Photochromic glass, door assembly and vehicle

Abstract

The present invention discloses a light-control glass, door assembly, and vehicle, comprising two glass panes (1), at least one light-control film (3) having a plurality of edge portions (31), at least two adhesive layers (2) interposed between the two glass panes and having a light-transmitting portion (22) and at least one light-blocking portion (23) connected to each other, with the light-control film interposed between the two light-transmitting portions, and a protective layer (4) joined to the plurality of edge portions of the light-control film and interposed between the two adhesive layers, wherein at least one edge portion of the light-control film is a visible edge portion (311), and the joint between the visible edge portion and the protective layer is interposed between the light-blocking portions of the two adhesive layers. This invention effectively prevents a shortening of the service life of the light-control film due to deterioration of the edge portions, and the light-blocking portion can shield the joint between the visible edge portion of the light-control film and the protective layer.

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims priority to a Chinese patent application bearing patent application number 202210866651.3, filed on July 22, 2022, and entitled "Dimming Glass, Door Assembly and Vehicle."

[0002] The present invention relates to the field of glass technology, and in particular to photochromic glass, door assemblies and vehicles. [Background technology]

[0003] Light-controlling glass is a light-controlling product formed by thermocompressing a light-controlling film and two sheets of glass between them, where the light-controlling film performs the light-controlling function and the sheet layer performs the adhesive function. By controlling the applied electric field, the light-controlling film can be rapidly transformed from colorless transparent or colored transparent to various opaque states, thereby controlling the amount of light transmittance. With existing light-controlling glass, the edges of the light-controlling film are exposed, making it prone to deterioration and shortening its service life. Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a light-controlling glass, a door assembly, and a vehicle that can solve the problem that the edge portion of the light-controlling film of the existing light-controlling glass is exposed, making it susceptible to deterioration and shortening its service life. [Means for solving the problem]

[0005] The above object of the present invention can be achieved by the following technical solutions.

[0006] The present invention provides a light-control glass comprising two glass plates, at least one light-control film having a plurality of edge portions, and a light-transmitting portion and at least one light-blocking portion interposed between the two glass plates and connected to each other, wherein the light-control film comprises at least two adhesive layers interposed between the two light-transmitting portions, and a protective layer joined to the plurality of edge portions of the light-control film and interposed between the two adhesive layers, wherein at least one edge portion of the light-control film is a visible edge portion, and the point where the visible edge portion and the protective layer are joined is interposed between the light-blocking portions of the two adhesive layers.

[0007] The present invention further provides a door assembly including the above-mentioned light-controlling glass, wherein the light-controlling glass is assembled on a door body, the two glass sheets are an outer layer glass sheet and an inner layer glass sheet, respectively, the outer layer glass sheet being installed facing the exterior of the vehicle, and the inner layer glass sheet being installed facing the interior of the vehicle.

[0008] The present invention further provides a vehicle including the above-described light control glass. [Effects of the Invention]

[0009] The present invention has at least the following features and advantages over existing technologies.

[0010] According to the light-controlling glass of the present invention, the protective layer is installed so as to connect to the edge of the light-controlling film and is interposed between two adhesive layers, thereby protecting the edge of the light-controlling film and effectively preventing a shortening of the service life due to deterioration of the edge of the light-controlling film. In addition, because the optical properties of the protective layer and the light-controlling film are different, a bright line appears at the position where the protective layer and the edge are joined. Therefore, by installing a shading part on the adhesive layer in this application, the shading part can shield the position where the visible edge of the light-controlling film and the protective layer are joined, thereby preventing the bright line at the joint where the visible edge and the protective layer are joined from affecting the visual experience when looking at the light-controlling glass.

[0011] In order to clearly explain the technical solutions of the embodiments of the present invention, the drawings necessary for explaining the embodiments will be briefly described below. However, it goes without saying that the drawings described below are only a part of the embodiments of the present application, and those skilled in the art can derive other drawings from these drawings without requiring any creative acts. [Brief explanation of the drawings]

[0012] [Figure 1] Cross-sectional view of the light-controlling glass of the present invention [Figure 2] Plan view of the light-controlling glass of the present invention [Figure 3] 2 is a cross-sectional view of a light-control glass according to a second embodiment of the present invention. [Figure 4] 3 is a cross-sectional view of a light-control glass according to a third embodiment of the present invention. [Figure 5] Plan view of the light-control glass according to this embodiment of the present invention [Figure 6] 4 is a plan view of a light-controlling glass according to a fourth embodiment of the present invention; [Figure 7] 5 is a plan view of a light-control glass according to a fifth embodiment of the present invention. [Figure 8] 6 is a plan view of a light-controlling glass according to a sixth embodiment of the present invention. [Figure 9] 7 is a plan view of a light-control glass according to a seventh embodiment of the present invention. [Figure 10] 10 is a plan view of a light-control glass according to an eighth embodiment of the present invention. [Figure 11] 9 is a plan view of a light-control glass according to a ninth embodiment of the present invention. [Figure 12] 10. A plan view of a light-control glass according to a tenth embodiment of the present invention. [Figure 13] 11. A plan view of a light-controlling glass according to an eleventh embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0013] The following will clearly and completely describe the technical solutions of the embodiments of the present invention in combination with the drawings in the embodiments of the present invention, but it goes without saying that the embodiments described here are only a part, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, other embodiments that can be obtained by those skilled in the art without requiring creative acts are all included in the protection scope of the present invention.

[0014] (Embodiment 1) As shown in Figures 1 and 2, the present invention provides a light control glass, which includes two glass plates 1, at least one light control film 3 having a plurality of edge portions 31, and a light-transmitting portion 22 and at least one light-shielding portion 23 interposed between the two glass plates 1 and connected to each other, and the light control film 3 includes at least two adhesive layers 2 interposed between the light-transmitting portions 22 of the two adhesive layers 2, and a protective layer 4 connected to the plurality of edge portions 31 of the light control film 3 and disposed between the two adhesive layers 2, and at least one edge portion 31 of the light control film 3 is a visible edge portion 311, and the location where the visible edge portion 311 and the protective layer 4 are joined is between the light-shielding portions 23 of the two adhesive layers 2.

[0015] According to the light-controlling glass of the present invention, the protective layer 4 is installed so as to connect to the edge portion 31 of the light-controlling film 3 and is interposed between the two adhesive layers 2, thereby protecting the edge portion 31 of the light-controlling film 3 and effectively preventing a shortening of the service life due to deterioration of the edge portion 31 of the light-controlling film 3. In addition, because the optical properties of the protective layer 4 and the light-controlling film 3 are different, a bright line at the seam appears at the position where the protective layer 4 and the edge portion 31 are joined. Therefore, by installing the shading portion 23 on the adhesive layer 2 in the present application, the shading portion 23 can shield the position where the visible edge portion 311 of the light-controlling film 3 and the protective layer 4 are joined, thereby preventing the bright line at the seam where the visible edge portion 311 and the protective layer 4 are joined from affecting the visual experience when looking at the light-controlling glass.

[0016] Specifically, the visible edge portion 311 is the edge portion 31 that is visible when the light-control glass is in use. As shown in FIG. 2, the light-control film 3 is connected to an external power source via two electrodes 6 to form an applied electric field and adjust the amount of light transmittance of the light-control film 3. As shown in FIG. 1, the distance L between the connection point between the light-control portion 23 and the light-transmitting portion 22 and the connection point between the visible edge portion 311 and the protective layer 4 is 3 mm or more so that the light-blocking portion 23 completely blocks the bright lines at the seam where the visible edge portion 311 and the protective layer 4 are joined. As shown in FIGS. 2 and 13, the shape of the light-blocking portion 23 is not specifically limited as long as it can block the connection point between the visible edge portion 311 and the protective layer 4. The shape of the light-control film 3 is also not specifically limited as long as it can be similar to or different from the shape of the two glass plates 1, as long as it covers the visible area when the light-control glass is in use. Similarly, the shape of the protective layer 4 is not specifically limited, and it may be the same as or different from the edge portions of the two glass plates 1, as long as it can surround the light control film 3. For example, the light control film 3 can be surrounded by a plurality of separated strip structures, or the light control film 3 can be surrounded by an integrated spiral structure.

[0017] In this embodiment, the light control film 3 is a PDLC light control film or an SPD light control film, and one light control film 3 is adhered to two glass plates 1 by two adhesive layers 2 to form an integrated unit. The light control film may be an LC light control film, and two light control films may be adhered and fixed by one adhesive layer, and then adhered to two glass plates by two other adhesive layers to form an integrated unit. Other types of light control films in existing technology may also be used.

[0018] As shown in Figures 1, 2 and 3, in this embodiment of the present invention, the adhesive layer 2 is a first sheet material 21, which has a transparent region and a color region, with the transparent region constituting the light-transmitting portion 22 and the color region constituting the light-shielding portion 23. The material of the first sheet material 21 is polyvinyl butyral (PVB), which has excellent adhesion to the glass plate 1, and the transparent region of the first sheet material 21 has excellent optical transparency. Specifically, the first sheet material 21 is integrally molded by an extrusion process. The thickness of the first sheet material 21 is 0.38mm to 0.76mm.

[0019] Adhesive layer materials include, but are not limited to, polycarbonate (PC), sound-insulating PVB, light-shielding tape PVB, thermal control PVB, ethylene vinyl acetate (EVA), thermoplastic polyurethane (TPU), polyacetal resin (POM), polybutylene terephthalate (PBT), polyethylene vinyl acetate (PET), polyethylene naphthalate (PEN), polyvinyl chloride (PVC), polyvinyl fluoride (PVF), polyacrylate (PA), polymethyl methacrylate (PMMA), and polyurethane foam (PUR). The adhesive layer may be formed by joining a transparent PVB sheet material with a colored PVB sheet material or other light-shielding sheet structure. The transparent portion may be formed by the transparent PVB sheet material, and the light-shielding portion may be formed by the colored PVB sheet material or other light-shielding sheet structure. The light-transmitting portion may also be formed by other optically transparent and viscous materials.

[0020] As shown in FIG. 1 , in this embodiment, the protective layer 4 is a second sheet material 41, which can be transparent or colored. The glass plate 1, the first sheet material 21, the light control film 3, and the second sheet material 41 are integrated by thermocompression bonding. No additional adhesive is required between the protective layer 4 and the light control film 3, between the protective layer 4 and the adhesive layer 2, between the adhesive layer 2 and the light control film 3, or between the adhesive layer 2 and the glass plate 1. The two glass plates 1, the two first sheet materials 21, the light control film 3, and the multiple second sheet materials 41 can be integrated solely by the viscosity generated after thermocompression bonding the first sheet material 21 and the second sheet material 41. Specifically, the second sheet material 41 is also made of PVB. The thickness of the protective layer 4 formed by thermocompression bonding the second sheet material 41 is the same as or approximately equivalent to the thickness of the light control film 3. The thickness of the second sheet material 41 is 0.38mm to 0.76mm. The thickness of the light control film 3 is 0.38mm to 0.76mm. Both the first sheet material 21 and the second sheet material 41 can be one of ordinary PVB sheet material, soundproof PVB sheet material, heatproof PVB sheet material, heat and soundproof PVB sheet material, or other high performance (e.g., UV filtering) PVB sheet material, or any combination thereof.

[0021] As shown in FIG. 3 , in the second embodiment, the glass plate 1, adhesive layer 2, and light-control film 3 are integrated by thermocompression bonding. The adhesive layer 2 has multiple edge regions 211. The edge regions 211 of the two adhesive layers 2 are bonded together during thermocompression bonding to form a protective layer 4′ located outside the edge portion 31 of the light-control film 3. Specifically, the edge regions 211 of the adhesive layer 2 are the edge portions of the first sheet material 21 and the area close to those edges. The thickness of the light-control film 3 is 0.2 mm or less. If the thickness of the light-control film 3 exceeds 0.2 mm, the gap between the edge regions 211 of the two adhesive layers 2 will be too large, making it difficult to bond them together during thermocompression bonding to form the protective layer 4′, or the formed protective layer 4′ will not be able to be connected to the edge portion 31 of the light-control film 3.

[0022] As shown in FIG. 4, in the third embodiment, the protective layer 4″ is connected to the light management film 3 through an adhesive layer 5, and the material of the adhesive layer 5 includes, but is not limited to, ionic plastic polymer, ethylene vinyl acetate (EVA), pour-in-place (CIP) liquid resin and thermoplastic polyurethane (TPU).

[0023] As shown in FIG. 5, in this embodiment, all the edge portions 31 of the light control film 3 are visible edge portions 311, and all have corresponding light-shielding portions 23 for shading.

[0024] 6 to 12, the light control film 3 is assembled on the mounting body, and at least one edge portion 31 of the light control film 3 is an attachment edge portion 312, and the portion where the attachment edge portion 312 and the protective layer 4 are joined can be shielded by the mounting body. Since the bright line at the joint where the attachment edge portion 312 and the protective layer 4 are joined is shielded by the mounting body, there is no need to install a corresponding light-shielding portion 23 on the adhesive layer 2 to shield it. The number and positions of the visible edge portions 311 and mounting edge portions 312 are not specifically limited, as long as the edge portion 31 that is visible when the light control glass is assembled to the mounting body and used is shielded by the light-shielding portion 23.

[0025] Specifically, the four edge portions 31 of the light control film 3 are a top edge portion, a front edge portion, a rear edge portion, and a bottom edge portion. The mounting edge portion 312 may be located at an edge portion that blends into the mounting body of the light control glass and is shielded by the mounting body, or may be located at an edge portion that enters the inside of the mounting body of the light control glass and is shielded by the mounting body.

[0026] 6, in the fourth embodiment, the top edge is shielded by a light shielding portion 23. The front edge, the rear edge, and the bottom edge are not provided with a corresponding light shielding portion 23.

[0027] As shown in FIG. 7, in the fifth embodiment, the top edge, the front edge, and the rear edge are shielded by three corresponding light-shielding portions 23, and only the bottom edge does not have a corresponding light-shielding portion 23.

[0028] As shown in FIG. 8, in the sixth embodiment, the top edge and the front edge are shielded by two corresponding light-shielding portions 23, and no corresponding light-shielding portions 23 are provided for the rear edge and the bottom edge.

[0029] 9, in the seventh embodiment, the top edge and the rear edge are shielded by two corresponding light-shielding portions 23. The front edge and the bottom edge are not provided with corresponding light-shielding portions 23.

[0030] 10, in the eighth embodiment, the top edge and the bottom edge are shielded by two corresponding light-shielding portions 23. The front edge and the rear edge are not provided with corresponding light-shielding portions 23.

[0031] 11, in the ninth embodiment, the top edge, the bottom edge, and the front edge are shielded by three corresponding light-shielding portions 23. The rear edge alone does not have a corresponding light-shielding portion 23.

[0032] 12, in the tenth embodiment, the top edge, the bottom edge, and the rear edge are shielded by three corresponding light-shielding portions 23. Only the front edge does not have a corresponding light-shielding portion 23.

[0033] The use scene of the light-controlling glass is not specifically limited, and as shown in Fig. 2, in this embodiment, the mounting body is a door body. Alternatively, the mounting body may be a sunroof body, and the light-controlling glass may be a sunroof glass mounted on the sunroof body. Alternatively, the mounting body may be a front window body, and the light-controlling glass may be a windshield mounted on the front window body. Alternatively, the mounting body may be a rear window body, and the light-controlling glass may be a rear window mounted on the rear window body. Alternatively, the mounting body may be another structure, such as a door structure of a building.

[0034] The shape of the glass plate is not specifically limited and can be adjusted according to actual installation needs. The color of the glass plate includes, but is not limited to, green transparent glass, white transparent glass, gray transparent glass, and UV-resistant glass and can be selected according to actual needs.

[0035] (Embodiment 2) The present invention further provides a door assembly including a light-control glass. The light-control glass in this embodiment has the same operating principle and beneficial effects as the light-control glass in embodiment 1, so a description thereof will be omitted here.

[0036] As shown in Figure 2, the light-controlling glass is a door glass mounted on a door body, thereby forming a movable side window with a light-controlling function. In this application, the light-blocking portion 23 is installed on the adhesive layer 2, eliminating the need to print a black ink layer on the surface of the light-controlling glass. This avoids damage or loss of the black ink layer due to "scratching" or "friction" between the exposed black ink layer and the door body, and avoids interfering with the raising and lowering or other operations of the light-controlling glass. Specifically, the two glass sheets 1 are an outer glass sheet 12 and an inner glass sheet 11, with the outer glass sheet 12 facing the exterior of the vehicle and the inner glass sheet 11 facing the interior of the vehicle.

[0037] As shown in FIG. 2, a line is drawn where the outer layer glass sheet 12 overlaps with the inner layer glass sheet 11 to indicate the difference in shape between the outer layer glass sheet 12 and the inner layer glass sheet 11. In fact, both the outer layer glass sheet 12 and the inner layer glass sheet 11 are transparent. The outer layer glass sheet 12 is tempered glass, and the inner layer glass sheet 11 is chemically tempered glass. The outer layer glass sheet 12 extends downward relative to the inner layer glass sheet 11 to form a mounting section 121, which is connected to the lifting mechanism. By constructing the outer layer glass sheet 12 from tempered glass and the inner layer glass sheet 11 from chemically tempered glass, the light weight of the chemically tempered glass allows the light-controlling glass to withstand external loads, reducing the overall weight of the light-controlling glass. Furthermore, because chemically tempered glass is thin, the mounting section 121 can be placed on the outer layer glass sheet 12, avoiding the need to drill a hole in the inner layer glass sheet 11 and ensuring the stability of the connection between the light-controlling glass and the lifting mechanism. Specifically, the thickness of the inner layer glass plate 11 is 0.7 mm to 1.1 mm, and the thickness of the outer layer glass plate 12 is 3.2 mm to 6.0 mm.

[0038] As shown in Fig. 13, in the eleventh embodiment, the outer layer glass sheet 12 and the inner layer glass sheet 11 have the same shape. At least one of the two glass sheets 1 is semi-tempered glass, or at least one is heat-strengthened glass.

[0039] (Embodiment 3) The present invention further provides a vehicle including a photochromic glass. The photochromic glass of this embodiment has the same operating principle and beneficial effects as the photochromic glass of embodiment 1, so a description thereof will be omitted here.

[0040] The above are merely some embodiments of the present invention, and a person skilled in the art can make various improvements or modifications to the embodiments of the present invention based on the contents disclosed in the application documents within the spirit and scope of the present invention. [Explanation of symbols]

[0041] 1 glass plate 11 Inner layer glass plate 12 Outer glass plate 121 Mounting part 2 Adhesive layer 21 First sheet material 211 Edge area 22 Translucent part 23 Light blocking section 3. Light-controlling film 31 Edge 311 Visible Edges 312 Mounting edge 4 layers of protection 41 Second sheet material 4' protective layer 4'' protective layer 5. Adhesion layer 6 electrodes

Claims

1. A photochromic glass, Two glass panes and At least one light management film having a plurality of edge portions; At least two adhesive layers are interposed between the two glass plates, each having a light-transmitting portion and at least one light-shielding portion connected to each other, and the light control film is interposed between the two light-transmitting portions; A protective layer is joined to a plurality of edge portions of the light control film and interposed between the two adhesive layers; Including, At least one edge portion of the light-control film is a visible edge portion, and the portion where the visible edge portion and the protective layer are joined is interposed between the light-shielding portions of the two adhesive layers; Dimmable glass.

2. the adhesive layer includes a first sheet material; the first sheet material includes a transparent area and a color area; The transparent region constitutes the light-transmitting portion, and the color region constitutes the light-shielding portion. The light-controlling glass according to claim 1.

3. the protective layer is a second sheet material, the second sheet material being transparent or colored; The light-controlling glass according to claim 2.

4. The glass plate, the first sheet material, the light control film, and the second sheet material are integrated by thermocompression bonding. The light-controlling glass according to claim 3 .

5. The glass plate, the adhesive layer, and the light control film are integrated by thermocompression bonding, The adhesive layer has a plurality of edge portions, and the edge portions of the two adhesive layers are bonded together during thermocompression bonding to form the protective layer located outside the edge portion of the light control film. The light control glass according to claim 1 .

6. The thickness of the light-control film is 0.2 mm or less. The light-controlling glass according to claim 5 .

7. The adhesive layer and the protective layer are made of one or a combination of polyvinyl alcohol, polycarbonate, ethylene vinyl acetate, thermoplastic polyurethane, polyacetal resin, polybutylene terephthalate, polyethylene vinyl acetate, polyethylene naphthalate, polyvinyl chloride, polyvinyl fluoride, polyacrylate, polymethyl methacrylate, and polyurethane. The light-controlling glass according to claim 1.

8. The protective layer is in contact with the light control film via an adhesive layer. The light-controlling glass according to claim 1.

9. a distance between a connection point between the light-shielding portion and the light-transmitting portion and a position where the visible edge portion and the protective layer are joined together is 3 mm or more; The light-controlling glass according to claim 1.

10. The light management film is assembled on an attachment body, At least one edge portion of the light-control film is an attachment edge portion, and the location where the attachment edge portion and the protective layer are joined can be shielded by the attachment body. The light-controlling glass according to claim 1.

11. 1. A door assembly comprising: The light control glass according to any one of claims 1 to 10, The light-control glass is assembled on a door body, and the two glass sheets are an outer layer glass sheet and an inner layer glass sheet, respectively; The outer layer glass sheet is installed facing the exterior of the vehicle, and the inner layer glass sheet is installed facing the interior of the vehicle. Door assembly.

12. the outer layer glass sheet is tempered glass, and the inner layer glass sheet is chemically tempered glass; The door assembly of claim 11.

13. A vehicle comprising the light control glass according to any one of claims 1 to 10.

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