Touch dimming film, touch dimming glass and vehicle

Abstract

The invention provides a touch dimming film, touch dimming glass and a vehicle, and belongs to the technical field of touch dimming, and the touch dimming film comprises a touch film which comprises an insulating base layer and a touch layer; the dimming film comprises a visible area and a non-visible area, and at least part of the surface of the visible area is covered by the touch film; the non-visual area is provided with a control module electrically connected with the touch control film and the dimming film. The transparent conductive adhesive layer is arranged between the dimming film and the insulating base layer and is used for fixedly connecting the touch film and the dimming film and shielding an interference signal generated on the touch film when the dimming film is electrified; the dimming touch screen has the advantages that the dimming film and the touch film are integrated through the transparent conductive adhesive layer in a bonding and fixing mode, the complex manufacturing process needed at present is omitted, the production process is greatly simplified, the manufacturing period is shortened, and meanwhile the equipment investment and the material loss cost are reduced. And the transparent conductive adhesive layer has electric conduction and electromagnetic shielding functions, so that integration of dual functions is realized, and signal crosstalk between the electrode layer and the touch layer in the dimming film is effectively inhibited.

Description

Technical Field

[0001] The present invention belongs to the technical field of dimming films and relates to a touch-controlled dimming film, touch-controlled dimming glass and a vehicle. Background Art

[0002] With the rapid development of smart cars and electronic devices, touch-enabled switchable glass is increasingly being used in applications such as in-vehicle displays and architectural curtain walls. This advanced switchable glass can dynamically adjust its light transmittance, while the integrated touch function further enhances the convenience and intuitiveness of user interaction.

[0003] Despite the promising prospects of this technology, integrating touch and dimming functions into a dimming film still faces a series of challenges in existing technologies. Specifically, these challenges mainly manifest in process complexity and cost control. Current technical solutions often require complex manufacturing steps to complete the integration of the touch and dimming layers, which not only increases production cycle and equipment investment, but also puts a test on the reliability of the final product.

[0004] Therefore, while simplifying the production process and reducing costs, improving the shielding efficiency of the touch-sensitive dimming film and its stability under different environmental conditions has become a key technical problem that urgently needs to be solved in the industry. Summary of the Invention

[0005] The purpose of the present invention is to address the above-mentioned problems in the existing technology, introduce a transparent conductive adhesive layer to replace the existing production and preparation steps, and integrate the shielding and bonding functions into a single layer.

[0006] The object of the present invention can be achieved through the following technical solutions: A touch-sensitive dimming film, comprising:

[0007] A touch film comprising an insulating base layer and a touch layer;

[0008] A dimming film comprising a visible area and a non-visible area, wherein at least a portion of the surface of the visible area is covered by the touch film; and the non-visible area is provided with a control module electrically connected to the touch film and the dimming film;

[0009] The transparent conductive adhesive layer is arranged between the dimming film and the insulating base layer, and is used for fixedly connecting the touch film and the dimming film, and shielding the interference signal generated by the dimming film to the touch film when it is energized.

[0010] In the above-mentioned touch-sensitive dimming film, the touch layer includes at least three independent and successively arranged touch areas, each touch area is electrically connected to the control module; the control module is configured to recognize the linear sliding action of the user's finger continuously sliding across at least three touch areas, and change the transmittance of the dimming film in response to the above action.

[0011] In the above-mentioned touch dimming film, the control module can detect the change in the electrical parameters corresponding to any touch area when the user's finger approaches or touches the touch area; when the electrical parameters of a touch area gradually return to the initial value from exceeding the critical value, and at the same time, the electrical parameters of the adjacent touch area of the touch area gradually change from the initial value to exceeding the critical value, the control module determines that the user's finger slides from the touch area to the adjacent touch area.

[0012] In the above-mentioned touch-sensitive dimming film, the control module is configured to adjust the change direction and change amplitude of the light transmittance of the dimming film according to the sliding direction of the user's finger on the touch area and the number of touch areas continuously slid across.

[0013] In the above-mentioned touch dimming film, the touch film further includes a transparent protective layer, and the touch layer is arranged between the transparent protective layer and the insulating base layer.

[0014] In the above-mentioned touch-sensitive dimming film, the material of the touch layer is ITO.

[0015] In the above-mentioned touch dimming film, the total thickness of the touch film and the transparent conductive adhesive layer is less than 50 μm.

[0016] In the above-mentioned touch dimming film, the dimming film includes a first base film layer and a second base film layer, a first electrode layer and a second electrode layer are stacked between the first base film layer and the second base film layer, and a dimming layer is arranged between the first electrode layer and the second electrode layer, and the first base film layer is bonded and fixed to the transparent conductive adhesive layer.

[0017] A touch dimming glass comprises the above-mentioned touch dimming film, and further comprises a first glass layer and a second glass layer, wherein the touch dimming film is arranged between the first glass layer and the second glass layer.

[0018] A vehicle comprises the touch-controlled dimming glass.

[0019] Compared to existing technologies, the present invention integrates the dimming film and touch control film through a transparent conductive adhesive layer through bonding and fixing. This eliminates the complex manufacturing process required today, significantly simplifies the production process, shortens the manufacturing cycle, and reduces equipment investment and material loss costs. Furthermore, the transparent conductive adhesive layer combines electrical conductivity and electromagnetic shielding, achieving dual-functionality. The conductive adhesive's conductive network, such as silver nanowires and graphene, forms a continuous shielding layer, effectively suppressing signal crosstalk between the electrode layer and the touch control layer in the dimming film, ensuring touch sensitivity and dimming stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a communication connection diagram of the present invention.

[0022] In the figure, 100, touch film; 101, insulating base layer; 102, transparent conductive adhesive layer; 103, transparent protective layer; 104, touch layer; 105, touch area; 200, dimming film; 201, first base film layer; 202, second base film layer; 203, first electrode layer; 204, second electrode layer; 205, dimming layer; 300, visible area; 301, non-visible area. DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0024] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] like Figure 1-Figure 2 As shown, a touch-sensitive dimming film includes:

[0026] The touch film 100 includes an insulating base layer 101 and a touch layer 104;

[0027] The dimming film 200 includes a visible area 300 and a non-visible area 301. At least a portion of the surface of the visible area 300 is covered by the touch film 100. The non-visible area 301 is provided with a control module electrically connected to the touch film 100 and the dimming film 200.

[0028] The transparent conductive adhesive layer 102 is disposed between the dimming film 200 and the insulating base layer 101 to securely connect the touch film 100 and the dimming film 200 and to shield the touch film 100 from interference signals generated when the dimming film 200 is powered on.

[0029] In this embodiment, the transparent conductive adhesive layer 102 integrates the dimming film 200 with the touch film 100 through bonding, eliminating the complex manufacturing process required today. This significantly simplifies the production process, shortens the manufacturing cycle, and reduces equipment investment and material loss costs. Furthermore, the transparent conductive adhesive layer 102 provides both electrical conductivity and electromagnetic shielding, achieving dual-function integration. This effectively suppresses signal crosstalk between the electrode layer in the dimming film 200 and the touch layer 104, ensuring touch sensitivity and dimming stability.

[0030] Further preferably, the touch layer 104 includes at least three independent and successively arranged touch areas 105, and each touch area 105 is electrically connected to the control module; the control module is configured to recognize the linear sliding action of the user's finger continuously sliding across at least three touch areas 105, and change the transmittance of the dimming film 200 in response to the above action.

[0031] In this embodiment, the linear sliding control mode enhances the user's interactive experience, making brightness adjustment more natural and smooth, and enabling precise transmittance control through simple touch gestures. Furthermore, compared to the click-touch control mode, the touch film 100 requires additional printed indicator icons to indicate the location or boundaries of different touch areas. However, since the indicator icons need to be visible to the user, they must be non-transparent. Therefore, the presence of the indicator icons prevents the touch-sensitive dimming film from achieving an overall transparent effect. The sliding touch mode, on the other hand, means that the user does not need to focus on the contact position of the finger, but only on the sliding movement of the finger, thus eliminating the indicator icons.

[0032] In addition, since each touch area 105 works independently, even if some areas fail, it will not completely affect the function of the entire touch layer 104, thereby increasing the reliability and stability of the system. The number and distribution of touch areas 105 can be flexibly adjusted according to needs to meet the needs of different application scenarios.

[0033] When a user's finger swipes across two touch zones 105, the control module recognizes the simple sliding gesture and adjusts the light transmittance accordingly, providing basic brightness control. However, in actual applications, in order to effectively reduce the occurrence of accidental touches, it is recommended to adopt a design solution that swipes across three or more touch zones 105.

[0034] Further preferably, the control module can detect the change in the electrical parameters corresponding to any touch area 105 when the user's finger approaches or touches the touch area 105; when the electrical parameters of a touch area 105 gradually return to the initial value from exceeding the critical value, and at the same time, the electrical parameters of the adjacent touch area 105 of the touch area 105 gradually change from the initial value to exceeding the critical value, the control module determines that the user's finger slides from the touch area 105 to the adjacent touch area 105.

[0035] This detection mechanism not only accurately identifies a user's linear sliding gesture, but also effectively distinguishes between simple touches and sliding operations. For example, in the case of multiple touch zones 105, if the user only briefly touches one of the touch zones 105, no sliding response will be triggered. Only when the finger slides continuously across multiple touch zones 105 will the light transmittance of the switchable film 200 be adjusted based on the sliding direction and the number of touch zones 105 crossed.

[0036] Specifically, when the user's finger approaches or touches the touch area 105, the electrical parameters in the touch area 105 will change due to the human body capacitance effect. Usually, this change is manifested as an increase in the capacitance value. Each touch area 105 is provided with a predefined critical value for determining whether a valid touch or approach event has occurred. Once the electrical parameters of the touch area 105 exceed this critical value, the area is considered to be activated. When the electrical parameters of a touch area 105 gradually return to the initial value from exceeding the critical value, at the same time, the electrical parameters of the adjacent touch area 105 of the touch area 105 gradually rise from the initial value and exceed the critical value, it indicates that the user's touch is moving towards the adjacent area, and it is determined that the user's finger is sliding from one touch area 105 to another touch area 105, and accordingly triggering a corresponding response action to adjust the transmittance of the dimming film 200.

[0037] Further preferably, the control module is configured to adjust the change direction and change amplitude of the light transmittance of the dimming film 200 according to the sliding direction of the user's finger on the touch area 105 and the number of touch areas 105 continuously slid across.

[0038] When the user's finger slides on the touch layer 104, the control module determines the direction of the sliding by detecting the changes in the electrical parameters of each touch area 105, and the sliding distance is determined by the number of touch areas 105 that are slid continuously. For example, after the user's finger slides over three touch areas 105, the control module responds to the above action to make the dimming film 200 produce a unit change in transmittance. On this basis, the amplitude of the change in the transmittance of the dimming film 200 will gradually increase with each additional touch area 105 slid over. The amplitude of the change can be linear, that is, one more unit of transmittance changes for each additional touch area 105 slid over, or it can be nonlinear, that is, the unit change in transmittance is greater than the number of touch areas 105 added. In general, the longer the sliding distance, the greater the change in transmittance.

[0039] The sliding direction determines the trend of the light transmittance change. For example, sliding in a first direction can be set to increase the light transmittance, while sliding in a second direction can be set to decrease the light transmittance, and the first direction is opposite to the second direction.

[0040] The control module dynamically adjusts the transmittance of the switchable film 200 based on the direction of the slide and the number of touch areas 105 slid across. Depending on the application scenario, the change in transmittance can be linear or nonlinear. For example, as an alternative, the transmittance change can be set to accelerate as the slide distance increases, providing a faster brightness adjustment experience. As another alternative, the transmittance change can be set to change at a constant speed as the slide distance increases, allowing for precise control.

[0041] More preferably, the touch film 100 further includes a transparent protective layer 103 , and the touch layer 104 is disposed between the transparent protective layer 103 and the insulating base layer 101 .

[0042] In this embodiment, the transparent protective layer 103 effectively isolates the touch layer 104 from erosion by moisture, oxygen, and physical friction in the external environment, significantly improving the device's weather resistance and abrasion resistance, and preventing performance degradation due to long-term exposure. Simultaneously, while maintaining consistent optical transmittance across the entire structure, the transparent protective layer 103 prevents optical distortion or reflection loss caused by multiple layers, ensuring touch sensitivity and visual transparency for the dimming function. Furthermore, the transparent protective layer 103 enhances the physical stability between film layers, maintaining structural integrity even under dynamic bending, folding, or complex operating conditions, extending service life and ensuring long-term functional reliability.

[0043] Specifically, the material of the transparent protective layer 103 can be photosensitive resin, polymer resin layer or acrylic coating layer.

[0044] More preferably, the material of the touch layer 104 is ITO.

[0045] In this embodiment, the touch layer 104 is made of ITO indium tin oxide (ITO) mainly because it has high light transmittance, low resistivity and excellent chemical stability, which can achieve efficient charge transfer and uniform touch response. At the same time, ITO has high mechanical strength and good weather resistance, can adapt to flexible substrates and withstand environmental corrosion during long-term use, ensuring the long-term reliability of the touch function and the stability of the dimming performance. Its mature process compatibility is conducive to simplifying the mass production process and reducing costs.

[0046] More preferably, the total thickness of the touch film 100 and the transparent conductive adhesive layer 102 is less than 50 um.

[0047] In this embodiment, the total thickness of the touch film 100 and the transparent conductive adhesive layer 102 is controlled within 50 microns. This design significantly improves the overall flexibility and lightweight characteristics of the device, making it easier to adhere to curved or complex-shaped substrates such as automotive glass, while significantly reducing material usage and lowering energy consumption. The thin-layer structure also effectively reduces light refraction and reflection losses, maintaining high light transmittance, ensuring that the visual transparency of the dimming and touch functions is not affected, and is more suitable for the processing requirements of flexible electronic products.

[0048] Further preferably, the dimming film 200 includes a first base film layer 201 and a second base film layer 202, a first electrode layer 203 and a second electrode layer 204 are stacked between the first base film layer 201 and the second base film layer 202, and a dimming layer 205 is arranged between the first electrode layer 203 and the second electrode layer 204, and the first base film layer 201 is bonded and fixed to the transparent conductive adhesive layer 102.

[0049] In this embodiment, the dimming film 200 adopts a sandwich structure of a first base film layer 201 and a second base film layer 202. The electrode layers are placed on the inner sides of the base films on both sides, and the dimming layer 205 is in the middle, forming a symmetrical and stable sandwich structure, which can effectively balance mechanical stress and protect the electrode layer from external damage; the first base film layer 201 is directly bonded and fixed through the transparent conductive adhesive layer 102, which not only simplifies the complexity of alignment and fixation in the traditional bonding process, but also enhances the interfacial bonding force between the film layers. At the same time, the physical isolation effect of the base film on the electrode and the dimming layer 205 is retained, ensuring the reliability of the coordinated operation of the dimming function and the touch function, and is suitable for vehicle-mounted display scenarios with dynamic bending or complex curves.

[0050] A specific embodiment of the present invention further provides a touch-sensitive dimming glass, including the above-mentioned touch-sensitive dimming film 200 , and also including a first glass layer and a second glass layer, wherein the touch-sensitive dimming film 200 is disposed between the first glass layer and the second glass layer.

[0051] This invention integrates a touch-sensitive dimming film 200 into touch-sensitive dimming glass, achieving a deep fusion of optoelectronic functions with architectural / automotive glass. This integrated design fully leverages the mechanical strength and thermal and sound insulation properties of the glass substrate, ensuring that the dimming film 200 provides physical protection while also addressing building safety and aesthetic requirements. The double-layer glass encapsulation further enhances waterproof and dustproof performance, enabling long-term stable operation in complex environments. Furthermore, the film offers reliability under dynamic bending or temperature fluctuations, ultimately providing users with a smart glass solution that combines privacy adjustment, touch interaction, and decorative features.

[0052] A third object of the present invention is to provide a vehicle comprising touch-controlled dimming glass.

[0053] This invention integrates touch-sensitive dimming glass into vehicles, aiming to achieve a deep functional integration of windows and interiors through its lightweight, highly flexible, and intelligent optoelectronic properties. This design not only dynamically adjusts interior light transparency to optimize driving comfort, but also replaces traditional mechanical switches with a touch-sensitive interface, enhancing human-computer interaction efficiency and enhancing the sense of technology. Furthermore, the structural strength of the glass substrate and multi-layer packaging technology effectively withstand vibration, temperature fluctuations, and environmental corrosion during driving, ensuring long-term reliability. This provides an innovative solution for privacy protection, ambiance creation, and energy conservation in the smart cockpit.

[0054] 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.

[0055] 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.

[0056] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. A touch-sensitive dimming film, characterized in that: include: A touch film (100) comprising an insulating base layer (101) and a touch layer (104); A dimming film (200) comprising a visible area (300) and a non-visible area (301), wherein at least a portion of the surface of the visible area (300) is covered by the touch film (100); and the non-visible area (301) is provided with a control module electrically connected to the touch film (100) and the dimming film (200); A transparent conductive adhesive layer (102) is provided between the dimming film (200) and the insulating base layer (101), and is used for fixedly connecting the touch film (100) and the dimming film (200), and shielding interference signals generated by the dimming film (200) on the touch film (100) when the dimming film (200) is energized.

2. The touch-sensitive dimming film according to claim 1, wherein: The touch layer (104) includes at least three independent and successively arranged touch areas (105), each touch area (105) being electrically connected to the control module; the control module is configured to recognize a linear sliding action of a user's finger continuously sliding across the at least three touch areas (105), and to change the transmittance of the dimming film (200) in response to the above action.

3. The touch-sensitive dimming film according to claim 2, wherein: The control module can detect changes in electrical parameters corresponding to any touch area (105) when a user's finger approaches or touches the touch area (105); when the electrical parameter of a touch area (105) gradually returns to an initial value from exceeding a critical value, and at the same time, the electrical parameter of an adjacent touch area (105) of the touch area (105) gradually changes from an initial value to exceeding a critical value, the control module determines that the user's finger slides from the touch area (105) to the adjacent touch area (105).

4. The touch-sensitive dimming film according to claim 2, wherein: The control module is configured to adjust the change direction and change amplitude of the light transmittance of the dimming film (200) according to the sliding direction of the user's finger on the touch area (105) and the number of touch areas (105) that are continuously slid.

5. The touch-sensitive dimming film according to claim 1, wherein: The touch film (100) further comprises a transparent protective layer (103), and the touch layer (104) is arranged between the transparent protective layer (103) and the insulating base layer (101).

6. The touch-sensitive dimming film according to claim 1, wherein: The material of the touch layer (104) is ITO.

7. The touch-sensitive dimming film according to claim 1, wherein: The total thickness of the touch film (100) and the transparent conductive adhesive layer (102) is less than 50 μm.

8. The touch-sensitive dimming film according to claim 1, wherein: The dimming film (200) comprises a first base film layer (201) and a second base film layer (202); a first electrode layer (203) and a second electrode layer (204) are stacked between the first base film layer (201) and the second base film layer (202); a dimming layer (205) is provided between the first electrode layer (203) and the second electrode layer (204); and the first base film layer (201) is bonded and fixed to the transparent conductive adhesive layer (102).

9. A touch-sensitive dimming glass, characterized in that: The method comprises the touch-sensitive dimming film according to any one of claims 1 to 8, further comprising a first glass layer and a second glass layer, wherein the touch-sensitive dimming film is arranged between the first glass layer and the second glass layer.

10. A vehicle, characterized in that: The invention comprises the touch-sensitive dimming glass as claimed in claim 9.

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