A light control glass
By introducing a protective layer and a dimming layer into the dimming glass, the problem of temperature rise in the dimming glass when it is dark is solved, achieving efficient heat insulation, sound insulation and self-cleaning effects, while providing switching between transparent and fogged states, suitable for smart windows and privacy protection in the fields of architecture and automobiles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN GLORY GLASS CO LTD
- Filing Date
- 2025-10-13
- Publication Date
- 2026-07-14
AI Technical Summary
When dimming glass is in the dark, the dye liquid crystal absorbs light energy, causing it to heat up, which affects the dimming performance and increases the indoor temperature.
The design employs a protective layer and a dimming layer, including a first protective layer, a first isolation layer, a first glass substrate, a first transparent layer, a second transparent layer, a second glass substrate, a second isolation layer, and a second protective layer. Combined with a hydrophobic and anti-fouling coating, a vacuum chamber or an inert gas-filled chamber, and Low-E low-emissivity glass, it enhances thermal insulation, sound insulation, and structural support performance. The driving voltage provided by the transparent conductive layer controls the state switching of the dimming layer.
It effectively prevents dust and stains from adhering, reduces cleaning difficulty, improves the weather resistance and self-cleaning ability of glass, enhances heat insulation, sound insulation and safety performance, reduces heat loss, and enables switching between transparent and frosted states. It is suitable for applications such as smart windows, privacy partitions and car sunroofs.
Smart Images

Figure CN224501113U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of glass technology, specifically to a type of dimming glass. Background Technology
[0002] Currently, smart glass is used in construction, transportation, and other fields. Smart glass can change the light transmittance of a window, thereby changing the window between dark and bright states. However, when the smart glass is in the dark state, the black dye in the dye liquid crystal in the dimming medium layer of the smart glass absorbs the energy in the light, causing the dimming medium layer to heat up, thus affecting the dimming performance. It also generates heat radiation, which raises the indoor temperature. Therefore, we propose a more convenient and practical smart glass to meet the usage needs. Utility Model Content
[0003] The purpose of this invention is to provide a dimming glass to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a dimming glass, comprising a protective layer and a dimming layer disposed therein;
[0005] The protective layer includes a first protective layer, a first isolation layer, a first glass base layer, a first transparent layer, a second transparent layer, a second glass base layer, a second isolation layer, and a second protective layer;
[0006] The dimming layer is disposed between the first transparent layer and the second transparent layer, and includes a first transparent conductive layer, an ion storage layer, an electrochromic layer, an electrolyte layer, and a second transparent conductive layer. The first transparent conductive layer and the second transparent conductive layer are used to connect to an external power source and provide a driving voltage for the dimming layer.
[0007] Furthermore, the first isolation layer and the second isolation layer are either a vacuum cavity or a transparent inert gas-filled cavity, and the outer surfaces of the first protective layer and the second protective layer are also coated with a hydrophobic and anti-fouling coating.
[0008] Furthermore, the first transparent layer and the second transparent layer are composed of either polyvinyl butyral or an ionic polymer film, and the dimming layer is completely encapsulated within them by a hot lamination process.
[0009] Furthermore, the dimming layer also includes a first antioxidant layer and a second antioxidant layer. The first antioxidant layer is disposed on the upper surface of the first transparent conductive layer and is in contact with the first transparent layer. The second antioxidant layer is disposed on the lower surface of the second transparent conductive layer and is in contact with the second transparent layer. The first antioxidant layer and the second antioxidant layer are one of indium tin oxide and aluminum zinc oxide thin films.
[0010] Furthermore, the ion storage layer is a nickel oxide thin film, the electrochromic layer is a tungsten trioxide thin film, and the electrolyte layer is one of a solid polymer electrolyte and an inorganic lithium salt electrolyte.
[0011] Furthermore, at least one of the first and second glass substrates is Low-E low-emissivity glass, and its coated surface is disposed facing the dimming layer.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This smart glass, through the inclusion of protective and dimming layers, features an outermost first and second protective layer coated with a hydrophobic and anti-fouling coating. This effectively prevents the adhesion of contaminants such as dust, water stains, and oil, reducing cleaning difficulty and enhancing the glass's weather resistance and self-cleaning ability. The middle first and second isolation layers are vacuum or inert gas-filled chambers, providing excellent heat insulation, sound insulation, and buffering performance, thus improving the glass's energy efficiency and safety. The inner and outer glass substrates further provide structural support and infrared reflection, reducing heat loss. This smart glass effectively resists adverse environmental factors such as external impacts, scratches, ultraviolet radiation, and moisture erosion, improving the overall mechanical strength and weather resistance of the glass. It is highly practical and suitable for widespread adoption.
[0014] Meanwhile, the dimming layer can switch between transparent and frosted (or colored) states as needed, making it widely applicable to smart windows, privacy partitions, car sunroofs, projection screens and other application scenarios. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the protective layer structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the dimming layer structure of this utility model.
[0018] In the diagram: 1. Protective layer; 101. First protective layer; 102. Second protective layer; 103. First glass substrate; 104. Second glass substrate; 105. First isolation layer; 106. Second isolation layer; 107. First transparent layer; 108. Second transparent layer; 2. Dimming layer; 201. First anti-oxidation layer; 202. Second anti-oxidation layer; 203. First transparent conductive layer; 204. Second transparent conductive layer; 205. Ion storage layer. Detailed Implementation
[0019] 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.
[0020] In the construction process, dimming glass is required. The dimming glass provided by this utility model is specifically designed for use in construction. During handling, it is essential to ensure that the dimming glass is always vertical, avoiding horizontal placement or excessive tilting to prevent damage to the internal structure of the glass due to uneven stress. Before installation, the base layer of the installation site must be strictly inspected to ensure that the flatness error of the base layer is within the specified range; otherwise, it will affect the installation quality and dimming effect of the dimming glass. During installation, the sealant used must be compatible with the material of the dimming glass to prevent the glass performance from deteriorating due to the chemical corrosion of the sealant.
[0021] like Figures 1-3 As shown, this utility model provides a technical solution: a dimming glass, including a protective layer 1 and a dimming layer 2 disposed therein; the protective layer 1 includes a first protective layer 101, a first insulating layer 105, a first glass substrate 103, a first transparent layer 107, a second transparent layer 108, a second glass substrate 104, a second insulating layer 106, and a second protective layer 102; the dimming layer 2 is disposed between the first transparent layer 107 and the second transparent layer 108, and includes a first transparent conductive layer 203, an ion storage layer 205, an electrochromic layer, an electrolyte layer, and a second transparent conductive layer 204; the first transparent conductive layer 203 and the second transparent conductive layer 204 are used to connect to an external power source and provide a driving voltage for the dimming layer 2.
[0022] like Figure 2 As shown, the first isolation layer 105 and the second isolation layer 106 are either a vacuum cavity or a transparent inert gas filling cavity. The outer surfaces of the first protective layer 101 and the second protective layer 102 are also coated with a hydrophobic and anti-fouling coating. The first transparent layer 107 and the second transparent layer 108 are composed of either polyvinyl butyral or an ionic polymer film, and the dimming layer 2 is completely encapsulated inside them by a hot lamination process.
[0023] It should be noted that during use, the outermost layers are the first protective layer 101 and the second protective layer 102, which are coated with a hydrophobic and anti-fouling coating. This effectively prevents the adhesion of contaminants such as dust, water stains, and oil stains, reducing the difficulty of cleaning and improving the weather resistance and self-cleaning ability of the glass. The middle first isolation layer 105 and the second isolation layer 106 are vacuum chambers or inert gas-filled chambers, which have excellent heat insulation, sound insulation and buffering performance, and can improve the energy-saving effect and safety performance of the glass. The inner and outer glass base layers further provide structural support and infrared reflection function to reduce heat loss.
[0024] like Figure 3 As shown, the dimming layer 2 also includes a first antioxidant layer 201 and a second antioxidant layer 202. The first antioxidant layer 201 is disposed on the upper surface of the first transparent conductive layer 203 and is in contact with the first transparent layer 107. The second antioxidant layer 202 is disposed on the lower surface of the second transparent conductive layer 204 and is in contact with the second transparent layer 108. The first antioxidant layer 201 and the second antioxidant layer 202 are one of indium tin oxide and zinc aluminum oxide thin films. The ion storage layer 205 is a nickel oxide thin film. The electrochromic layer is a tungsten trioxide thin film. The electrolyte layer is one of a solid polymer electrolyte and an inorganic lithium salt electrolyte. At least one of the first glass substrate 103 and the second glass substrate 104 is a Low-E low-emissivity glass, and its coated surface faces the dimming layer 2.
[0025] It is important to note that during use, an external power source applies a certain voltage to the dimming layer 2 through two transparent conductive layers. The electrochromic layer (such as tungsten trioxide) undergoes a redox reaction under the influence of the electric field, changing its optical state: when the power is applied, ions (provided by the electrolyte layer, usually lithium ions) are inserted into the electrochromic layer from the ion storage layer 205 through the electrolyte, making its color darker and reducing light transmittance; when the power is off, the ions are released, and the electrochromic layer returns to a transparent state. The dimming layer 2 can switch between transparent and fogged (or colored) states as needed, and is widely applicable to smart windows, privacy partitions, car sunroofs, projection screens and other application scenarios.
[0026] Example 1: High-insulation and energy-saving intelligent dimming window for buildings
[0027] Application scenarios:
[0028] Window systems in high-rise office buildings or residences are used to achieve natural light regulation, indoor privacy protection, and building energy conservation.
[0029] Structural configuration:
[0030] The protective components 1 consist of a first protective layer 101 and a second protective layer 102, made of high-strength float glass with a nano-level hydrophobic and anti-fouling coating, providing self-cleaning and weather-resistant properties; a first isolation layer 105 and a second isolation layer 106, which are argon-filled cavities with a thickness of approximately 12mm, providing excellent heat and sound insulation performance; and a first glass substrate 103 and a second glass substrate 104, both made of 6mm thick float glass, with the second glass substrate 104 being Low-E low-emissivity glass with the coated surface facing the dimming layer 2, effectively reflecting infrared rays and improving heat insulation performance.
[0031] Dimming layer 2: Located between two transparent polyvinyl butyral (PVB) layers 107 and 108, and fully encapsulated by a thermal lamination process; includes: a first transparent conductive layer 203 and a second transparent conductive layer 204 made of ITO conductive film; a first antioxidant layer 201 and a second antioxidant layer 202 both made of indium tin oxide thin film; an electrochromic layer of tungsten trioxide (WO3); an ion storage layer of nickel oxide (NiO); and an electrolyte layer of solid polymer electrolyte; operating voltage: 1–3V DC, with transparency adjusted by an external power supply control system.
[0032] Example 2: High-security and privacy intelligent panoramic sunroof for automobiles
[0033] Application scenarios:
[0034] Intelligent panoramic sunroof systems in high-end passenger cars or new energy vehicles are used to achieve light adjustment, in-vehicle privacy protection, and sun protection and heat insulation.
[0035] Structural configuration:
[0036] Protective Component 1: First protective layer 101 and second protective layer 102: Made of laminated tempered glass with a total thickness of approximately 8mm. The outer surface is coated with a hydrophobic and anti-fouling coating to improve rainwater sliding and dust prevention capabilities. First isolation layer 105 and second isolation layer 106: Vacuum cavity structure with a thickness of approximately 6mm, effectively blocking external noise and heat conduction to improve ride comfort. First glass base layer 103 and second glass base layer 104: Both are laminated safety glass with high impact resistance and explosion-proof performance to ensure vehicle driving safety.
[0037] Dimming layer 2: disposed between two ionic polymer transparent films 107 and 108, and sealed and fixed by hot pressing process; including: the first transparent conductive layer 203 and the second transparent conductive layer 204 are made of AZO transparent conductive film, the antioxidant layer is zinc oxide aluminum film, the electrochromic layer is tungsten trioxide, the ion storage layer is nickel oxide, and the electrolyte layer is inorganic lithium salt electrolyte.
[0038] Operating method: The sunroof glass can be switched from transparent to dark by adjusting the voltage through the in-vehicle central control system or buttons. Users can control the amount of light entering and privacy protection with one button.
[0039] 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 embodiments and their equivalents.
Claims
1. A type of dimming glass, characterized in that: It includes a protective layer (1) and a dimming layer (2) disposed therein; The protective layer (1) includes a first protective layer (101), a first isolation layer (105), a first glass base layer (103), a first transparent layer (107), a second transparent layer (108), a second glass base layer (104), a second isolation layer (106), and a second protective layer (102); The dimming layer (2) is disposed between the first transparent layer (107) and the second transparent layer (108), and includes a first transparent conductive layer (203), an ion storage layer (205), an electrochromic layer, an electrolyte layer, and a second transparent conductive layer (204). The first transparent conductive layer (203) and the second transparent conductive layer (204) are used to connect to an external power supply and provide a driving voltage for the dimming layer (2).
2. The dimming glass according to claim 1, characterized in that: The first isolation layer (105) and the second isolation layer (106) are either a vacuum cavity or a transparent inert gas filling cavity. The outer surfaces of the first protective layer (101) and the second protective layer (102) are also coated with a hydrophobic and antifouling coating.
3. The dimming glass according to claim 1, characterized in that: The first transparent layer (107) and the second transparent layer (108) are composed of either polyvinyl butyral or an ionic polymer film, and the dimming layer (2) is completely encapsulated inside them by a hot lamination process.
4. A dimming glass according to claim 1, characterized in that: The dimming layer (2) further includes a first antioxidant layer (201) and a second antioxidant layer (202). The first antioxidant layer (201) is disposed on the upper surface of the first transparent conductive layer (203) and is in contact with the first transparent layer (107). The second antioxidant layer (202) is disposed on the lower surface of the second transparent conductive layer (204) and is in contact with the second transparent layer (108). The first antioxidant layer (201) and the second antioxidant layer (202) are one of indium tin oxide and aluminum zinc oxide thin films.
5. A dimming glass according to claim 1, characterized in that: The ion storage layer (205) is a nickel oxide thin film, the electrochromic layer is a tungsten trioxide thin film, and the electrolyte layer is one of a solid polymer electrolyte and an inorganic lithium salt electrolyte.
6. A dimming glass according to claim 1, characterized in that: At least one of the first glass substrate (103) and the second glass substrate (104) is Low-E low-emissivity glass, and its coated surface is disposed facing the dimming layer (2).