Dimming diaphragm, edge sealing method thereof, dimming glass and vehicle

Abstract

The invention discloses a dimming diaphragm and an edge sealing method thereof, dimming glass and a vehicle, the dimming diaphragm comprises a first base material layer, a first conductive layer, a dimming layer, a second conductive layer and a second base material layer which are arranged in a stacked mode, grooves are formed in the edge of the dimming diaphragm, the grooves comprise electrode isolation grooves and edge sealing grooves, and the electrode isolation grooves are communicated with the edge sealing grooves. An electrode structure is arranged on the outer side of the electrode isolation groove, and the edge sealing groove penetrates through the first base material layer, the first conductive layer, the dimming layer and the second conductive layer in the thickness direction; an edge sealing structure is further arranged at the edge position of the dimming diaphragm, the edge sealing structure comprises an edge sealing strip, the edge sealing strip comprises a positioning area with a first width and an isolation area with a second width, the positioning area is located on the portion, on the inner side of the groove, of the dimming diaphragm at a preset interval, and the isolation area at least covers the groove. The thin film strip can be quickly attached, the production efficiency is improved, and meanwhile stable and reliable edge sealing operation can be achieved in an automatic mode.

Description

Technical Field

[0001] This invention relates to the field of dimming film technology, and particularly to a dimming film and its sealing method, dimming glass, and vehicles. Background Technology

[0002] With advancements in dimming film technology, dimming glass, formed by combining dimming film with glass, has emerged. These products allow for adjustable privacy by changing the glass's light transmittance through power switching. In the automotive glass sector, automotive dimming glass has a large market share; however, automotive glass has higher standards than architectural glass, thus requiring more stringent requirements for the corresponding dimming films.

[0003] Currently, most automotive smart glass uses laminated glass. The core structure of this type of glass in the automotive industry primarily involves encapsulating a dimming film between two panes of glass using an adhesive film. The high-temperature, high-pressure encapsulation environment used in this process can easily cause small molecules of plasticizer in the adhesive film to penetrate the liquid crystal layer of the dimming film, resulting in the dimming function at the edges of the film becoming transparent and ineffective. Furthermore, as the smart glass is used over time, these small molecules in the adhesive film continue to erode the liquid crystal layer, causing the dimming function to fail. Therefore, edge sealing of the dimming film is necessary.

[0004] However, there is still much room for improvement in the existing edge sealing methods for dimming films.

[0005] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this application and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this application. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a dimming film and its sealing method, dimming glass, and a vehicle, which enables rapid application of film strips, improves production efficiency, and facilitates stable and reliable sealing operations through automation.

[0007] The specific technical solution of the embodiments of the present invention is as follows: A dimming film includes: a first substrate layer, a first conductive layer, a dimming layer, a second conductive layer, and a second substrate layer stacked together. A groove is provided at the edge of the dimming film, the groove including an electrode isolation groove and a sealing groove. An electrode structure is provided on the outer side of the electrode isolation groove. The sealing groove penetrates the first substrate layer, the first conductive layer, the dimming layer, and the second conductive layer along the thickness direction. An edge sealing structure is also provided at the edge of the dimming film, the sealing structure including: an edge sealing strip, the edge sealing strip including a positioning area with a first width and an isolation area with a second width, the positioning area being located on the dimming film inside the groove at a predetermined distance, and the isolation area at least covering the groove.

[0008] In a preferred embodiment, the edge sealing strip is an edge sealing strip with adhesive backing, the positioning area is an adhesive area with the adhesive backing, and the isolation area is a non-adhesive area without the adhesive backing.

[0009] In a preferred embodiment, the non-adhesive area extends to the outside of the groove of the dimming film on the side opposite to the adhesive area, and the distance from the non-adhesive area to the outside of the groove of the dimming film is at least 0.5 mm; the sealing structure has at least one overlapping structure, the overlapping structure including a first overlapping portion and a second overlapping portion formed by a portion of the sealing strip, the adhesive of the first overlapping portion being located on the dimming film inside the groove; the second overlapping portion covering the first overlapping portion, and along the extending direction of the first overlapping portion, the adhesive of the second overlapping portion completely covering the first overlapping portion, and being spaced apart from the end of the first overlapping portion.

[0010] In a preferred embodiment, the first width of the adhesive-backed area is W1, where W1 ≤ 3 mm, and the second width of the non-adhesive-backed area is W2, where W2 ≥ 3 mm.

[0011] In a preferred embodiment, the edge banding strip includes a first edge banding strip having the first overlapping portion and a second edge banding strip having the second overlapping portion. Along the extension direction of the first edge banding strip, the second edge banding strip has a starting position and an ending position for overlapping with the first edge banding strip. The distance from the starting position to the ending position is W3, where W3 ≥ W1 + 0.5 mm, and the distance from the ending position to the inner side of the groove is W4, where W4 ≥ 2 mm.

[0012] In a preferred embodiment, the dimming film is a polygonal dimming film; the polygonal dimming film includes: a rectangular dimming film and a trapezoidal dimming film.

[0013] In a preferred embodiment, the edge sealing strip includes a substrate, the area on the substrate with adhesive backing is the adhesive backing area, and the area on the substrate without adhesive backing is the non-adhesive backing area. The material of the substrate includes any one of the following: PET, PE, PP; the material of the adhesive backing includes any one of the following: silicone, acrylic adhesive, acrylic adhesive.

[0014] In a preferred embodiment, the electrode structure includes a first electrode and a second electrode, and the electrode isolation groove includes a first electrode isolation groove and a second electrode isolation groove. The first electrode isolation groove penetrates the first substrate layer, the first conductive layer and the dimming layer, and the second electrode isolation groove penetrates the second substrate layer, the second conductive layer and the dimming layer. The first electrode isolation groove and the second electrode isolation groove are connected to the sealing groove.

[0015] In a preferred embodiment, the edge sealing structure includes: a first edge sealing structure and a second edge sealing structure. Along the width direction of the edge sealing strip, the middle part of the first edge sealing structure is correspondingly disposed with the edge sealing groove, and both sides of the first edge sealing structure extend to the first substrate layer. The second edge sealing structure is correspondingly disposed with the electrode isolation groove. The second edge sealing structure is entirely located on the first substrate layer and the second substrate layer. The second edge sealing structure is a mating edge sealing structure. The second edge sealing structure located on the first substrate layer cooperates with the first edge sealing structure to form a circumferentially closed single-matting edge sealing structure.

[0016] In a preferred embodiment, the sealing strip of the second sealing structure has an outwardly overlapping portion at the edge of the dimming film, the outwardly overlapping portion being W5, where W5 ≥ 3 mm.

[0017] In a preferred embodiment, the sealing strip of the first sealing structure has a first width for contacting the first substrate layer located inside the sealing groove, the first width being used to form the predetermined distance, the first width being W6, W6≥0.5mm; the groove width of the sealing groove is W7, W7≥1.5mm; the sealing strip of the first sealing structure has a second width for contacting the first substrate layer located outside the sealing groove, the second width being W8, W8≥0.5mm.

[0018] In a preferred embodiment, the second width of the non-adhesive-backed area is W2, where W2 > W6 + W7 + W8.

[0019] In a preferred embodiment, the second edge sealing structure includes an upper edge sealing strip located on the first substrate layer and a lower edge sealing strip located on the second substrate layer. The non-adhesive area of ​​the lower edge sealing strip has a third width for contacting the second substrate layer, the third width being W9, W9 ≥ 3 mm. The non-adhesive area of ​​the upper edge sealing strip has a fourth width for contacting the first substrate layer located inside the electrode isolation groove, the fourth width being W10, W10 ≥ 0.5 mm. The groove width of the electrode isolation groove is W11, W11 ≥ 1 mm. The non-adhesive area of ​​the upper edge sealing strip has a fifth width for contacting the electrode structure located outside the electrode isolation groove, the fifth width being W12, W12 ≥ 3 mm.

[0020] A dimming glass, the dimming glass comprising any of the dimming films described above.

[0021] In a preferred embodiment, the dimming glass further includes: an outer glass pane and an inner glass pane, wherein the outer glass pane is connected to the dimming film via a first adhesive layer, and the inner glass pane is connected to the dimming film via a second adhesive layer. The dimming glass further includes: a shielding area, wherein the shielding area is disposed in a predetermined peripheral area between the first adhesive layer and the outer glass pane, and a predetermined outer ring area between the second adhesive layer and the inner glass pane, and the edge sealing structure of the dimming film can be covered by the shielding area.

[0022] A vehicle comprising any of the dimming glass described above.

[0023] A method for manufacturing a dimming film, the dimming film comprising: a first substrate layer, a first conductive layer, a dimming layer, a second conductive layer, and a second substrate layer stacked together; the method for manufacturing the dimming film includes the following steps: A half-cut is made at the edge of the dimming film to remove a portion of the first substrate layer, the first conductive layer, and the dimming layer. A first electrode is then fabricated on the exposed second conductive layer, and a first electrode isolation groove is formed between the first electrode and the first substrate layer, the first conductive layer, and the dimming layer. A half-cut is made at the edge of the dimming film to remove a portion of the second substrate layer, the second conductive layer, and the dimming layer. A second electrode is then fabricated on the exposed first conductive layer. A second electrode isolation groove is formed between the second electrode and the second substrate layer, the second conductive layer, and the dimming layer. A half-cut is made at the edge position where the first electrode isolation groove and the second electrode isolation groove are not provided on the dimming film, and a portion of the first substrate layer, the first conductive layer, the dimming layer and the second conductive layer are removed to obtain a sealing groove; The edge banding strip is pre-fixed to the substrate layer. The pre-fixed position formed between the edge banding strip and the substrate layer is located inside the groove and is spaced apart from the groove, forming a predetermined contact width with the substrate layer. When the dimming film is encapsulated inside the laminated glass, the negative pressure of the vacuum evacuation during lamination causes the sealing strip to adhere to the substrate layer.

[0024] In a preferred embodiment, the first electrode and the second electrode are disposed on the same side or different sides of the dimming film. The side of the dimming film where the first electrode and / or the second electrode are disposed is the electrode side, and the other sides are non-electrode sides. The non-electrode sides are formed into a first sealing structure by a single-layer sealing method, and the electrode sides are formed into a second sealing structure by a butt-layer sealing method.

[0025] In a preferred embodiment, when the edge sealing strip is attracted to the first substrate layer and the second substrate layer corresponding to the edge sealing groove by using the negative pressure of vacuuming the sheet, the adjacent two ends of the edge sealing strip are staggered at the intersection position. The staggered attachment includes: first, controlling the position of the first overlapping part of the first edge sealing strip inside the edge sealing groove, and then crossing the second overlapping part of the second edge sealing strip over the first overlapping part, and controlling the positioning area of ​​the second overlapping part to completely cover the first overlapping part, and spaced apart from the end of the first overlapping part.

[0026] The technical solution of the present invention has the following significant beneficial effects: In this embodiment, grooves (electrode isolation grooves and sealing grooves) are provided in the edge area of ​​the dimming film, and sealing strips are used to automatically seal the edge area corresponding to the grooves. Specifically, some sealing strips can be pre-fixed to the dimming film inside the grooves, with the remaining unfixed strips covering at least the area requiring sealing. Subsequently, a high-pressure lamination and vacuuming process is used to adsorb the unfixed strips onto the dimming film covering the grooves, thereby achieving efficient and automated sealing.

[0027] Taking the edge sealing groove as an example, some of the unfixed edge sealing strips can completely cover the bottom wall (second substrate layer) and side wall (covering the entire thickness of the first substrate layer, the first conductive layer, the dimming layer and the second conductive layer) of the edge sealing groove formed by the half-cut, thereby forming an edge sealing structure that prevents the intrusion of small plasticizer molecules.

[0028] The entire edge sealing process eliminates the need for welding and avoids manual tape application, significantly improving production efficiency compared to existing edge sealing methods. It also facilitates stable and reliable edge sealing operations through automation.

[0029] Specific embodiments of the invention are disclosed in detail below with reference to the description and accompanying drawings, indicating how the principles of the invention can be employed. It should be understood that the embodiments of the invention are not therefore limited in scope. Features described and / or shown for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. Attached Figure Description

[0030] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, guided by the teachings of this invention, can select various possible shapes and proportions to implement the invention according to specific circumstances.

[0031] Figure 1 This is a schematic diagram of a dimming film before edge sealing, provided in the embodiments of this application; Figure 2 This is a cross-sectional view of a dimming film at the electrode structure before edge sealing, provided in an embodiment of this application. Figure 3 This is a schematic diagram showing the unfolded shape of a sealing strip provided in the embodiments of this application; Figure 4 This is a schematic diagram of a dimming film after edge sealing, provided in the embodiments of this application; Figure 5 for Figure 4 Sectional view at point AA; Figure 6 for Figure 4 Sectional view at point BB; Figure 7 for Figure 4 Side view from the C-direction; Figure 8 for Figure 4 A magnified view of a portion of point I in the middle.

[0032] The reference numerals in the above figures are as follows: 400. Dimming film; 41. First substrate layer; 42. First conductive layer; 43. Dimming layer; 44. Second conductive layer; 45. Second substrate layer; 46. ​​First electrode; 47. Second electrode; 51. First electrode isolation groove; 52. Second electrode isolation groove; 600. Edge banding strip; 601, Adhesive backing area; 602. Non-adhesive backing area; 61. First sealing strip; 62. Second edge sealing strip; 611. First overlapping section; 612. Second overlapping section; 63. Overlapping portion; 71. Edge sealing groove. Detailed Implementation

[0033] The details of the present invention can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of the present invention described herein are for illustrative purposes only and should not be construed as limiting the invention in any way. Under the teachings of this invention, those skilled in the art can conceive of any possible modifications based on the invention, all of which should be considered within the scope of the invention. It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "mounted," "connected," and "connected" should be interpreted broadly, for example, they can refer to mechanical or electrical connections, or internal communication between two elements, and can be direct or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] The edge sealing technology in related technologies includes: dispensing edge sealing technology. This dispensing edge sealing technology is implemented by first performing a half-cut electrode machining and creating grooves around the perimeter of the dimming film; then, applying edge sealing adhesive to the electrode spacing area and the groove positions; and finally, through thermosetting treatment, forming a dense structure with the edge sealing adhesive, thereby preventing small plasticizer molecules in the adhesive film from penetrating the liquid crystal layer, thus achieving an edge sealing and protection effect. The above-mentioned dispensing edge sealing technology has very high process requirements, and in actual application, it is impossible to monitor and control the product quality, making it difficult to control the yield rate.

[0036] In addition, the related technology also provides a PET edge sealing technique, which involves adsorbing and bonding single or double-layer film strips to the perimeter of the dimming film under vacuum during the manufacturing process of dimming laminated glass, forming a sealed structure to prevent small molecules in the adhesive film from corroding the film. Currently, the operation of fixing the film strips to the dimming film mainly relies on manual application of adhesive tape.

[0037] During the edge sealing process using the aforementioned dimming film, the operation of fixing the film strip onto the dimming film mainly involves manual tape application. To ensure a secure fixation, a large number of tape application points are often required, making the process cumbersome and hindering automated production.

[0038] This invention provides a dimming film and its sealing method, dimming glass, and a vehicle, which can realize the rapid application of film strips, improve production efficiency, and facilitate stable and reliable sealing operations through automation.

[0039] Please refer to the following for comprehensive information. Figures 1 to 7 This application specification provides a dimming film 400, which may include: a first substrate layer 41, a first conductive layer 42, a dimming layer 43, a second conductive layer 44, and a second substrate layer 45 stacked together. A groove is provided at the edge of the dimming film 400, the groove including an electrode isolation groove and a sealing groove 71. An electrode structure is provided on the outer side of the electrode isolation groove, and the sealing groove 71 penetrates the first substrate layer 41, the first conductive layer 42, the dimming layer 43, and the second conductive layer 44 along the thickness direction. An edge sealing structure is also provided at the edge of the dimming film 400, the sealing structure including: an edge sealing strip 600, the edge sealing strip 600 including a positioning area with a first width and an isolation area with a second width, the positioning area being located on the dimming film 400 inside the groove at a predetermined distance, and the isolation area at least covering the groove.

[0040] In this embodiment, the edge sealing strip 600 can be an edge sealing strip with adhesive backing. Correspondingly, the adhesive-backed area 601 of the edge sealing strip 600 forms a positioning area, and the non-adhesive-backed area 602 of the edge sealing strip 600 forms an isolation area. In this embodiment, the edge sealing strip 600 is mainly described as having adhesive backing. However, in this embodiment, it is not excluded that the edge sealing strip 600 may at least partially lack adhesive backing. In this case, the edge sealing strip 600 can be pre-fixed to the dimming film 400 by filling with adhesive.

[0041] In this embodiment, the dimming film 400 with the dimming layer 43 may take, but is not limited to, PDLC (Polymer Dispersed Liquid Crystal), SPD (Solid-State Polymer Dispersed Liquid Crystal), EC (Electrochromic), LC (Liquid Crystal), etc. Of course, the dimming film 400 may also take other forms and is not limited to the above description. Those skilled in the art may make other modifications based on the technical essence of this application, but as long as the function and effect achieved are the same as or similar to those of this application, they should be covered within the scope of protection of this application.

[0042] The dimming film 400 can be applied to dimming glass to meet users' dimming needs. In the embodiments of this application, the dimming film 400 mainly includes: a first substrate layer 41 with a first conductive layer 42, a dimming layer 43, and a second substrate layer 45 with a second conductive layer 44. The dimming layer 43 includes, but is not limited to, a liquid crystal layer, such as PDLC, SPD, LC, and EC.

[0043] The first substrate layer 41 has a first surface away from the dimming layer 43 and a second surface close to the dimming layer 43, and the first conductive layer 42 is disposed on the second surface of the first substrate.

[0044] The material of the first substrate layer 41 can specifically be PET (polyethylene terephthalate). Alternatively, the material of the first substrate layer 41 can also be other materials such as PC (polycarbonate), PMMA (polymethyl methacrylate), PVC (polyvinyl chloride), TAC (cellulose triacetate), etc. In the embodiments of this application, PET is used as an example for illustration.

[0045] The first conductive layer 42 can be deposited on the surface of the first substrate layer 41 by coating. Alternatively, the first conductive layer 42 can be deposited on the surface of the first substrate layer 41 by other methods, such as vacuum deposition or printing. The material of the first conductive layer 42 can be a metal oxide material or a conductive polymer material. Specifically, the material of the first conductive layer 42 can be indium tin oxide (ITO). Indium tin oxide (ITO) is a transparent conductive oxide with good transparency and conductivity. It has high light transmittance in the visible light range and provides good conductivity, allowing the dimming film to maintain high transparency while achieving dimming functionality.

[0046] The second substrate layer 45 has a third surface near the dimming layer 43 and a fourth surface away from the dimming layer 43, and the second conductive layer 44 is disposed on the third surface. The material of the second substrate layer 45 can be the same as that of the first substrate layer 41, or it can be different. Specifically, the material of the second substrate layer 45 can be PET (polyethylene terephthalate). In addition, the material of the second substrate layer 45 can also be other materials such as PC (polycarbonate), PMMA (polymethyl methacrylate), PVC (polyvinyl chloride), TAC (cellulose triacetate), etc. In the embodiments of this application, PET is mainly used as an example for illustration.

[0047] The second conductive layer 44 can be deposited on the surface of the second substrate layer 45 by coating. Alternatively, the second conductive layer 44 can be deposited on the surface of the second substrate layer 45 by other methods, such as vacuum deposition or printing. The material of the second conductive layer 44 can be a metal oxide material or a conductive polymer material. Specifically, the material of the second conductive layer 44 can be indium tin oxide (ITO). In the embodiments of this application, the example of using ITO as the material of both the first conductive layer 42 and the second conductive layer 44 is provided.

[0048] The dimming film 400 provided in this application embodiment, taking PDLC as an example, when in use, by applying AC voltage to the first conductive layer 42 and the second conductive layer 44, an electric field is formed, which causes the liquid crystal molecules in the intermediate dimming layer 43 to deflect, thereby realizing the dimming function.

[0049] like Figure 2 As shown, in this embodiment, the electrode structure may include a first electrode 46 and a second electrode 47. The electrode isolation groove includes a first electrode isolation groove 51 and a second electrode isolation groove 52.

[0050] Specifically, the electrode fabrication method for the dimming film 400 is as follows: The first substrate layer 41 and the first conductive layer 42 are partially cut away at a portion of the edge of the dimming film 400, and the dimming layer 43 is removed to expose the second conductive layer 44. A first busbar is then formed on the exposed second conductive layer 44 to create a first electrode 46. For example, the first electrode 46 can be a positive electrode. A first electrode isolation groove 51 is formed between the first electrode 46 and the dimming film 400 to prevent the first electrode 46, which connects to the second conductive layer 44, from being directly electrically connected to the first conductive layer 42. The first electrode isolation groove 51 penetrates the first substrate layer 41, the first conductive layer 42, and the dimming layer 43.

[0051] When fabricating the second electrode 47, the second substrate layer 45 and the second conductive layer 44 are partially cut away at a portion of the edge of the dimming film 400, and the dimming layer 43 is removed to expose the first conductive layer 42. A second busbar is then fabricated on the exposed first conductive layer 42 to form the second electrode 47. For example, the second electrode 47 can be a negative electrode. An electrode isolation groove is formed between the second electrode 47 and the dimming film 400 to prevent the second electrode 47, which is connected to the first conductive layer 42, from being directly electrically connected to the second conductive layer 44. The second electrode isolation groove 52 penetrates the second substrate layer 45, the second conductive layer 44, and the dimming layer 43.

[0052] The first electrode 46 and the second electrode 47 can be distributed at the same edge position of the dimming film 400, or they can be distributed at different edge positions. The first electrode 46 and the second electrode 47 can be distributed on one side edge of the dimming film 400, or they can be distributed on multiple sides of the dimming film 400. For example, taking the first electrode 46 as an example, when the first electrode 46 has a longitudinally elongated, straight strip structure, it can be distributed on one side of the dimming film 400; when the first electrode 46 has an L-shaped structure, it can be distributed on both sides of the dimming film 400. Furthermore, there can be one or more first electrodes 46. Similarly, the form, distribution position, and number of the second electrode 47 can refer to the first electrode 46 described above. In the embodiments of this application, the specific form, distribution position, and number of the first electrode 46 and the second electrode 47 are not uniquely limited in this application. In the accompanying drawings provided in this application, the example mainly illustrates the first electrode 46 and the second electrode 47 being distributed in a strip-like structure on one side edge of the dimming film 400. Other forms can be compared with this application.

[0053] A sealing groove 71 is provided at a portion of the edge of the dimming film 400. This sealing groove 71 can be located on the edge of the dimming film 400, excluding the electrode isolation grooves mentioned above. The starting and ending ends of the sealing groove 71 communicate with the first electrode isolation groove 51 and the second electrode isolation groove 52, respectively. The sealing groove 71 can also be formed by a half-cut. Specifically, the sealing groove 71 penetrates the first substrate layer 41, the first conductive layer 42, the dimming layer 43, and the second conductive layer 44 along the thickness direction of the dimming film 400, exposing the second substrate layer 45.

[0054] The dimming film 400 also has an edge sealing structure at its edge. Specifically, this edge sealing structure can be formed by attaching several edge sealing strips 600 with adhesive backing to the dimming film 400. Specifically, the edge sealing strip 600 has an adhesive backing area 601 of a first width and a non-adhesive backing area 602 of a second width.

[0055] Specifically, the edge sealing strip 600 may include a substrate, the area on the substrate with adhesive backing is the adhesive backing area 601, and the area on the substrate without adhesive backing is the non-adhesive backing area 602. The material of the substrate includes any one of the following: PET (polyethylene terephthalate), PE (polyethylene), PP (polypropylene); the material of the adhesive backing includes any one of the following: silicone, acrylic adhesive, acrylic adhesive.

[0056] When the substrate of the edge sealing strip 600 is selected from any one of PET, PE, and PP, these materials have good density, can reliably block plasticizers, and are low in cost. When the adhesive of the edge sealing strip 600 is selected from any one of silicone, acrylic, and acrylic adhesive, these materials have good adhesion and will not have a negative impact on the sealing effect.

[0057] Of course, the specific materials of the substrate and the adhesive backing of the edge sealing strip 600 can also be other forms, and are not limited to the above description. Those skilled in the art may make other changes under the guidance of the technical essence of this application, but as long as the function and effect achieved are the same as or similar to this application, they should be covered within the scope of protection of this application.

[0058] The sealing strip 600 with adhesive backing can automatically seal the edge areas corresponding to the grooves (electrode isolation groove and sealing groove 71). Specifically, the adhesive backing of the sealing strip 600 can be pre-positioned on the dimming film 400 inside the groove, and the non-adhesive area 602 can at least cover the area to be sealed. Then, through the high-pressure lamination and vacuuming process of the dimming film 400 encapsulated inside the laminated glass, the non-adhesive area 602 is adsorbed onto the dimming film 400 covering the groove, thereby achieving efficient and automated sealing.

[0059] Taking the edge sealing groove 71 as an example, the non-adhesive area 602 can completely cover the bottom wall (second substrate layer 45) and side wall (covering the entire thickness of the first substrate layer 41, the first conductive layer 42, the dimming layer 43 and the second conductive layer 44) of the edge sealing groove 71 formed by half-cutting, thereby forming an edge sealing structure that prevents the intrusion of small plasticizer molecules.

[0060] The entire edge sealing process eliminates the need for welding and avoids manual tape application, significantly improving production efficiency compared to existing edge sealing methods. It also facilitates stable and reliable edge sealing operations through automation.

[0061] The edge sealing strip 600 can be in the form of a roll. When the edge sealing strip 600 needs to be pre-fixed to the edge of the dimming film 400 with adhesive, the roll can be rolled and applied along the edge contour of the dimming film 400, thereby reliably improving the application accuracy and automation level.

[0062] During pre-positioning using the adhesive backing area 601, the inner side of the electrode isolation groove and the sealing groove 71 can be arranged at predetermined intervals in the adhesive backing area 601 to ensure that a barrier structure is formed between the adhesive backing area 601 and the sidewall of the groove. This barrier structure is formed by the non-adhesive backing area 602 between the adhesive backing area 601 and the sidewall of the groove.

[0063] The non-adhesive area 602 at least covers the groove. Specifically, taking the sealing groove 71 as an example, theoretically, in order to ensure a reliable sealing effect at this location, the edge of the non-adhesive area 602 should extend at least to the bottom wall of the sealing groove 71.

[0064] Furthermore, the non-adhesive area 602 extends from the side opposite to the adhesive area 601 to the outside of the dimming film 400 in the groove, and the distance from the non-adhesive area 602 to the outside of the dimming film 400 in the groove is at least 0.5 mm. This non-adhesive area 602, extending at least 0.5 mm wide to the outside of the groove, allows the sealing strip 600 to form a reliable overlapping structure at the corner of the dimming film 400.

[0065] Please refer to the following: Figure 4 and Figure 8 In one embodiment, the edge sealing structure has at least one overlapping structure, the overlapping structure including a first overlapping portion 611 and a second overlapping portion 612 formed by a portion of the edge sealing strip 600, the adhesive backing of the first overlapping portion 611 being located on the dimming film 400 inside the groove; the second overlapping portion 612 covering the first overlapping portion 611, the adhesive backing of the second overlapping portion 612 completely covering the first overlapping portion 611 along the extending direction of the first overlapping portion 611, and being spaced apart from the end of the first overlapping portion 611.

[0066] In this embodiment, considering that the adhesive itself, which plays a role in fixing and bonding during the edge sealing process, may form plasticizer erosion channels, the edge sealing structure can adopt a staggered attachment method to avoid the negative impact of plasticizer erosion channels on the edge sealing effect. That is, at the intersection of the edge sealing strips 600, the two overlapping parts can be staggered. By cleverly controlling the overlapping and attachment position and size, the formation of plasticizer erosion channels can be avoided.

[0067] The contour of the dimming film 400 can be a non-irregular shape. Specifically, the dimming film 400 can be a polygonal dimming film 400. For example, the polygonal dimming film 400 may include: a rectangular dimming film 400 (a square dimming film 400, a rectangular dimming film 400), and a trapezoidal dimming film 400.

[0068] If the dimming film 400 is designed with a large arc angle or other irregular shape to perfectly fit the size of the laminated glass, the sealing strip 600 may have difficulty achieving a tight fit during the sealing process due to the curved transition characteristics at the arc angle. This will not only lead to sealing failure but also cause wrinkles at the arc angle, seriously affecting the sealing performance and product appearance consistency. On the other hand, the square or rectangular dimming film 400 has a straight edge structure, which can be directly adapted to the automated application process of PET rolls. This can avoid the wrinkles caused by the arc angle, ensure the flatness and reliability of the sealing, and also improve production efficiency and reduce process complexity.

[0069] Because the shape of the dimming film 400 matches the size of the glass, it may have large arc angles, which may cause the PET film to be unable to be sealed. The arc angles will wrinkle and affect the sealing. It is preferable to use a square or rectangular shape to achieve automated application of PET roll material and avoid wrinkles.

[0070] Taking the outline of the dimming film 400 as a rectangle as an example, it includes four vertices, and the above-mentioned overlapping structure can be set at the four vertices.

[0071] Specifically, the edge sealing strip 600 includes a first edge sealing strip 61 having a first overlapping portion 611 and a second edge sealing strip 62 having a second overlapping portion 612. Along the extending direction of the first edge sealing strip 61, the second edge sealing strip 62 has a starting position and an ending position for overlapping with the first edge sealing strip 61. The distance from the starting position to the ending position is W3, where W3 ≥ W1 + 0.5 mm, and the distance from the ending position to the inner side of the groove is W4, where W4 ≥ 2 mm.

[0072] In this embodiment, taking the apex corner of one of the dimming films 400 as an example, during the overlap, the first overlapping portion 611 of the first sealing strip 61 is located on the lower layer and contacts the dimming film 400 first; the second overlapping portion 612 of the second sealing strip 62 covers the first overlapping portion 611. The first overlapping portion 611 and the second overlapping portion 612 form an overlapping overlapping area. The distance between the end of the first overlapping portion 611 and the adjacent but non-contacting groove in its extending direction is used to ensure that the adhesive backing of the first sealing strip 61 does not communicate with the groove at that position, thereby avoiding the formation of a plasticizer erosion channel. The distance between the end of the first overlapping portion 611 and the groove is W4, which is the distance from the termination position to the inner side of the groove, where W4 ≥ 2 mm. When the distance is greater than 2mm, it can reliably ensure that there is a sufficient gap between the end of the first overlapping part 611 and the groove, and this gap can be sealed and blocked by the non-adhesive area 602 of the second overlapping part 612.

[0073] Furthermore, when the second overlapping portion 612 overlaps the first overlapping portion 611, the overlap distance between the second overlapping portion 612 and the first overlapping portion 611 (i.e., the distance from the starting position to the ending position) needs to exceed the width of the adhesive backing. Specifically, W3 ≥ W1 + 0.5 mm. In this way, the non-adhesive area 602 of the first overlapping portion 611 can be used to form a sealing barrier against the adhesive backing of the second overlapping portion 612, preventing the adhesive backing of the second overlapping portion 612 from directly forming a plasticizer erosion channel through the corresponding groove position of the first overlapping portion 611. Here, 0.5 mm is the minimum width of the sealing barrier formed by the non-adhesive area 602 of the first overlapping portion 611.

[0074] In this embodiment, the side of the dimming film 400 with electrodes is called the electrode side, and the side without electrodes is called the non-electrode side.

[0075] In this embodiment, the example is given where the first electrode 46 and the second electrode 47 are disposed on one side of the dimming film 400. The non-electrode side can be sealed with a single-sided seal, while the electrode side can be sealed with a double-sided seal.

[0076] After completing single-sided edge sealing and butt-to-button edge sealing, a circumferentially closed edge sealing structure can be formed on one surface of the dimming film 400 (the outer surface of the first substrate layer 41).

[0077] In one embodiment, the edge sealing structure includes: a first edge sealing structure and a second edge sealing structure. Along the width direction of the edge sealing strip, the middle part of the first edge sealing structure is correspondingly disposed with the edge sealing groove 71, and the two sides of the first edge sealing structure extend to the first substrate layer 41. The second edge sealing structure is correspondingly disposed with the electrode isolation groove. The second edge sealing structure is located entirely on the first substrate layer 41 and the second substrate layer 45. The second edge sealing structure is a mating edge sealing structure. The second edge sealing structure located on the first substrate layer 41 cooperates with the first edge sealing structure to form a circumferentially closed single-matting edge sealing structure.

[0078] In this embodiment, taking a rectangular outer contour of the dimming film 400 as an example, it may include four sides. An electrode structure is provided on one side, and the dimming film 400 has a first electrode isolation groove 51 and a second electrode isolation groove 52 correspondingly provided on its upper and lower surfaces. On the other three sides, the dimming film 400 has a sealing groove 71 on one surface of each side. One end of the sealing groove 71 (e.g., the starting end) is connected to the first electrode isolation groove 51, and the other end of the sealing groove 71 (e.g., the ending end) is connected to the second electrode isolation groove 52.

[0079] For the three sides with sealing grooves 71, a single-sided sealing method can be used to form a single-sided sealing structure, with one sealing strip 600 on each side. For the side with an electrode structure, a mating sealing method can be used, with sealing strips 600 on both surfaces of the dimming film 400. One of the sealing strips 600 used for mating (e.g., entirely located on the surface of the first substrate layer 41) can be staggered with the three sealing strips 600 used for single-sided sealing at the corners, forming the aforementioned circumferentially closed single-sided sealing structure on the first substrate layer 41. Another sealing strip 600 used for mating (entirely located on the surface of the second substrate layer 45) can cooperate with one of the sealing strips 600 used for mating to form the mating sealing structure.

[0080] like Figure 6 As shown, in one embodiment, the sealing strip 600 of the second sealing structure has an outwardly overlapping portion 63 at the edge of the dimming film 400, the outwardly overlapping portion 63 being W5, where W5 ≥ 3 mm.

[0081] In this embodiment, by forming an outwardly overlapping portion 63 at the outer edge of the dimming film 400 using two mating edge sealing strips 600, the outwardly overlapping portion 63 can completely cover the exposed edge area of ​​the electrode, preventing plasticizer from penetrating through the gap between the electrode and the substrate. Furthermore, the outwardly overlapping portion 63 can increase the contact area between the dimming film 400 and the glass and adhesive layer, allowing the edge sealing structure to adhere more firmly during vacuuming and minimizing the possibility of displacement or detachment of the edge sealing strips 600.

[0082] like Figure 5 As shown, in one embodiment, the sealing strip 600 of the first sealing structure has a first width for contacting the first substrate layer 41 located inside the sealing groove 71, the first width being W6, W6 ≥ 0.5 mm; the groove width of the sealing groove 71 is W7, W7 ≥ 1.5 mm; the sealing strip 600 of the first sealing structure has a second width for contacting the first substrate layer 41 located outside the sealing groove 71, the second width being W8, W8 ≥ 0.5 mm.

[0083] In this embodiment, by setting the first width, and the first width being at least 0.5 mm or more specifically, at 3 mm or more, on the one hand, it can ensure the contact area between the sealing strip 600 and the first substrate inside the sealing groove 71, thus ensuring the firmness of the contact between the two; on the other hand, the non-adhesive area 602 of the first width can be used to form the gap width between the adhesive and the dimming layer 43, preventing the adhesive from having a negative impact on the dimming layer 43.

[0084] In this embodiment, the width of the sealing groove 71 is at least 1.5 mm, and more specifically, it can be 3 mm or more. This setting can ensure that the sealing strip 600 has sufficient contact area with the bottom of the sealing groove 71 (the inner surface of the second substrate layer 45) to meet the minimum contact width requirement between the sealing strip 600 and the dimming film 400.

[0085] In this embodiment, the sealing strip 600 of the first sealing structure can extend to the dimming film 400 on the outside of the sealing groove 71. Specifically, the width of the sealing strip 600 extending outward from the outside of the sealing groove 71 is at least 0.5 mm. This ensures the adsorption area between the sealing strip 600 and the first substrate on the outside of the sealing groove 71, forming a triple adsorption structure when the sheets are joined: the first substrate on the inside of the sealing groove 71, the second substrate on the bottom wall of the sealing groove 71, and the first substrate on the outside of the sealing groove 71. Furthermore, by setting the second width of the W8 dimension, dimensional shrinkage caused by temperature and humidity changes during use can be compensated, ensuring that the sealing structure does not fail during long-term use.

[0086] For example, in one embodiment, the end of the sealing strip 600 of the first sealing structure can be flush with the edge of the dimming film 400. This ensures the adsorption area and adsorption effect, while also facilitating the machine to use the edge of the dimming film 400 as a reference for easy and accurate positioning of the end of the sealing strip 600, thus improving the level of automation.

[0087] Specifically, the second width W2 required for the sealing strip 600 to cover the non-adhesive area 602 is W2, where W2 > W6 + W7 + W8. For the sealing strip 600 of the first sealing structure, when its adhesive area 601 is assembled to form the triple adsorption structure, it needs to cover the first width, the groove width of the sealing groove 71, and the second width.

[0088] Wherein, the first width of the adhesive-backed area 601 is W1, W1≤3mm, and the second width of the non-adhesive-backed area 602 is W2, W2≥3mm.

[0089] Considering that the dimming film 400 needs to be installed in laminated glass, which has a shielding area, the edge sealing structure needs to be hidden within this area for aesthetic purposes. Simultaneously, to accommodate the minimum contact width requirement between the edge sealing strip 600 and the dimming film 400, the width dimensions of the adhesive-backed area 601 and the non-adhesive-backed area 602 of the edge sealing strip 600 were reasonably set. Specifically, the width of the adhesive-backed area 601 should not be too large, so that sufficient space can be left for the non-adhesive-backed area 602 while ensuring the edge sealing structure is hidden within the shielding area. Specifically, the width of the adhesive-backed area 601 can be within 3mm. This second width is mainly determined based on the aforementioned W6, W7, and W8, as well as the depth of the groove. When W6 ≥ 0.5mm, W7 ≥ 1.5mm, and W8 ≥ 0.5mm, W2 can be above 7mm.

[0090] like Figure 6 As shown, in one embodiment, the second sealing structure includes an upper sealing strip 600 located on the first substrate layer 41 and a lower sealing strip 600 located on the second substrate layer 45. The non-adhesive area 602 of the lower sealing strip 600 has a third width for contacting the second substrate layer 45, the third width being W9, W9 ≥ 3mm. The non-adhesive area 602 of the upper sealing strip 600 has a fourth width for contacting the first substrate layer 41 located inside the electrode isolation groove, the fourth width being W10, W10 ≥ 0.5mm. The groove width of the electrode isolation groove is W11, W11 ≥ 1mm. The non-adhesive area 602 of the upper sealing strip 600 has a fifth width for contacting the electrode structure located outside the electrode isolation groove, the fifth width being W12, W12 ≥ 3mm.

[0091] In this embodiment, for the second edge sealing structure formed by the bonding edge sealing method, the edge sealing strip 600 includes an upper edge sealing strip 600 located on the upper side and a lower edge sealing strip 600 located on the lower side. The upper edge sealing strip 600 is entirely located on the first substrate layer 41 on one side of the dimming glass, and the lower edge sealing strip 600 is entirely located on the second substrate layer 45 on the other side of the dimming glass.

[0092] Taking the lower sealing strip 600 located on the second substrate layer 45 as an example, the non-adhesive area 602 of the lower sealing strip 600 has a third width for contacting the second substrate layer 45. This third width is 3mm or more, thereby ensuring that the lower sealing strip 600 can make firm contact with the second substrate layer 45. The upper limit of this third width can be set according to the principle that the dimming film 400 can be covered by the shielding area after it is installed in the laminated glass. This application does not make a specific numerical limitation here.

[0093] Taking the upper sealing strip 600 located on the first substrate layer 41 as an example, the specific size setting principle of the upper sealing strip 600 can be compared with the size setting in the single-layer sealing method mentioned above.

[0094] Specifically, the fourth width is at least 3mm. On the one hand, it can ensure the contact area between the upper sealing strip 600 and the first substrate inside the first electrode isolation groove 51, ensuring the firmness of the contact between the two. On the other hand, the non-adhesive area 602 of the first width can be used to form the gap width between the adhesive and the dimming layer 43, preventing the adhesive from having a negative impact on the dimming layer 43.

[0095] The groove width of the first electrode isolation groove 51 or the second electrode isolation groove 52 is more than 1mm, which can prevent the busbar from contacting the semi-tangent and causing a short circuit, ensuring the stability of the electrode's conductivity. At the same time, it provides space for the sealing strip 600 to be attached, avoiding interference between the sealing strip 600 and the electrode.

[0096] The fifth width is used to cover the electrode structure outside the first electrode isolation groove 51. The fifth width depends on the width of the electrode structure (e.g., the first electrode 46). When the width of the electrode structure is at least 3 mm, the fifth width is also at least 3 mm. Of course, when the width of the electrode structure is less than 3 mm, the fifth width can also be less than 3 mm.

[0097] This application also provides a dimming glass, which mainly includes the dimming film 400 mentioned above. By setting the dimming film 400, the dimming glass can achieve the technical effects achieved by the dimming film 400 embodiment. For details, please refer to the specific description of the above embodiment, which will not be repeated here.

[0098] Furthermore, the dimming glass may further include: an outer glass pane and an inner glass pane, wherein the outer glass pane is connected to the dimming film 400 via a first adhesive layer, and the inner glass pane is connected to the dimming film 400 via a second adhesive layer. The dimming glass further includes: a shielding area, wherein the shielding area is disposed in a predetermined peripheral area between the first adhesive layer and the outer glass pane, and a predetermined outer ring area between the second adhesive layer and the inner glass pane, and the edge sealing structure of the dimming film 400 can be covered by the shielding area.

[0099] In this embodiment, the dimming glass may include, from the inside out, an outer glass sheet, a first adhesive layer, a dimming film 400, a second adhesive layer, and an inner glass sheet, which are stacked together.

[0100] In the embodiments of this application, the application of the dimming glass in vehicles (especially smart electric vehicles) is used as an example for illustration. When the dimming glass is applied in other scenarios, this application can be referred to by analogy.

[0101] The outer glass pane needs to meet a predetermined transmittance requirement. Specifically, the transmittance of the outer glass pane must be greater than 70%. The color composition of the outer glass pane can be SG / G / C (dark green / green / transparent), with any combination of the three, not limited to the inner / outer order. The outer surface of the outer glass pane is in contact with the external environment of the vehicle, and the inner surface of the outer glass pane is used to adhere the first adhesive layer.

[0102] The material of the first adhesive layer can be any of the following: PVB (polyvinyl butyral), EVA (ethylene-vinyl acetate copolymer), TPU (thermoplastic polyurethane elastomer), SGP (ionic interlayer film), etc.

[0103] The inner glass pane needs to meet predetermined transmittance requirements. Specifically, the transmittance of the inner glass pane must be greater than 70%. Specifically, the glass color composition of the inner glass pane can be SG / G / C (dark green / green / clear), with any combination of the three, not limited to the inner / outer order. The inner surface of the inner glass pane is in contact with the vehicle interior environment, and the outer surface of the inner glass pane is used to adhere the second adhesive layer.

[0104] The material of the second adhesive layer can be any of the following: PVB (polyvinyl butyral), EVA (ethylene-vinyl acetate copolymer), TPU (thermoplastic polyurethane elastomer), SGP (ionic interlayer film), etc.

[0105] The dimming glass may further include: a shielding area, which is disposed in a predetermined peripheral area between the first adhesive layer and the outer glass, and a predetermined outer ring area between the second adhesive layer and the inner glass.

[0106] In this embodiment, the shielding area is located at the edge of the dimming glass, which can shield the electrode structure, edge sealing structure, etc., thereby ensuring the overall neatness and aesthetics of the dimming glass.

[0107] This application also provides a vehicle in which the above-mentioned dimming glass is provided on the doors and windows. By providing the dimming glass, the vehicle can achieve the technical effect achieved by the dimming glass implementation method. For details, please refer to the specific description of the above implementation method. This application will not repeat it here.

[0108] This application also provides a method for manufacturing a dimming film 400, the dimming film 400 comprising: a first substrate layer 41, a first conductive layer 42, a dimming layer 43, a second conductive layer 44, and a second substrate layer 45 stacked together; the method for manufacturing the dimming film 400 includes the following steps: Step S10: Half-cut the dimming film 400 at its edge to remove a portion of the first substrate layer 41, the first conductive layer 42, and the dimming layer 43. A first electrode 46 is then formed on the exposed second conductive layer 44. A first electrode isolation groove 51 is formed between the first electrode 46 and the first substrate layer 41, the first conductive layer 42, and the dimming layer 43. Step S12: Half-cut the dimming film 400 at its edge to remove a portion of the second substrate layer 45, the second conductive layer 44, and the dimming layer 43. A second electrode 47 is then formed on the exposed first conductive layer 42. A second electrode isolation groove 52 is formed between the second electrode 47 and the second substrate layer 45, the second conductive layer 44, and the dimming layer 43. Step S14: Half-cut the dimming film 400 at the edge where the first electrode isolation groove 51 and the second electrode isolation groove 52 are not provided, and remove part of the first substrate layer 41, the first conductive layer 42, the dimming layer 43 and the second conductive layer 44 to obtain the sealing groove 71; Step S16: Pre-fix the edge sealing strip 600 to the substrate layer. The pre-fixed position formed between the edge sealing strip 600 and the substrate layer is located inside the groove and is spaced apart from the groove, forming a predetermined contact width with the substrate layer. Step S18: When encapsulating the dimming film 400 inside the laminated glass, the negative pressure of the vacuum evacuation during lamination is used to adsorb the edge sealing strip 600 onto the substrate layer.

[0109] In this embodiment, steps S10 and S12 specifically involve setting a first electrode 46 at the edge of the dimming film 400 by half-cutting, thereby forming a first electrode isolation groove 51, and setting a second electrode 47 at the edge of the dimming film 400, thereby forming a second electrode isolation groove 52. The specific manufacturing method, size, and corresponding technical effects of the electrode isolation groove can be referred to the description in the above-described embodiment of the dimming film 400, and will not be elaborated further here.

[0110] For step S14, specifically, at the edge position where the first electrode isolation groove 51 and the second electrode isolation groove 52 are not provided on the dimming film, a sealing groove 71 is formed by half-cutting. Specifically, the specific manufacturing method, size and corresponding technical effects of the sealing groove 71 can be referred to the description in the above-mentioned dimming film 400 embodiment, and will not be elaborated here.

[0111] In this embodiment of the application, the above steps S10, S12 and S14 do not have a temporal order. They can be performed simultaneously or sequentially by any combination of arrangements.

[0112] After completing steps S10, S12, and S14 above, step S16 can be performed by attaching the edge sealing strip 600 to the surface of the dimming film. When the edge sealing strip 600 is an edge sealing strip with adhesive backing, the adhesive backing of the edge sealing strip 600 can be used for positioning.

[0113] After the edge sealing strip 600 is pre-fixed, step S18 can be executed, using the negative pressure of vacuuming the laminated sheets to adsorb the edge sealing strip 600 together with the substrate layer at the corresponding position, forming a circumferentially closed edge sealing structure.

[0114] In one embodiment, the first electrode 46 and the second electrode 47 are disposed on the same side of the dimming film 400. The side of the dimming film 400 where the first electrode 46 and the second electrode 47 are disposed is the electrode side, and the other sides are non-electrode sides. The non-electrode sides are formed into a first sealing structure by a single-attach sealing method, and the electrode sides are formed into a second sealing structure by a butt-attach sealing method.

[0115] In this embodiment, the dimming film 400, which is provided with electrode isolation grooves and sealing grooves 71, can be edge-sealed by bonding at the positions where the first electrode 46 and the second electrode 47 are provided, forming a second sealing structure, i.e., a bonding sealing structure; and can be edge-sealed by single bonding at the positions where the sealing grooves 71 are provided, forming a first sealing structure, i.e., a single bonding sealing structure. The specific single bonding sealing structure and bonding sealing structure and their corresponding technical effects can be referred to the description of the dimming film 400 embodiment above, and will not be repeated here.

[0116] In one embodiment, when the edge sealing strip 600 is attracted together with the first substrate layer 41 and the second substrate layer 45 corresponding to the edge sealing groove 71 by using the negative pressure of vacuuming the sheet, the adjacent two ends of the edge sealing strip 600 are staggered at the intersection position. The staggered attachment includes: first, controlling the position of the first overlapping part 611 of the first edge sealing strip 61 inside the edge sealing groove 71, and then crossing the second overlapping part 612 of the second edge sealing strip 62 over the first overlapping part 611, and controlling the positioning area (e.g., adhesive) of the second overlapping part 612 to completely cover the first overlapping part 611, and spaced apart from the end of the first overlapping part 611.

[0117] In this embodiment, when a dimming film 400 with corners is provided with an edge sealing strip 600 at the corner, the adjacent ends of the edge sealing strip 600 can be staggered at the intersection. Specifically, the dimensions to be controlled during staggered attachment, the relative positional relationship of the edge sealing strips 600, and the corresponding technical effects can be referred to the description of the dimming film 400 embodiment above, and will not be repeated here.

[0118] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified element, component, part, or step, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute “may” include is optional. Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The disclosure of “a” or “an” used to describe an element, component, part, or step does not imply exclusion of other elements, components, parts, or steps.

[0119] The various embodiments described in this specification are presented in a progressive manner, with each embodiment focusing on its differences from the others. Similar or identical parts between embodiments can be referred to interchangeably. The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made according to the spirit and essence of the present invention should be included within the scope of protection of the present invention.

Claims

1. A dimming film, characterized in that, The dimming film comprises: a first substrate layer, a first conductive layer, a dimming layer, a second conductive layer, and a second substrate layer, which are stacked together. The dimming film has a groove at its edge, which includes an electrode isolation groove and an edge sealing groove. An electrode structure is provided on the outside of the electrode isolation groove, and the edge sealing groove penetrates the first substrate layer, the first conductive layer, the dimming layer and the second conductive layer along the thickness direction. The edge of the dimming film is further provided with an edge sealing structure, the edge sealing structure including: an edge sealing strip, the edge sealing strip including a positioning area with a first width and an isolation area with a second width, the positioning area being located on the dimming film inside the groove at a predetermined distance, and the isolation area at least covering the groove.

2. The dimming film as described in claim 1, characterized in that, The edge sealing strip is an edge sealing strip with adhesive backing, the positioning area is an adhesive area with the adhesive backing, and the isolation area is a non-adhesive area without the adhesive backing.

3. The dimming film as described in claim 2, characterized in that, The dimming film extending from the side of the non-adhesive area away from the adhesive area to the outside of the groove has a distance of at least 0.5 mm. The edge sealing structure has at least one overlapping structure, the overlapping structure including a first overlapping portion and a second overlapping portion formed by a portion of the edge sealing strip, the adhesive backing of the first overlapping portion is located on the dimming film inside the groove, the second overlapping portion covers the first overlapping portion, and along the extending direction of the first overlapping portion, the adhesive backing of the second overlapping portion completely covers the first overlapping portion and is spaced apart from the end of the first overlapping portion.

4. The dimming film as described in claim 3, characterized in that, The first width of the adhesive-backed area is W1, where W1 ≤ 3mm, and the second width of the non-adhesive-backed area is W2, where W2 ≥ 3mm.

5. The dimming film as described in claim 4, characterized in that, The edge sealing strip includes a first edge sealing strip having the first overlapping portion and a second edge sealing strip having the second overlapping portion. Along the extension direction of the first edge sealing strip, the second edge sealing strip has a starting position and an ending position for overlapping with the first edge sealing strip. The distance from the starting position to the ending position is W3, where W3 ≥ W1 + 0.5 mm. The distance from the ending position to the inner side of the groove is W4, where W4 ≥ 2 mm.

6. The dimming film as described in claim 2, characterized in that, The edge sealing strip includes a substrate, the area on the substrate with adhesive backing is the adhesive backing area, and the area on the substrate without adhesive backing is the non-adhesive backing area. The material of the substrate includes any one of the following: PET, PE, PP; the material of the adhesive backing includes any one of the following: silicone, acrylic adhesive, acrylic adhesive.

7. The dimming film as described in claim 3, characterized in that, The electrode structure includes a first electrode and a second electrode. The electrode isolation groove includes a first electrode isolation groove and a second electrode isolation groove. The first electrode isolation groove penetrates the first substrate layer, the first conductive layer and the dimming layer. The second electrode isolation groove penetrates the second substrate layer, the second conductive layer and the dimming layer. The first electrode isolation groove and the second electrode isolation groove are connected to the sealing groove.

8. The dimming film as described in claim 7, characterized in that, The edge sealing structure includes: a first edge sealing structure and a second edge sealing structure. Along the width direction of the sealing strip, the middle part of the first sealing structure is correspondingly provided with the sealing groove, and the two sides of the first sealing structure extend to the first substrate layer; The second edge sealing structure is correspondingly disposed to the electrode isolation groove. The second edge sealing structure is located entirely on the first substrate layer and the second substrate layer. The second edge sealing structure is a mating edge sealing structure. The second edge sealing structure located on the first substrate layer cooperates with the first edge sealing structure to form a circumferentially closed single-layer edge sealing structure.

9. The dimming film as described in claim 8, characterized in that, The sealing strip of the second sealing structure has an outwardly overlapping portion at the edge of the dimming film, and the outwardly overlapping portion is W5, where W5 ≥ 3mm.

10. The dimming film as described in claim 8, characterized in that, The first edge sealing structure has an edge sealing strip with a first width for contacting the first substrate layer located inside the edge sealing groove, the first width being used to form the predetermined distance, the first width being W6, W6≥0.5mm; the groove width of the edge sealing groove is W7, W7≥1.5mm; the first edge sealing structure has an edge sealing strip with a second width for contacting the first substrate layer located outside the edge sealing groove, the second width being W8, W8≥0.5mm.

11. The dimming film as described in claim 10, characterized in that, The second width of the non-adhesive-backed area is W2, where W2 > W6 + W7 + W8.

12. The dimming film as described in claim 8, characterized in that, The second edge sealing structure includes an upper edge sealing strip located on the first substrate layer and a lower edge sealing strip located on the second substrate layer. The non-adhesive area of ​​the lower sealing strip has a third width for contacting the second substrate layer, the third width being W9, where W9 ≥ 3 mm; The non-adhesive area of ​​the upper sealing strip has a fourth width for contacting the first substrate layer located inside the electrode isolation groove, the fourth width being W10, where W10 ≥ 0.5 mm; The width of the electrode isolation groove is W11, where W11 ≥ 1 mm; The non-adhesive area of ​​the upper sealing strip has a fifth width for contacting the electrode structure located outside the electrode isolation groove, the fifth width being W12, where W12 ≥ 3 mm.

13. A type of dimming glass, characterized in that, The dimming glass includes the dimming film as described in any one of claims 1 to 12.

14. The dimming glass as described in claim 13, characterized in that, The dimming glass further includes an outer glass pane and an inner glass pane. The outer glass pane is connected to the dimming film via a first adhesive layer, and the inner glass pane is connected to the dimming film via a second adhesive layer. The dimming glass further includes a shielding area, which is disposed in a predetermined peripheral area between the first adhesive layer and the outer glass pane, and a predetermined outer ring area between the second adhesive layer and the inner glass pane. The edge sealing structure of the dimming film can be covered by the shielding area.

15. A vehicle, characterized in that, The vehicle includes the dimming glass as described in any one of claims 13 to 14.

16. A method for manufacturing a dimming film, characterized in that, The dimming film comprises: a first substrate layer, a first conductive layer, a dimming layer, a second conductive layer, and a second substrate layer stacked together; the method for manufacturing the dimming film includes the following steps: A half-cut is made at the edge of the dimming film to remove a portion of the first substrate layer, the first conductive layer, and the dimming layer. A first electrode is then fabricated on the exposed second conductive layer, and a first electrode isolation groove is formed between the first electrode and the first substrate layer, the first conductive layer, and the dimming layer. A half-cut is made at the edge of the dimming film to remove a portion of the second substrate layer, the second conductive layer, and the dimming layer. A second electrode is then fabricated on the exposed first conductive layer. A second electrode isolation groove is formed between the second electrode and the second substrate layer, the second conductive layer, and the dimming layer. A half-cut is made at the edge position where the first electrode isolation groove and the second electrode isolation groove are not provided on the dimming film, and a portion of the first substrate layer, the first conductive layer, the dimming layer and the second conductive layer are removed to obtain a sealing groove; The edge banding strip is pre-fixed to the substrate layer. The pre-fixed position formed between the edge banding strip and the substrate layer is located inside the groove and is spaced apart from the groove, forming a predetermined contact width with the substrate layer. When the dimming film is encapsulated inside the laminated glass, the negative pressure of the vacuum evacuation during lamination causes the sealing strip to adhere to the substrate layer.

17. The method for manufacturing the dimming film as described in claim 16, characterized in that, The first electrode and the second electrode are disposed on the same side or different sides of the dimming film. The side of the dimming film where the first electrode and / or the second electrode are disposed is the electrode side, and the other sides are non-electrode sides. The non-electrode sides are formed by a single-layer sealing method to form a first sealing structure, and the electrode sides are formed by a butt-layer sealing method to form a second sealing structure.

18. The method for manufacturing a dimming film as described in claim 16 or 17, characterized in that, When the negative pressure of vacuuming the sheet is used to adsorb the edge sealing strip together with the first substrate layer and the second substrate layer corresponding to the edge sealing groove, the adjacent two ends of the edge sealing strip are staggered at the intersection position. The staggered attachment includes: first, controlling the position of the first overlapping part of the first edge sealing strip inside the groove, and then crossing the second overlapping part of the second edge sealing strip over the first overlapping part, and controlling the positioning area of ​​the second overlapping part to completely cover the first overlapping part, and spaced apart from the end of the first overlapping part.

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