Membrane structure of vehicle-mounted biological recognition identity verification equipment

Abstract

The utility model relates to the technical field of identity authentication equipment membranes, in particular to a vehicle-mounted biological recognition identity authentication equipment membrane structure which comprises a micro-nano layer, and the outer wall of the top of the micro-nano layer is coated with an anti-fouling coating used for preventing water drops, grease and other stains from being attached to the outer wall of the top of the micro-nano layer. A self-cleaning layer for decomposing organic matter attached to the membrane structure is arranged on the side, away from the antifouling coating, of the micro-nano layer, a protective layer is arranged on the side wall of the side, away from the micro-nano layer, of the self-cleaning layer, a fingerprint capturing optical layer is arranged on the side, away from the self-cleaning layer, of the bottom of the protective layer, and a light filtering layer is arranged at the bottom of the fingerprint capturing optical layer. Compared with the prior art, through cooperation of the self-cleaning layer, the micro-nano layer and the antifouling coating, attachment of fingerprints, water stains and oil stains can be reduced, cleaning is convenient, the cleanliness of the film is kept, the problem that normal work of a recognition system is interfered, and recognition errors or failures are caused is solved, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of identity verification equipment films, in particular to a film structure of a vehicle-mounted biometric identity verification equipment. Background Art

[0002] With the rapid development of science and technology, automobile intelligence has become an important trend in the development of the industry. Especially in the field of identity authentication, traditional authentication methods such as keys and passwords can no longer meet the needs of modern cars for safety, convenience and personalization. Therefore, in-vehicle biometric authentication devices have emerged. With its advantages of high security and convenience, it has become the mainstream method of future automobile identity authentication. Biometric technology is a method of identity recognition based on biometrics, including fingerprint recognition, iris recognition, face recognition and other methods. These technologies achieve the purpose of identity authentication by extracting the unique biometrics of an individual and performing comparison and verification. In the vehicle environment, biometric technology can effectively prevent illegal intrusion and improve the safety of the vehicle.

[0003] The Chinese patent discloses: Optical film for fingerprint identification, patent application number: 202021212438.3. The patent "The optical film for fingerprint identification may include: a base film; and a diffusion pattern layer, formed on at least one of one side of the base film and the other side of the base film. Here, the diffusion pattern layer may include a plurality of inorganic particles with a size of 15nm to 1000nm."

[0004] Although the device can achieve better fingerprint recognition and improve accuracy on the screen of small electronic devices such as smartphones through the optical film for fingerprint recognition, thereby simplifying the display structure of smartphones and improving user convenience, the surface of the film is easily attached with fingerprints, water stains, oil stains, etc. When in use, fingerprints, as one of the most obvious biological characteristics of the human body, will inevitably leave traces when touching the fingerprint film. These fingerprint traces not only affect the cleanliness of the film, but may also interfere with the normal operation of the recognition system, resulting in recognition errors or failures. In addition, pollutants such as water stains and oil stains on the user's hands are also common sources of contamination for fingerprint films. These pollutants are not only difficult to clean, but may also damage the material and structure of the fingerprint film, thereby affecting its service life. Utility Model Content

[0005] In view of this, the purpose of the utility model is to propose a membrane structure for a vehicle-mounted biometric identity verification device to solve the problem that contaminants such as water stains, oil stains and fingerprints from the user's hands adhere to the surface of the membrane, causing interference with the normal operation of the recognition system and resulting in recognition errors or failures.

[0006] Based on the above purpose, the utility model provides a membrane structure of an on-vehicle biometric identity authentication device, including a micro-nano layer, the top outer wall of the micro-nano layer is coated with an anti-fouling coating for preventing water droplets, grease and other stains from adhering to it, a self-cleaning layer for decomposing organic matter attached to the membrane structure is arranged on the side of the micro-nano layer away from the anti-fouling coating, a protective layer is arranged on the side wall of the self-cleaning layer away from the micro-nano layer, a fingerprint capturing optical layer is arranged on the bottom of the protective layer away from the self-cleaning layer, a filter layer is arranged on the bottom of the fingerprint capturing optical layer, a transparent base layer is arranged on the bottom of the filter layer, a thin film base layer is fixedly connected to the side of the transparent base layer away from the filter layer, and a fingerprint verification chip is fixedly connected to the inside of the thin film base layer.

[0007] The micro-nano layer, the self-cleaning layer, the protective layer, the fingerprint capturing optical layer, the filter layer and the transparent base layer are adhered to each other.

[0008] A fitting groove is provided on the top of the micro-nano layer, and the fitting groove is in an arc shape.

[0009] The material of the micro-nano layer is made of polyimide material.

[0010] The antifouling coating is made of fluorocarbon compounds, silicon-based compounds or nanomaterials.

[0011] The self-cleaning layer is made of titanium dioxide.

[0012] The protective layer is made of silicone material.

[0013] The beneficial effects of the utility model are as follows: when stains are attached to the antifouling coating, the material of the antifouling coating can significantly reduce the adhesion of fingerprints and various stains on the surface of the fingerprint film. Even if the stains are already attached to the film, the antifouling coating allows these stains to be easily removed, thereby keeping the film clean and transparent. Subsequently, the antifouling properties of the material of the micro-nano layer can further reduce the adhesion of stains, grease and other pollutants on the surface of the fingerprint film, maintaining the cleanliness and transparency of the film. At the same time, the micro-nano layer is subjected to friction from various external factors, such as finger touch, cleaning, etc. The micro-nano layer can effectively resist these frictions and extend the service life of the entire film. The material of the self-cleaning layer can enable it to have the ability to automatically clean. When the surface of the fingerprint film is stained with stains, dust or other pollutants, the self-cleaning layer can automatically repel these pollutants, or make it easier to be washed away by natural forces such as rain and wind, thereby maintaining the cleanliness of the film. At the same time, the self-cleaning layer also has excellent anti-fingerprint and anti-oil properties. This means that even if the fingerprint film is touched frequently, it will not easily leave obvious fingerprint marks. At the same time, it can also effectively prevent pollutants such as oil from adhering to the surface of the fingerprint film, keeping it clean and transparent. Furthermore, through the cooperation of the self-cleaning layer, micro-nano layer and anti-fouling coating, it can reduce the adhesion of fingerprints, water stains and oil stains and facilitate cleaning, thereby maintaining the cleanliness of the film, avoiding interference with the normal operation of the recognition system, causing recognition errors or failures, and facilitating use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the present invention or 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 for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the antifouling coating and the self-cleaning layer of the utility model;

[0017] Figure 3 For this utility model Figure 1 Enlarged structural diagram at A in the middle.

[0018] The markings in the figure are:

[0019] 1. Micro-nano layer; 2. Anti-fouling coating; 3. Self-cleaning layer; 4. Protective layer; 5. Fingerprint capture optical layer; 6. Filter layer; 7. Transparent base layer; 8. Film base layer; 9. Fingerprint identification and verification chip; 10. Lamination groove. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0021] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] like Figures 1 to 3 As shown, a membrane structure of an on-board biometric identity authentication device, a membrane structure of an on-board biometric identity authentication device, comprising a micro-nano layer 1, the material of the micro-nano layer 1 is made of polyimide material, the top outer wall of the micro-nano layer 1 is coated with an anti-fouling coating 2 for preventing water droplets, grease and other stains from adhering thereto, the material of the anti-fouling coating 2 is made of fluorocarbon compounds, silicon-based compounds or nanomaterials, a self-cleaning layer 3 for decomposing organic matter attached to the membrane structure is arranged on the side of the micro-nano layer 1 away from the anti-fouling coating 2, the material of the self-cleaning layer 3 is made of titanium dioxide material, and the self-cleaning layer 3 is away from the micro-nano layer 1. A protective layer 4 is provided on one side wall of the nano layer 1, and the material of the protective layer 4 is made of silicone material. A fingerprint capturing optical layer 5 is provided on the bottom of the protective layer 4 away from the self-cleaning layer 3, and a filter layer 6 is provided on the bottom of the fingerprint capturing optical layer 5. A transparent base layer 7 is provided on the bottom of the filter layer 6, and a thin film base layer 8 is fixedly connected to the side of the transparent base layer 7 away from the filter layer 6. A fingerprint verification chip 9 is fixedly connected inside the thin film base layer 8. The micro-nano layer 1, the self-cleaning layer 3, the protective layer 4, the fingerprint capturing optical layer 5, the filter layer 6, and the transparent base layer 7 are adhered to each other.

[0023] When stains are attached to the antifouling coating 2, the material of the antifouling coating 2 can significantly reduce the adhesion of fingerprints and various stains on the surface of the fingerprint film. Even if stains have already attached to the film, the antifouling coating 2 allows these stains to be easily removed, thereby keeping the film clean and transparent. Subsequently, the antifouling properties of the material of the micro-nano layer 1 can further reduce the adhesion of stains, grease and other pollutants on the surface of the fingerprint film, maintaining the cleanliness and transparency of the film. At the same time, the micro-nano layer 1 is subjected to friction from various external factors, such as finger touch, cleaning, etc. The micro-nano layer 1 can effectively resist these frictions and extend the service life of the entire film. The material of the self-cleaning layer 3 can make it have the ability to automatically clean. When the surface of the fingerprint film is stained with stains, dust or other pollutants, the self-cleaning layer 3 can automatically repel these pollutants, or make it easier to be washed away by natural forces such as rain and wind, thereby maintaining the cleanliness of the fingerprint film. At the same time, the self-cleaning layer 3 also has excellent anti-fingerprint and anti-oil properties. This means that even if the fingerprint film is touched frequently, it will not easily leave obvious fingerprint marks. At the same time, it can also effectively prevent pollutants such as oil from adhering to the surface of the fingerprint film, keeping it clean and transparent. The cooperation of the self-cleaning layer 3, the micro-nano layer 1 and the anti-fouling coating 2 can reduce the need for frequent cleaning and replacement of the fingerprint film. The protective layer 4 can provide excellent flexibility and elasticity, so that it can fit tightly on surfaces of various shapes and has a certain impact resistance, ensuring the stability and reliability of the film. The fingerprint capture optical layer 5, the filter layer 6 and the transparent base layer 7 can be protected and their optical and sensing properties can be kept stable, which helps to extend the service life of the fingerprint film. The fingerprint capture optical layer 5 can reduce reflection, increase transmission or filter specific wavelengths. Light, the fingerprint capture optical layer 5 can improve the clarity and quality of the fingerprint verification chip 9, and selectively absorb or reflect light of a specific wavelength through the filter layer 6, filter out unnecessary spectral components, and then cooperate with the fingerprint capture optical layer 5 and the micro-nano layer 1, the anti-fouling coating 2, and the self-cleaning layer 3 to improve the quality of the fingerprint image and avoid the interference of water stains and the external environment in the fingerprint image collection. The transparent base layer 7 and the thin film base layer 8 provide the basic structure and support of the film to ensure the flatness and stability of the film. At the same time, it also has excellent transparency, so that light can pass through smoothly and capture the details of the fingerprint, so that the fingerprint image can be clearly transmitted.

[0024] For further information, see Attachment Figure 2 As shown, a fitting groove 10 is provided on the top of the micro-nano layer 1. The fitting groove 10 is arc-shaped. The outer wall of the fitting groove 10 can better fit the curvature of the finger, which is convenient for collecting fingerprint images.

[0025] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0026] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A membrane structure for a vehicle-mounted biometric identity verification device, characterized in that: The invention comprises a micro-nano layer (1), wherein the top outer wall of the micro-nano layer (1) is coated with an anti-fouling coating (2) for preventing water droplets and grease stains from adhering thereto, a self-cleaning layer (3) for decomposing organic matter adhering to a membrane structure is arranged on a side of the micro-nano layer (1) away from the anti-fouling coating (2), a protective layer (4) is arranged on a side wall of the self-cleaning layer (3) away from the micro-nano layer (1), a fingerprint capturing optical layer (5) is arranged on a bottom of the protective layer (4) away from the self-cleaning layer (3), a filter layer (6) is arranged on a bottom of the fingerprint capturing optical layer (5), a transparent base layer (7) is arranged on a bottom of the filter layer (6), a thin film base layer (8) is fixedly connected to a side of the transparent base layer (7) away from the filter layer (6), and a fingerprint identification verification chip (9) is fixedly connected inside the thin film base layer (8).

2. The membrane structure of a vehicle-mounted biometric identity verification device according to claim 1, characterized in that: The micro-nano layer (1), the self-cleaning layer (3), the protective layer (4), the fingerprint capturing optical layer (5), the filter layer (6), and the transparent base layer (7) are adhered to each other.

3. The membrane structure of a vehicle-mounted biometric identity verification device according to claim 2, characterized in that: A bonding groove (10) is provided on the top of the micro-nano layer (1), and the bonding groove (10) is in an arc shape.

4. The membrane structure of a vehicle-mounted biometric identity verification device according to claim 1, characterized in that: The micro-nano layer (1) is made of polyimide material.

5. The membrane structure of a vehicle-mounted biometric identity verification device according to claim 4, characterized in that: The antifouling coating (2) is made of nanomaterials.

6. The membrane structure of a vehicle-mounted biometric identity verification device according to claim 1, characterized in that: The self-cleaning layer (3) is made of titanium dioxide.

7. The membrane structure of a vehicle-mounted biometric identity verification device according to claim 1, characterized in that: The protective layer (4) is made of silicone material.

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