Display panel and display device

Abstract

The invention discloses a display panel and a display device, and relates to the technical field of display, the display panel comprises a first substrate, a light-induced heating layer and a light-emitting part, the light-induced heating layer is arranged on one surface of the first substrate, the light-emitting part is arranged on the side, opposite to the first substrate, of the light-induced heating layer and can emit invisible light, and the light-emitting part is arranged on the other side of the light-induced heating layer. Visible light can penetrate through the light-induced heating layer, and the light-induced heating layer absorbs invisible light to generate heat; according to the technical scheme provided by the invention, the anti-fog performance of the display panel can be improved; meanwhile, the anti-fog performance of the display panel can be further improved by adjusting the luminous intensity of the luminous part, and the display panel is suitable for an extremely low-temperature humid environment; moreover, the structure of the display panel is simple, special materials or complex manufacturing processes are not needed, and the production cost is low. In practical application, the display performance such as permeability and color reducibility of the display panel cannot be affected.

Description

Technical Field

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

[0002] In a low temperature and humid environment, the display panel is prone to fogging. This phenomenon is mainly caused by the 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] At present, 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 a hydrophobic material and utilizing the hydrophobic properties of the hydrophobic material to 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 have better waterproof performance to achieve an anti-fogging effect. However, these methods still have the following problems: (1) special materials or complex manufacturing processes are required, and the production cost is high; (2) in actual applications, the display performance of the panel, such as transmittance and color reproduction, may be affected; (3) in extremely low temperature and humid environments, it may not be able to effectively prevent the formation of fog. Summary of the invention

[0004] The main purpose of the present invention is to provide a display panel and a display device, aiming to improve the anti-fogging performance of the display panel while reducing the production cost without affecting the display performance of the display panel.

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

[0006] a first substrate;

[0007] A photoheat-generating layer is disposed on a surface of the first substrate;

[0008] A light-emitting element, which is arranged on a side of the photoheat-generating layer facing away from the first substrate and can emit invisible light;

[0009] The photoheat-inducing layer can transmit visible light and absorb the invisible 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 of nano copper sulfide photothermal material, carbon nanotubes, graphene, titanium dioxide, gold nanoparticles, and silver nanoparticles; and / or,

[0011] The thickness of the photoheat-generating layer is 50-100 nm, and the density of the photoheat-generating layer is 1.5-2.0 g / cm 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, which is disposed on a surface of the first substrate facing away from the photoheat-generating layer; or

[0014] The light emitting element is a photoluminescent layer, and the display panel further comprises a visible light reflecting film layer, which is arranged on a 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 comprises:

[0016] A plurality of black photoresists are alternately arranged on the surface of the first substrate with the photoheat-inducing layer;

[0017] A color filter film layer is arranged on the surface of the photoheat-generating layer facing away from the first substrate and covers the black photoresist;

[0018] A second substrate is arranged opposite to the color filter layer on a side facing away from the photoheat-generating layer;

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

[0020] The light emitting lamp is arranged on a side of the second substrate facing away from the liquid crystal layer.

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

[0022] A plurality of visible light reflective film layers are arranged at intervals on the surface of the photoheat-generating layer facing away from the first substrate;

[0023] A color filter film layer is arranged on the surface of the photoheat-generating layer facing away from the first substrate and covers the visible light reflecting film layer;

[0024] A second substrate is arranged opposite to the color filter layer on a side facing away from the photoheat-generating layer;

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

[0026] The light emitting lamp is arranged on a side of the second substrate facing away from the liquid crystal layer.

[0027] In one embodiment, the light-emitting component is a photoluminescent layer, and the display panel further includes a color filter film layer, an organic insulating layer, a light-emitting layer and a supporting material layer. The color filter film layer, the organic insulating layer and the light-emitting layer are stacked between the photoheating 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 supporting material layer is filled between two adjacent light-emitting layers.

[0028] In one embodiment, the surface temperature of the display panel when the photoheat-generating layer generates heat is 20-30° C.

[0029] The present invention further provides a display device, which includes the display panel as described above.

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

[0031] According to the technical solution of the present invention, the display panel includes a first substrate, a photoheating layer and a light-emitting element. The photoheating layer is arranged on a surface of the first substrate, and the light-emitting element is arranged on the side of the photoheating layer facing away from the first substrate, and can emit non-visible light. The photoheating layer can transmit visible light and absorb non-visible light to generate heat. Such a setting can make the surface of the display panel heat up, so in a low temperature and humid environment, it can effectively prevent the display panel from fogging, that is, the anti-fog performance of the display panel is good; at the same time, the anti-fog performance of the display panel can be improved by adjusting the luminous intensity of the light-emitting element, which is suitable for extremely low temperature and humid environments. In addition, the structure of the display panel is relatively simple, does not require special materials or complex manufacturing processes, and has a low production cost. In addition, in practical applications, since the photoheating layer can transmit visible light, it will not affect the display performance of the display panel, such as transmittance and color reproduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0033] Figure 1 A schematic diagram of the exploded structure of an embodiment of a display panel provided by the present invention;

[0034] Figure 2 A schematic diagram of the exploded structure of another embodiment of a display panel provided by the present invention;

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

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

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

[0038] Description of Figure Numbers:

[0039] 1000, display panel; 101, first substrate; 102, second substrate; 103, photoheating 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, supporting material layer; 200, backlight module; 201, backlight source; A, visible light; B, non-visible light.

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

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work 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 position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0044] The present invention proposes a display panel 1000 , aiming to improve the anti-fogging performance of the display panel 1000 , while reducing the production cost without affecting the display performance of the display panel 1000 .

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

[0046] Specifically, the first substrate 101 may be a glass substrate, and the photoluminescent layer 103 is made of a photoluminescent material, which can transmit visible light and absorb non-visible light of a specific wavelength to generate heat, such as near-infrared light. The light-emitting element may be a light-emitting 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 photoheating layer 103 can transmit visible light but absorb non-visible light, and the wavelength range of non-visible light absorbed by the photoheating layer 103 must be the same as the wavelength range of non-visible light emitted by the light-emitting component. In this way, the photoheating layer 103 can absorb light more effectively and fully to generate heat, thereby improving the utilization rate of non-visible light.

[0048] The technical solution of the present invention is to set a photoheating layer 103 and a light-emitting element inside the display panel 1000. The photoheating layer 103 can absorb the invisible light emitted by the light-emitting element and generate heat, so that the surface of the display panel 1000 is heated. In a low-temperature and humid environment, the display panel 1000 can be effectively prevented from fogging, that is, the anti-fog performance of the display panel 1000 is good. At the same time, the anti-fog performance of the display panel 1000 can be improved by adjusting the luminous intensity of the light-emitting element, which is suitable for extremely low-temperature and humid environments. In addition, the structure of the display panel 1000 is relatively simple, does not require special materials or complex manufacturing processes, and has a low production cost. In addition, in actual applications, since the photoheating layer 103 can transmit visible light, it will not affect the display performance of the display panel 1000, such as transmittance and color reproduction.

[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 component 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 a specific embodiment of the present invention, the photoheating layer 103 adopts a 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 transmitting nano-high visible light. It can improve the anti-fog performance of the display panel 1000 to adapt to low temperature and humid environments. At the same time, in actual applications, it will not affect the display performance of the display panel 1000, such as transmittance and color reproduction.

[0051] When manufacturing the photoheating layer 103, the thickness and density of the photoheating layer 103 should be reasonably controlled to ensure that the photoheating layer 103 has a good absorptivity of non-visible light and a good transmittance of visible light, thereby avoiding affecting the display performance of the actual panel, such as transmittance and color reproduction. Optionally, the thickness of the photoheating layer 103 is 50-100nm (such as 50nm, 60nm, 70nm, 80nm, 90nm, 100nm and the interval between any two end points), and the density of the photoheating layer 103 is 1.5-2.0g / cm 3 (For example, 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 value 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, wherein the light-emitting lamp 104 can be selected as a non-visible light LED lamp, such as a near-infrared light LED lamp; the photoluminescent layer 105 is made of photoluminescent material, and the photoluminescent material has the property of absorbing non-visible light and making the 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 a specific embodiment of the present invention, the photoluminescent layer 105 is made of a long afterglow luminescent material. In addition to the ability to absorb non-visible light and put the material in an excited state to generate non-visible light, the long afterglow luminescent material also has the ability to store non-visible light. In this way, the display panel 1000 can be used for display in a dark environment.

[0054] Please refer 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 a surface of the first substrate 101 facing away from the photoheat generating layer 103 .

[0055] The application scenario of this embodiment can be a display panel 1000 of a vehicle rearview mirror. The display panel 1000 includes a photothermal layer 103, a first substrate 101 and a reflective film layer 106 which are stacked in sequence. 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 in the range of 50-100 nm, and the density is controlled in the range of 1.5-2.0 g / cm 3 , the nano copper sulfide photothermal film is evenly coated on the surface of the first substrate 101 by vacuum coating. The reflective film layer 106 adopts 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 as 0.1-0.5mm (such as 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm and the interval between any two end points). The light-emitting lamp 104 adopts a near-infrared LED lamp, the rated power of the near-infrared LED lamp can be selected as 1W, and the wavelength range of the light emitted by the near-infrared LED lamp is 800-1000nm, that is, 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 the photoluminescent layer 105. The installation method of the near-infrared LED lamp is not limited, and its spacing value can be determined according to actual conditions, and is not limited here.

[0056] The near-infrared LED lamp is turned on, and the near-infrared LED emits near-infrared light and irradiates the nano-copper sulfide photothermal film. The nano-copper sulfide photothermal film absorbs the near-infrared light and generates heat, so that the surface of the display panel 1000 is heated, thereby improving the anti-fog performance of the display panel 1000.

[0057] It should be noted that the intensity of the near-infrared light emitted can be increased by adjusting the power of the near-infrared LED lamp, thereby increasing the heating temperature of the nano copper sulfide photothermal film, that is, increasing the surface heating temperature of the display panel 1000, to adapt to different low-temperature and humid environmental conditions. In an extremely low-temperature and humid environment, such as an environment with a temperature of minus 20°C and a humidity of 90%, the power of the near-infrared LED lamp can be adjusted from the original 1W to 1.5W, which can increase the intensity of the near-infrared light emitted by the near-infrared LED lamp, thereby allowing the nano copper sulfide photothermal film to generate sufficient heat, that is, the surface heating temperature of the display panel 1000 is higher, and fog is more effectively prevented.

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

[0059] Of course, in the first embodiment, the photoheating layer 103 can 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 photoheating layer 103 is made of materials that absorb other non-visible light and generate heat, and accordingly, the light-emitting lamp 104 uses other corresponding non-visible light LED lamps.

[0060] See also 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 reflecting film layer 107 , which is disposed on a surface of the first substrate 101 facing away from the photoluminescent 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 which are stacked in sequence. 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 in the range of 50-100 nm, and the density is controlled in the range of 1.5-2.0 g / cm 3 The nano copper sulfide photothermal film is uniformly coated on the surface of the first substrate 101 by vacuum coating. The visible light reflective film layer 107 is made of visible light reflective material and has a good reflective effect on visible light. The visible light reflective material can be selected from metal oxides, such as zinc oxide and titanium oxide. The thickness of the visible light reflective film layer 107 can be selected from 0.1-0.5 mm (such as 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm and any interval between the two end points). The photoluminescent layer 105 is arranged on the side of the photoheating layer 103 facing away from the first substrate 101, and there is a certain distance between the photoluminescent layer 105 and the photoluminescent layer 105, and the distance value can be determined according to actual conditions and is not limited here; the photoluminescent layer 105 is made of photoluminescent material, and the photoluminescent material has the performance of absorbing near-infrared light and making the material in an excited state to generate near-infrared light. Optionally, the photoluminescent layer 105 is made of long afterglow luminescent material, and the long afterglow luminescent material has the performance of absorbing non-visible light, storing non-visible light, and making the material in an excited state to generate non-visible light, so that the display panel 1000 can be displayed in a daytime environment or in a night environment; optionally, the thickness of the photoluminescent layer 105 can be selected as 0.1-5mm (for example, 0.1mm, 1mm, 2mm, 3mm, 4mm, 5mm and the interval value between any two end points).

[0062] When an external light source illuminates the display panel 1000, the visible light reflection film layer 107 reflects the visible light, and the non-visible light passes through the visible light reflection film layer 107 and the first substrate 101 in turn and then illuminates the nano-copper sulfide photothermal film. The nano-copper sulfide photothermal film absorbs near-infrared light in the non-visible light, and the other light in the non-visible light except the near-infrared light passes through the nano-copper sulfide photothermal film and then illuminates the photoluminescent layer 105. The photoluminescent layer 105 absorbs the other light in the non-visible light except the near-infrared light, is in an excited state and generates near-infrared light. The near-infrared light illuminates the nano-copper sulfide photothermal film, and the nano-copper sulfide photothermal film absorbs the near-infrared light and generates heat, so that the surface of the display panel 1000 is heated, thereby 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 illumination 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 environmental 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 the outdoor reflective device by applying the nano copper sulfide photothermal film and the photoluminescent layer 105 to the display panel 1000 of the vehicle rearview mirror or the outdoor reflective device, and effectively solves the problem that the display panel 1000 in the vehicle rearview mirror or the outdoor reflective device is prone to fogging in a low temperature and humid environment. 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 a relatively low production cost; and compared with the first embodiment, no additional light source is required, and the power consumption is lower.

[0065] Of course, in the second embodiment, the photoheating layer 103 can 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 photoheating layer 103 is made of materials that absorb other non-visible light and generate heat, and accordingly, the photoluminescent layer 105 can emit other corresponding non-visible light.

[0066] See also 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 film layer 109, a second substrate 102 and a liquid crystal layer 110, wherein the plurality of black photoresists 108 and the photoheat-generating layer 103 are alternately arranged on the surface of the first substrate 101; the color filter film layer 109 is arranged on the surface of the photoheat-generating layer 103 facing away from the first substrate 101 and covers the black photoresist 108; the second substrate 102 is relatively arranged on the side of the color filter film layer 109 facing away from the photoheat-generating layer 103; the liquid crystal layer 110 is arranged between the second substrate 102 and the color filter film layer 109; and the light-emitting lamp 104 is arranged 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 arranged opposite to each other and can be transparent glass substrates. The photothermal layer 103 can be 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 / cm 3, the nano copper sulfide photothermal film is uniformly coated on the surface of the first substrate 101 by vacuum coating. The color filter film layer 109 includes three color film layers of red, green and blue, the black photoresist 108 is a black light-shielding area between different color filter film layers 109, the photothermal layer 103 includes a plurality of spaced split structures, the split structures and the black photoresist 108 are alternately arranged, and the color filter film layer 109 covers the entire nano copper sulfide photothermal film and all 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 film layer 109 and the liquid crystal layer 110 are all conventionally configured, and the first substrate 101, the second substrate 102, the color filter film layer 109 and the liquid crystal layer 110 can all transmit visible light. For details, please refer to the current technology, and will not be repeated here. The light emitting lamp 104 adopts a near-infrared LED lamp. The rated power of the near-infrared LED lamp can be selected as 1W. The wavelength range of light emitted by the near-infrared LED lamp is 800-1000nm, that is, near-infrared light. The near-infrared LED lamp 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). There is no limitation on the installation method of the near-infrared LED lamp.

[0068] When the near-infrared LED lamp is turned on, the near-infrared LED emits near-infrared light which sequentially passes through the second substrate 102, the liquid crystal layer 110, and 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, so that the surface of the liquid crystal display panel 1000 is heated, thereby 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 near-infrared light emitted by adjusting the power of the near-infrared LED lamp, thereby increasing the heating temperature of the nano copper sulfide photothermal film, that is, increasing the surface heating temperature of the liquid crystal display panel, to adapt to different low-temperature and humid environmental conditions. In an extremely low-temperature and humid environment, such as an environment with a temperature of minus 20°C and a humidity of 90%, the power of the near-infrared LED lamp can be adjusted from the original 1W to 1.5W, so that the intensity of the near-infrared light emitted by the near-infrared LED lamp is greatly increased, thereby allowing the nano copper sulfide photothermal film to generate sufficient heat, that is, the surface heating temperature of the liquid crystal display panel 1000 is higher, and fog is more effectively prevented from being generated.

[0070] The third embodiment of the present invention improves the anti-fog performance of the liquid crystal display panel 1000 by applying the nano copper sulfide photothermal film and the near-infrared LED lamp to the liquid crystal display panel 1000, and effectively solves the problem that the liquid crystal display panel 1000 is prone to fogging in a low temperature and humid environment. 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 a relatively low production cost, and does not rely on external light sources, and has a wide range of application scenarios. In addition, since the nano copper sulfide photothermal film has the characteristic of being transparent to visible light, it will not affect the display performance of the liquid crystal display panel 1000, such as transmittance and color reproduction.

[0071] Of course, in the third embodiment, the photoheating layer 103 can 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 photoheating layer 103 is made of materials that absorb other non-visible light and generate heat, and accordingly, the light-emitting lamp 104 uses other corresponding non-visible light LED lamps.

[0072] See also 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 reflecting film layers 107, a color filter film layer 109, a second substrate 102 and a liquid crystal layer 110. The plurality of visible light reflecting film layers 107 are arranged at intervals on the surface of the photoheat-generating layer 103 facing away from the first substrate 101; the color filter film layer 109 is arranged on the surface of the photoheat-generating layer 103 facing away from the first substrate 101, and covers the visible light reflecting film layer 107; the second substrate 102 is relatively arranged on the side of the color filter film layer 109 facing away from the photoheat-generating layer 103; the liquid crystal layer 110 is arranged between the second substrate 102 and the color filter film layer 109; and the light-emitting lamp 104 is arranged 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, and the difference from the third embodiment is that the present embodiment uses a visible light reflective film layer 107 to replace the black photoresist 108 of the third embodiment, and a plurality of visible light reflective film layers 107 are provided, and the plurality of visible light reflective film layers 107 are arranged at intervals on the surface of the photoheat-generating layer 103 facing away from the first substrate 101. The specific arrangement of the first substrate 101, the color filter film layer 109, the second substrate 102, the liquid crystal layer 110 and the light-emitting lamp 104 can refer to the third embodiment, and will not be described one by one here.

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

[0075] Optionally, the thickness of the visible light reflecting film layer 107 is 0.1-0.5 mm (such as 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm and any interval between the two end points).

[0076] It should be noted that the fourth embodiment can increase the intensity of the near-infrared light emitted by adjusting the power of the near-infrared LED lamp, thereby increasing the heating temperature of the nano copper sulfide photothermal film, that is, increasing the surface heating temperature of the liquid crystal display panel 1000, to adapt to different low-temperature and humid environmental conditions. In an extremely low-temperature and humid environment, such as an environment with a temperature of minus 20°C and a humidity of 90%, the power of the near-infrared LED lamp can be adjusted from the original 1W to 1.5W, so that the intensity of the near-infrared light emitted by the near-infrared LED lamp is greatly increased, thereby allowing the nano copper sulfide photothermal film to generate sufficient heat, that is, the surface heating temperature of the liquid crystal display panel 1000 is higher, and fog is more effectively prevented from being generated.

[0077] The fourth embodiment of the present invention improves the anti-fog performance of the liquid crystal display panel 1000 by applying the nano copper sulfide photothermal film, the near-infrared LED lamp and the visible light reflective film layer 107 (replacing the original black photoresist 108) to the liquid crystal display panel 1000, and effectively solves the problem that the liquid crystal display panel 1000 is prone to fogging in a low temperature and humid environment. 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 a relatively low production cost, and does not rely on external light sources, and has a wide range of application scenarios. In addition, since the nano copper sulfide photothermal film has the characteristic of being transparent to visible light, it will not affect the display performance of the liquid crystal display panel 1000, such as transmittance and color reproduction.

[0078] Compared to the third embodiment, in the fourth embodiment of the present invention, since the visible light reflecting film layer 107 is arranged on the surface of the nano-copper sulfide photothermal film instead of inside thereof, the portion of the nano-copper sulfide photothermal film corresponding to the visible light reflecting film layer 107 can still absorb near-infrared light and generate heat, thereby 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 photoheating layer 103 can 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 photoheating layer 103 is made of materials that absorb other non-visible light and generate heat, and accordingly, the light-emitting lamp 104 uses other corresponding non-visible light LED lamps.

[0080] See also Figure 5 In the fifth embodiment of the present invention, the light-emitting component is a photoluminescent layer 105, and the display panel 1000 also includes a color filter film layer 109, an organic insulating layer 120, a light-emitting layer 130 and a supporting material layer 140. The color filter film layer 109, the organic insulating layer 120, and the light-emitting layer 130 are stacked between the photoheating layer 103 and the photoluminescent layer 105 in a direction away from the first substrate 101. Multiple light-emitting layers 130 are arranged at intervals and connected, and the supporting material layer 140 is filled between two adjacent light-emitting layers 130.

[0081] In this embodiment, the display panel 1000 is an organic light emitting diode (OLED) display panel, and the OLED display panel includes a first substrate 101, a photoheating 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 stacked in sequence. Among them, the first substrate 101 can be selected as a glass substrate, and the photoheating layer 103 is a nano copper sulfide photothermal film. The thickness of the nano copper sulfide photothermal film is controlled in the range of 50-100nm, and the density is controlled in the range of 1.5-2.0g / cm 3 The nano copper sulfide photothermal film is uniformly coated on the surface of the first substrate 101 by vacuum coating. The color filter film layer 109 includes three color film layers of red, green and blue; the organic insulating layer 120 is made of organic insulating material and plays the role of flattening the color filter film layer 109, and 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 via the anode layer 131. A support material layer 140 is filled between two adjacent light-emitting layers 130, and a surface of the support material layer 140 is flush with a surface of the cathode layer 133, so as to support the photoluminescent layer 105. The support material used by the support material layer 140 is a transparent insulating material, and the transparent insulating material is filled between two adjacent light-emitting layers 130, and a surface of the support material layer 140 is flush with a surface of the light-emitting layer 130, so as to facilitate the deposition and production of the photoluminescent layer 105.

[0082] In the embodiment of the present invention, a nano copper sulfide photothermal film (i.e., photothermal layer 103) and a photoluminescent layer 105 are arranged in the OLED display panel. The photoluminescent layer 105 absorbs the light source emitted by the light emitting layer 130 and then excites and generates near-infrared light, which is absorbed by the nano copper sulfide photothermal film to generate heat, and then the OLED display panel generates heat to achieve anti-fogging performance. Specifically, under the voltage of the cathode layer 133 and the anode layer 131, the organic material layer 132 emits light and irradiates the photoluminescent layer 105 through the cathode layer 133, so that the photoluminescent layer 105 is in an excited state and generates near-infrared light. The near-infrared light sequentially transmits the light emitting layer 130 and / or the supporting material layer 140, the organic insulating layer 120 and / or the color filter film layer 109 and irradiates the nano copper sulfide photothermal film. The nano copper sulfide photothermal film absorbs the near-infrared light and generates heat, so that the surface of the display panel 1000 is heated, and the anti-fogging performance of the OLED display panel 1000 is improved.

[0083] It should be noted that the fifth embodiment can increase the intensity of the near-infrared light generated by the photoluminescent layer 105 by adjusting the intensity of the light-emitting layer 130, thereby allowing 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-fog performance of the OELD display panel 1000 by applying the nano-copper sulfide photothermal film and the photoluminescent layer 105 to the OELD display panel 1000, and effectively solves the problem that the OELD display panel 1000 is prone to fogging in a low temperature and humid environment. 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 a relatively low production cost; and, no additional light source is required, and the power consumption is low.

[0085] Of course, in the fifth embodiment, the photoheating layer 103 can 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 photoheating layer 103 is made of materials that absorb other non-visible light and generate heat, and accordingly, the photoluminescent layer 105 can 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 photoheating layer 103 is heated is 20-30°C (for example, 20°C, 22°C, 25°C, 28°C, 30°C and an interval value between any two end points). In this way, in a low temperature and humid environment, the occurrence of fog can be effectively prevented, and the display panel 1000 has good anti-fog performance.

[0087] The present invention further proposes a display device, which includes a display panel 1000. The specific structure of the display panel 1000 refers to the above embodiment. Since the display device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0088] See also 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 component of the display panel 1000 is a light-emitting lamp 104 , and the light-emitting 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 a side-entry type. The specific structural setting of the backlight module 200 is a conventional setting. The light emitting lamp 104 can be a near-infrared LED lamp, which is fixedly installed on the other side of the backlight module 200 away from the backlight source 201. The fixing and installation method can be adhesive fixing, clamping 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 realizes 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 only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A display panel, characterized in that: include: a first substrate; A photoheat-generating layer is disposed on a surface of the first substrate; A light-emitting element, which is arranged on a side of the photoheat-generating layer facing away from the first substrate and can emit invisible light; The photoheat-inducing layer can transmit visible light and absorb the invisible light to generate heat.

2. The display panel according to claim 1, wherein: The wavelength range of the non-visible light is 800-1000nm, and the material of the photothermal layer is at least one of nano copper sulfide photothermal material, carbon nanotubes, graphene, titanium dioxide, gold nanoparticles, and silver nanoparticles; and / or, The thickness of the photoheat-generating layer is 50-100 nm, and the density of the photoheat-generating layer is 1.5-2.0 g / cm 3 .

3. The display panel according to claim 1, wherein: The light-emitting element is a light-emitting lamp or a photoluminescent layer.

4. The display panel according to claim 3, wherein: The light-emitting element is a light-emitting lamp, and the display panel further comprises a reflective film layer, which is arranged on a surface of the first substrate facing away from the photoheat-generating layer; or The light emitting element is a photoluminescent layer, and the display panel further comprises a visible light reflecting film layer, which is arranged on a surface of the first substrate facing away from the photoluminescent layer.

5. The display panel according to claim 3, wherein: The light-emitting element is a light-emitting lamp, and the display panel further comprises: A plurality of black photoresists are alternately arranged on the surface of the first substrate with the photoheat-inducing layer; A color filter film layer is arranged on the surface of the photoheat-generating layer facing away from the first substrate and covers the black photoresist; A second substrate is arranged opposite to the color filter layer on a side facing away from the photoheat-generating layer; A liquid crystal layer, disposed between the second substrate and the color filter film layer; The light emitting lamp is arranged on a side of the second substrate facing away from the liquid crystal layer.

6. The display panel according to claim 3, wherein: The light-emitting element is a light-emitting lamp, and the display panel further comprises: A plurality of visible light reflective film layers are arranged at intervals on the surface of the photoheat-generating layer facing away from the first substrate; A color filter film layer is arranged on the surface of the photoheat-generating layer facing away from the first substrate and covers the visible light reflecting film layer; A second substrate is arranged opposite to the color filter layer on a side facing away from the photoheat-generating layer; A liquid crystal layer, disposed between the second substrate and the color filter film layer; The light emitting lamp is arranged on a side of the second substrate facing away from the liquid crystal layer.

7. The display panel according to claim 3, wherein: The light-emitting element is a photoluminescent layer, and the display panel further comprises a color filter film layer, an organic insulating layer, a light-emitting layer and a supporting material layer, wherein the color filter film layer, the organic insulating layer and the light-emitting layer are stacked and arranged between the photoheat-inducing layer and the photoluminescent layer in a direction away from the first substrate; The light-emitting layers are arranged in a plurality and connected to each other at intervals, and the support material layer is filled between two adjacent light-emitting layers.

8. The display panel according to any one of claims 1 to 7, characterized in that: The surface temperature of the display panel when the photoheat-generating layer generates heat is 20-30°C.

9. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 8.

10. The display device according to claim 9, characterized in that The display device further comprises a backlight module. The light-emitting element of the display panel is a light-emitting lamp, and the light-emitting lamp is fixed to one side of the backlight module.

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