Switchable film and switchable glass

Abstract

Provided in the present application is a switchable film, comprising a first transparent substrate, a second transparent substrate, and a light control layer arranged between the first transparent substrate and the second transparent substrate. A first transparent conductive layer is arranged between the first transparent substrate and the light control layer, and a second transparent conductive layer is arranged between the second transparent substrate and the light control layer. The first transparent conductive layer is provided with an isolation region, and the isolation region divides the first transparent conductive layer into at least two areas that are electrically isolated from each other. At least two first conductive leads are arranged on the transparent conductive layer provided with the isolation region, and the first conductive leads are respectively electrically connected to the areas of the transparent conductive layer that are electrically isolated from each other. Further provided in the present application are switchable glass and a switchable glass product. The switchable film and the switchable glass provided in the present application can selectively perform light modulation or heating on the basis of requirements. Furthermore, the switchable film and the switchable glass can also achieve both light modulation and heating functions, and have good practical prospects.

Description

A dimming film and dimming glass

[0001] Cross-referencing

[0002] This application claims priority to Chinese Patent Application No. 202510098329.4, entitled "A dimming film and dimming glass", filed on January 21, 2025, the contents of which are incorporated herein by reference in their entirety. Technical Field

[0003] This invention relates to the field of light control device technology, and more particularly to dimming films and dimming glass. Background Technology

[0004] A dimming film is an electronic light-controlling device. It mainly consists of a light-controlling layer placed between two transparent conductive films. It can change its optical properties, such as transmittance and haze, under external stimuli such as electric field, heat, and light. When an electric field is applied, the arrangement or state of the materials in the light-controlling layer changes, thereby changing the light transmission characteristics of the device, such as switching from low transmittance to high transmittance or from high transmittance to low transmittance. Alternatively, through the action of an electric field, it can also achieve rapid switching between the on and off states.

[0005] Depending on the light control mechanism of the light-control layer, dimming films can be classified into suspended particle dimming films (SPD), polymer-dispersed liquid crystal dimming films (PDLC), and electrochromic dimming films (EC), etc. However, current dimming films only have a single dimming function and cannot realize dimming and heating functions, or cannot selectively control dimming or heating functions as needed. Summary of the Invention

[0006] The technical problem solved by the present invention is to provide a dimming film. The dimming film provided by the present application can selectively dim or heat as needed. Furthermore, the dimming film provided by the present application also has dual functions of dimming and heating.

[0007] In view of this, this application provides a dimming film, comprising:

[0008] A first transparent substrate, a second transparent substrate, and a light-controlling layer disposed between the first transparent substrate and the second transparent substrate;

[0009] A first transparent conductive layer is disposed between the first transparent substrate and the light control layer, and a second transparent conductive layer is disposed between the second transparent substrate and the light control layer;

[0010] The first transparent conductive layer is provided with an isolation region, which divides the first transparent conductive layer into at least two regions that are electrically non-conductive to each other; or, the second transparent conductive layer is provided with an isolation region, which divides the second transparent conductive layer into at least two regions that are electrically non-conductive to each other.

[0011] At least two first conductive leads are provided on the transparent conductive layer with the isolation area. The first conductive leads are electrically connected to areas on the transparent conductive layer that are not electrically connected to each other.

[0012] In some specific embodiments, the first transparent conductive layer is provided with an isolation region, and the second transparent conductive layer is provided with at least two second conductive leads, which are electrically connected to the second transparent conductive layer; or, the second transparent conductive layer is provided with an isolation region, and the first transparent conductive layer is provided with at least two second conductive leads, which are electrically connected to the first transparent conductive layer.

[0013] In some specific embodiments, the first conductive lead is electrically connected to the corresponding electrode of the first power source.

[0014] In some specific embodiments, the second conductive lead is electrically connected to the corresponding electrode of the second power supply.

[0015] In some specific embodiments, the first power source is an AC power source.

[0016] In some specific embodiments, the second power source is an AC power source or a DC power source.

[0017] In some specific embodiments, the number of the first conductive leads is less than or equal to the number of mutually non-conductive regions of the first or second transparent conductive layer.

[0018] In some specific embodiments, the width of the isolation zone is 1 μm to 1 mm.

[0019] In some specific embodiments, the shape of the isolation zone includes at least one of a straight line, a curve, and a polygonal line.

[0020] In some specific embodiments, the isolation region is formed by etching.

[0021] In some specific embodiments, the etching method includes one or more of ion beam etching, deep silicon etching, reactive ion etching, focused ion beam etching, inductively coupled plasma etching, microwave plasma etching, external laser etching, internal laser etching, and chemical etching.

[0022] In some specific embodiments, the etching method is laser internal etching or laser external etching.

[0023] In some specific embodiments, the first transparent substrate and the second transparent substrate are transparent plastic sheets;

[0024] And / or, the first transparent conductive layer and the second transparent conductive layer are each independently selected from one or more of the following: ITO conductive layer, FZO conductive layer, IZO conductive layer, GZO conductive layer, AZO conductive layer, PEDOT conductive layer, nano Ag wire conductive layer, conductive graphene, conductive polymer and nano Cu wire conductive layer;

[0025] And / or, the light control layer includes at least one of a suspended particle light control layer, a polymer-dispersed liquid crystal light control layer, and an electrochromic light control layer.

[0026] This application also provides a dimming film, comprising:

[0027] A first transparent substrate, a second transparent substrate, and a light-controlling layer disposed between the first transparent substrate and the second transparent substrate;

[0028] A light-adjusting transparent conductive layer is disposed between the first transparent substrate and the light-controlling layer, and a heating transparent conductive layer is disposed between the second transparent substrate and the light-controlling layer;

[0029] The dimming transparent conductive layer is provided with an isolation region, which divides the dimming transparent conductive layer into at least two regions that are not electrically conductive to each other.

[0030] The heating transparent conductive layer is provided with an isolation area, and the heating transparent conductive layer is still electrically conductive;

[0031] At least two first conductive leads are provided on the dimming transparent conductive layer with the isolation area. The first conductive leads are electrically connected to areas on the dimming transparent conductive layer that are not electrically connected to each other.

[0032] At least two second conductive leads are provided on the heating transparent conductive layer with the isolation area, and the second conductive leads are electrically connected to the heating transparent conductive layer.

[0033] This application also provides a dimming glass, comprising:

[0034] A first transparent substrate, a second transparent substrate, and a dimming film disposed between the first transparent substrate and the second transparent substrate, wherein the dimming film is the dimming film described in the above solution;

[0035] A first adhesive layer is provided between the first transparent substrate and the dimming film, and a second adhesive layer is provided between the second transparent substrate and the dimming film.

[0036] In some specific embodiments, the first transparent substrate and / or the second transparent substrate are independently selected from at least one of transparent glass plates and transparent plastic sheets.

[0037] In some specific embodiments, the first adhesive layer and / or the second adhesive layer are independently selected from at least one of PVB film, EVA film, TPU film, functional PVB film, functional EVA film, functional TPU film, colored PVB film, colored EVA film, and colored TPU film.

[0038] This application also provides a method for preparing the aforementioned smart glass, comprising the following steps:

[0039] The dimming glass is obtained by laminating the layers according to the above scheme.

[0040] In some specific embodiments, the temperature of the lamination process is 90–140°C.

[0041] This application also provides a dimming glass article, which is prepared from the dimming glass described in the above-described scheme or the dimming glass prepared by the preparation method described in the above-described scheme.

[0042] In some specific embodiments, the dimming glass product is automotive window glass, panoramic glass, or glass curtain wall.

[0043] This application also provides a dimming film, comprising a first transparent substrate, a first transparent conductive layer, a light-controlling layer, a second transparent conductive layer, a second transparent substrate, and conductive leads stacked sequentially. The first or second transparent conductive layer has at least one isolation region, which divides the first or second transparent conductive layer into at least two electrically non-conductive regions. The conductive leads are electrically connected to the first or second transparent conductive layer with the isolation region, and the conductive leads are disposed on the same transparent conductive layer.

[0044] In some specific embodiments, there is no electrical conductivity between any regions of the first transparent conductive layer and the second transparent conductive layer.

[0045] In some specific embodiments, there are at least two conductive leads, which are electrically connected to mutually non-conductive regions on the same layer of the first transparent conductive layer or the second transparent conductive layer where the isolation region is set.

[0046] In some specific embodiments, the conductive lead is electrically connected to the corresponding electrode of the power supply via a wire.

[0047] In some specific embodiments, the conductive lead includes at least one of a metal wire, a metal conductive mesh, and a flexible printed circuit board (FPC).

[0048] In some specific embodiments, the width of the isolation zone is 1 μm to 1 mm.

[0049] In some specific embodiments, the shape of the isolation zone is one or a combination of a straight line or a curve.

[0050] In some specific embodiments, the isolation region is formed by etching the first transparent conductive layer or the second transparent conductive layer.

[0051] In some specific embodiments, the etching is one or more of ion beam etching (IBE), deep silicon etching (DRIE), reactive ion etching (RIE), focused ion beam etching (FIB), inductively coupled plasma (ICP) etching, microwave plasma etching, external laser etching, internal laser etching, or chemical etching.

[0052] In some specific embodiments, the etching is external laser etching and / or internal laser etching.

[0053] In some specific embodiments, an adhesive layer is covered on the surface of the first transparent conductive layer and / or the second transparent conductive layer facing the light control layer; the adhesive layer material includes at least one of epoxy resin, polyurethane, polyimide resin, polystyrene resin, acrylic resin, modified acrylic resin or silicone resin.

[0054] In some specific embodiments, the light-controlling layer is selected from at least one of a suspended particle light-controlling layer, a polymer-dispersed liquid crystal light-controlling layer, or an electrochromic light-controlling layer.

[0055] In some specific embodiments, the first transparent substrate and the second transparent substrate are glass plates.

[0056] In some specific embodiments, the first transparent substrate and the second transparent substrate are transparent plastic sheets.

[0057] In some specific embodiments, the first transparent conductive layer and the second transparent conductive layer are each independently selected from at least one of ITO conductive layer, FZO conductive layer, IZO conductive layer, GZO conductive layer, AZO conductive layer, PEDOT conductive layer, nano Ag wire conductive layer, conductive graphene and nano Cu wire conductive layer.

[0058] This application also provides a dimming glass, comprising a first glass plate and a second glass plate, and a dimming film as described above disposed between the first glass plate and the second glass plate.

[0059] In some specific embodiments, a first interlayer is provided between the first glass plate and the dimming film, and / or a second interlayer is provided between the second glass plate and the dimming film.

[0060] This application also provides the application of the dimming film or dimming glass described above in one or more of automotive window glass, panoramic glass, and glass curtain walls.

[0061] This application provides a dimming film, comprising: a first transparent substrate, a second transparent substrate, and a light-controlling layer disposed between the first transparent substrate and the second transparent substrate; a first transparent conductive layer is disposed between the first transparent substrate and the light-controlling layer, and a second transparent conductive layer is disposed between the second transparent substrate and the light-controlling layer; the first transparent conductive layer has an isolation region, which divides the first transparent conductive layer into at least two electrically non-conductive regions; or, the second transparent conductive layer has an isolation region, which divides the second transparent conductive layer into at least two electrically non-conductive regions; at least two first conductive leads are disposed on the transparent conductive layer with the isolation region, and the first conductive leads are respectively electrically connected to the electrically non-conductive regions on the transparent conductive layer. The dimming film provided by this application, by introducing an external power supply through the first conductive leads disposed on the transparent conductive layer with electrically non-conductive regions, changes the current flow and electric field distribution inside the dimming film, allowing for selective dimming as needed.

[0062] Furthermore, this application also provides a dimming film, which has a second conductive lead on an electrically conductive transparent conductive layer to introduce an external power supply, thereby changing the current flow and electric field distribution inside the dimming film, so that the resulting dimming film has both dimming and heating functions.

[0063] Furthermore, this application also provides a dimming glass, which includes the above-mentioned dimming film, so that the dimming glass can selectively dim or heat as needed; on the other hand, the dimming glass provided by this application can also have dual functions of dimming and heating, which can not only ensure that the dimming function of the dimming glass operates normally in a cold climate, but also enable the dimming glass to achieve defrosting and snow removal functions. Attached Figure Description

[0064] Figure 1 is a schematic diagram of a dimming transparent conductive layer and circuit connection provided by the present invention;

[0065] Figure 2 is a schematic diagram of a dimming transparent conductive layer provided by the present invention;

[0066] Figure 3 is a schematic diagram of a heating transparent conductive layer provided by the present invention;

[0067] Figure 4 is a schematic diagram of a heated transparent conductive layer provided by the present invention;

[0068] Figure 5 is a schematic diagram of a cross-sectional structure of a dimming glass provided by the present invention;

[0069] Figure 6 is a schematic diagram of the dimming transparent conductive layer provided in Embodiment 1 of the present invention;

[0070] Figure 7 is a schematic diagram of the heating transparent conductive layer provided in Embodiment 1 of the present invention;

[0071] Figure 8 is a schematic cross-sectional view of the dimming film provided in Embodiment 1 of the present invention;

[0072] Figure 9 is a cross-sectional structural diagram and a circuit connection diagram of the dimming film provided in Embodiment 1 of the present invention;

[0073] Figure 10 is a cross-sectional structural diagram and a circuit connection diagram of the dimming film provided in Embodiment 2 of the present invention;

[0074] Figure 11 is a schematic diagram of the dimming transparent conductive layer provided in Embodiment 3 of the present invention;

[0075] Figure 12 is a schematic diagram of the heating transparent conductive layer provided in Embodiment 3 of the present invention;

[0076] Figure 13 is a schematic diagram of the transparent conductive layer and circuit connection provided in Embodiment 3 of the present invention;

[0077] Figure 14 is a schematic diagram of the planar structure of the first transparent conductive layer provided in Embodiment 4 of the present invention;

[0078] Figure 15 is a schematic diagram of the planar structure and circuit connection of the first transparent conductive layer provided in Embodiment 4 of the present invention;

[0079] Figure 16 is a schematic diagram of the planar structure and circuit connection of the first transparent conductive layer provided in Embodiment 5 of the present invention;

[0080] Figure 17 is a schematic diagram of the planar structure of the first transparent conductive layer provided in Embodiment 6 of the present invention;

[0081] Figure 18 is a schematic diagram of the planar structure of the first transparent conductive layer provided in Embodiment 7 of the present invention;

[0082] Figure 19 is a schematic diagram of the planar structure of the first transparent conductive layer provided in Embodiment 8 of the present invention;

[0083] Figure 20 is a schematic cross-sectional view of the dimming film provided in Embodiment 4 of the present invention;

[0084] Figure 21 is a schematic diagram of the cross-sectional structure of the dimming glass provided in Embodiment 9 of the present invention; wherein, 1 is the first transparent substrate, 2 is the dimming transparent conductive layer, 3 is the light control layer, 4 is the heating transparent conductive layer, 5 is the second transparent substrate, 6 is the first conductive lead, 7 is the isolation area, 12 is the second conductive lead, 8 is the first transparent substrate, 9 is the second transparent substrate, 10 is the first interlayer, 11 is the second interlayer, and A, B, C, and D are all regions on the transparent conductive layer that are not electrically connected to each other. Detailed Implementation

[0085] To further understand the present invention, preferred embodiments of the present invention are described below in conjunction with examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, and not for limiting the scope of the claims of the present invention.

[0086] Given that existing dimming films only have a single dimming function and cannot selectively achieve dimming or heating functions as needed, this application provides a dimming film. This dimming film divides the transparent conductive layer into at least two electrically non-conductive regions by setting an isolation region on the transparent conductive layer, allowing the corresponding light-controlling layer regions to be selectively dimmed as needed. Specifically, this application provides a dimming film comprising:

[0087] A first transparent substrate, a second transparent substrate, and a light-controlling layer disposed between the first transparent substrate and the second transparent substrate;

[0088] A first transparent conductive layer is disposed between the first transparent substrate and the light control layer, and a second transparent conductive layer is disposed between the second transparent substrate and the light control layer;

[0089] The first transparent conductive layer is provided with an isolation region, which divides the first transparent conductive layer into at least two regions that are electrically non-conductive to each other; or, the second transparent conductive layer is provided with an isolation region, which divides the second transparent conductive layer into at least two regions that are electrically non-conductive to each other.

[0090] At least two first conductive leads are provided on the transparent conductive layer with the isolation area. The first conductive leads are electrically connected to areas on the transparent conductive layer that are not electrically connected to each other.

[0091] In the dimming film provided in this application, the first transparent substrate and the second transparent substrate are transparent substrates well known to those skilled in the art, and this application does not impose any special limitations on them; for example, the first transparent substrate and the second transparent substrate may be selected from transparent plastic sheets, specifically, the first transparent substrate and the second transparent substrate may be selected from PET. The materials selected for the first transparent conductive layer and the second transparent conductive layer are well known to those skilled in the art, and this application does not impose any special limitations on them; for example, the first transparent conductive layer includes one or more of ITO conductive layer, FZO conductive layer, IZO conductive layer, GZO conductive layer, AZO conductive layer, PEDOT conductive layer, nano Ag wire conductive layer, conductive graphene, conductive polymer and nano Cu wire conductive layer, and the second transparent conductive layer includes ITO conductive layer, FZO conductive layer, IZO conductive layer, GZO conductive layer, AZO conductive layer, PEDOT conductive layer, nano Ag wire conductive layer, etc. The conductive layer comprises one or more of conductive graphene, conductive polymer, and nano-Cu wire conductive layer. Specifically, the first transparent conductive layer is selected from one of ITO conductive layer, FZO conductive layer, IZO conductive layer, GZO conductive layer, AZO conductive layer, PEDOT conductive layer, nano-Ag wire conductive layer, conductive graphene, conductive polymer, and nano-Cu wire conductive layer, and the second transparent conductive layer is selected from one of ITO conductive layer, FZO conductive layer, IZO conductive layer, GZO conductive layer, AZO conductive layer, PEDOT conductive layer, nano-Ag wire conductive layer, conductive graphene, conductive polymer, and nano-Cu wire conductive layer.

[0092] The light control layer is a light control layer well known to those skilled in the art, and this application does not impose any special limitations on it. For example, the light control layer includes one or more of a suspended particle light control layer, a polymer-dispersed liquid crystal light control layer, and an electrochromic light control layer. Specifically, the light control layer is selected from one of the suspended particle light control layer, a polymer-dispersed liquid crystal light control layer, and an electrochromic light control layer.

[0093] In this application, the first transparent conductive layer and the second transparent conductive layer are provided with an isolation region, or the second transparent conductive layer is provided with an isolation region. Correspondingly, the isolation region divides the first transparent conductive layer or the second transparent conductive layer into at least two regions, and at least two adjacent regions are electrically non-conductive. According to the working principle of the dimming film, the mutually non-conductive regions correspond to the bright or dark state adjustment of the dimming region corresponding to the dimming region of the dimming film's light control layer. The dimming region of the light control layer corresponds in shape to the electrically non-conductive region of the transparent conductive layer. In this application, if the first transparent conductive layer is provided with an isolation region, the second transparent conductive layer is not provided with an isolation region, and the first transparent conductive layer is provided with at least two first conductive leads. The first conductive leads are electrically connected to the mutually non-conductive regions on the first transparent conductive layer, and simultaneously, the first conductive leads are electrically connected to the corresponding electrodes of a first power supply. The first power supply is an AC power supply, so as to adjust the connection state between the first power supply and the first transparent conductive layer by controlling the switch of the first power supply, thereby realizing the dimming state of the light control layer corresponding to the first transparent conductive layer. For example, in Figure 1, the first transparent conductive layer 2 is provided with three electrically non-conductive isolation areas 7, dividing the first transparent conductive layer 2 into regions A, B, C, and D that are electrically non-conductive to each other. Regions A, B, C, and D are all electrically connected to first conductive leads 6 and are all connected to a power source. If switch 1 is turned on and switch 2 and switch 3 are turned off, the dimming areas of the light-controlling layer corresponding to regions A and B are in a bright state, while the other regions are in a dark state. If switch 2 is turned on and switch 1 and switch 3 are turned off, the dimming areas of the light-controlling layer corresponding to regions C and A are in a bright state, while the other regions are in a dark state. If switch 3 is turned on and switch 1 and switch 2 are turned off, the dimming areas of the light-controlling layer corresponding to regions A and D are in a bright state, while the other regions are in a dark state. If switch 1 is turned on and switch 2 and switch 3 are turned on, the dimming areas of the light-controlling layer corresponding to regions A, B, C, and D are in a bright state. The first transparent conductive layer 2 provided in this application can also be divided into mutually non-conductive regions as shown in Figure 2. That is, the isolation region 7 is divided into two parts in both the long side direction and the short side direction of the first transparent conductive layer, namely region A, region B, region C and region D. First conductive leads 6 are respectively provided in region A, region B, region C and region D, and then electrically connected to the corresponding electrodes of the first power supply as needed.

[0094] Similarly, if the second transparent conductive layer has an isolation area, then the first transparent conductive layer does not have an isolation area, and the second transparent conductive layer has at least two first conductive leads. The first conductive leads are electrically connected to areas on the second transparent conductive layer that are not electrically connected to each other. At the same time, the first conductive leads are electrically connected to the corresponding electrodes of the first power supply. The first power supply is an AC power supply, so as to control the connection state between the first power supply and the second transparent conductive layer by controlling the switch of the first power supply, thereby realizing the dimming state of the light control layer corresponding to the second transparent conductive layer.

[0095] As described above, the first transparent conductive layer or the second transparent conductive layer is provided with an isolation area, and the corresponding first transparent conductive layer or the second transparent conductive layer is provided with a first conductive lead, thereby realizing the dimming of the dimming area of ​​the light control layer corresponding to the transparent conductive layer.

[0096] This application divides the first or second transparent conductive layer into at least two electrically non-conductive regions by setting isolation areas on the first or second transparent conductive layer. This makes it possible to set the first conductive lead only on the first or second transparent conductive layer, eliminating the step of flipping the dimming film in order to set the conductive leads on the first and second transparent conductive layers respectively during the dimming film production process. This improves production efficiency and reduces product defect rate.

[0097] Furthermore, in this application, the first transparent conductive layer has an isolation region, and the second transparent conductive layer has at least two second conductive leads electrically connected to the second transparent conductive layer; or, the second transparent conductive layer has an isolation region, and the first transparent conductive layer has at least two second conductive leads electrically connected to the first transparent conductive layer. The second conductive leads are electrically connected to corresponding electrodes of a second power source, which is either an AC or DC power source. The heating of the corresponding transparent conductive layer is controlled by switching the second power source on and off.

[0098] In the dimming film provided in this application, both the first power source and the second power source are power sources well known to those skilled in the art. This application does not impose any special restrictions on them, and any conventional power source used in dimming films well known to those skilled in the art is acceptable.

[0099] In this application, the first conductive lead and the second conductive lead are not particularly limited, and can independently include at least one of metal wires, metal conductive mesh, and flexible printed circuit boards (FPC); in some specific embodiments, the first conductive lead and the second conductive lead are independently selected from metal wires, metal conductive mesh, or flexible printed circuit boards (FPC). The method for setting conductive leads on the transparent conductive layer is not particularly limited in this application, and any conventional method well known to those skilled in the art is acceptable.

[0100] In this application, the width of the isolation region is 1 μm to 1 mm, specifically, the width of the isolation region is 2 μm to 500 μm, specifically, the width of the isolation region is 10 to 100 μm, and more specifically, the width of the isolation region is 30 to 80 μm. The number of isolation regions on the first or second transparent conductive layer is not particularly limited in this application; it can be one, two, or three. The shape of the isolation region is not particularly limited in this application; it can include at least one of a straight line, a curve, and a broken line, specifically selected from one of a straight line, a curve, and a broken line; in some embodiments, the isolation region is selected as a straight line. The shape of the isolation region can be a closed curve or a non-closed curve, and can also be a closed broken line or a non-closed broken line.

[0101] Furthermore, the isolation region is formed by etching the first transparent conductive layer or the second transparent conductive layer. The etching method includes one or more of ion beam etching (IBE), deep silicon etching (DRIE), reactive ion etching (RIE), focused ion beam etching (FIB), inductively coupled plasma (ICP) etching, microwave plasma etching, external laser etching, internal laser etching, and chemical etching; specifically, the etching method is selected from one of ion beam etching (IBE), deep silicon etching (DRIE), reactive ion etching (RIE), focused ion beam etching (FIB), inductively coupled plasma (ICP) etching, microwave plasma etching, external laser etching, internal laser etching, and chemical etching; more specifically, the etching method is selected from external laser etching or internal laser etching.

[0102] Furthermore, the laser external etching treats the first transparent substrate and the first transparent conductive layer as a single unit, i.e., the conductive layer is the object of processing. Etching is performed from the side of the first transparent conductive layer toward the direction of the first transparent substrate to form a dividing line. The dividing line does not reach or penetrate the first transparent substrate. This dividing line region is referred to as an isolation region in this invention. The isolation region divides the first transparent conductive layer into at least two regions that are electrically non-conductive. These at least two regions are referred to as electrically non-conductive regions in this invention. And / or, the second transparent substrate and the second transparent conductive layer are treated as a single unit. Etching is performed from the side of the second transparent conductive layer toward the direction of the second transparent substrate to form a dividing line. The dividing line does not reach or penetrate the second transparent substrate. This dividing line region is referred to as an isolation region in this invention. The isolation region divides the second transparent conductive layer into at least two regions that are electrically non-conductive. These at least two regions are referred to as electrically non-conductive regions in this invention.

[0103] Furthermore, the laser etching process involves etching dividing lines from the first transparent substrate side towards the first transparent conductive layer side, using the entire dimming film as a whole. The dividing lines penetrate the first transparent conductive layer but do not reach or penetrate the second transparent substrate. This dividing line region is referred to as an isolation region in this invention. The isolation region divides the first transparent conductive layer into at least two electrically non-conductive regions, which are respectively referred to as electrically non-conductive regions in this invention. Alternatively, dividing lines can be etched from the second transparent substrate side towards the second transparent conductive layer side. The dividing lines penetrate the second transparent conductive layer but do not reach or penetrate the first transparent substrate. This dividing line region is referred to as an isolation region in this invention. The isolation region divides the second transparent conductive layer into at least two electrically non-conductive regions, which are respectively referred to as electrically non-conductive regions in this invention.

[0104] The basic principle of laser internal etching is to focus a high-beam-quality, low-power laser (typically an ultraviolet laser or fiber laser) onto an extremely small spot, creating a high power density at that spot. This spot is positioned within a transparent conductive layer, causing the conductive layer at the spot to heat up instantaneously, while the transparent substrate and the conductive layer outside the spot remain unheated. This generates significant stress between the conductive layer at the spot and the transparent substrate / conductive layer outside the spot, inducing delamination and peeling of the conductive layer at the spot, forming an isolation zone. This prevents the conductive layers on either side of the isolation zone from conducting electricity. Laser non-contact processing offers high flexibility, high speed, no noise, a small heat-affected zone, and the ability to focus to an extremely small spot at the laser wavelength level. It etches the transparent conductive layer through a transparent substrate with a dimming film along a predetermined path, achieving a carbon-free "cold processing" effect. In some specific embodiments, an adhesive layer is provided near the end of the first transparent conductive layer and / or the second conductive layer, the adhesive layer being made of at least one of epoxy resin, polyurethane, polyimide resin, polystyrene resin, acrylic resin, modified acrylic resin, or silicone resin.

[0105] Furthermore, this application can also introduce conductive leads on the electrically conductive transparent conductive layer, so that the dimming film has both dimming and heating functions. Specifically, this application also provides a dimming film, including:

[0106] A first transparent substrate, a second transparent substrate, and a light-controlling layer disposed between the first transparent substrate and the second transparent substrate;

[0107] A light-adjusting transparent conductive layer is disposed between the first transparent substrate and the light-controlling layer, and a heating transparent conductive layer is disposed between the second transparent substrate and the light-controlling layer;

[0108] The dimming transparent conductive layer is provided with an isolation region, which divides the dimming transparent conductive layer into at least two regions that are not electrically conductive to each other.

[0109] The heating transparent conductive layer is provided with an isolation area, and the heating transparent conductive layer is still electrically conductive;

[0110] At least two first conductive leads are provided on the dimming transparent conductive layer with the isolation area. The first conductive leads are electrically connected to areas on the dimming transparent conductive layer that are not electrically connected to each other.

[0111] At least two second conductive leads are provided on the heating transparent conductive layer with the isolation area, and the second conductive leads are electrically connected to the heating transparent conductive layer.

[0112] In the dimming film provided in this application, the arrangement of the isolation region and the arrangement of the first conductive lead in the dimming transparent conductive layer are the same as those in the dimming film described above, and will not be repeated here.

[0113] One of the transparent conductive layers of this dimming film serves as a heating transparent conductive layer and also has an isolation region, but the heating transparent conductive layer is still electrically conductive. On the heating transparent conductive layer, the parts of the heating transparent conductive layer divided by the isolation region can be electrically non-conductive to each other, as shown in Figure 4. The isolation region 7 divides the heating transparent conductive layer 4 into electrically non-conductive regions A and B, but regions A and B are electrically connected by wires, so in essence, regions A and B are still electrically conductive. On the heating transparent conductive layer, the parts of the heating transparent conductive layer divided by the isolation region can be electrically non-conductive to each other, as shown in Figure 4, except that there are no wires as in Figure 4. However, in order to achieve the heating function, at least two second conductive leads need to be set in regions A and B respectively, which can be connected to a second power supply to achieve the heating function of regions A and B. If no second conductive leads are set in regions A or B, the corresponding regions will not have a heating function. The heating transparent conductive layer in Figure 3 has an isolation area. Judging from the way the isolation area is set, the heating transparent conductive layer is also electrically conductive.

[0114] Furthermore, the dimming transparent conductive layer described in this application is provided with an isolation region, which divides the dimming transparent conductive layer into at least two regions that are not electrically conductive to each other. The heating transparent conductive layer is provided with an isolation region, but the heating transparent conductive layer is still electrically conductive. At least two second conductive leads are provided on the heating transparent conductive layer, and the second conductive leads are electrically connected to the heating transparent conductive layer. The second conductive leads are electrically connected to the corresponding electrodes of a second power supply, which is an AC power supply or a DC power supply. The heating of the corresponding transparent conductive layer is controlled by switching the second power supply on or off.

[0115] Furthermore, this application also provides a dimming glass, comprising:

[0116] A first transparent substrate, a second transparent substrate, and a dimming film disposed between the first transparent substrate and the second transparent substrate;

[0117] A first adhesive layer is disposed between the first transparent substrate and the dimming film, and a second adhesive layer is disposed between the second transparent substrate and the dimming film;

[0118] The dimming film is the dimming film described in the above-mentioned scheme.

[0119] Figure 5 shows a schematic diagram of the structure of the dimming glass of this application, wherein 1 is a first transparent substrate, 2 is a first transparent conductive layer, 3 is a light-controlling layer, 4 is a second transparent conductive layer, 5 is a second transparent substrate, 6 is a first conductive lead, 7 is an isolation area, 12 is a second conductive lead, 8 is a first transparent substrate, 9 is a second transparent substrate, 10 is a first interlayer, and 11 is a second interlayer; in some specific embodiments, 2 is a dimming transparent conductive layer and 4 is a heating transparent conductive layer.

[0120] In the aforementioned dimming glass of this application, there are no particular limitations on the first transparent substrate and the second transparent substrate, which can be known to those skilled in the art. For example, the first transparent substrate is selected from one or two of transparent glass plates and transparent plastic sheets, and the second transparent substrate is selected from one or two of transparent glass plates and transparent plastic sheets. Specifically, the first transparent substrate is selected from a transparent glass plate or a transparent plastic sheet, and the second transparent substrate is selected from a transparent glass plate or a transparent plastic sheet. More specifically, the first transparent substrate and the second transparent substrate can be ordinary glass such as inorganic glass or organic glass, or functional glass such as UV blocking glass, IR blocking glass, Low-E glass, tempered glass, or antibacterial glass, etc., or can be selected from colored glass such as gray glass or brown glass. Similarly, the first and second adhesive layers are well known to those skilled in the art, and this application does not impose any special limitations on them. For example, the first adhesive layer can be an EVA film, a TPU film, a PVB film, or a functional film, such as a UV-blocking EVA film, a UV-blocking TPU film, a UV-blocking PVB film, etc. It can also be a film with a certain color, such as a gray EVA film, a gray TPU film, a gray PVB film, etc.

[0121] Furthermore, this application also provides a method for preparing smart glass, including:

[0122] After stacking and placing the first transparent substrate, the first interlayer, the dimming film, the second interlayer, and the second transparent substrate, the interlayer is laminated to obtain dimming glass.

[0123] In the process of preparing smart glass, the lamination process is a well-known operation method among those skilled in the art. This application does not impose any particular limitation on its specific implementation. Lamination can be carried out in a laminator, or in a high-pressure autoclave or lamination box / furnace, etc. In this application, the lamination process temperature is 90-140℃ and the pressure is 0.1-1.5MPa. Specifically, the lamination process temperature is 110-130℃ and the pressure is 0.5-1.0MPa. The lamination equipment can be a laminator, a high-pressure autoclave, or a lamination box / furnace.

[0124] Furthermore, this application also provides a dimming glass article prepared from the above-mentioned dimming glass.

[0125] Specifically, the dimming glass products are automotive window glass, panoramic glass, or glass curtain walls.

[0126] The dimming film provided in this application, by setting an isolation region on the transparent conductive layer, divides the transparent conductive layer into at least two regions that are electrically non-conductive to each other, and sets a first conductive lead on the electrically non-conductive region to introduce an external power supply, changes the current flow and electric field distribution inside the dimming film, and can selectively dim as needed.

[0127] Furthermore, this application also provides a dimming film, which introduces an external power supply through a second conductive lead on an electrically conductive transparent conductive layer, thereby changing the current flow and electric field distribution inside the dimming film, so that the resulting dimming film has both dimming and heating functions.

[0128] Furthermore, this application also provides a dimming glass, which includes the above-mentioned dimming film, so that the dimming glass can selectively dim or heat as needed; on the other hand, the dimming glass provided by this application can also have dual functions of dimming and heating, which can not only ensure that the dimming function of the dimming glass operates normally in a cold climate, but also enable the dimming glass to achieve defrosting and snow removal functions.

[0129] The dimming film provided in this application introduces an isolation region on the transparent conductive layer, altering the internal circuit layout of the dimming film. This allows conductive leads to be mounted on the same conductive film layer, eliminating the dimming film flipping step in the production process and improving production efficiency, while other production processes remain unchanged. Using the technical solution of this invention simplifies the manufacturing steps of the conductive leads and simultaneously improves the yield rate of the dimming film products.

[0130] To further understand the present invention, the dimming film and dimming glass provided by the present invention will be described in detail below with reference to the embodiments. The scope of protection of the present invention is not limited by the following embodiments.

[0131] Terminology Explanation

[0132] In this invention, the following terms have the meanings defined as follows:

[0133] Transparent conductive film: a composite material consisting of a transparent substrate and a transparent conductive layer.

[0134] Regions that are not electrically conductive to each other: Multiple regions separated by isolation zones, where current cannot flow between them.

[0135] Electrical connection: A connection made physically by a conductor, in which current can flow; if a switching device is installed in the circuit, the connection is non-electrical when the switching device is in a closed state, and electrical when the switching device is in a connected state.

[0136] In this invention, the concepts of the first transparent substrate, the second transparent substrate, the first transparent conductive layer, and the second transparent conductive layer only indicate the relative relationship between the two, and are not limiting conditions. They do not necessarily have to be a first and second relationship, but can also be an orientation relationship such as up, down, front, back, left, right, etc.

[0137] Example 1

[0138] A heatable dimming film includes: a first transparent substrate, a dimming transparent conductive layer, a light-controlling layer, a heating transparent conductive layer, and a second transparent substrate;

[0139] Among them, the first transparent substrate and the second transparent substrate are PET, the dimming transparent conductive layer is an ITO conductive layer, the light control layer is a suspended particle light control layer, and the heating transparent conductive layer is an ITO conductive layer;

[0140] The dimming transparent conductive layer is internally etched using a 355nm, 50kHz nanosecond laser pulse. An isolation region is fabricated on the dimming transparent conductive layer as shown in Figure 6, dividing it into regions A and B. First conductive leads are drawn from regions A and B respectively. The conductive leads (conductive copper strips) are adhered to the dimming transparent conductive layer using conductive silver paste and conductive adhesive, respectively, and then dried. Second conductive leads are fabricated on the heating transparent conductive layer as shown in Figure 7. The conductive leads (conductive copper strips) are adhered to the transparent conductive layer using conductive silver paste and conductive adhesive, respectively, and then dried. The dimming film containing the conductive leads is shown in Figure 8. According to the circuit connection method in Figure 9, the first conductive lead from the dimming transparent conductive layer is connected to switch 1 and the first power supply. The second conductive lead from the heating transparent conductive layer is connected to switch 2 and the second power supply. The first power supply is 110V (RMS), 60Hz AC, and the second power supply is 50V DC.

[0141] When switch 1 and switch 2 are connected to the circuit, an electric field is formed in the dimming transparent conductive layer, which enables dimming. When the transparent conductive layer is heated, current flows through it, which can heat the dimming film.

[0142] When switch 1 disconnects the circuit and switch 2 connects the circuit, current flows through the heated transparent conductive layer, which can only heat the dimming film.

[0143] When switch 1 connects the circuit and switch 2 disconnects the circuit, an electric field is formed in the dimming transparent conductive layer, which can only dim the light.

[0144] Example 2

[0145] The circuit is basically the same as in Example 1, except that: according to the circuit connection method in Figure 10, the first conductive lead is led out from the dimming transparent conductive layer, and the second conductive lead is led out from the heating transparent conductive layer. The first conductive lead is connected to switch 1 and switch 3, and the second conductive lead is connected to switch 2 and switch 4. After the two are connected, they are connected to the power supply, which is 60V (RMS) and 60Hz AC.

[0146] When switch 1, switch 2, switch 3, and switch 4 are connected to the circuit, an electric field is formed in the dimming transparent conductive layer, which enables dimming. When the transparent conductive layer is heated, current flows through it, which can heat the dimming film.

[0147] When switch 1 is on the circuit, switch 2 is on the circuit, switch 3 is off the circuit, and switch 4 is off the circuit, the circuit cannot be dimmed or heated.

[0148] When switch 1 is off the circuit, switch 2 is off the circuit, switch 3 is on the circuit, and switch 4 is on the circuit, the circuit cannot be dimmed or heated.

[0149] When switch 1 is off the circuit, switch 2 is on the circuit, switch 3 is off the circuit, and switch 4 is on the circuit, current flows through the heating transparent conductive layer, which can only heat the dimming film.

[0150] When switch 1 is on the circuit, switch 2 is off the circuit, switch 3 is on the circuit, and switch 4 is off the circuit, an electric field is formed in the dimming transparent conductive layer, which can only dim the light.

[0151] When switch 1 is connected to the circuit, switch 2 is connected to the circuit, switch 3 is disconnected from the circuit, and switch 4 is connected to the circuit, an electric field is formed in region A of the dimming transparent conductive layer, and the light control layer corresponding to region A can dim the light. When the transparent conductive layer is heated, current flows through it, which can heat the dimming film.

[0152] When switch 1 is off the circuit, switch 2 is on the circuit, switch 3 is on the circuit, and switch 4 is on the circuit, an electric field is formed in region B of the dimming transparent conductive layer, and the light control layer corresponding to region B can dim the light. When the transparent conductive layer is heated, current flows through it, which can heat the dimming film.

[0153] When switch 1 is connected to the circuit, switch 2 is connected to the circuit, switch 3 is connected to the circuit, and switch 4 is disconnected from the circuit, an electric field is formed in region B of the dimming transparent conductive layer, and the light control layer corresponding to region B can dim the light. When the transparent conductive layer is heated, no current passes through it, and the dimming film cannot be heated.

[0154] When switch 1 is on the circuit, switch 2 is off the circuit, switch 3 is on the circuit, and switch 4 is on the circuit, an electric field is formed in region A of the dimming transparent conductive layer, and the light control layer corresponding to region A can dim the light. When the transparent conductive layer is heated, no current passes through it, and the dimming film cannot be heated.

[0155] When switch 1 is on the circuit, switch 2 is off the circuit, switch 3 is off the circuit, and switch 4 is on the circuit, an electric field is formed in region A of the dimming transparent conductive layer, and the light control layer corresponding to region A can dim the light. When the transparent conductive layer is heated, no current passes through it, so the dimming film cannot be heated.

[0156] When switch 1 is off the circuit, switch 2 is on the circuit, switch 3 is on the circuit, and switch 4 is off the circuit, an electric field is formed in region B of the dimming transparent conductive layer, and the light control layer corresponding to region B can dim the light. When the transparent conductive layer is heated, no current passes through it, so the dimming film cannot be heated.

[0157] Example 3

[0158] A heatable dimming film includes: a first transparent substrate, a dimming transparent conductive layer, a light-controlling layer, a heating transparent conductive layer, and a second transparent substrate;

[0159] Among them, the first transparent substrate and the second transparent substrate are PET, the dimming transparent conductive layer is an ITO conductive layer, the light control layer is a polymer-dispersed liquid crystal dimming film, and the heating transparent conductive layer is an ITO conductive layer;

[0160] The dimming transparent conductive layer is internally etched using a nanosecond laser pulse with a wavelength of 355nm and a frequency of 50kHz. An isolation region on the dimming transparent conductive layer is fabricated according to Figure 11, dividing the layer into regions A, B, C, and D. An isolation region on the heating transparent conductive layer is fabricated according to Figure 12, but it does not penetrate the heating transparent conductive layer. A second conductive lead 12 is led out from the heating transparent conductive layer. Following the circuit connection method shown in Figure 13, first conductive leads 6 are led out from regions A, B, C, and D of the dimming transparent conductive layer. The conductive lead 6 in region A is connected to switch 1, and the conductive lead 6 in region D is connected to switch 2, and then connected to a power supply. A second conductive lead 12 is led out from the heating transparent conductive layer, connected to switch 3, and then connected to a power supply of 50V (RMS), 60Hz AC.

[0161] When switch 1, switch 2, and switch 3 are connected to the circuit, an electric field is formed in regions A, B, C, and D of the dimming transparent conductive layer. The corresponding light control layers in regions A, B, C, and D can dim the light. When the transparent conductive layer is heated, current flows through it, which can heat the dimming film.

[0162] When switch 1 is off the circuit, switch 2 is off the circuit, and switch 3 is on the circuit, current flows through the heating transparent conductive layer, which can only heat the dimming film.

[0163] When switch 1 is connected to the circuit, switch 2 is connected to the circuit, and switch 3 is disconnected from the circuit, an electric field is formed in regions A, B, C, and D of the dimming transparent conductive layer, and the light control layer corresponding to regions A, B, C, and D can dim;

[0164] When switch 1 is on the circuit, switch 2 is off the circuit, and switch 3 is on the circuit, an electric field is formed in regions A, B, and C of the dimming transparent conductive layer. The light control layer corresponding to regions A, B, and C can dim the light. When the transparent conductive layer is heated, current flows through it, which heats the dimming film.

[0165] When switch 1 disconnects the circuit, switch 2 connects the circuit, and switch 3 connects the circuit, an electric field is formed in regions B, C, and D of the dimming transparent conductive layer. The corresponding light control layers in regions B, C, and D can dim the light. When the transparent conductive layer is heated, current flows through it, heating the dimming film.

[0166] Example 4: Preparation of a dimming film

[0167] Preparation of light-controlling particles:

[0168] Add 30g of isoamyl acetate solution containing 21.2wt% nitrocellulose (SS1 / 4sec), 6g of I2, 70g of isoamyl acetate, 4g of anhydrous CaI2, and 4g of titanium dioxide (P25) to a 250mL three-necked round-bottom glass flask, and heat to 42℃. After the I2 dissolves, add 6g of anhydrous methanol, 0.8g of distilled water, and 4g of 2,5-pyrazine dicarboxylic acid dihydrate to the flask, and heat and stir at 42℃ for 4 hours, then allow to cool naturally. Centrifuge the resulting reaction solution at 1350G for 0.5h to remove large particles, then centrifuge the supernatant at 18000G for 5h, discard the supernatant, and obtain the light-controlled particles.

[0169] Preparation of polymer matrix precursors:

[0170] Dissolve 2.7 g of trisilylhydroxyethyl-POSS in 190 mL of heptane to prepare a POSS solution. Add 54 g of hydroxyl-terminated dimethyldiphenyl polysiloxane and 190 mL of the above POSS solution to a 500 mL three-necked round-bottom glass flask. Connect a water separator to a condenser on one side of the three-necked round-bottom glass flask, install a mechanical stirrer in the middle, and place a thermometer on the other side. Heat the solution in the three-necked round-bottom glass flask to reflux for 30 min. When a small amount of water appears in the water separator, add a catalyst solution of stannous octoate (0.13 g of stannous octoate dissolved in 10 mL of heptane). Then add dropwise a mixture of 3 g of hydrolyzed acryloyloxypropyltrimethoxysilane and 1.8 g of hydrolyzed glycidyltrimethoxysilane for about 5 minutes. Then the condensation reaction is carried out for 5 hours, after which 30 mL of trimethylmethoxysilane is immediately added as a reaction terminator; the reaction is terminated for 2 hours, and then rapidly cooled to room temperature. 50 mL of ethanol and the cooled reaction solution were mixed and stirred in a 1 L beaker. The reaction flask was then rinsed with 30 mL of heptane, and the rinse water was poured into the beaker. After thorough mixing, 200 mL of methanol was added and the mixture was stirred for 15 min. The resulting mixture was poured into a 1 L separatory funnel and allowed to stand for several hours until separation occurred. The lower clear layer was collected and rotary evaporated at 70 °C to obtain the polymer matrix precursor.

[0171] Preparation of light-controlling layer matrix emulsion:

[0172] 0.1g of photoinitiator 819, 3.0g of photocontrol particles, 26.9g of suspension medium (dioctyl terephthalate), and 70.0g of polymer matrix precursor were mixed evenly to obtain a light-control layer matrix emulsion.

[0173] The suspended particle light-controlling layer matrix emulsion was coated onto an ITO / PET transparent conductive film using a roll-to-roll automated coating machine. Then, another ITO transparent conductive film was deposited on top of the wet film containing the light-controlling layer matrix emulsion, resulting in a wet film containing the light-controlling layer. The film was cured for 1 minute in a nitrogen atmosphere using a UV curing oven at a UV power of 700 W / m. 2 .

[0174] This invention uses a 355nm, 50kHz nanosecond laser pulse to internally etch the dimming film. A 50μm wide isolation region is formed in the first transparent conductive layer (see Figure 14), resulting in two electrically non-conductive regions, A and B. Conductive silver paste and conductive adhesive are applied to localized areas near the edges of the two regions in the etched first transparent conductive layer. Two conductive leads (conductive copper strips) are then adhered to the conductive silver paste and conductive adhesive, respectively, and dried (see Figure 15). This yields the dimming film. The conductive leads are electrically connected to a power source via wires. The light transmission state of the dimming film can be controlled by adjusting the voltage applied between the two conductive leads.

[0175] A schematic diagram of the cross-sectional structure of the dimming film is shown in Figure 20.

[0176] Generally, as shown in Figure 15, the dimming film described in this solution contains two conductive leads electrically connected to mutually non-conductive regions separated by an isolation zone in the first transparent conductive layer. The relative positions of the conductive leads are not specifically required. Alternatively, more than two conductive leads can be provided, electrically connected to mutually non-conductive regions separated by an isolation zone in the same transparent conductive layer, as needed.

[0177] Example 5: Preparation of a dimming film

[0178] Similar to Example 4, the difference is that the isolation region consists of two diagonal straight lines running from the upper right to the lower left, creating three irregular, electrically non-conductive regions, A, B, and C. The width of the isolation region is 100 μm, as shown in Figure 16.

[0179] The light transmission state of the dimming film can be controlled by electrically connecting the conductive leads to the power supply through wires and adjusting the voltage applied between the three conductive leads. In this embodiment, the power supply is 110V, 60Hz AC.

[0180] If switch 1 connects the circuit and switch 2 disconnects the circuit, the dimming films corresponding to areas A and B will be in a bright state, and the dimming film corresponding to area C will be in a dark state.

[0181] If switch 1 disconnects the circuit and switch 2 connects the circuit, then the dimming films corresponding to areas A and C will be in a bright state, and the dimming film corresponding to area B will be in a dark state.

[0182] If switch 1 turns on the circuit and switch 2 turns on the circuit, the dimming films corresponding to areas A, B, and C will be in the bright state.

[0183] If switch 1 disconnects the circuit and switch 2 disconnects the circuit, the dimming films corresponding to areas A, B, and C will be in a dark state.

[0184] Example 6: Preparation of a dimming film

[0185] Similar to Example 4, the difference is that the isolation region consists of two intersecting straight lines in the upper left corner, creating two regular, electrically non-conductive regions, A and B. The width of the isolation region is 20 μm, as shown in Figure 17.

[0186] Example 7: Preparation of a dimming film

[0187] Similar to Example 4, the difference is that the isolation region consists of three straight lines from top to bottom, creating four regularly spaced, electrically non-conductive regions A, B, C, and D, on which four conductive leads are installed. The width of the isolation region is 30 μm, as shown in Figure 18.

[0188] Example 8: Preparation of a dimming film

[0189] Similar to Example 4, the difference is that a closed isolation area is created 3mm from the edge of the dimming film, as shown in Figure 19.

[0190] Generally, the number of conductive leads corresponds to the number of electrically non-conductive regions separated by the isolation zone. However, in some cases, certain electrically non-conductive regions separated by the isolation zone may not have conductive leads, simply because these regions do not require dimming, as shown in Figure 19. Figure 19 illustrates how the isolation zone divides the first transparent conductive layer into three electrically non-conductive regions: region A, region B, and region C. Region C is located at the edge of the conductive layer. Only regions A and B are electrically connected to conductive leads; region C is not connected. This means that, for product requirements, conductive leads may not be provided in certain electrically non-conductive regions simply because these regions do not require dimming functionality. The number of regions without conductive leads can be varied according to actual needs.

[0191] Example 9: Preparation of Smart Glass

[0192] Ordinary tempered glass was used as the first and second glass plates, with a width of 2.2m. EVA film was set as the first and second interlayer films. The dimming film prepared in Example 4 was used. The films were stacked and interlayered in an autoclave at a temperature of 110℃, a pressure of 0.5MPa, and a time of 30min to obtain dimming glass. A cross-sectional view is shown in Figure 21.

[0193] The above description of the embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0194] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dimming film, characterized in that, include: A first transparent substrate, a second transparent substrate, and a light-controlling layer disposed between the first transparent substrate and the second transparent substrate; A first transparent conductive layer is disposed between the first transparent substrate and the light control layer, and a second transparent conductive layer is disposed between the second transparent substrate and the light control layer; The first transparent conductive layer is provided with an isolation region, which divides the first transparent conductive layer into at least two regions that are electrically non-conductive to each other; or, the second transparent conductive layer is provided with an isolation region, which divides the second transparent conductive layer into at least two regions that are electrically non-conductive to each other. At least two first conductive leads are provided on the transparent conductive layer with the isolation area. The first conductive leads are electrically connected to areas on the transparent conductive layer that are not electrically connected to each other.

2. The dimming film according to claim 1, characterized in that, The first transparent conductive layer has an isolation area, and the second transparent conductive layer has at least two second conductive leads electrically connected to the second transparent conductive layer; or, the second transparent conductive layer has an isolation area, and the first transparent conductive layer has at least two second conductive leads electrically connected to the first transparent conductive layer.

3. The dimming film according to claim 1 or 2, characterized in that, The first conductive lead is electrically connected to the corresponding electrode of the first power source.

4. The dimming film according to claim 2, characterized in that, The second conductive lead is electrically connected to the corresponding electrode of the second power source.

5. The dimming film according to claim 3, characterized in that, The first power source is an AC power source.

6. The dimming film according to claim 4, characterized in that, The second power source is either an AC power source or a DC power source.

7. The dimming film according to claim 1, characterized in that, The number of the first conductive leads is less than or equal to the number of mutually non-conductive regions in the first or second transparent conductive layer.

8. The dimming film according to claim 1 or 2, characterized in that, The width of the isolation zone is 1μm to 1mm.

9. The dimming film according to claim 1 or 2, characterized in that, The shape of the isolation zone includes at least one of a straight line, a curve, and a broken line.

10. The dimming film according to claim 1 or 2, characterized in that, The isolation zone is formed by etching.

11. The dimming film according to claim 10, characterized in that, The etching methods include one or more of the following: ion beam etching, deep silicon etching, reactive ion etching, focused ion beam etching, inductively coupled plasma etching, microwave plasma etching, external laser etching, internal laser etching, and chemical etching.

12. The dimming film according to claim 11, characterized in that, The etching method is laser internal etching or laser external etching.

13. The dimming film according to claim 1 or 2, characterized in that, The first transparent substrate and the second transparent substrate are transparent plastic sheets; And / or, the first transparent conductive layer and the second transparent conductive layer are each independently selected from one or more of the following: ITO conductive layer, FZO conductive layer, IZO conductive layer, GZO conductive layer, AZO conductive layer, PEDOT conductive layer, nano Ag wire conductive layer, conductive graphene, conductive polymer and nano Cu wire conductive layer; And / or, the light control layer includes at least one of a suspended particle light control layer, a polymer-dispersed liquid crystal light control layer, and an electrochromic light control layer.

14. A dimming film, characterized in that, include: A first transparent substrate, a second transparent substrate, and a light-controlling layer disposed between the first transparent substrate and the second transparent substrate; A light-adjusting transparent conductive layer is disposed between the first transparent substrate and the light-controlling layer, and a heating transparent conductive layer is disposed between the second transparent substrate and the light-controlling layer; The dimming transparent conductive layer is provided with an isolation region, which divides the dimming transparent conductive layer into at least two regions that are not electrically conductive to each other. The heating transparent conductive layer is provided with an isolation area, and the heating transparent conductive layer is still electrically conductive; At least two first conductive leads are provided on the dimming transparent conductive layer with the isolation area. The first conductive leads are electrically connected to areas on the dimming transparent conductive layer that are not electrically connected to each other. At least two second conductive leads are provided on the heating transparent conductive layer with the isolation area, and the second conductive leads are electrically connected to the heating transparent conductive layer.

15. A type of dimming glass, characterized in that, include: A first transparent substrate, a second transparent substrate, and a dimming film disposed between the first transparent substrate and the second transparent substrate, wherein the dimming film is the dimming film according to any one of claims 1 to 14; A first adhesive layer is provided between the first transparent substrate and the dimming film, and a second adhesive layer is provided between the second transparent substrate and the dimming film.

16. The dimming glass according to claim 15, characterized in that, The first transparent substrate and / or the second transparent substrate are independently selected from at least one of transparent glass plate and transparent plastic sheet.

17. The dimming glass according to claim 15, characterized in that, The first adhesive layer and / or the second adhesive layer are independently selected from at least one of PVB film, EVA film, TPU film, functional PVB film, functional EVA film, functional TPU film, colored PVB film, colored EVA film, and colored TPU film.

18. A method for preparing the dimming glass according to any one of claims 15 to 17, comprising the following steps: The dimming glass is obtained by laminating the layers according to the structure of any one of claims 15 to 17.

19. The preparation method according to claim 18, characterized in that, The temperature for the lamination process is 90–140°C.

20. A dimming glass article, prepared from the dimming glass according to any one of claims 15 to 17 or the dimming glass prepared by the preparation method according to any one of claims 18 to 19.

21. The dimming glass article according to claim 20, characterized in that, The dimming glass products are automotive window glass, panoramic glass, or glass curtain walls.

22. A dimming film, characterized in that, The device comprises a first transparent substrate, a first transparent conductive layer, a light-controlling layer, a second transparent conductive layer, a second transparent substrate, and conductive leads, which are stacked sequentially. The first or second transparent conductive layer has at least one isolation region, which divides the first or second transparent conductive layer into at least two regions that are not electrically connected to each other. The conductive leads are electrically connected to the first or second transparent conductive layer with the isolation region, and the conductive leads are disposed on the same transparent conductive layer.

23. The dimming film according to claim 22, characterized in that, There is no electrical conductivity between any region of the first transparent conductive layer and the second transparent conductive layer.

24. The dimming film according to claim 22, characterized in that, The conductive leads are at least two in number, and are electrically connected to mutually non-conductive regions on the same layer of the first transparent conductive layer or the second transparent conductive layer where the isolation zone is set.

25. The dimming film according to claim 22, characterized in that, The conductive lead is electrically connected to the corresponding electrode of the power supply via a wire.

26. The dimming film according to claim 22, characterized in that, The conductive lead includes at least one of a metal wire, a metal conductive mesh, and a flexible printed circuit board (FPC).

27. The dimming film according to claim 22, characterized in that, The width of the isolation zone is 1μm to 1mm.

28. The dimming film according to claim 22, characterized in that, The shape of the isolation zone is either a straight line or a curve, or a combination thereof.

29. The dimming film according to claim 22, characterized in that, The isolation region is formed by etching the first transparent conductive layer or the second transparent conductive layer.

30. The dimming film according to claim 29, characterized in that, The etching is one or more of the following: ion beam etching (IBE), deep silicon etching (DRIE), reactive ion etching (RIE), focused ion beam etching (FIB), inductively coupled plasma (ICP) etching, microwave plasma etching, external laser etching, internal laser etching, or chemical etching.

31. The dimming film according to claim 29, characterized in that, The etching is laser external etching and / or laser internal etching.

32. The dimming film according to claim 22, characterized in that, An adhesive layer is applied to the surface of the first transparent conductive layer and / or the second transparent conductive layer facing the light-controlling layer; the adhesive layer material includes at least one of epoxy resin, polyurethane, polyimide resin, polystyrene resin, acrylic resin, modified acrylic resin, or silicone resin.

33. The dimming film according to claim 22, characterized in that, The light-controlling layer is selected from at least one of the following: a suspended particle light-controlling layer, a polymer-dispersed liquid crystal light-controlling layer, or an electrochromic light-controlling layer.

34. The dimming film according to claim 22, characterized in that, The first transparent substrate and the second transparent substrate are glass plates.

35. The dimming film according to claim 22, characterized in that, The first transparent substrate and the second transparent substrate are transparent plastic sheets.

36. The dimming film according to claim 22, characterized in that, The first transparent conductive layer and the second transparent conductive layer are each independently selected from at least one of ITO conductive layer, FZO conductive layer, IZO conductive layer, GZO conductive layer, AZO conductive layer, PEDOT conductive layer, nano Ag wire conductive layer, conductive graphene and nano Cu wire conductive layer.

37. A type of dimming glass, characterized in that, It includes a first glass plate and a second glass plate, and a dimming film as described in any one of claims 22 to 36 disposed between the first glass plate and the second glass plate.

38. The dimming glass according to claim 37, characterized in that, A first interlayer is provided between the first glass plate and the dimming film, and / or a second interlayer is provided between the second glass plate and the dimming film.

39. The use of a dimming film according to any one of claims 22 to 36 or a dimming glass according to any one of claims 37 to 38 in one or more of automotive window glass, panoramic glass, and glass curtain walls.

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