure 6 A schematic structural diagram of a display panel provided according to an embodiment of the present invention is shown;

[0015] Figure 7 A schematic structural diagram of another display panel provided according to an embodiment of the present invention is shown;

[0016] Figure 8 A schematic structural diagram of a display device provided according to an embodiment of the present invention is shown.

[0017] The above drawings include the following reference numerals:

[0018] 10. Base substrate; 20. Pixel unit; 201. First sub-pixel region; 202. First light-emitting element; 203. Second sub-pixel region; 204. Second light-emitting element; 205. Third sub-pixel region; 206. Third light-emitting element; 30. Display region; 40. Edge region; 50. Array substrate layer; 501. Drive circuit; 60. Definition layer; 601. Block wall; 70. Black matrix; 80. Light conversion layer; 90. Filter layer; 100. Display panel. DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0021] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0022] As introduced in the background art, the transmittance of the display panel in the prior art is poor. In order to solve the above technical problems, the present application proposes a display panel and a display device.

[0023] Figure 1 is a schematic diagram of the structure of a display panel according to an embodiment of the present application. Figures 1 to 3 As shown, the display panel comprises:

[0024] Base substrate 10;

[0025] A plurality of pixel units 20 are located on one side of the base substrate 10. The pixel units 20 include a first sub-pixel region 201, a second sub-pixel region 203 and a third sub-pixel region 205. The present application does not limit the position of the first sub-pixel region 201, the second sub-pixel region 203 and the third sub-pixel region 205. The first sub-pixel region 201 includes at least one first light-emitting element 202, the second sub-pixel region 203 includes at least one second light-emitting element 204, and the third sub-pixel region 205 includes at least one third light-emitting element 206. The first light-emitting element 202, the second light-emitting element 204 and the third light-emitting element 206 can be light-emitting diodes, micro light-emitting diodes, organic light-emitting diodes and quantum dot light-emitting diodes. In one sub-pixel region, the number of the first light-emitting element 202, the second light-emitting element 204 and the third light-emitting element 206 can be one or more. The color of light emitted by the first sub-pixel region 201, the color of light emitted by the second sub-pixel region 203, and the color of light emitted by the third sub-pixel region 205 are different. For example, the colors of light emitted by the first sub-pixel region 201, the second sub-pixel region 203, and the third sub-pixel region 205 are three of blue, red, green, and white, respectively. In the same pixel unit 20, at least two of the number of the first light-emitting elements 202, the number of the second light-emitting elements 204, and the number of the third light-emitting elements 206 are not equal. That is to say, there are the following situations: in the first situation, in the same pixel unit 20, the number of the first light emitting elements 202 and the number of the second light emitting elements 204 are not equal; in the second situation, in the same pixel unit 20, the number of the first light emitting elements 202 and the number of the third light emitting elements 206 are not equal; in the third situation, in the same pixel unit 20, the number of the second light emitting elements 204 and the number of the third light emitting elements 206 are not equal; in the fourth situation, in the same pixel unit 20, the number of the first light emitting elements 202, the number of the second light emitting elements 204 and the number of the third light emitting elements 206 are not equal. The number of light emitting elements in the same sub-pixel in different pixel units may be the same or different.

[0026] Specifically, Figure 1 As shown, the number of the first light-emitting elements 202 in the first sub-pixel region 201 is three, the number of the second light-emitting elements 204 in the second sub-pixel region 203 is also three, and the number of the first light-emitting elements 202 is equal to the number of the second light-emitting elements 204. In practical applications, the number of the first light-emitting elements 202, the number of the second light-emitting elements 204, and the number of the third light-emitting elements 206 are not limited to the above Figure 1As shown, it can be set according to actual conditions, as long as at least two of the number of the first light-emitting elements 202, the number of the second light-emitting elements 204, and the number of the third light-emitting elements 206 are not equal.

[0027] In an embodiment of the present application, a display panel is provided. Due to material limitations, the light conversion efficiency of the quantum dot layer in the microLED is different under different colors. The present application adjusts the number of light-emitting elements in sub-pixel areas of different colors according to the differences in the colors of the first sub-pixel area, the second sub-pixel area, and the third sub-pixel area, and sets different numbers of light-emitting elements in the corresponding sub-pixel areas, which can alleviate the material limitations of the quantum dot layer, thereby improving the visual effect of the display panel, and solving the technical problem of how to improve the visual effect of the display panel in the prior art.

[0028] In another specific embodiment, the sub-pixel area includes a plurality of light-emitting elements, and the plurality of light-emitting elements are connected in parallel. Even if one of the plurality of light-emitting elements fails, the other light-emitting elements can also work normally, and will not affect the normal light emission of the sub-pixel area. Wherein, the sub-pixel area includes one of the first sub-pixel area, the second sub-pixel area and the third sub-pixel area, that is, the sub-pixel area refers to one of the first sub-pixel area, the second sub-pixel area and the third sub-pixel area. The light-emitting element includes one of the first light-emitting element, the second light-emitting element and the third light-emitting element. The first sub-pixel area includes a plurality of first light-emitting elements, or the second sub-pixel area includes a plurality of second light-emitting elements, or the third sub-pixel area includes a plurality of third light-emitting elements. The plurality of light-emitting elements are connected in parallel, and each light-emitting element can emit light by being powered on at the same time, which can improve the brightness of the sub-pixel area, and thus improve the display uniformity of the display panel.

[0029] In practical applications, multiple light-emitting elements connected in parallel can simplify the drive circuit design and improve the drive efficiency. The parallel design can reduce the voltage required for the drive circuit because after multiple light-emitting elements are connected in parallel, the total voltage remains unchanged while the current increases. The design of the drive circuit can be simplified and the complexity and cost of the circuit can be reduced. In addition, in the parallel circuit, the current of each light-emitting element is relatively small, which helps to reduce the current burden of the drive circuit. The parallel design can reduce the switching loss of the drive circuit. Since the current is divided in multiple paths, the current of each path is small, resulting in a reduction in the amount of stored charge, thereby shortening the switching delay time. This makes the drive circuit more efficient and faster to respond.

[0030] In another specific embodiment, Figure 2As shown, any two of the number of the first light-emitting elements 202, the number of the second light-emitting elements 204, and the number of the third light-emitting elements 206 are different. That is, the number of the first light-emitting elements 202, the number of the second light-emitting elements 204, and the number of the third light-emitting elements 206 are different. The number of light-emitting elements in the different sub-pixel areas is different, which can improve the visual effects of the sub-pixel areas of different colors, and further improve the display effect of the display panel.

[0031] Specifically, Figure 2 As shown, the number of the first light-emitting elements 202 in the first sub-pixel area 201 is three, the number of the second light-emitting elements 204 in the second sub-pixel area 203 is two, and the number of the third light-emitting element 206 in the third sub-pixel area 205 is one, that is, the number of the first light-emitting elements 202 is greater than the number of the second light-emitting elements 204, and greater than the number of the third light-emitting elements 206. In practical applications, the number of the first light-emitting elements 202, the number of the second light-emitting elements 204, and the number of the third light-emitting elements 206 are not limited to the above. Figure 2 It can be set according to actual conditions, as long as the number of the first light-emitting elements 202, the number of the second light-emitting elements 204 and the number of the third light-emitting elements 206 are not equal.

[0032] In order to further improve the differences in light conversion efficiency of quantum dot materials of different colors, such as Figure 3 As shown, the color of the light emitted by the first sub-pixel area 201 is red, the color of the light emitted by the second sub-pixel area 203 is green, and the color of the light emitted by the third sub-pixel area 205 is blue. In practical applications, the light conversion efficiency of the green quantum dot material is the highest, followed by the red quantum dot material, and the blue quantum dot material is the lowest. In the same pixel unit, the number of the third light-emitting elements 206 is greater than the number of the first light-emitting elements 202, that is, the number of light-emitting elements in the blue sub-pixel area is greater than the number of light-emitting elements in the red sub-pixel area, and the number of the first light-emitting elements 202 is greater than the number of the second light-emitting elements 204. In other words, the number of light-emitting elements in the red sub-pixel area is greater than the number of light-emitting elements in the green sub-pixel area. Due to the different light conversion efficiencies of quantum dot materials of different colors, the number of light-emitting elements in the green sub-pixel area with high light conversion efficiency is the least, which can reduce the number of light-emitting elements in the display panel, thereby further reducing the cost of the display panel.

[0033] In actual applications, in Micro LED technology, the light conversion efficiency of red quantum dots is lower than that of green quantum dots. For example, the conversion efficiency of red quantum dots may be only 60%-80% of that of green quantum dots. This results in more blue light being required to excite red quantum dots when displaying red, thereby increasing power consumption and reducing display efficiency. In addition, quantum dot materials of different colors have different stability. Red quantum dots are generally less stable and are easily affected by environmental factors (such as humidity and oxygen), resulting in a decrease in their light conversion efficiency performance.

[0034] In another specific embodiment, Figures 4 to 6 As shown, the display panel includes a display area 30 and an edge area 40 surrounding the display area 30. In practical applications, Micro LED has the advantages of high integration, flexible packaging methods, and modular splicing, and it is easier to achieve an extremely narrow frame or even no frame of the display panel. Therefore, the edge area 40 can be a non-display area 30, or it can be an edge portion of the display area 30. The second sub-pixel area 203, the first sub-pixel area 201, and the third sub-pixel are arranged along the direction from the display area 30 to the edge area 40. In other words, the third sub-pixel area 205 surrounds the first sub-pixel area 201, and the first sub-pixel area 201 surrounds the second sub-pixel area 203. The above-mentioned setting can further enhance the diversity of the arrangement of sub-pixel areas within the pixel unit in the display panel.

[0035] Specifically, the shapes of the first sub-pixel area, the second sub-pixel area and the third sub-pixel area can be circular, elliptical and polygonal, and this application does not impose any specific limitation, and those skilled in the art can set them according to actual conditions.

[0036] In another specific embodiment, Figure 4 As shown, the third sub-pixel region 205 is located at the outermost side of the display panel, the second sub-pixel region 203 is located at the innermost side of the display panel, and the first sub-pixel region 201 is located between the second sub-pixel region 203 and the third sub-pixel region 205. The first sub-pixel region 201 includes at least one first light-emitting element 202, the second sub-pixel region 203 includes at least one second light-emitting element 204, and the third sub-pixel region 205 includes at least one third light-emitting element 206. The distance between two adjacent sub-pixels can be as follows: Figure 4 As shown, there is no gap. There may be a gap. The above arrangement can further enhance the diversity of the arrangement of sub-pixel regions within the pixel unit in the display panel.

[0037] In another specific embodiment, Figure 5As shown, the shape of the second sub-pixel area 203 is circular, the shape of the first sub-pixel area 201 is annular, and the shape of the third sub-pixel area 205 is annular. The first sub-pixel area 201 includes at least one first light-emitting element 202, the second sub-pixel area 203 includes at least one second light-emitting element 204, and the third sub-pixel area 205 includes at least one third light-emitting element 206. The present application does not limit the radius of the circle and the ring, and those skilled in the art can set it according to actual conditions. Since the edge of the sub-pixel area is a curve, that is, the edge of the pixel unit is also a curve, compared with the square pixel in the prior art, its edge length is shorter, so that the aperture ratio can be increased, that is, the proportion of the effective light-emitting area to the total pixel area is higher. This allows more light to pass through the pixel unit, further improving the light efficiency and brightness of the display panel. In addition, the edge of the circular pixel unit is not easy to produce light scattering and reflection, which can reduce the loss of light at the edge of the pixel and further improve the brightness of the display panel.

[0038] In another specific embodiment, Figure 5 As shown, the center of the circle is the same as the center of the annular shape. That is, the first sub-pixel region 201, the second sub-pixel region 203 and the third sub-pixel region 205 are all axially symmetrical figures, and the symmetry axis is the same.

[0039] In order to further improve the display uniformity in the sub-pixel area, in another specific embodiment, as Figure 6 As shown, in the same sub-pixel region, the distances between two adjacent light-emitting elements are equal, that is, the light-emitting elements are evenly distributed in the sub-pixel region. The sub-pixel region is one of the first sub-pixel region 201, the second sub-pixel region 203, and the third sub-pixel region 205, and the light-emitting element is one of the first light-emitting element 202, the second light-emitting element 204, and the third light-emitting element 206.

[0040] Specifically, in the same sub-pixel area, the light-emitting elements overlapping with the central axis of the sub-pixel area are symmetrical about the central axis, and the light-emitting elements located on both sides of the central axis are symmetrically arranged about the central axis, and the central axis is parallel to the arrangement direction of the first sub-pixel, the second sub-pixel and the third sub-pixel.

[0041] In another specific embodiment, the area of ​​the first sub-pixel region, the area of ​​the second sub-pixel region, and the area of ​​the third sub-pixel region are equal. When the areas of the sub-pixel regions are equal, the light contributions of different colors of each pixel are the same, which can reduce the color deviation caused by the difference in the area of ​​the sub-pixels, make the color of the displayed picture more uniform, and further improve the visual effect of the display panel.

[0042] In another specific embodiment, the brightness of the sub-pixel area is positively correlated with the number of light-emitting elements connected in parallel, the sub-pixel area is one of the first sub-pixel area, the second sub-pixel area, and the third sub-pixel area, and the light-emitting element is one of the first light-emitting element, the second light-emitting element, and the third light-emitting element. By setting the light-emitting elements connected in parallel according to the brightness of the sub-pixel area, the energy consumption of the light-emitting elements can be further reduced.

[0043] Specifically, taking the example of each sub-pixel area containing n parallel light-emitting elements, when the brightness is within the first threshold, one light-emitting element is lit; when the brightness is between the first threshold and the second threshold, the second light-emitting element is lit; when the brightness is between the second threshold and the third threshold, the third light-emitting element is lit, and so on. When the brightness is greater than the n-1th threshold, the nth light-emitting element is lit.

[0044] In another specific embodiment, the brightness of the same sub-pixel region at different times is the same, and the corresponding light-emitting elements at at least two times are different. The above arrangement can avoid the problem of repeatedly driving the same light-emitting element at different times, which affects the life of the light-emitting element, and can further increase the life of the light-emitting element.

[0045] Specifically, taking the example of each sub-pixel area containing n parallel light-emitting elements, when the brightness requirement is two light-emitting elements, and the brightness requirements at different times are the same, at time t1, the first light-emitting element and the second light-emitting element are driven to emit light; at time t2, the third light-emitting element and the fourth light-emitting element are driven to emit light, and so on. The light-emitting elements driven at each time are not the same.

[0046] In another specific embodiment, the sub-pixel region includes at least two light-emitting elements connected in parallel, and in the same sub-pixel region, the ratio of the actual brightness of the light-emitting element to the maximum brightness of the light-emitting element is a predetermined ratio, and the sum of the predetermined ratios of the plurality of light-emitting elements is 1. The above arrangement can avoid the problem of repeatedly driving the same light-emitting element and affecting the life of the light-emitting element, and can further improve the life of the light-emitting element.

[0047] Specifically, taking the sub-pixel area including four light-emitting elements as an example, the light-emitting power requirement is 25%. In the solution of the prior art, among the four light-emitting elements, driving any one light-emitting element can meet the 25% power requirement. The above solution of the present application can drive two light-emitting elements, drive the brightness of one light-emitting element to 20% of the maximum brightness, 20% is the above predetermined ratio, drive the brightness of the other light-emitting element to 80% of the maximum brightness, 80% is the above predetermined ratio, and the sum of the predetermined ratios of the two light-emitting elements is 1.

[0048] In another specific embodiment, Figure 7As shown, the display panel further includes: an array substrate layer 50, which is located on one side of the base substrate, and the array substrate layer 50 includes a plurality of driving circuits 501, and one of the driving circuits 501 is used to drive one of the first light-emitting element 202, the second light-emitting element 204, and the third light-emitting element 206. Each light-emitting element can be independently controlled by the driving circuit 501, so that the brightness and color of each pixel can be accurately adjusted, which can further improve the contrast and color accuracy of the display panel.

[0049] In practical applications, since the current and voltage are dispersed to the driving circuit of each light-emitting element instead of being concentrated in a few driving circuits, the above arrangement helps to reduce heat concentration, thereby reducing the thermal stress of the light-emitting element and further extending its service life.

[0050] In another specific embodiment, Figure 7 As shown, the display panel further includes: a limiting layer 60, which is located on one side of the base substrate, and the limiting layer 60 includes a plurality of spaced retaining walls 601, and the first sub-pixel area 201, the second sub-pixel area 203, and the third sub-pixel area 205 are respectively located in the space between two adjacent retaining walls 601. Through the structural design of the limiting layer 60, the shape and size of each pixel unit can be accurately defined. This helps to improve the resolution and pixel density of the display panel, and also helps to improve the aperture ratio of the display panel, thereby further improving the brightness of the display panel.

[0051] Specifically, the above-mentioned limiting layer can be a pixel definition layer (Pixel Definition Layer, referred to as PDL), which separates adjacent pixel units to prevent the mixing of luminescent materials between different pixels, thereby avoiding color mixing. Ensure that each pixel can independently display the correct color. In the manufacturing process of the display panel, the pixel definition layer can also be used as a mask for depositing luminescent materials, which can simplify the deposition and positioning process of the material. For example, in the manufacture of OLED display panels, the openings in the pixel definition layer can guide the inkjet-printed ink to accurately fall within the specified pixel area. In addition, the pixel definition layer can also provide physical support for the pixels and enhance the structural stability of the entire display panel. Prevent the pixel structure from being deformed or damaged in subsequent processes, such as evaporation or packaging.

[0052] In a specific embodiment, Figure 7As shown, the display panel further includes: a plurality of black matrices 70, which are located on a side of the plurality of pixel units away from the substrate, with a gap between two adjacent black matrices 70, and the black matrices 70 are arranged one-to-one with the retaining wall 601; a light conversion layer 80, which is located on a side of the plurality of pixel units away from the substrate, and the light conversion layer 80 includes a plurality of light conversion parts, and the light conversion parts are located in the gap between two adjacent black matrices 70. The black matrix can absorb scattered light between pixel units, reduce light reflection and crosstalk, and further improve the contrast of the display. The light conversion layer can improve the light conversion efficiency, so that the display panel can achieve higher brightness at lower power consumption.

[0053] Specifically, the black matrix can enhance the visual depth and clarity of the image by absorbing stray light, making the displayed content more vivid and lively. In addition, the black matrix can also prevent light from different colors from interfering with each other, ensuring that the light emitted by each pixel is pure, thereby improving the purity of the color. In Micro LED display, the above-mentioned light conversion layer can be a quantum dot layer, which can convert blue light into red and green light. By precisely controlling the size and composition of quantum dots, light emission of different wavelengths can be achieved, thereby achieving full-color display.

[0054] In some embodiments, Figure 7 As shown, the display panel further includes: a filter layer 90, which is located on the side of the light conversion layer 80 away from the substrate. The filter layer 90 helps to improve the display quality of the display panel, and can reduce color deviation and improve color saturation by accurately controlling the mixing of colors, thereby further improving the clarity of the display panel.

[0055] Specifically, the green light layer contains red, green and blue filters, which correspond to each sub-pixel. Their function is to selectively absorb or transmit the light emitted by the backlight source to produce different colors. Each pixel unit consists of a red, a green and a blue filter. By adjusting the transmittance of these filters, different colors can be mixed.

[0056] In another typical embodiment of the present application, Figure 8 As shown, a display device is provided, comprising: any one of the above-mentioned display panels 100. The specific structure of the display panel 100 has been described in detail in the above-mentioned embodiments, and will not be repeated here. Figure 8 The display device shown is only for illustration purposes and may be Figure 8 The mobile phone shown may also be any electronic device with a display function, such as a car display device, a tablet computer, a notebook computer, an e-reader or a television.

[0057] Since the display device provided by the embodiment of the application includes the above-mentioned display panel, the quantum dot layer in the microLED has different light conversion efficiency under different colors due to material limitations. The present application adjusts the number of light-emitting elements in sub-pixel areas of different colors according to the different colors of the first sub-pixel area, the second sub-pixel area, and the third sub-pixel area, and sets different numbers of light-emitting elements in the corresponding sub-pixel areas, which can alleviate the material limitations of the quantum dot layer, thereby improving the visual effect of the display panel, and solving the technical problem of how to improve the visual effect of the display panel in the prior art.

[0058] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0059] 1) In the display panel of the present application, the quantum dot layer in the microLED has different light conversion efficiency under different colors due to material limitations. The present application adjusts the number of light-emitting elements in sub-pixel areas of different colors according to the different colors of the first sub-pixel area, the second sub-pixel area, and the third sub-pixel area, and sets different numbers of light-emitting elements in the corresponding sub-pixel areas, which can alleviate the material limitations of the quantum dot layer, thereby improving the visual effect of the display panel and solving the technical problem of how to improve the visual effect of the display panel in the prior art.

[0060] 2) The display device of the present application includes the above-mentioned display panel. Due to the material limitation of the quantum dot layer in the microLED, its light conversion efficiency is different under different colors. The present application adjusts the number of light-emitting elements in sub-pixel areas of different colors according to the different colors of the first sub-pixel area, the second sub-pixel area and the third sub-pixel area, and sets different numbers of light-emitting elements in the corresponding sub-pixel areas, which can alleviate the material limitation of the quantum dot layer, thereby improving the visual effect of the display panel, and solving the technical problem of how to improve the visual effect of the display panel in the prior art.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A display panel, characterized in that: include: substrate substrate; A plurality of pixel units are located on one side of the substrate, and the pixel units respectively include a first sub-pixel area, a second sub-pixel area and a third sub-pixel area, the first sub-pixel area includes at least one first light-emitting element, the second sub-pixel area includes at least one second light-emitting element, and the third sub-pixel area includes at least one third light-emitting element. The color of light emitted by the first sub-pixel area, the color of light emitted by the second sub-pixel area, and the color of light emitted by the third sub-pixel area are different. In the same pixel unit, at least two of the number of the first light-emitting elements, the number of the second light-emitting elements, and the number of the third light-emitting elements are not equal.

2. The display panel according to claim 1, characterized in that: The sub-pixel area includes multiple light-emitting elements, and the multiple light-emitting elements are connected in parallel, wherein the sub-pixel area includes one of the first sub-pixel area, the second sub-pixel area and the third sub-pixel area, and the light-emitting element includes one of the first light-emitting element, the second light-emitting element and the third light-emitting element.

3. The display panel according to claim 1, characterized in that: Any two of the number of the first light emitting elements, the number of the second light emitting elements, and the number of the third light emitting elements are different.

4. The display panel according to claim 1, characterized in that: The color of light emitted by the first sub-pixel area is red, the color of light emitted by the second sub-pixel area is green, and the color of light emitted by the third sub-pixel area is blue. In the same pixel unit, the number of the third light-emitting elements is greater than the number of the first light-emitting elements, and the number of the first light-emitting elements is greater than the number of the second light-emitting elements.

5. The display panel according to claim 4, characterized in that: The display panel includes a display area and an edge area surrounding the display area, and the second sub-pixel area, the first sub-pixel area, and the third sub-pixel area are arranged along a direction from the display area to the edge area.

6. The display panel according to claim 4, characterized in that: The third sub-pixel region is located at the outermost side of the display panel, the second sub-pixel region is located at the innermost side of the display panel, and the first sub-pixel region is located between the second sub-pixel region and the third sub-pixel region.

7. The display panel according to claim 6, characterized in that: The second sub-pixel region is in a circular shape, the first sub-pixel region is in a ring shape, and the third sub-pixel region is in a ring shape.

8. The display panel according to claim 7, characterized in that: The center of the circle is the same as the center of the annular shape.

9. The display panel according to claim 6, characterized in that: In the same sub-pixel area, the distances between two adjacent light-emitting elements are equal, the sub-pixel area is one of the first sub-pixel area, the second sub-pixel area and the third sub-pixel area, and the light-emitting element is one of the first light-emitting element, the second light-emitting element and the third light-emitting element.

10. The display panel according to claim 1, characterized in that: The area of ​​the first sub-pixel region, the area of ​​the second sub-pixel region, and the area of ​​the third sub-pixel region are equal.

11. The display panel according to claim 1, characterized in that: The brightness of the sub-pixel area is positively correlated with the number of light-emitting elements in parallel, the sub-pixel area is one of the first sub-pixel area, the second sub-pixel area and the third sub-pixel area, and the light-emitting element is one of the first light-emitting element, the second light-emitting element and the third light-emitting element.

12. The display panel according to claim 11, characterized in that: The brightness of the same sub-pixel region is the same at different times, and the corresponding light-emitting elements at at least two times are different.

13. The display panel according to claim 1, characterized in that: The sub-pixel region includes at least two light-emitting elements connected in parallel. In the same sub-pixel region, the ratio of the actual brightness of the light-emitting element to the maximum brightness of the light-emitting element is a predetermined ratio, and the sum of the predetermined ratios of multiple light-emitting elements is 1.

14. The display panel according to claim 1, characterized in that: The display panel further includes: The array substrate layer is located on one side of the base substrate, and the array substrate layer includes a plurality of driving circuits, wherein one of the driving circuits is used to drive one of the first light-emitting element, the second light-emitting element and the third light-emitting element.

15. The display panel according to claim 1, characterized in that: The display panel further includes: The limiting layer is located on one side of the base substrate, and the limiting layer includes a plurality of barrier walls with intervals, and the first sub-pixel region, the second sub-pixel region and the third sub-pixel region are respectively located in the intervals between two adjacent barrier walls.

16. The display panel according to claim 15, characterized in that: The display panel further includes: A plurality of black matrices are located on a side of the plurality of pixel units away from the base substrate, with a gap between two adjacent black matrices, and the black matrices are arranged in one-to-one correspondence with the retaining walls; The light conversion layer is located on a side of the plurality of pixel units away from the base substrate. The light conversion layer includes a plurality of light conversion parts. The light conversion parts are located in the interval between two adjacent black matrices.

17. The display panel according to claim 16, characterized in that: The display panel further includes: The filter layer is located on a side of the light conversion layer away from the substrate.

18. A display device, characterized in that: include: The display panel according to any one of claims 1 to 17.

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