Temperature adjusting nano composite film
By using alternately arranged metal oxide layers and nanometal layers in the LED imaging insulation film, the problem of the insulating film cannot be heated at low temperature and the polarizer is insufficient in the prior art, the effects of heat insulation, resistance to infrared and high transmittance are achieved, and the low temperature heating function is provided.
Patent Information
- Application Number
- CN202421208631.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-05-30
AI Technical Summary
The existing LED development heat insulation film cannot be heated at low temperature after setting, and the polarizer has insufficient stability and life, high process difficulty, and is not as direct barrier as inorganic films in blocking infrared bands.
A temperature-regulated nanocomposite film is provided, including a transparent substrate and a nanocomposite film layer disposed on one side of the substrate. The nanocomposite film layer consists of alternately arranged metal oxide layers and nanometal layers, and optionally an additional silicon compound layer to achieve heat insulation, infrared resistance and high transmittance effects.
It realizes the effects of thermal insulation, infrared, ultraviolet, and high transmittance of visible light, and has low temperature heating functions, which improves the flexibility and customization of the display module.
Smart Images
Figure CN222636317U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of thin film materials of display technology, and specifically relates to a temperature regulating nano composite film. Background Art
[0002] LED (light emitting diode) is a solid-state semiconductor device that can directly convert electrical energy into light energy. In LED display thermal insulation film, LED is integrated into the film material, and the image can be displayed by controlling the light emission of LED. This technology makes LED display thermal insulation film highly flexible and customizable, and can display different images or information as needed.
[0003] In the prior art, a polarizer is usually used to absorb light, absorbing half of the external light intensity. The polarizer is only suitable for linear polarization (LCD) display image sources, and the transmission direction must be precisely aligned with the polarization direction of the linear polarization image source. The process is difficult and the life and stability are poor. In addition, the existing thermal insulation film cannot perform low-temperature heating after being formed, and the polarizer is mostly made of organic materials, which are not as stable as inorganic materials. The linear polarizer absorbs external light intensity for insulation, which is not as good as the inorganic film directly blocking the infrared band. In addition, due to the assembly precision and the three-dimensional structure of the dye molecule, the polarizer will always cause more brightness loss.
[0004] Therefore, there is an urgent need to provide a temperature-regulating nanocomposite film having the advantages of heat insulation, anti-infrared, anti-ultraviolet, and high visible light transmittance. Utility Model Content
[0005] Based on the defects of the prior art, the first purpose of the utility model is to provide a temperature-regulating nano-composite film with the advantages of heat insulation, anti-infrared, anti-ultraviolet, and high visible light transmittance. The temperature-regulating nano-composite film can be used in display technologies such as liquid crystal displays and OLEDs.
[0006] The purpose of the utility model is achieved through the following technical solutions:
[0007] On the one hand, the utility model provides a temperature-regulating nano-composite film, which comprises a transparent substrate and a nano-composite film layer arranged on one surface of the transparent substrate (located on the surface of the substrate facing the outside air (not the internal space of the display module)); the nano-composite film layer comprises a metal oxide layer and a nano-metal layer, and the metal oxide layer and the nano-metal layer are alternately arranged in sequence in a direction away from the transparent substrate; the metal oxide layer is arranged to have 1 to 9 layers; the nano-metal layer is arranged to have 1 to 9 layers.
[0008] In the above-mentioned temperature regulating nanocomposite film, preferably, the metal oxide of the metal oxide layer is selected from one or more combinations of Nb2O5, TiO2, Ta2O5, ITO (indium tin oxide), ATO (antimony tin oxide), FTO (fluorine tin oxide), but not limited thereto. Among them, ITO, ATO, and FTO are doped metal oxides. Considering the transparency required by the display module, the difficulty and cost of the coating process, etc., it is possible to consider using doped metal oxides to replace and reduce the number of layers. The metal oxide is evenly distributed in the metal oxide layer.
[0009] In the above-mentioned temperature-regulating nanocomposite film, preferably, the metal oxide layer is set to 2 to 5 layers in consideration of process friendliness and optical effect.
[0010] In the above-mentioned temperature-regulating nanocomposite film, preferably, the thickness of a single metal oxide layer is 5 to 100 nm; in consideration of process friendliness and optical effect, it is more preferably 20 to 75 nm.
[0011] In the above-mentioned temperature regulating nanocomposite film, preferably, the metal of the nanometal layer is selected from one or more combinations of Au, Ag, Cu and Al; but not limited thereto, Ag is more preferably used. Through the inherent characteristics of Ag and the interference effect of the metal oxide nanofilm, the light in the infrared band is eliminated. Metals such as Au, Ag, Cu, and Al are evenly distributed in the nanometal layer.
[0012] In the above-mentioned temperature-regulating nanocomposite film, preferably, the nanometal layer is set to 1 to 3 layers in consideration of process friendliness and optical effect.
[0013] In the above-mentioned temperature-regulating nanocomposite film, preferably, the single-layer thickness of the nanometal layer is 5 to 30 nm; considering process friendliness and optical effect, it is more preferably 10 to 20 nm.
[0014] In the above-mentioned temperature-regulating nanocomposite film, preferably, the transparent substrate is selected from one of glass materials, resin materials, rigid materials or flexible materials, but is not limited thereto.
[0015] In the above temperature regulating nanocomposite film, preferably, the temperature regulating nanocomposite film further comprises a silicon compound layer, which is used as a partial replacement of the metal oxide layer. By adding the silicon compound layer, the transmittance of the light band can be improved by using refractive index matching.
[0016] In the above-mentioned temperature regulating nanocomposite film, preferably, the silicon compound of the silicon compound layer is selected from silicon oxide SiO x 、Silicon Nitride SiN x or silicon oxynitride SiO x Ny The silicon compound layer may have the same refractive index or a combination of multiple different refractive indices. The silicon oxide, silicon nitride or silicon oxynitride is uniformly distributed in the silicon compound layer.
[0017] In the above-mentioned temperature-regulating nanocomposite film, preferably, the silicon compound layer is set to 1 to 9 layers; considering process friendliness and optical effect, it is more preferably 2 to 5 layers.
[0018] In the above-mentioned temperature-regulating nanocomposite film, preferably, the thickness of a single layer of the silicon compound layer is 5 to 200 nm, and more preferably 50 to 150 nm.
[0019] In the above-mentioned temperature regulating nano-composite film, preferably, the temperature regulating nano-composite film includes a transparent substrate and a nano-composite film layer arranged on the surface of one side of the transparent substrate; the nano-composite film layer includes a metal oxide layer, a nano-metal layer and a silicon compound layer, and in the direction away from the transparent substrate, the metal oxide layer and the nano-metal layer are alternately arranged in sequence; alternating 1 to 2 times; then the silicon compound layer, the nano-metal layer and the silicon compound layer are alternately arranged in sequence; alternating 1 to 2 times.
[0020] In the above-mentioned temperature regulating nano-composite film, preferably, the temperature regulating nano-composite film also includes a silicon compound layer; the metal oxide layer and the nano-metal layer are alternately arranged to constitute a first composite film layer; on the first composite film layer, the metal oxide layer and the silicon compound layer are alternately arranged to constitute a second composite film layer; on the second composite film layer, an anti-fingerprint coating is also arranged.
[0021] In the above-mentioned temperature-regulating nano-composite film, preferably, in the first composite film layer, the metal oxide layer and the nano-metal layer are alternately arranged 1 to 9 times; preferably 2 to 5 times.
[0022] In the above-mentioned temperature regulating nano-composite film, preferably, in the second composite film layer, the metal oxide layer and the silicon compound layer are alternately arranged 1 to 9 times; preferably 1 to 3 times; wherein, in the direction away from the transparent substrate, the refractive index of the silicon compound layer shows an equal or gradually decreasing trend.
[0023] In the above-mentioned temperature-regulating nano-composite film, preferably, the metal oxide layers in the first composite film layer and the second composite film layer are metal oxides of the same material.
[0024] In the above-mentioned temperature regulating nanocomposite film, preferably, the silicon compound of the silicon compound layer is selected from silicon oxide SiO x 、Silicon Nitride SiN x or silicon oxynitride SiO x Ny , but not limited to this. By adding a silicon compound layer and utilizing refractive index matching, the transmittance of the light band can be improved. Silicon oxide, silicon nitride or silicon oxynitride is uniformly distributed in the silicon compound layer.
[0025] In the above-mentioned temperature-regulating nanocomposite film, preferably, the thickness of a single layer of the silicon compound layer is 5 to 200 nm, and more preferably 50 to 150 nm.
[0026] In the above-mentioned temperature regulating nanocomposite film, preferably, the film thickness of the anti-fingerprint coating is 10-30 nm. The material of the anti-fingerprint coating is a conventional material in the art, such as magnesium fluoride or fluorine-containing compounds, but not limited thereto.
[0027] On the other hand, the utility model also provides a method for preparing the temperature regulating nanocomposite film, which forms corresponding film layers in sequence on the surface of a transparent substrate in a stacking order by means of film forming;
[0028] The film forming method is selected from one or more of physical vapor deposition, chemical vapor deposition, spraying, evaporation and coating.
[0029] In the above preparation methods, preferably, physical vapor deposition is used for the metal oxide layer and the nanometal layer; chemical vapor deposition is used for the silicon compound layer; and evaporation, physical vapor deposition or spraying is used for the anti-fingerprint coating.
[0030] On the other hand, the utility model also provides the application of the temperature regulating nano-composite film or the temperature regulating nano-composite film prepared by the preparation method in liquid crystal display and OLED display technology.
[0031] Beneficial effects of the utility model:
[0032] The temperature regulating nano composite film of the utility model is formed by coating a composite nano film containing nano metal, metal oxide and silicon compound on the surface of a transparent substrate, and achieves the effects of dustproof, heat insulation and anti-ultraviolet in the form of an inorganic film. At the same time, after further power is supplied, it can also perform a heating function. The composite film of the utility model has the advantages of heat insulation, anti-infrared, anti-ultraviolet, and high visible light transmittance.
[0033] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0035] Figure 1 This is a schematic diagram of the structure of the composite membrane of Example 1 of the utility model.
[0036] Figure 2 This is a spectrum distribution diagram of the transmittance of the composite membrane of Example 1 of the utility model.
[0037] Figure 3 This is a spectrum distribution diagram of the transmittance of the composite film of Example 1 of the utility model in the near-infrared medium and short wave range.
[0038] Figure 4 This is a transmittance spectrum distribution diagram of the composite film in the visible light range of Example 1 of the utility model.
[0039] Figure 5 This is a transmittance distribution diagram of the composite membrane of Example 1 of the utility model after 500 film thickness fluctuation experiments.
[0040] Figure 6 This is a hue distribution diagram of the composite film of Example 1 of the utility model after 500 film thickness fluctuation experiments.
[0041] Figure 7 This is a schematic diagram of the structure of the composite membrane of Example 2 of the utility model.
[0042] Figure 8 This is a spectrum distribution diagram of the transmittance of the composite membrane of Example 2 of the utility model.
[0043] Fig. 9 This is a spectrum distribution diagram of the transmittance of the composite film of Example 2 of the utility model in the near-infrared medium and short wave range.
[0044] Fig.10 This is a spectrum distribution diagram of the transmittance of the composite film in the visible light range of Example 2 of the utility model.
[0045] Fig.11 This is a transmittance distribution diagram of the composite membrane of Example 2 of the utility model after 500 film thickness fluctuation experiments.
[0046] Fig.12 This is a hue distribution diagram of the composite film of Example 2 of the utility model after 500 film thickness fluctuation experiments.
[0047] Fig.13This is a schematic diagram of the structure of the composite membrane of Example 3 of the utility model.
[0048] Fig.14 This is a spectrum distribution diagram of the transmittance of the composite membrane of Example 3 of the utility model.
[0049] Fig.15 This is a spectrum distribution diagram of the transmittance of the composite film of Example 3 of the utility model in the near-infrared medium and short wave range.
[0050] Fig.16 This is a transmittance spectrum distribution diagram of the composite film in the visible light range of Example 3 of the utility model.
[0051] Fig.17 This is a transmittance distribution diagram of the composite membrane of Example 3 of the utility model after 500 film thickness fluctuation experiments.
[0052] Fig.18 This is a hue distribution diagram of the composite film of Example 3 of the utility model after 500 film thickness fluctuation experiments.
[0053] Fig.19 This is a schematic diagram of the structure of the composite membrane of Example 4 of the utility model.
[0054] Fig. 20 This is a spectrum distribution diagram of the transmittance of the composite membrane of Example 4 of the utility model.
[0055] Fig.21 This is a spectrum distribution diagram of the transmittance of the composite film of Example 4 of the utility model in the near-infrared medium and short wave range.
[0056] Fig. 22 This is a spectrum distribution diagram of the transmittance of the composite film in the visible light range of Example 4 of the utility model.
[0057] Fig.23 This is a transmittance distribution diagram of the composite membrane of Example 4 of the utility model after 500 film thickness fluctuation experiments.
[0058] Fig.24 This is a hue distribution diagram of the composite film of Example 4 of the utility model after 500 film thickness fluctuation experiments.
[0059] Fig.25 The structure of the composite membrane of Example 5 of the utility model is shown in FIG. Figure 1 .
[0060] Fig.26 The structure of the composite membrane of Example 5 of the utility model is shown in FIG. Figure 2 .
[0061] Fig. 27 The structure of the composite membrane of Example 5 of the utility model is shown in FIG. Figure 3 .
[0062] Fig.28 This is an application example of the utility model and a working principle diagram of the electric heating of the composite film of the utility model. DETAILED DESCRIPTION
[0063] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. The process, conditions, reagents, experimental methods (for example: physical vapor deposition, chemical vapor deposition), etc. for implementing the utility model, except for the contents specifically mentioned below, are common knowledge and common common sense in the field, and the utility model does not have any special restrictions.
[0064] Embodiment 1:
[0065] This embodiment provides a temperature regulating nanocomposite film and a preparation method thereof, such as Figure 1 As shown, the composite film of this embodiment is a metal oxide layer and a nano metal layer stacked in sequence on the surface of a transparent glass substrate; wherein, the metal oxide layer is 3 layers, the nano metal layer is 2 layers, and the parameters of each layer are shown in Table 1 below.
[0066] Table 1 Film layer distribution and thickness of the composite film of this embodiment
[0067]
[0068] Note: The thickness of the transparent glass substrate is 0.5 mm.
[0069] The specific preparation method of the composite film in this embodiment is:
[0070] (1) forming a first metal oxide layer on the surface of a transparent glass substrate, wherein the first metal oxide layer is a niobium pentoxide (Nb2O5) layer;
[0071] The film forming method is physical vapor deposition.
[0072] (2) forming a first nano-metal layer on the surface of the first metal oxide layer, wherein the first nano-metal layer is a silver (Ag) layer;
[0073] The film forming method is physical vapor deposition.
[0074] (3) forming a second metal oxide layer on the surface of the first nano-metal layer, wherein the second metal oxide layer is a niobium pentoxide (Nb2O5) layer;
[0075] The film forming method is physical vapor deposition.
[0076] (4) forming a second nanometal layer on the surface of the second metal oxide layer, wherein the second nanometal layer is a silver (Ag) layer;
[0077] The film forming method is physical vapor deposition.
[0078] (5) forming a third metal oxide layer on the surface of the second nano-metal layer, wherein the third metal oxide layer is a niobium pentoxide (Nb2O5) layer;
[0079] The film forming method is physical vapor deposition.
[0080] Through the above film forming method, the composite film of this embodiment is finally prepared.
[0081] Example 1 Test experiment:
[0082] The composite membrane prepared in this example was tested for transmittance spectrum (the experimental results are shown in Figure 2 As shown) and transmittance spectrum test in the near-infrared mid- and short-wave range (the experimental results are shown in Figure 3 ). Figure 3 The experimental results show that the composite film of this embodiment has a low transmittance in the near-infrared medium and short-wave range and can effectively block the heat of external infrared radiation.
[0083] Furthermore, the transmittance spectrum of the composite film of this embodiment was tested in the visible light range, and the experimental results are as follows: Figure 4 As shown. Figure 4 The experimental results show that the composite film of this embodiment has a high transmittance in the visible light band and does not lose too much display brightness.
[0084] Furthermore, considering the influence of the coating process error, the composite film of this embodiment was subjected to 500 film thickness fluctuation experiments. The experimental results are shown in Table 2 and Figure 5 and Figure 6 shown.
[0085] Table 2 Statistics of transmittance and hue fluctuations after 500 film thickness fluctuation experiments
[0086] Typ. Min. Max. T％ 78.70 72.70 81.85 a* 0.19 -2.25 1.98 b* -2.04 -3.56 0.76
[0087] Depend on Figure 5 The experimental results show that after 500 film thickness fluctuation experiments, the transmittance of the composite film of this embodiment is concentrated at about 78% to 80%, and the transmittance loss is small. Figure 6 The experimental results show that after 500 film thickness fluctuation experiments, the transmission hue of the composite film of this embodiment is concentrated around the neutral hue (0, -2), so it will not cause color deviation of the display screen.
[0088] Embodiment 2:
[0089] This embodiment provides a temperature regulating nanocomposite film and a preparation method thereof, such as Figure 7 As shown, the composite film of this embodiment is a metal oxide layer and a nano metal layer stacked in sequence on the surface of a transparent glass substrate; wherein, the metal oxide layer is 4 layers, the nano metal layer is 3 layers, and the parameters of each layer are shown in Table 3 below.
[0090] Table 3 Film layer distribution and thickness of the composite film of this embodiment
[0091]
[0092] Note: The thickness of the transparent glass substrate is 0.5 mm.
[0093] The specific preparation method of the composite film in this embodiment is:
[0094] (1) forming a first metal oxide layer on the surface of a transparent glass substrate, wherein the first metal oxide layer is a niobium pentoxide (Nb2O5) layer;
[0095] The film forming method is physical vapor deposition.
[0096] (2) forming a first nano-metal layer on the surface of the first metal oxide layer, wherein the first nano-metal layer is a silver (Ag) layer;
[0097] The film forming method is physical vapor deposition.
[0098] (3) forming a second metal oxide layer on the surface of the first nano-metal layer, wherein the second metal oxide layer is a niobium pentoxide (Nb2O5) layer;
[0099] The film forming method is physical vapor deposition.
[0100] (4) forming a second nanometal layer on the surface of the second metal oxide layer, wherein the second nanometal layer is a silver (Ag) layer;
[0101] The film forming method is physical vapor deposition.
[0102] (5) forming a third metal oxide layer on the surface of the second nano-metal layer, wherein the third metal oxide layer is a niobium pentoxide (Nb2O5) layer;
[0103] The film forming method is physical vapor deposition.
[0104] (6) forming a third nano-metal layer on the surface of the third metal oxide layer, wherein the third nano-metal layer is a silver (Ag) layer;
[0105] The film forming method is physical vapor deposition.
[0106] (7) forming a fourth metal oxide layer on the surface of the third nano-metal layer, wherein the fourth metal oxide layer is a niobium pentoxide (Nb2O5) layer;
[0107] The film forming method is physical vapor deposition.
[0108] Through the above film forming method, the composite film of this embodiment is finally prepared.
[0109] Example 2 Test experiment:
[0110] The composite membrane prepared in this example was tested for transmittance spectrum (the experimental results are shown in Figure 8 As shown) and transmittance spectrum test in the near-infrared mid- and short-wave range (the experimental results are shown in Fig. 9 ). Fig. 9 The experimental results show that by increasing the number of sub-layers, the transmittance of the composite film of this embodiment in the near-infrared medium and short wave range is lower, so its heat insulation effect is better.
[0111] Furthermore, the transmittance spectrum of the composite film of this embodiment was tested in the visible light range, and the experimental results are as follows: Fig.10 As shown. Fig.10 The experimental results show that due to the increase in film layers, its transmittance will be lost in the long-wave range of visible light, but it is still around 76%, which does not cause excessive loss.
[0112] Furthermore, considering the influence of the coating process error, the composite film of this embodiment was subjected to 500 film thickness fluctuation experiments. The experimental results are shown in Table 4 and Fig.11 and Fig.12 shown.
[0113] Table 4 Statistics of transmittance and hue fluctuations after 500 film thickness fluctuation experiments
[0114] Typ. Min. Max. T％ 76.69 73.26 78.71 a* -4.23 -7.08 -2.04 b* -4.10 -6.39 -0.82
[0115] Depend on Fig.11 The experimental results show that after 500 film thickness fluctuation experiments, the transmittance of the composite film of this embodiment is concentrated at about 76% to 78%, and the transmittance loss is small. Fig.12 The experimental results show that after 500 film thickness fluctuation experiments, the transmittance hue of the composite film of this embodiment is concentrated around the blue hue (-4, -4). However, due to the relatively concentrated distribution and small color coordinate values, it will not cause a large color deviation of the display screen.
[0116] Embodiment 3:
[0117] This embodiment provides a temperature regulating nanocomposite film and a preparation method thereof, such as Fig.13As shown, the composite film of this embodiment is a metal oxide layer and a nano metal layer stacked in sequence on the surface of a transparent glass substrate; wherein, the metal oxide layer is 2 layers, the nano metal layer is 1 layer, and the parameters of each layer are shown in Table 5 below.
[0118] Table 5 Film layer distribution and thickness of the composite film of this embodiment
[0119]
[0120] Note: The thickness of the transparent glass substrate is 0.5 mm.
[0121] The specific preparation method of the composite film in this embodiment is:
[0122] (1) forming a first metal oxide layer on the surface of a transparent glass substrate, wherein the first metal oxide layer is an ITO (indium tin oxide) layer;
[0123] The film forming method is physical vapor deposition.
[0124] (2) forming a first nano-metal layer on the surface of the first metal oxide layer, wherein the first nano-metal layer is a silver (Ag) layer;
[0125] The film forming method is physical vapor deposition.
[0126] (3) forming a second metal oxide layer on the surface of the first nano-metal layer, wherein the second metal oxide layer is an ITO layer;
[0127] The film forming method is physical vapor deposition.
[0128] Through the above film forming method, the composite film of this embodiment is finally prepared.
[0129] Example 3 Test experiment:
[0130] The composite membrane prepared in this example was tested for transmittance spectrum (the experimental results are shown in Fig.14 As shown) and transmittance spectrum test in the near-infrared mid- and short-wave range (the experimental results are shown in Fig.15 ). Fig.15 The experimental results show that the reduction in the number of film layers of the composite film of this embodiment will cause a loss in the near-infrared cutoff effect, but in the range above 900nm, the transmittance is basically below 25%.
[0131] Furthermore, the transmittance spectrum of the composite film of this embodiment was tested in the visible light range, and the experimental results are as follows: Fig.16 As shown. Fig.16 The experimental results show that due to the reduction of film layers, the composite film of this embodiment still retains a high transmittance of nearly 80% in the central band of visible light.
[0132] Furthermore, considering the influence of the coating process error, the composite film of this embodiment was subjected to 500 film thickness fluctuation experiments. The experimental results are shown in Table 6 and Fig.17 and Fig.18 shown.
[0133] Table 6 Statistics of transmittance and hue fluctuations after 500 film thickness fluctuation experiments
[0134] Typ. Min. Max. T％ 75.93 71.11 79.70 a* -5.58 -6.77 -4.24 b* 5.52 2.08 8.66
[0135] Depend on Fig.17 The experimental results show that after 500 film thickness fluctuation experiments, the transmittance of the composite film of this embodiment is concentrated at about 76%, and the transmittance loss is small. Fig.18 The experimental results show that after 500 film thickness fluctuation experiments, the transmittance hue of the composite film of this embodiment is concentrated around the yellow hue (-5,5). However, due to the relatively concentrated distribution and small color coordinate values, it will not cause a large color deviation of the display screen.
[0136] In summary, in Examples 1 to 3, the stacking of the film system structure can achieve the heat insulation effect of cutting off the near-infrared band and the high transmittance effect of the visible light band. However, in actual engineering, it is necessary to consider comprehensive factors such as process difficulty, project cost, effect modification, etc. to select the appropriate film layer structure and the number of stacking.
[0137] Embodiment 4:
[0138] This embodiment provides a temperature regulating nanocomposite film and a preparation method thereof, such as Fig.19 As shown, the composite film of this embodiment is a metal oxide layer and a nanometal layer stacked in sequence on the surface of a transparent glass substrate; then silicon compound layers are alternately stacked on the surface of the nanometal layer, wherein the metal oxide layer is 1 layer, the nanometal layer is 2 layers, and the silicon compound layer is 2 layers, and the parameters of each layer are shown in Table 7 below.
[0139] Table 7 Film layer distribution and thickness of the composite film of this embodiment
[0140]
[0141]
[0142] Note: The thickness of the transparent glass substrate is 0.5 mm.
[0143] The specific preparation method of the composite film in this embodiment is:
[0144] (1) forming a first metal oxide layer on the surface of a transparent glass substrate, wherein the first metal oxide layer is an ITO layer;
[0145] The film forming method is physical vapor deposition.
[0146] (2) forming a first nano-metal layer on the surface of the first metal oxide layer, wherein the first nano-metal layer is a silver (Ag) layer;
[0147] The film forming method is physical vapor deposition.
[0148] (3) Then, a first silicon compound layer is formed on the surface of the first nanometal layer. The first silicon compound layer is silicon oxide (SiO x )layer;
[0149] The film forming method is chemical vapor deposition.
[0150] (4) forming a second nanometal layer on the surface of the first silicon compound layer, wherein the second nanometal layer is a silver (Ag) layer;
[0151] The film forming method is physical vapor deposition.
[0152] (5) Then, a second silicon compound layer is formed on the surface of the second nanometal layer. The second silicon compound layer is silicon oxide (SiO x )layer;
[0153] The film forming method is chemical vapor deposition.
[0154] Through the above film forming method, the composite film of this embodiment is finally prepared.
[0155] Example 4 Test experiment:
[0156] The composite membrane prepared in this example was tested for transmittance spectrum (the experimental results are shown in Fig. 20 As shown) and transmittance spectrum test in the near-infrared mid- and short-wave range (the experimental results are shown in Fig.21 ). Fig.21 The experimental results show that the composite film of this embodiment has a lower transmittance in the near-infrared medium and short wave range.
[0157] Furthermore, the transmittance spectrum of the composite film of this embodiment was tested in the visible light range, and the experimental results are as follows: Fig. 22 As shown. Fig. 22 The experimental results show that the composite film of this embodiment maintains a relatively high transmittance in the visible light band, so it can achieve heat insulation while also maintaining a good transmittance effect.
[0158] Furthermore, considering the influence of the coating process error, the composite film of this embodiment was subjected to 500 film thickness fluctuation experiments. The experimental results are shown in Table 8 and Fig.23 and Fig.24 shown.
[0159] Table 8 Statistics of transmittance and hue fluctuations after 500 film thickness fluctuation experiments
[0160] Typ. Min. Max. T％ 82.93 78.93 83.81 a* -4.42 -6.57 -1.93 b* 4.27 -3.70 10.11
[0161] Depend on Fig.23 The experimental results show that after 500 film thickness fluctuation experiments, the transmittance of the composite film of this embodiment is concentrated at about 82-83%, and the transmittance loss is small. Fig.24 The experimental results show that after 500 film thickness fluctuation experiments, the transmittance hue of the composite film of this embodiment is concentrated around the yellow hue (-4,4). However, due to the relatively concentrated distribution and small color coordinate values, it will not cause a large color deviation of the display screen.
[0162] Embodiment 5:
[0163] The composite film of the utility model not only includes a metal oxide layer and a nano-metal layer, but also further combines a silicon compound layer and an anti-fingerprint coating (AF thin film coating) to further play the role of heat insulation and anti-reflection. Fig.25 and 26 As shown, the metal oxide layer (metal oxide film) and the nanometal layer (metal film) are alternately arranged to form a first composite film layer; on the first composite film layer, the metal oxide layer (metal oxide film) and the silicon compound layer (for example: silicon oxide film) are alternately arranged to form a second composite film layer; on the second composite film layer, an anti-fingerprint coating (AF thin film coating) is also arranged.
[0164] This embodiment further provides a temperature regulating nanocomposite film and a method for preparing the same. Fig. 27 As shown, the composite film of this embodiment is a metal oxide layer and a nanometal layer stacked in sequence on the surface of a transparent glass substrate, alternating twice, with two metal oxide layers and two nanometal layers; then a metal oxide layer and a silicon compound layer are stacked in sequence on the surface of the nanometal layer, alternating twice, with two metal oxide layers and two silicon compound layers; finally, an anti-fingerprint coating is stacked on the surface of the silicon compound layer.
[0165] The specific preparation method of the composite film in this embodiment is:
[0166] (1) forming a first metal oxide layer on the surface of a transparent glass substrate, wherein the first metal oxide layer is a niobium pentoxide (Nb2O5) layer;
[0167] The film forming method is physical vapor deposition.
[0168] (2) forming a first nano-metal layer on the surface of the first metal oxide layer, wherein the first nano-metal layer is a silver (Ag) layer;
[0169] The film forming method is physical vapor deposition.
[0170] (3) forming a second metal oxide layer on the surface of the first nano-metal layer, wherein the second metal oxide layer is a niobium pentoxide (Nb2O5) layer;
[0171] The film forming method is physical vapor deposition.
[0172] (4) forming a second nanometal layer on the surface of the second metal oxide layer, wherein the second nanometal layer is a silver (Ag) layer;
[0173] The film forming method is physical vapor deposition.
[0174] (5) forming a third metal oxide layer on the surface of the second nano-metal layer, wherein the third metal oxide layer is a niobium pentoxide (Nb2O5) layer;
[0175] The film forming method is physical vapor deposition.
[0176] (6) Then, a first silicon compound layer is formed on the surface of the third metal oxide layer. The first silicon compound layer is silicon nitride oxide (SiO x N y )layer;
[0177] The film forming method is chemical vapor deposition.
[0178] (7) forming a fourth metal oxide layer on the surface of the first silicon compound layer, wherein the fourth metal oxide layer is a niobium pentoxide (Nb2O5) layer;
[0179] The film forming method is physical vapor deposition.
[0180] (8) Then, a second silicon compound layer is formed on the surface of the fourth metal oxide layer. The second silicon compound layer is silicon nitride oxide (SiO x N y )layer;
[0181] The film forming method is chemical vapor deposition.
[0182] (9) forming an anti-fingerprint coating on the surface of the second silicon compound layer;
[0183] The film forming method is: it can be a process such as evaporation, physical vapor deposition or spraying.
[0184] Wherein, the refractive index of the first silicon oxynitride layer is greater than or equal to the refractive index of the second silicon oxynitride layer.
[0185] Through the above film forming method, the composite film of this embodiment is finally prepared.
[0186] Application examples:
[0187] Due to the conductivity of the metal film and the metal-doped oxide film, the composite film of the utility model can also perform the function of heating by electricity, so as to improve the working ability of the display screen in a low temperature environment. Taking the most common G+G structure LCD display module as an example, the schematic diagram is shown in Fig.28 .
[0188] The switch electrode is arranged on the edge of the transparent substrate of the composite film of the utility model, and connected with the metal film layer or the metal (doped) oxide film layer of the composite film of the utility model, so that electricity can be supplied to achieve the purpose of heating.
[0189] In the presence of metal oxide layers such as ITO, FTO, ATO, it is preferred that the electrode is connected to the metal oxide layer; when the display quality is reduced due to low-temperature delay of liquid crystal, the user can energize the nanometal layer through the active manual switch module to heat the screen.
[0190] The display module equipped with the composite film of the utility model can also have a temperature measurement module and a temperature control module. When it is detected that the temperature of the display screen is lower than a threshold value (such as -10°C, which can be set manually), the temperature control module energizes the metal film layer to achieve the function of heating the screen; when the screen reaches a certain temperature (such as 20°C, which can be set manually) through heating, the temperature control module disconnects the power supply to the metal film layer and stops heating the screen.
[0191] In summary, the composite film of the utility model can not only block the external solar radiation heat in high temperature weather, but also heat the screen in low temperature environment, perform heat insulation and heating in time, and ensure that the display screen maintains efficient operation.
[0192] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of the present invention. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.
Claims
1. A temperature regulating nanocomposite membrane, characterized in that: The temperature regulating nano-composite film comprises a transparent substrate and a nano-composite film layer arranged on a surface of one side of the transparent substrate; the nano-composite film layer comprises a metal oxide layer and a nano-metal layer, and the metal oxide layer and the nano-metal layer are alternately arranged in sequence in a direction away from the transparent substrate; the metal oxide layer is arranged to have 1 to 9 layers; the nano-metal layer is arranged to have 1 to 9 layers.
2. The temperature regulating nanocomposite film according to claim 1, characterized in that: The metal oxide of the metal oxide layer is selected from one of Nb2O5, TiO2, Ta2O5, ITO, ATO and FTO.
3. The temperature regulating nanocomposite film according to claim 2, characterized in that: The metal oxide layer is provided with 2 to 5 layers.
4. The temperature regulating nanocomposite film according to claim 2, characterized in that: The thickness of a single metal oxide layer is 5 to 100 nm.
5. The temperature regulating nanocomposite film according to claim 1, characterized in that: The metal of the nano metal layer is selected from one of Au, Ag, Cu and Al.
6. The temperature regulating nanocomposite film according to claim 5, characterized in that: The nano metal layer is set to 1 to 3 layers.
7. The temperature regulating nanocomposite film according to claim 6, characterized in that: The thickness of a single nano-metal layer is 5 to 30 nm.
8. The temperature regulating nanocomposite film according to claim 1, characterized in that: The transparent substrate is selected from one of glass materials, resin materials, rigid materials or flexible materials; the thickness of the transparent substrate is 0.3-1.1 mm.
9. The temperature regulating nanocomposite membrane according to claim 1, characterized in that: The temperature-regulating nanocomposite film further includes a silicon compound layer as a partial replacement for the metal oxide layer.
10. The temperature regulating nanocomposite film according to claim 9, characterized in that: The silicon compound of the silicon compound layer is selected from silicon oxide SiO x 、Silicon Nitride SiN x or silicon oxynitride SiO x N y .
11. The temperature regulating nanocomposite film according to claim 10, characterized in that: The silicon compound layer is provided with 1 to 9 layers; and the film thickness of a single silicon compound layer is 5 to 200 nm.
12. The temperature regulating nanocomposite film according to any one of claims 9 to 11, characterized in that: The temperature regulating nano-composite film comprises a transparent substrate and a nano-composite film layer arranged on a surface of one side of the transparent substrate; the nano-composite film layer comprises a metal oxide layer, a nano-metal layer and a silicon compound layer, and in a direction away from the transparent substrate, the metal oxide layer and the nano-metal layer are alternately arranged in sequence; the alternation is 1 to 2 times; then the silicon compound layer, the nano-metal layer and the silicon compound layer are alternately arranged in sequence; the alternation is 1 to 2 times.
13. The temperature regulating nanocomposite membrane according to claim 1, characterized in that: The temperature regulating nano-composite film also includes a silicon compound layer; the metal oxide layer and the nano-metal layer are alternately arranged to form a first composite film layer; on the first composite film layer, the metal oxide layer and the silicon compound layer are alternately arranged to form a second composite film layer; on the second composite film layer, an anti-fingerprint coating is also arranged.
14. The temperature regulating nanocomposite membrane according to claim 13, characterized in that: In the first composite film layer, the metal oxide layer and the nano metal layer are alternately arranged 1 to 9 times.
15. The temperature regulating nanocomposite membrane according to claim 13, characterized in that: In the second composite film layer, the metal oxide layer and the silicon compound layer are alternately arranged 1 to 9 times; wherein, in a direction away from the transparent substrate, the refractive index of the silicon compound layer shows an equal or gradually decreasing trend.
16. The temperature regulating nanocomposite membrane according to claim 13, characterized in that: The metal oxide layers in the first composite film layer and the second composite film layer are metal oxides made of the same material.
17. The temperature regulating nanocomposite film according to any one of claims 13 to 16, characterized in that: The silicon compound of the silicon compound layer is selected from silicon oxide SiO x 、Silicon Nitride SiN x or silicon oxynitride SiO x N y ; The thickness of a single layer of the silicon compound layer is 5 to 200 nm.
18. The temperature regulating nanocomposite membrane according to claim 13, characterized in that: The film thickness of the anti-fingerprint coating is 10-30 nm.