Formula and preparation method of anti-blue-light and anti-impact composite adhesive layer composition for display screen

Abstract

The invention discloses a formula of an anti-blue-light and anti-impact composite adhesive layer composition for a display screen and a preparation method of the anti-blue-light and anti-impact composite adhesive layer composition, particularly relates to the technical field of display screen materials, and relates to the formula of the anti-blue-light and anti-impact composite adhesive layer composition for the display screen and the preparation method of the anti-blue-light and anti-impact composite adhesive layer composition. The anti-blue-light and impact-resistant composite adhesive layer composition for the display screen comprises an anti-blue-light and impact-resistant OCA display screen protection film, an anti-blue-light and impact-resistant AB adhesive display screen protection film and an anti-blue-light and impact-resistant display screen protection film which is directly coated on the surface of the protection film. The anti-blue-light impact-resistant OCA display screen protection film is composed of 2 parts of 50 [mu] m release film and a 25-300 [mu] m OCA glue layer. According to the anti-blue-light anti-impact adhesive tape, the anti-blue-light anti-impact adhesive coating layer is arranged, high-energy harmful blue light with the wavelength of 380-480 mm can be absorbed, and therefore the anti-blue-light effect is achieved, and the effect of protecting eyes and retina of a user is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of display screen materials, and more specifically, to a blue light-proof and impact-resistant composite adhesive layer composition formula for a display screen and a preparation method thereof. Background Art

[0002] With the popularization of electronic devices, display screens are increasingly used in people's lives. Display screens are important tools for transmitting information. In people's daily lives, televisions, educational learning machines, tablet computers, computer monitors, and mobile phone screens are indispensable, as well as large LED / OLED electronic display screens for teaching, LED lighting flat panel lamps, etc. Therefore, it is of great significance to develop a display screen protective layer that can both block blue light and have good impact resistance.

[0003] The composite adhesive layer composition in the related art includes epoxy resin, acrylate resin, filler and plasticizer; among them, epoxy resin has good adhesion, mechanical properties and chemical stability, can firmly bond different materials together, can provide basic structural support for the adhesive layer, help maintain the shape and stability of the adhesive layer, and resist the deformation of the adhesive layer by external forces; acrylate resin can ensure that the adhesive layer has high transparency, so that the light emitted by the display screen can pass through the adhesive layer as little as possible without loss, ensuring good visual effects; filler can increase the viscosity of the adhesive liquid, which helps to control the fluidity of the adhesive layer; plasticizer can effectively reduce the glass transition temperature of the adhesive layer, making the adhesive layer more flexible at room temperature.

[0004] However, there are still some shortcomings in actual use. The high-energy short-wave blue light emitted by LED and OLED electronic display screens is extremely harmful to the human eyes. When people frequently use electronic display products such as mobile phones, tablets, and learning machines, the blue light with a wavelength in the range of 415-455nm in the visible light will cause damage to the eyes, especially the 435-440nm high-energy short-wave blue light emitted by LED and OLED displays. The current anti-blue light products on the market have a single function, low efficiency in blocking blue light that is harmful to electronic display screens, and cannot meet users' needs for eye protection. Summary of the invention

[0005] In order to improve the above problems and reduce the problems that the display screen is not riot-proof, not impact-resistant, causes great harm to human eyes, and harms facial skin, the present invention specifically provides a formula of a blue light-proof and impact-resistant composite adhesive layer composition for a display screen and a preparation method thereof to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A blue light-proof and impact-resistant composite adhesive layer composition for a display screen, comprising three blue light-proof and impact-resistant composite adhesive layer compositions for a display screen: an blue light-proof and impact-resistant OCA display screen protective film, a blue light-proof and impact-resistant AB adhesive display screen protective film, and a blue light-proof and impact-resistant display screen protective film directly coated on the surface of the protective film;

[0008] The anti-blue light and impact-resistant OCA display screen protective film is composed of 2 50um release films and a 25-300um OCA glue layer;

[0009] The anti-blue light and impact-resistant AB glue display screen protective film consists of a 50um release film, a 25-125um base film, a 25-125um OCA glue layer, a 30-50um silicone glue layer and a 75um release film;

[0010] The anti-blue light and anti-impact display screen protective film directly coated on the surface of the protective film consists of a 5-200nm hardened anti-fingerprint and anti-oil coating, a 25-350um special substrate bottom layer, a 25-300um OCA glue layer and a 50um release film.

[0011] Preferably, the method for preparing the anti-blue light and impact-resistant OCA display screen protective film comprises the following steps:

[0012] A. A 25-200um surface pretreated film material is used as a substrate, and a 25-300um prepared OCA glue layer is coated on the upper surface of the substrate layer at a temperature of 30-130°C and a rotation speed of 3-8m / min, and the layer is placed in a heated, ventilated, and dust-free environment at 120-130°C for curing for 2-3min, and then a 50um release film is covered on the OCA glue layer; a blue light-proof and impact-resistant composite adhesive layer composition for a display screen is obtained, which is a blue light-proof and impact-resistant OCA display screen protective film.

[0013] Preferably, the method for preparing the anti-blue light and impact-resistant AB adhesive display screen protective film comprises the following steps:

[0014] B. Use 25-125um high-transmittance PET as a base film, and coat a 30-50um silicone glue layer on the upper surface of the base film bottom layer at a temperature of 40-130°C and a rotation speed of 3-8m / min, then place it at a temperature of 150-170°C for curing for 1-3min, and then cover it with a 75um release film; then turn it over and coat a 25-300um prepared OCA glue layer on the other side of the base film bottom layer under the same coating conditions, cure it at a temperature of 120-130°C in a dust-free environment for 2-3min, and then cover the OCA glue layer with a 50um release film to obtain a blue light-proof and impact-resistant composite adhesive layer composition for a display screen, which is an anti-blue light and impact-resistant AB adhesive display screen protective film.

[0015] Preferably, the method for preparing the blue light resistant and impact resistant display screen protective film directly coated on the surface of the protective film comprises the following steps:

[0016] C. A 25-350um special substrate is used as the bottom layer, and a 5-200nm hardened anti-fingerprint and anti-oil coating is coated on the upper surface of the bottom layer of the substrate at a temperature of 30-130°C and a rotation speed of 3-8m / min, and then placed at a temperature of 170°C for curing for 20-40min, and then covered with a 50um release film; then, the other side of the bottom layer of the substrate is turned over and a 25-300um prepared OCA glue layer is coated under the same coating conditions, and cured at a temperature of 120-130°C in a dust-free environment for 2-3min, and then a 50um release film is covered on the OCA glue layer to obtain an anti-blue light and impact-resistant composite adhesive layer composition for a display screen, which is an anti-blue light and impact-resistant display screen protective film directly coated on the surface of the protective film.

[0017] Preferably, the OCA glue layer is composed of blue light absorber J420, impact-resistant Smart material, 585 high weather-resistant pigment reagent, 711 high weather-resistant pigment reagent and OCA in a weight ratio of 100:447:3.5:1:4000.

[0018] Preferably, the direct coating method is any one or more of electroplating, roll coating, spray coating, slit coating, and gravure coating.

[0019] Preferably, the hardened anti-fingerprint and anti-oil coating is any one or more of a hardened layer with a Mohs hardness greater than level 6, an AR anti-reflection layer, an AF anti-fingerprint layer, and an antibacterial layer.

[0020] Preferably, the special substrate is any one or more of PET, PC, TPU, EPU, and glass.

[0021] Technical effects and advantages of the present invention:

[0022] 1. The present invention can absorb high-energy harmful blue light with a wavelength of 380-480mm by setting an anti-blue light and impact-resistant coating layer, thereby achieving the effect of anti-blue light and protecting the user's eyes and retina;

[0023] 2. The present invention uses impact-resistant Smart material as the impact-resistant material, which is a non-Newtonian fluid material. It is soft and elastic under normal conditions. When encountering a violent collision or impact, the molecules are quickly locked and hardened to form a protective layer to absorb external forces. After the external force disappears, the material returns to its original state, which can effectively improve the impact resistance and explosion-proof ability of the display screen or its protective film. It can improve the display screen's ability to bear external force impact, or improve the display screen protective film's ability to bear external force impact, and play a riot-proof function;

[0024] 3. The unique formula of the present invention can adjust the color temperature and restore the original display color of the electronic display screen even when part of the visible high-energy blue light is blocked, and will not affect the user experience due to the adhesion of the anti-blue light and impact-resistant OCA adhesive layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is the molecular structural formula of the blue light absorber J420 of the present invention.

[0026] Figure 2 This is the absorption curve of the blue light absorber J420 of the present invention to blue light. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the embodiments of the present invention. The raw materials used in the examples and embodiments of the present invention are all commercially available common materials unless otherwise specified below.

[0028] Preparation Example 1

[0029] A blue light-proof and impact-resistant composite adhesive layer composition for a display screen is prepared by the following preparation method:

[0030] A. Use a 75±3um surface pretreated film as a substrate, and coat a 30±5um prepared OCA glue layer on the upper surface of the substrate layer at a temperature of 30°C and a rotation speed of 6m / min, place it in a heated, ventilated, dust-free environment at 120°C for 2 minutes for curing, and then cover the OCA glue layer with a 50um release film; obtain a blue light-proof and impact-resistant composite adhesive layer composition for a display screen, which is a blue light-proof and impact-resistant OCA display screen protective film.

[0031] The OCA glue layer is composed of blue light absorber J420, impact-resistant Smart material, 585 high weather-resistant pigment reagent, 680 high weather-resistant pigment reagent and OCA in a weight ratio of 100:447:3.5:1:4000;

[0032] The film material after surface pretreatment is any one or more of high-transmittance PET, PMMA, and PC;

[0033] The blue light absorber J420 is a self-developed high-efficiency and highly weather-resistant organic compound, in which R1 / R2 / R3 / R4 are functional groups. Figure 1 is the molecular structural formula of the compound; Figure 2 This is the absorption curve of the compound to blue light. As the addition ratio of J420 increases, the absorption curve shifts toward 1, and vice versa.

[0034] Preparation Example 2

[0035] A blue light-proof and impact-resistant composite adhesive layer composition for a display screen, which is different from Preparation Example 1 in that the specific preparation steps are as follows:

[0036] A. A 50±3um surface pretreated film material is used as a substrate, and a 50±5um prepared OCA glue layer is coated on the upper surface of the substrate layer at a temperature of 30°C and a rotation speed of 5m / min, and the layer is placed in a 120°C heated, ventilated, and dust-free environment for curing for 3 minutes, and then a 50um release film is covered on the OCA glue layer; a blue light-proof and impact-resistant composite adhesive layer composition for a display screen is obtained, which is a blue light-proof and impact-resistant OCA display screen protective film.

[0037] Preparation Example 3

[0038] A blue light-proof and impact-resistant composite adhesive layer composition for a display screen, which is different from Preparation Example 1 in that the specific preparation steps are as follows:

[0039] B. Use 75±3um high-transmittance PET as the base film, and coat the upper surface of the bottom layer of the base film with a 40±10um silicone glue layer at a temperature of 40°C and a rotation speed of 8m / min, then place it at a temperature of 150°C for curing for 3min, and then cover it with a 75um release film; then turn it over and coat the other side of the bottom layer of the base film with a 35±5um prepared OCA glue layer under the same coating conditions, cure it at a temperature of 120°C in a dust-free environment for 3min, and then cover the OCA glue layer with a 50um release film to obtain a blue light-proof and impact-resistant composite AB glue layer composition for display screens, which is an anti-blue light and impact-resistant AB glue display screen protective film.

[0040] The composition of the OCA glue layer is the same as that in Preparation Example 1.

[0041] Preparation Example 4

[0042] A blue light-proof and impact-resistant composite adhesive layer composition for a display screen, which is different from Preparation Example 3 in that the preparation method is as follows:

[0043] B. Use 75±3um high-transmittance PET as the base film, and coat the upper surface of the bottom layer of the base film with a 40±10um silicone glue layer at a temperature of 40°C and a rotation speed of 8m / min, then place it at a temperature of 150°C for curing for 3min, and then cover it with a 75um release film; then turn it over and coat the other side of the bottom layer of the base film with a 45±5um prepared OCA glue layer under the same coating conditions, cure it at a temperature of 120°C in a dust-free environment for 3min, and then cover the OCA glue layer with a 50um release film to obtain an anti-blue light and impact-resistant AB glue composite adhesive layer composition for display screens, which is an anti-blue light and impact-resistant AB glue display screen protective film.

[0044] Preparation Example 5

[0045] A blue light-proof and impact-resistant composite adhesive layer composition for a display screen, which is different from Preparation Example 3 in that the preparation method is as follows:

[0046] B. Use 50±5um high-transmittance PET as the base film, and coat the upper surface of the bottom layer of the base film with a 35±5um silicone glue layer at a temperature of 40°C and a rotation speed of 8m / min, then place it at a temperature of 150°C for curing for 3min, and then cover it with a 75um release film; then turn it over and coat the other side of the bottom layer of the base film with a 35±5um prepared OCA glue layer under the same coating conditions, cure it at a temperature of 120°C in a dust-free environment for 3min, and then cover the OCA glue layer with a 50um release film to obtain a blue light-proof and impact-resistant composite adhesive layer composition for display screens, which is an anti-blue light and impact-resistant AB adhesive display screen protective film.

[0047] Preparation Example 6

[0048] A blue light-proof and impact-resistant composite adhesive layer composition for a display screen, which is different from Preparation Example 3 in that the preparation method is as follows:

[0049] B. Use 38±5um high-transmittance PET as the base film, and coat the upper surface of the bottom layer of the base film with a 35±5um silicone glue layer at a temperature of 40°C and a rotation speed of 8m / min, then place it at a temperature of 160°C for curing for 2min, and then cover it with a 75um release film; then turn it over and coat the other side of the bottom layer of the base film with a 30±5um prepared OCA glue layer under the same coating conditions, cure it at a temperature of 120°C in a dust-free environment for 3min, and then cover the OCA glue layer with a 50um release film to obtain a blue light-proof and impact-resistant composite adhesive layer composition for display screens, which is an anti-blue light and impact-resistant AB adhesive display screen protective film.

[0050] Preparation Example 7

[0051] A blue light-proof and impact-resistant composite adhesive layer composition for a display screen, which is different from Preparation Example 1 in that the preparation method is as follows:

[0052] C. A 100±5um special substrate is used as the bottom layer, and a 7.5±2.5nm hardened anti-fingerprint and anti-oil coating is applied on the upper surface of the bottom layer of the substrate at a temperature of 30°C and a rotation speed of 8m / min, and then cured at a temperature of 170°C for 20min, followed by covering with a 50um release film; then, the other side of the bottom layer of the substrate is turned over and a 35±5um prepared OCA glue layer is applied under the same coating conditions, and cured at a temperature of 120°C in a dust-free environment for 3min, and then a 50um release film is covered on the OCA glue layer to obtain an anti-blue light and impact-resistant composite adhesive layer composition for a display screen, which is an anti-blue light and impact-resistant display screen protective film directly coated on the surface of the protective film.

[0053] The direct coating method is any one or more of electroplating, roller coating, and spraying;

[0054] The hardened anti-fingerprint and anti-oil coating is any one or more of a hardened layer with a Mohs hardness greater than level 6, an AR anti-reflection layer, an AF anti-fingerprint layer, and an antibacterial layer;

[0055] The special substrate is any one or more of PET, PC, TPU, EPU and glass;

[0056] The composition of the OCA glue layer is the same as that in Preparation Example 1;

[0057] Preparation Example 8

[0058] A blue light-proof and impact-resistant composite adhesive layer composition for a display screen, which is different from Preparation Example 7 in that the specific preparation steps are as follows:

[0059] C. A 175um special substrate is used as the bottom layer, and a 7.5±2.5nm hardened anti-fingerprint and anti-oil coating is directly coated on the surface, and the coating is placed in an environment at a temperature of 170°C for thorough curing for 30 minutes; then, a 35±5um prepared OCA glue layer is coated on the other side of the bottom layer of the substrate, and the coating is cured for 3 minutes at a temperature of 120°C in a dust-free environment, and then a 50um release film is covered on the OCA glue layer to obtain a blue light-proof and impact-resistant composite adhesive layer composition for display screens, which is an anti-blue light and impact-resistant display screen protective film directly coated on the surface of the protective film.

[0060] Performance testing:

[0061] The anti-blue light and impact-resistant composite adhesive layer composition for display screens prepared in each embodiment was selected for testing, and the test objects were 160 portions of the anti-blue light and impact-resistant composite adhesive layer composition for display screens, 20 portions in each group; the light transmittance and impact breakage rate thereof were tested, and the specific testing steps were as follows:

[0062] Light transmittance:

[0063] The blue light-proof and impact-resistant composite adhesive layer composition for display screens prepared in the embodiment is first sampled, and the light transmittance of the composite adhesive layer composition is measured using a spectrometer, and the preparation effect is characterized according to the light transmittance of the blue light-proof and impact-resistant composite adhesive layer composition for display screens at a wavelength of 400 nm; the test results and evaluation criteria are as follows:

[0064] Ο: Harmful blue light transmittance value <85% (considered to have significant blue light protection effect);

[0065] X: Harmful blue light transmittance > 85% (considered as low blue light protection effect).

[0066] Impact damage rate:

[0067] The anti-blue light and impact-resistant composite adhesive layer composition for display screens prepared in the embodiment is first sampled, and the impact breakage rate of the composite adhesive layer composition is measured using a falling ball impact tester, and the preparation effect is characterized by the impact breakage rate of a steel ball with a head diameter of 25 mm at a falling height of 1.2 m on the anti-blue light and impact-resistant composite adhesive layer composition for display screens; the test results and evaluation criteria are as follows:

[0068] Ο: Impact damage rate ≤ 10% (considered to have significant impact protection effect);

[0069] X: Impact damage rate ≥ 20% (considered as low impact protection effect).

[0070] It should be specifically noted that the above-mentioned anti-blue light and impact-resistant composite adhesive layer composition for display screens is an anti-blue light and impact-resistant composite adhesive layer composition for display screens produced in a normal production method, and the data of the defective anti-blue light and impact-resistant composite adhesive layer composition for display screens produced are discarded.

[0071] Examples 1-6

[0072] A blue light-proof and impact-resistant composite adhesive layer composition for a display screen, and the corresponding relationship of the preparation methods used are shown in the following table.

[0073] Table: Comparison table of usage of blue light blocking and impact resistant composite adhesive layer compositions for display screens in Examples 1-6

[0074]

[0075]

[0076] The blue light protection and impact resistant composite adhesive layer compositions for display screens in the above-mentioned Examples 1-6 were extracted, and their light transmittance and impact breakage rate were tested according to the above-mentioned measurement steps and measurement standards. The average values ​​of the test results were recorded in the following table.

[0077] Table: Performance test results of light transmittance and impact damage rate of Examples 1-6:

[0078]

[0079] It can be seen from the above table that the preparation process of the anti-blue light and impact-resistant composite adhesive layer composition for display screens in Examples 1-6 has a good effect of improving the production effect of the anti-blue light and impact-resistant composite adhesive layer composition for display screens. By setting the anti-blue light and impact-resistant adhesive layer, harmful blue light with a wavelength of 380-480 mm can be absorbed, thereby achieving the effect of anti-blue light, protecting the user's eyes, protecting the retina, and protecting the facial skin; by using the impact-resistant Smart material as the impact-resistant material, it is soft and elastic under normal conditions. When encountering a severe collision or impact, the molecules are quickly locked and hardened to form a protective layer to absorb external force; after the external force disappears, the material returns to its original state, which can effectively improve the impact resistance and explosion-proof ability of the display screen or its protective film, thereby achieving the purpose of improving the anti-blue light and impact resistance of the composite adhesive layer composition;

[0080] Its harmful blue light transmittance is ≤85%, which is considered to have significant blue light protection effect; its impact breakage rate is ≤10%, which is considered to have significant impact protection effect.

[0081] It can be seen that when the production raw materials are constant, the production effect of the anti-blue light and impact-resistant composite adhesive layer composition for display screens can be increased by adjusting the preparation conditions. Combined with the data in the above table, it is not difficult to see that when the OCA adhesive layer is cured, the production effect is good when it is cured for 3 minutes in a heated, ventilated, dust-free environment at 120°C. When the ratio is constant, increasing the thickness of the OCA coating can improve the blue light blocking rate and impact resistance. When preparing the anti-blue light and impact-resistant OCA display screen protective film, the coating effect is best when the temperature is 30°C and the rotation speed is 5m / min. When preparing the anti-blue light and impact-resistant AB adhesive display screen protective film, the coating effect is best when the temperature is 40°C and the rotation speed is 8m / min, which is obtained from Examples 1-6.

[0082] Embodiment 7-8

[0083] A blue light-proof and impact-resistant composite adhesive layer composition for a display screen, and the corresponding relationship of the preparation methods used are shown in the following table.

[0084] Table: Comparison table of usage of blue light blocking and impact resistant composite adhesive layer composition for display screens in Examples 7-8

[0085]

[0086] The blue light protection and impact resistant composite adhesive layer compositions for display screens in the above-mentioned Examples 7-8 were taken, and their light transmittance and impact breakage rate were tested according to the above-mentioned measurement steps and measurement standards. The average values ​​of the test results were recorded in the following table.

[0087] Table: Performance test results of light transmittance and impact damage rate of Examples 7-8

[0088]

[0089] It can be seen from the above table that the preparation process of the anti-blue light and impact-resistant composite layer composition for display screens in Examples 7-8 has a good effect of improving the production effect of the anti-blue light and impact-resistant composite adhesive layer composition for display screens. By setting the anti-blue light and impact-resistant adhesive layer, visible light with a wavelength of 380-480 mm can be absorbed, thereby achieving the effect of anti-blue light, and protecting the user's eyes and retina; by using the impact-resistant Smart material as the impact-resistant material, it is soft and elastic under normal conditions. When encountering a severe collision or impact, the molecules are quickly locked and hardened to form a protective layer to absorb external force; after the external force disappears, the material returns to its original state, which can effectively improve the impact resistance and explosion-proof ability of the display screen or its protective film, thereby achieving the purpose of improving the anti-blue light and impact resistance of the composite adhesive layer composition;

[0090] Its harmful blue light transmittance is ≤85%, which is considered to have significant blue light protection effect; its impact breakage rate is ≤10%, which is considered to have significant impact protection effect.

[0091] It can be seen that when the production raw materials are certain, the production effect of the anti-blue light and impact-resistant composite adhesive layer composition for display screens can be increased by adjusting the preparation conditions. Combined with the data in the above table, it is not difficult to see that when the AR / antibacterial / AF surface is cured at a temperature of 170°C for 30 minutes, the production effect is good. Increasing the thickness of the substrate can improve the impact resistance, which is obtained from Examples 7-8.

[0092] This specific embodiment is only an explanation of the present invention, not a limitation of the present invention. After reading this specification, those skilled in the art can make non-creative modifications to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A blue light-proof and impact-resistant composite adhesive layer composition for a display screen, characterized in that: It includes three blue light-proof and impact-resistant composite adhesive layer compositions for display screens, namely, blue light-proof and impact-resistant OCA display screen protective film, blue light-proof and impact-resistant AB adhesive display screen protective film, and blue light-proof and impact-resistant display screen protective film directly coated on the surface of the protective film; The anti-blue light and impact-resistant OCA display screen protective film is composed of 2 50um release films and a 25-300um OCA glue layer; The anti-blue light and impact-resistant AB glue display screen protective film consists of a 50um release film, a 25-125um base film, a 25-125um OCA glue layer, a 30-50um silicone glue layer and a 75um release film; The anti-blue light and anti-impact display screen protective film directly coated on the surface of the protective film consists of a 5-200nm hardened anti-fingerprint and anti-oil coating, a 25-350um special substrate bottom layer, a 25-300um OCA glue layer and a 50um release film.

2. The blue light-proof and impact-resistant composite adhesive layer composition for display screens according to claim 1, characterized in that: The method for preparing the anti-blue light and impact-resistant OCA display screen protective film comprises the following steps: A. A 25-200um surface pretreated film material is used as a substrate, and a 25-300um prepared OCA glue layer is coated on the upper surface of the substrate layer at a temperature of 30-130°C and a rotation speed of 3-8m / min, and the layer is placed in a heated, ventilated, and dust-free environment at 120-130°C for curing for 2-3min, and then a 50um release film is covered on the OCA glue layer; a blue light-proof and impact-resistant composite adhesive layer composition for a display screen is obtained, which is a blue light-proof and impact-resistant OCA display screen protective film.

3. The blue light-proof and impact-resistant composite adhesive layer composition for display screens according to claim 1, characterized in that: The method for preparing the anti-blue light and impact-resistant AB adhesive display screen protective film comprises the following steps: B. Use 25-125um high-transmittance PET as a base film, and coat a 30-50um silicone glue layer on the upper surface of the base film bottom layer at a temperature of 40-130°C and a rotation speed of 3-8m / min, then place it at a temperature of 150-170°C for curing for 1-3min, and then cover it with a 75um release film; then turn it over and coat a 25-300um prepared OCA glue layer on the other side of the base film bottom layer under the same coating conditions, cure it at a temperature of 120-130°C in a dust-free environment for 2-3min, and then cover the OCA glue layer with a 50um release film to obtain a blue light-proof and impact-resistant composite adhesive layer composition for a display screen, which is an anti-blue light and impact-resistant AB adhesive display screen protective film.

4. The blue light blocking and impact resistant composite adhesive layer composition for display screens according to claim 1, characterized in that: The method for preparing a blue light-proof and impact-resistant display screen protective film directly coated on the surface of the protective film comprises the following steps: C. A 25-350um special substrate is used as the bottom layer, and a 5-200nm hardened anti-fingerprint and anti-oil coating is coated on the upper surface of the bottom layer of the substrate at a temperature of 30-130°C and a rotation speed of 3-8m / min, and then placed at a temperature of 170°C for curing for 20-40min, and then covered with a 50um release film; then, the other side of the bottom layer of the substrate is turned over and a 25-300um prepared OCA glue layer is coated under the same coating conditions, and cured at a temperature of 120-130°C in a dust-free environment for 2-3min, and then a 50um release film is covered on the OCA glue layer to obtain an anti-blue light and impact-resistant composite adhesive layer composition for a display screen, which is an anti-blue light and impact-resistant display screen protective film directly coated on the surface of the protective film.

5. The blue light blocking and impact resistant composite adhesive layer composition for display screens according to claim 1, characterized in that: The OCA glue layer is composed of blue light absorber J420, impact-resistant Smart material, 585 high weather-resistant pigment reagent, 711 high weather-resistant pigment reagent and OCA in a weight ratio of 100:447:3.5:1:4000.

6. The blue light blocking and impact resistant composite adhesive layer composition for display screens according to claim 2, characterized in that: The film material after surface pretreatment is any one or more of high-transmittance PET, PMMA, and PC.

7. The blue light blocking and impact resistant composite adhesive layer composition for display screens according to claim 4, characterized in that: The direct coating method is any one or more of electroplating, roll coating, spray coating, slit coating, and gravure coating.

8. The blue light blocking and impact resistant composite adhesive layer composition for display screens according to claim 4, characterized in that: The hardened anti-fingerprint and anti-oil coating is any one or more of a hardened layer with a Mohs hardness greater than level 6, an AR anti-reflection layer, an AF anti-fingerprint layer, and an antibacterial layer.

9. The blue light blocking and impact resistant composite adhesive layer composition for display screens according to claim 4, characterized in that: The special substrate is any one or more of PET, PC, TPU, EPU and glass.

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