Intelligent light-transmitting skin structure capable of being operated in touch mode and preparation method of intelligent light-transmitting skin structure

Abstract

The invention relates to the technical field of automotive trim structures, in particular to an intelligent light-transmitting skin structure capable of being operated in a touch mode and a preparation method of the intelligent light-transmitting skin structure. According to the intelligent light-transmitting skin structure disclosed by the invention, polyurethane (PU) and ethylene-vinyl acetate copolymer (EVA) are combined in material selection, so that the whole structure has excellent wear resistance, tear resistance and high temperature resistance; a plurality of functional layers (such as the light-emitting layer, the sensing layer and the supporting layer) are combined together, the technological process is optimized, more concise structural design is achieved, the touch control layer is connected with the bottom interface layer, and centralized control over multiple functions such as lamplight, an air conditioner and a seat in a vehicle can be achieved; according to the integrated design, the operation process of a user is simplified, the environment in the automobile can be adjusted more conveniently, the intelligent level of the automobile is improved, and the expectation of modern consumers for the multifunctionality of the automobile interior is met.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile interior structure, and in particular to a touch-operable intelligent light-transmitting surface structure and a preparation method thereof. Background Art

[0002] With the rapid development of smart cars, the intelligence level of the in-car environment is increasing day by day, and users have higher requirements for the comfort, functionality and aesthetics of car interiors. At present, most of the car interior materials commonly used in the market are traditional plastics, leather and fabrics, etc. Although these materials have certain aesthetics and durability, they have limitations in functionality.

[0003] Traditional interior materials lack interactivity, cannot achieve real-time control of the in-car environment, and are difficult to customize in terms of visual effects. In addition, many existing touch screens are fragile in automotive applications and are easily affected by the external environment, especially under high temperature and humidity conditions, which may cause screen failure or reduced touch sensitivity.

[0004] In recent years, some companies have tried to combine touch technology with interior materials, but existing products often face the following problems: first, improper selection and processing of light-transmitting materials result in low light transmittance and poor display effects; second, the durability and anti-interference capabilities of the touch layer are insufficient, which can easily lead to false touches or delayed responses; finally, the existing technology lacks a comprehensive solution for intelligently adjusting the in-vehicle environment, and cannot effectively meet users' needs for multi-functions and interactivity. Summary of the invention

[0005] The technical problem to be solved by the present invention is: in view of the shortcomings of the prior art, a smart translucent skin structure that can be operated by touch and a preparation method thereof are provided, which can realize the function of touch operation while maintaining the beauty and durability of the automobile interior skin structure, so as to improve the intelligence level of the automobile interior and the user experience.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: 1. A touch-operable intelligent light-transmitting surface structure The present invention provides a touch-operable intelligent light-transmitting epidermis structure, comprising a surface leather layer 1, an intermediate supporting layer 2, a screen display layer 3 and a bottom interface layer 4, wherein the intermediate supporting layer 2 is supported between the surface leather layer 1 and the bottom interface layer 4, and a screen display layer 3 is embedded in the middle of the intermediate supporting layer 2, wherein the screen display layer 3 is composed of a flexible substrate, a light-emitting layer and a sensing layer, and a control circuit 5 of the screen display layer is sandwiched between the screen display layer 3 and the bottom interface layer 4, and an output end of the control circuit 5 is connected to an output interface 6 installed at a preset point at the bottom of the bottom interface layer 4, and the output interface 6 is connected to a vehicle control system.

[0007] Furthermore, the surface leather layer 1 is made of polyurethane material, the molecular weight of which is in the range of 30000-100000 g / mol, and the polyurethane raw material is added with masterbatch of preset proportion and color according to the requirements of automobile interior dyeing; The surface leather layer 1 is formed by a hot pressing process, and a hot pressing mold of the surface leather layer 1 is provided with preset textures according to the surface texture requirements of the automobile interior.

[0008] Further, the intermediate support layer 2 is made of ethylene-vinyl acetate copolymer material, the molecular weight of which is in the range of 50000-200000 g / mol, the melt index is in the range of 5-20 g / 10 min, and contains 10%-30% by mass of vinyl acetate; The content of vinyl acetate in the ethylene-vinyl acetate copolymer (EVA) represents the mass proportion (mass percentage) of vinyl acetate monomer in the entire copolymer. The content of vinyl acetate directly affects the performance of the EVA resin. The higher the content of vinyl acetate, the better the flexibility, transparency and viscosity of the resin, but the rigidity and hardness will decrease.

[0009] The intermediate support layer 2 is formed by a hot pressing process, and a window area of ​​a preset size is cut out in the middle to embed the picture display layer 3.

[0010] Furthermore, the flexible substrate of the screen display layer 3 is made of polyethylene terephthalate material or polyimide material, the molecular weight of the polyethylene terephthalate material is in the range of 50,000 to 100,000 g / mol, and the molecular weight of the polyimide material is in the range of 80,000 to 150,000 g / mol; The light-emitting layer adopts OLED organic light-emitting diodes, the sensing layer adopts capacitive touch sensors, and the touch sensors use silver nanowires as touch sensing materials. The silver nanowire materials are printed into two conductive layers, horizontally and vertically, by screen printing to form a grid structure.

[0011] Furthermore, the bottom interface layer 4 is made of a high-density polyethylene material with a density ranging from 0.950 to 0.965 g / cm³ and a molecular weight ranging from 400,000 to 600,000 g / mol; An output interface 6 is installed at a preset point at the bottom of the bottom interface layer 4 , and the output interface 6 is used for signal communication between the picture display layer 3 and the automobile control system.

[0012] Furthermore, the control circuit 5 of the picture display layer is made of a flat conductive material, and the output ends of the control circuit 5 are respectively connected to the corresponding output interfaces 6; The automobile control system includes a lighting control system, an air conditioning control system, a player control system and a seat control system.

[0013] 2. A method for preparing a touch-operable intelligent light-transmitting epidermal structure Based on the same inventive concept, the present invention also provides a method for preparing the above-mentioned touch-operable intelligent light-transmitting epidermal structure, which specifically comprises the following steps: S100, preparation of surface leather layer: Firstly, a transparent polyurethane with a preset molecular weight is selected as the main material of the surface leather layer, and a masterbatch with a preset proportion and color is added according to the requirements of automobile interior dyeing. Then, the polyurethane material is processed into the surface leather layer by a hot pressing molding process, and a preset texture is set in the hot pressing molding mold according to the surface texture requirements of the automobile interior. S200, preparing the middle support layer and integrating the screen display layer: Firstly, an ethylene-vinyl acetate copolymer material with a preset molecular weight is selected and processed into an intermediate support layer through a hot pressing process, and a window area for embedding a picture display layer is cut out in the middle of the intermediate support layer, and then the substrate processing of the picture display layer, the integration of the light-emitting layer and the integration of the sensing layer are respectively performed; S300, preparation of bottom interface layer: The base material of the bottom interface layer is made of high-density polyethylene material with a preset molecular weight, and is tightly combined with the middle support layer through a lamination process. At the same time, the control circuit of the picture display layer is sandwiched between the picture display layer and the bottom interface layer, and the output interface is installed; S400, installation in the car interior: The intelligent light-transmitting skin structure is wrapped on the frame or seat inside the car, and the output interface is connected to the car control system so that the touch signal and the display signal can be transmitted normally.

[0014] Among them, the surface leather layer selects transparent polyurethane with a molecular weight of 30000~100000g / mol as the main material, and the hot pressing temperature of the hot pressing molding process is controlled at 150~180°C, the pressure is controlled at 0.5~1 Mpa, and the molding time is controlled at 2~5 minutes; and the polyurethane raw material is added with a masterbatch of 1%~2% by mass.

[0015] Furthermore, the preparation of the intermediate support layer and the integration of the picture display layer specifically include: S210, support layer forming The support layer is made of ethylene-vinyl acetate copolymer material with a molecular weight of 50,000-200,000 g / mol, containing 10%-30% vinyl acetate by mass, and a melt index of 5-20 g / 10 min. It is processed into an intermediate support layer by a hot pressing process and the hot pressing temperature is controlled at 120-140° C. S221, substrate processing of the screen display layer A polyethylene terephthalate with a molecular weight of 50,000-100,000 g / mol is selected as the substrate, and the thickness of the substrate is 50-100 microns; S222, light-emitting layer integration The light-emitting layer adopts OLED organic light-emitting diode; S223, Sensing layer integration A capacitive touch sensing layer is integrated above the light emitting layer. The touch sensing layer uses silver nanowires as touch sensing materials, and the silver nanowire materials are printed into two conductive layers, horizontally and vertically, by screen printing to form a grid structure.

[0016] Furthermore, the preparation of the bottom interface layer specifically includes: S310, polyethylene base molding The bottom interface layer substrate is made of high-density polyethylene material with a molecular weight of 400,000-600,000 g / mol and a density of 0.950-0.965 g / cm³, and is closely combined with the intermediate support layer through a lamination process. The lamination temperature of the lamination process is controlled at 100-120°C, the pressure is controlled at 0.3-0.8 MPa, and the time is controlled at 2-5 minutes; S320, integrated screen display layer control circuit The control circuit of the screen display layer is sandwiched between the screen display layer and the bottom interface layer, and the control circuit of the screen display layer is made of a flat conductive material with ductility; S330, set circuit interface According to the distribution of the control circuit in step S320, the points of the output end of the control circuit are marked at the corresponding positions on the bottom surface of the bottom interface layer, and holes are opened at the marked points on the bottom interface layer and corresponding output interfaces are installed to connect with the vehicle control system.

[0017] Compared with the prior art, the present invention has the following main advantages: 1. In view of the problem that traditional materials often sacrifice wear resistance and tear resistance while achieving good light transmittance, the intelligent light-transmitting skin structure of the present invention combines polyurethane (PU) and ethylene-vinyl acetate copolymer (EVA) in material selection, so that the overall structure has excellent wear resistance, tear resistance and high temperature resistance; compared with the existing technology, the stability and reliability of the light-transmitting skin of the present invention under extreme climatic conditions are significantly improved.

[0018] 2. In view of the problems of insufficient sensitivity and false touches that often occur in existing touch screens during use, the present invention integrates silver nanowire capacitive touch sensing technology. By using silver nanowires as conductive materials and combining them with screen printing to form a high-sensitivity capacitive touch layer, the touch sensitivity and response speed are significantly improved. Compared with traditional touch screens, the touch layer of the present invention can identify user operations more quickly and accurately, greatly reducing the probability of false touches, and providing users with a smoother operating experience.

[0019] 3. The present invention combines multiple functional layers (such as the light-emitting layer, the sensing layer and the supporting layer) and optimizes the process flow to achieve a simpler structural design, and the control circuit is integrated inside the intelligent light-transmitting surface structure, which facilitates the installation operation while ensuring the overall aesthetics; by connecting the touch layer with the bottom interface layer, centralized control of multiple functions such as interior lighting, air conditioning, and seats can be achieved; this integrated design simplifies the user's operating process, allowing it to adjust the interior environment more conveniently, improves the vehicle's intelligence level, and meets the expectations of modern consumers for the versatility of automotive interiors.

[0020] 4. The pattern treatment of the surface leather layer of the present invention makes the appearance of the smart light-transmitting skin beautiful and elegant. The high-transparency skin material can ensure that the image displayed by the light-transmitting skin is clearly visible. The excellent surface strength prevents the smart light-transmitting skin from being easily scratched during use.

[0021] 5. The screen display layer of the present invention adopts an OLED self-luminous unit, which does not require an additional light source, improves applicability, and reduces the space occupied by the finished product; at the same time, the flexibility of OLED ensures that it will not be damaged when following the bending of the transparent surface, making it easy for the transparent surface to be wrapped and installed on surfaces of different shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1This is an overall schematic diagram of the intelligent light-transmitting epidermis structure in an embodiment of the present invention; Figure 2 A side cross-sectional view of the intelligent light-transmitting epidermis structure in an embodiment of the present invention; Figure 3 Flow chart of the preparation method in an embodiment of the present invention.

[0023] In the figure: 1- surface leather layer; 2- middle support layer; 3- screen display layer; 4- bottom interface layer; 5- screen display layer control circuit; 6- screen display layer output interface. DETAILED DESCRIPTION

[0024] 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 the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] It should be pointed out that, according to the needs of implementation, the various steps / components described in this application can be split into more steps / components, and two or more steps / components or partial operations of steps / components can be combined into new steps / components to achieve the purpose of the present invention.

[0026] Embodiment 1. This embodiment provides an intelligent light-transmitting surface structure that can be operated by touch. By integrating a flexible touch screen and connecting to the vehicle's internal environmental control system, passengers in the vehicle can adjust the environment inside the vehicle according to their respective needs, such as lighting, temperature, music, seats, etc., and can display constantly changing patterns or pictures when no operation is required. It has both a sense of technology and a sense of operation, while improving the comfort of riding.

[0027] Specifically, the intelligent light-transmitting surface comprises a surface leather layer, an intermediate support layer and a picture display layer, and a bottom interface layer.

[0028] Preferably, the material of the surface leather layer should ensure high transparency, so polyurethane (PU) is selected, which has high transparency and good wear resistance, tear resistance and high temperature resistance. The molecular weight of polyurethane (PU) ranges from 30,000 to 100,000 g / mol, and a moderate molecular weight is selected to ensure that polyurethane has a good balance of light transmittance, wear resistance, flexibility and strength.

[0029] Preferably, a certain amount of masterbatch can be added to the polyurethane (PU) raw material as needed, and the addition amount is controlled at 1%-2%. This range can effectively control the color and light transmittance of the polyurethane, ensuring that the color of the surface leather layer is uniform and does not excessively affect the light transmittance of the screen display layer. The dyeing area is planned as needed. By controlling the shape during the mold design stage, masterbatch can be added only to the area that needs to be dyed during the molding process, thereby avoiding unnecessary dyeing that affects the transparency of the screen display layer.

[0030] Optionally, if a special texture effect is required for the surface leather layer, a preset texture can be set on the surface of the mold, and the surface texture can be simultaneously formed by mold pressing.

[0031] Preferably, the middle layer includes an intermediate support layer and a picture display layer, wherein the intermediate support layer is a flexible material ethylene-vinyl acetate copolymer (EVA), whose molecular weight ranges from 50,000 to 200,000 g / mol, vinyl acetate (VA) content ranges from 10% to 30%, and melt index ranges from 5 to 20 g / 10 min. The material has excellent flexibility and optical diffusion properties. A space is reserved in the support layer for placing the picture display layer.

[0032] The content of vinyl acetate in the ethylene-vinyl acetate copolymer (EVA) represents the mass proportion (mass percentage) of vinyl acetate monomer in the entire copolymer. The content of vinyl acetate directly affects the performance of the EVA resin. The higher the content of vinyl acetate, the better the flexibility, transparency and viscosity of the resin, but the rigidity and hardness will decrease.

[0033] The picture display layer is a capacitive flexible touch screen, which includes a flexible substrate, a light-emitting layer and a sensing layer.

[0034] Preferably, the flexible substrate is made of materials such as polyethylene terephthalate (PET), polyimide (PI), etc. Among them, the molecular weight range of PET is 50,000 to 100,000 g / mol, and the molecular weight range of PI is 80,000 to 150,000 g / mol to balance flexibility, transparency and strength.

[0035] Preferably, the light-emitting layer adopts an organic light-emitting diode (OLED), the main materials of which include light-emitting materials, electron transport materials, hole transport materials, anode materials and cathode materials. Among them, the light-emitting materials can be divided into small molecule organic materials, including Alq 3 、Ir(ppy) 3 etc., and polymer organic materials, including poly(ethylene terephthalate) (PLED), etc.; electron transport materials include BPhen, Alq 3etc.; hole transport materials include NPD, TPD, etc.; anode materials include ITO, etc.; cathode materials include barium (Ba), aluminum (Al), etc.

[0036] Preferably, the sensing layer is a capacitive touch sensor, which senses touch by utilizing the capacitance change formed by human body capacitance and the screen, and silver nanowires are selected as the touch sensing material.

[0037] The output end of the picture display layer is connected to the bottom interface layer, and then connected to the corresponding internal control circuit of the car through the interface, so as to achieve the purpose of adjusting the internal environment of the car by operating the touch layer.

[0038] The in-car control circuit includes a lighting control circuit, an air-conditioning control circuit, a player control circuit, a seat control circuit, and the like.

[0039] Preferably, the bottom interface layer provides support for the entire light-transmitting skin and enhances mechanical strength, so a high-density polyethylene (HDPE) with a density range of 0.950 g / cm³ to 0.965 g / cm³ is used, while the molecular weight is controlled in the range of 400,000 g / mol to 600,000 g / mol to ensure a balance between processability and mechanical strength.

[0040] Embodiment 2: This embodiment provides a touch-operable intelligent light-transmitting epidermis structure, such as Figure 1~2 As shown, the surface leather layer 1 is made of polyurethane (PU) with high transparency. In addition to ensuring that light can be transmitted evenly, the material is also wear-resistant and high-temperature resistant, can effectively resist scratches and daily wear, adapt to the changing temperature environment inside the car, and prevent material deformation or failure. In order to enhance aesthetics and personalization, the surface layer of the skin can achieve a special surface texture effect by setting patterns in the mold. This texture design can not only improve the visual effect, but also enhance the user's tactile experience.

[0041] Furthermore, the material used for the intermediate support layer 2 is ethylene-vinyl acetate copolymer (EVA), which can provide structural support without affecting the touch and display effects. EVA material also has good shock resistance and buffering properties, can absorb external impact and protect internal electronic components. The support layer plays the role of bearing the display layer, and its optical diffusion performance ensures that the light source is evenly distributed to avoid local bright spots. The flexibility of EVA makes the entire structure more flexible and adaptable to complex curved surface designs.

[0042] Furthermore, the screen display layer 3 is located in the middle of the middle support layer 2, and the layer can be divided into three parts: a flexible substrate, a light-emitting layer, and a sensing layer. The flexible substrate of the screen display layer preferably uses polyethylene terephthalate (PET), which has good flexibility, heat resistance and transparency, can support the entire touch sensing layer, and provide a certain bending ability to adapt to the curved surface design of the car interior. The light-emitting layer uses organic light-emitting diode (OLED) material, which has high flexibility and self-luminous characteristics. Because it does not require a backlight source, it can reduce the thickness of the entire display layer and improve the contrast and color saturation of the display effect. The sensing layer uses a capacitive touch sensor, and its touch sensing material is selected from silver nanowires. Silver nanowires have high conductivity and transparency, can accurately sense the contact between the user's finger and the screen, perceive the touch operation through the change of capacitance, and provide multi-touch function.

[0043] Furthermore, the bottom interface layer 4 is made of high-density polyethylene (HDPE) material, which has high mechanical strength, good durability and impact resistance. In addition, the HDPE material also has good chemical stability and can be used in the car for a long time without degradation or aging.

[0044] Furthermore, the electronic component 5 is a control circuit of the screen display layer, which is made of a flat conductive material, compressed between the screen display layer 3 and the bottom interface layer 4, and the output end of the control circuit has a marked point reserved at the corresponding position at the bottom of the bottom interface layer 4. The electronic component 6 is the output interface of the screen display layer, which can be installed at any reserved marked point and connected to the vehicle control system.

[0045] Embodiment 3: Based on the same inventive concept, this embodiment also provides a method for preparing a touch-operable intelligent light-transmitting surface structure as described above, aiming to realize the integration of light transmission, touch and display functions of automobile interior.

[0046] like Figure 3 As shown, the specific steps include: S100, preparation of surface leather layer S110, Selection and Forming of Polyurethane (PU) Materials First, a transparent polyurethane (PU) with a molecular weight of 50,000 g / mol was selected as the main material for the surface leather layer. PU with this molecular weight has good transparency and appropriate flexibility, which can meet the high transparency requirements of the surface leather layer, and has strong wear resistance and tear resistance. The polyurethane material is processed into the leather layer using a hot pressing process to ensure that the surface is compatible with the display elements of the lower layer and can provide good light transmittance.

[0047] Preferably, the hot pressing temperature is controlled between 150°C and 180°C to ensure that the material is fully formed and to avoid structural degradation. The pressure is controlled between 0.5 and 1 MPa to ensure that the surface material is uniformly formed. The molding time should be within 2 to 5 minutes to ensure that the material is fully cured and has sufficient mechanical properties.

[0048] S120, Addition of Masterbatch According to specific design requirements, 1%-2% masterbatch can be added to the polyurethane raw material to give the leather layer a certain color effect. However, in order to maintain the light transmittance of the display layer, it is necessary to avoid adding masterbatch in the display area of ​​the screen to ensure that the light transmittance area is not disturbed and improve the clarity of the visual effect.

[0049] S130, Texture Design When special tactile and aesthetic effects are required, preset patterns can be set on the mold surface, and the surface layer can be synchronously textured by hot pressing. This step helps to improve the texture and aesthetics of the surface without affecting its light transmission function.

[0050] S200: Prepare the middle support layer and integrate the screen display layer S210, support layer forming The support layer is made of ethylene-vinyl acetate copolymer (EVA) material with a molecular weight of 100,000 g / mol, a vinyl acetate content of 20%, and a melt index of 6 g / 10min (190°C, 2.16 kg). It is processed into a film through a hot pressing process. This material has excellent flexibility and optical diffusion properties, and is suitable for supporting the display layer and providing a uniform light diffusion effect. The EVA film is formed using a hot press, and the display area is reserved according to the design, and a window of a preset size is cut out in the middle to embed the display layer.

[0051] Preferably, the hot pressing temperature is controlled at 120°C to 140°C to ensure that the EVA is tightly combined with the surface material without destroying its flexibility and diffusion properties.

[0052] S221, substrate processing of the screen display layer The display layer is a flexible touch screen, and polyethylene terephthalate (PET) with a molecular weight of 80,000 g / mol is used as the substrate. The thickness of the PET material is preferably 50 to 100 microns, which can provide sufficient flexibility and stability. In order to enhance adhesion, it is necessary to first remove surface impurities through ultrasonic cleaning, and then use plasma surface treatment to improve the adhesion between the substrate and the light-emitting layer.

[0053] S222, light-emitting layer integration The light-emitting layer uses organic light-emitting diode (OLED) materials, which have the characteristics of self-luminescence and do not require additional backlight sources. They can achieve efficient light emission on curved and complex interior surfaces. OLED integration uses evaporation technology and is stacked in the order of cathode-organic light-emitting layer-anode. The organic light-emitting layer includes a hole transport layer, a light-emitting layer, and an electron transport layer. Indium tin oxide (ITO) is deposited on the anode by evaporation, metal aluminum (Al) is deposited on the cathode, and iridium-based compounds (Ir(ppy)) are deposited on the light-emitting layer. 3 ), deposit N, N'-di(α-naphthyl)-N, N'-diphenyl-4, 4'-benzidine (α-NPD) on the hole transport layer, and deposit tri(8-hydroxyquinoline)aluminum (Alq 3 ).

[0054] S223, Sensing layer integration The capacitive touch sensing layer is integrated above the light-emitting layer. The sensing layer uses silver nanowires as a conductive material, and its high conductivity and transparency ensure that the touch layer has high sensitivity. The silver nanowire material is printed into two conductive layers, horizontal and vertical, using the screen printing method to form a grid structure to achieve accurate touch response.

[0055] S300, preparation of bottom interface layer S310, polyethylene base molding The bottom interface layer substrate is made of high-density polyethylene (HDPE) material with a molecular weight of 600,000 g / mol and a density of 0.95 g / cm³, which is tightly bonded to the middle support layer through a lamination process. The HDPE material not only provides good mechanical strength, but also enhances the reflection and uniformity of light by applying a reflective coating on its surface.

[0056] Preferably, the lamination temperature is controlled between 100°C and 120°C, the pressure is controlled between 0.3 and 0.8 MPa, and the time is controlled between 2 and 5 minutes to ensure that the HDPE and the middle layer material are firmly bonded.

[0057] S320, integrated screen display layer control circuit The circuit of the screen display layer is arranged between the support layer and the bottom interface layer. Flat wires with ductility are selected to facilitate circuit connection between layers without increasing the overall thickness or affecting the light transmission effect.

[0058] S330, set circuit interface According to the distribution of the circuit in step S320, the position of the circuit outlet is marked on the bottom interface layer. When it is necessary to connect with the car control circuit, select the appropriate marked position, drill and install the interface, and connect to the car control system. The rationality of the distribution should be considered when designing the circuit interface so that it can be connected to different control systems in the car at multiple locations, including lighting, seat adjustment, air conditioning, etc.

[0059] Preferably, the number of circuit outlets should be large and wide, ensuring that the interface position can be flexibly selected according to the actual location during installation to improve compatibility.

[0060] S400, Installation in the car Finally, the intelligent light-transmitting skin is wrapped on the frame or seat inside the car, and connected to the car circuit through the interface layer to ensure that the touch signal and display signal can be transmitted normally. After installation, users can adjust the lighting, air conditioning and seat settings in the car through touch operation, realizing intelligent control of the car environment.

[0061] Furthermore, all parts involved in this application that are not described in detail are the same as the prior art or are implemented using the prior art.

[0062] In summary, the present invention provides an automotive interior solution that is both aesthetically pleasing, functional, and intelligent, thereby improving the overall user experience: 1. The intelligent light-transmitting skin structure of the present invention has been carefully considered in material selection. The combination of polyurethane (PU) and ethylene-vinyl acetate copolymer (EVA) makes the overall structure have excellent wear resistance, tear resistance and high temperature resistance. Compared with the prior art, the stability and reliability of the light-transmitting skin of the present invention under extreme climatic conditions have been significantly improved.

[0063] 2. The control circuit of the intelligent light-transmitting surface of the present invention is integrated inside, which facilitates installation while ensuring the overall aesthetics; by connecting the touch layer with the bottom interface layer, centralized control of multiple functions such as in-vehicle lighting, air conditioning, and seats can be achieved; this integrated design simplifies the user's operating process, allowing it to adjust the in-vehicle environment more conveniently, improves the vehicle's intelligence level, and meets the expectations of modern consumers for the versatility of automotive interiors.

[0064] 3. The pattern treatment of the surface leather layer of the present invention makes the appearance of the smart light-transmitting skin beautiful and elegant. The high-transparency skin material can ensure that the image displayed by the light-transmitting skin is clear and visible. The excellent surface strength prevents the smart light-transmitting skin from being easily scratched during use.

[0065] 4. The screen display layer of the present invention adopts OLED self-luminous units, which does not require additional light sources, improves applicability, and reduces the space occupied by the finished product. At the same time, the flexibility of OLED ensures that it will not be damaged when following the bending of the light-transmitting skin, making it easy for the light-transmitting skin to be wrapped and installed on surfaces of different shapes.

[0066] 5. The present invention integrates silver nanowire capacitive touch sensing technology, which significantly improves touch sensitivity and response speed. Compared with traditional touch screens, the touch layer of the present invention can more quickly and accurately identify user operations, greatly reducing the probability of false touches, and providing users with a smoother operating experience.

[0067] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A touch-operable intelligent light-transmitting surface structure, characterized in that: The vehicle comprises a surface leather layer (1), an intermediate support layer (2), a picture display layer (3) and a bottom interface layer (4), wherein the intermediate support layer (2) is supported between the surface leather layer (1) and the bottom interface layer (4), and a picture display layer (3) is embedded in the middle of the intermediate support layer (2), wherein the picture display layer (3) is composed of a flexible substrate, a light-emitting layer and a sensing layer, and a control circuit (5) of the picture display layer is sandwiched between the picture display layer (3) and the bottom interface layer (4), and an output end of the control circuit (5) is connected to an output interface (6) installed at a preset point on the bottom of the bottom interface layer (4), and the output interface (6) is connected to a vehicle control system.

2. The touch-operable intelligent light-transmitting surface structure according to claim 1, characterized in that: The surface leather layer (1) is made of a polyurethane material with a molecular weight ranging from 30,000 to 100,000 g / mol, and a masterbatch of a preset proportion and color is added to the polyurethane raw material according to the requirements for automobile interior dyeing; The surface leather layer (1) is formed by a hot pressing process, and a preset texture is arranged in the hot pressing mould of the surface leather layer (1) according to the surface texture requirements of the automobile interior.

3. The touch-operable intelligent light-transmitting surface structure according to claim 1, characterized in that: The intermediate support layer (2) is made of ethylene-vinyl acetate copolymer material, with a molecular weight ranging from 50,000 to 200,000 g / mol, a melt index ranging from 5 to 20 g / 10 min, and containing 10% to 30% by mass of vinyl acetate; The intermediate support layer (2) is formed by a hot pressing process, and a window area of ​​a preset size is cut out in the middle to embed the picture display layer (3).

4. The touch-operable intelligent light-transmitting surface structure according to claim 1, characterized in that: The flexible substrate of the screen display layer (3) is made of polyethylene terephthalate material or polyimide material, the molecular weight of the polyethylene terephthalate material is in the range of 50,000 to 100,000 g / mol, and the molecular weight of the polyimide material is in the range of 80,000 to 150,000 g / mol; The light-emitting layer adopts OLED organic light-emitting diodes, the sensing layer adopts capacitive touch sensors, and the touch sensors use silver nanowires as touch sensing materials. The silver nanowire materials are printed into two conductive layers, horizontally and vertically, by screen printing to form a grid structure.

5. The touch-operable intelligent light-transmitting surface structure according to claim 1, characterized in that: The bottom interface layer (4) is made of a high-density polyethylene material with a density ranging from 0.950 to 0.965 g / cm³ and a molecular weight ranging from 400,000 to 600,000 g / mol; An output interface (6) is installed at a preset point at the bottom of the bottom interface layer (4), and the output interface (6) is used for signal communication between the picture display layer (3) and the automobile control system.

6. The touch-operable intelligent light-transmitting surface structure according to claim 5, characterized in that: The control circuit (5) of the picture display layer is made of a flat conductive material, and the output ends of the control circuit (5) are respectively connected to corresponding output interfaces (6); The automobile control system includes a lighting control system, an air conditioning control system, a player control system and a seat control system.

7. A method for preparing the intelligent light-transmitting epidermal structure according to any one of claims 1 to 6, characterized in that: The steps include: S100, preparation of surface leather layer: Firstly, a transparent polyurethane with a preset molecular weight is selected as the main material of the surface leather layer, and a masterbatch with a preset proportion and color is added according to the requirements of automobile interior dyeing. Then, the polyurethane material is processed into the surface leather layer by a hot pressing molding process, and a preset texture is set in the hot pressing molding mold according to the surface texture requirements of the automobile interior. S200, preparing the middle support layer and integrating the screen display layer: Firstly, an ethylene-vinyl acetate copolymer material with a preset molecular weight is selected and processed into an intermediate support layer through a hot pressing process, and a window area for embedding a picture display layer is cut out in the middle of the intermediate support layer, and then the substrate processing of the picture display layer, the integration of the light-emitting layer and the integration of the sensing layer are respectively performed; S300, preparation of bottom interface layer: The base material of the bottom interface layer is made of high-density polyethylene material with a preset molecular weight, and is tightly combined with the middle support layer through a lamination process. At the same time, the control circuit of the picture display layer is sandwiched between the picture display layer and the bottom interface layer, and the output interface is installed; S400, installation in the car interior: The intelligent light-transmitting skin structure is wrapped on the frame or seat inside the car, and the output interface is connected to the car control system so that the touch signal and the display signal can be transmitted normally.

8. The preparation method according to claim 7, characterized in that: The surface leather layer selects transparent polyurethane with a molecular weight of 30000~100000 g / mol as the main material, and the hot pressing temperature of the hot pressing molding process is controlled at 150~180°C, the pressure is controlled at 0.5~1 Mpa, and the molding time is controlled at 2~5 minutes; and 1%~2% by mass of masterbatch is added to the polyurethane raw material.

9. The preparation method according to claim 7, characterized in that: The method of preparing the intermediate support layer and integrating the picture display layer specifically includes: S210, support layer forming The support layer is made of ethylene-vinyl acetate copolymer material with a molecular weight of 50,000-200,000 g / mol, containing 10%-30% vinyl acetate by mass, and a melt index of 5-20 g / 10 min. It is processed into an intermediate support layer by a hot pressing process and the hot pressing temperature is controlled at 120-140° C. S221, substrate processing of the screen display layer A polyethylene terephthalate with a molecular weight of 50,000-100,000 g / mol is selected as the substrate, and the thickness of the substrate is 50-100 microns; S222, light-emitting layer integration The light-emitting layer adopts OLED organic light-emitting diode; S223, Sensing layer integration A capacitive touch sensing layer is integrated above the light emitting layer. The touch sensing layer uses silver nanowires as touch sensing materials, and the silver nanowire materials are printed into two conductive layers, horizontally and vertically, by screen printing to form a grid structure.

10. The preparation method according to claim 7, characterized in that: The preparation of the bottom interface layer specifically includes: S310, polyethylene base molding The bottom interface layer substrate is made of high-density polyethylene material with a molecular weight of 400,000-600,000 g / mol and a density of 0.950-0.965 g / cm³, and is closely combined with the intermediate support layer through a lamination process. The lamination temperature of the lamination process is controlled at 100-120°C, the pressure is controlled at 0.3-0.8 MPa, and the time is controlled at 2-5 minutes; S320, integrated screen display layer control circuit The control circuit of the screen display layer is sandwiched between the screen display layer and the bottom interface layer, and the control circuit of the screen display layer is made of a flat conductive material with ductility; S330, set circuit interface According to the distribution of the control circuit in step S320, the output terminals of the control circuit are marked at the corresponding positions on the bottom surface of the bottom interface layer, and holes are opened at the marked points on the bottom interface layer and corresponding output interfaces are installed to facilitate docking with the vehicle control system.

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