High-stability spin-coated blue glass AR film and preparation method thereof

Abstract

The invention discloses a spin-coating blue glass AR film with high stability. The spin-coating blue glass AR film comprises a substrate layer, a priming layer, a spin-coating layer, a TiO2 layer and a second SiO2 layer, wherein the TiO2 layer and the second SiO2 layer are alternately arranged; wherein the base layer comprises a lanthanum titanate layer and a first SiO2 layer. The invention further discloses a preparation method of the high-stability spin-coated blue glass AR film. The lanthanum titanate layer (the refractive index is 2.04 / 550 nm) with the higher refractive index is creatively selected to replace a traditional Al2O3 layer (the refractive index is 1.7 / 550 nm) to serve as a base coat, so that the problems of demolding and poor weather resistance in the plating process of a traditional spin-coating AR film are solved, and the stability, compactness and other performance of the film layer are effectively improved; wherein the lanthanum titanate layer is used as a base layer, is mainly used for absorbing infrared light, has the advantages of high stability, low absorption and low cost, and is beneficial to improving the adhesive force between the film layer and the substrate layer.

Description

Technical Field

[0001] The present invention relates to the technical field of optical coating, and in particular to a high-stability spin-coated blue glass AR film and a preparation method thereof. Background Art

[0002] At present, the traditional spin-coated blue glass AR film is to alternately deposit low refractive index materials and high refractive index materials on the surface of the blue glass substrate to achieve the effect of light splitting and anti-reflection. Since the spin-coated layer is an organic material layer, the adhesion between it and the glass is poor and it is easy to peel off. Therefore, in order to increase the adhesion between the spin-coated layer and the glass substrate, it is necessary to plate a primer on the glass substrate before the spin-coated layer can be applied. However, the traditional Al 2 O 3 The base layer cannot meet more stringent environmental testing requirements due to its high cost and poor weather resistance, resulting in AR films having high absorption rate and unstable reflection, which has great limitations in use. Summary of the invention

[0003] In order to overcome the above technical problems, the present invention discloses a high-stability spin-coated blue glass AR film and a preparation method thereof.

[0004] The technical solution adopted by the present invention to achieve the above-mentioned purpose is:

[0005] A high-stability spin-coated blue glass AR film, the AR film comprising a base layer, a primer layer, a spin-coated layer, and TiO2 alternately coated on the base layer. 2 Layer and second SiO 2 layer;

[0006] Wherein, the bottom layer comprises a lanthanum titanate layer and a first SiO 2 layer.

[0007] The above-mentioned high-stability spin-coated blue glass AR film, wherein the spin-coated layer is composed of the following components in parts by weight: 40 to 60 parts of o-xylene, 30 to 39 parts of toluene, 0.1 to 0.8 parts of isopropanol and 0.2 to 29.9 parts of deionized water.

[0008] The above-mentioned high-stability spin-coated blue glass AR film, wherein the refractive index of the lanthanum titanate layer at a wavelength of 550nm is 2.04, the refractive index of the spin-coated layer at a wavelength of 550nm is 1.5, and the TiO 2 The single layer thickness of the layer is 2.45 at a wavelength of 550nm. 2 layer and the second SiO 2 The refractive index of the layer at a wavelength of 550 nm is 1.46.

[0009] The above-mentioned high-stability spin-coated blue glass AR film, wherein the AR film includes more than 10 layers in addition to the base layer, the TiO 2 The layer comprises at least 3 layers, the second SiO 2 The layer comprises at least 5 layers.

[0010] The above-mentioned high-stability spin-coated blue glass AR film, wherein the single layer thickness of the lanthanum titanate layer is 5nm, the first SiO 2 The single layer thickness of the layer is 20 nm, the single layer thickness of the spin-coated layer is 2000 nm, and the TiO 2 The single layer thickness of the layer is 13.57-46.44 nm, and the second SiO 2 The single layer thickness of the layer is 14.41 to 91.3 nm.

[0011] The above-mentioned high-stability spin-coated blue glass AR film, wherein the physical thickness of the lanthanum titanate layer is 5nm, the first SiO 2 The physical thickness of the layer is 20 nm, the physical thickness of the spin-coated layer is 2000 nm, and the second SiO 2 The physical thickness of layer I is 30 nm. 2 The physical thickness of layer I is 13.57 nm, and the second SiO 2 The physical thickness of layer II is 34.52 nm. 2 The physical thickness of layer II is 46.44 nm. 2 The physical thickness of layer III is 14.41 nm. 2 The physical thickness of layer III is 33.83 nm. 2 The physical thickness of layer IV is 91.3 nm.

[0012] The above-mentioned high-stability spin-coated blue glass AR film, wherein the optical thickness of the lanthanum titanate layer is 0.0742, the first SiO 2 The optical thickness of the layer is 0.2124, the optical thickness of the spin-coated layer is 32.723, and the TiO 2 The optical thickness of the layer is 0.2423-0.8294, and the second SiO 2 The optical thickness of the layer is 0.153 to 0.9694.

[0013] The above-mentioned high-stability spin-coated blue glass AR film, wherein the optical thickness of the lanthanum titanate layer is 0.0742, the first SiO 2 The optical thickness of the layer is 0.2124, the optical thickness of the spin-coated layer is 32.723, and the second SiO 2 The optical thickness of layer I is 0.3185, and the TiO2 The optical thickness of layer I is 0.2423, and the second SiO 2 The optical thickness of layer II is 0.3665, and the TiO 2 The optical thickness of layer II is 0.8294, and the second SiO 2 The optical thickness of layer III is 0.153, the TiO 2 The optical thickness of layer III is 0.6042, and the second SiO 2 The optical thickness of layer IV is 0.9694.

[0014] A method for preparing a high-stability spin-coated blue glass AR film, wherein the method is used to prepare the high-stability spin-coated blue glass AR film;

[0015] The preparation method comprises the following steps:

[0016] Step 1, pretreatment of the substrate layer;

[0017] Step 2: pre-melting lanthanum titanate and SiO 2 , cooling the coating to form the lanthanum titanate layer and the first SiO 2 layer to obtain the base layer;

[0018] Step 3, coating the surface of the primer layer with a mixture of o-xylene, toluene and isopropanol to obtain the spin coating layer;

[0019] Step 4, pre-melting TiO on the surface of the spin-coated layer 2 and SiO 2 , cooling the coating to form the TiO 2 layer and the second SiO 2 layer to obtain the spin-coated blue glass AR film.

[0020] The above-mentioned method for preparing the high-stability spin-coated blue glass AR film, wherein in steps 2 to 4, the coating conditions are:

[0021]

[0022] The beneficial effects of the present invention are as follows: the present invention innovatively selects the lanthanum titanate layer with a higher refractive index (refractive index is 2.04 / 550nm) to replace the traditional Al 2 O 3The lanthanum titanate layer (refractive index is 1.7 / 550nm) is used as a primer layer to overcome the problems of film stripping and poor weather resistance of the conventional spin-coated AR film during the plating process, and effectively improve the stability, density and other properties of the film layer; wherein the lanthanum titanate layer is used as a primer layer, which is mainly used to absorb infrared light, has the advantages of strong stability, small absorption and low cost, and is helpful to improve the adhesion between the film layer and the substrate layer, and the spin-coated layer has visible light and infrared light absorption performance, which can reduce the influence of stray light on imaging, and the second SiO 2 layer as with the TiO 2 The low refractive index materials are matched in layers, and the high and low refractive index materials are alternately used to make the equivalent refractive index of the film layer close to the refractive index of the substrate layer. The interference effect is used to reduce the reflectivity, thereby greatly optimizing the low absorption and low reflection performance of the AR film, thereby effectively reducing stray light interference and further optimizing the low reflection performance of the spin-coated blue glass AR film. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 Spectral curve reflectivity diagram of the light-absorbing low-reflection film of Example 1 and Comparative Example 1 of the present invention;

[0025] Figure 2 It is a transmittance diagram of the spectral curve of the light-absorbing and low-reflective film of Example 1 and Comparative Example 1 of the present invention. DETAILED DESCRIPTION

[0026] The present invention is further described below by means of specific embodiments to make the technical solution of the present invention easier to understand and grasp, rather than to limit the present invention.

[0027] In this embodiment, unless otherwise specified, all reagents can be purchased on the market.

[0028] In this embodiment, unless otherwise specified, the methods used are all conventional methods.

[0029] The invention provides a high-stability spin-coated blue glass AR film, wherein the AR film comprises a base layer, a primer layer, a spin-coated layer, and TiO 2 Layer and second SiO 2 layer;

[0030] Wherein, the bottom layer comprises a lanthanum titanate layer and a first SiO 2 layer;

[0031] The spin coating layer is composed of the following components in parts by weight: 40 to 60 parts of o-xylene, 30 to 39 parts of toluene, 0.1 to 0.8 parts of isopropanol and 0.2 to 29.9 parts of deionized water.

[0032] Preferably, the refractive index of the lanthanum titanate layer at a wavelength of 550 nm is 2.04, the refractive index of the spin-coated layer at a wavelength of 550 nm is 1.5, and the TiO 2 The single layer thickness of the layer is 2.45 at a wavelength of 550nm. 2 layer and the second SiO 2 The refractive index of the layer at a wavelength of 550 nm is 1.46.

[0033] Preferably, the AR film includes more than 10 layers in addition to the base layer, and the TiO 2 The layer comprises at least 3 layers, the second SiO 2 The layer comprises at least 5 layers.

[0034] Preferably, the single layer thickness of the lanthanum titanate layer is 5 nm, and the first SiO 2 The single layer thickness of the layer is 20 nm, the single layer thickness of the spin-coated layer is 2000 nm, and the TiO 2 The single layer thickness of the layer is 13.57-46.44 nm, and the second SiO 2 The single layer thickness of the layer is 14.41 to 91.3 nm.

[0035] Preferably, the optical thickness of the lanthanum titanate layer is 0.0742, and the first SiO 2 The optical thickness of the layer is 0.2124, the optical thickness of the spin-coated layer is 32.723, and the TiO 2 The optical thickness of the layer is 0.2423-0.8294, and the second SiO 2 The optical thickness of the layer is 0.153 to 0.9694.

[0036] Specifically, the AR film includes 10 layers in addition to the base layer, which are a lanthanum titanate layer, a first SiO 2 layer, spin coating, second SiO 2 Layer I, TiO 2 Layer I, second SiO 2 Layer II, TiO 2 Layer II, second SiO 2 Layer III, TiO 2 Layer III and second SiO 2 Layer IV.

[0037] Preferably, the physical thickness of the lanthanum titanate layer is 5 nm, and the first SiO 2 The physical thickness of the layer is 20 nm, the physical thickness of the spin-coated layer is 2000 nm, and the second SiO 2 The physical thickness of layer I is 30 nm.2 The physical thickness of layer I is 13.57 nm, and the second SiO 2 The physical thickness of layer II is 34.52 nm. 2 The physical thickness of layer II is 46.44 nm. 2 The physical thickness of layer III is 14.41 nm. 2 The physical thickness of layer III is 33.83 nm. 2 The physical thickness of layer IV is 91.3 nm.

[0038] Preferably, the optical thickness of the lanthanum titanate layer is 0.0742, and the first SiO 2 The optical thickness of the layer is 0.2124, the optical thickness of the spin-coated layer is 32.723, and the second SiO 2 The optical thickness of layer I is 0.3185, and the TiO 2 The optical thickness of layer I is 0.2423, and the second SiO 2 The optical thickness of layer II is 0.3665, and the TiO 2 The optical thickness of layer II is 0.8294, and the second SiO 2 The optical thickness of layer III is 0.153, the TiO 2 The optical thickness of layer III is 0.6042, and the second SiO 2 The optical thickness of layer IV is 0.9694.

[0039] The present invention also discloses a method for preparing a high-stability spin-coated blue glass AR film, and the method is used to prepare the high-stability spin-coated blue glass AR film;

[0040] The preparation method comprises the following steps:

[0041] Step 1, pretreatment of the substrate layer, including but not limited to ultrasonic cleaning, the substrate layer is preferably but not limited to a blue glass substrate;

[0042] Step 2: pre-melting lanthanum titanate and SiO 2 , cooling the coating to form the lanthanum titanate layer and the first SiO 2 layer to obtain the base layer;

[0043] Step 3, coating the surface of the primer layer with a mixture of o-xylene, toluene and isopropanol to obtain the spin coating layer;

[0044] Step 4, pre-melting TiO on the surface of the spin-coated layer 2 and SiO 2, cooling the coating to form the TiO 2 layer and the second SiO 2 layer to obtain the spin-coated blue glass AR film.

[0045] Preferably, in steps 2 to 4, the coating conditions are:

[0046]

[0047] The preparation method of the present invention is now described in detail in the following embodiments:

[0048] Embodiment 1: This embodiment provides a high-stability spin-coated blue glass AR film, which comprises a substrate layer, a lanthanum titanate layer, a first SiO 2 layer, spin coating, second SiO 2 Layer I, TiO 2 Layer I, second SiO 2 Layer II, TiO 2 Layer II, second SiO 2 Layer III, TiO 2 Layer III and second SiO 2 Layer IV.

[0049] The spin coating layer is composed of the following components in parts by weight: 45 parts of o-xylene, 35 parts of toluene, 0.5 parts of isopropanol and 19.5 parts of deionized water.

[0050] In this embodiment, the refractive index of the lanthanum titanate layer at a wavelength of 550 nm is 2.04, the refractive index of the spin-coated layer at a wavelength of 550 nm is 1.5, and the TiO 2 The single layer thickness of the layer is 2.45 at a wavelength of 550nm. 2 layer and the second SiO 2 The refractive index of the layer at a wavelength of 550 nm is 1.46.

[0051] In this embodiment, the physical thickness of the lanthanum titanate layer is 5 nm. 2 The physical thickness of the layer is 20 nm, the physical thickness of the spin-coated layer is 2000 nm, and the second SiO 2 The physical thickness of layer I is 30 nm. 2 The physical thickness of layer I is 13.57 nm, and the second SiO 2 The physical thickness of layer II is 34.52 nm. 2 The physical thickness of layer II is 46.44 nm. 2 The physical thickness of layer III is 14.41 nm. 2The physical thickness of layer III is 33.83 nm. 2 The physical thickness of layer IV is 91.3 nm;

[0052] The optical thickness of the lanthanum titanate layer is 0.0742, and the first SiO 2 The optical thickness of the layer is 0.2124, the optical thickness of the spin-coated layer is 32.723, and the second SiO 2 The optical thickness of layer I is 0.3185, and the TiO 2 The optical thickness of layer I is 0.2423, and the second SiO 2 The optical thickness of layer II is 0.3665, and the TiO 2 The optical thickness of layer II is 0.8294, and the second SiO 2 The optical thickness of layer III is 0.153, the TiO 2 The optical thickness of layer III is 0.6042, and the second SiO 2 The optical thickness of layer IV is 0.9694.

[0053] Comparative Example 1: This comparative example provides an AR film, the structure of which is the same as that of the spin-coated blue glass AR film in Example 1, except that the lanthanum titanate layer in Example 1 is replaced by Al 2 O 3 layer, wherein the Al 2 O 3 The refractive index of the layer at a wavelength of 550 nm is 1.7.

[0054] The reflectance and transmittance of the AR films of Example 1 and Comparative Example 1 were measured by spectral curves. The detailed test results are as follows: Figure 1 and Figure 2 shown.

[0055] like Figure 1 and Figure 2 As shown, the visible light reflectivity of the AR film of Example 1 in the 430-500nm band is below 0.5%, and the transmittance is maintained at about 90%. Its low absorption and low reflection performance is better than that of the AR film of Comparative Document 1.

[0056] The high-stability spin-coated blue glass AR film of the present invention has the following advantages: the present invention innovatively selects the lanthanum titanate layer with a higher refractive index (refractive index is 2.04 / 550nm) to replace the traditional Al 2 O 3The lanthanum titanate layer (refractive index is 1.7 / 550nm) is used as a primer layer to overcome the problems of film stripping and poor weather resistance of the conventional spin-coated AR film during the plating process, and effectively improve the stability, density and other properties of the film layer; wherein the lanthanum titanate layer is used as a primer layer, which is mainly used to absorb infrared light, has the advantages of strong stability, small absorption and low cost, and is helpful to improve the adhesion between the film layer and the substrate layer, and the spin-coated layer has visible light and infrared light absorption performance, which can reduce the influence of stray light on imaging, and the second SiO 2 layer as with the TiO 2 The low refractive index materials are matched in layers, and the high and low refractive index materials are alternately used to make the equivalent refractive index of the film layer close to the refractive index of the substrate layer. The interference effect is used to reduce the reflectivity, thereby greatly optimizing the low absorption and low reflection performance of the AR film, thereby effectively reducing stray light interference and further optimizing the low reflection performance of the spin-coated blue glass AR film.

[0057] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Any technician familiar with the field can make many possible changes and modifications to the technical solution of the present invention by using the technical means and technical contents disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, all equivalent changes made according to the shape, structure and principle of the present invention without departing from the content of the technical solution of the present invention should be covered by the protection scope of the present invention.

Claims

1. A high stability spin-coated blue glass AR film, characterized in that: The AR film includes a base layer, a primer layer, a spin-coated layer, and alternating TiO2 layers and second SiO2 layers; Wherein, the base layer includes a lanthanum titanate layer and a first SiO2 layer.

2. The high stability spin-coated blue glass AR film according to claim 1, characterized in that: The spin coating layer is composed of the following components in parts by weight: 40 to 60 parts of o-xylene, 30 to 39 parts of toluene, 0.1 to 0.8 parts of isopropanol and 0.2 to 29.9 parts of deionized water.

3. The high stability spin-coated blue glass AR film according to claim 2, characterized in that: The refractive index of the lanthanum titanate layer at a wavelength of 550nm is 2.04, the refractive index of the spin-coated layer at a wavelength of 550nm is 1.5, the single-layer thickness of the TiO2 layer has a refractive index of 2.45 at a wavelength of 550nm, and the refractive index of the first SiO2 layer and the second SiO2 layer at a wavelength of 550nm is 1.

46.

4. The high stability spin-coated blue glass AR film according to claim 3, characterized in that: The AR film includes more than 10 layers except the base layer, the TiO2 layer includes at least 3 layers, and the second SiO2 layer includes at least 5 layers.

5. The high stability spin-coated blue glass AR film according to claim 4, characterized in that: The single layer thickness of the lanthanum titanate layer is 5 nm, the single layer thickness of the first SiO2 layer is 20 nm, the single layer thickness of the spin-coated layer is 2000 nm, the single layer thickness of the TiO2 layer is 13.57 to 46.44 nm, and the single layer thickness of the second SiO2 layer is 14.41 to 91.3 nm.

6. The high-stability spin-coated blue glass AR film according to claim 5, characterized in that: The physical thickness of the lanthanum titanate layer is 5nm, the physical thickness of the first SiO2 layer is 20nm, the physical thickness of the spin-coated layer is 2000nm, the physical thickness of the second SiO2 layer I is 30nm, the physical thickness of the TiO2 layer I is 13.57nm, the physical thickness of the second SiO2 layer II is 34.52nm, the physical thickness of the TiO2 layer II is 46.44nm, the physical thickness of the second SiO2 layer III is 14.41nm, the physical thickness of the TiO2 layer III is 33.83nm, and the physical thickness of the second SiO2 layer IV is 91.3nm.

7. The high stability spin-coated blue glass AR film according to claim 4, characterized in that: The optical thickness of the lanthanum titanate layer is 0.0742, the optical thickness of the first SiO2 layer is 0.2124, the optical thickness of the spin-coated layer is 32.723, the optical thickness of the TiO2 layer is 0.2423-0.8294, and the optical thickness of the second SiO2 layer is 0.153-0.9694.

8. The high-stability spin-coated blue glass AR film according to claim 7, characterized in that: The optical thickness of the lanthanum titanate layer is 0.0742, the optical thickness of the first SiO2 layer is 0.2124, the optical thickness of the spin-coated layer is 32.723, the optical thickness of the second SiO2 layer I is 0.3185, the optical thickness of the TiO2 layer I is 0.2423, the optical thickness of the second SiO2 layer II is 0.3665, the optical thickness of the TiO2 layer II is 0.8294, the optical thickness of the second SiO2 layer III is 0.153, the optical thickness of the TiO2 layer III is 0.6042, and the optical thickness of the second SiO2 layer IV is 0.9694.

9. A method for preparing a high-stability spin-coated blue glass AR film, characterized in that: The preparation method is used to prepare the high-stability spin-coated blue glass AR film as described in any one of claims 2 to 8; The preparation method comprises the following steps: Step 1, pretreatment of the substrate layer; Step 2, pre-melting lanthanum titanate and SiO2 in sequence on the surface of the base layer, cooling and coating to form the lanthanum titanate layer and the first SiO2 layer, so as to obtain the base layer; Step 3, coating the surface of the primer layer with a mixture of o-xylene, toluene and isopropanol to obtain the spin coating layer; Step 4, pre-melting TiO2 and SiO2 in sequence on the surface of the spin-coated layer, cooling the coated film to form the TiO2 layer and the second SiO2 layer, so as to obtain the spin-coated blue glass AR film.

10. The method for preparing a high-stability spin-coated blue glass AR film according to claim 9, characterized in that: In steps 2 to 4, the coating conditions are:

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