Display panel and display device

Abstract

Provided in the embodiments of the present application are a display panel and a display device. The display panel comprises a substrate (10), a driving electrode layer (20), an anode layer (30), light-emitting layers (40), a cathode layer (60) and an encapsulation layer (70), which are stacked in sequence, wherein the light-emitting layers (40) are arranged in an array and at intervals on the anode layer (30), and a pixel definition layer (50) is provided between adjacent light-emitting layers (40); and a light conversion structure (500) is provided in each pixel definition layer (50), and each light conversion structure (500) is configured to convert external ambient light into light having the same color as light emitted by the light-emitting layer (40) adjacent to the light conversion structure (500), and to reflect the light emitted by the adjacent light-emitting layer (40). By means of the architectural innovation of the display panel, the display panel and the display device provided in the present application improve the aperture ratio of the display panel, thereby improving the brightness of the display panel; moreover, the reflected light is converted into light for enhancing brightness, thereby increasing the light utilization rate and improving the color saturation and precision of the display panel, and thus improving the display effect and quality of the display panel.

Description

Display panel and display device

[0001] The present application claims priority to the Chinese patent application No. 202411090668.X, filed on August 9, 2024 in the China Patent Office and entitled "Display panel and display device", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of display, in particular to a display panel and a display device. BACKGROUND

[0003] The aperture ratio of a display panel, also known as the light transmittance, refers to the ratio of the effective light transmittance area to the pixel unit area in a liquid crystal display, an organic light-emitting diode, etc. An OLED (Organic Light-Emitting Diode) pixel usually includes organic light-emitting layers, cathodes, anodes, and driving circuits, etc. These components occupy a certain space within the pixel, especially the driving elements such as thin film transistors, which do not emit light themselves, thus reducing the actual light transmittance or light emitting area. In order to protect the organic materials of the OLED from the invasion of oxygen and water vapor, a strict packaging process is required. This process may increase additional non-light-transmitting materials at the edge or certain specific areas, further reducing the aperture ratio and thus affecting the light utilization rate.

[0004] In summary, the current OLED display panel has the problems of low aperture ratio and low light utilization rate. TECHNICAL PROBLEM

[0005] The purpose of the present application is to provide a display panel and a display device to solve the technical problems of low aperture ratio and low light utilization rate of the existing display panel. TECHNICAL SOLUTION

[0006] The technical solution adopted by the present application is:

[0007] In a first aspect, the present application provides a display panel, comprising a substrate, a driving electrode layer, an anode layer, a light-emitting layer, a cathode layer and an encapsulation layer which are sequentially stacked;

[0008] The light-emitting layer array and is spaced apart from the anode layer, and a pixel definition layer is provided between adjacent light-emitting layers;

[0009] The pixel definition layer is provided with a light conversion structure, which is used to convert the ambient light into light of the same color as the light-emitting layer adjacent to the light conversion structure, and reflect the light emitted by the adjacent light-emitting layer.

[0010] In some embodiments, the light conversion structure comprises a reflector and an electrochromic layer, the electrochromic layer covering the reflector. The ambient light is emitted through the reflector in the light conversion structure, the direction is converted, and then the color is regulated through the electrochromic layer, so that the color of the light emitted finally is the same as the color of the light emitted by the adjacent light-emitting layer, which increases the light utilization rate and improves the display effect.

[0011] In some embodiments, a color resistance layer is further arranged between the reflector and the electrochromic layer, the color resistance layer covering the reflector, and the electrochromic layer covering the color resistance layer. The color saturation and accuracy of the display panel are improved by adding the color resistance layer.

[0012] In some embodiments, the color of the color resistance layer in the light conversion structure is the same as the color of the light-emitting layer closest to the light conversion structure. In this way, it can be ensured that the light emitted from the light conversion structure after passing through the color resistance layer and the electrochromic layer is consistent with the light emitted by the adjacent light-emitting layer, which improves the light utilization rate and reduces the light color mixing.

[0013] In some embodiments, the end of the light conversion structure close to the cathode layer is recessed towards the anode layer to form a first curved surface, so as to increase the ambient light incidence area. More ambient light can be irradiated into the light conversion structure for light recycling, thereby improving the light utilization rate and the aperture ratio.

[0014] In some embodiments, at least one side of the light conversion structure close to the light-emitting layer is recessed towards the middle part of the light conversion structure to form a second curved surface and / or a third curved surface. In this way, the light incidence area can be further improved. Different from the first curved surface, the second curved surface or the third curved surface is close to the light-emitting layer, so the light incidence area of the light emitted by the light-emitting layer can be increased, thereby being reflected, the light overlapping area of the adjacent light-emitting layer is further reduced, and the color saturation is improved.

[0015] In some embodiments, two light conversion structures are provided, and the two light conversion structures are arranged side by side along a first direction. In this way, each light conversion structure corresponds to a light-emitting layer. Since the light-emitting colors of adjacent light-emitting layers are usually red, green and blue, the colors of adjacent light-emitting layers are inconsistent. Therefore, by arranging two light conversion structures, the light of light-emitting layers with different colors can be effectively reflected, thereby reducing the mixing phenomenon of adjacent light-emitting layers and improving the display effect of the display panel.

[0016] In some embodiments, the anode layer comprises a first anode, a second anode and a third anode arranged at intervals.

[0017] The first anode is arranged corresponding to the light-emitting layer, and the second anode and the third anode are arranged corresponding to the light conversion structure respectively.

[0018] In some embodiments, the second anode and the cathode layer cooperate to control color change of one of the electrochromic layers.

[0019] The third anode and the cathode layer cooperate to control color change of another of the electrochromic layers.

[0020] In some embodiments, the shape of the light conversion structure includes at least one of a spherical shape, an ellipsoidal shape, a spindle shape, and an irregular shape.

[0021] In a second aspect, the embodiments of the present application provide a display device, comprising the display panel of the first aspect.

[0022] The display device provided by the present application comprises the display panel described above, which will improve the display quality of the display device to some extent, and the competitiveness and customer preference of the display device in the future will also be improved.

[0023] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or exemplary technical descriptions. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] FIG. 1 is a schematic diagram of the cross-sectional structure of the display panel provided by the first embodiment of the present application;

[0026] FIG. 2 is a schematic diagram of the cross-sectional structure of the display panel provided by the second embodiment of the present application;

[0027] FIG. 3 is a schematic diagram of the cross-sectional structure of the light conversion structure provided by the embodiments of the present application;

[0028] FIG. 4 is a schematic diagram of the cross-sectional structure of the display panel provided by the third embodiment of the present application;

[0029] FIG. 5 is a schematic diagram of the cross-sectional structure of the light conversion structure provided by the embodiments of the present application;

[0030] FIG. 6 is a schematic diagram of the cross-sectional structure of the display panel provided by the fourth embodiment of the present application;

[0031] FIG. 7 is a schematic cross-sectional view of the light conversion structure according to an embodiment of the present application. Embodiments of the present application

[0032] In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular sequences of acts, techniques, etc., in order to provide a thorough understanding of the present application. However, it will be apparent to those skilled in the art that the present application can be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known methods, devices, and circuits are omitted so as not to obscure the description of the present application with unnecessary detail.

[0033] It should also be understood that the term “and / or” as used herein, refers to any one of the associated listed items, or a combination of any of the associated listed items, and includes all possible combinations thereof.

[0034] It should be noted that when an element is referred to as being “fixed” or “set” on another element, it can be directly on the other element or indirectly on the other element, with one or more intervening elements. When an element is referred to as being “connected” or “coupled” to another element, it can be directly connected or coupled to the other element or indirectly connected or coupled to the other element, with one or more intervening elements.

[0035] It should be understood that the terms “length”, “width”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, and the like, specify relative positions or orientations based on the positions or orientations shown in the drawings, and are used only for convenience and ease of description and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application.

[0036] In addition, in the description of the embodiments of the present application and the appended claims, the terms “first”, “second”, “third”, etc. are used only to distinguish descriptions, and should not be understood as indicating or implying relative importance.

[0037] Reference to "some embodiments," "certain embodiments," "certain implementations," "some implementations," or the like, described in the present application specification, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. The appearances of the phrases "in some embodiments," "in certain embodiments," "in other embodiments," "in yet other embodiments," or the like, in various places in the specification are not necessarily all referring to the same embodiments, although they can. The terms "comprises," "comprising," "has," "having," "includes," "including," "contains," "containing," or the like, are open-ended, meaning including a wide variety of embodiments. The terms "a," "an," or "the" used in the context of the present application are to be construed to be open-ended, meaning there is a variety of embodiments. The terms "multiple" or "a plurality of" means two or more.

[0038] A first aspect of the embodiments of the present application, as shown in FIGS. 1-7, provides a display panel, including a substrate, a driving electrode layer, an anode layer 30, a light-emitting layer 40, a cathode layer 60, and an encapsulation layer 70 arranged in sequence.

[0039] The light-emitting layer 40 is arranged in an array and spaced apart from each other on the anode layer 30, and a pixel definition layer 50 is arranged between adjacent light-emitting layers 40.

[0040] The pixel definition layer 50 is provided with a light conversion structure 500, which is used to convert ambient light into light of the same color as the light-emitting layer 40 adjacent to the light conversion structure 500, and reflect light emitted by the adjacent light-emitting layer 40.

[0041] In the embodiments of the present application, the display panel is provided with the light conversion structure 500 in the pixel definition layer 50, which is used to convert ambient light into light emitted by the display panel (light emitted by the light-emitting layer 40), and convert the originally lightless area into light, thereby improving the utilization rate of light and increasing the aperture ratio of the display panel. In the prior art, the problem of color mixing of the display panel is improved by increasing the light shielding layer, but the light shielding layer reduces the aperture ratio of the display panel. The light conversion structure 500 of the embodiments of the present application can also reflect light emitted by the adjacent light-emitting layer 40, thereby reducing the overlapping area between the adjacent light-emitting layers 40, and eliminating the color mixing phenomenon, thereby improving the display effect of the display panel.

[0042] In applications, the substrate is located at the bottom layer of the display panel, serving as the supporting foundation for OLED devices. Common substrate materials include glass, plastic (for flexible OLEDs), or transparent oxides such as indium tin oxide. The driving electrode layer, i.e., the thin-film transistor layer, is responsible for controlling the switching and brightness of each pixel. As a switch, the thin-film transistor adjusts the current flowing through the pixel according to external signals, achieving precise pixel control. The anode layer 30, made of transparent conductive material (such as indium tin oxide), aims to inject positive charges (holes) into the light-emitting layer 40. The anode needs to have high light transmittance so that light can penetrate, while also having good electrical conductivity. The light-emitting layer 40 is composed of organic light-emitting materials, divided into red, green, and blue light-emitting regions. When the holes injected by the anode meet the electrons injected from the cathode in this layer and recombine, energy is released in the form of photons, i.e., light is generated. The cathode layer 60 is responsible for injecting negative charges (electrons). The cathode is usually made of low-work-function metal materials, such as aluminum-magnesium alloy, to facilitate electron injection and maintain the transparency of the overall structure. The encapsulation layer 70 is located at the top of the entire display panel structure, and its function is to protect the organic materials inside the OLED from the invasion of oxygen and moisture, as these external factors can cause the organic materials to degrade rapidly. The encapsulation layer 70 can be a multi-layer structure, including but not limited to glass cover plates, organic or inorganic thin films, etc., to ensure long-term stability and reliability.

[0043] The main function of the pixel definition layer 50 is to serve as a template or mask, ensuring accurate alignment of RGB (red, green, blue) organic light-emitting materials to each pixel position during deposition. This is crucial for achieving high-resolution displays, as it directly relates to the size, shape, and accuracy of the color of the pixels; preventing material mixing, as different colored light-emitting materials need to be deposited into corresponding pixel areas during OLED manufacturing, and the pixel definition layer 50 can effectively prevent cross-talk and mixing between different color materials, ensuring color purity; structural support: in addition to defining pixel positions, the pixel definition layer 50 can also serve as a physical support, helping to maintain the stability and flatness of the entire display panel structure, especially in complex structures with multiple thin film stacks.

[0044] In some embodiments, the light conversion structure 500 includes a reflector 501 and an electrochromic layer 503, and the electrochromic layer 503 covers the reflector 501. The ambient environment light is emitted through the reflector 501 in the light conversion structure 500, changes direction, and then passes through the electrochromic layer 503 for color regulation, so that the color of the finally emitted light is the same as that of the adjacent light-emitting layer 40, increasing the light utilization rate and improving the display effect.

[0045] In applications, the electrochromic layer 503 realizes controllable adjustment of material color or transparency through changes in optical properties under voltage driving. The electrochromic layer 503 is usually composed of electrochromic materials, which can be organic or inorganic compounds, such as transition metal oxides (such as tungsten oxide, nickel oxide), conductive polymers, etc. After applying voltage, the molecular or ionic structure of these materials changes, resulting in changes in the absorption spectrum, thereby causing color changes. The electrochromic reaction is reversible, which means that by changing the direction of the voltage, the material can return to the initial state or be converted to another color, thereby realizing dynamic regulation of color.

[0046] In some embodiments, a color resistance layer 502 is further provided between the reflector 501 and the electrochromic layer 503, the color resistance layer 502 covering the reflector 501, and the electrochromic layer 503 covering the color resistance layer 502. The color saturation and accuracy of the display panel are improved by adding the color resistance layer 502.

[0047] In applications, in an OLED display panel, each pixel is directly composed of red, green, and blue light-emitting materials, and no additional color resistance layer 502 is needed to filter color, because the light-emitting layer 40 itself is the source of color. By controlling the current flowing into each pixel, the light-emitting intensity can be adjusted to mix various colors. In the OLED display panel of the embodiments of the present application, the color resistance layer 502 is introduced to optimize the display effect, for enhancing color purity and improving color accuracy. In other embodiments, color filtering can also be performed on the basis of a white OLED display panel.

[0048] In some embodiments, the color of the color resistance layer 502 in the light conversion structure 500 is the same as the color of the light-emitting layer 40 closest to the light conversion structure 500. As shown in FIGS. 1 and 2, the light conversion structure 500 is used to reflect the light of the adjacent light-emitting layer 40 and convert the external ambient light into the light emitted by the adjacent light-emitting layer 40, so as to ensure that the light passing through the light conversion structure 500 is the same as the light emitted by the adjacent light-emitting layer 40, avoiding color mixing. Therefore, the color of the color resistance layer 502 is the same as the color of the light emitted by the light-emitting layer 40 closest to the light conversion structure 500. In this way, it can be ensured that the light emitted from the light conversion structure 500 after passing through the color resistance layer 502 and the electrochromic layer 503 is consistent with the light emitted by the adjacent light-emitting layer 40, improving the light utilization rate and reducing the color mixing of the light.

[0049] In some embodiments, as shown in FIG. 4 and FIG. 5, the light conversion structure 500 is recessed towards the anode layer 30 at one end close to the cathode layer 60 to form a first curved surface 504, so as to increase the area of the ambient light incident. Compared with the existing privacy display panel, a light shielding layer is added on the pixel definition layer 50 to achieve the effect of privacy, but the aperture ratio of the display panel is lost. Therefore, the present application is to make the end of the light conversion structure 500 close to the cathode layer 60 (i.e. one end of the display area) so that more ambient light can be incident into the light conversion structure 500 for light recycling, thereby improving the utilization of light and the aperture ratio.

[0050] In application, the light conversion structure 500 includes a reflector 501, a color resistance layer 502 and an electrochromic layer 503, and the shape of the reflector 501 includes a spherical shape, an ellipsoidal shape, a spindle shape and the like. One end of the reflector 501 is recessed towards the other end of the reflector 501, and the color resistance layer 502 and the electrochromic layer 503 are arranged according to the structure of the reflector 501, so that a first curved surface 504 is finally formed on the light conversion structure 500, the area of the ambient light incident is increased, and the utilization of light is improved.

[0051] In some embodiments, as shown in FIG. 6 and FIG. 7, the light conversion structure 500 is recessed towards the middle of the light conversion structure 500 at least one side close to the light emitting layer 40 to form a second curved surface 505 and / or a third curved surface 506. In this way, the light incident area can be further improved. The difference is that the two sides of the light conversion structure 500 are arranged close to the light emitting layer 40, so that the second curved surface 505 or the third curved surface 506 is formed close to the light emitting layer 40, so that the light incident area of the light emitted by the light emitting layer 40 can be increased, thereby being reflected, further reducing the light overlapping area of the adjacent light emitting layer 40, and improving the color saturation. In some embodiments, the light conversion structure 500 is recessed towards the middle of the light conversion structure 500 at one side close to the light emitting layer 40 to form a second curved surface 505. In other embodiments, the light conversion structure 500 is recessed towards the middle of the light conversion structure 500 at one side close to the light emitting layer 40 to form a third curved surface 506. In other embodiments, the light conversion structure 500 is recessed towards the middle of the light conversion structure 500 at both sides close to the light emitting layer 40 to form a second curved surface 505 and a third curved surface 506.

[0052] In some embodiments, as shown in FIG. 1 and FIG. 2, two light conversion structures 500 are provided, and the two light conversion structures 500 are arranged side by side along the first direction. In this way, each light conversion structure 500 is arranged corresponding to one light emitting layer 40. Since the light emitting colors of adjacent light emitting layers 40 are usually arranged in red, green and blue, the colors of adjacent light emitting layers 40 are inconsistent. Therefore, by providing two light conversion structures 500, the light of light emitting layers 40 of different colors can be effectively reflected, thereby reducing the mixing phenomenon of adjacent light emitting layers 40 and improving the display effect of the display panel. Moreover, the two light conversion structures 500 further increase the conversion of external ambient light, thereby improving the light utilization rate. In other embodiments, the light conversion structure 500 can also be provided in multiple numbers, including but not limited to 3, 4, 5, 6, etc.

[0053] In some embodiments, the end of the light conversion structure 500 is in direct contact with the anode layer 30 or the cathode layer 60. In other words, since the outermost layer of the light conversion structure 500 is the electrochromic layer 503, it is the electrochromic layer 503 that is in direct contact with the anode layer 30 or the cathode layer 60. Moreover, in applications, the cathode layer 60 is usually arranged to be transparent, so that the external ambient light can reduce the loss when entering the light conversion structure 500, without or as little as possible passing through the pixel definition layer 50. In other embodiments, the light conversion structure 500 is completely located inside the pixel definition layer 50, that is, the outer periphery of the light conversion structure 500 is directly in contact with the pixel definition layer 50.

[0054] In some embodiments, as shown in FIG. 2, the anode layer 30 includes a first anode, a second anode and a third anode arranged at intervals;

[0055] The first anode is arranged corresponding to the light emitting layer 40, and the second anode and the third anode are arranged corresponding to the light conversion structure 500, respectively.

[0056] In some embodiments, the second anode and the cathode layer 60 cooperate to control one electrochromic layer 503 to change color;

[0057] The third anode and the cathode layer 60 cooperate to control another electrochromic layer 503 to change color.

[0058] In the application, the electrochromic layer 503 of one light conversion structure 500 is controlled by the second anode, and the electrochromic layer 503 of another light conversion structure 500 is controlled by the third anode. The color of the electrochromic layer 503 is black (the material of the electrochromic layer 503 includes thiophene polymer), and the electrochromic layer 503 switches to a transparent state when the voltage between the second anode or the third anode and the cathode layer 60 is raised to 1 volt. The light of the adjacent light-emitting layer 40 is prone to color mixing when the pixel definition layer 50 is transparent, thereby reducing the display effect of the display panel. In the embodiment of the application, the light of the light-emitting layer 40 causing color mixing will pass through the electrochromic film layer, the color resistance layer 502, and the reflecting layer, and the reflecting layer will reflect the light causing color mixing to the display area, thereby improving the light utilization rate of the light-emitting layer 40 and improving the color mixing phenomenon of the display panel. When the external light is strong, the light of the external light also passes through the electrochromic film layer, the color resistance layer 502, and the reflecting layer, and the light of the color conversion is reflected to the display area (the display area at this time is the increased opening area), thereby improving the brightness and the aperture ratio of the display panel.

[0059] In some embodiments, the shape of the light conversion structure 500 includes at least one of a spherical shape, an ellipsoidal shape, a spindle shape, a cylindrical shape, an arc shape, and an irregular shape. That is, when there are multiple light conversion structures 500, the shapes can all be spherical, or a combination of spherical and ellipsoidal shapes. The embodiments of the application do not limit the shapes, and the pixel definition layer 50 can place the same shape of the light conversion structure 500 or different shapes of the light conversion structure 500, and the positions of the light conversion structure 500 can also be exchanged.

[0060] In the embodiment of the application, through the interaction between the electrochromic layer 503, the color resistance layer 502, and the reflecting body 501 in the light conversion structure 500, the light utilization rate of the light-emitting layer 40 can be improved (color mixing is improved), and the environment light can be converted into display light, that is, the aperture ratio of the display panel is improved, thereby improving the display effect of the display panel.

[0061] The second aspect of the embodiment of the application provides a display device including the display panel of the first aspect.

[0062] This will improve the display quality of the display device to some extent, and the competitiveness and customer preference of the display device in the future will also be improved.

[0063] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described or recorded in detail in a certain embodiment can be referred to the related description of other embodiments.

[0064] The above-described embodiments are only used to illustrate the technical solutions of the present application, but not limit them; although the foregoing embodiments of the present application are described in detail, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the embodiments of the present application.

Claims

1. A display panel, characterized by, The display panel comprises, in sequence, a substrate, a driving electrode layer, an anode layer, a light-emitting layer, a cathode layer, and an encapsulation layer. The light-emitting layer array is arranged in the anode layer, and a pixel definition layer is arranged between adjacent light-emitting layers. The pixel definition layer is provided with a light conversion structure, which is used to convert ambient light into light of the same color as the light-emitting layer adjacent to the light conversion structure, and reflect light emitted by the adjacent light-emitting layer.

2. The display panel of claim 1, wherein, The light conversion structure comprises a reflector and an electrochromic layer, and the electrochromic layer covers the reflector.

3. The display panel of claim 2, wherein, The reflector and the electrochromic layer are further provided with a color resistance layer, the color resistance layer covers the reflector, and the electrochromic layer covers the color resistance layer.

4. The display panel of claim 3, wherein, The color of the color resistance layer in the light conversion structure is the same as the color of the light-emitting layer closest to the light conversion structure.

5. The display panel of claim 1, wherein, The end of the light conversion structure close to the cathode layer is recessed towards the anode layer to form a first curved surface, thereby increasing the area of ambient light incidence.

6. The display panel of claim 5, wherein, The side of the light conversion structure close to the light-emitting layer is recessed towards the middle of the light conversion structure to form a second curved surface.

7. The display panel of claim 5, wherein, The other side of the light conversion structure close to the light-emitting layer is recessed towards the middle of the light conversion structure to form a third curved surface.

8. The display panel of claim 5, wherein, The two sides of the light conversion structure close to the light-emitting layer are recessed towards the middle of the light conversion structure to form a second curved surface and a third curved surface.

9. The display panel of any one of claims 2 to 8, wherein, The light conversion structure is provided with two, and the two light conversion structures are arranged side by side along a first direction.

10. The display panel of claim 9, wherein, The anode layer comprises a first anode, a second anode, and a third anode arranged at intervals. The first anode corresponds to the light-emitting layer, and the second anode and the third anode correspond to the light conversion structure, respectively.

11. The display panel of claim 8, wherein, The second anode and the cathode layer cooperate to control the color change of one electrochromic layer. The third anode and the cathode layer cooperate to control the color change of the other electrochromic layer.

12. The display panel of claim 1, wherein, The shape of the light conversion structure comprises at least one of a spherical shape, an ellipsoidal shape, a spindle shape, and an irregular shape.

13. A display device comprising: The display panel comprises the display panel according to any one of claims 1 to 12.

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