Display panel and display device

Abstract

The present application relates to a display panel and a display device, wherein the display panel includes a light-emitting device layer and a color conversion layer. The light-emitting device layer includes a plurality of light sources distributed in an array. The color conversion layer is arranged on one side of the light-emitting surface of the light-emitting device layer, and the color conversion layer includes a retaining wall structure and a first conversion unit and a second conversion unit for converting the light emitted by the light source into a predetermined color light. The retaining wall structure encloses a first opening and a second opening, the first conversion unit is located at the first opening, and the second conversion unit is located at the second opening. The material of the first conversion unit includes a first conversion material, and the material of the second conversion unit includes a second conversion material, and the content of the first conversion material is greater than the content of the second conversion material. The embodiments of the present application can reduce the brightness difference between the color corresponding to the conversion material and the color corresponding to other conversion materials at different viewing angles, thereby solving the problem of color deviation of a single color in the display panel.

Description

Technical Field

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

[0002] Micro-LED display technology refers to a display technology that uses self-luminous micron-sized LEDs as light-emitting pixel units and assembles them on a driving panel to form a high-density LED array. Compared with the existing Organic Light-Emitting Diode (OLED) technology, Micro-LED has the advantages of higher brightness, better luminous efficiency and lower power consumption.

[0003] At present, in order to achieve color display of Micro-LED display panels, a color light-emitting element with a single primary color LED as the light source is usually used, and a color conversion film layer is set on the light-emitting side of the single primary color LED. The color conversion film layer is provided with colored quantum dots with colors. The colored quantum dots can respectively generate primary colors other than the above-mentioned single primary color under the irradiation and excitation of the single primary color LED, thereby achieving color display of the Micro LED display panel.

[0004] However, when the light source emitted by the single-primary color LED passes through the quantum dot area, the light intensity that can be excited is different due to the difference in the quantum dot materials, resulting in differences in the chromaticity of some colors of light at oblique viewing angles. Summary of the invention

[0005] The display panel and the display device provided in the embodiments of the present application can effectively improve the color shift problem.

[0006] On the one hand, according to an embodiment of the present application, a display panel is proposed, and the display panel includes a light-emitting device layer and a color conversion layer. The light-emitting device layer includes a plurality of light sources distributed in an array. The color conversion layer is arranged on the light-emitting surface side of the light-emitting device layer, and the color conversion layer includes a retaining wall structure and a first conversion unit and a second conversion unit for converting light emitted by the light source into light of a predetermined color, the retaining wall structure encloses a first opening and a second opening, the first conversion unit is located at the first opening, and the second conversion unit is located at the second opening, the material of the first conversion unit includes a first conversion material, the material of the second conversion unit includes a second conversion material, and the content of the first conversion material is greater than the content of the second conversion material.

[0007] On the other hand, an embodiment of the present application further provides a display device, comprising the display panel as described above.

[0008] According to the display panel and display device provided by the present application, by making the content of the first conversion material of the first conversion unit greater than the content of the second conversion material of the second conversion unit, the brightness of the color corresponding to the conversion material is increased, and the brightness difference between the color corresponding to the conversion material and the colors corresponding to other conversion materials at different viewing angles is reduced, thereby solving the problem of color cast of a single color in the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0010] Figure 1 A schematic diagram of a top view structure of a display panel provided in some embodiments of the present application;

[0011] Figure 2 for Figure 1 An enlarged schematic diagram of the middle Q;

[0012] Figure 3 for Figure 2 A schematic diagram of a cross-sectional structure of AA;

[0013] Figure 4 for Figure 2 Another cross-sectional structure diagram of AA;

[0014] Figure 5 for Figure 2 Another cross-sectional structure diagram of AA;

[0015] Figure 6 for Figure 1 Another enlarged schematic diagram of the middle Q;

[0016] Figure 7 for Figure 1 Another enlarged schematic diagram of the middle Q;

[0017] Figure 8 for Figure 1 Another enlarged schematic diagram of the middle Q;

[0018] Fig. 9 for Figure 6 A schematic diagram of a cross-sectional structure of the BB;

[0019] Fig.10 for Figure 6 Another cross-sectional structure diagram of the middle BB;

[0020] Fig.11 for Figure 1 Another enlarged schematic diagram of the middle Q;

[0021] Fig.12 for Fig.11A schematic diagram of a cross-sectional structure of CC.

[0022] Marking Description:

[0023] 100. Display panel;

[0024] 1. Light-emitting device layer; 11. Light source;

[0025] 2. color conversion layer; 21. retaining wall structure; 211. first sub-retaining wall structure; 2111. avoidance portion; 2111a. first surface; 211a. second surface; 22. first opening; 23. second opening; 24. first conversion unit; 25. second conversion unit; 26. color conversion auxiliary portion; 261. sub-portion; 27. third conversion unit; 271. third conversion material;

[0026] X, first direction; Y, light emitting direction of the display panel.

[0027] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0028] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0030] As a new type of display technology, Micro-LED has many advantages such as self-luminescence, high efficiency, long life, and ultra-high resolution. Micro-LED is a light-emitting chip array that has been thinned and miniaturized from traditional LEDs. It is generally defined as an LED chip with a size of less than 50um. For such a tiny LED chip, it is relatively complicated to achieve full color using the traditional RGB three-color array.

[0031] Quantum dots, also known as nanocrystals, are nanoparticles composed of II-VI or III-V elements. The particle size of quantum dots is generally between 1 and 10 nm, which can be used for smaller Micro Displays. Quantum dots also have electroluminescence and photoluminescence effects. They can emit fluorescence after being stimulated. The color of the luminescence is determined by the material and size. Therefore, the wavelength of different luminescence can be changed by adjusting the particle size of quantum dots. When the particle size of quantum dots is smaller, the luminescence color is more blue; when the quantum dots are larger, the luminescence color is more red; the chemical composition of quantum dots is diverse, and the luminescence color can cover the entire visible range from blue light to red light, which is very suitable for Micro Display applications.

[0032] However, the energy required to absorb by quantum dots of different colors in existing quantum dot materials is not the same, resulting in differences in the brightness of the colors that the same number of quantum dots can emit after absorbing the same amount of light.

[0033] In order to better understand this application, Figures 1 to 12 The embodiments of the present application are described in detail.

[0034] Figure 1 A schematic diagram of a top view structure of a display panel provided in some embodiments of the present application. Figure 2 for Figure 1 An enlarged schematic diagram of Q. Figure 3 for Figure 2 A schematic diagram of a cross-sectional structure of AA.

[0035] like Figures 1 to 3As shown, the embodiment of the present application proposes a display panel 100, which includes a light-emitting device layer 1 and a color conversion layer 2. The light-emitting device layer 1 includes a plurality of light sources 11 distributed in an array. The color conversion layer 2 is arranged on the light-emitting surface of the light-emitting device layer 1, and the color conversion layer 2 includes a retaining wall structure 21 and a first conversion unit 24 and a second conversion unit 25 for converting the light emitted by the light source 11 into a predetermined color light. The retaining wall structure 21 encloses a first opening 22 and a second opening 23. The first conversion unit 24 is located in the first opening 22, and the second conversion unit 25 is located in the second opening 23. The material of the first conversion unit 24 includes a first conversion material, and the material of the second conversion unit 25 includes a second conversion material, and the content of the first conversion material is greater than the content of the second conversion material.

[0036] like Figure 2 As shown, the retaining wall structure 21 encloses a plurality of openings arranged in an array. The retaining wall structure 21 may be made of a black light-absorbing material, or a combination of a black pigment or dye colorant and other materials. In some embodiments, the retaining wall structure 21 is made of materials such as titanium black, lignin black, composite oxide pigments such as iron or manganese, and combinations of the above pigments. By providing the retaining wall structure 21, crosstalk between light rays of different colors passing through adjacent openings can be avoided.

[0037] The first opening 22 can be one or more first openings 22; similarly, the second opening 23 can be one or more second openings 23. As long as the total content of the first conversion material in the first conversion unit 24 in the plurality of first openings 22 is greater than the total content of the second conversion material in the second conversion unit 25 in the plurality of second openings 23, it is sufficient.

[0038] In some examples, taking the first opening 22 as an example, the shape of the orthographic projection of the first opening 22 on the light-emitting device layer 1 includes any one or more of a circle, an annular ring, a rectangle, and a polygon. The shapes of the orthographic projections of the plurality of first openings 22 on the light-emitting device layer 1 may be the same figure, including any one of a circle, an annular ring, a rectangle, and a polygon. Of course, the shapes of the orthographic projections of the plurality of first openings 22 on the light-emitting device layer 1 may be different figures, including a variety of combinations of circles, annular rings, rectangles, and polygons, and the present application does not limit this.

[0039] The first conversion unit 24 and the second conversion unit 25 are distributed in the first opening 22 and the second opening 23 formed by the retaining wall structure 21. In some examples, the first conversion unit 24 and the second conversion unit 25 can emit light of a different color from the light source 11. Exemplarily, the color emitted by the light source 11 is blue, and the first conversion unit 24 can convert the light emitted by the blue light source in the light-emitting device layer 1 into light of other colors, such as red light and green light. In other examples, the first conversion unit 24 and the second conversion unit 25 can emit light of the same color as the light source 11. Exemplarily, the light-emitting device layer 1 includes a red light source, a green light source and a blue light source. The first conversion unit 24 is arranged corresponding to the red unit, and the first conversion unit 24 also emits red after absorbing the light of the light source 11. The second conversion unit 25 is arranged corresponding to the green unit, and the first conversion unit 24 also emits green after absorbing the light of the light source 11.

[0040] Optionally, the number of the first conversion unit 24 and the number of the second conversion unit 25 can both be multiple, and the multiple first conversion units 24 and the multiple second conversion units 25 are distributed in an array, and the first conversion units 24 and the second conversion units 25 are alternately and evenly distributed to form multiple pixel units.

[0041] In some examples, the content of the first conversion material of the first conversion unit 24 is greater than the content of the second conversion material of the second conversion unit 25. For example, the unit density of the first conversion material of the first conversion unit 24 is greater than the unit density of the second conversion material of the second conversion unit 25. And / or, the total volume of the first conversion material of the first conversion unit 24 is greater than the total volume of the second conversion material of the second conversion unit 25. And / or, the total amount of the first conversion material of the first conversion unit 24 is greater than the total amount of the second conversion material of the second conversion unit 25. And / or, the total mass of the first conversion material of the first conversion unit 24 is greater than the total mass of the second conversion material of the second conversion unit 25. In some other examples, the opening area of ​​the first opening 22 is greater than the opening area of ​​the second opening 23, so that the total amount of material of the first conversion unit 24 that can be set in the first opening 22 is greater than the total amount of material of the second conversion unit 25 that can be set in the second opening 23.

[0042] According to the display panel 100 and the display device provided by the present application, by making the content of the first conversion material of the first conversion unit 24 greater than the content of the second conversion material of the second conversion unit 25, the brightness of the color corresponding to the conversion material is increased, and the brightness difference between the color corresponding to the conversion material and the colors corresponding to other conversion materials at different viewing angles is reduced, thereby solving the problem of color cast of a single color in the display panel 100.

[0043] The display panel 100 provided in the embodiment of the present application can be applied to Micro-LED display technology, and of course, can also be applied to technical fields such as LCD display technology and OLED display technology. In order to better understand the display panel 100 in the embodiment of the present application, the following will be illustrated by taking the application in the field of Micro-LED display technology as an example. It can be understood that when the display panel 100 provided in the present application is applied to the field of Micro LED display technology, the color of the light emitted by the light source 11 in the light-emitting device layer 1 is blue. Optionally, the light-emitting device layer 1 that generates the emitted light may include a blue light micro-light-emitting diode chip, so that the color of the light emitted by the light source 11 in the light-emitting device layer 1 is blue.

[0044] As an optional implementation, the first conversion unit 24 is used to convert the light emitted by the light source 11 into red light.

[0045] Exemplarily, the first conversion unit 24 is a red conversion unit, and the first conversion material in the first conversion unit 24 includes at least red light quantum dots that can be excited by blue light to generate red light. The red conversion unit converts the corresponding blue light into red light to form a red sub-pixel.

[0046] Optionally, a quantum dot layer that can be excited to produce a corresponding color can be coated on each conversion unit. A red light quantum layer is provided in the red conversion unit; a green light quantum dot layer is provided in the green conversion unit; and a blue light quantum layer is provided in the blue conversion unit. Alternatively, a transparent adhesive layer with the same thickness as the red light quantum dot layer and the green light quantum dot layer is provided to maintain the original color of the blue light, form a blue sub-pixel, and thereby ensure that the display panel 100 can achieve full-color display. In addition, the quantum dot layer and the transparent adhesive layer with the same thickness make the surface of the color conversion layer 2 smoother, which is beneficial to the stability and reliability of its own structure.

[0047] Wherein, the red conversion unit includes a photoluminescent material for generating red light, for example, a material formed by mixing light quantum dots with photoresist or a material formed by mixing red organic photoluminescent material with photoresist. The green conversion unit includes a photoluminescent material for generating green light, for example, a material formed by mixing green light quantum dots with photoresist or a material formed by mixing green organic photoluminescent material with photoresist. Wherein, the photoresist is a negative photoresist, and the quantum dot layer is a quantum dot material that can form a specific excitation wavelength, including but not limited to a shell made of zinc sulfide (ZnS), which can be one or more of cadmium selenide (CdSe), cadmium telluride (CdTe), cadmium sulfide (CdS) and indium phosphide (InP), perovskite, and the quantum dot material also includes a scatterer, such as titanium oxide, or silicon dioxide, etc.

[0048] It should be noted that the ability of the photoluminescent material generating red to absorb the light output is stronger than the ability of the photoluminescent material generating other colors to absorb the light output, so that the red conversion unit and the green conversion unit with the same unit density absorb the same amount of light output, and the intensity of the red light excited by the red conversion unit is weaker than the intensity of the green light excited by the green conversion unit. When the first conversion material includes a photoluminescent material for generating red, the content of the first conversion material is greater than the content of the second conversion material, thereby compensating for the light intensity excited by the first conversion unit 24, so that the first conversion unit 24 and the second conversion unit 25 can excite the same light intensity, thereby reducing the brightness difference between the first conversion unit 24 and the second conversion unit 25 at different viewing angles, and solving the color shift problem of the display panel 100.

[0049] Figure 4 for Figure 2 Another cross-sectional structure diagram of AA.

[0050] like Figure 3 and Figure 4 As shown, as an optional implementation, the size of the first conversion unit 24 along the light emitting direction Y of the display panel 100 is greater than the size of the second conversion unit 25 along the light emitting direction Y of the display panel 100. Through this configuration, the content of the first conversion material in the first conversion unit 24 can be increased, thereby increasing the intensity of the light that can be excited by the first conversion unit 24.

[0051] like Figure 3 and Figure 4 As shown, as an optional embodiment, the retaining wall structure 21 includes a first sub-retaining wall structure 211, and the first sub-retaining wall structure 211 is arranged around the first opening 22. The first sub-retaining wall structure 211 includes an avoidance portion 2111, and the avoidance portion 2111 is located on the side of the first sub-retaining wall structure 211 facing away from the light-emitting device layer 1, and the avoidance portion 2111 is arranged around at least a portion of the first opening 22.

[0052] In some embodiments, the first opening 22, the second opening 23 and other openings are arranged in an array in the display panel 100, for example, the first opening 22 and the second opening 23 are arranged alternately along a preset direction, and in this case, part of the first sub-blocking wall structures 211 arranged around the first opening 22 participates in surrounding the second opening 23. Optionally, the first sub-blocking wall structures 211 participating in surrounding the second opening 23 and the first sub-blocking wall structures 211 only surrounding the first opening 22 may both have a size along the light emitting direction Y of the display panel 100 greater than that of the blocking wall structures 21 surrounding other openings.

[0053] like Figure 3As shown, the thickness dimension of the avoidance portion 2111 along the first opening 22 to the second opening 23 is the same as the thickness dimension of the remaining portion of the first sub-retaining wall structure 211 along the first opening 22 to the second opening 23, and the first conversion material can also be set in the opening enclosed by the avoidance portion 2111 to form a first conversion unit 24.

[0054] like Figure 4 The thickness of the avoidance portion 2111 along the first opening 22 to the second opening 23 is smaller than the thickness of the remaining portion of the first sub-retaining wall structure 211 along the first opening 22 to the second opening 23 , and the avoidance portion 2111 is disposed close to the first opening 22 .

[0055] It should be noted that the sum of the dimensions of the avoidance portion 2111 along the light emitting direction Y of the display panel 100 and the dimensions of the remaining portion of the first sub-blocking wall structure 211 along the light emitting direction Y of the display panel 100 is greater than the dimensions of the blocking wall structure 21 surrounding other openings along the light emitting direction Y of the display panel 100, thereby ensuring that the content of the first material is greater than the content of the second material.

[0056] Figure 5 for Figure 2 Another cross-sectional structure diagram of AA.

[0057] like Figure 5 As shown, as an optional embodiment, the avoidance portion 2111 includes a first surface 2111a facing the first opening 22, and along the first direction X, the distance between the two first surfaces 2111a located on opposite sides of the same first opening 22 gradually increases, and the first direction X is perpendicular to the light emitting direction Y of the display panel 100 and parallel to the light emitting surface of the display panel 100.

[0058] In some embodiments, taking the first opening 22 and the second opening 23 as an example, the first direction X is the direction from the first opening 22 to the second opening 23. In the first direction X, the avoidance portion 2111 located in the same first opening 22 has two opposite first surfaces 2111a, and the distance between the two first surfaces 2111a gradually increases, and in the light emitting direction Y of the display panel 100, the distance between the two first surfaces 2111a can also gradually increase. Of course, the arrangement of the avoidance portion 2111 can also present other structures, as long as the opening area enclosed by the avoidance portion 2111 is gradually increased along the light emitting direction Y of the display panel 100.

[0059] like Figure 5As shown, as an optional embodiment, the first sub-blocking wall structure 211 includes a second surface 211a facing the first opening 22, and the second surface 211a and the first surface 2111a are distributed successively along the light output direction Y, and the minimum angle α1 between the first surface 2111a and the second surface 211a satisfies, 100°≤α1≤160°.

[0060] Exemplarily, the value of the minimum angle α1 between the first surface 2111a and the second surface 211a includes 100°, 110°, 120°, 130°, 140°, 150° and 160°. It can be understood that the smaller the angle between the first surface 2111a and the second surface 211a, the greater the distance between the two first surfaces 2111a opposite to each other along the first direction X, the greater the content of the first conversion material, and the more light intensity can be added to the first conversion unit 24.

[0061] It should be noted that the second surface 211 a is arranged parallel to the light emitting direction Y of the display panel 100 , so as to ensure that the light emitted by the light source 11 will not be blocked by the second surface 211 a when passing through the first conversion unit 24 .

[0062] Please continue reading Figure 5 As an optional implementation, at least part of the first conversion unit 24 extends into the space enclosed by the avoidance portion 2111. This arrangement ensures that the content of the first conversion material in the first conversion unit 24 is greater than the content of the second conversion material in the second conversion unit 25. In addition, part of the first conversion unit 24 extends into the space enclosed by the avoidance portion 2111, which increases the luminous angle of the light excited by the first conversion unit 24 and further reduces the difference in the intensity of the light excited by the first conversion unit 24 and the light excited by other conversion units at different angles.

[0063] Figure 6 for Figure 1 Another enlarged schematic diagram of the middle Q. Figure 7 for Figure 1 Another enlarged schematic diagram of the middle Q. Figure 8 for Figure 1 Another enlarged schematic diagram of the middle Q. Fig. 9 for Figure 6 A schematic diagram of a cross-sectional structure of BB. Fig.10 for Figure 6 Another cross-sectional structure diagram of the BB.

[0064] like Figures 6 to 10As shown, as an optional embodiment, the color conversion layer 2 includes a color conversion auxiliary portion 26 , which is located on the side of the retaining wall structure 21 facing away from the light-emitting device layer 1 , and the color conversion auxiliary portion 26 is arranged around at least a portion of the first opening 22 .

[0065] In some embodiments, the color conversion auxiliary part 26 is arranged around the first opening 22. Of course, the color conversion auxiliary part 26 can also be arranged around the second opening 23. It should be noted that the color of the light excited by the color conversion auxiliary part 26 around the first opening 22 is different from the color of the light excited by the color conversion auxiliary part 26 around the second opening 23. Therefore, the color conversion auxiliary part 26 around the first opening 22 and the color conversion auxiliary part 26 around the second opening 23 need to be arranged at a distance to reduce the possibility of impure color of the excited light caused by the mutual blending of the color auxiliary parts that can excite different colors.

[0066] In some embodiments, the shape of the color conversion auxiliary part 26 on the orthographic projection of the light-emitting device layer 1 includes a circular ring, a semi-circular ring, a rectangle, and other polygons. Of course, the shape of the color conversion auxiliary part 26 on the orthographic projection of the light-emitting device layer 1 can also be the same as the shape of the retaining wall structure 21 enclosing the opening on the orthographic projection of the light-emitting device layer 1, as long as it can ensure that the light emitted from the conversion unit can enter the color conversion auxiliary part 26.

[0067] As an optional implementation, the color conversion auxiliary portion 26 is ring-shaped, or the color conversion auxiliary portion 26 includes a plurality of sub-portions 261 arranged at intervals around the first opening 22 .

[0068] like Figure 7 As shown, the color conversion auxiliary portion 26 is an integral structure, and the shape of the color conversion auxiliary portion 26 on the orthographic projection of the light-emitting device layer 1 is ring-shaped.

[0069] like Figure 8 As described above, the color conversion auxiliary portion 26 includes a plurality of sub-portions 261 , and the plurality of sub-portions 261 are arranged in an array around the first opening 22 .

[0070] It is understandable that the two arrangements can be applied to the display panel 100 separately, and the two arrangements can also be set simultaneously in the same display panel 100, which is not limited in the present application.

[0071] like Fig. 9 As shown, as an optional implementation, the color conversion auxiliary portion 26 is disposed close to the edge of the first opening 22 .

[0072] Exemplarily, the color conversion auxiliary portion 26 is spaced apart from the first conversion unit 24 in the first opening 22 . Alternatively, the edge of the color conversion auxiliary portion 26 is overlapped with the edge of the first conversion unit 24 in the first opening 22 .

[0073] like Fig.10 As shown, as an optional implementation, the orthographic projection of the color conversion auxiliary part 26 on the light emitting surface is partially overlapped with the orthographic projection of the first conversion unit 24 on the light emitting surface.

[0074] In some embodiments, a portion of the color conversion auxiliary portion 26 is located on the retaining wall structure 21 that encloses the opening, and another portion of the color conversion auxiliary portion 26 is located on the first conversion unit 24. It should be noted that at least part of the material in the area where the color conversion auxiliary portion 26 contacts the first conversion unit 24 is the same, thereby reducing the possibility of different materials influencing each other and causing impure light color.

[0075] As an optional embodiment, the material of the color conversion auxiliary part 26 is at least partially the same as the material of the first conversion unit 24. Exemplarily, the first conversion material in the first conversion unit 24 includes red light quantum dots, and the material included in the color conversion auxiliary part 26 is red light quantum dots. The light emitted by the light source 11 is converted into red light by the first conversion unit 24, and part of it enters the color conversion auxiliary part 26. The color conversion auxiliary part 26 enhances the light intensity of the red light to ensure the original color of the red light.

[0076] Fig.11 for Figure 1 Another enlarged schematic diagram of the middle Q. Fig.12 for Fig.11 A schematic diagram of a cross-sectional structure of CC.

[0077] like Fig.11 and Fig.12 As shown, as an optional embodiment, the size of the first conversion unit 24 along the first direction X is greater than the size of the second conversion unit 25 along the first direction X, and the first direction X is perpendicular to the light emitting direction Y of the display panel 100 and parallel to the light emitting surface of the display panel 100.

[0078] In some embodiments, the opening is the same size as the conversion unit. For example, the size of the first conversion unit 24 in the first opening 22 along the first direction X is larger than the size of the second conversion unit 25 in the second opening 23 along the first direction X. Then, the size of the first opening 22 along the first direction X is larger than the size of the second opening 23 along the first direction X. Thus, the opening area of ​​the first opening 22 is larger than the opening area of ​​the second opening 23, thereby ensuring that the content of the first conversion material in the first conversion unit 24 is greater than the content of the second conversion material in the second conversion unit 25.

[0079] It should be noted that the light-emitting area of ​​the pixel unit composed of the first conversion unit 24, the second conversion unit 25 and the third conversion unit 27 is relatively fixed, that is, the light-emitting areas of multiple pixel units are the same, wherein the size of the first conversion unit 24 along the first direction X is larger than the size of the second conversion unit 25 along the first direction X. In different pixel units, when the sizes of at least a part of the first conversion units 24 along the first direction X are different, the sizes of the second conversion unit 25 and the third conversion unit 27 in the first direction X will be compressed to ensure that the light-emitting areas between multiple pixel units are the same.

[0080] like Fig.12 As shown, as an optional implementation, the color conversion layer 2 further includes a third conversion unit 27, and the third conversion unit 27 includes a third conversion material 271, and the content of the third conversion material 271 is less than the content of the first conversion material.

[0081] In some embodiments, the color of light that can be excited by the third conversion material 271 included in the third conversion unit 27 is different from the color of light that can be excited by the first conversion material in the first conversion unit 24, and the color of light that can be excited by the third conversion unit 27 is different from the color of light that can be excited by the second conversion material in the second conversion unit 25. Exemplarily, the first conversion unit 24 can excite red light, the second conversion unit 25 can excite green light, and the third conversion unit 27 can excite blue light.

[0082] In some embodiments, the content of the third conversion material 271 may be the same as the content of the second conversion material; the content of the third conversion material 271 may be less than the content of the second conversion material; the content of the third conversion material 271 may be greater than the content of the second conversion material.

[0083] On the other hand, the embodiment of the present application further provides a display device, including any one of the display panels 100 described above. Since the display device provided by the embodiment of the present application includes the display panel 100 of any one of the above embodiments, the display device provided by the embodiment of the present application has the beneficial effects of the display panel 100 of any one of the above embodiments, which will not be described in detail here.

[0084] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0085] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention 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: A light emitting device layer, comprising a plurality of light sources distributed in an array; A color conversion layer is arranged on a light-emitting surface side of the light-emitting device layer, the color conversion layer comprises a retaining wall structure and a first conversion unit and a second conversion unit for converting the light emitted by the light source into light of a predetermined color, the retaining wall structure encloses a first opening and a second opening, the first conversion unit is located at the first opening, the second conversion unit is located at the second opening, the material of the first conversion unit comprises a first conversion material, the material of the second conversion unit comprises a second conversion material, and the content of the first conversion material is greater than the content of the second conversion material; Among them, the size of the first conversion unit along the light emitting direction of the display panel is larger than the size of the second conversion unit along the light emitting direction of the display panel; the blocking wall structure includes a first sub-blocking wall structure, the first sub-blocking wall structure is arranged around the first opening, the first sub-blocking wall structure includes a avoidance portion, the avoidance portion is located on the side of the first sub-blocking wall structure facing away from the light emitting device layer, and the avoidance portion is arranged around at least part of the first opening; the avoidance portion includes a first surface facing the first opening, and along the first direction, the distance between the two first surfaces located on opposite sides of the same first opening gradually increases, and the first direction is perpendicular to the light emitting direction of the display panel and parallel to the light emitting surface of the display panel.

2. The display panel according to claim 1, characterized in that: The first conversion unit is used to convert the light emitted by the light source into red light.

3. The display panel according to claim 1, characterized in that: The first sub-blocking wall structure includes a second surface facing the first opening, the second surface and the first surface are distributed successively along the light emitting direction, and the minimum angle between the first surface and the second surface is α1, and α1 satisfies 100°≤α1≤160°.

4. The display panel according to claim 1, characterized in that: At least a portion of the first conversion unit extends into a space enclosed by the avoidance portion.

5. The display panel according to claim 1, characterized in that: The color conversion layer includes a color conversion auxiliary portion, the color conversion auxiliary portion is located on a side of the retaining wall structure facing away from the light-emitting device layer, and the color conversion auxiliary portion is disposed around at least a portion of the first opening.

6. The display panel according to claim 5, characterized in that: The color conversion auxiliary portion is annular, or the color conversion auxiliary portion includes a plurality of sub-portions spaced apart around the first opening.

7. The display panel according to claim 6, characterized in that: The color conversion auxiliary portion is disposed close to an edge of the first opening.

8. The display panel according to claim 6, characterized in that: The orthographic projection of the color conversion auxiliary portion on the light exit surface is partially overlapped with the orthographic projection of the first conversion unit on the light exit surface.

9. The display panel according to claim 5, characterized in that: The material of the color conversion auxiliary portion is at least partially the same as that of the first conversion unit.

10. The display panel according to claim 1, characterized in that: The size of the first conversion unit along a first direction is greater than the size of the second conversion unit along the first direction. The first direction is perpendicular to the light emitting direction of the display panel and parallel to the light emitting surface of the display panel.

11. The display panel according to claim 1, characterized in that: The color conversion layer further includes a third conversion unit, the third conversion unit includes a third conversion material, and a content of the third conversion material is less than that of the first conversion material.

12. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 11.

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