A dimming glass, a curtain and a car
By incorporating a padding material in the dimming glass with heat and pressure resistance properties close to or better than those of the liquid crystal dimming layer, the problem of uneven thickness of the liquid crystal dimming layer was solved, thereby improving product yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHUHAI WICUE TECH CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-07-31
AI Technical Summary
The uneven thickness of the liquid crystal dimming layer in existing dimming glass affects product yield.
Before the dimming glass is formed, a pad with a thickness greater than or equal to that of the liquid crystal dimming layer is prepared. The pad material is selected to have heat and pressure resistance properties close to or better than those of the liquid crystal dimming layer, such as modified PVB, PC, PET or TPU materials, to ensure that the thickness of the pad is equal to that of the liquid crystal dimming layer after high temperature and high pressure bonding.
By ensuring a uniform thickness of the liquid crystal dimming layer, product yield was improved.
Smart Images
Figure CN224581789U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of smart glass technology, and in particular to a smart glass, a skylight, and an automobile. Background Technology
[0002] Smart glass is a product made by bonding a liquid crystal dimming layer between two layers of glass under high temperature and pressure. Because it can quickly switch between a transparent and a frosted state, it is widely used in automotive windows, building curtain walls, and other applications.
[0003] The manufactured dimming glass comprises a first glass layer, a first interlayer, a liquid crystal dimming layer, a second interlayer, and a second glass layer, sequentially arranged. When the control power is turned on, the liquid crystal molecules in the liquid crystal dimming layer are deflected in an orderly manner due to the electric field, resulting in a uniform refractive index of the dimming glass for incident light, and a visually transparent state. When the control power is turned off, the liquid crystal molecules in the liquid crystal dimming layer are arranged irregularly, resulting in an uneven refractive index of the dimming glass for incident light, and a visually hazy state.
[0004] However, in practice, during lamination, the flexible liquid crystal dimming layer is smaller than the glass layer, resulting in a hollow area around the entire interlayer. For this area, existing technologies typically use PVB material of the same height as the liquid crystal dimming layer as an auxiliary pad, or use nothing at all. Because conventional PVB material has lower heat and pressure resistance than the liquid crystal dimming layer, the thickness of the PVB auxiliary pad will be less than the thickness of the liquid crystal dimming layer after high-temperature, high-pressure bonding.
[0005] This can easily lead to uneven thickness of the liquid crystal dimming layer, resulting in liquid crystal accumulation and affecting product yield. Utility Model Content
[0006] The main purpose of this invention is to propose a dimming glass that aims to solve the problem of uneven thickness of the liquid crystal dimming layer in existing dimming glass, which affects product yield.
[0007] To achieve the above objectives, this utility model proposes a dimming glass, comprising a first glass layer, a first laminated layer, a liquid crystal dimming layer, a second laminated layer, and a second glass layer arranged sequentially. Furthermore, the dimming glass also includes a spacer, which is located between the first laminated layer and the second laminated layer, surrounding the liquid crystal dimming layer. Before the dimming glass is formed, the thickness of the spacer is greater than or equal to the thickness of the liquid crystal dimming layer; after the dimming glass is formed, the thickness of the spacer is equal to the thickness of the liquid crystal dimming layer.
[0008] Preferably, the padding edge comprises PVB material, and before the dimming glass is formed, the thickness of the padding edge is greater than the thickness of the liquid crystal dimming layer.
[0009] Preferably, the thickness of the liquid crystal dimming layer is [0.2mm, 0.5mm), and the thickness of the pad is (0.2mm, 0.5mm).
[0010] Preferably, the thickness of the liquid crystal dimming layer is 0.376 mm, and the thickness of the pad is [0.42 mm, 0.45 mm].
[0011] Preferably, the padding material comprises a modified PVB material, the softening temperature of which is close to the softening temperature of the liquid crystal dimming layer, and the thickness of the padding material is equal to the thickness of the liquid crystal dimming layer before the dimming glass is prepared.
[0012] Preferably, the padding material includes any one of PC material, PET material or TPU material, and before the dimming glass is formed, the thickness of the padding material is equal to the thickness of the liquid crystal dimming layer.
[0013] This utility model also proposes a canopy, including the dimming glass described above.
[0014] This utility model also proposes an automobile, including the dimming glass described above.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0016] This solution involves configuring a pad with a thickness greater than or equal to the thickness of the liquid crystal dimming layer before the dimming glass is fabricated. After the dimming glass is fabricated, the thickness of the pad is equal to the thickness of the liquid crystal dimming layer. This ensures a more uniform thickness of the liquid crystal dimming layer compared to existing technologies, thus improving product yield. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the dimming glass of this utility model. Detailed Implementation
[0018] The solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.
[0019] This invention proposes a dimming glass. Please refer to [link / reference]. Figure 1 In one embodiment, the dimming glass includes a first glass layer 100, a first laminated layer 200, a liquid crystal dimming layer 300, a second laminated layer 400, and a second glass layer 500 disposed sequentially.
[0020] Here, the structure and shape of the first glass layer 100, the first laminated layer 200, the liquid crystal dimming layer 300, the second laminated layer 400, and the second glass layer 500 can be set according to the application scenario of the dimming glass, and no specific restrictions are imposed here. For example, the first glass layer 100, the first laminated layer 200, the liquid crystal dimming layer 300, the second laminated layer 400, and the second glass layer 500 can all be parallel curved surface structures; or the first glass layer 100, the first laminated layer 200, the liquid crystal dimming layer 300, the second laminated layer 400, and the second glass layer 500 can all be rectangular; or, if the dimming glass is used in a car window, the first glass layer 100, the first laminated layer 200, the liquid crystal dimming layer 300, the second laminated layer 400, and the second glass layer 500 can all be irregular shapes set according to the shape of the car window.
[0021] To increase the strength of the smart glass, the first glass layer 100 and / or the second glass layer 500 may be tempered glass. The first interlayer 200 and / or the second interlayer 400 may be PVB (Polyvinyl Butyral) interlayer, EVA (ethylene-vinylacetate copolymer) interlayer, or TPU (Thermoplastic Urethane) interlayer, etc., and no specific limitation is made on the interlayer material here. The liquid crystal dimming layer 300 includes a first conductive layer (not shown), a polymer-dispersed liquid crystal layer (not shown), and a second conductive layer (not shown) arranged sequentially.
[0022] In addition, to make the thickness of the liquid crystal dimming layer 300 more uniform, in this embodiment, the dimming glass also includes a pad 600, which is located between the first laminated layer 200 and the second laminated layer 400 and surrounds the liquid crystal dimming layer 300.
[0023] Before the dimming glass is formed, the thickness of the pad 600 is greater than or equal to the thickness of the liquid crystal dimming layer 300; after the dimming glass is formed, the thickness of the pad 600 is equal to the thickness of the liquid crystal dimming layer 300.
[0024] In one specific embodiment, the pad 600 comprises PVB material, and the thickness of the pad 600 is greater than the thickness of the liquid crystal dimming layer 300 before the dimming glass is prepared.
[0025] Understandably, because the heat and pressure resistance of ordinary PVB material is inferior to that of the liquid crystal dimming layer 300, when the padding 600 and the liquid crystal dimming layer 300 are originally of the same thickness, the thickness of the padding 600 is easily less than that of the liquid crystal dimming layer 300 after high-temperature and high-pressure bonding. However, in this embodiment, the thickness of the padding 600 is configured to be greater than that of the liquid crystal dimming layer 300 before the dimming glass is formed. Thus, after high-temperature and high-pressure bonding, the thickness of the padding 600 can be equal to that of the liquid crystal dimming layer 300, thereby ensuring uniform thickness of the liquid crystal dimming layer 300 and improving product yield.
[0026] It should be noted that, when implementing this solution, the thickness of the edge pad 600 and the liquid crystal dimming layer 300 can be set according to the application scenario of the dimming glass. For example, when the dimming glass is used in outdoor scenarios with high light intensity, the thickness of the edge pad 600 and the liquid crystal dimming layer 300 can be appropriately increased. Preferably, the thickness of the edge pad 600 is (0.2mm, 0.5mm], and the thickness of the liquid crystal dimming layer 300 is [0.2mm, 0.5mm]. In a specific embodiment, the thickness of the liquid crystal dimming layer 300 is 0.376mm, and the thickness of the edge pad 600 is [0.42mm, 0.45mm].
[0027] In another specific embodiment, the pad 600 includes a modified PVB material whose softening temperature is close to that of the liquid crystal dimming layer 300. Before the dimming glass is prepared, the thickness of the pad 600 is equal to the thickness of the liquid crystal dimming layer 300.
[0028] It is understandable that, since the heat and pressure resistance of the modified PVB material configured in this embodiment is similar to that of the liquid crystal dimming layer 300, the thickness of the pad 600 and the liquid crystal dimming layer 300, which were originally of the same thickness, can remain the same after high-temperature and high-pressure bonding. This ensures a uniform thickness of the liquid crystal dimming layer 300, thereby improving product yield.
[0029] In another specific embodiment, the pad 600 includes any one of PC (Polycarbonate), PET (polyethylene terephthalate), or TPU (Thermoplastic Urethane) material. Before the dimming glass is prepared and formed, the thickness of the pad 600 is equal to the thickness of the liquid crystal dimming layer 300.
[0030] It is understandable that, since the heat and pressure resistance of the PC, PET, or TPU materials configured in this embodiment is similar to that of the liquid crystal dimming layer 300, the thickness of the pad 600 can remain the same as that of the liquid crystal dimming layer 300 after high-temperature and high-pressure bonding, even though the pad 600 and the liquid crystal dimming layer 300 were originally of the same thickness. This ensures a uniform thickness of the liquid crystal dimming layer 300, thereby improving product yield.
[0031] It is worth mentioning that the thickness of the aforementioned pad 600 is equal to the thickness of the liquid crystal dimming layer 300, with a tolerance of ±10%. For example, if the thickness of the pad 600 is 95% of the thickness of the liquid crystal dimming layer 300, the two thicknesses can be considered to be the same.
[0032] Based on the same inventive concept, this utility model also provides a canopy, including the dimming glass in the above embodiments. Since the principle by which this canopy solves the problem is similar to that of the aforementioned dimming glass, its implementation can refer to the implementation of the aforementioned dimming glass, and repeated details will not be elaborated upon. Other essential components of this canopy are understood by those skilled in the art and will not be described further here, nor should they be construed as limiting this disclosure. This canopy can be applied to transportation facilities such as automobiles and trains, as well as to outdoor tents and intelligent building windows.
[0033] Furthermore, based on the same inventive concept, this utility model also provides an automobile, including the dimming glass described in the above embodiments. Since the principle by which this automobile solves the problem is similar to that of the aforementioned dimming glass, the implementation of this automobile can refer to the implementation of the aforementioned dimming glass, and repeated details will not be elaborated upon. Other essential components of this automobile are those that should be understood by those skilled in the art, and will not be described further here, nor should they be construed as limitations on this disclosure. This automobile includes, but is not limited to, gasoline-powered vehicles, internal combustion engine vehicles, pure electric vehicles, hybrid electric vehicles, range-extended electric vehicles, and other civilian and commercial vehicles, as well as engineering vehicles such as excavators and bulldozers.
[0034] It should be noted that the technical solutions of the various embodiments of this utility model can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0035] The above description is only a part or preferred embodiment of this utility model. Neither the text nor the drawings should limit the scope of protection of this utility model. All equivalent structural transformations made using the content of this utility model specification and drawings under the overall concept of this utility model, or direct / indirect applications in other related technical fields, are included within the scope of protection of this utility model.
Claims
1. A dimming glass, comprising a first glass layer, a first laminated layer, a liquid crystal dimming layer, a second laminated layer, and a second glass layer disposed sequentially, characterized in that, The dimming glass also includes a padding edge, which is located between the first laminated layer and the second laminated layer and surrounds the liquid crystal dimming layer; Before the dimming glass is formed, the thickness of the pad is greater than or equal to the thickness of the liquid crystal dimming layer; After the dimming glass is formed, the thickness of the pad edge is equal to the thickness of the liquid crystal dimming layer.
2. The dimming glass as described in claim 1, characterized in that, The padding material comprises PVB material, and before the dimming glass is formed, the thickness of the padding material is greater than the thickness of the liquid crystal dimming layer.
3. The dimming glass as described in claim 2, characterized in that, The thickness of the liquid crystal dimming layer is [0.2mm, 0.5mm), and the thickness of the pad is [0.2mm, 0.5mm].
4. The dimming glass as described in claim 3, characterized in that, The thickness of the liquid crystal dimming layer is 0.376 mm, and the thickness of the pad is [0.42 mm, 0.45 mm].
5. The dimming glass as described in claim 1, characterized in that, The padding material comprises a modified PVB material, the softening temperature of which is close to the softening temperature of the liquid crystal dimming layer. Before the dimming glass is prepared, the thickness of the padding material is equal to the thickness of the liquid crystal dimming layer.
6. The dimming glass as described in claim 1, characterized in that, The padding material includes any one of PC material, PET material or TPU material, and before the dimming glass is formed, the thickness of the padding material is equal to the thickness of the liquid crystal dimming layer.
7. A kind of canopy, characterized in that, Including the dimming glass as described in any one of claims 1-6.
8. A car, characterized in that, Including the dimming glass as described in any one of claims 1-6.