Display panel and display device

Abstract

The present application provides a display panel and a display device, wherein the display panel includes an array substrate and a light-emitting element layer, wherein the light-emitting element layer is formed on the array substrate and includes a red light-emitting unit, a green light-emitting unit and a blue light-emitting unit, wherein the area of ​​the green light-emitting unit and the area of ​​the blue light-emitting unit are both smaller than the area of ​​the red light-emitting unit; wherein the red light-emitting unit includes an excitation light source disposed on the array substrate and a photosensitive display module disposed on a side of the excitation light source away from the array substrate, wherein the orthographic projection of the photosensitive display module on the array substrate at least partially overlaps with the orthographic projection of the excitation light source on the array substrate, and the photosensitive display module emits red light under the excitation of the excitation light source; wherein the green light-emitting unit includes a green light source disposed on the array substrate, and the blue light-emitting unit includes a blue light source disposed on the array substrate. The display panel provided by the present application improves the display effect.

Description

Technical Field

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

[0002] Light-emitting diodes (LEDs) have the advantages of low cost, high luminous efficiency, energy saving and environmental protection, and are widely used in lighting, visible light communication, and luminous display scenarios.

[0003] Micro-LEDs are micronized traditional LEDs to form arrays with micron-level spacing to achieve ultra-high resolution, which can be used in the display field. Compared with traditional liquid crystal displays (LCDs) and organic light-emitting displays (OLEDs), Micro-LED displays have advantages such as long luminous life, high brightness, thin and light volume, and low power consumption. They have become the representative of the third generation of displays with high realism, interactive and personalized displays as their main features. Summary of the invention

[0004] Embodiments of the present application provide a display panel and a display device to improve the display effect of the display panel.

[0005] In a first aspect, an embodiment of the present application provides a display panel, including:

[0006] An array substrate;

[0007] A light emitting element layer is formed on the array substrate, and includes a red light emitting unit, a green light emitting unit and a blue light emitting unit, wherein the area of ​​the green light emitting unit and the area of ​​the blue light emitting unit are both smaller than the area of ​​the red light emitting unit;

[0008] The red light-emitting unit includes an excitation light source disposed on the array substrate and a photosensitive display module disposed on a side of the excitation light source away from the array substrate, the orthographic projection of the photosensitive display module on the array substrate at least partially overlaps with the orthographic projection of the excitation light source on the array substrate, and the photosensitive display module emits red light under the excitation of the excitation light source;

[0009] The green light emitting unit includes a green light source disposed on the array substrate, and the blue light emitting unit includes a blue light source disposed on the array substrate.

[0010] In a second aspect, an embodiment of the present application provides a display device, comprising the above-mentioned display panel.

[0011] In the display panel provided by the embodiment of the present application, the area of ​​the green light-emitting unit and the area of ​​the blue light-emitting unit are both smaller than the area of ​​the red light-emitting unit, and the red light is generated in the form of an excitation light source and a photosensitive display module to solve the problem that the light source material of the general red light has low luminous efficiency and insufficient brightness, resulting in the problem that the white light of the displayed picture is blue. In addition, the green light-emitting unit and the blue light-emitting unit are directly emitted by the green light source and the blue light source, which increases the color gamut size compared to the structure of the blue chip plus the quantum dot conversion layer in the prior art, thereby improving the delicate feeling of the displayed picture. Specifically, in the prior art, the green light is obtained by exciting the quantum dot conversion layer with blue light, but because the quantum dot conversion layer cannot convert the blue light 100%, the obtained green light must be doped with blue light, resulting in impure green light, low color saturation, and insufficient monochromaticity, and the color gamut finally formed is small, while the embodiment of the present application directly emits light from the green light source, which increases the color gamut. In summary, the display panel provided by the embodiment of the present application improves the display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The features, advantages, and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0013] Figure 1 It is a spectrum diagram of the display panel of the prior art using red chip, green chip and blue chip to directly emit light;

[0014] Figure 2 It is a spectrum diagram of the light emission of a display panel using a blue chip and a quantum dot conversion layer in the prior art;

[0015] Figure 3 is a structural schematic diagram of a display panel provided in an embodiment of the present application;

[0016] Figure 4 is a spectrum diagram formed by the red light-emitting unit, the green light-emitting unit, and the blue light-emitting unit of the display panel provided in an embodiment of the present application;

[0017] Figure 5 is another structural schematic diagram of a display panel provided in an embodiment of the present application;

[0018] Figure 6 is another structural schematic diagram of a display panel provided in an embodiment of the present application;

[0019] Figure 7 is another structural schematic diagram of a display panel provided in an embodiment of the present application;

[0020] Figure 8 is another structural schematic diagram of a display panel provided in an embodiment of the present application;

[0021] Fig. 9is another structural schematic diagram of a display panel provided in an embodiment of the present application;

[0022] Fig.10 It is a structural schematic diagram of a display device provided in an embodiment of the present application.

[0023] Reference numerals:

[0024] 1. Array substrate;

[0025] 2. Light-emitting element layer;

[0026] 21. Red light emitting unit; 211. Excitation light source; 212. Photosensitive display module; 213. Red light source; 22. Green light emitting unit; 221. Green light source; 23. Blue light emitting unit; 231. Blue light source; 23. First planarization layer; 24. Second planarization layer;

[0027] 3. Black matrix layer;

[0028] 31. first opening; 32. second opening; 33. third opening;

[0029] 4. Opposing substrate;

[0030] 5. Array shading layer;

[0031] 6. Opposing shading layer;

[0032] 7. Display device. DETAILED DESCRIPTION

[0033] The following detailed description and drawings of the embodiments of the present application are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0034] In the description of this application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating directions or positional relationships, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0036] Figure 1 This is a spectrum diagram of the display panel of the prior art using red chips, green chips and blue chips to directly emit light. Figure 2 It is a spectrum diagram of the light emitted by a display panel using a blue chip and a quantum dot conversion layer in the prior art.

[0037] The inventors noticed that currently Micro-LED mainly adopts two light-emitting structures. One is that the red chip, green chip, and blue chip directly emit light, such as Figure 1 As shown, from left to right are the relationships between the wavelengths and relative radiant fluxes of blue light, green light, and red light.

[0038] The other is a structure of a blue chip plus a quantum dot conversion layer, that is, red light and green light are generated by blue light stimulating the red light quantum dot layer and the green light quantum dot layer respectively. Figure 2 As shown, from left to right are the relationships between the wavelengths and relative radiant fluxes of blue light, green light, and red light.

[0039] The color points and color gamut values ​​formed by the above two structures are shown in Table 1 below.

[0040] Table 1

[0041] plan Rx R Gx Gy Bx By Wx Wy NTSC(1931) R(Chip)+G(Chip)+B(Chip) 0.693 0.306 0.202 0.738 0.140 0.044 0.184 0.319 116.2％ B(R-QD)+B(G-QD)+B Chip 0.648 0.293 0.173 0.638 0.147 0.032 0.294 0.315 93.8％

[0042] Among them, R(Chip)+G(Chip)+B(Chip) represents a display panel in the prior art that directly emits light from three-color chips (red chip, blue chip, green chip), and B(R-QD)+B(G-QD)+BChip represents a display panel in the prior art that excites the quantum dot conversion layer by a blue chip to form red and green light. In the 1931CIE-XYZ system, the Wx of standard white light is 0.295 and Wy is 0.315. It can be seen from the content in the table that in the first structure, the Wx of the white light formed after mixing is 0.184 and Wy is 0.184. Wx is small, and the value of 1-Wx-Wy is large, so the white light tends to be blue, so there is a problem of insufficient red light brightness and blue white light.

[0043] NTSC stands for color gamut, and its standard value is 100%. The larger the value is, the larger the color gamut is, and the better the display effect is. In the second structure, the color gamut is only 93.8%, which is less than 100%, so there is a problem of a small color gamut.

[0044] Based on the above considerations, the inventors have conducted in-depth research and designed a display panel to improve the display effect and increase the color gamut while ensuring the brightness of red light in the display panel.

[0045] In order to better understand this application, Figures 3 to 10 The embodiments of the present application are described.

[0046] Figure 3 It is a structural schematic diagram of a display panel provided in an embodiment of the present application.

[0047] See also Figure 3 The display panel provided in the embodiment of the present application includes an array substrate 1 and a light-emitting element layer 2, the light-emitting element layer 2 is formed on the array substrate 1, the light-emitting element layer 2 includes a red light-emitting unit 21, a green light-emitting unit 22 and a blue light-emitting unit 23, and the area of ​​the green light-emitting unit 22 and the area of ​​the blue light-emitting unit 23 are both smaller than the area of ​​the red light-emitting unit 21.

[0048] Among them, the red light-emitting unit 21 includes an excitation light source 211 arranged on the array substrate 1 and a photosensitive display module 212 arranged on the side of the excitation light source 211 away from the array substrate 1. The orthographic projection of the photosensitive display module 212 on the array substrate 1 at least partially overlaps with the orthographic projection of the excitation light source 211 on the array substrate 1. The photosensitive display module 212 emits red light under the excitation of the excitation light source 211.

[0049] The green light emitting unit 22 includes a green light source 221 disposed on the array substrate 1 , and the blue light emitting unit 23 includes a blue light source 231 disposed on the array substrate 1 .

[0050] Optionally, the photodisplay module 212 is a red quantum dot conversion layer. Of course, it can also be other photoluminescent materials, that is, materials that emit red light under the excitation of the excitation light source 211, and this application does not make too many restrictions here. Using the red quantum dot conversion layer as the photodisplay module 212 can produce red light with a smaller luminous spectrum range, that is, the proportion of red light doped with other color lights is small, ensuring the color saturation and monochromaticity of the red light.

[0051] Optionally, the excitation light source 211 is a light source emitting light with a wavelength shorter than that of red light, such as a light source emitting blue light. Of course, it can also be other light sources emitting light with a wavelength shorter than that of red light, such as a light source emitting green light, and this application does not make too many restrictions here.

[0052] In the above content, the orthographic projection of the photosensitive display module 212 on the array substrate 1 and the orthographic projection of the excitation light source 211 on the array substrate 1 at least partially overlap, which means that the orthographic projection of the photosensitive display module 212 on the array substrate 1 and the orthographic projection of the excitation light source 211 on the array substrate 1 can partially overlap or completely overlap.

[0053] In the display panel provided by the embodiment of the present application, the area of ​​the green light-emitting unit 22 and the area of ​​the blue light-emitting unit 23 are both smaller than the area of ​​the red light-emitting unit 21, and an excitation light source 211 is used to excite the photosensitive display module 212 to generate red light, so as to solve the problem that the light source material of general red light has low luminous efficiency and insufficient brightness, resulting in the white light being bluish. In addition, the green light-emitting unit 22 and the blue light-emitting unit 23 are both directly emitted by the green light source 221 and the blue light source 231, which improves the color gamut of the display panel and the delicacy of the displayed picture compared to the second light-emitting structure in the prior art. Specifically, in the prior art, green light is obtained by exciting the quantum dot conversion layer with blue light, but because the quantum dot conversion layer cannot convert blue light 100%, the obtained green light is inevitably doped with blue light, such as Figure 2 As shown, the green light has a large luminous spectrum range, is doped with blue light, has low color saturation, and lacks monochromaticity, so that the final color gamut is small. In the embodiment of the present application, the green light source 221 directly emits light, which improves the color gamut.

[0054] It should be noted that the area of ​​the green light-emitting unit 22 and the area of ​​the blue light-emitting unit 23 are both smaller than the area of ​​the red light-emitting unit 21. This is to avoid the problem that the light-emitting display module 212 cannot convert all the light emitted by the excitation light source 211 into red light, resulting in insufficient brightness of the red light. The area of ​​the red light-emitting unit 21 is increased to ensure the brightness of the red light.

[0055] In some optional embodiments, the red light emitting unit 21 further includes a red light source 213 disposed on the array substrate 1 .

[0056] The red light-emitting unit 21 also includes a red light source 213, which directly emits light, that is, the red light-emitting unit 21 includes an excitation light source 211 and a photosensitive display module 212 that are relatively arranged, and a red light source 213 that directly emits light. The light emitted by the red light-emitting unit 211 includes red light directly emitted by the red light source 213 and red light emitted by the photosensitive display module 212 excited by the excitation light source 211. The light emitted by the light-emitting element layer 2 includes red light directly emitted by the red light source 213, green light emitted by the green light source 221, and blue light emitted by the blue light source 231, thereby ensuring the color saturation of each color light, thereby forming a large color gamut.

[0057] Figure 4 It is a spectrum diagram formed by the red light-emitting unit, the green light-emitting unit and the blue light-emitting unit of the display panel provided in the embodiment of the present application.

[0058] See also Figure 4 , from left to right, represents the relationship between the wavelength and relative radiant flux of blue light, green light and red light. 1 represents the relationship between the wavelength and relative radiant flux of the red light generated by the excitation light source 211 after the photosensitive display module 212 is excited. 2 represents the relationship between the wavelength of the red light directly generated by the red light source 213 and the relative radiant flux, R 0 It represents the relationship between the wavelength and relative radiant flux of the red light generated by the red light emitting unit 21. It can be seen that the relative radiant flux generated by the red light emitting unit 21 is close to the relative radiant flux generated by the green light emitting unit 22 or even exceeds the green light emitting unit 22, so the brightness of the red light is greatly improved, ensuring the standardization of the white light.

[0059] Table 2 shows the color point and color gamut values ​​generated by two solutions in the prior art and the light-emitting element layer 2 of the present application.

[0060] Table 2

[0061] plan Rx R Gx Gy Bx By Wx Wy NTSC(1931) R(Chip)+G(Chip)+B(Chip) 0.693 0.306 0.202 0.738 0.140 0.044 0.184 0.319 116.2％ B(R-QD)+B(G-QD)+B Chip 0.648 0.293 0.173 0.638 0.147 0.032 0.294 0.315 93.8％ R(Chip)+R(B+RQD)+G(Chip)+B(Chip) 0.652 0.294 0.202 0.738 0.140 0.044 0.296 0.313 107.4％

[0062] In the above table, R(Chip)+R(B+RQD)+G(Chip)+B(Chip) represents the display panel of the embodiment of the present application, that is, the red light-emitting unit 21 includes an excitation light source 211 and a photosensitive display module 212 that are relatively arranged and a red light source 213 that directly emits light.

[0063] It can be seen from the above table that the red light-emitting unit 21 adopts the above-mentioned setting method, so that the color gamut reaches 107.4%, which is much higher than the color gamut of red light and green light generated by the structure of only using blue chips and quantum dot conversion layers, and exceeds 100%, and is even close to the color gamut of 116.2% generated by direct light emission of three-color chips (red chip, blue chip, green chip).

[0064] In summary, the red light emitting unit 21 includes the red light source 213, which can further improve the color gamut while ensuring the standardization of white light.

[0065] It should be noted that R(Chip)+R(B+RQD)+G(Chip)+B(Chip) in the table does not mean that the arrangement of the light-emitting units is the red light source 213 in the red light-emitting unit 21, the excitation light source 211 and the photosensitive display module 212 in the red light-emitting unit 21, the green light-emitting unit 22 and the blue light-emitting unit 23, but only represents the structure of the light-emitting units included in the display panel, and its arrangement is not limited.

[0066] Figure 5 This is another structural schematic diagram of a display panel provided in an embodiment of the present application.

[0067] See also Figure 5 In some optional embodiments, the display panel includes a plurality of pixels, each pixel includes a red light emitting unit 21, a green light emitting unit 22 and a blue light emitting unit 23, and the red light emitting unit 21 and the blue light emitting unit 23 are respectively arranged on both sides of the green light emitting unit 22.

[0068] The red light source 213 in the red light emitting unit 21 is disposed on the side of the excitation light source 211 away from the green light source 221. Figure 3 Alternatively, the red light source 213 in the red light emitting unit 21 is disposed on one side of the excitation light source 211 close to the green light source 221, as shown in FIG. Figure 5 shown.

[0069] As mentioned above, this pixel arrangement not only has standard white light and a high color gamut, but is also easy to manufacture.

[0070] In some other optional embodiments, the light emitting units are arranged as a red light emitting unit 21, a blue light emitting unit 23 and a green light emitting unit 22, that is, the red light emitting unit 21 and the green light emitting unit 22 are respectively arranged on both sides of the blue light emitting unit 23. Among them, the red light source 213 and the excitation light source 211 in the red light emitting unit 21 can be interchanged.

[0071] It should be noted that the arrangement of the light-emitting units is not restricted in this application. However, under the premise of having a red light-emitting unit 21, a green light-emitting unit 22 and a blue light-emitting unit 23 at the same time, the red light-emitting unit 21 needs to include adjacent excitation light sources 211 and red light sources 213. For example, the light-emitting units can also be arranged as green light-emitting units 22, red light-emitting units 21 and blue light-emitting units 23, wherein the red light source 213 and the excitation light source 211 in the red light-emitting unit 21 can be interchanged.

[0072] Figure 6 is another structural schematic diagram of a display panel provided in an embodiment of the present application, Figure 7 This is another structural schematic diagram of the display panel provided in the embodiment of the present application.

[0073] See also Figure 6 and Figure 7 In some other optional embodiments, the display panel includes a plurality of pixels, each pixel includes a red light-emitting unit 21, a green light-emitting unit 22 and a blue light-emitting unit 23, and in each pixel, the red light source 213 and the excitation light source 211 in the red light-emitting unit 21 are respectively arranged on both sides of the green light-emitting unit 22, and the blue light-emitting unit 23 is arranged on the side of the red light source 213 away from the green light-emitting unit 22, or the blue light-emitting unit 23 is arranged on the side of the excitation light source 211 away from the green light-emitting unit 22.

[0074] This pixel arrangement not only makes the white light standard and color gamut higher, but also because the red light source 213 and the excitation light source 211 are arranged on both sides of the green light emitting unit 22, the red light can be better mixed with other color lights, resulting in a better display effect.

[0075] like Figure 6 As shown, optionally, the arrangement of the light-emitting units is a red light source 213 in the red light-emitting unit 21, a green light-emitting unit 22, an excitation light source 211 in the red light-emitting unit 21, and a relatively arranged photosensitive display module 212 and a blue light-emitting unit 23. The red light source 213 and the excitation light source 211 in the red light-emitting unit 21 can be interchanged.

[0076] like Figure 7 As shown, optionally, the arrangement of the light-emitting units is a blue light-emitting unit 23, a red light source 213 in the red light-emitting unit 21, a green light-emitting unit 22, an excitation light source 211 in the red light-emitting unit 21, and a relatively arranged photosensitive display module 212. Among them, the red light source 213 and the excitation light source 211 in the red light-emitting unit 21 can be interchanged.

[0077] In some other optional embodiments, the display panel includes a plurality of pixels, each pixel includes a red light emitting unit 21, a green light emitting unit 22 and a blue light emitting unit 23, and in each pixel, the red light source 213 and the excitation light source 211 in the red light emitting unit 21 are respectively arranged on both sides of the blue light emitting unit 23, and the green light emitting unit 22 is arranged on the side of the red light source 213 away from the blue light emitting unit 23, or the green light emitting unit 22 is arranged on the side of the excitation light source 211 away from the blue light emitting unit 23. The red light source 213 and the excitation light source 211 in the red light emitting unit 21 can be interchanged.

[0078] This pixel arrangement not only makes the white light standard and color gamut higher, but also because the red light source 213 and the excitation light source 211 are arranged on both sides of the blue light emitting unit 23, the red light and other colored lights can be fully mixed, and the display effect is good.

[0079] In some other optional embodiments, the display panel includes a plurality of pixels, each pixel includes a red light emitting unit 21, a green light emitting unit 22, and a blue light emitting unit 23, and in each pixel, a red light source 213 and an excitation light source 211 in the red light emitting unit 21 are respectively arranged on both sides of the blue light emitting unit 23 and the green light emitting unit 22. The red light source 213 and the excitation light source 211 in the red light emitting unit 21 can be interchanged.

[0080] In some optional embodiments, in each pixel, the area of ​​the red light source 213 is not less than 1 / 4 of the total light-emitting area, where the total light-emitting area is the sum of the area of ​​the red light source 213, the area of ​​the excitation light source 211, the green light source 221 and the area of ​​the blue light source 231.

[0081] In the pixel, the red light emitting unit 21 includes a red light source 213, an excitation light source 211, and a photosensitive display module 212. The presence of the excitation light source 211 and the photosensitive display module 212 makes the white light formed by the pixel tend to be standard, avoiding the blue phenomenon, and the presence of the red light source 213 increases the color gamut as much as possible. The area of ​​the red light source 213 is set to not less than 1 / 4 of the total light emitting area, further ensuring the displayed color gamut.

[0082] Figure 8 This is another structural schematic diagram of the display panel provided in the embodiment of the present application.

[0083] In some optional embodiments, the display panel includes a plurality of pixels, each pixel includes a red light-emitting unit 21, a green light-emitting unit 22 and a blue light-emitting unit 23 arranged in sequence, the red light-emitting unit 21 includes an excitation light source 211 disposed on the array substrate 1 and a photosensitive display module 212 disposed on the side of the excitation light source 211 away from the array substrate 1, the orthographic projection of the photosensitive display module 212 on the array substrate 1 at least partially overlaps with the orthographic projection of the excitation light source 211 on the array substrate 1, and the photosensitive display module 212 emits red light under the excitation of the excitation light source 211.

[0084] The area of ​​the red light emitting unit 21 is equal to the area of ​​the excitation light source 211 .

[0085] The excitation light source 211 may be a light source that emits blue light.

[0086] In some optional embodiments, the red light-emitting unit 21, the green light-emitting unit 22 and the blue light-emitting unit 23 are arranged in the order of the pixel to facilitate processing and manufacturing.

[0087] In some other optional implementations, each pixel includes a green light emitting unit 22, a red light emitting unit 21 and a blue light emitting unit 23 arranged in sequence.

[0088] In some other optional implementations, each pixel includes a red light emitting unit 21, a blue light emitting unit 23 and a green light emitting unit 22 arranged in sequence.

[0089] In some optional embodiments, in each pixel, the area of ​​the excitation light source 211 accounts for 1 / 3-2 / 3 of the total luminous area, where the total luminous area is the sum of the area of ​​the excitation light source 211, the area of ​​the green light source 221 and the area of ​​the blue light source 231.

[0090] It should be noted that the area of ​​the photodisplay module 212 is proportional to the area of ​​the excitation light source 211. The larger the area of ​​the excitation light source 211, the larger the area of ​​the photodisplay module 212 directly facing it, and the more excitation light is converted into red light by the photodisplay module 212. Since the conversion efficiency of the photodisplay module 212 is limited when exciting the excitation light source 211, that is, the light emitted by the excitation light source 211 cannot be 100% converted into red light, the area of ​​the excitation light source 211 is increased while the area of ​​the overlapping part of the positive projection of the excitation light source 211 and the photodisplay module 212 is increased, so that more light emitted by the excitation light source 211 can be converted by the photodisplay module 212, and the emission area of ​​the red light is increased as much as possible, so as to ensure the standardization of the mixed white light.

[0091] Optionally, the orthographic projection of the photosensitive display module 212 on the array substrate 1 overlaps with the orthographic projection of the excitation light source 211 on the array substrate 1, and the area of ​​the photosensitive display module 212 is larger than the area of ​​the excitation light source 211. In this way, most of the light emitted by the excitation light source 211 can be incident on the photosensitive display module 212 for conversion, thereby increasing the conversion rate.

[0092] In some optional embodiments, the light-emitting element layer 2 also includes a black matrix layer 3, and the black matrix layer 3 is located in the same layer as the photosensitive display module 212. The black matrix layer 3 includes a first opening 31 corresponding to the red light-emitting unit 21, a second opening 32 corresponding to the green light-emitting unit 22, and a third opening 33 corresponding to the blue light-emitting unit 23. The orthographic projection of the first opening 31 on the array substrate 1 at least partially overlaps with the orthographic projection of the red light-emitting unit 21 on the array substrate 1, the orthographic projection of the second opening 32 on the array substrate 1 at least partially overlaps with the orthographic projection of the green light-emitting unit 22 on the array substrate 1, and the orthographic projection of the third opening 33 on the array substrate 1 at least partially overlaps with the orthographic projection of the blue light-emitting unit 23 on the array substrate 1.

[0093] A black matrix layer 3 is provided, and a first opening 31, a second opening 32 and a third opening 33 are formed for exposing the red light emitting unit 21, the green light emitting unit 22 and the blue light emitting unit 23, respectively, to prevent the light emitted by the excitation light source 211, the green light source 221 and the blue light source 231 from crosstalking with each other and affecting the display effect.

[0094] Optionally, the first openings 31 correspond to the number of light sources in the red light-emitting unit 21, the second openings 32 correspond to the number of light sources in the green light-emitting unit 22, and the third openings 33 correspond to the number of light sources in the blue light-emitting unit 23. Further optionally, the red light-emitting unit 21 includes an excitation light source 211 and a red light source 213, and the plurality of first openings 31 correspond to the excitation light sources 211 and the red light sources 213, respectively. That is, the number of the first openings 31 is equal to the sum of the number of the excitation light sources 211 and the number of the red light sources 213.

[0095] Further optionally, each pixel includes a red light emitting unit 21, a blue light emitting unit 23 and a green light emitting unit 22, and the red light emitting unit 21 includes an excitation light source 211 and a red light source 213. The number of the first openings 31 corresponding to each pixel is two, the number of the second openings 32 is one, and the number of the third openings 33 is one.

[0096] In some optional embodiments, the light emitting element layer 2 further includes a first planarization layer 23 , which is disposed on the array substrate 1 and covers the excitation light source 211 , the blue light source 231 and the green light source 221 , and the first planarization layer 23 is made of a light-transmitting material.

[0097] The first planarization layer 23 may include an organic layer such as acryl, polyimide (PI), or benzocyclobutene (BCB), and the first planarization layer 23 has a planarization function.

[0098] In some optional embodiments, the light emitting element layer 2 further includes a second planarization layer 24 formed in the first opening 31 , the second opening 32 and the third opening 33 , and the second planarization layer 24 is made of a light-transmitting material.

[0099] The second planarization layer 24 may include an organic layer such as acryl, polyimide (PI), or benzocyclobutene (BCB), and the second planarization layer 24 has a planarization function.

[0100] In some optional embodiments, the display panel further includes an opposing substrate 4 , which is disposed opposite to the array substrate 1 , and the photosensitive display module 212 is formed on a side of the opposing substrate 4 facing the array substrate 1 .

[0101] The black matrix layer 3 is also formed on the side of the counter substrate 4 facing the array substrate 1 .

[0102] Fig. 9 This is another structural schematic diagram of the display panel provided in the embodiment of the present application.

[0103] In some optional embodiments, the lower surface of the black matrix layer 3 has an opposing light shielding layer 6, and the array substrate 1 has an array light shielding layer 5. The array light shielding layer 5 separates the excitation light source 211, the green light source 221 and the blue light source 231, and the opposing light shielding layer 6 and the array light shielding layer 5 are opposite to each other.

[0104] The opposing light-shielding layer 6 and the array light-shielding layer 5 of this embodiment can be made of light-absorbing black material or reflective material, as long as light transmission can be avoided.

[0105] In this embodiment, the excitation light source 211 , the red light source 213 , the blue light source 231 , and the green light source 221 may be Micro-LEDs.

[0106] Fig.10 It is a structural schematic diagram of a display device provided in an embodiment of the present application.

[0107] See also Fig.10 , an embodiment of the present application further provides a display device 7, comprising the above-mentioned display panel.

[0108] The display device 7 may be a mobile phone, including the display panel described in any of the above embodiments. In addition, in this embodiment, the display device 7 may also be a watch, a computer, a television, etc., which is not limited in this application. Since the display device 7 provided in this embodiment includes the display panel described in the above embodiments, it also has the relevant advantages of the above display panel. The implementation of the display device 7 can refer to the above display panel embodiments, and the repeated parts will not be repeated.

[0109] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display panel, characterized in that: include: An array substrate; a light-emitting element layer, formed on the array substrate, comprising a red light-emitting unit, a green light-emitting unit, a blue light-emitting unit, a black matrix layer, a first planarization layer, and a second planarization layer, wherein the area of ​​the green light-emitting unit and the area of ​​the blue light-emitting unit are both smaller than the area of ​​the red light-emitting unit; The red light-emitting unit includes an excitation light source disposed on the array substrate and a photosensitive display module disposed on a side of the excitation light source away from the array substrate, the orthographic projection of the photosensitive display module on the array substrate at least partially overlaps with the orthographic projection of the excitation light source on the array substrate, and the photosensitive display module emits red light under the excitation of the excitation light source; Wherein, the green light emitting unit includes a green light source disposed on the array substrate, and the blue light emitting unit includes a blue light source disposed on the array substrate; Wherein, the black matrix layer and the photosensitive display module are located in the same layer, the black matrix layer includes a first opening corresponding to the red light-emitting unit, a second opening corresponding to the green light-emitting unit, and a third opening corresponding to the blue light-emitting unit, the orthographic projection of the first opening on the array substrate at least partially overlaps with the orthographic projection of the red light-emitting unit on the array substrate, the orthographic projection of the second opening on the array substrate at least partially overlaps with the orthographic projection of the green light-emitting unit on the array substrate, and the orthographic projection of the third opening on the array substrate at least partially overlaps with the orthographic projection of the blue light-emitting unit on the array substrate; Wherein, the first planarization layer is arranged on the array substrate and covers the excitation light source, the blue light source and the green light source, and the first planarization layer is made of a light-transmitting material; The second planarization layer is formed in the first opening, the second opening and the third opening, and the second planarization layer is made of a light-transmitting material.

2. The display panel according to claim 1, characterized in that: The red light emitting unit further includes a red light source disposed on the array substrate.

3. The display panel according to claim 2, characterized in that: The display panel includes a plurality of pixels, each of the pixels includes the red light emitting unit, the green light emitting unit and the blue light emitting unit, The red light emitting unit and the blue light emitting unit are respectively arranged on two sides of the green light emitting unit.

4. The display panel according to claim 2, characterized in that: The display panel includes a plurality of pixels, each of the pixels includes the red light emitting unit, the green light emitting unit and the blue light emitting unit, In the pixel, the red light source and the excitation light source in the red light emitting unit are respectively arranged on both sides of the green light emitting unit, the blue light emitting unit is arranged on the side of the red light source away from the green light emitting unit, or the blue light emitting unit is arranged on the side of the excitation light source away from the green light emitting unit.

5. The display panel according to claim 3 or 4, characterized in that: In the pixel, the area of ​​the red light source is not less than 1 / 4 of the total light emitting area, The total light-emitting area is the sum of the area of ​​the red light source, the area of ​​the excitation light source, the area of ​​the green light source and the area of ​​the blue light source.

6. The display panel according to claim 1, characterized in that: The wavelength of the light emitted by the excitation light source is shorter than the wavelength of red light.

7. The display panel according to claim 1, characterized in that: The display panel includes a plurality of pixels, and each pixel includes a red light emitting unit, a green light emitting unit, and a blue light emitting unit arranged in sequence.

8. The display panel according to claim 7, characterized in that: In each of the pixels, the area of ​​the excitation light source accounts for 1 / 3-2 / 3 of the total light-emitting area. The total light-emitting area is the sum of the area of ​​the excitation light source, the area of ​​the green light source and the area of ​​the blue light source.

9. The display panel according to claim 1, characterized in that: The device further comprises an opposing substrate, wherein the opposing substrate is arranged opposite to the array substrate, and the photosensitive display module is formed on a side of the opposing substrate facing the array substrate.

10. A display device, characterized in that: Comprising a display panel as described in any one of claims 1-9.

Images