A heating and defrosting material film layer for automobile laser radar cover and its manufacturing method

Abstract

The present invention belongs to the technical field of laser radar covers and provides a heated defrosting material film layer for an automotive laser radar cover and a method for making the same. The film layer comprises a material layer, an optical adhesive layer, a conductive silver paste layer, a diaphragm layer, and an optical film anti-reflection layer. The optical adhesive layer is located on the back of the material layer, the conductive silver paste layer is located between the optical adhesive layer and the diaphragm layer, the optical film anti-reflection layer is located on the back of the diaphragm layer, and the conductive silver paste layer has an end lead-out area, to which a terminal is connected. The advantage of the present invention is that the end lead-out area of ​​the conductive silver paste layer is insulated from the diaphragm layer by using an insulating ink layer. In this way, the conductive silver paste layer heats two vertical edges, making the diaphragm layer heat more evenly after power is applied. By combining the conductive silver paste with the heating diaphragm and making the heating diaphragm adhere to the laser radar cover, the problem of heating and defrosting is solved. No ITO is required, and the problem of heating function failure at high temperatures is avoided. The pass rate is high and the cost is low.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser radar covers and relates to a heatable defrosting material film layer of an automobile laser radar cover and a manufacturing method thereof. Background Art

[0002] With the rise of intelligent vehicles, LiDAR is being used more and more in cars. To ensure the normal use of LiDAR in rainy and snowy weather, LiDAR covers with heating and defrosting functions have become a product trend. For existing LiDAR covers, heating and defrosting effects are generally achieved through ITO plating. This solution requires spraying a layer of hardened coating before plating ITO. In addition, ITO is prone to cracking at high temperatures, causing the heating function to fail. The overall product qualification rate is low and the cost is high. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a heated defrosting material film layer for an automobile laser radar cover and a method for making the same, in response to the current status of the existing technology, so as to solve the problem of heating and defrosting, avoid the problem of failure of the heating function at high temperatures without the need for ITO, and have a high pass rate and low cost.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a car laser radar cover can be heated and defrosted material film layer, characterized in that it includes a material layer, an optical adhesive layer, a conductive silver paste layer, a diaphragm layer and an optical film anti-reflection layer. The optical adhesive layer is located on the back of the material layer and is used to connect the diaphragm layer and the material layer. The conductive silver paste layer is located between the optical adhesive layer and the diaphragm layer and is used to form a heating conductive circuit for the diaphragm layer. The optical film anti-reflection layer is located on the back of the diaphragm layer. The conductive silver paste layer has an end lead-out area, and the end lead-out area is connected to a wiring terminal.

[0005] In the above-mentioned automotive laser radar cover heatable defrost material film layer, the conductive silver paste layer is arranged on the peripheral edge of the membrane layer, and the end lead-out area of ​​the conductive silver paste layer is provided with anisotropic conductive glue, and the wiring terminal is connected to the end lead-out area of ​​the conductive silver paste layer through the anisotropic conductive glue.

[0006] In the above-mentioned automotive laser radar cover heatable defrost material film layer, an insulating ink layer is provided between the end lead-out area of ​​the conductive silver paste layer and the diaphragm layer. The insulating ink layer covers the end lead-out area of ​​the conductive silver paste layer and insulates the end lead-out area from the diaphragm layer.

[0007] In the above-mentioned automotive laser radar cover heatable defrost material film layer, the front side of the material layer has a protective layer, which is a transparent coating or a coating that transmits a specified wavelength band, and the thickness of the protective layer is 5μm-30μm.

[0008] In the above-mentioned automotive laser radar cover heatable defrost material film layer, the printing thickness of the conductive silver paste layer is 2μm-15μm, the conductive silver paste layer is screen-printed between the optical adhesive layer and the membrane layer, and the printing screen mesh number is 150-420 mesh.

[0009] In the above-mentioned automotive laser radar cover heatable defrost material film layer, the printing thickness of the insulating ink layer is 2μm-15μm, and the insulating ink layer is screen-printed between the end lead-out area and the diaphragm layer, and the printing screen mesh number is 150-420 mesh.

[0010] In the above-mentioned automotive laser radar cover heatable defrosting material film layer, the transmittance of the film layer at a 0° angle in the infrared band of 850nm-1550nm is greater than 80%, and the sheet resistance of the film layer is 20Ω-300Ω.

[0011] A method for manufacturing a film layer of a heatable defrosting material for an automotive laser radar cover, characterized by comprising the following steps:

[0012] Step 1: Material layer production: Select PC or PMMA materials and use injection molding or extrusion to form the material layer;

[0013] Step 2: Making the protective layer: The protective layer is made on the front of the material layer by spraying and heat curing;

[0014] Step 3: Making a membrane layer: forming the membrane layer by coating or printing one or more of silver nanowire ink, carbon nanotube ink, and transparent conductive resin ink;

[0015] Step 4: Preparation of insulating ink layer: The insulating ink layer is made of insulating ink and is screen-printed on the membrane layer;

[0016] Step 5: Fabrication of a conductive silver paste layer: The conductive silver paste layer is screen-printed on the diaphragm layer, and the insulating ink layer covers the end lead-out region of the conductive silver paste layer and insulates the end lead-out region from the diaphragm layer;

[0017] Step 6: Make connections between anisotropic conductive adhesive and terminal blocks: The anisotropic conductive adhesive is attached to the conductive silver paste layer, and the terminal blocks are connected to the end lead-out area of ​​the conductive silver paste layer through the anisotropic conductive adhesive;

[0018] Step 7: Vacuum bonding of optical adhesive layer: The film layer completed in step 6 is bonded to the back of the material layer using the optical adhesive layer through vacuum bonding;

[0019] Step 8: Fabrication of an optical film anti-reflection layer: Fabricate an optical film anti-reflection layer on the back of the product completed in step 7 by evaporation, electron beam, or sputtering.

[0020] In the above-mentioned method for making a heated defrost material film layer of an automotive laser radar cover, in step seven, the optical adhesive layer is first bonded to the material layer, the bonding temperature is 20℃-55℃, the vacuum time is 3s-20s, and the holding time is 5s-35s. Then, high-temperature debubbling is performed, the debubbling temperature is 40℃-80℃, the debubbling pressure is 3kgf / cm2-8kgf / cm2, and the debubbling time is 10min-60min. Then, the material layer is bonded to the membrane layer through the optical adhesive layer, the bonding temperature is 20℃-55℃, the vacuum time is 3s-20s, and the holding time is 5s-35s. Finally, high-temperature debubbling is performed, the debubbling temperature is 40℃-80℃, the debubbling pressure is 3kgf / cm2-8kgf / cm2, and the debubbling time is 10min-60min.

[0021] In the above-mentioned method for manufacturing a heated defrosting material film layer of an automotive laser radar cover, the material layer is an infrared-transmitting material or a transparent material in the 850nm-1550nm band, and the transmittance at a 0° angle in the infrared band of 850nm-1550nm is greater than 80%.

[0022] Compared with the existing technology, the advantage of the present invention is that the end lead-out area of ​​the conductive silver paste layer is insulated from the diaphragm layer by using an insulating ink layer. In this way, the two vertical edges of the conductive silver paste layer are heated, with the largest range, so that the diaphragm layer is heated more evenly after power is turned on. By combining the conductive silver paste with the heating diaphragm and making the heating diaphragm adhere to the laser radar cover, the problem of heating and defrosting is solved. No ITO is required, and the problem of failure of the heating function at high temperature is avoided. The qualified rate is high and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the film layer of the heating and defrosting material of the automotive laser radar cover. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0026] In the figure, there are a material layer 100, an optical adhesive layer 200, a conductive silver paste layer 300, an end lead region 301, a diaphragm layer 400, an optical film anti-reflection layer 500, anisotropic conductive adhesive 600, an insulating ink layer 700, a protective layer 800, and a connection terminal 900.

[0027] like Figure 1As shown, the automotive laser radar cover can heat and defrost the material film layer, including the material layer 100, the optical adhesive layer 200, the conductive silver paste layer 300, the membrane layer 400 and the optical film anti-reflection layer 500. The optical adhesive layer 200 is located on the back of the material layer 100 and is used to connect the membrane layer 400 and the material layer 100. In this way, the optical adhesive layer 200 can be used to connect the membrane layer 400 and the material layer 100 into a whole. The conductive silver paste layer 300 is located between the optical adhesive layer 200 and the membrane layer 400 and is used to form a heating conductive circuit on the membrane layer 400. The optical film anti-reflection layer 500 is located on the back of the membrane layer 400. The conductive silver paste layer 300 has an end lead-out area 301, and a terminal 900 is connected to the end lead-out area 301. The terminal 900 can be connected to an external electronic control component to perform a heating operation. The conductive silver paste layer 300 is arranged on the peripheral edge of the membrane layer 400. The end lead-out area 301 of the conductive silver paste layer 300 has an anisotropic conductive adhesive 600. The terminal 900 is connected to the end lead-out area 301 of the conductive silver paste layer through the anisotropic conductive adhesive 600. 01, here is the anisotropic conductive adhesive 600, which can achieve conductivity in the direction perpendicular to the product after connection, and non-conductivity in the direction parallel to the product. There is an insulating ink layer 700 between the end lead-out area 301 of the conductive silver paste layer 300 and the diaphragm layer 400. The insulating ink layer 700 covers the end lead-out area 301 of the conductive silver paste layer 300 and insulates the end lead-out area 301 from the diaphragm layer 400. Here, the insulating ink layer 700 can make the conductive silver paste layer 300 directly contact with some areas of the diaphragm layer 400, and some areas not directly contact, so that The conductive silver paste layer 300 is conductive along the two vertical edges, so that the membrane layer 400 is heated more evenly after power is applied. In order to protect the front of the material layer 100, the front of the material layer 100 has a protective layer 800. The protective layer 800 is a transparent coating or a coating that transmits a specified wavelength. The thickness of the protective layer 800 is 5μm-30μm. The protective coating can be retained or cancelled according to the material of the material layer 100 and customer requirements. For example, when the material layer 100 is PC, the protective layer 800 is retained. When the material layer 100 is PMMA, the protective layer 800 is cancelled.

[0028] The conductive silver paste layer 300 is a conductive circuit printed according to the actual size, shape and requirements of the product. Its function is to enable the diaphragm layer 400 to better form a conductive circuit and to heat more evenly after electricity is passed through. The printing thickness of the conductive silver paste layer 300 is 2μm-15μm. The conductive silver paste layer 300 is screen-printed between the optical adhesive layer 200 and the diaphragm layer 400, and the printing screen mesh number is 150 mesh-420 mesh. The insulating ink layer 700 functions to insulate the end lead-out area 301 (as shown in Figure 2) of the conductive silver paste layer 300 from the diaphragm layer 400. The conductive silver paste layer 300 is in direct contact with some areas of the diaphragm layer 400, and some areas are not in direct contact. The printing thickness of the insulating ink layer 700 is 2μm-15μm. The insulating ink layer 700 is screen-printed between the end lead-out area 301 and the diaphragm layer 400, and the printing screen mesh number is 150 mesh-420 mesh.

[0029] The membrane layer 400 is a transparent heating film or a conductive film that is transparent in the infrared band. The transmittance of the membrane layer 400 at a 0° angle in the infrared band of 850nm-1550nm is greater than 80%, and the square resistance of the membrane layer 400 is 20Ω-300Ω. The membrane layer 400 is made by coating or printing one or more of nano silver wire ink, carbon nanotube ink, and transparent conductive resin ink on a membrane such as PET, PC or PMMA, and adding or not adding a layer of protective resin with a thickness of no more than 2μm according to actual needs. For example, the membrane layer 400 can be a PET membrane + nano silver wire ink layer + PMMA resin protective layer.

[0030] The manufacturing method of the heating and defrosting material film layer of the automotive laser radar cover mainly includes the following steps: Step 1, manufacturing the material layer 100: selecting PC or PMMA materials and using injection molding or extrusion to mold the material layer 100; Step 2, manufacturing the protective layer 800: the protective layer 800 is manufactured on the front of the material layer 100 by spraying and heat curing; Step 3, manufacturing the diaphragm layer 400: forming it by coating or printing one or more of nano silver wire ink, carbon nanotube ink, and transparent conductive resin ink; Step 4, manufacturing the insulating ink layer 700: the insulating ink layer 700 is screen-printed on the diaphragm layer 400; Step 5, manufacturing the conductive silver paste layer 300: the conductive silver paste layer 300 is screen-printed on the diaphragm layer 400 , and make the insulating ink layer 700 cover the end lead-out area 301 of the conductive silver paste layer 300 and make the end lead-out area 301 insulated from the membrane layer 400; Step 6, making and connecting the anisotropic conductive adhesive 600 and the terminal 900: the anisotropic conductive adhesive 600 is attached to the conductive silver paste layer 300, and the terminal 900 is connected to the end lead-out area 301 of the conductive silver paste layer through the anisotropic conductive adhesive 600; Step 7, vacuum bonding of the optical adhesive layer 200: the membrane layer 400 completed in step 6 is bonded to the back of the material layer 100 by the optical adhesive layer 200 through vacuum bonding; Step 8, making the optical film anti-reflection layer 500: the optical film anti-reflection layer 500 is made on the back of the product completed in step 7 by evaporation, electron beam, and sputtering.

[0031] The specific process involved in each step is as follows:

[0032] The protective layer 800 is a transparent coating or a coating that transmits a specified wavelength band. The protective layer 800 is applied by spraying or other methods. The thickness of the protective layer 800 is between 5 μm and 30 μm. The curing method is UV curing or thermal curing. For example, the transparent coating of UV curing type UVHC-5000 has a film thickness of 8 μm to 16 μm, an IR baking temperature of 65°C to 95°C, an IR baking time of 1.5 min to 6 min, and a curing energy of 3-12 J / cm2 UV-A. The transparent coating of thermal curing type PHC587C2 has a film thickness of 6 μm to 12 μm, a surface drying temperature of 10 min to 20 min at room temperature, and a subsequent curing temperature of 130°C, with a curing time of ≥30 min.

[0033] The material layer 100 is a material that transmits infrared light in the 850nm-1550nm range or is transparent, with a transmittance of >80% at a 0° angle within the infrared band of 850nm-1550nm. The material layer 100 can be made of materials such as PC and PMMA according to customer requirements. For example, the material layer 100 can be Covestro infrared-transparent PC AX-2675-ST. Depending on the product structure, the material layer 100 can be produced using processes such as injection molding and extrusion.

[0034] The optical adhesive layer 200 is connected to the material layer 100 and the membrane layer 400 through a vacuum bonding process. Here, the anisotropic conductive adhesive 600, the terminal 900, the conductive silver paste layer 300 and the insulating ink layer 700 are between the optical adhesive layer 200 and the membrane layer 400. The bonding process is as follows: first, the optical adhesive layer 200 is bonded to the material layer 100 at a bonding temperature of 20°C-55°C, a vacuum time of 3s-20s, and a pressure holding time of 5s-35s. Then, high-temperature degassing is performed at a degassing temperature of 40°C- 80℃, debubble pressure 3kgf / cm2-8kgf / cm2, debubble time 10min-60min; then the material layer 100+optical adhesive layer 200 and the film layer 400 are bonded, the bonding temperature is 20℃-55℃, the vacuum time is 3s-20s, the pressure holding time is 5s-35s, and finally high-temperature debubble is performed, the debubble temperature is 40℃-80℃, the debubble pressure is 3kgf / cm2-8kgf / cm2, and the debubble time is 10min-60min.

[0035] The terminal 900 is connected to the end lead-out area 301 of the conductive silver paste layer 300 through the anisotropic conductive adhesive 600. The connection process is as follows: the anisotropic conductive adhesive 600 is first attached to the conductive silver paste layer 300 at a temperature of 80°C-140°C and a time of 1s-15s; then (the anisotropic conductive adhesive 600 + the conductive silver paste layer 300) is connected to the terminal 900 at a temperature of 120°C-210°C, a pressure of 10kgf / cm2-30kgf / cm2, and a time of 3s-20s.

[0036] After connection, the anisotropic conductive adhesive 600 can achieve conductivity in the direction perpendicular to the product, but not in the direction parallel to the product. The anisotropic conductive adhesive 600 connects the terminal 900 and the conductive silver paste layer 300, achieving conduction from the conductive silver paste layer 300 to the terminal 900. The anisotropic conductive adhesive 600 is a low-temperature anisotropic conductive adhesive that can be connected at temperatures of 120°C-150°C.

[0037] The conductive silver paste layer 300 is a conductive circuit printed according to the actual size, shape and requirements of the product. Its function is to enable the diaphragm layer 400 to form a better conductive circuit and to heat more evenly after electricity is passed through. The conductive silver paste layer 300 is realized by screen printing, with a printing screen mesh count between 150 mesh and 420 mesh and a printing thickness between 2μm and 15μm.

[0038] The function of the insulating ink layer 700 is to insulate the end lead-out area 301 of the conductive silver paste layer 300 from the diaphragm layer 400. The conductive silver paste layer 300 is in direct contact with some areas of the diaphragm layer 400, and some areas are not in direct contact, so that the diaphragm layer 400 is heated more evenly after power is turned on. The insulating ink layer 700 is realized by screen printing, with the printing screen mesh number between 150 mesh and 420 mesh, and the printing thickness between 2μm and 15μm.

[0039] The membrane layer 400 is a transparent heating film or a conductive film that is transparent in the infrared band. The transmittance of the membrane layer 400 at a 0° angle in the infrared band of 850nm-1550nm is greater than 80%, and the square resistance of the membrane layer 400 is 20Ω-300Ω. The membrane layer 400 is made by coating or printing one or more of nano silver wire ink, carbon nanotube ink, and transparent conductive resin ink on a membrane such as PET, PC or PMMA, and adding or not adding a layer of protective resin with a thickness of no more than 2μm according to actual needs. For example, the membrane layer 400 can be a PET membrane + nano silver wire ink layer + PMMA resin protective layer.

[0040] The optical film anti-reflection layer 500 is formed by PVD coating using evaporation, electron beam, sputtering, etc. The thickness of the optical film anti-reflection layer 500 does not exceed 1 μm.

[0041] It should be noted that, in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly defined. The terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0042] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0043] The specific embodiments described herein are merely examples of the spirit of the present invention, and those skilled in the art may make various modifications or additions to the described specific embodiments or replace them with similar methods.

Claims

1. A film layer of a heating and defrosting material for a car laser radar cover, characterized in that: The optical film comprises a material layer, an optical adhesive layer, a conductive silver paste layer, a diaphragm layer and an optical film anti-reflection layer. The optical adhesive layer is located on the back of the material layer and is used to connect the diaphragm layer and the material layer. The conductive silver paste layer is located between the optical adhesive layer and the diaphragm layer and is used to form a heating conductive circuit in the diaphragm layer. The optical film anti-reflection layer is located on the back of the diaphragm layer. The conductive silver paste layer has an end lead-out area, and the end lead-out area is connected to a wiring terminal. An insulating ink layer is provided between the end lead-out area of ​​the conductive silver paste layer and the diaphragm layer. The insulating ink layer covers the end lead-out area of ​​the conductive silver paste layer and enables The end lead-out area is insulated from the diaphragm layer; the printing thickness of the conductive silver paste layer is 2μm-15μm, the conductive silver paste layer is screen-printed between the optical adhesive layer and the diaphragm layer, and the printing screen mesh number is 150 mesh-420 mesh; the printing thickness of the insulating ink layer is 2μm-15μm, the insulating ink layer is screen-printed between the end lead-out area and the diaphragm layer, and the printing screen mesh number is 150 mesh-420 mesh; a protective layer is provided on the front of the material layer, the protective layer is a transparent coating or a coating that transmits a specified wavelength band, and the thickness of the protective layer is 5μm-30μm.

2. The automotive laser radar cover heatable defrosting material film layer according to claim 1, characterized in that: The conductive silver paste layer is arranged on the peripheral edge of the diaphragm layer, and anisotropic conductive glue is provided on the end lead-out area of ​​the conductive silver paste layer. The connection terminal is connected to the end lead-out area of ​​the conductive silver paste layer through the anisotropic conductive glue.

3. The automotive laser radar cover heatable defrosting material film layer according to claim 1, characterized in that: The transmittance of the diaphragm layer at an angle of 0° in the infrared band of 850nm-1550nm is greater than 80%, and the sheet resistance of the diaphragm layer is 20Ω-300Ω.

4. A method for manufacturing a heatable defrosting material film layer for an automotive laser radar cover according to any one of claims 1 to 3, characterized in that: The following steps are involved: Step 1: Material layer production: Select PC or PMMA materials and use injection molding or extrusion to form the material layer; Step 2: Making the protective layer: The protective layer is made on the front of the material layer by spraying and heat curing; Step 3: Making a membrane layer: forming the membrane layer by coating or printing one or more of silver nanowire ink, carbon nanotube ink, and transparent conductive resin ink; Step 4: Preparation of insulating ink layer: The insulating ink layer is made of insulating ink and is screen-printed on the membrane layer; Step 5: Fabrication of a conductive silver paste layer: The conductive silver paste layer is screen-printed on the diaphragm layer, and the insulating ink layer covers the end lead-out region of the conductive silver paste layer and insulates the end lead-out region from the diaphragm layer; Step 6: Make connections between anisotropic conductive adhesive and terminal blocks: The anisotropic conductive adhesive is attached to the conductive silver paste layer, and the terminal blocks are connected to the end lead-out area of ​​the conductive silver paste layer through the anisotropic conductive adhesive; Step 7: Vacuum bonding of optical adhesive layer: The film layer completed in step 6 is bonded to the back of the material layer using the optical adhesive layer through vacuum bonding; Step 8: Fabrication of an optical film anti-reflection layer: Fabricate an optical film anti-reflection layer on the back of the product completed in step 7 by evaporation, electron beam, or sputtering.

5. The method for manufacturing a heatable defrosting material film layer for an automotive laser radar cover according to claim 4, characterized in that: In step seven, the optical adhesive layer is first bonded to the material layer at a bonding temperature of 20°C-55°C, a vacuum time of 3s-20s, and a holding time of 5s-35s. Then, high-temperature debubbling is performed at a debubbling temperature of 40°C-80°C, a debubbling pressure of 3kgf / cm2-8kgf / cm2, and a debubbling time of 10min-60min. Then, the material layer is bonded to the film layer through the optical adhesive layer at a bonding temperature of 20°C-55°C, a vacuum time of 3s-20s, and a holding time of 5s-35s. Finally, high-temperature debubbling is performed at a debubbling temperature of 40°C-80°C, a debubbling pressure of 3kgf / cm2-8kgf / cm2, and a debubbling time of 10min-60min.

6. The method for manufacturing a heatable defrosting material film layer for an automotive laser radar cover according to claim 5, characterized in that: The material layer is a material that transmits infrared light in the range of 850nm to 1550nm or a transparent material, and has a transmittance greater than 80% at an angle of 0° in the infrared range of 850nm to 1550nm.

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