Stepless dimming glass

By overlapping the electrochromic film and the capacitive touch sensor layer with equal areas in the stepless dimming glass and using a transparent metal mesh substrate design, the problem of the inability of existing electrochromic dimming glass to be operated locally is solved, achieving a simple and beautiful product form and a hidden wiring effect.

CN224163880UActive Publication Date: 2026-04-24MICRON OPTOELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
MICRON OPTOELECTRONICS CO LTD
Filing Date
2025-06-27
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

Existing electroluminescent glass cannot achieve local direct touch operation, resulting in increased overall thickness, complex assembly, and a visually disjointed appearance. The mismatch between the sensor and the color-changing film sizes causes visual color difference, which cannot meet the hidden wiring requirements of automotive scenarios.

Method used

It adopts an infinitely dimming glass structure, with the electrochromic film and the capacitive touch sensor layer having equal and completely overlapping areas. Through a transparent metal mesh substrate design, combined with a PVB adhesive layer, it is permanently pressed between the two glass substrates. The electrode leads are hidden parallel to the glass edge, and the integrated power module is a USB interface.

Benefits of technology

It achieves a simple and beautiful product form, eliminates visual disjointedness, meets the requirements for hidden wiring in automotive interiors, and improves durability and overall aesthetics.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses stepless dimming glass which comprises a first glass substrate, a first adhesive layer, an electrochromic film, a second adhesive layer, a capacitive touch sensor layer, a third adhesive layer, a second glass substrate and a power supply module which are sequentially laminated and bonded, the capacitive touch sensor layer and the electrochromic film have the same area and are completely overlapped, and an electrode lead is arranged at one end of the electrochromic film; a touch control area with silk-screen marks is arranged on the surface of the capacitive touch sensor layer, a non-control area of the capacitive touch sensor layer is covered with a grounding layer, and an FPC lead is arranged at one end of the capacitive touch sensor layer; the electrochromic film, the capacitive touch sensor layer and all the adhesive layers are permanently laminated between the double glass substrates to form a single solid component, so that an external hanging structure, an assembly gap and visual split feeling caused by an independent touch panel in the traditional scheme are eliminated, and the product form is more concise and attractive.
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Description

Technical Field

[0001] This utility model relates to the technical field of dimming glass, specifically stepless dimming glass. Background Technology

[0002] Existing electroluminescent glass typically employs a five-layer structure: glass-adhesive layer-color-changing film-adhesive layer-glass. Its functionality relies on external physical switches or mobile apps, making direct touch operation impossible. Integrating touch functionality usually requires an external, separate touch panel, increasing overall thickness, complicating assembly, and creating a visual disconnect between the external panel and the glass.

[0003] The physical separation of the touch function from the dimming glass disrupts the product's integrated form; the mismatch in size between the sensor and the color-changing film causes visual color difference; and the messy arrangement of the lead wires fails to meet the hidden wiring requirements of automotive applications. Utility Model Content

[0004] The purpose of this invention is to provide stepless dimming glass to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: stepless dimming glass, comprising a first glass substrate, a first adhesive layer, an electrochromic film, a second adhesive layer, a capacitive touch sensor layer, a third adhesive layer, a second glass substrate, and a power module, which are sequentially stacked and bonded together.

[0006] The capacitive touch sensor layer and the electrochromic film have the same area and completely overlap, and one end of the electrochromic film is provided with an electrode lead.

[0007] The surface of the capacitive touch sensor layer is provided with a touch control area marked with silkscreen, including a switch area, a mode selection area and a linear sliding area. The non-control area of ​​the capacitive touch sensor layer is covered with a ground layer. One end of the capacitive touch sensor layer is provided with an FPC lead. The FPC lead is led out from the side of the glass and the direction of the lead is parallel to the electrode lead of the electrochromic film and located on the same side edge of the glass.

[0008] Preferably, the electrodes of the electrochromic film are divided into multiple independent conductive channels, each channel is arranged in a strip shape and is linked to the mode selection area of ​​the touch control area, and an insulating groove is provided between adjacent channels.

[0009] Preferably, the FPC leads and electrode leads are integrated on the bottom edge of the glass and connected together to an external power module, the input of which is a USB interface.

[0010] Preferably, the edge of the interface between the second glass substrate and the capacitive touch sensor layer is provided with an annular waterproof groove, and the interior of the annular waterproof groove is filled with a sealant.

[0011] Preferably, the capacitive touch sensor layer uses a transparent metal mesh substrate.

[0012] Preferably, the first adhesive layer, the second adhesive layer, and the third adhesive layer are all PVB films.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model permanently presses the electrochromic film, the capacitive touch sensor layer, and all adhesive layers between two glass substrates to form a single solid component, eliminating the external structure, assembly gaps, and visual disjointedness caused by the independent touch panel in traditional solutions, making the product form more concise, beautiful, and integrated.

[0015] 2. This utility model uses a transparent metal mesh substrate as the touch sensor layer, and ensures that its area is equal to and completely overlaps with the electrochromic film in the design. At the same time, the stacking optimization process is carried out so that the metal mesh has almost no color difference visible to the naked eye after the color-changing film. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the stepless dimming glass stacked structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the surface structure of the capacitive touch sensor layer of this utility model.

[0018] Figure 3 This is a schematic diagram of the circuit distribution of the electrochromic film of this utility model.

[0019] Figure 4 This is a schematic diagram of the structure between the second glass substrate and the capacitive touch sensor layer of this utility model.

[0020] In the figure: First glass substrate 1; First adhesive layer 2; Electrochromic film 3; Electrode lead 31; Insulating trench 32; Second adhesive layer 4; Capacitive touch sensor layer 5; Touch control area 51; Ground layer 52; FPC lead 53; Third adhesive layer 6; Second glass substrate 7; Annular waterproof groove 71; Sealant 72; Power module 8. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1 to 4 This utility model provides a technical solution: stepless dimming glass, comprising a first glass substrate 1, a first adhesive layer 2, an electrochromic film 3, a second adhesive layer 4, a capacitive touch sensor layer 5, a third adhesive layer 6, a second glass substrate 7, and a power module 8, which are sequentially stacked and bonded together.

[0023] The capacitive touch sensor layer 5 uses a transparent metal mesh substrate. The first adhesive layer 2, the second adhesive layer 4, and the third adhesive layer 6 are all PVB films. The color-changing film 3 and the sensor layer 5 are permanently pressed between the two glass substrates through the three sets of PVB adhesive layers to form a single solid component, eliminating the assembly gap and structural redundancy caused by the external touch panel.

[0024] The capacitive touch sensor layer 5 and the electrochromic film 3 have the same area and completely overlap. One end of the electrochromic film 3 has an electrode lead 31. The ground layer 52 makes the potential of the non-operating area zero to avoid interference from the capacitive signal. There is no visible color difference after the metal mesh and the color-changing film are stacked.

[0025] The electrodes of the electrochromic film 3 are divided into multiple independent conductive channels. Each channel is arranged in a strip and is linked to the mode selection area of ​​the touch control area 51. An insulating groove 32 is provided between adjacent channels. The strip channels realize louver-style zoned dimming. The insulating groove 32 prevents short circuits between channels. The bottom unidirectional lead wires make the wire harness concentrated and hidden in the window frame or desktop interlayer, meeting the requirement of no exposed wiring in the automotive interior.

[0026] The surface of the capacitive touch sensor layer 5 is provided with a touch control area 51 with silkscreen markings, including a switch area, a mode selection area and a linear sliding area. The non-control area of ​​the capacitive touch sensor layer 5 is covered with a ground layer 52. The linear sliding area is marked with arrow directions. The metal grid is hollowed out in the silkscreen area to avoid the grid lines from obscuring the operation markings. When the user slides along the arrow direction, the light transmittance changes continuously and gradually. The distance the finger moves is linearly related to the light transmittance, realizing stepless adjustment of mechanical operation.

[0027] One end of the capacitive touch sensor layer 5 is provided with an FPC lead 53. The FPC lead 53 is led out from the side of the glass, and the direction of the lead is parallel to the electrode lead 31 of the electrochromic film 3, located on the same side edge of the glass.

[0028] FPC lead 53 and electrode lead 31 are integrated on the bottom edge of the glass and are connected together to the external power module 8, the input of which is a USB interface.

[0029] An annular waterproof groove 71 is provided at the edge of the bonding surface between the second glass substrate 7 and the capacitive touch sensor layer 5. The interior of the annular waterproof groove 71 is filled with sealant 72 to block water vapor from penetrating along the interlayer gaps, prevent the metal mesh electrode from oxidizing and failing, and improve the durability of the car in high humidity environment.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stepless dimming glass, characterized in that: It includes a first glass substrate (1), a first adhesive layer (2), an electrochromic film (3), a second adhesive layer (4), a capacitive touch sensor layer (5), a third adhesive layer (6), a second glass substrate (7), and a power module (8) that are sequentially stacked and bonded together. The capacitive touch sensor layer (5) and the electrochromic film (3) have the same area and completely overlap. One end of the electrochromic film (3) is provided with an electrode lead (31). The surface of the capacitive touch sensor layer (5) is provided with a touch control area (51) marked with silkscreen, including a switch area, a mode selection area and a linear sliding area. The non-control area of ​​the capacitive touch sensor layer (5) is covered with a ground layer (52). One end of the capacitive touch sensor layer (5) is provided with an FPC lead (53). The FPC lead (53) is led out from the side of the glass and the direction of the lead is parallel to the electrode lead (31) of the electrochromic film (3) and located on the same side edge of the glass.

2. The stepless dimming glass according to claim 1, characterized in that: The electrodes of the electrochromic film (3) are divided into multiple independent conductive channels. Each channel is arranged in a strip shape and is linked to the mode selection area of ​​the touch control area (51). An insulating trench (32) is provided between adjacent channels.

3. The stepless dimming glass according to claim 1, characterized in that: The FPC lead (53) and electrode lead (31) are integrated at the bottom edge of the glass and are connected together to the external power module (8). The input end of the power module (8) is a USB interface.

4. The stepless dimming glass according to claim 1, characterized in that: The second glass substrate (7) and the capacitive touch sensor layer (5) have an annular waterproof groove (71) at the edge of their bonding surface, and the interior of the annular waterproof groove (71) is filled with a sealant (72).

5. The stepless dimming glass according to claim 1, characterized in that: The capacitive touch sensor layer (5) uses a transparent metal mesh substrate.

6. The stepless dimming glass according to claim 1, characterized in that: The first adhesive layer (2), the second adhesive layer (4) and the third adhesive layer (6) are all PVB film.