Display panel and display device having the same

Abstract

The application discloses a display panel and a display device with the same. The display panel comprises a driving substrate, a plurality of light-emitting chips located on the same side of the driving substrate, each light-emitting chip comprising a light-emitting body and an electrode, the electrode being located on the side of the light-emitting body close to the driving substrate, an electrochromic layer in contact with at least one electrode, and a photochromic layer in contact with at least one light-emitting body. The display panel can avoid the ambient light being reflected to the display area by the components in the display panel, reduce the influence of the reflected ambient light on the display quality of the display panel, and solve the problem of low display quality of the display panel in the prior art.

Description

Technical Field

[0001] This application relates to the field of display technology, and more specifically, to a display panel and a display device having the same. Background Technology

[0002] Existing display panels are susceptible to ambient light, leading to a decrease in display quality. Furthermore, the light-emitting chips in these panels are prone to overheating, which increases the defect rate and power consumption. This overheating also reduces the luminous efficiency of the chips and causes color shift in the display panel. Summary of the Invention

[0003] This application provides a display panel and a display device having the same, to solve the problem of low display quality of display panels in the prior art.

[0004] According to one aspect of this application, a display panel is provided, comprising: a driving substrate; a plurality of light-emitting chips located on the same side of the driving substrate, each light-emitting chip including a light-emitting body and an electrode, the electrode being located on the side of the light-emitting body close to the driving substrate; an electrochromic layer in contact with at least one of the electrodes; and a photochromic layer in contact with at least one of the light-emitting bodies.

[0005] According to another aspect of this application, a display device is also provided, including a display panel as described above.

[0006] This application proposes a display panel in which an electrochromic layer is added in contact with the electrodes of at least one light-emitting chip, and a photochromic layer is added in contact with the light-emitting body of at least one light-emitting chip. Since the electrochromic layer can change color under the influence of an electric field when the light-emitting chip is working, it can be made to present a light-colored or transparent state when the light-emitting chip is not working, and to change color under the influence of an electric field when the light-emitting chip is working, presenting a dark or black reflective state. This allows ambient light from the outside world to be absorbed by the electrochromic layer when the light-emitting chip is working, thereby preventing ambient light from being reflected by the components of the display panel. By extending the electrochromic layer to the display area, the impact of reflected ambient light on the display quality of the display panel can be reduced. Furthermore, since the photochromic layer can also be illuminated and change color when the light-emitting chip is working, it can be made to appear light-colored or transparent when the light-emitting chip is not working, and to change color to appear dark or black when illuminated by emitted light during chip operation. This allows the electrochromic layer to absorb ambient light from the outside world in the display panel while the light-emitting chip is working, thus preventing ambient light from being reflected to the display area by the components in the display panel and reducing the impact of reflected ambient light on the display quality. Attached Figure Description

[0007] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0008] Figure 1 This is a partial cross-sectional structural diagram of a display panel according to an embodiment of this application;

[0009] Figure 2 yes Figure 1 The diagram shows the distribution of light-emitting chips in the display panel.

[0010] Figure 3 This is a partial cross-sectional structural diagram of another display panel provided according to an embodiment of this application;

[0011] Figure 4 yes Figure 3 The diagram shows the positional relationship between the light-emitting chip and the thermochromic layer in the display panel.

[0012] Figure 5 This is a schematic diagram of a display device provided in an embodiment of this application.

[0013] The above figures include the following reference numerals:

[0014] 1. Display device; 2. Non-display area; 3. Display area; 10. Driving substrate; 110. Substrate; 120. Driving chip; 20. Light-emitting chip; 201. First color light-emitting chip; 202. Second color light-emitting chip; 203. Third color light-emitting chip; 210. Light-emitting body; 220. Electrode; 30. Electrochromic layer; 40. Photochromic layer; 50. Connecting part; 60. Thermochromic layer; 70. Transmitting layer. Detailed Implementation

[0015] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0017] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0018] As mentioned in the background section, existing display panels are susceptible to the effects of ambient light, leading to a decrease in display quality. Furthermore, the light-emitting chips in the display panel are prone to overheating, which increases the defect rate and power consumption of the display panel. This overheating also reduces the luminous efficiency of the light-emitting chips and causes color shift in the display panel.

[0019] According to embodiments of this application, such as Figure 1 As shown, a display panel is provided, including a driving substrate 10; a plurality of light-emitting chips 20 located on the same side of the driving substrate 10, each light-emitting chip 20 including a light-emitting body 210 and an electrode 220, the electrode 220 being located on the side of the light-emitting body 210 close to the driving substrate 10; an electrochromic layer 30 in contact with at least one electrode 220; and a photochromic layer 40 in contact with at least one light-emitting body 210.

[0020] By adding an electrochromic layer 30 to contact the electrodes 220 of at least one light-emitting chip 20, and adding a photochromic layer 40 to contact the light-emitting body 210 of at least one light-emitting chip 20, the electrochromic layer 30 can change color under the influence of an electric field when the light-emitting chip 20 is working. This allows the electrochromic layer 30 to present a light-colored or transparent state when the light-emitting chip 20 is not working, and to change color under the influence of an electric field when the light-emitting chip 20 is working, presenting a dark or black reflective state. This ensures that when the light-emitting chip 20 is working, ambient light from the outside world in the display panel can be absorbed by the electrochromic layer 30, thereby preventing ambient light from being absorbed by the display panel. The reflection of light from the components in the panel to the display area can reduce the impact of reflected ambient light on the display quality of the display panel. At the same time, since the photochromic layer 40 can also be illuminated and change color when the light-emitting chip 20 is working, the electrochromic layer 30 can be made to appear in a light-colored or transparent state when the light-emitting chip 20 is not working, and to change color to appear in a dark or black state when the light-emitting chip 20 is working and is irradiated by emitted light. This allows the electrochromic layer 30 to absorb ambient light from the outside in the display panel when the light-emitting chip 20 is working, thereby preventing ambient light from being reflected to the display area by the components in the display panel and reducing the impact of reflected ambient light on the display quality of the display panel.

[0021] The above is the core idea of ​​this application. The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0022] In the display panel of this application embodiment, such as Figure 1 and Figure 2 As shown, multiple light-emitting chips 20 are disposed on the driving substrate 10. Light-emitting chips 20 of different colors constitute a group of light-emitting units, and multiple groups of light-emitting units can be arranged in an array. For example, as shown... Figure 2 As shown, each of the multiple light-emitting units includes a first color light-emitting chip 20, a second color light-emitting chip 20, and a third color light-emitting chip 20. The first color light-emitting chip 201, the second color light-emitting chip 202, and the third color light-emitting chip 203 in the multiple light-emitting units are distributed in the same direction matrix. The emitted light color of the first color light-emitting chip 201, the second color light-emitting chip 202, and the third color light-emitting chip 203 can be one of red, green, and blue, respectively.

[0023] In the display panel of this application embodiment, such as Figure 1As shown, the electrochromic layer 30 is in contact with the electrode 220 in at least one light-emitting chip 20. For the light-emitting chip 20, the light emitted from the front of the light-emitting body 210 is observed in the display area of ​​the display panel, thereby enabling the display panel to display the required color and brightness. Ambient light from the outside also enters the display panel. After being reflected by the internal structure, the ambient light may also be emitted from the display area of ​​the display panel, thus affecting the display quality of the display panel. In addition, there is also light emitted from the bottom of the light-emitting chip 20. In this embodiment, by reasonably setting the electrochromic layer 30, the light-emitting chip 20 can be affected by the electric field and change color when it is working, thereby absorbing ambient light from the outside, reducing the reflectivity of ambient light in the display panel, and improving the display quality of the display panel. At the same time, the electrochromic layer 30 can also absorb the light emitted from the bottom surface of the light-emitting chip 20, avoiding the influence of the emitted light.

[0024] In some alternative embodiments, at least a portion of the electrochromic layer 30 surrounds the outer periphery of the electrode 220 in the light-emitting chip 20. Specifically, as... Figure 1 As shown, the light-emitting chip 20 may include a light-emitting body 210 and an electrode 220 located below the light-emitting body 210. The electrode 220 is electrically connected to the driving substrate 10 to drive the corresponding light-emitting body 210 to emit light. Therefore, when the light-emitting chip 20 is working, an electric field is generated around the electrode 220. In this embodiment, at least a portion of the electrochromic layer 30 can be placed around the electrode 220 of the light-emitting chip 20 to place the electrochromic layer 30 in the electric field, so that the electrochromic layer 30 changes color under the action of the electric field, thereby achieving the absorption of ambient light from the outside and light emitted from the bottom surface of the light-emitting chip 20.

[0025] like Figure 1 As shown, the display panel provided in this application embodiment may further include multiple connecting portions 50. The connecting portions 50 are located between the driving substrate 10 and the light-emitting chip 20, and electrically connect multiple electrodes 220 to the driving substrate 10. At least a portion of the electrochromic layer 30 surrounds the electrodes 220 and the outer periphery of the connecting portions 50. Specifically, by electrically connecting the light-emitting chip 20 and the driving substrate 10 through the connecting portions 50, an electric field is generated around the electrodes 220 of the connecting portions 50 and the light-emitting chip 20, thereby surrounding at least a portion of the electrochromic layer 30 around the electrodes 220 and the outer periphery of the connecting portions 50. This allows more electrochromic layers 30 to be placed in the electric field to achieve color change, and further, the electrochromic layer 30 absorbs more ambient light from the outside and light emitted from the bottom surface of the light-emitting chip 20.

[0026] For example, such as Figure 1As shown, the driving substrate 10 includes a plurality of driving chips 120, and the connection portion 50 can be a bonding structure that connects the light-emitting chip 20 and the driving chip 120. Specifically, the light-emitting chip 20 can be transferred to the surface of the driving substrate 10 using a flip-chip process, and the light-emitting chip 20 and the driving chip 120 can be connected using a bonding process to obtain the aforementioned bonding structure between the light-emitting chip 20 and the driving chip 120. The material and forming process of the connection portion 50 are not specifically limited in this embodiment.

[0027] In some alternative implementations, such as Figure 1 As shown, the driving substrate 10 includes a substrate 110 and a plurality of driving chips 120 located on a first side of the substrate 110. The first side is the side of the substrate 110 closest to the light-emitting chip 20. The plurality of driving chips 120 correspond one-to-one with the plurality of light-emitting chips 20. Each driving chip 120 is electrically connected to its corresponding light-emitting chip 20 via a connection portion 50. The area between each driving chip 120 and its corresponding light-emitting chip 20, excluding the connection portion 50, is a spacing region. At least a portion of the electrochromic layer 30 is filled in the spacing region. For example, the driving chip 120 is a thin-film transistor (TFT).

[0028] In the above optional embodiments, the connection between the driver chip 120 and the light-emitting chip 20 is achieved through the connection portion 50 located between the driver chip 120 and the light-emitting chip 20, thereby creating a gap area between the driver chip 120 and the light-emitting chip 20 excluding the connection portion 50. At this time, at least a portion of the electrochromic layer 30 can be completely filled in the aforementioned gap area, so that more of the electrochromic layer 30 is located in the electric field generated by the electrode 220 of the light-emitting chip 20 and the connection portion 50. Thus, the electrochromic layer 30 changes color under the action of the electric field to achieve color regulation of ambient light and the light-emitting chip 20. Absorption of excess emitted light; and, in the existing display panel manufacturing process, a large number of light-emitting chips 20 can be placed on the driving substrate 10 through a mass transfer process. Since the number of transferred light-emitting chips 20 is large, some light-emitting chips 20 may have weak connections with the driving substrate 10. However, in this embodiment, by filling the electrochromic layer 30 between the driving chip 120 and the light-emitting chip 20, the strength of the connection between the driving chip 120 and the light-emitting chip 20 can be increased, thereby improving the stability and reliability of the light-emitting chip 20 placement.

[0029] In the above optional implementations, such as Figure 1As shown, the driving chip 120 has a first sidewall in a direction perpendicular to the driving substrate 10, and a portion of the electrochromic layer 30 can cover the first sidewall. Specifically, in this embodiment, the electrochromic layer 30 can simultaneously surround the electrode 220, the connection portion 50, and the outer periphery of the driving chip 120 of the light-emitting chip 20. This arrangement can increase the electrochromic layer 30 located in the electric field when the light-emitting chip 20 is working, and there is no need to remove the electrochromic layer 30 on the outer periphery of the driving chip 120 during the process, thereby simplifying the process.

[0030] In some alternative implementations, such as Figure 1 As shown, the electrode 220 in the light-emitting chip 20 has a contact surface that is away from the light-emitting body 210. The minimum vertical distance between the contact surface and the driving substrate 10 is less than the vertical distance between the highest point of the electrochromic layer 30 and the driving substrate 10.

[0031] In the above optional embodiments, the electrode 220 in the light-emitting chip 20 has a contact surface facing away from the light-emitting body 210. The minimum vertical distance between the contact surface and the driving substrate 10 means the maximum setting height of the bottom surface of the electrode 220. The vertical distance between the highest point of the electrochromic layer 30 and the driving substrate 10 means the maximum setting height of the electrochromic layer 30. In this embodiment, by making the maximum setting height of the bottom surface of the electrode 220 less than the maximum setting height of the electrochromic layer 30, at least a portion of the electrochromic layer 30 is positioned higher than the bottom surface of the electrode 220. This avoids the electric field effect on the electrochromic layer 30 caused by too many electrochromic layers 30 located below the electrode 220 being weak, thus ensuring the function of the electrochromic layer 30 applied in this embodiment.

[0032] In the above-described display panel of this application embodiment, the electrochromic layer 30 that contacts different light-emitting chips 20 can independently include an anodic electrochromic material or a cathodic electrochromic material. The anodic electrochromic material and the cathodic electrochromic material have oxidized and reduced states respectively under the action of the same electric field.

[0033] Specifically, when the light-emitting chip 20 is in operation, an electric field is generated around the electrode 220. Under the influence of the electric field, the anodic electrochromic material gains electrons and is in a low valence state (i.e., reduced state). In the reduced state, the electrochromic layer 30 with the anodic electrochromic material can exhibit a light-colored or transparent light-transmitting state. Under the influence of the electric field, the cathode electrochromic material loses electrons and is in a high valence state (i.e., oxidized state). In the oxidized state, the electrochromic layer 30 with the cathode electrochromic material can also exhibit a light-colored or transparent light-transmitting state. When the light-emitting chip 20 is not in operation... In this state, no electric field is generated around electrode 220. The anodic electrochromic material loses electrons and changes color, so that the electrochromic layer 30 with anodic electrochromic material can present a dark or black reflective state. The cathode electrochromic material gains electrons and undergoes a reduction reaction, so that it can also present a dark or black reflective state. The aforementioned anodic or cathode electrochromic materials presenting a dark or black reflective state can absorb ambient light from the outside and light emitted from the bottom surface of the light-emitting chip 20, thereby improving the display quality of the display panel.

[0034] For example, the above-mentioned anodic electrochromic material includes NiO. X IrO X CoO X RhO X The cathode electrochromic material can be any one or more of WO3, MoO3, TiO2, V2O5, and Nb2O5, but is not limited to the above types. It can be reasonably selected according to actual needs. The embodiments of this application do not make specific limitations.

[0035] In the display panel of this application embodiment, such as Figure 1 As shown, the photochromic layer 40 is in contact with the light-emitting body 210 in at least one light-emitting chip 20. Since ambient light can be reflected by the internal structure of the display panel, thus affecting the display quality of the display panel, and there is also emitted light from the side of the light-emitting chip 20, this embodiment of the application can absorb ambient light from the outside by reasonably setting the above-mentioned electrochromic layer 30, thereby reducing the reflectivity of ambient light in the display panel and improving the display quality of the display panel. At the same time, the electrochromic layer 30 can also absorb the emitted light from the side of the light-emitting chip 20 when the light-emitting chip 20 is working, avoiding the influence of the emitted light.

[0036] In some alternative implementations, such as Figure 1As shown, the light-emitting body 210 of the light-emitting chip 20 has a second sidewall in a direction perpendicular to the driving substrate 10, and the photochromic layer 40 covers the sidewall. Specifically, the light-emitting body 210 in the light-emitting chip 20 has a light-emitting surface, which corresponds to the display area of ​​the display panel. When the light-emitting chip 20 is working, the light-emitting body 210 emits light of the desired color and brightness through the light-emitting surface, so that the display panel displays a pattern of the desired color and brightness. While the light-emitting body 210 is irradiated by the light-emitting surface, the side of the light-emitting body 210 also emits light of the same color and brightness as the light emitted from the light-emitting surface. In this embodiment, at least part of the photochromic layer 40 can surround the outer periphery of the light-emitting body 210 of the light-emitting chip 20, so that ambient light from the outside and the emitted light from the side of the light-emitting body 210 can irradiate the photochromic layer 40, causing the photochromic layer 40 to absorb light and change color.

[0037] In some alternative implementations, such as Figure 1 As shown, the light-emitting chip 20 has a light-emitting surface that is away from the driving substrate 10. In the direction perpendicular to the driving substrate 10, the minimum vertical distance between the light-emitting surface and the driving substrate 10 is greater than the vertical distance between the highest point of the photochromic layer 40 and the driving substrate 10.

[0038] In the above optional embodiments, the light-emitting body 210 in the light-emitting chip 20 has a light-emitting surface of the driving substrate 10. The minimum vertical distance between the light-emitting surface and the driving substrate 10 means the maximum setting height of the light-emitting chip 20. The vertical distance between the highest point of the photochromic layer 40 and the driving substrate 10 means the maximum setting height of the photochromic layer 40. In this embodiment, by making the maximum setting height of the light-emitting chip 20 greater than the maximum setting height of the photochromic layer 40, the setting position of the photochromic layer 40 is lower than the light-emitting surface of the light-emitting chip 20, thereby preventing the emitted light from the light-emitting chip 20 from the light-emitting surface from being absorbed by the photochromic layer 40, thus ensuring the luminous efficiency of the light-emitting chip 20.

[0039] For example, in the direction perpendicular to the driving substrate 10, the height ratio of the photochromic layer 40 to the light-emitting body is greater than 0.5 and less than 1. By setting the height relationship between the photochromic layer 40 and the light-emitting body to meet the above range, it is possible to avoid the light emitted from the light-emitting chip 20 being absorbed by the photochromic layer 40, while ensuring that the light covering the sidewall of the light-emitting body has a sufficient size to absorb more ambient light from the outside and light emitted from the side of the light-emitting body 210, which is beneficial to improving the display quality of the display panel.

[0040] In some alternative implementations, such as Figure 1As shown, the electrochromic layer 30 has a first surface facing away from the driving substrate 10, and the orthographic projection of the photochromic layer 40 on the first surface is located in the first surface. Specifically, by setting the projections of the electrochromic layer 30 and the photochromic layer 40 on the surface of the driving substrate 10 to satisfy the above relationship, in the above-mentioned fabrication process of the electrochromic layer 30 and the photochromic layer 40, the electrochromic layer 30 can be formed first at the bottom of the light-emitting chip 20, and then the photochromic layer 40 surrounding the light-emitting body 210 in the light-emitting chip 20 can be formed, making the fabrication process simple and easy to implement.

[0041] For example, multiple light-emitting chips 20 emit different colors of light. The arrangement direction of any two adjacent light-emitting chips 20 with different colors of light is the first direction. The width ratio of the light-emitting body to the photochromic layer 40 in the first direction is (20-30):1. By setting the width relationship between the photochromic layer 40 and the light-emitting body to meet the above range, it can be ensured that the light covering the side wall of the light-emitting body is absorbed by the photochromic layer 40 with sufficient thickness to achieve absorption of more ambient light from the outside and light emitted from the side of the light-emitting body 210. This is beneficial to improving the display quality of the display panel. At the same time, it can also avoid the impact on the density of the light-emitting chips 20 caused by the photochromic layer 40 being too thick on the side wall of the light-emitting body, and avoid material waste.

[0042] In the display panel described in this embodiment, the photochromic layer 40 is made of a photochromic material, such as silver halide, tungsten oxide, and copper oxide. For example, the photochromic layer 40 includes silver halide, which is a transparent material that decomposes under light irradiation to form opaque silver and halogen elements. Under dark conditions, the halogen elements and silver can react under the catalysis of copper oxide to form transparent silver halide, thereby achieving the switching between light-transmitting and light-blocking states of the photochromic layer 40.

[0043] like Figure 3 As shown, the display panel in this embodiment may further include a thermochromic layer 60, which is in contact with the electrochromic layer 30 and / or the photochromic layer 40. Since the electrochromic layer 30 can absorb the heat transferred from the light-emitting chip 20 and change color when the chip is working, the thermochromic layer 60 can be made to appear as a light-colored or transparent light-transmitting state when the chip is not working, and to absorb heat and change color when the chip is working, thus appearing as a dark or black reflective state. This allows ambient light from the outside to be absorbed by the thermochromic layer 60 when the chip is working, preventing ambient light from being reflected to the display area by the components in the display panel, thereby reducing the impact of reflected ambient light on the display quality of the display panel.

[0044] Furthermore, in existing display panels, the light-emitting chip 20 is prone to overheating, which leads to increased defect rate and power consumption of the display panel. The aforementioned overheating problem also reduces the luminous efficiency of the light-emitting chip 20 and causes color shift in the display panel. In this embodiment, a thermochromic layer 60 is added that is in contact with at least one of the electrochromic layer 30 and the photochromic layer 40. Both the electrochromic layer 30 and the photochromic layer 40 are in contact with the light-emitting chip 20, so that the heat of the light-emitting chip 20 can be transferred to the thermochromic layer 60 through the electrochromic layer 30 and / or the photochromic layer 40, thereby cooling the light-emitting chip 20 and avoiding the impact of excessive heat of the light-emitting chip 20 on luminous efficiency, color shift, power consumption and other performance characteristics.

[0045] It should be noted that the thermochromic layer 60 described in this embodiment can replace the black light-absorbing layer (or black matrix) between adjacent light-emitting chips 20 in the prior art, or the thermochromic layer 60 can be provided on the basis of providing a black light-absorbing layer. This embodiment does not make specific limitations. In the display panel of this embodiment, when an electrochromic layer 30 and a photochromic layer 40 are added, but the thermochromic layer 60 is not added, adjacent light-emitting chips 20 are isolated by a black light-absorbing layer to avoid crosstalk between light-emitting chips 20 of different colors.

[0046] In some alternative implementations, such as Figure 3 As shown, the light-emitting chip 20 has a light-emitting surface that is away from the driving substrate 10. In the direction perpendicular to the driving substrate 10, the minimum vertical distance between the light-emitting surface and the driving substrate 10 is greater than the vertical distance between the highest point of the thermochromic layer 60 and the driving substrate 10.

[0047] In the above optional embodiments, the light-emitting body 210 in the light-emitting chip 20 has a light-emitting surface of the driving substrate 10. The minimum vertical distance between the light-emitting surface and the driving substrate 10 means the maximum setting height of the light-emitting chip 20. The vertical distance between the highest point of the thermochromic layer 60 and the driving substrate 10 means the maximum setting height of the thermochromic layer 60. In this embodiment, by making the maximum setting height of the light-emitting chip 20 greater than the maximum setting height of the thermochromic layer 60, the setting position of the thermochromic layer 60 is lower than the light-emitting surface of the light-emitting chip 20, thereby preventing the emitted light from the light-emitting chip 20 from the light-emitting surface from being absorbed by the thermochromic layer 60, thus ensuring the luminous efficiency of the light-emitting chip 20.

[0048] In some alternative implementations, such as Figure 3As shown, the display panel in this embodiment of the application further includes a connection portion 50 located between the driving substrate 10 and the light-emitting chip 20, an electrochromic layer 30 surrounding the outer periphery of each electrode 220, each connection portion 50 and each driving chip 120 of the driving substrate 10, a photochromic layer 40 surrounding the outer periphery of each light-emitting body 210, and a thermochromic layer 60 surrounding the electrochromic layer 30 and the photochromic layer 40.

[0049] In the above-mentioned optional embodiments, the connecting portion 50 electrically connects the light-emitting chip 20 to the driving substrate 10 to generate an electric field around the electrode 220 of the connecting portion 50 and the light-emitting chip 20. At least a portion of the electrochromic layer 30 surrounds the outer periphery of the electrode 220, thereby placing the electrochromic layer 30 in the electric field to achieve color change. The photochromic layer 40 surrounds the outer periphery of each light-emitting body 210, thereby absorbing ambient light and excess emitted light from the light-emitting chip 20 to achieve color change. The thermochromic layer 60 surrounds the electrochromic layer 30 and the photochromic layer 40, thereby allowing the thermochromic layer 60 to absorb the heat from the light-emitting chip 20 transferred by the electrochromic layer 30 and the photochromic layer 40. Thus, the absorption of more ambient light from the outside and excess emitted light from the sides and bottom of the light-emitting chip 20 is achieved through the electrochromic layer 30, the photochromic layer 40 and the thermochromic layer 60, while simultaneously cooling the light-emitting chip 20.

[0050] In some alternative implementations, such as Figure 3 and Figure 4 As shown, the side surface of the substrate 110 of the driving substrate 10 with the driving chip 120 is a second surface. The second surface has a first region that is not in contact with the driving chip 120 and the electrochromic layer 30, and the thermochromic layer 60 covers the first region. Specifically, after the electrochromic layer 30 and the photochromic layer 40 are provided, there is an unfilled space between adjacent light-emitting chips 20 on the substrate 110, that is, the space located in the first region of the second surface of the driving substrate 10. By covering the first region with the thermochromic layer 60, the thermochromic layer 60 can be filled into the remaining space between adjacent light-emitting chips 20, thereby replacing the black light-absorbing layer in the prior art, realizing the isolation between adjacent light-emitting chips 20, and avoiding crosstalk between light-emitting chips 20 of different colors. Figure 4 The arrangement of the light-emitting chips can be compared with... Figure 2 The same applies, so I will not repeat it here.

[0051] Specifically, the thermochromic layer 60 is made of thermochromic materials, such as vanadium dioxide, bismuth vanadate, and supramolecular materials, but is not limited to the above types. It can be reasonably selected according to actual needs. The embodiments of this application do not make specific limitations.

[0052] like Figure 3As shown, the display panel in this embodiment further includes a light-transmitting layer 70, which is located at least on the side of the light-emitting chip 20 facing away from the driving substrate 10. Specifically, the light-transmitting layer 70 covers the surface of the substrate 110 in the light-emitting chip 20 and the driving substrate 10 that is not blocked by the driving chip 120. Thus, the light-transmitting layer 70 not only protects the light-emitting chip 20 and the driving substrate 10, but also functions as a planarization layer. Exemplarily, in the fabrication process of the light-transmitting layer 70, a coating process can be used to deposit liquid light-transmitting material on the light-emitting chip 20 and the driving substrate 10, and then a curing process can be used to convert the liquid light-transmitting material into a solid light-transmitting layer 70. This embodiment does not specifically limit the fabrication process of the light-transmitting layer 70.

[0053] According to another embodiment of this application, such as Figure 5 As shown, a display device 1 is provided, including the display panel described above, the display panel having a display area 3 and a non-display area 2.

[0054] Specifically, the aforementioned display device can be an electronic device such as a mobile phone, computer, or television, and the aforementioned display panel can be applied to all of them.

[0055] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0056] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A display panel, characterized in that, include: Drive substrate; Multiple light-emitting chips are located on the same side of the driving substrate. Each light-emitting chip includes a light-emitting body and an electrode, with the electrode located on the side of the light-emitting body closer to the driving substrate. An electrochromic layer is in contact with at least one of the electrodes; A photochromic layer is in contact with at least one of the light-emitting entities; A thermochromic layer is in contact with the electrochromic layer and / or the photochromic layer, but not with the light-emitting chip. The photochromic layer surrounds the outer periphery of each light-emitting entity, and the thermochromic layer surrounds the electrochromic layer and the photochromic layer. Multiple connecting portions are located between the driving substrate and the light-emitting chip, and multiple electrodes are electrically connected to the driving substrate. At least a portion of the electrochromic layer simultaneously surrounds the outer periphery of each electrode, each connecting portion, and each driving chip of the driving substrate, and at least a portion of the electrochromic layer fills the space between two adjacent connecting portions.

2. The display panel according to claim 1, characterized in that, The driving substrate includes a substrate and a plurality of driving chips located on a first side of the substrate. The first side is the side of the substrate close to the light-emitting chip. The plurality of driving chips correspond one-to-one with the plurality of light-emitting chips. Each driving chip is electrically connected to its corresponding light-emitting chip through the connecting portion. The area between each driving chip and its corresponding light-emitting chip, excluding the connecting portion, is a gap area. At least a portion of the electrochromic layer is filled in the gap area.

3. The display panel according to claim 2, characterized in that, The driving chip has a first sidewall in a direction perpendicular to the driving substrate, and a portion of the electrochromic layer covers the first sidewall.

4. The display panel according to claim 1, characterized in that, The electrode has a contact surface that faces away from the light-emitting body, and the minimum vertical distance between the contact surface and the driving substrate is less than the vertical distance between the highest point of the electrochromic layer and the driving substrate.

5. The display panel according to claim 1, characterized in that, The light-emitting body has a second sidewall in a direction perpendicular to the driving substrate, and the photochromic layer covers the sidewall.

6. The display panel according to claim 5, characterized in that, The light-emitting chip has a light-emitting surface facing away from the driving substrate. In a direction perpendicular to the driving substrate, the minimum vertical distance between the light-emitting surface and the driving substrate is greater than the vertical distance between the highest point of the photochromic layer and the driving substrate.

7. The display panel according to claim 6, characterized in that, In the direction perpendicular to the driving substrate, the height ratio of the photochromic layer to the light-emitting body is greater than 0.5 and less than 1.

8. The display panel according to claim 5, characterized in that, The electrochromic layer has a first surface facing away from the driving substrate, and the orthographic projection of the photochromic layer on the first surface is located in the first surface.

9. The display panel according to claim 5, characterized in that, The multiple light-emitting chips emit different colors of light. The arrangement direction of any two adjacent light-emitting chips with different light-emitting colors is the first direction. The width ratio of the light-emitting body to the photochromic layer in the first direction is (20-30):

1.

10. The display panel according to claim 1, characterized in that, The light-emitting chip has a light-emitting surface facing away from the driving substrate. In a direction perpendicular to the driving substrate, the minimum vertical distance between the light-emitting surface and the driving substrate is greater than the vertical distance between the highest point of the thermochromic layer and the driving substrate.

11. The display panel according to claim 1, characterized in that, The substrate of the driving substrate has a second surface on the side containing the driving chip. The second surface has a first region that is not in contact with the driving chip and the electrochromic layer. The thermochromic layer covers the first region.

12. The display panel according to claim 1, characterized in that, Also includes: A light-transmitting layer is located at least on the side of the light-emitting chip that is away from the driving substrate.

13. A display device, characterized in that, The display panel includes any one of claims 1 to 12.

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