A dimming glass, a preparation method thereof and a vehicle

Abstract

The embodiment of the present disclosure provides a kind of light control glass, comprising: the first toughened glass layer of sequentially superimposed, first adhesive layer, first substrate, second substrate, second adhesive layer, second toughened glass layer, support spacer between the first substrate and the second substrate;The raw material of the first adhesive layer and the raw material of the second adhesive layer are in molten state under the condition that temperature is 130-150 degrees, pressure is 12-14bar, and solidify after cooling;It further includes edge sealing structure;The edge sealing structure is arranged at the periphery of the first substrate and the second substrate, and the edge sealing structure, the first substrate and the second substrate form a gap;The gap is filled with liquid crystal;Liquid crystal filling port is formed on the edge sealing structure;The opening position of the liquid crystal filling port is provided with sealing glue, and the sealing glue seals the opening.

Description

TECHNICAL FIELD

[0001] The embodiment of the present disclosure belongs to the technical field of light-adjustable glass, and particularly relates to a light-adjustable glass and a preparation method and a vehicle thereof. BACKGROUND

[0002] The vehicle window used on a vehicle needs to be double-curved, light in weight, thin in thickness, energy-saving and safe and not easy to break. At present, the vehicle window mainly uses a glass base and an ordinary vehicle window with unadjustable transmittance. SUMMARY

[0003] The embodiment of the present disclosure provides a light-adjustable glass, a preparation method and a vehicle thereof.

[0004] In a first aspect, the embodiment of the present disclosure provides a light-adjustable glass, comprising: a first tempered glass layer, a first bonding layer, a first substrate, a second substrate, a second bonding layer, a second tempered glass layer and a support spacer arranged between the first substrate and the second substrate, which are sequentially stacked; raw materials of the first bonding layer and the second bonding layer are in a molten state under the condition of a temperature of 130-150 degrees and a pressure of 12-14 bar, and are solidified after cooling;

[0005] Further comprising an edge sealing structure; the edge sealing structure is arranged at the periphery of the first substrate and the second substrate, and the edge sealing structure, the first substrate and the second substrate form a gap;

[0006] The edge sealing structure is formed with a liquid crystal filling port; the opening position of the liquid crystal filling port is provided with sealing glue, and the sealing glue seals the opening.

[0007] In some embodiments, the edge sealing structure is an integral structure with the first bonding layer and / or the second bonding layer;

[0008] The edge sealing structure comprises a surrounding part, the surrounding part is in contact with the peripheral edge end surface of the first substrate and the second substrate, and the surrounding part and the first substrate and the second substrate do not overlap on the orthographic projection of the first tempered glass layer.

[0009] In some embodiments, the edge sealing structure further comprises a clamping part, the clamping part is arranged at the periphery of the gap, and is connected with the surrounding part;

[0010] The orthographic projection of the clamping part on the first tempered glass layer overlaps the orthographic projection of the peripheral edge of the first substrate and the second substrate on the first tempered glass layer.

[0011] In some embodiments, the edge sealing structure is located between the first substrate and the second substrate;

[0012] A normal projection of the edge sealing structure on the first tempered glass layer overlaps with a normal projection of the peripheral edges of the first substrate and the second substrate on the first tempered glass layer.

[0013] In some embodiments, the edge sealing structure and the first adhesive layer and the second adhesive layer are made of the same material;

[0014] The material includes polyvinyl butyral or ethylene-vinyl acetate copolymer.

[0015] In some embodiments, the first substrate includes a first flexible substrate and a first orientation film layer stacked in sequence in a direction away from the first adhesive layer;

[0016] The second substrate includes a second orientation film layer and a second flexible substrate stacked in sequence in a direction close to the second adhesive layer;

[0017] The first flexible substrate includes a first flexible substrate and a first electrode layer; the first electrode layer is located on a side of the first flexible substrate close to the first orientation film layer;

[0018] The second flexible substrate includes a second flexible substrate and a second electrode layer; the second electrode layer is located on a side of the second flexible substrate close to the second orientation film layer;

[0019] The support spacer is located between the first orientation film layer and the second orientation film layer.

[0020] In some embodiments, the first flexible substrate and the second flexible substrate respectively extend to the area corresponding to the liquid crystal filling port.

[0021] In some embodiments, the support spacer is also distributed in the area between the first flexible substrate and the second flexible substrate corresponding to the liquid crystal filling port.

[0022] In some embodiments, at least one of the first electrode layer, the second electrode layer, the first orientation film layer, and the second orientation film layer extends to the area corresponding to the liquid crystal filling port.

[0023] In some embodiments, the first flexible substrate has a curvature radius greater than 1800mm when bent in a first direction;

[0024] The first flexible substrate has a curvature radius greater than 2000mm when bent in a second direction;

[0025] The second flexible substrate has a curvature radius greater than 1800mm when bent in the first direction;

[0026] The second flexible substrate has a curvature radius greater than 2000mm when bent in the second direction;

[0027] The first direction and the second direction perpendicularly intersect to form a plane rectangular coordinate system.

[0028] In some embodiments, the transmittance of the first flexible substrate is greater than 80%;

[0029] The transmittance of the second flexible substrate is greater than 80%.

[0030] In some embodiments, the thermal shrinkage of the first flexible substrate along the first direction is less than 0.03%;

[0031] The thermal shrinkage of the first flexible substrate along the second direction is less than 0.03%;

[0032] The thermal shrinkage of the second flexible substrate along the first direction is less than 0.03%;

[0033] The thermal shrinkage of the second flexible substrate along the second direction is less than 0.03%.

[0034] In some embodiments, the thickness of the first flexible substrate ranges from 40 to 200 μm;

[0035] The thickness of the second flexible substrate ranges from 40 to 200 μm.

[0036] In some embodiments, the thickness of the first flexible substrate ranges from 170 to 200 μm;

[0037] The thickness of the second flexible substrate ranges from 170 to 200 μm.

[0038] In some embodiments, the first electrode layer covers the first flexible substrate entirely; and the second electrode layer covers the second flexible substrate entirely.

[0039] Alternatively, the first electrode layer is divided into at least two first sub-regions, and adjacent two first sub-regions are spaced apart from each other; the second electrode layer is divided into at least two second sub-regions, and adjacent two second sub-regions are spaced apart from each other; the first sub-regions and the second sub-regions are in one-to-one correspondence and their orthographic projections on the first flexible substrate coincide.

[0040] In some embodiments, the sheet resistance of the first electrode layer ranges from 20 to 200 Ω / □.

[0041] The sheet resistance of the second electrode layer ranges from 20 to 200 Ω / □.

[0042] In some embodiments, the liquid crystal comprises a dye liquid crystal; and the dye liquid crystal has a temperature resistance range of -40 to 150 degrees.

[0043] In some embodiments, the curing temperature range of the used orientation liquid of the first orientation film layer is 80-150 degrees.

[0044] The curing temperature range of the used orientation liquid of the second orientation film layer is 80-150 degrees.

[0045] In some embodiments, the support spacers are spherical particles.

[0046] The support spacers comprise a spherical body and an outer coating layer, and the outer coating layer is wrapped on the surface of the spherical body.

[0047] The color of the outer coating layer comprises black.

[0048] In some embodiments, the curing temperature range of the used material of the support spacers is 90-120 degrees.

[0049] In a second aspect, the embodiments of the present disclosure further provide a vehicle, wherein the vehicle comprises the above-mentioned light-adjustable glass, and the light-adjustable glass is used as a window of the vehicle.

[0050] In a third aspect, the embodiments of the present disclosure further provide a preparation method of a light-adjustable glass, wherein the method comprises:

[0051] Preparation of a first substrate and a second substrate and support spacers between the first substrate and the second substrate;

[0052] Stacking of a first tempered glass layer, raw materials of a first bonding layer, the first substrate, the support spacers, the second substrate, raw materials of a second bonding layer, and a second tempered glass layer in sequence, and bonding in an autoclave with a temperature of 130-150 degrees and a pressure of 12-14 bar, wherein the raw materials of the first bonding layer and the raw materials of the second bonding layer are in a molten state under the condition of a temperature of 130-150 degrees and a pressure of 12-14 bar, and are solidified after cooling; forming a first bonding layer, a second bonding layer, an edge sealing structure surrounding the periphery of the first substrate and the second substrate, a liquid crystal filling port on the edge sealing structure, and a gap formed by the edge sealing structure, the first substrate, and the second substrate;

[0053] Filling of liquid crystal into the gap through the liquid crystal filling port in a vacuum chamber at room temperature;

[0054] Sealing of the liquid crystal filling port by using sealing glue.

[0055] In some embodiments, the laminating the first tempered glass layer, the first adhesive layer, the first substrate, the support spacer, the second substrate, the second adhesive layer and the second tempered glass layer in sequence and in an autoclave with a temperature of 130-150 degrees and a pressure of 12-14 bar to form a sealing structure surrounding the periphery of the first substrate and the second substrate, a liquid crystal filling port on the sealing structure and a gap formed by the sealing structure, the first substrate and the second substrate, further comprises:

[0056] Before the laminating, an adhesive strip is arranged between the first substrate and the second substrate; the adhesive strip is distributed in the peripheral edge region of the first substrate and the second substrate; and the adhesive strip is disconnected at a position corresponding to the liquid crystal filling port.

[0057] In some embodiments, the adhesive strip and the first adhesive layer and the second adhesive layer are made of the same material.

[0058] The material includes polyvinyl butyral or ethylene-vinyl acetate copolymer.

[0059] In some embodiments, the sealing the liquid crystal filling port with the sealing glue comprises:

[0060] Applying a curing glue at the opening position of the liquid crystal filling port;

[0061] Curing the curing glue by light.

[0062] In some embodiments, the curing glue includes ultraviolet curing glue.

[0063] In some embodiments, the separately preparing the first substrate and the second substrate comprises:

[0064] Arranging a first flexible substrate on a first glass substrate; and arranging a second flexible substrate on a second glass substrate;

[0065] Preparing a first alignment film layer on the side of the first flexible substrate away from the first glass substrate; and preparing a second alignment film layer on the side of the second flexible substrate away from the second glass substrate;

[0066] Preparing a support spacer on the side of the first alignment film layer away from the first flexible substrate;

[0067] Separating the first flexible substrate from the first glass substrate; and separating the second flexible substrate from the second glass substrate.

[0068] In some embodiments, the first tempered glass layer, the first bonding layer, the first substrate, the support spacer, the second substrate, the second bonding layer and the second tempered glass layer are sequentially stacked and laminated in an autoclave at a temperature of 130-150 degrees and a pressure of 12-14 bar, to form a sealing structure surrounding the periphery of the first substrate and the second substrate, a liquid crystal filling port on the sealing structure, and a gap formed by the sealing structure, the first substrate and the second substrate, comprising:

[0069] The distance between the corresponding edges of the first flexible substrate and the first tempered glass layer in the orthographic projection on the first tempered glass layer is 3-5 mm, and the distance between the corresponding edges of the second flexible substrate and the second tempered glass layer in the orthographic projection on the second tempered glass layer is 3-5 mm.

[0070] The stacked film layer structure is placed in a vacuum bag, and the vacuum bag is vacuumized.

[0071] The stacked film layer structure wrapped in the vacuum bag is placed in an autoclave for lamination.

[0072] The process parameters for lamination in the autoclave are as follows: the temperature rising speed is 5℃ / min; the temperature rising time is 20-25 min; the pressure increasing speed is 0.7 bar / min; the temperature is maintained at 130-150 degrees and the pressure is maintained at 12-14 bar for more than 10 min; the cooling time is 30 min; and the pressure relief temperature is less than 50℃.

[0073] In some embodiments, the liquid crystal is filled into the gap through the liquid crystal filling port in the vacuum chamber at room temperature, comprising:

[0074] The vacuum chamber is vacuumized to below 1 pa;

[0075] The laminated film layer structure after lamination is placed on a liquid crystal tank containing liquid crystal, and the liquid crystal filling port of the laminated film layer structure is extended into the liquid crystal in the liquid crystal tank, and the liquid crystal filling port is a capillary tube, so that the liquid crystal is filled into the gap under the action of vacuum capillary suction.

[0076] In some embodiments, the first flexible substrate comprises a first flexible substrate and a first electrode layer formed thereon; and the second flexible substrate comprises a second flexible substrate and a second electrode layer formed thereon.

[0077] The first electrode layer also extends beyond the sealing structure and forms a first binding electrode; and the second electrode layer also extends beyond the sealing structure and forms a second binding electrode.

[0078] The preparation method further comprises: binding the first binding electrode and the second binding electrode with a driving circuit respectively, so that the driving circuit provides driving signals for the first binding electrode and the second binding electrode respectively.

[0079] In some embodiments, the driving circuit is bound with the first binding electrode and the second binding electrode respectively by using an anisotropic conductive adhesive film.

[0080] In some embodiments, the diameter of the conductive particles in the anisotropic conductive adhesive film is greater than 10 μm; the thickness of the anisotropic conductive adhesive film is greater than 20 μm; the temperature during the binding is 200-320 degrees; the pressure during the binding is 2-5 Kgf; and the binding time is 10-20 s.

[0081] In some embodiments, the method further comprises: printing ink on the four peripheral frame areas of the light-adjustable glass.

[0082] The width of the frame area of the printed ink is 5-15 mm. BRIEF DESCRIPTION OF DRAWINGS

[0083] The accompanying drawings are included to provide a further understanding of embodiments of the present disclosure and constitute a part of the specification, which together with the present disclosure serve to explain the present disclosure and do not constitute a limitation of the present disclosure. The above and other features and advantages will become more apparent from the detailed description of the specific examples with reference to the attached drawings, in which:

[0084] Figure 1 It is a schematic diagram of the preparation process of the flexible liquid crystal light-adjustable glass in the disclosed technology.

[0085] Figure 2 It is a structural exploded schematic diagram of the light-adjustable glass in the embodiments of the present disclosure.

[0086] Figure 3 It is a top view of a structure of a light-adjustable glass in the embodiments of the present disclosure.

[0087] Figure 4 It is a structural sectional view of the light-adjustable glass in the embodiments of the present disclosure along the AA sectional line in FIG. 2. Figure 3

[0088] Figure 5 It is another structural sectional view of the light-adjustable glass in the embodiments of the present disclosure along the AA sectional line in FIG. 2. Figure 3

[0089] Figure 6 It is a structural sectional view of the light-adjustable glass in the embodiments of the present disclosure along the CC sectional line in FIG. 2. Figure 3

[0090] Figure 7 It is a top view of a structure of another light-adjustable glass in the embodiments of the present disclosure.​​​

[0091] Figure 8 For the dimming glass edge in the embodiments of this disclosure Figure 7 A structural cross-sectional view of the DD section line.

[0092] Figure 9 For the dimming glass edge in the embodiments of this disclosure Figure 7 A structural cross-sectional view of the EE section line.

[0093] Figure 10 This is a top view showing a partitioning of the first electrode layer and the second electrode layer in an embodiment of this disclosure.

[0094] Figure 11 A top view showing another partition of the first electrode layer and the second electrode layer in an embodiment of this disclosure.

[0095] Figure 12 This is a flowchart of the dimming glass preparation method in the embodiments of this disclosure.

[0096] Figure 13 This is an embodiment of the present disclosure. Figure 4 and Figure 5 A schematic diagram of the structure of medium-dimming glass during its fabrication process.

[0097] Figure 14 This is a temperature and pressure curve of the lamination process in an embodiment of this disclosure.

[0098] Figure 15 This is a schematic diagram showing the distance between the orthographic projections of the corresponding edges of the flexible substrate and the tempered glass layer.

[0099] Figure 16 This is a schematic diagram of the specific process flow for lamination.

[0100] Figure 17 For use in forming Figures 7-9 A top view of the stacked structure of the dimming glass in the middle layer before lamination.

[0101] Figure 18 For along Figure 17 A structural cross-sectional view along the BB section line.

[0102] Figure 19 This is a schematic diagram of liquid crystal injection.

[0103] Figure 20 This is a schematic diagram showing the bonding connection between the bonding electrode and the drive circuit.

[0104] Figure 21 This is a schematic diagram of printing ink on the border area around the dimming glass.

[0105] The attached figures are labeled as follows:

[0106] 1, first toughened glass layer; 2, first bonding layer; 200, first substrate; 3, light adjusting structure; 300, second substrate; 31, first flexible substrate; 311, first flexible base; 312, first electrode layer; 301, first sub-area; 303, first binding electrode; 32, first orientation film layer; 33, support spacer; 34, second orientation film layer; 35, second flexible substrate; 351, second flexible base; 352, second electrode layer; 302, second sub-area; 304, second binding electrode; 4, second bonding layer; 5, second toughened glass layer; 6, liquid crystal; 7, first glass substrate; 8, second glass substrate; 9, liquid crystal tank; 10, liquid crystal filling port; 101, edge sealing structure; 1011, surrounding part; 1012, clamping part; 102, sealing glue; 103, opening; 104, bonding strip; 11, driving circuit; 12, ink; 13, flexible liquid crystal light adjusting layer; 14, glass carrier plate; 15, toughened glass; 16, adhesive film. DETAILED DESCRIPTION

[0107] In order for those skilled in the art to better understand the technical solutions of the embodiments of the present disclosure, the embodiments of the present disclosure will be further described in detail below in combination with the drawings and specific embodiments.

[0108] The embodiments of the present disclosure will be described more fully in the following with reference to the drawings, but the embodiments shown can be embodied in different forms and should not be interpreted as being limited to the embodiments set forth in the present disclosure. On the contrary, the purpose of providing these embodiments is to make the present disclosure thorough and complete, and to enable those skilled in the art to fully understand the scope of the present disclosure.

[0109] The embodiments of the present disclosure are not limited to the embodiments shown in the drawings, but include modifications of configurations formed based on manufacturing processes. Therefore, the regions exemplified in the drawings have a schematic property, and the shape of the regions shown in the drawings exemplifies the specific shape of the regions, but is not intended to be restrictive.

[0110] At present, the proportion of light-adjustable glass used in vehicle windows is small, and the light-adjustable glass currently mainly includes flexible PDLC (Polymer Dispersed Liquid Crystal) light-adjustable glass, flexible EPD (Electrophoretic, E-Paper electrophoretic display technology) light-adjustable glass, flexible ECD (Electron Capture Detector, electrochromic device) light-adjustable glass and rigid liquid crystal light-adjustable glass. Among them, the PDLC light-adjustable glass is commonly used in the field of building in the market, which can realize the switching between transparent and milky white; but due to the liquid crystal characteristics of the PDLC light-adjustable glass, it is difficult to match the milky white color with the vehicle body color of the vehicle, and the haze of the PDLC light-adjustable glass is greater than 10 when it is shaded, so its application in the vehicle field is very limited. The flexible EPD light-adjustable glass is also difficult to meet the vehicle safety standard requirements due to the large haze of the ink particles; the flexible ECD light-adjustable glass is limited by the slow response speed of the EC (electrochromic) material, and the characteristics of second-level response are also difficult to apply in vehicles; although the color, response speed and haze of the rigid liquid crystal light-adjustable glass are relatively consistent with the requirements of vehicles, the rigid glass substrate of the rigid liquid crystal light-adjustable glass is easy to break, and it is difficult to meet the vehicle window fragment standard in the vehicle field and to be well applied due to the consideration of personal safety; in addition, the rigid liquid crystal light-adjustable glass is difficult to meet the requirements in the double-curved spherical surface due to the rigid structure of the internal liquid crystal light-adjustable layer, which cannot be well adapted to the single-curved (i.e. curved in one direction) or double-curved spherical surface shape of the pre-shaped outside tempered glass.

[0111] In addition, flexible liquid crystal light-adjustable glass has also appeared on the market, which is shown in Figure 1 The preparation process of the flexible liquid crystal light-adjustable glass in the disclosed technology is shown in the figure. The manufacturing process is as follows: first, the flexible liquid crystal light-adjustable layer 13 is made, such as the flexible liquid crystal light-adjustable layer 13 is first formed on the glass carrier plate 14, and then the flexible liquid crystal light-adjustable layer 13 is separated from the glass carrier plate 14; then the flexible liquid crystal light-adjustable layer 13 is integrally bonded with the tempered glass 15 through a transparent bonding layer under high temperature and high pressure, and finally the flexible liquid crystal light-adjustable glass with tempered glass 15 protecting the two opposite outer sides of the flexible liquid crystal light-adjustable layer 13 is formed; but due to the high temperature and high pressure in the bonding process, the liquid crystal in the flexible liquid crystal light-adjustable layer 13 is easy to produce bubbles, resulting in product defects, so that the light-adjustable glass is scrapped; and the sample after bonding cannot be analyzed by cutting, that is, when the sample after bonding has a defect, the sample is cut to analyze the defect, and it is difficult to determine the cause of the defect; the yield is difficult to improve, and the product performance is difficult to improve.

[0112] Referring to Figures 2-4 , Figure 2 The structure of the light-adjustable glass in the embodiment of the present disclosure is shown in the exploded view. Figure 3A top view of a structure of the dimming glass in the embodiments of the present disclosure; Figure 4 A top view of a structure of the dimming glass in the embodiments of the present disclosure; Figure 3 In order to solve the above problems of the dimming glass for the vehicle, the dimming glass provided by the embodiments of the present disclosure comprises: a first tempered glass layer 1, a first bonding layer 2, a first substrate 200, a second substrate 300, a second bonding layer 4, a second tempered glass layer 5, and a support spacer 33 arranged between the first substrate 200 and the second substrate 300, which are sequentially stacked; the raw material of the first bonding layer 2 and the raw material of the second bonding layer 4 are in a molten state under the condition of a temperature of 130-150 degrees and a pressure of 12-14 bar, and are solidified after cooling; the dimming glass further comprises a sealing structure 101; the sealing structure 101 is arranged around the periphery of the first substrate 200 and the second substrate 300, and the sealing structure 101, the first substrate 200 and the second substrate 300 form a gap; the gap is filled with liquid crystal 6; the sealing structure 101 is provided with a liquid crystal filling port 10; the opening 103 of the liquid crystal filling port 10 is provided with a sealing glue 102, and the sealing glue 102 seals the opening 103.

[0113] The liquid crystal filling port 10 is a capillary tube, the capillary tube is filled with liquid crystal, and the opening 103 of the capillary tube is sealed by the sealing glue 102. The sealing glue 102 can be a light curing glue, such as ultraviolet curing glue. It should be noted that the sealing glue 102 cannot be made of the same material as the first bonding layer 2 and the second bonding layer 4, because in the present solution, the first substrate 200 and the second substrate 300 are first laminated with the tempered glass layer by the first bonding layer 2 and the second bonding layer 4, then the liquid crystal 6 is filled, and finally the opening 103 of the liquid crystal filling port 10 is sealed, so the sealing process of the sealing glue cannot damage or affect the structure after lamination. Therefore, the sealing glue usually adopts a sealing glue with a curing temperature that does not approach or exceed the lamination temperature.

[0114] In some embodiments, referring to Figure 4 The sealing structure 101 is an integral structure with the first bonding layer 2 and / or the second bonding layer 4; the sealing structure 101 comprises a surrounding part 1011, the surrounding part 1011 is in contact with the peripheral edge end surface of the first substrate 200 and the second substrate 300, and the surrounding part 1011 does not overlap with the normal projection of the first substrate 200 and the second substrate 300 on the first tempered glass layer 1. The peripheral edge end surface of the first substrate 200 and the second substrate 300, except for the opening 103 of the liquid crystal filling port 10, is sealed by the surrounding part 1011 of the sealing structure 101.

[0115] In some embodiments, referring to Figure 5 A top view of a structure of the dimming glass in the embodiments of the present disclosure; Figure 3Another structural cross-sectional view along the AA section line. The sealing structure 101 also includes a clamping portion 1012, which surrounds the periphery of the gap and is connected to the surrounding portion 1011; the orthographic projection of the clamping portion 1012 on the first tempered glass layer 1 overlaps with the orthographic projection of the peripheral edges of the first substrate 200 and the second substrate 300 on the first tempered glass layer 1. Furthermore, the sealing structure 101 extends further between the first substrate 200 and the second substrate 300, thus further sealing the periphery of the first substrate 200 and the second substrate 300.

[0116] In some embodiments, the first substrate 200 includes a first flexible substrate 31 and a first alignment film layer 32 stacked sequentially along a direction Z away from the first adhesive layer 2; the second substrate 300 includes a second alignment film layer 34 and a second flexible substrate 35 stacked sequentially along a direction Z close to the second adhesive layer 4; the first flexible substrate 31 includes a first flexible base 311 and a first electrode layer 312; the first electrode layer 312 is located on the side of the first flexible base 311 close to the first alignment film layer 32; the second flexible substrate 35 includes a second flexible base 351 and a second electrode layer 352; the second electrode layer 352 is located on the side of the second flexible base 351 close to the second alignment film layer 34; and the support spacer 33 is located at a local position between the first alignment film layer 32 and the second alignment film layer 34.

[0117] In some embodiments, refer to Figure 3 and Figure 6 The first flexible substrate 311 and the second flexible substrate 351 extend to the corresponding regions of the liquid crystal filling port 10, respectively. (Refer to...) Figure 6 The first flexible substrate 311 and the second flexible substrate 351 extend into the liquid crystal filling port 10, respectively, and serve as the upper and lower sidewalls of the liquid crystal filling port 10.

[0118] In some embodiments, refer to Figure 7 and Figure 8 , Figure 7 This is a top view of the structure of another type of dimming glass in an embodiment of this disclosure. Figure 8 For the dimming glass edge in the embodiments of this disclosure Figure 7 A cross-sectional view of the structure along the DD section line. The sealing structure 101 is located between the first substrate 200 and the second substrate 300; the orthographic projection of the sealing structure 101 on the first tempered glass layer 1 overlaps with the orthographic projection of the peripheral edges of the first substrate 200 and the second substrate 300 on the first tempered glass layer 1. The sealing structure 101 is located at the position where the sealing adhesive was originally placed between the first substrate 200 and the second substrate 300. This also allows the sealing structure 101 to seal the periphery of the first substrate 200 and the second substrate 300.

[0119] In some embodiments, the edge sealing structure 101 uses the same raw material as the first adhesive layer 2 and the second adhesive layer 4; the raw material includes polyvinyl butyral (PVB) or ethylene-vinyl acetate copolymer (EVA). The material configuration of the edge sealing structure 101 facilitates the integral lamination of the various substrates or film layers of the switching glass.

[0120] In some embodiments, refer to Figure 7 and Figure 9 , Figure 9 For the dimming glass edge in the embodiments of this disclosure Figure 7 A cross-sectional view of the structure along the EE section line. The first flexible substrate 311 and the second flexible substrate 351 extend to the corresponding regions of the liquid crystal filling port 10, respectively. (Refer to...) Figure 9 The first flexible substrate 311 and the second flexible substrate 351 extend to the corresponding areas of the liquid crystal injection port 10, and serve as the upper and lower sidewalls of the liquid crystal injection port 10.

[0121] In some embodiments, the support spacer 33 is also distributed in the region of the corresponding liquid crystal filling port 10 between the first flexible substrate 311 and the second flexible substrate 351. The support spacer 33 is formed on the entire surface of the first alignment film layer 32, so the support spacer 33 is also distributed in the region of the liquid crystal filling port 10; the support spacer 33 can provide support for the portions of the first flexible substrate 311 and the second flexible substrate 351 that serve as the upper and lower sidewalls of the liquid crystal filling port 10, so that a capillary channel is formed between the upper and lower sidewalls to allow the liquid crystal 6 to pass through.

[0122] In some embodiments, at least one of the first electrode layer 312, the second electrode layer 352, the first alignment film layer 32, and the second alignment film layer 34 extends to the corresponding region of the liquid crystal filling port 10.

[0123] Since the first electrode layer 312 is formed on the entire surface of the first flexible substrate 311, and the second electrode layer 352 is formed on the entire surface of the second flexible substrate 351, the first electrode layer 312 and the second electrode layer 352 extend to the liquid crystal filling port 10 region, respectively. The first alignment film layer 32 is formed on the entire surface of the first electrode layer 312, and the second alignment film layer 34 is formed on the entire surface of the second electrode layer 352, so the first alignment film layer 32 and the second alignment film layer 34 also extend to the liquid crystal filling port 10 region, respectively. This configuration simplifies the fabrication process of the first electrode layer 312, the second electrode layer 352, the first alignment film layer 32, and the second alignment film layer 34, eliminating the need for secondary cutting or patterning of each film layer to form the corresponding liquid crystal filling port 10 region. Furthermore, it facilitates the formation of capillary-shaped liquid crystal filling ports 10.

[0124] In some embodiments, the first flexible substrate 31 has a bending radius of greater than 1800 mm along the first direction X; the first flexible substrate 31 has a bending radius of greater than 2000 mm along the second direction Y; the second flexible substrate 35 has a bending radius of greater than 1800 mm along the first direction X; the second flexible substrate 35 has a bending radius of greater than 2000 mm along the second direction Y; and the first direction X and the second direction Y are perpendicular to form a plane rectangular coordinate system.

[0125] The gap between the first substrate 200 and the second substrate 300 is filled with liquid crystal 6 to form a light-adjusting structure 3. Compared with the rigid glass substrate of the rigid liquid crystal light-adjusting glass in the prior art, the first flexible substrate 31 and the second flexible substrate 35 in the embodiments of the present disclosure can be flexibly bent, thereby preventing the light-adjusting structure 3 from being fragile and ensuring the safety performance of the light-adjusting glass when applied to a vehicle. On the other hand, the first flexible substrate 31 and the second flexible substrate 35 can be flexibly bent, so that the flexible substrate and even the light-adjusting structure 3 can well adapt to the modeling requirements of the single curvature (i.e., bending in one direction) or double curvature (i.e., bending in two opposite directions) of the outer tempered glass layer, and completely match the predetermined shape of the outer tempered glass layer, thereby well adapting to the current demand for double curvature of the light-adjusting glass, realizing the double curvature (i.e., bending in two opposite directions) of the light-adjusting glass without wrinkles, and thus better meeting the demand for the light-adjusting glass as vehicle window glass.

[0126] In some embodiments, the transmittance of the first flexible substrate 31 is greater than 80%; and the transmittance of the second flexible substrate 35 is greater than 80%. The first flexible substrate 31 and the second flexible substrate 35 with the transmittance can ensure the transmittance of the light-adjusting glass. Compared with the PDLC light-adjusting glass and the EPD light-adjusting glass with high haze in the prior art, the haze of the light-adjusting glass in the embodiments of the present disclosure is less than 1, which can well meet the standard demand for vehicle window when the light-adjusting glass is applied to a vehicle.

[0127] In some embodiments, the thermal shrinkage rate of the first flexible substrate 31 along the first direction X is less than 0.03%; the thermal shrinkage rate of the first flexible substrate 31 along the second direction Y is less than 0.03%; the thermal shrinkage rate of the second flexible substrate 35 along the first direction X is less than 0.03%; and the thermal shrinkage rate of the second flexible substrate 35 along the second direction Y is less than 0.03%. The thermal shrinkage rates of the first flexible substrate 31 and the second flexible substrate 35 can well meet the standard demand for the light-adjusting glass applied to a vehicle window.

[0128] The thermal shrinkage rates of the first flexible substrate 31 and the second flexible substrate 35 are close to the thermal shrinkage rate of the outer tempered glass layer, which greatly reduces the relative thermal shrinkage amount between the flexible substrate and the outer tempered glass layer in the high-temperature and high-pressure lamination process, reduces the relative thermal shrinkage change between the two, that is, the thermal shrinkage changes of the two are basically consistent, thereby better realizing the double-curved (i.e., bending in two opposite directions) and wrinkle-free of the switchable glass, and ensuring the yield of the switchable glass.

[0129] In some embodiments, the thickness of the first flexible substrate 31 ranges from 40 to 200 μm; and the thickness of the second flexible substrate 35 ranges from 40 to 200 μm.

[0130] In some embodiments, preferably, the thickness of the first flexible substrate 31 ranges from 170 to 200 μm; and the thickness of the second flexible substrate 35 ranges from 170 to 200 μm.

[0131] The first flexible substrate 31 with a thickness of 170 μm or more and the second flexible substrate 35 with a thickness of 170 μm or more perform better than the first flexible substrate 31 with a thickness of less than 170 μm and the second flexible substrate 35 with a thickness of less than 170 μm in the lamination process, and the overall lamination Mura (i.e., local blackening phenomenon) of the switchable glass is less or even does not exist, thereby improving the overall light transmission and appearance performance of the switchable glass applied to the vehicle window.

[0132] In some embodiments, the melting temperature of the first adhesive layer 2 ranges from 130 to 150 degrees (in this case, degrees Celsius); and the melting temperature of the second adhesive layer 4 ranges from 130 to 150 degrees. In this way, the first adhesive layer 2 and the second adhesive layer 4 can be fully melted at a lamination temperature of 130 to 150 degrees, so as to form a frame for the periphery of the first substrate 200 and the second substrate 300.

[0133] In some embodiments, the temperature resistance of the first flexible substrate 31 is greater than or equal to 170 degrees; and the temperature resistance of the second flexible substrate 35 is greater than or equal to 170 degrees.

[0134] In some embodiments, the temperature resistance of the first flexible substrate 31 is greater than 150 degrees; and the temperature resistance of the second flexible substrate 35 is greater than 150 degrees.

[0135] The temperature resistance of the first flexible substrate 31 and the second flexible substrate 35 can ensure that they will not be thermally damaged in the subsequent film layer preparation process (temperature range: 90 to 120 degrees) and the subsequent lamination process (temperature range: 130 to 150 degrees), and can also prevent the first flexible substrate 31 and the first tempered glass layer 1 from peeling off each other, and prevent the second flexible substrate 35 and the second tempered glass layer 5 from peeling off each other.

[0136] In some embodiments, the material of the first flexible substrate 311 and the second flexible substrate 351 includes any one of PET (polyethylene terephthalate), COP (cyclo olefin polymer), CPI (transparent polyimide film), TAC (triacetyl cellulose film). The material of the first electrode layer 312 and the second electrode layer 352 includes a transparent conductive material such as ITO (indium tin oxide) or IZO (indium zinc oxide).

[0137] In some embodiments, the first electrode layer 312 covers the first flexible substrate 311 entirely; and the second electrode layer 352 covers the second flexible substrate 351 entirely. Different voltage signals are applied to the first electrode layer 312 and the second electrode layer 352 respectively, such as 0-24V voltage signals or 0-16V voltage signals, so as to form an electric field between the first electrode layer 312 and the second electrode layer 352, which can deflect the liquid crystal 6, thereby realizing the function of the entire light-adjustable glass.

[0138] In some embodiments, the sheet resistance of the first electrode layer 312 ranges from 20 to 200Ω / □; and the sheet resistance of the second electrode layer 352 ranges from 20 to 200Ω / □.

[0139] In some embodiments, referring to Figure 10 A top view of a partitioned first electrode layer and a partitioned second electrode layer in the embodiments of the present disclosure is provided. In the top view, the first electrode layer 312 is divided into at least two first sub-areas 301, and the adjacent two first sub-areas 301 are spaced apart from each other; the second electrode layer 352 is divided into at least two second sub-areas 302, and the adjacent two second sub-areas 302 are spaced apart from each other; the first sub-areas 301 and the second sub-areas 302 correspond to each other one by one and the orthographic projections of the first sub-areas 301 and the second sub-areas 302 on the first flexible substrate 311 coincide.

[0140] By partitioning the first electrode layer 312 and the second electrode layer 352 respectively, the partitioned light-adjustable glass can be realized, so that the light adjustment of the light-adjustable glass is more personalized and intelligent, thereby meeting the different personalized needs of vehicle customers.

[0141] In some embodiments, the first sub-areas 301 and the second sub-areas 302 can be uniform partitions of the first electrode layer 312 and the second electrode layer 352 respectively, such as the interval distance between the adjacent first sub-areas 301 is greater than or equal to 40μm, and similarly, the interval distance between the adjacent second sub-areas 302 is greater than or equal to 40μm; the partitioning can be realized by a laser etching method; the wavelength of the laser ranges from 200 to 380nm; and the subsequent circuit driving can be realized by a partition control mode, such as the light-adjustable glass can selectively adjust the light of a certain partition, and the other areas remain transparent or black.

[0142] In some embodiments, referring to Figure 11A top view of another sub-area setting of the first electrode layer and the second electrode layer in the embodiments of the present disclosure is shown. In this case, the first electrode layer 312 and the second electrode layer 352 can also be sub-divided respectively. For example, the first electrode layer 312 and the second electrode layer 352 can be patterned to achieve simple text display, such as vehicle power, temperature, time, etc. under the premise of ensuring that the overall transmittance of the dimming glass is greater than 40% of the national security standard. The specific scheme can be as follows: the first electrode layer 312 and the second electrode layer 352 in a corner area of the dimming glass are patterned, and the first electrode layer 312 and the second electrode layer 352 are patterned into a plurality of first sub-areas 301 and a plurality of second sub-areas 302 respectively, the plurality of first sub-areas 301 and the plurality of second sub-areas 302 are one-to-one corresponding and orthographic projection coincides, the interval distance between adjacent first sub-areas 301 is greater than or equal to 2 μm, and similarly, the interval distance between adjacent second sub-areas 302 is greater than or equal to 2 μm. The first electrode layer 312 and the second electrode layer 352 can be sub-divided by patterning process (including exposure, development, etching, etc.). For example, seven groups of first sub-areas 301 and second sub-areas 302 are arranged in one-to-one correspondence to form four side-by-side "day" shapes, and subsequent circuit driving can control any one sub-area in the "day" to light up, so that the four side-by-side "days" dynamically display time information. The areas outside the corner area of the dimming glass are provided with the first electrode layer 312 and the second electrode layer 352 respectively, so that the upper and lower electrode layers in this part are used as the overall dimming area of the dimming glass to achieve different transmittance (i.e. different transparency) of the dimming glass.

[0143] In some embodiments, the thickness of the dimming structure 3 ranges from 0.15 to 0.38 mm. The thickness of the first flexible substrate 31 and the second flexible substrate 35 ranges from 40 to 180 μm. The thickness of the first tempered glass layer 1 and the second tempered glass layer 5 ranges from 2 to 3 mm. The thickness of the first adhesive layer 2 and the second adhesive layer 4 ranges from 0.38 to 0.76 mm. The thickness of each film layer can ensure that the overall thickness of the dimming glass does not exceed the overall thickness parameter of the vehicle window, so as to ensure that the dimming glass can be normally installed and applied to the vehicle.

[0144] In some embodiments, the raw material of the first adhesive layer 2 and the second adhesive layer 4 includes PVB (polyvinyl butyral) or EVA (ethylene-vinyl acetate copolymer). An ultraviolet filtering layer or material can be provided in the first adhesive layer 2 and the second adhesive layer 4, which can filter out ultraviolet light below 400 nm, so as to avoid the influence of ultraviolet radiation on the liquid crystal 6 and reduce the service life of the dimming glass.

[0145] In some embodiments, the liquid crystal 6 comprises a dye liquid crystal; the dye liquid crystal is used for liquid crystal display dye. The dye is added to the liquid crystal to make the liquid crystal produce color display. The dye liquid crystal has sufficient solubility to the liquid crystal and does not affect the performance of the liquid crystal. Other substructures have good linearity, which can maintain parallel arrangement with the orientation of the liquid crystal molecules after being added to the liquid crystal, and the molecules rotate in phase with the liquid crystal molecules under the action of the electric field. The dye liquid crystal not only needs to be pure, but also needs to have high dichroic ratio (≥10), high extinction coefficient (≥0.3), high solubility (≥5%), high resistance (≥10 ohm·cm), high stability, and good full color. Generally, dye liquid crystals can be divided into two categories: azo dyes and anthraquinone derivatives. The temperature resistance range of the dye liquid crystal is -40-150 degrees. Among them, after working at a high temperature of 100 degrees or more, the dye liquid crystal can recover to the normal working state and does not affect the reliability; after working at -40 degrees, the dye liquid crystal does not crystallize and can work normally at room temperature without damaging the orientation and optical properties of the light adjustment structure 3.

[0146] In some embodiments, the dye liquid crystal can use gray dye, which can form a good visual effect with the color of the vehicle body, and is favored by the client; of course, the dye liquid crystal can also use other colors of dye, which is not limited here.

[0147] In some embodiments, the curing temperature range of the orientation liquid used in the first orientation film layer 32 is 80-150 degrees; the curing temperature range of the orientation liquid used in the second orientation film layer 34 is 80-150 degrees. Among them, the curing temperature range is more conducive to the volatilization of the excess solvent in the preparation of the orientation film layer, ensuring that the characteristics of the formed orientation film layer are more optimal and the defects are less.

[0148] In some embodiments, the support spacer 33 is a spherical particle; the support spacer 33 comprises a spherical body and an outer coating layer, and the outer coating layer is wrapped on the surface of the spherical body; the color of the outer coating layer comprises black. Among them, the black outer coating layer can reduce the dark state light transmission of the light adjustment structure 3 and reduce the dark state transmittance. The setting of the support spacer 33 can ensure that a uniform gap is formed between the first orientation film layer 32 and the second orientation film layer 34, thereby ensuring that the thickness of the liquid crystal 6 layer in the gap is uniform, and further ensuring that the light transmission effect of the light adjustment glass is uniform.

[0149] In some embodiments, the support spacer can also be columnar, and the support spacer is white or transparent.

[0150] In some embodiments, the curing temperature of the material used for the support spacers 33 ranges from 90 to 120 degrees. At this temperature range, the support spacers 33 can be firmly bonded to the surfaces of the first and second alignment film layers 32 and 34 and are not prone to movement, thereby ensuring the uniformity of the gap formed between the first and second alignment film layers 32 and 34.

[0151] In addition, the curing temperature of the support spacers 33 matches the tolerance temperature of the first and second flexible substrates 31 and 35, the curing temperature of the first and second alignment film layers 32 and 34, and the tolerance temperature of the liquid crystal 6, thereby preventing thermal damage to the first and second flexible substrates 31 and 35 during the subsequent bonding process of the support spacers 33 to the first and second alignment film layers 32 and 34 and the subsequent lamination process (temperature range: 130-150 degrees), while preventing the first flexible substrate 31 from peeling off the first tempered glass layer 1 and the second flexible substrate 35 from peeling off the second tempered glass layer 5.

[0152] The light-adjustable glass provided in the embodiments of the present disclosure can be curved and not fragile, does not pose a threat to personal safety due to broken glass, has a low haze value (less than 1), meets the vehicle standard, and meets the vehicle window standard requirement of fast response (less than 40 ms), has a short response time, and can well meet the traffic fast response requirement, thereby filling the technical gap in the current market demand.

[0153] Based on the above-described structure of the light-adjustable glass, the embodiments of the present disclosure further provide a preparation method of the light-adjustable glass, which will be described below with reference to Figures 12-13 , Figure 12 FIG. 1 is a flowchart of the preparation method of the light-adjustable glass in the embodiments of the present disclosure; Figure 13 FIG. 2 is a structural schematic diagram of the light-adjustable glass in the preparation process in the embodiments of the present disclosure; Figure 4 and Figure 5 FIG. 3 is a structural schematic diagram of the light-adjustable glass in the preparation process in the embodiments of the present disclosure;

[0154] Step S101: respectively preparing the first and second substrates 200 and 300 and the support spacers 33 located between the first and second substrates 200 and 300.

[0155] Step S102: sequentially stack the first tempered glass layer 1, the raw material of the first adhesive layer 2, the first substrate 200, the support spacer 33, the second substrate 300, the raw material of the second adhesive layer 4, and the second tempered glass layer 5, and laminate them in an autoclave at a temperature of 130-150 degrees and a pressure of 12-14 bars, the raw material of the first adhesive layer 2 and the raw material of the second adhesive layer 4 being in a molten state under the condition of a temperature of 130-150 degrees and a pressure of 12-14 bars, and being solidified after cooling; forming the first adhesive layer 2, the second adhesive layer 4, the edge sealing structure 101 surrounding the periphery of the first substrate 200 and the second substrate 300, the liquid crystal filling port 10 on the edge sealing structure 101, and the gap formed by the edge sealing structure 101, the first substrate 200, and the second substrate 300.

[0156] Step S103: filling the liquid crystal 6 into the gap through the liquid crystal filling port 10 in a vacuum chamber at room temperature.

[0157] Step S104: sealing the liquid crystal filling port with sealing glue.

[0158] In some embodiments, step S101: preparing the first substrate 200 and the second substrate 300 and the support spacer 33 between the first substrate 200 and the second substrate 300 respectively, specifically includes: step S1: disposing the first flexible substrate 31 on the first glass substrate 7; disposing the second flexible substrate 35 on the second glass substrate 8; preparing the first orientation film layer 32 on the side of the first flexible substrate 31 away from the first glass substrate 7; preparing the second orientation film layer 34 on the side of the second flexible substrate 35 away from the second glass substrate 8.

[0159] In this step, the first flexible substrate 31 is attached to the first glass substrate 7 by the adhesive film 16, and the second flexible substrate 35 is attached to the second glass substrate 8 by the adhesive film 16. The first orientation film layer 32 and the second orientation film layer 34 are prepared by coating the orientation film material, rubbing the orientation, and curing. Among them, the first orientation film layer 32 and the second orientation film layer 34 are cured at about 100 degrees for 60-120 minutes to avoid the influence of residual solvents in the orientation film layer on the long-term reliability of the dimming structure 3. In this embodiment, the first orientation film layer 32 and the second orientation film layer 34 each have two curing processes, the first curing being performed during the orientation film layer preparation process and being cured at 100 degrees for 90 minutes, and the second curing being performed when the flexible substrate and the glass substrate are debonded and being cured at 150 degrees for 20 minutes, the two warming and curing processes being conducive to the complete volatilization of the solvent in the orientation film layer.

[0160] Step S2: preparing the support spacer 33 on the side of the first orientation film layer 32 away from the first flexible substrate 31.

[0161] Step S3: separating the first flexible substrate 31 from the first glass substrate 7; separating the second flexible substrate 35 from the second glass substrate 8.

[0162] In some embodiments, step S102: sequentially stacking the first tempered glass layer 1, the first bonding layer 2, the first substrate 200, the support spacer 33, the second substrate 300, the second bonding layer 4, and the second tempered glass layer 5, and laminating in an autoclave with a temperature of 130-150 degrees and a pressure of 12-14 bar, to form the edge sealing structure 101 surrounding the periphery of the first substrate 200 and the second substrate 300, the liquid crystal filling port 10 on the edge sealing structure 101, and the gap formed by the edge sealing structure 101, the first substrate 200, and the second substrate 300, specifically comprising: Figure 14 , the temperature and pressure curve of the lamination process in the embodiments of the present disclosure; Figure 15 , a schematic diagram of the distance between the corresponding edges of the flexible substrate and the tempered glass layer in the orthographic projection; Figure 16 , a specific process flow diagram of lamination. Referring to Figure 15 and Figure 2 , step S41: the distance s1 between the corresponding edges of the first flexible substrate 31 and the first tempered glass layer 1 in the orthographic projection on the first tempered glass layer 1 is 3-5 mm; the distance s2 between the corresponding edges of the second flexible substrate 35 and the second tempered glass layer 5 in the orthographic projection on the second tempered glass layer 5 is 3-5 mm.

[0163] , referring to Figure 16 , before this step S41, it further includes a pretreatment process (such as cleaning, drying, etc.) for the tempered glass layer; and a bending process (such as bending the tempered glass layer into a curved surface at high temperature) for the tempered glass layer. In addition, before this step S41, it further includes a step of pulling / chopping the first bonding layer 2 and the second bonding layer 4 (PVB glue) into a specific shape; and a step of adjusting the humidity of the first bonding layer 2 and the second bonding layer 4.

[0164] Step S42: placing the stacked film layer structure into a vacuum bag and vacuumizing the vacuum bag.

[0165] In this step, the vacuum bag opening is sealed by sleeving a rubber ring on the opening of the vacuum bag, and then the vacuum bag is vacuumized.

[0166] Step S43: placing the stacked film layer structure in the vacuum bag into an autoclave for lamination.

[0167] The process parameters of the lamination in the autoclave are as follows: the temperature rising speed is 5°C / min; the temperature rising time is 20-25 min; the pressure rising speed is 0.7 bar / min; the temperature is kept at 130-150°C and the pressure is kept at 12-14 bar for more than 10 min; the cooling time is 30 min; and the pressure relief temperature is less than 50°C.

[0168] The lamination in the step S43 specifically includes: sealing the vacuum bag with the stacked film layer structure inside by sleeving a rubber ring; primary pressing and primary pressing lamination, i.e. further vacuumizing the vacuum bag, such as cold vacuumizing for 4-5 hours to a vacuum degree of 70%, and then hot vacuumizing at 90°C; then high-temperature (130-150°C) high-pressure (12-14 bar) lamination, such as keeping at 145°C and 12 bar for 50 min (see Figure 14 ); and finally trimming, i.e. scraping off the excess adhesive layer (PVB adhesive) around the lamination structure with a blade.

[0169] In the lamination process of the step S102, the first adhesive layer 2 and the second adhesive layer 4 can form the edge sealing structure 101 shown in Figure 4 and Figure 5 after being melted at a temperature of 130-150°C and a pressure of 12-14 bar, i.e. the edge sealing structure 101 covers the peripheral edge end surface of the first substrate 200 and the second substrate 300. The first adhesive layer 2 and the second adhesive layer 4 achieving such a function and structure can be achieved by adjusting the thickness of the first adhesive layer 2 and the second adhesive layer 4, such as setting a thicker thickness of the first adhesive layer 2 and the second adhesive layer 4 to cover the peripheral edge end surface of the first substrate 200 and the second substrate 300.

[0170] In some embodiments, referring to Figure 6 , the first substrate 200 and the second substrate 300 respectively extend outward from the main body part to form branch parts, and the extension end edges of the branch parts are flush with the corresponding edges of the first tempered glass layer 1 and the second tempered glass layer 5 at the position where the liquid crystal filling port 10 is formed, so that the liquid crystal filling port 10 formed after lamination is a capillary tube with the first substrate 200 and the second substrate 300 as the upper and lower side walls and the edge sealing structure 101 as the left and right side walls.

[0171] In some embodiments, referring to Figure 17 and Figure 18 , Figure 17 is a top view of the stacked layer structure of the dimmable glass for forming the structure in Figures 7-9 before lamination; Figure 18 is a sectional view of the structure in Figure 17Structure sectional view of the middle BB section line. Step S102: sequentially stack the first tempered glass layer 1, the first bonding layer 2, the first substrate 200, the support spacer 33, the second substrate 300, the second bonding layer 4 and the second tempered glass layer 5, and laminate them in an autoclave with a temperature of 130-150 degrees and a pressure of 12-14 bar, to form the edge sealing structure 101 surrounding the periphery of the first substrate 200 and the second substrate 300, the liquid crystal filling port 10 on the edge sealing structure 101, and the gap formed by the edge sealing structure 101, the first substrate 200 and the second substrate 300. Before laminating, a bonding strip 104 is arranged between the first substrate 200 and the second substrate 300. The bonding strip 104 is distributed on the periphery edge area of the first substrate 200 and the second substrate 300. The bonding strip 104 is disconnected at the position corresponding to the liquid crystal filling port.

[0172] In some embodiments, the bonding strip 104 and the first bonding layer 2 and the second bonding layer 4 are made of the same material, which includes polyvinyl butyral (PVB) or ethylene-vinyl acetate copolymer (EVA).

[0173] Before laminating, the stacked structure is as shown in Figure 17 and Figure 18 The specific process conditions and parameters of the laminated light-adjustable glass are the same as those in Figure 13 . For example, in the laminating process, the bonding strip 104 is melted at a temperature of 130-150 degrees and a pressure of 12-14 bar, and then the first substrate 200 and the second substrate 300 are bonded together, to form the edge sealing structure 101 as shown in Figure 8 . At the same time, the first bonding layer 2 is melted at a temperature of 130-150 degrees and a pressure of 12-14 bar, and then the first substrate 200 and the first tempered glass layer 1 are bonded together. The second bonding layer 4 is melted at a temperature of 130-150 degrees and a pressure of 12-14 bar, and then the second substrate 300 and the second tempered glass layer 5 are bonded together. However, after the first bonding layer 2 and the second bonding layer 4 are melted, they do not form a coating on the periphery edge end surface of the first substrate 200 and the second substrate 300. To achieve the above effects and structures, the thickness of the first bonding layer 2 and the second bonding layer 4 can be adjusted. For example, by setting a thinner thickness of the first bonding layer 2 and the second bonding layer 4, the first bonding layer 2 and the second bonding layer 4 do not form a coating on the periphery edge end surface of the first substrate 200 and the second substrate 300.

[0174] In some embodiments, the bonding strip 104 is disconnected at the position corresponding to the liquid crystal filling port, so that the liquid crystal filling port in the edge sealing structure 101 can be formed after laminating. That is, the liquid crystal filling port is formed as a capillary tube with the first substrate 200 and the second substrate 300 as the upper and lower side walls and the edge sealing structure 101 as the left and right side walls.

[0175] In some embodiments, the step S103 of filling the liquid crystal 6 into the gap at room temperature in the vacuum chamber through the liquid crystal filling port, refers to Figure 19 , a schematic diagram of filling the liquid crystal. Specifically, the step includes Figure 19 and Figure 3 , vacuumizing the vacuum chamber to below 1 pa; placing the laminated film layer structure on the liquid crystal tank 9 containing the liquid crystal 6, and making the liquid crystal filling port 10 of the laminated film layer structure extend into the liquid crystal 6 in the liquid crystal tank 9, the liquid crystal filling port 10 being a capillary tube, so that the liquid crystal 6 is filled into the gap under the action of vacuum capillary suction.

[0176] In this step S103, the laminated light control glass is placed on the liquid crystal tank 9, and then vacuumized to below 1 pa after the vacuum chamber on which the liquid crystal tank 9 is placed is vacuumized, and then vacuum capillary filling is performed, so that the liquid crystal fills the entire gap in the light control glass, and finally the liquid crystal fills the entire liquid crystal filling port 10.

[0177] In some embodiments, the step S104 of sealing the liquid crystal filling port 10 with sealing glue. That is, the opening of the liquid crystal filling port 10 is sealed with sealing glue, specifically including: smearing curing glue at the opening position of the liquid crystal filling port 10; curing the curing glue by light.

[0178] In some embodiments, the curing glue includes ultraviolet curing glue. The specific process of sealing the liquid crystal filling port 10 is: smearing UV glue (ultraviolet curing glue) at the opening position of the liquid crystal filling port 10; wherein the UV glue covers the opening; then ultraviolet light irradiates the UV glue at the opening position, so that the UV glue is cured, and the cured UV glue can seal the opening to prevent external air from entering and internal liquid crystal from flowing out. The process of sealing the liquid crystal filling port 10 is carried out in a vacuum chamber, so it can ensure that external air will not enter the gap. The liquid crystal is filled into the gap in the light control glass at room temperature by using the vacuum capillary filling process, which causes less damage to the liquid crystal 6, and the residual gas in the gap of the light control structure 3 can be removed by vacuumizing before filling, so as to avoid bubbles in the liquid crystal in the light control structure 3.

[0179] In some embodiments, the liquid crystal filling port 10 can be immersed in the sealing glue (the sealing glue can be placed in an opening container) when the liquid crystal is about to fill the entire liquid crystal filling port 10 (for example, the liquid crystal filling port 10 is filled with liquid crystal, but the liquid crystal has not yet filled the entire liquid crystal filling port 10), at this time, the liquid crystal filling port 10 fills the remaining part of the liquid crystal and its opening by capillary suction, and then the sealing glue is cured by light irradiation.

[0180] It should be noted that the sealing glue of the liquid crystal filling port 10 cannot be made of the same material as the first adhesive layer 2 and the second adhesive layer 4, because in the present disclosure, the first substrate 200, the second substrate 300 and the tempered glass laminated sheet are first laminated through the first adhesive layer 2 and the second adhesive layer 4, then the liquid crystal 6 is filled, and finally the opening of the liquid crystal filling port 10 is sealed, so the sealing process of the sealing glue cannot damage or affect the structure after lamination. Therefore, the sealing glue usually uses light curing glue or other sealing glue with a curing temperature that does not approach or exceed the lamination temperature.

[0181] The specific preparation process of the above steps S101-S104 is as follows: the cut first flexible substrate 31 and second flexible substrate 35 are respectively attached to the first glass substrate 7 and second glass substrate 8 with a film thickness of 0.5-0.7T; then the orientation film layer coating process is carried out, and the formed orientation film layer is dried at 100 degrees for 90 minutes; the pre-tilt angle of 3-5 degrees is formed by rubbing orientation (here, the pre-tilt angle of the first orientation film layer 32 and the second orientation film layer 34 is consistent in degree and opposite in direction; here, the pre-tilt angle of the orientation film layer is not limited, and for other display modes of the liquid crystal cell, the pre-tilt angle can also be other degrees, which is determined according to the electric field mode of the liquid crystal cell); then 8μm thick support spacer material (spherical particles) is sprayed on the first orientation film layer 32; curing at 100 degrees for one hour to bond the support spacer 33 and the first orientation film layer 32 together; then the first flexible substrate 31 and the first glass substrate 7 are debonded at 150 degrees for 20 minutes, and at the same time, the second flexible substrate 35 and the second glass substrate 8 are directly debonded under the same process conditions; the debonded flexible substrate is directly and sequentially stacked with the tempered glass layer and the adhesive layer, wherein the distance between the corresponding edges of the flexible substrate and the tempered glass layer is about 3-5mm; the vacuum bag is used to cover the entire dimming glass which is sequentially stacked, vacuumized, and then put into the autoclave for lamination; the key process parameters of the lamination process are temperature 130-150 degrees, pressure 12-14bar, and holding for 50 minutes, then cooling and decompression; after lamination, the liquid crystal 6 is vacuum filled into the gap in the dimming glass.

[0182] In this embodiment, refer to Figure 20 , which is a schematic diagram of the binding connection of the electrode and the driving circuit. In which, refer to Figure 20 , Figure 4 , Figure 5 and Figure 8, the first flexible substrate 31 comprises a first flexible base 311 and a first electrode layer 312 formed thereon; the second flexible substrate 35 comprises a second flexible base 351 and a second electrode layer 352 formed thereon; the first electrode layer 312 further extends out of the sealing structure 101 and forms a first binding electrode 303; the second electrode layer 352 further extends out of the sealing structure 101 and forms a second binding electrode 304; the preparation method further comprises: binding the first binding electrode 303 and the second binding electrode 304 to the driving circuit 11 respectively, so that the driving circuit 11 provides driving signals to them respectively.

[0183] In some embodiments, the first electrode layer and the second electrode layer of the partitioned area, the first sub-area divided by the first electrode layer and the second sub-area divided by the second electrode layer can be respectively bound to the driving circuit, so that the driving circuit can provide driving signals to each first sub-area and each second sub-area respectively and independently, thereby realizing independent dimming of different partitions.

[0184] In some embodiments, referring to Figure 20 , the driving circuit 11 is respectively bound to the first binding electrode 303 and the second binding electrode 304 by using anisotropic conductive adhesive film; wherein the diameter of the conductive particles in the anisotropic conductive adhesive film is greater than 10 μm (wherein the conductive particles are gold ball particles); the thickness of the anisotropic conductive adhesive film is greater than 20 μm; the temperature during binding is 200-320 degrees; the pressure during binding is 2-5 Kgf; the binding time is 10-20 s. During binding, the anisotropic conductive adhesive (i.e. ACF adhesive) is placed between the binding end of the driving circuit 11 and the binding electrode, and the binding end of the driving circuit 11 and the binding electrode are pressed and bound under the above process conditions. The binding principle is that the gold ball particles located between the binding end and the binding electrode are flattened to realize conductive connection between them.

[0185] In some embodiments, referring to Figure 21 , a schematic diagram for printing ink on the four frame areas of the dimming glass. Wherein, the preparation method of the dimming glass further comprises: printing ink 12 on the four frame areas of the dimming glass; the width of the frame area of the printed ink 12 is 5-15 mm. The frame area printed ink 12 can prevent light leakage at the edge of the dimming glass.

[0186] Wherein, the ink 12 can completely cover the sealing structure, the first binding electrode and the first binding electrode located in the frame area, and the peripheral edges of the first tempered glass layer and the second tempered glass layer, thereby better preventing light leakage in the frame area of the dimming glass through the transparent sealing structure and the first tempered glass layer and the second tempered glass layer.

[0187] The preparation method of the dimming glass in the embodiment, compared with the preparation process of the flexible liquid crystal dimming glass in the disclosed technology, the preparation method of the dimming glass in the embodiment first performs sheeting of the superposed first tempered glass layer 1, the first bonding layer 2, the first substrate 200, the support spacer 33, the second substrate 300, the second bonding layer 4 and the second tempered glass layer 5 in a high-pressure kettle at high temperature (130-150 degrees) and high pressure (12-14 bar); and then fills the liquid crystal 6 in a vacuum chamber at normal temperature (such as room temperature 25 degrees) by using the vacuumizing process, so that the flexible dimming structure 3 in the dimming glass and the orientation film layer, the support spacer 33 and the liquid crystal 6 in the flexible dimming structure 3 are more stable in performance, the overall dimming glass has no sheeting bubble defect, the product yield is more controllable, and the performance is better.

[0188] The embodiment of the present disclosure also provides a vehicle comprising the dimming glass in the above-mentioned embodiments, which is used as a window of the vehicle.

[0189] By using the dimming glass in the above-mentioned embodiments, the dimming glass can realize the dimming of the vehicle window, and also realizes the double-curved and unbreakable vehicle window, and there is no problem of fragment threatening personal safety, and the low haze value (less than 1) can meet the vehicle standard, and the fast response (less than 40 ms) can meet the vehicle window standard demand, the short response time can well meet the traffic fast response demand.

[0190] The vehicle can be any vehicle or product configured with the dimming window glass, such as a car, a train, an airplane, a motorcycle, etc.

[0191] It can be understood that the above embodiments are only exemplary embodiments for illustrating the principles of the present disclosure, and the present disclosure is not limited thereto. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and essence of the present disclosure, and these modifications and improvements are also considered as the protection scope of the present disclosure.

Claims

1. A light-adjustable glass, comprising: The first tempered glass layer, the first adhesive layer, the first substrate, the second substrate, the second adhesive layer, the second tempered glass layer and the support spacer are sequentially stacked; The raw material of the first adhesive layer and the raw material of the second adhesive layer are in a molten state under the condition of a temperature of 130-150 degrees and a pressure of 12-14 bar, and are solidified after cooling; The sealing structure is arranged at the periphery of the first substrate and the second substrate, and the sealing structure, the first substrate and the second substrate form a gap; The sealing structure is integrally formed with the first adhesive layer and / or the second adhesive layer; The sealing structure comprises a surrounding part, the surrounding part is in contact with the peripheral edge end surface of the first substrate and the second substrate, and the surrounding part and the first substrate and the second substrate do not overlap on the first tempered glass layer; The peripheral edge end surface of the first substrate and the second substrate except the opening of the liquid crystal filling port is wrapped and sealed by the surrounding part of the sealing structure; The sealing structure and the first adhesive layer and the second adhesive layer adopt the same raw material; The raw material comprises polyvinyl butyral or ethylene-vinyl acetate copolymer. The sealing structure further comprises a clamping part, the clamping part is arranged at the periphery of the gap, and is connected with the surrounding part; 2. The dimmable glass of claim 1, wherein, The projection of the clamping part on the first tempered glass layer overlaps the peripheral edge of the first substrate and the second substrate on the first tempered glass layer. The first substrate comprises a first flexible substrate and a first alignment film layer which are sequentially stacked in a direction away from the first adhesive layer; 3. The switchable glass of any of claims 1-2, wherein, The second substrate comprises a second alignment film layer and a second flexible substrate which are sequentially stacked in a direction close to the second adhesive layer; The first flexible substrate comprises a first flexible substrate and a first electrode layer; the first electrode layer is located on the side of the first flexible substrate close to the first alignment film layer; The second flexible substrate comprises a second flexible substrate and a second electrode layer; the second electrode layer is located on the side of the second flexible substrate close to the second alignment film layer; The support spacer is located between the first alignment film layer and the second alignment film layer. The first flexible substrate and the second flexible substrate respectively extend to the area corresponding to the liquid crystal filling port.

4. The dimmable glass of claim 3, wherein, The support spacer is also distributed between the first flexible substrate and the second flexible substrate in the area corresponding to the liquid crystal filling port.

5. The dimmable glass of claim 4, wherein, At least one of the first electrode layer, the second electrode layer, the first alignment film layer and the second alignment film layer extends to the area corresponding to the liquid crystal filling port.

6. The dimmable glass of claim 4, wherein, The first flexible substrate has a curvature radius greater than 1800mm when bent in a first direction; 7. The dimmable glass of claim 3, wherein, The first flexible substrate has a curvature radius greater than 2000mm when bent in a second direction; The second flexible substrate has a curvature radius greater than 1800mm when bent in the first direction; ​ The radius of curvature of the second flexible substrate when bent along the second direction is greater than 2000 mm; The first direction and the second direction perpendicularly intersect to form a plane rectangular coordinate system.

8. The dimmable glass of claim 3, wherein, The transmittance of the first flexible substrate is greater than 80%; The transmittance of the second flexible substrate is greater than 80%.

9. The dimmable glass of claim 3, wherein, The thermal shrinkage of the first flexible substrate along the first direction is less than 0.03%; The thermal shrinkage of the first flexible substrate along the second direction is less than 0.03%; The thermal shrinkage of the second flexible substrate along the first direction is less than 0.03%; The thermal shrinkage of the second flexible substrate along the second direction is less than 0.03%.

10. The dimmable glass of claim 3, wherein, The thickness of the first flexible substrate ranges from 40 to 200 µm; The thickness of the second flexible substrate ranges from 40 to 200 µm.

11. The dimmable glass of claim 3, wherein, The thickness of the first flexible substrate ranges from 170 to 200 µm; The thickness of the second flexible substrate ranges from 170 to 200 µm.

12. The switchable glass of claim 3, wherein, The first electrode layer covers the first flexible substrate entirely; and the second electrode layer covers the second flexible substrate entirely. Alternatively, the first electrode layer is divided into at least two first sub-regions, and adjacent two first sub-regions are spaced apart from each other; the second electrode layer is divided into at least two second sub-regions, and adjacent two second sub-regions are spaced apart from each other; the first sub-regions and the second sub-regions correspond to each other one by one, and the orthographic projections of the first sub-regions and the second sub-regions on the first flexible substrate coincide with each other.

13. The switchable glass of claim 12, wherein, The sheet resistance of the first electrode layer ranges from 20 to 200 ; The sheet resistance of the second electrode layer ranges from 20 to 200 .

14. The switchable glass of claim 1, wherein, The liquid crystal comprises a dye liquid crystal; and the dye liquid crystal has a temperature resistance range of -40 to 150 degrees.

15. The switchable glass of claim 3, wherein, The curing temperature of the orientation liquid used in the first orientation film layer ranges from 80 to 150 degrees. The curing temperature of the orientation liquid used in the second orientation film layer ranges from 80 to 150 degrees.

16. The switchable glass of claim 3, wherein, The support spacers are spherical particles. The support spacers comprise a spherical body and an outer coating layer, and the outer coating layer is wrapped on the surface of the spherical body. The color of the outer coating layer comprises black.

17. The switchable glass of claim 16, wherein, The curing temperature of the material used in the support spacers ranges from 90 to 120 degrees.

18. A vehicle, wherein, The dimmable glass comprises any one of claims 1-17, and the dimmable glass is used as a window of the vehicle.

19. A method for producing a light-controlling glass, the light-controlling glass comprising the light-controlling glass according to any one of claims 1 to 17, wherein, The preparation method comprises: respectively preparing a first substrate and a second substrate and support spacers between the first substrate and the second substrate; stacking a first tempered glass layer, raw materials of a first bonding layer, the first substrate, the support spacers, the second substrate, raw materials of a second bonding layer, and a second tempered glass layer in sequence, and bonding the layers in a high-pressure kettle at a temperature of 130-150 degrees and a pressure of 12-14 bar, wherein the raw materials of the first bonding layer and the raw materials of the second bonding layer are in a molten state at a temperature of 130-150 degrees and a pressure of 12-14 bar, and are solidified after cooling; a first bonding layer, a second bonding layer, an edge sealing structure surrounding the periphery of the first substrate and the second substrate, a liquid crystal filling port on the edge sealing structure, and a gap formed by the edge sealing structure, the first substrate, and the second substrate are formed; filling liquid crystal into the gap through the liquid crystal filling port in a vacuum chamber at room temperature; sealing the liquid crystal filling port with sealing glue; and sealing the liquid crystal filling port with sealing glue. The first tempered glass layer, the first adhesive layer, the first substrate, the support spacer, the second substrate, the second adhesive layer and the second tempered glass layer are sequentially stacked and laminated in an autoclave with a temperature of 130-150 degrees and a pressure of 12-14 bars, to form a sealing structure surrounding the periphery of the first substrate and the second substrate, a liquid crystal filling port on the sealing structure, and a gap formed by the sealing structure, the first substrate and the second substrate, and the method further comprises: Before lamination, an adhesive strip is arranged between the first substrate and the second substrate, the adhesive strip is distributed corresponding to the peripheral edge regions of the first substrate and the second substrate, and the adhesive strip is disconnected at a position corresponding to the formation of the liquid crystal filling port; The adhesive strip, the first adhesive layer and the second adhesive layer use the same raw material; The raw material comprises polyvinyl butyral or ethylene-vinyl acetate copolymer.

20. The method of claim 19, wherein the glass is prepared by a method comprising: The liquid crystal filling port is sealed by using sealing glue, which comprises: Applying a curing glue to the opening position of the liquid crystal filling port; Curing the curing glue by light.

21. The method of claim 20, wherein the glass is prepared by a method comprising: The curing glue comprises ultraviolet curing glue.

22. The method of making light-adjustable glass according to any one of claims 19-21, wherein, The first substrate and the second substrate are prepared respectively, which comprises: A first flexible substrate is arranged on a first glass substrate, and a second flexible substrate is arranged on a second glass substrate; A first alignment film layer is prepared on the side of the first flexible substrate away from the first glass substrate, and a second alignment film layer is prepared on the side of the second flexible substrate away from the second glass substrate; A support spacer is prepared on the side of the first alignment film layer away from the first flexible substrate; The first flexible substrate is separated from the first glass substrate, and the second flexible substrate is separated from the second glass substrate.

23. The method of claim 22, wherein the glass is prepared by a method comprising: The first tempered glass layer, the first adhesive layer, the first substrate, the support spacer, the second substrate, the second adhesive layer and the second tempered glass layer are sequentially stacked and laminated in an autoclave with a temperature of 130-150 degrees and a pressure of 12-14 bars, to form a sealing structure surrounding the periphery of the first substrate and the second substrate, a liquid crystal filling port on the sealing structure, and a gap formed by the sealing structure, the first substrate and the second substrate, and the method further comprises: The distance between the corresponding edges of the first flexible substrate and the first tempered glass layer in the orthographic projection on the first tempered glass layer is 3-5 mm, and the distance between the corresponding edges of the second flexible substrate and the second tempered glass layer in the orthographic projection on the second tempered glass layer is 3-5 mm; The stacked film layer structure is placed in a vacuum bag, and the vacuum bag is vacuumized; The stacked film layer structure wrapped by the vacuum bag is placed in an autoclave for lamination; The process parameters of the lamination in the autoclave are as follows: the temperature rising speed is 5 ℃ / min; the temperature rising time is 20-25 min; the pressure rising speed is 0.7 bar / min; the temperature maintaining time at 130-150 ℃ and pressure of 12-14 bar is more than 10 min; the cooling time is 30 min; and the pressure releasing temperature is less than 50 ℃.

24. The method of claim 23, wherein the glass is prepared by a method comprising: The liquid crystal is filled into the gap through the liquid crystal filling port of the stacked film layer structure in the vacuum chamber at room temperature, and the process comprises the following steps: The vacuum chamber is vacuumized to below 1 pa; The stacked film layer structure after lamination is placed on the liquid crystal tank containing liquid crystal, and the liquid crystal filling port of the stacked film layer structure is extended into the liquid crystal in the liquid crystal tank, and the liquid crystal filling port is a capillary tube, so that the liquid crystal is filled into the gap under the action of vacuum capillary suction.

25. The method of claim 24, wherein the glass is prepared by a method comprising: The first flexible substrate comprises a first flexible base and a first electrode layer formed thereon; and the second flexible substrate comprises a second flexible base and a second electrode layer formed thereon. The first electrode layer also extends beyond the edge sealing structure and forms a first binding electrode; and the second electrode layer also extends beyond the edge sealing structure and forms a second binding electrode. The preparation method further comprises: binding connection of the first binding electrode and the second binding electrode with a driving circuit respectively, so that the driving circuit provides driving signals for the first binding electrode and the second binding electrode respectively.

26. The method of claim 25, wherein the glass is prepared by a method comprising: The driving circuit is bound connected with the first binding electrode and the second binding electrode respectively by using anisotropic conductive adhesive film. The diameter of the conductive particles in the anisotropic conductive adhesive film is greater than 10 µm; the thickness of the anisotropic conductive adhesive film is greater than 20 µm; the temperature during the binding connection is 200-320 degrees; the pressure during the binding connection is 2-5 Kgf; and the time length of the binding connection is 10-20 s.

27. The method of claim 26, wherein the glass is prepared by a process comprising: The method further comprises: Printing ink on the four peripheral frame areas of the dimmable glass; The width of the frame area of the printed ink is 5-15 mm.

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