Display panel and display device

Abstract

The application discloses a display panel and a display device, and relates to the technical field of display, wherein the display panel comprises a first substrate, a light-induced heating layer and a light-emitting piece; the light-induced heating layer is arranged on one surface of the first substrate; the light-emitting piece is arranged on the side of the light-induced heating layer away from the first substrate and can emit non-visible light; the light-induced heating layer can transmit visible light and absorb non-visible light to generate heat; the technical scheme provided by the application can improve the anti-fog performance of the display panel; meanwhile, the anti-fog performance of the display panel can be further improved by adjusting the light-emitting intensity of the light-emitting piece, and the application is suitable for extremely low-temperature and humid environments; in addition, the structure of the display panel is relatively simple, special materials or complex manufacturing processes are not needed, and the production cost is relatively low; in actual application, the display performance such as the transmittance and color restoration of the display panel is not affected.

Description

Technical Field

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

[0002] In low-temperature and humid environments, display panels are prone to fogging. This phenomenon is mainly caused by water vapor in the air condensing into small water droplets at low temperatures and adhering to the surface of the display panel. This phenomenon affects the display effect and user experience.

[0003] Currently, the anti-fogging performance of display panels is mainly improved by changing the panel material or structure. For example, by coating the surface of the display panel with hydrophobic materials, the hydrophobic properties of the materials prevent water droplets from adhering to the surface of the display panel, thereby achieving an anti-fogging effect; or by changing the manufacturing process of the display panel to make it more waterproof, thus achieving an anti-fogging effect. However, these methods still have the following problems: (1) They require special materials or complex manufacturing processes, resulting in high production costs; (2) In practical applications, they may affect the display performance of the panel, such as transmittance and color reproduction; (3) In extremely low temperature and humid environments, they may not be able to effectively prevent fogging. Summary of the Invention

[0004] The main objective of this invention is to provide a display panel and display device that improves the anti-fog performance of the display panel while reducing production costs and without affecting the display performance of the display panel.

[0005] To achieve the above objectives, the present invention provides a display panel comprising:

[0006] First substrate;

[0007] A photothermal layer is disposed on one surface of the first substrate;

[0008] The light-emitting element is disposed on the side of the photothermal layer facing away from the first substrate and can emit non-visible light;

[0009] The photothermal layer can transmit visible light and absorb non-visible light to generate heat.

[0010] In one embodiment, the wavelength range of the non-visible light is 800-1000 nm, and the material of the photothermal layer is at least one selected from the following: copper sulfide nanomaterials, carbon nanotubes, graphene, titanium dioxide, gold nanoparticles, and silver nanoparticles; and / or,

[0011] The thickness of the photothermal layer is 50-100 nm, and the density of the photothermal layer is 1.5-2.0 g / cm³. 3 .

[0012] In one embodiment, the light-emitting element is a light-emitting lamp or a photoluminescent layer.

[0013] In one embodiment, the light-emitting element is a light-emitting lamp, and the display panel further includes a reflective film layer disposed on the surface of the first substrate facing away from the photothermal layer; or,

[0014] The light-emitting element is a photoluminescent layer, and the display panel further includes a visible light reflective film layer, which is disposed on the surface of the first substrate facing away from the photoluminescent layer.

[0015] In one embodiment, the light-emitting element is a light-emitting lamp, and the display panel further includes:

[0016] Multiple black photoresists are alternately disposed on the surface of the first substrate along with the photothermal layer;

[0017] A colored filter film layer is disposed on the surface of the photothermal layer facing away from the first substrate and covers the black photoresist.

[0018] The second substrate is disposed opposite to the side of the color filter film layer that is away from the photothermal layer;

[0019] A liquid crystal layer is disposed between the second substrate and the color filter layer;

[0020] The light-emitting lamp is disposed on the side of the second substrate opposite to the liquid crystal layer.

[0021] In one embodiment, the light-emitting element is a light-emitting lamp, and the display panel further includes:

[0022] Multiple visible light reflective film layers are spaced apart on the surface of the photothermal layer facing away from the first substrate;

[0023] A color filter film layer is disposed on the surface of the photothermal layer facing away from the first substrate and covers the visible light reflective film layer;

[0024] The second substrate is disposed opposite to the side of the color filter film layer that is away from the photothermal layer;

[0025] A liquid crystal layer is disposed between the second substrate and the color filter layer;

[0026] The light-emitting lamp is disposed on the side of the second substrate opposite to the liquid crystal layer.

[0027] In one embodiment, the light-emitting element is a photoluminescent layer, and the display panel further includes a color filter layer, an organic insulating layer, a light-emitting layer, and a support material layer. The color filter layer, the organic insulating layer, and the light-emitting layer are stacked between the photothermal layer and the photoluminescent layer in a direction away from the first substrate. The light-emitting layers are spaced apart and connected to each other, and the support material layer fills the space between two adjacent light-emitting layers.

[0028] In one embodiment, the surface temperature of the display panel when the photothermal layer heats up is 20-30°C.

[0029] The present invention also proposes a display device, the display device comprising the display panel described above.

[0030] In one embodiment, the display device further includes a backlight module, and the light-emitting element of the display panel is a light-emitting lamp, which is fixed to one side of the backlight module.

[0031] The technical solution of this invention provides a display panel comprising a first substrate, a photothermal layer, and a light-emitting element. The photothermal layer is disposed on one surface of the first substrate, and the light-emitting element is disposed on the side of the photothermal layer facing away from the first substrate and emits non-visible light. The photothermal layer transmits visible light and absorbs non-visible light to generate heat. This arrangement allows the display panel surface to heat up, effectively preventing fogging in low-temperature and humid environments, thus providing good anti-fogging performance. Furthermore, the anti-fogging performance can be improved by adjusting the luminous intensity of the light-emitting element, making it suitable for extremely low-temperature and humid environments. Moreover, the display panel has a relatively simple structure, requiring no special materials or complex manufacturing processes, resulting in lower production costs. In practical applications, since the photothermal layer transmits visible light, it does not affect the display panel's transmittance, color reproduction, or other display performance characteristics. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0033] Figure 1 This is an exploded structural diagram of an embodiment of the display panel provided by the present invention;

[0034] Figure 2 This is an exploded structural diagram of another embodiment of the display panel provided by the present invention;

[0035] Figure 3 A schematic diagram of the structure of an embodiment of the display device provided by the present invention;

[0036] Figure 4 A schematic diagram of another embodiment of the display device provided by the present invention;

[0037] Figure 5 This is a schematic diagram of another embodiment of the display panel provided by the present invention.

[0038] Explanation of icon numbers:

[0039] 1000, Display panel; 101, First substrate; 102, Second substrate; 103, Photothermal layer; 104, Light-emitting lamp; 105, Photoluminescent layer; 106, Reflective film layer; 107, Visible light reflective film layer; 108, Black photoresist; 109, Color filter film layer; 110, Liquid crystal layer; 120, Organic insulating layer; 130, Light-emitting layer; 131, Anode layer; 132, Organic material layer; 133, Cathode layer; 140, Support material layer; 200, Backlight module; 201, Backlight source; A, Visible light; B, Non-visible light.

[0040] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0042] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0043] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0044] This invention proposes a display panel 1000, which aims to improve the anti-fog performance of the display panel 1000, while reducing production costs and without affecting the display performance of the display panel 1000.

[0045] Please see Figure 1 and Figure 2 In one embodiment of the present invention, the display panel 1000 includes a first substrate 101, a photothermal layer 103 and a light-emitting element. The photothermal layer 103 is disposed on one surface of the first substrate 101, and the light-emitting element is disposed on the side of the photothermal layer 103 facing away from the first substrate 101 and can emit non-visible light. The photothermal layer 103 can transmit visible light and absorb non-visible light to generate heat.

[0046] Specifically, the first substrate 101 can be a glass substrate, and the photothermal layer 103 is made of a photothermal material. The photothermal material can transmit visible light and can absorb non-visible light of a specific wavelength to generate heat, such as absorbing near-infrared light to generate heat. The light-emitting component can be a light lamp 104, a photoluminescent layer 105, or other light-emitting components, as long as they can emit non-visible light.

[0047] It should be noted that the photothermal layer 103 can transmit visible light but absorb non-visible light, and the wavelength range of the non-visible light absorbed by the photothermal layer 103 must be the same as the wavelength range of the non-visible light emitted by the light-emitting element. In this way, the photothermal layer 103 can absorb light and generate heat more effectively and fully, thereby improving the utilization rate of non-visible light.

[0048] The technical solution of this invention involves providing a photothermal layer 103 and a light-emitting element inside the display panel 1000. The photothermal layer 103 absorbs the non-visible light emitted by the light-emitting element and generates heat, causing the surface of the display panel 1000 to heat up. This effectively prevents fogging of the display panel 1000 in low-temperature and humid environments, meaning the display panel 1000 has good anti-fogging performance. Furthermore, the anti-fogging performance of the display panel 1000 can be improved by adjusting the luminous intensity of the light-emitting element, making it suitable for extremely low-temperature and humid environments. Moreover, the structure of the display panel 1000 is relatively simple, requiring no special materials or complex manufacturing processes, resulting in low production costs. In addition, in practical applications, since the photothermal layer 103 is transparent to visible light, it does not affect the transmittance, color reproduction, or other display performance of the display panel 1000.

[0049] In an optional embodiment of the present invention, the wavelength range of non-visible light is 800-1000nm, that is, the light emitted by the light-emitting element is near-infrared light. Correspondingly, the material of the photothermal layer 103 is at least one of nano-copper sulfide photothermal material, carbon nanotubes, graphene, titanium dioxide, gold nanoparticles, and silver nanoparticles. These materials can absorb near-infrared light and generate heat. The photothermal layer 103 can be made by vacuum coating, deposition or other reasonable methods.

[0050] In one specific embodiment of the present invention, the photothermal layer 103 is made of transparent nano-copper sulfide photothermal film. The transparent nano-copper sulfide photothermal film has the characteristics of absorbing near-infrared light to generate heat and nano-high visible light transmittance, which can improve the anti-fog performance of the display panel 1000 to adapt to low temperature and humid environment. At the same time, in practical applications, it will not affect the display performance such as transmittance and color reproduction of the display panel 1000.

[0051] In fabricating the photothermal layer 103, this invention requires careful control of its thickness and density to ensure good absorption of non-visible light and good transmittance of visible light, thereby avoiding any impact on the display performance of the real-world panel, such as transmittance and color reproduction. Optionally, the thickness of the photothermal layer 103 is 50-100 nm (e.g., 50 nm, 60 nm, 70 nm, 80 nm, 90 nm, 100 nm, or any range between two endpoints), and the density of the photothermal layer 103 is 1.5-2.0 g / cm³. 3 (e.g., 1.5g / cm) 3 1.6g / cm 3 1.7g / cm 3 1.8g / cm 3 1.9g / cm 3 2.0g / cm 3 And the interval between any two endpoints).

[0052] In an optional embodiment of the present invention, the light-emitting element is a light-emitting lamp 104 or a photoluminescent layer 105. The light-emitting lamp 104 may be a non-visible light LED lamp, such as a near-infrared light LED lamp. The photoluminescent layer 105 is made of a photoluminescent material. The photoluminescent material has the property of absorbing non-visible light and making its material in an excited state to generate non-visible light. For example, the photoluminescent layer 105 can absorb near-infrared light and generate near-infrared light.

[0053] In one specific embodiment of the present invention, the photoluminescent layer 105 is made of a long-afterglow luminescent material. In addition to absorbing non-visible light and exciting the material to generate non-visible light, the long-afterglow luminescent material also has the ability to store non-visible light. Thus, the display panel 1000 can be used for display in a dark environment.

[0054] Please refer to it again. Figure 1 In the first embodiment of the present invention, the light-emitting element is a light-emitting lamp 104, and the display panel 1000 further includes a reflective film layer 106, which is disposed on the surface of the first substrate 101 away from the photothermal layer 103.

[0055] The application scenario of this embodiment can be a display panel 1000 for a vehicle rearview mirror. The display panel 1000 includes a photothermal layer 103, a first substrate 101, and a reflective film layer 106 stacked sequentially. The first substrate 101 is a glass substrate, and the photothermal layer 103 is a nano-copper sulfide photothermal film. The thickness of the nano-copper sulfide photothermal film is controlled within the range of 50-100 nm, and the density is controlled within the range of 1.5-2.0 g / cm³. 3 The nano-copper sulfide photothermal film is uniformly deposited on the surface of the first substrate 101 using a vacuum deposition method. The reflective film layer 106 uses a metal reflective film, such as an aluminum reflective film or a silver reflective film, which has a high reflectivity and can better reflect external light; the thickness of the reflective film can be selected from 0.1-0.5mm (e.g., 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, and any range between two endpoints). The light-emitting lamp 104 uses a near-infrared LED lamp, the rated power of which can be selected as 1W, and the wavelength range of the light emitted by the near-infrared LED lamp is 800-1000nm, i.e., near-infrared light. The near-infrared LED lamp is installed on the side of the photothermal layer 103 facing away from the first substrate 101, and there is a certain distance between it and the photoluminescent layer 105. The installation method of the near-infrared LED lamp is not limited, and its distance value can be determined according to the actual situation, and is not restricted here.

[0056] When the near-infrared LED is turned on, it emits near-infrared light that shines onto the nano-copper sulfide photothermal film. The nano-copper sulfide photothermal film absorbs the near-infrared light and generates heat, thereby heating the surface of the display panel 1000 and improving its anti-fog performance.

[0057] It should be noted that the intensity of the emitted near-infrared light can be increased by adjusting the power of the near-infrared LED, thereby raising the heating temperature of the nano-copper sulfide photothermal film, and thus increasing the surface heating temperature of the display panel 1000, to adapt to different low-temperature and humid environmental conditions. In extremely low-temperature and humid environments, such as a temperature of -20°C and humidity of 90%, the power of the near-infrared LED can be adjusted from the original 1W to 1.5W. This increases the intensity of the near-infrared light emitted by the near-infrared LED, allowing the nano-copper sulfide photothermal film to generate sufficient heat, resulting in a higher surface heating temperature of the display panel 1000 and more effectively preventing fogging.

[0058] In this embodiment, by applying a nano-copper sulfide photothermal film and a near-infrared LED lamp to the display panel 1000 of the vehicle rearview mirror, the anti-fog performance of the display panel 1000 of the vehicle rearview mirror is improved, effectively solving the problem that the display panel 1000 of the vehicle rearview mirror is prone to fogging in low temperature and humid environments. At the same time, compared with the existing hydrophobic anti-fog solution, this solution has a simple structure, does not require special materials or complex manufacturing processes, has relatively low production costs, and does not rely on external light sources, making it applicable to a wide range of scenarios.

[0059] Of course, in the first embodiment, the photothermal layer 103 may also be made of other materials that absorb near-infrared light and generate heat, such as carbon nanotubes, graphene, titanium dioxide, gold nanoparticles, silver nanoparticles, or the photothermal layer 103 may be made of other materials that absorb other non-visible light and generate heat. Correspondingly, the light-emitting lamp 104 may be other corresponding non-visible light LED lamps.

[0060] Please see Figure 2 In the second embodiment of the present invention, the light-emitting element is a photoluminescent layer 105, and the display panel 1000 further includes a visible light reflective film layer 107, which is disposed on the surface of the first substrate 101 facing away from the photothermal layer 103.

[0061] In this embodiment, the display panel 1000 can be applied to a vehicle rearview mirror or an outdoor reflective device. The display panel 1000 includes a photothermal layer 103, a first substrate 101, and a visible light reflective film layer 107 stacked sequentially. The first substrate 101 is a glass substrate, and the photothermal layer 103 is a nano-copper sulfide photothermal film. The thickness of the nano-copper sulfide photothermal film is controlled within the range of 50-100 nm, and its density is controlled within the range of 1.5-2.0 g / cm³. 3 The nano-copper sulfide photothermal thin film is uniformly deposited on the surface of the first substrate 101 using a vacuum deposition method. The visible light reflective film layer 107 is made of a visible light reflective material and has a good reflective effect on visible light. The visible light reflective material can be selected as a metal oxide, such as zinc oxide or titanium oxide. The thickness of the visible light reflective film layer 107 can be selected as 0.1-0.5 mm (e.g., 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, and any range between two endpoints). The photoluminescent layer 105 is disposed on the side of the photothermal layer 103 facing away from the first substrate 101, and there is a certain distance between the photoluminescent layer 103 and the photoluminescent layer 105. The distance value can be determined according to the actual situation and is not limited here. The photoluminescent layer 105 is made of a photoluminescent material. The photoluminescent material has the property of absorbing near-infrared light and making its material in an excited state to generate near-infrared light. Optionally, the photoluminescent layer 105 is made of a long-afterglow luminescent material. The long-afterglow luminescent material has the property of absorbing non-visible light, storing non-visible light, and making its material in an excited state to generate non-visible light, which can make the display panel 1000 display in a daytime environment and also in a dark environment. Optionally, the thickness of the photoluminescent layer 105 can be selected as 0.1-5mm (e.g., 0.1mm, 1mm, 2mm, 3mm, 4mm, 5mm and any range between two endpoints).

[0062] When an external light source illuminates the display panel 1000, the visible light reflective film layer 107 reflects the visible light. Non-visible light passes through the visible light reflective film layer 107 and the first substrate 101 in sequence and then illuminates the nano-copper sulfide photothermal film. The nano-copper sulfide photothermal film absorbs the near-infrared light in the non-visible light. Other non-visible light, except for near-infrared light, passes through the nano-copper sulfide photothermal film and illuminates the photoluminescent layer 105. The photoluminescent layer 105 absorbs other non-visible light, except for near-infrared light, and is in an excited state and generates near-infrared light. The near-infrared light illuminates the nano-copper sulfide photothermal film, which absorbs the near-infrared light and heats up, thereby heating the surface of the display panel 1000 and improving the anti-fog performance of the display panel 1000.

[0063] It should be noted that the second embodiment can increase the intensity of near-infrared light generated by the photoluminescent layer 105 by adjusting the brightness of the external irradiation light source, thereby enabling the nano-copper sulfide photothermal film to generate sufficient heat and increase the surface heating temperature of the display panel 1000 to adapt to extreme low temperature and humid environment conditions.

[0064] The second embodiment of the present invention improves the anti-fog performance of the display panel 1000 of the vehicle rearview mirror or outdoor reflector by applying a nano-copper sulfide photothermal film and a photoluminescent layer 105 to the display panel 1000 of the vehicle rearview mirror or outdoor reflector. This effectively solves the problem that the display panel 1000 of the vehicle rearview mirror or outdoor reflector is prone to fogging in low temperature and humid environments. At the same time, compared with the existing hydrophobic anti-fog solution, this solution has a simple structure, does not require special materials or complex manufacturing processes, and has relatively low production costs. Furthermore, compared with the first embodiment, no additional light source is required, resulting in lower power consumption.

[0065] Of course, in the second embodiment, the photothermal layer 103 may also be made of other materials that absorb near-infrared light and generate heat, such as carbon nanotubes, graphene, titanium dioxide, gold nanoparticles, silver nanoparticles, or the photothermal layer 103 may be made of other materials that absorb other non-visible light and generate heat. Correspondingly, the photoluminescent layer 105 may emit other corresponding non-visible light.

[0066] Please see Figure 3 In the third embodiment of the present invention, the light-emitting element is a light-emitting lamp 104, and the display panel 1000 further includes a plurality of black photoresists 108, a color filter layer 109, a second substrate 102, and a liquid crystal layer 110. The plurality of black photoresists 108 and the photoheating layer 103 are alternately disposed on the surface of the first substrate 101; the color filter layer 109 is disposed on the surface of the photoheating layer 103 facing away from the first substrate 101 and covers the black photoresists 108; the second substrate 102 is disposed opposite to the side of the color filter layer 109 facing away from the photoheating layer 103; the liquid crystal layer 110 is disposed between the second substrate 102 and the color filter layer 109; and the light-emitting lamp 104 is disposed on the side of the second substrate 102 facing away from the liquid crystal layer 110.

[0067] In this embodiment, the display panel 1000 is a liquid crystal display panel. In the display panel 1000, the first substrate 101 and the second substrate 102 are disposed opposite to each other, both of which can be selected as transparent glass substrates. The photothermal layer 103 can be selected as a nano-copper sulfide photothermal film. The thickness of the nano-copper sulfide photothermal film is controlled in the range of 50-100 nm, and the density is controlled in the range of 1.5-2.0 g / cm³. 3The nano-copper sulfide photothermal film is uniformly deposited on the surface of the first substrate 101 using a vacuum deposition method. The color filter layer 109 includes red, green, and blue color film layers. The black photoresist 108 is the black light-blocking area between the different color filter layers 109. The photothermal layer 103 includes multiple spaced-apart split structures, which are alternately arranged with the black photoresist 108. The color filter layer 109 covers the entire nano-copper sulfide photothermal film and all of the black photoresist 108. Optionally, the thickness of the black photoresist 108 is not less than the thickness of the photothermal layer 103. The first substrate 101, the second substrate 102, the black photoresist 108, the color filter layer 109, and the liquid crystal layer 110 are all conventionally configured, and all of them are transparent to visible light. For details, please refer to existing technology, which will not be elaborated here. The light source 104 is a near-infrared LED. The rated power of the near-infrared LED can be selected as 1W. The wavelength range of the light emitted by the near-infrared LED is 800-1000nm, which is near-infrared light. The near-infrared LED is installed on the side of the second substrate 102 facing away from the liquid crystal layer 110 (that is, the back side of the display panel 1000). The installation method of the near-infrared LED is not limited.

[0068] When the near-infrared LED is turned on, the near-infrared LED emits near-infrared light that passes through the second substrate 102, the liquid crystal layer 110, and the color filter layer 109 in sequence and irradiates the nano-copper sulfide photothermal film. The nano-copper sulfide photothermal film absorbs the near-infrared light and generates heat, thereby heating the surface of the liquid crystal display panel 1000 and improving the anti-fog performance of the liquid crystal display panel 1000.

[0069] It should be noted that the third embodiment can increase the intensity of the emitted near-infrared light by adjusting the power of the near-infrared LED, thereby increasing the heating temperature of the nano-copper sulfide photothermal film, and thus increasing the surface heating temperature of the liquid crystal display panel, to adapt to different low-temperature and humid environmental conditions. In extremely low-temperature and humid environments, such as a temperature of -20°C and a humidity of 90%, the power of the near-infrared LED can be adjusted from the original 1W to 1.5W. This greatly increases the intensity of the near-infrared light emitted by the near-infrared LED, thereby enabling the nano-copper sulfide photothermal film to generate sufficient heat, resulting in a higher surface heating temperature of the liquid crystal display panel 1000, which more effectively prevents fogging.

[0070] The third embodiment of the present invention improves the anti-fogging performance of the liquid crystal display panel 1000 by applying a nano-copper sulfide photothermal film and a near-infrared LED lamp. This effectively solves the problem of fogging in the liquid crystal display panel 1000 under low-temperature and humid environments. Furthermore, compared to existing hydrophobic anti-fogging solutions, this solution has a simpler structure, requires no special materials or complex manufacturing processes, has relatively lower production costs, and is not dependent on external light sources, making it suitable for a wider range of applications. In addition, since the nano-copper sulfide photothermal film is transparent to visible light, it does not affect the transmittance, color reproduction, or other display performance of the liquid crystal display panel 1000.

[0071] Of course, in the third embodiment, the photothermal layer 103 may also be made of other materials that absorb near-infrared light and generate heat, such as carbon nanotubes, graphene, titanium dioxide, gold nanoparticles, silver nanoparticles, or the photothermal layer 103 may be made of other materials that absorb other non-visible light and generate heat. Correspondingly, the light-emitting lamp 104 may be other corresponding non-visible light LED lamps.

[0072] Please see Figure 4 In the fourth embodiment of the present invention, the light-emitting element is a light-emitting lamp 104, and the display panel 1000 further includes a plurality of visible light reflective film layers 107, a color filter film layer 109, a second substrate 102, and a liquid crystal layer 110. The plurality of visible light reflective film layers 107 are spaced apart on the surface of the photoheating layer 103 facing away from the first substrate 101; the color filter film layer 109 is disposed on the surface of the photoheating layer 103 facing away from the first substrate 101 and covers the visible light reflective film layers 107; the second substrate 102 is disposed opposite to the side of the color filter film layer 109 facing away from the photoheating layer 103; the liquid crystal layer 110 is disposed between the second substrate 102 and the color filter film layer 109; and the light-emitting lamp 104 is disposed on the side of the second substrate 102 facing away from the liquid crystal layer 110.

[0073] In this embodiment, the display panel 1000 is applied to the liquid crystal display panel 1000. The difference from the third embodiment is that in this embodiment, a visible light reflective film layer 107 is used instead of the black photoresist 108 in the third embodiment, and multiple visible light reflective film layers 107 are provided, which are spaced apart on the surface of the photothermal layer 103 facing away from the first substrate 101. The specific arrangement of the first substrate 101, the color filter layer 109, the second substrate 102, the liquid crystal layer 110, and the light-emitting lamp 104 can be referred to the third embodiment, and will not be described in detail here.

[0074] When the near-infrared LED is turned on, some of the near-infrared light emitted by the LED passes sequentially through the second substrate 102, the liquid crystal layer 110, the color filter layer 109, and the visible light reflective film layer 107, and then irradiates the nano-copper sulfide photothermal film (see...). Figure 4 In addition to the visible light (B) from the liquid crystal display panel 1000, some near-infrared light also passes through the second substrate 102, the liquid crystal layer 110, and the color filter layer 109 in sequence and irradiates the nano-copper sulfide photothermal film. The nano-copper sulfide photothermal film absorbs the near-infrared light and generates heat, thereby heating the surface of the liquid crystal display panel 1000 and improving the anti-fogging performance of the liquid crystal display panel 1000. At the same time, some visible light emitted from the light source on the back side of the liquid crystal display panel 1000 passes through the second substrate 102, the liquid crystal layer 110, and the color filter layer 109 in sequence and irradiates the visible light reflective film layer 107, and is reflected by the visible light reflective film layer 107 (see...). Figure 4 In addition to the visible light (A), some visible light passes sequentially through the second substrate 102, the liquid crystal layer 110, the color filter layer 109, the nano-copper sulfide photothermal film, and the first substrate 101 before being emitted, so that the liquid crystal display panel 1000 can display. In this way, the visible light reflective film layer 107 also serves the function of the original black photoresist 108.

[0075] Optionally, the thickness of the visible light reflective film layer 107 is 0.1-0.5 mm (e.g., 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, and any range between two endpoints).

[0076] It should be noted that the fourth embodiment can increase the intensity of the emitted near-infrared light by adjusting the power of the near-infrared LED, thereby increasing the heating temperature of the nano-copper sulfide photothermal film, and thus increasing the surface heating temperature of the liquid crystal display panel 1000, to adapt to different low-temperature and humid environmental conditions. In extremely low-temperature and humid environments, such as a temperature of -20°C and a humidity of 90%, the power of the near-infrared LED can be adjusted from the original 1W to 1.5W. This greatly increases the intensity of the near-infrared light emitted by the near-infrared LED, thereby enabling the nano-copper sulfide photothermal film to generate sufficient heat, resulting in a higher surface heating temperature of the liquid crystal display panel 1000 and more effectively preventing fogging.

[0077] The fourth embodiment of the present invention improves the anti-fogging performance of the liquid crystal display panel 1000 by applying a nano-copper sulfide photothermal film, a near-infrared LED lamp, and a visible light reflective film layer 107 (replacing the original black photoresist 108) to the liquid crystal display panel 1000. This effectively solves the problem of fogging that easily occurs in the liquid crystal display panel 1000 under low-temperature and humid environments. Furthermore, compared to existing hydrophobic anti-fogging solutions, this solution has a simple structure, requires no special materials or complex manufacturing processes, has relatively low production costs, and does not rely on external light sources, making it suitable for a wide range of applications. In addition, since the nano-copper sulfide photothermal film has the characteristic of being able to transmit visible light, it will not affect the transmittance, color reproduction, or other display performance of the liquid crystal display panel 1000.

[0078] Compared to the third embodiment, in the fourth embodiment of the present invention, since the visible light reflective film layer 107 is disposed on the surface of the nano-copper sulfide photothermal film, rather than inside it, the portion of the nano-copper sulfide photothermal film corresponding to the visible light reflective film layer 107 can still absorb near-infrared light and generate heat. As a result, the anti-fog performance of the liquid crystal display panel 1000 is better and more comprehensive, and does not affect the appearance, color and brightness of the liquid crystal display panel 1000.

[0079] Of course, in the fourth embodiment, the photothermal layer 103 may also be made of other materials that absorb near-infrared light and generate heat, such as carbon nanotubes, graphene, titanium dioxide, gold nanoparticles, silver nanoparticles, or the photothermal layer 103 may be made of other materials that absorb other non-visible light and generate heat. Correspondingly, the light-emitting lamp 104 may be other corresponding non-visible light LED lamps.

[0080] Please see Figure 5 In the fifth embodiment of the present invention, the light-emitting element is a photoluminescent layer 105, and the display panel 1000 further includes a color filter layer 109, an organic insulating layer 120, a light-emitting layer 130, and a support material layer 140. The color filter layer 109, the organic insulating layer 120, and the light-emitting layer 130 are stacked between the photothermal layer 103 and the photoluminescent layer 105 in a direction away from the first substrate 101. A plurality of light-emitting layers 130 are spaced apart and connected to each other. The support material layer 140 fills the space between two adjacent light-emitting layers 130.

[0081] In this embodiment, the display panel 1000 is an organic light-emitting diode (OLED) display panel. The OLED display panel includes a first substrate 101, a photothermal layer 103, a color filter layer 109, an organic insulating layer 120, a light-emitting layer 130, a support material layer 140, and a photoluminescent layer 105, which are sequentially stacked. The first substrate 101 can be a glass substrate, and the photothermal layer 103 is a nano-copper sulfide photothermal film. The thickness of the nano-copper sulfide photothermal film is controlled within the range of 50-100 nm, and the density is controlled within the range of 1.5-2.0 g / cm³. 3 The nano-copper sulfide photothermal film is uniformly deposited on the surface of the first substrate 101 using a vacuum deposition method. The color filter film layer 109 includes three color film layers: red, green, and blue. The organic insulating layer 120 is made of organic insulating material and serves to flatten the color filter film layer 109. It can be a transparent organic insulating layer 120. The light-emitting layer 130 includes an anode layer 131, an organic material layer 132, and a cathode layer 133. The anode layer 131 is made of indium tin oxide, the organic material layer 132 is made of a light-emitting material, and the cathode layer 133 is made of a cathode material. Two adjacent light-emitting layers 130 are connected through the anode layer 131. A support material layer 140 is filled between two adjacent light-emitting layers 130, and the surface of the support material layer 140 is flush with the surface of the cathode layer 133 to support the photoluminescent layer 105. The support material used in the support material layer 140 is a transparent insulating material. The transparent insulating material is filled between two adjacent light-emitting layers 130, and the surface of the support material layer 140 is flush with the surface of the light-emitting layer 130 to facilitate the deposition of the photoluminescent layer 105.

[0082] In this embodiment of the invention, a nano-copper sulfide photothermal film (i.e., photothermal layer 103) and a photoluminescent layer 105 are disposed within an OLED display panel. The photoluminescent layer 105 absorbs the light emitted from the light-emitting layer 130 and is excited to generate near-infrared light, which is absorbed by the nano-copper sulfide photothermal film to generate heat, thereby heating the OLED display panel and achieving anti-fogging performance. Specifically, under the voltage action of the cathode layer 133 and the anode layer 131, the organic material layer 132 emits light, which passes through the cathode layer 133 and irradiates the photoluminescent layer 105, causing the photoluminescent layer 105 to be in an excited state and generate near-infrared light. The near-infrared light sequentially passes through the light-emitting layer 130 and / or the supporting material layer 140, the organic insulating layer 120, and / or the color filter layer 109 and irradiates the nano-copper sulfide photothermal film. The nano-copper sulfide photothermal film absorbs the near-infrared light and generates heat, thereby heating the surface of the display panel 1000 and improving the anti-fogging performance of the OLED display panel 1000.

[0083] It should be noted that, in the fifth embodiment, the intensity of the near-infrared light generated by the photoluminescent layer 105 can be increased by adjusting the intensity of the light-emitting layer 130, thereby enabling the nano-copper sulfide photothermal film to generate sufficient heat and increase the surface heating temperature of the OLED display panel 1000 to adapt to extreme low temperature and humid environmental conditions.

[0084] The fifth embodiment of the present invention improves the anti-fogging performance of the OLED display panel 1000 by applying a nano-copper sulfide photothermal film and a photoluminescent layer 105 to the OLED display panel 1000. This effectively solves the problem of fogging in the OLED display panel 1000 under low temperature and humid conditions. At the same time, compared with the existing hydrophobic anti-fogging solutions, this solution has a simple structure, does not require special materials or complex manufacturing processes, and has relatively low production costs. Furthermore, it does not require an additional light source and has low power consumption.

[0085] Of course, in the fifth embodiment, the photothermal layer 103 may also be made of other materials that absorb near-infrared light and generate heat, such as carbon nanotubes, graphene, titanium dioxide, gold nanoparticles, silver nanoparticles, or the photothermal layer 103 may be made of other materials that absorb other non-visible light and generate heat. Correspondingly, the photoluminescent layer 105 may emit other corresponding non-visible light.

[0086] Based on the above embodiments, in an optional embodiment of the present invention, the surface temperature of the display panel 1000 when the photothermal layer 103 heats up is 20-30℃ (e.g., 20℃, 22℃, 25℃, 28℃, 30℃ and any range between two endpoints). In this way, in a low-temperature and humid environment, the phenomenon of fogging can be effectively prevented, and the anti-fog performance of the display panel 1000 is good.

[0087] The present invention also proposes a display device, which includes a display panel 1000. The specific structure of the display panel 1000 is as described in the above embodiments. Since the display device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0088] Please see Figure 3 and Figure 4 In one embodiment of the present invention, the display device is a liquid crystal display device, and the display device further includes a backlight module 200. The light-emitting element of the display panel 1000 is a light lamp 104, and the light lamp 104 is fixed to one side of the backlight module 200.

[0089] Specifically, the backlight module 200 includes a backlight source 201, which is side-lit. The backlight module 200 has a conventional structure. The light-emitting lamp 104 can be a near-infrared LED, which is fixedly installed on the side of the backlight module 200 away from the backlight source 201. The fixing method can be adhesive fixing, snap-fit ​​fixing, or other reasonable methods. In this embodiment, the light-emitting lamp 104 is fixedly installed on one side of the backlight module 200, which not only achieves the fixing of the light-emitting lamp 104, but also does not change the original structure of the liquid crystal display device. The fixing operation is simple and effective.

[0090] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A display panel, characterized in that, include: First substrate; A photothermal layer is disposed on one surface of the first substrate; The light-emitting element is disposed on the side of the photothermal layer facing away from the first substrate and can emit non-visible light; The photothermal layer can transmit visible light and absorb non-visible light to generate heat; The light-emitting element is a photoluminescent layer, and the display panel further includes a visible light reflective film layer, which is disposed on the surface of the first substrate facing away from the photoluminescent layer. The photoluminescent layer is made of a long afterglow luminescent material; When an external light source illuminates the display panel, the visible light reflective film reflects the visible light, and the non-visible light passes through the visible light reflective film and the first substrate in sequence before illuminating the photoheating layer. The photoheating layer absorbs near-infrared light from the non-visible light and generates heat. Other non-visible light, except for near-infrared light, passes through the photoheating layer and illuminates the photoluminescent layer. The photoluminescent layer absorbs other non-visible light except for near-infrared light, is in an excited state, and generates near-infrared light. The near-infrared light is absorbed by the photoheating layer and generates heat.

2. The display panel as described in claim 1, characterized in that, The wavelength range of the non-visible light is 800-1000nm, and the material of the photothermal layer is at least one of the following: copper sulfide nanomaterials, carbon nanotubes, graphene, titanium dioxide, gold nanoparticles, and silver nanoparticles; and / or, The thickness of the photothermal layer is 50-100 nm, and the density of the photothermal layer is 1.5-2.0 g / cm³. 3 .

3. The display panel as described in any one of claims 1 to 2, characterized in that, The surface temperature of the display panel when the photothermal layer heats up is 20-30℃.

4. A display device, characterized in that, The display device includes a display panel as claimed in any one of claims 1 to 3.

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