CN116338989A

CN116338989A - Composite glass with dimming function, preparation method and vehicle comprising composite glass

Info

Publication number: CN116338989A
Application number: CN202310291856.8A
Authority: CN
Inventors: 王文海; 何建平; 郑国新
Original assignee: Fuyao Glass Industry Group Co Ltd
Current assignee: Fuyao Glass Industry Group Co Ltd
Priority date: 2023-03-23
Filing date: 2023-03-23
Publication date: 2023-06-27

Abstract

The invention discloses composite glass with a dimming function, a preparation method and a vehicle comprising the composite glass. The composite glass comprises an inner glass plate, an outer glass plate and a dimming film clamped between the inner glass plate and the outer glass plate; the dimming film has a zonal dimming function and is connected with an external control circuit through a flexible electric connecting element; the flexible electrical connection element extends out of the composite glass and bends such that the control circuit is secured to the outside surface of the inner or outer glass plate. The composite glass provided by the invention realizes the function of dimming in any partition, solves the problems that the dark state transmittance is high and the electrodeless dimming function is difficult to be applied commercially, and can realize the display of text or pattern information without additional integration of a display screen. The preparation method of the invention provides a reliable combination method of the dimming film with the flexible electric connecting element and the control circuit and the glass substrate, and a plurality of kinds of composite glass with dimming, touch control and display functions are prepared.

Description

Composite glass with dimming function, preparation method and vehicle comprising composite glass

Technical Field

The invention relates to the field of vehicle glass, in particular to composite glass with a dimming function, a preparation method and a vehicle comprising the composite glass.

Background

The dimming car window is a novel photoelectric car window which is formed by compounding a dimming functional layer into the middle of the car window and controlling the visible light transmittance of the car window through controlling voltage or current. Currently, the common dimming car window mostly adopts Polymer Dispersed Liquid Crystal (PDLC), electrochromic (EC), SPD (suspended particle device), GH-LC (guest-host dye liquid crystal) and other technologies. However, the dimming vehicle window which can be primarily produced in mass at present can only realize the overall control of the visible light transmittance of the vehicle window (as shown in fig. 1), and does not have a partition block control function. In the development of the vehicle window with the zone dimming function, the individual control can be realized only according to the preset rows or columns (as shown in fig. 2 and 3), the fine arbitrary zone control cannot be performed according to the diversified wishes of the passengers (as shown in fig. 4), and the display function on the vehicle window cannot be realized.

With the increasingly obvious and definite trend of automobile intellectualization, the demands of consumers for window zoning dimming are also increasingly diversified and refined. As shown in fig. 5, the current zone dimming technology mostly adopts the following operations based on the entire dimming film that has been processed so as to implement the zone dimming function: 1) Partitioning the transparent conductive layer 1; 2) The part of each transparent conductive layer 1 extending to the edge of the membrane is electrically connected with the opaque low-sheet-resistance conductive material 2; 3) Leading out and collecting the opaque low-sheet-resistance conductive material 2; 4) The opaque low sheet resistance conductive material 2 is connected to an external controller 3, and the like. Because of the limitation of the partition of the ITO conductive layer, the connection of the low-sheet-resistance conductive material and the transparent conductive material, wiring arrangement and the like, great difficulty exists in the improvement of the refinement of the partition.

In addition, the dark state transmittance of the existing dimming technology is more than 1%, the dark state transmittance of the partial dimming technology can be about 0.5%, the problem that the dark state transmittance is not high still exists, and certain defects exist in the aspects of shielding sunlight and protecting privacy in a vehicle.

In addition, as the change range of external environment light is extremely large along with different seasons and time, if the dark state transmittance of the dimming layer is less than 0.1 percent and the dimming layer has the electrodeless dimming function, passengers can adjust the transmittance in real time according to the change condition of the external environment light so as to realize sunshade, protect the privacy in the vehicle, observe the organic combination of several functions such as the environment outside the vehicle and the like. However, in the conventional voltage modulation dimming technology, for example, a small voltage change in a certain area exists in a PDLC (polymer dispersed liquid crystal), an SPD (suspended particle device), a GH-LC (guest-host dye liquid crystal) and the like, so that the transmittance is suddenly changed (as shown in fig. 6), and the voltage transmittance curve fluctuates within a certain range with the change of the use environment temperature. The above situation results in that if electrodeless dimming is to be realized, the dimming film control circuit needs to realize accurate control of voltage within a certain small range, and real-time compensation is required according to the ambient temperature and the like, thereby resulting in a relatively complex circuit design, low reliability and high price. In practical applications, although the transmittance of the dimming layer has a certain variation range, the applicable conditions are only maximum and minimum transmittance, and the commercial application of the electrodeless dimming is difficult.

Because the prior art can only realize rough regional dimming control, when the product needs to overlap the touch control function so as to adjust the dimming function through touch control, the proper operation area, operation method and other prompts cannot be provided only by the dimming layer, and the additional integrated display technology is required, so that the complexity, the total thickness and the cost of the product are further increased. In addition, the existing active light-emitting display technology, such as OLED, mini-LED and the like, has the problem that the display content cannot be seen clearly in daytime when the active light-emitting display technology is directly used for a vehicle window due to the fact that the light-emitting brightness is different in order of magnitude from natural light. If the display brightness is forcibly increased, there are reliability problems such as a shortened lifetime, increased power consumption, and increased heat generation. Conventional flat panel display type products, such as LCD, OLED, etc., are in the form of glass 4 with Chip On Film (COF) 5 with Printed Circuit Board (PCB) 6 (as shown in fig. 7). Because the surface shapes of components such as the flip chip film, the printed circuit board and the like are rugged and are easy to damage when being subjected to external force, the bonding with the traditional vehicle window has a plurality of difficulties. In addition, the LCD product glass portion is prone to block display failure (Mura) when pressed by uneven external force. The conventional vehicle window is easy to form partial uneven extrusion on the LCD product integrated in the interior due to the arc surface modeling and the glass anastomosis degree problem, so that poor block display is formed.

Disclosure of Invention

The invention aims to provide composite glass with a dimming function, a preparation method and a vehicle comprising the composite glass.

The composite glass can realize the function of random zonal dimming according to various wishes, solves the problems that the dark state transmittance is higher and the electrodeless dimming function is difficult to be applied commercially, and can realize the display of some text or pattern information without additionally integrating a display screen, thereby giving necessary prompt and assistance to an operator when necessary.

The preparation method of the invention provides a reliable combination method of the dimming film with the flexible electric connecting element and the control circuit and the glass substrate, and prepares a plurality of composite glass structures with dimming, touch control and display functions.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

in one aspect, the present invention provides a composite glass having a dimming function, the composite glass comprising: an inner glass plate, an outer glass plate, and a light adjusting film interposed between the inner glass plate and the outer glass plate;

the dimming film has a zonal dimming function and is connected with an external control circuit (preferably a Printed Circuit Board (PCB)) through a flexible electric connecting element;

The flexible electric connecting element extends out of the composite glass and is bent so that the control circuit is fixed on the outer side surface of the inner glass plate or the outer glass plate;

the edges of the inner glass sheet are tapered relative to the edges of the outer glass sheet.

According to the composite glass of the present invention, preferably, the dimming film has a plurality of gridded partitions, which can be independently controlled so as to have a partition dimming function.

According to the composite glass of the present invention, preferably, the light adjusting film includes a first substrate, a first electrode, a visible light transmittance adjusting material, a second electrode, and a second substrate stacked in this order;

the second electrode and the visible light transmittance adjusting material are correspondingly arranged into micron-sized meshed partitions, gaps in the micron-sized meshed partitions of the second electrode and the periphery of the second electrode are provided with low-sheet-resistance conductive material networks, and each partition of the second electrode is connected with the low-sheet-resistance conductive material network; the low-sheet-resistance conductive material network is gathered at the edge of the dimming film and is connected with an external control circuit through a flexible electric connecting element.

The side length of the micron-sized gridding partition is preferably 30-3000 microns, and is generally square.

The low-sheet-resistance conductive material which is distributed transversely and longitudinally in the low-sheet-resistance conductive material network is prevented from conducting at the nodes which are mutually intersected by using a barrier material. The low-square-resistance conductive materials distributed transversely are responsible for selecting a row of micron-sized meshed partition second electrodes connected with the low-square-resistance conductive materials through high level, and the low-square-resistance conductive materials distributed longitudinally are responsible for adjusting the voltage of a column of micron-sized meshed partition second electrodes connected with the low-square-resistance conductive materials. The second electrode and the first electrode form a capacitor structure, so that voltage can be stored and kept unchanged in a certain time, and the transmittance is prevented from changing immediately after power failure. By reasonably selecting the scanning frequency of the transverse and longitudinal low-sheet-resistance conductive materials, the real-time accurate control of the transmittance of any one partition of the whole dimming film can be realized.

Preferably, the composite glass according to the present invention is characterized in that the visible light transmittance adjusting material is liquid crystal, PDLC (polymer dispersed liquid crystal), suspended Particles (SPD), dye liquid crystal or other light adjusting material that can change transmittance under the action of voltage or current.

According to the composite glass of the present invention, preferably, the flexible electrical connection element is a flexible printed circuit board (FPC) or a Chip On Film (COF). The connection between the flexible electrical connection element and the control circuit is achieved by means of bonding.

In the above light modulation film, the first substrate and the second substrate may be glass-based or high molecular polymer.

The dimming film provided by the invention adopts the micron-sized meshed partitions and the corresponding low-sheet-resistance conductive material grids, so that independent control of each specific grid partition can be realized, the function of dimming any partition according to various wishes can be realized, and when necessary, some text or pattern information can be displayed through the combination of adjacent grid partitions to make necessary prompts and assistance for operators.

The composite glass can be particularly used as vehicle window glass, and can realize the function of random zonal dimming according to various wishes by adopting the dimming film, and can realize the display of some text or pattern information without additionally integrating a display screen, thereby giving necessary prompts and assistance to operators when necessary.

The display principle of the composite glass is based on the transmittance difference of visible light transmittance adjusting materials of the gridding subareas, and a combined display screen is not needed; and the problem that the active luminous display technology cannot be seen clearly due to too strong background light in the daytime is solved. The more obvious the information is displayed in the environment with stronger light rays; under the condition of weak light lines such as at night, the window dimming requirement does not exist, and the prompt does not need to be displayed.

According to the composite glass of the present invention, preferably, the distance of the inward shrinkage is 1 to 10mm; i.e. the inner glass pane is 1 to 10mm, preferably 1 to 2mm smaller than the outer glass pane in contour.

According to the composite glass of the present invention, preferably, the light adjusting film is bonded to one of the inner glass plate and the outer glass plate by a bonding material, and bonded to the other glass plate by a liquid optically transparent adhesive (LOCA). More preferably, the bonding material is selected from PVB, EVA, TPU, SGP or Liquid Optically Clear Adhesive (LOCA) and the like.

According to the composite glass of the present invention, preferably, the light adjusting film is bonded to the outer glass plate by a bonding material, and bonded to the inner glass plate by a liquid optically transparent adhesive (LOCA); the bonding material is selected from PVB, EVA, TPU, SGP and the like. The light adjusting film and the outer glass plate are made of PVB, EVA, SGP and other bonding materials with strong impact resistance, so that the safety performance of the vehicle window is ensured; and the liquid LOCA with softer material is adopted between the dimming film and the inner glass plate for filling and then curing, so that the extrusion force on two sides of the dimming film is ensured to be smaller, and the occurrence of poor display of the block is avoided.

According to the composite glass of the present invention, the flexible electrical connection element of the dimming film extends out of the composite glass and is bent such that the control circuit (e.g., printed circuit board PCB) is fixed on the outer side surface of the inner glass plate or the outer glass plate. The outer side surface refers to the surface facing the outer side of the composite glass, and the opposite surfaces of the inner and outer glass plates facing each other are inner side surfaces. Preferably, the control circuit is fixed to an outer side surface of the inner glass plate. When composite glass is used as window glass, the control circuit is fixed on the surface of the inner glass plate, which faces the interior of the vehicle, in a overturning manner, so that damage to components caused by vibration in the driving process is avoided, and the automobile window is convenient to radiate, simple in structure, convenient to implement and low in cost.

In addition, the control circuit is not fixed on the surface of the glass, so that the flexible electric connecting element and the control circuit are in a free state and fixed when in use and installation; for example, when used as a window glass, the glass is fixed to a sheet metal or an interior of a vehicle body.

According to the composite glass of the present invention, preferably, a notch is provided at a position of the edge of the inner glass plate corresponding to the flexible electric connection element, and the flexible electric connection element is bent through the notch, so that the control circuit is fixed on the outer side surface of the inner glass plate. The shape of the notch may be crescent or rectangular, etc., and more preferably, the maximum depth of the notch is 1 to 50mm, and still more preferably, 1 to 10mm. The flexible electric connecting element is turned to the outer side surface of the inner layer glass through the edge notch of the inner layer glass plate, and the edge of the inner layer glass plays a role in protecting the vulnerable flexible electric connecting element.

According to the composite glass of the present invention, preferably, the bonding material is retracted by 1 to 10mm with respect to the edge of the glass sheet where it is located; an edge seal is disposed around the periphery between the inner and outer glass sheets at the necked-in region of the bonding material, and the flexible electrical connection element extends out of the composite glass through the edge seal. The periphery of the bonding material is contracted inwards, and the edge sealing piece is manufactured on the surfaces of the inner glass plate and the outer glass plate, so that the bonding strength of the edge sealing piece can be improved, and the shearing force of the inner glass plate and the outer glass plate can be improved. More preferably, the edge seal comprises an upper layer and a lower layer at the position where the flexible electrical connection element passes through, and the flexible electrical connection element passes through between the upper layer and the lower layer; the edge seals are tightly bonded together except where the flexible electrical connection element passes. The arrangement of the edge sealing element can ensure good adhesion between the edge sealing element and glass, and can realize good adhesion between the edge sealing element and the flexible electric connecting element, so that air or moisture is prevented from penetrating.

According to the composite glass of the present invention, preferably, the edge seal is formed by applying a paste (room temperature vulcanized rubber, polyurethane rubber, silicone rubber, etc.) or a tape.

According to the composite glass disclosed by the invention, preferably, when the driving chip is arranged on the flexible electric connecting element, the distance between the driving chip and the edge of the composite glass is more than 10-20 mm, so that the driving chip is not covered by the adhesive used when the composite glass is used for connecting the window glass with the sheet metal of the vehicle body, and the problems of poor heat dissipation, dislocation and the like caused by covering the driving chip by the adhesive for connecting the sheet metal of the vehicle body are avoided. The electronic components on the control circuit should be arranged on one side surface of the control circuit far away from the composite glass, so that the smooth and non-convex side surface contacted with the composite glass is ensured, and the connection between the electronic components and the vehicle body is firmer.

According to the composite glass of the present invention, preferably, a protection cover is provided outside the control circuit to protect the driving chip and the control circuit; the protective cover is made of high heat conduction materials.

According to the composite glass disclosed by the invention, preferably, the inner glass plate and/or the outer glass plate are/is laminated glass, and the inside of the laminated glass can integrate various functions such as other types of dimming layers, atmosphere lamps, projection, display, touch control and the like, and can also be single PVB laminated glass so as to realize the functions of improving the shock resistance of a product, blocking ultraviolet rays and the like.

According to the composite glass of the present invention, preferably, the inner glass plate and the outer glass plate are laminated glass having polarizers inside, and the polarization directions of the two polarizers are 0 ° or 90 °; the light adjusting film has the function of adjusting the polarization state of transmitted light.

The dimming film with the function of adjusting the polarization state of transmitted light only adjusts the polarization angle of the light, and does not significantly absorb the light; it is possible to achieve a change in the polarization angle of light in one of the cases of power on and power off, while not changing the polarization angle of transmitted light in the other case. The dimming film can realize the dark state transmittance of <0.1% and the bright state transmittance of >20% through the angle matching of the dimming film and the two polaroids, and solves the problem of higher dark state transmittance. In addition, the dimming film with the function of adjusting the polarization state of transmitted light has stable response to voltage, and the problem of abrupt change of a transmittance voltage curve is avoided, so that the commercial application of the electrodeless dimming function is possible.

The composite glass can also adopt a single-layer polaroid and a dichroic dimming film, wherein the polarization direction of the single-layer polaroid and the polarization direction of the dimming film form 90 degrees. Specifically, the inner glass plate or the outer glass plate is laminated glass, and the single-layer polarizer may be integrated in the laminated glass.

The dichroic light control film significantly absorbs polarized light in one specific direction when energized or not energized, and does not act on polarized light in the other direction. The polarization direction of the single-layer polaroid is 90 degrees with the polarization direction of the dimming film, light passes through under one of the two conditions of power on and power off, and no light passes through under the other condition, so that the effect of adjusting light is achieved.

When the inner glass plate and/or the outer glass plate are/is single-layer glass, the polaroid can be combined on the opposite inner side surfaces of the single-layer glass through bonding materials, or the polaroid and the dimming film can be combined first, and then the dimming film with the polaroid is combined with the inner glass plate and the outer glass plate; when two polaroids are combined, the polarization directions of the two polaroids form 0 degree or 90 degrees, and the dimming film has the function of adjusting the polarization state of transmitted light; when the single-layer polaroids are combined, the polarization direction of the single-layer polaroids and the polarization direction of the dimming film form 90 degrees, and the dimming film has dichroism.

According to the composite glass provided by the invention, a touch control function can be realized by combining the touch control film. The touch film is integrated on the inner glass plate, and may specifically be an inner side surface or an outer side surface of the inner glass plate, preferably an inner side surface. When the inner glass plate is laminated glass, the touch control film can be integrated inside the laminated glass through a lamination process; when the inner glass plate is a single glass layer, the touch film may be combined with the inner side surface of the inner glass plate through an adhesive material. And combining the inner glass plate with the touch film with the outer glass plate or the dimming film after the touch film and the inner glass plate are combined. The flexible electric connecting element of the touch control film turns the control circuit to the outer surface of the inner glass plate to be fixed through the corresponding notch of the inner glass plate.

According to the composite glass of the present invention, the inner glass plate and the outer glass plate may be double curvature glass having the same profile. In addition, when the outer glass sheet is laminated glass, the inner glass sheet may be different in profile from the outer glass sheet, e.g., the inner glass sheet may be flat glass, or single curved glass having no curvature in the direction of travel, with the same or a similar curvature to the outer window. The outer glass plate is laminated glass, the inner glass plate is a combination of plane or single-curve glass, and the problem that the edge crease is formed by covering the hyperboloid glass with the plane dimming film can be well solved.

According to the composite glass of the present invention, preferably, the outer glass plate is laminated glass, and both sides of the light adjusting film are LOCAs. In the scheme, the dimming film does not need to pass through higher temperature and pressure in the preparation process of the composite glass, and the possibility is provided for combining some dimming films which are not resistant to temperature and pressure with the composite glass.

The third aspect of the present invention provides a method for producing the above composite glass, comprising the steps of:

bonding the inner glass plate or the outer glass plate and the dimming film through bonding materials to form an intermediate assembly; the flexible electric connecting element of the dimming film is bent and turned to the outer side surface of the glass plate, and is temporarily fixed on the outer side surface of the glass plate together with the control circuit; the bonding material is selected from PVB, EVA, TPU, SGP or Liquid Optically Clear Adhesive (LOCA);

The composite glass is formed by disposing a Liquid Optically Clear Adhesive (LOCA) and bonding another glass sheet to the above-described intermediate assembly by curing.

According to the production method of the present invention, preferably, the production method comprises the steps of:

sequentially stacking the inner glass plate or the outer glass plate, the bonding material and the dimming film to form an intermediate assembly; the flexible electric connecting element of the dimming film is bent and turned to the outer side surface of the glass plate, the flexible electric connecting element and the control circuit are temporarily fixed on the outer side surface of the glass plate, and the upper surface and the lower surface are covered by heat insulating materials; the bonding material is selected from PVB, EVA, TPU or SGP;

fixing the relative position of the intermediate assembly, then placing the intermediate assembly into a vacuum bag, and vacuumizing for a certain time; the vacuumizing time is increased along with the increase of the number of layers of the bonding materials, and the vacuumizing time is increased by 20-40 minutes approximately when one layer of the bonding materials is used;

subsequently feeding the vacuum bag into an autoclave and continuously maintaining the vacuum state in the vacuum bag; after a certain time of temperature and pressure (for example, 2 to 4 hours, the highest temperature is 100 to 120 ℃ and the pressure is 0 to 4 bar), the light modulation film is bonded with the glass plate, and the vacuum bag is removed; one surface of the light-adjusting film is adhered to the glass plate after the vacuum bag is dismantled, and the other surface of the light-adjusting film is in contact with air and is in a free state, so that the light-adjusting film is prevented from generating poor block display due to the fact that the two surfaces of the light-adjusting film are pressed;

Disposing an edge seal at the necked-in region of the bonding material, the edge seal having a height that is the distance between the inner and outer glass sheets; more than 2 glue pouring openings are reserved on the edge sealing piece;

fastening another glass plate on the adhesive edge sealing member to ensure a gap between the inner glass plate and the outer glass plate; after the edge sealing piece is solidified into a box, pouring liquid optically transparent adhesive (LOCA) through the adhesive pouring opening, solidifying, and sealing the adhesive pouring opening after solidifying;

separating the temporarily secured flexible electrical connection element and control circuitry from the glass sheet and removing the covered insulating material; bending the flexible electrical connection element and securing a control circuit to an outside surface of the inner glass plate.

According to the preparation method of the invention, preferably, in the process of forming the intermediate assembly, the shrinking-in area of the bonding material is supplemented with the edge of the glass plate by adopting a separation material with the same height as the bonding material so as to prevent glue overflow.

According to the preparation method of the present invention, preferably, when the thickness of the light modulation film exceeds 0.2mm, the space between the periphery of the light modulation film and the edge of the glass plate is filled with the isolation material having the same height as the light modulation film. More preferably, in order to ensure that the dimming film and the bonding material are not deformed greatly in the processing process, a layer of isolation material and another piece of upper cover glass with the same molded surface are sequentially added above the dimming film.

According to the preparation method of the present invention, preferably, the isolating material is polytetrafluoroethylene or silica gel strips, etc.

According to the preparation method, the upper surface and the lower surface of the control circuit and the flexible electric connecting element are covered by the heat insulation material, so that the control circuit with uneven surfaces and the flexible electric connecting element can be prevented from being damaged in the high-temperature and high-pressure process, and the control circuit and the flexible electric connecting element can be prevented from being polluted by overflowed bonding materials. Preferably, the heat insulation material is a flexible heat-resistant material such as silica gel.

According to the manufacturing method of the present invention, preferably, the edge seal is arranged by means of a tape (room temperature vulcanized rubber, polyurethane rubber, silicone rubber, etc.) or a tape-sticking method.

According to the manufacturing method of the present invention, preferably, the edge seal is divided into upper and lower layers at a position where the flexible electric connection element passes through the edge seal, and the flexible electric connection element passes between the two layers. The upper and lower layers of the edge seal should be tightly bonded together except where the flexible electrical connection element passes through to prevent air or moisture from passing through.

According to the preparation method of the present invention, preferably, when another glass plate is fastened to the adhesive edge sealing member, an object of a fixed thickness is inserted through an adhesive tape of a preset fixed thickness or an external mold or through a reserved glue-pouring port, so as to ensure a gap between the inner glass plate and the outer glass plate.

According to the manufacturing method of the present invention, preferably, the temporary fixing method of the control circuit on the outer side surface of the inner glass plate is adhered using a single-sided or double-sided adhesive tape which is easily removed.

According to the preparation method of the present invention, preferably, the curing of the Liquid Optically Clear Adhesive (LOCA) is achieved by irradiation with a certain temperature or ultraviolet light.

According to the preparation method of the present invention, preferably, the preparation method further includes a step of providing a protection cover outside the control circuit to protect the driving chip and the control circuit; the protective cover is made of high heat conduction materials.

According to the manufacturing method of the present invention, when the outer glass plate is a laminated glass, the light adjusting film is first combined with the inner glass plate, and then LOCA may also be selected as a bonding material between the light adjusting film and the inner glass plate.

The specific process comprises the following steps: edge sealing pieces are arranged on the periphery of the dimming film or on the periphery of the corresponding area of the dimming film on the inner glass plate, the height of each edge sealing piece is equal to the thickness of a preset LOCA layer, and more than two glue filling openings are reserved on each edge sealing piece. Bonding the dimming film and the inner glass plate through an edge sealing piece, and pouring liquid optically transparent adhesive (LOCA) through the adhesive pouring opening and curing after the edge sealing piece is cured into a box;

Then arranging an edge sealing piece in a region with 1-10 mm of the edge of the inner glass plate with the dimming film, wherein the height of the edge sealing piece is the distance between the inner glass plate and the outer glass plate; more than 2 glue pouring openings are reserved on the edge sealing piece;

fastening the outer glass plate to the adhesive edge seal to ensure a gap between the inner and outer glass plates; and after the edge sealing piece is solidified into a box, pouring liquid optically transparent adhesive (LOCA) through the adhesive pouring opening, solidifying, and sealing the adhesive pouring opening after solidifying.

At this time, the outer glass plate is laminated glass, and LOCA is arranged at both sides of the dimming film; the dimming film does not need to pass through higher temperature and pressure in the preparation process of the composite glass, and the possibility is provided for combining a plurality of dimming films which are not resistant to temperature and pressure with the composite glass.

When the outer glass plate is laminated glass and the dimming film is combined with the inner glass plate first, the inner glass plate can be different from the outer glass plate in profile, for example, the inner glass plate can be plane glass or single-curved glass with curvature change in the driving direction being the same as or close to that of an outer car window and no curvature in the vertical driving direction.

In yet another aspect, the present invention provides a vehicle comprising the above composite glass. Specifically, the inner glass sheet of the composite glass faces into the vehicle.

Drawings

Fig. 1 is a schematic diagram of overall control of a window with dimming function in the prior art.

Fig. 2 is a schematic diagram of a prior art window with dimming function for controlling the vehicle in separate rows.

Fig. 3 is a schematic diagram of a prior art window with dimming function for split control.

Fig. 4 is a schematic diagram of arbitrary zone control of the window glass with dimming function of the present invention.

Fig. 5 is a schematic structural diagram of a partition dimming technique in the prior art.

Fig. 6 is a graph showing voltage transmittance of a conventional voltage modulation type dimming technique.

Fig. 7 is a schematic structural diagram of a conventional flat panel display type product.

Fig. 8 is a schematic view of a dimming film structure with arbitrary zone dimming function according to the present invention.

Fig. 9 is a schematic view of a composite glass with zonal dimming function according to a preferred embodiment of the present invention.

Fig. 10 is a schematic view of a composite glass with zonal dimming function according to another preferred embodiment of the present invention.

Fig. 11 is a partial schematic view of a more preferred version of the composite glass base of fig. 9.

Fig. 12 is a schematic view of a more preferred version of the composite glass base of fig. 10.

Fig. 13 is a schematic view of an intermediate assembly in a preferred manufacturing process of the present invention.

Fig. 14 is a schematic view of an intermediate assembly in another preferred manufacturing process of the present invention.

Reference numerals illustrate:

1-transparent conductive layer, 2-opaque low sheet resistance conductive material, 3-controller, 4-glass, 5-Chip On Film (COF), 6-Printed Circuit Board (PCB);

30-dimming film, 31-first substrate, 32-first electrode, 33-visible light transmittance adjusting material, 34-low-sheet-resistance conductive material network, 35-second electrode, 36-second substrate, 37-flexible electric connecting element, 38-control circuit, 39-driving chip;

10-inner glass plates, 20-bonding materials, 40-liquid optically transparent adhesive (LOCA), 50-outer glass plates, 60-edge seals, 70-protective covers and 80-bonding agents for vehicle body sheet metal connection;

71-an adhesive for fixing a PCB, 72-a heat insulating material, 73-a heat insulating material, 74-an upper cover glass.

Detailed Description

In order to more clearly illustrate the present invention, the present invention will be further described with reference to preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and that this invention is not limited to the details given herein.

The composite glass provided by the invention can realize the function of random zonal dimming according to various will, solves the problem of higher dark state transmittance and the problem of difficult commercial application of the electrodeless dimming function, and can realize the display of some text or pattern information without additionally integrating a display screen, thereby giving necessary prompt and assistance to operators when necessary. The preparation method of the invention provides a reliable combination method of the dimming film with the flexible electric connecting element and the control circuit and the window glass, and prepares a plurality of window glass structures with dimming, touch control and display functions.

As shown in fig. 8, the present invention firstly provides a dimming film having a zone dimming function, the dimming film 30 includes a first substrate 31, a first electrode 32, a visible light transmittance adjusting material 33, a second electrode 35, and a second substrate 36 stacked in this order;

the second electrode 35 and the visible light transmittance adjustment material 33 are correspondingly arranged in micro-scale grid-like areas, and the side length of each area is preferably 30 to 3000 micrometers, and the areas are usually square. The gaps in the micron-sized meshed partitions of the second electrode 35 and the periphery of the second electrode 35 are provided with a low-sheet-resistance conductive material network 34, and each partition of the second electrode 35 is connected with the low-sheet-resistance conductive material network 34. The conductive material distributed transversely and longitudinally in the network of low sheet resistance conductive material avoids conduction at the nodes of the interdigitation by using a barrier material. The low-square-resistance conductive materials distributed transversely are responsible for selecting one row of meshed partition second electrodes connected with the low-square-resistance conductive materials through high level, and the low-square-resistance conductive materials distributed longitudinally are responsible for adjusting the voltage of one column of meshed partition second electrodes connected with the low-square-resistance conductive materials. The second electrode and the first electrode form a capacitor structure, so that voltage can be stored and kept unchanged in a certain time, and the transmittance is prevented from changing immediately after power failure. By reasonably selecting the scanning frequency of the transverse and longitudinal low-sheet-resistance conductive materials, the real-time accurate control of the transmittance of any one partition of the whole dimming film can be realized. The network of low sheet resistance conductive material 34 is gathered at the edge of the dimming film and connected to an external control circuit 38, such as a Printed Circuit Board (PCB), by a flexible electrical connection element 37, the control circuit 38.

The dimming film 30 of the invention can realize independent control of each specific grid partition due to the adoption of the micron-sized grid partition and the corresponding conductive material grid, so that the function of dimming any partition according to various wishes is realized, and when necessary, some text or pattern information can be displayed through the combination of adjacent grid partitions to give necessary prompts and assistance to an operator.

The present invention provides a composite glass with a dimming function, as shown in fig. 9 and 10, the composite glass comprising: an inner glass plate 10, an outer glass plate 50, and a light modulation film 30 interposed between the inner glass plate 10 and the outer glass plate 50; the dimming film 30 has a zone dimming function and is connected with an external control circuit 38 through a flexible electrical connection element 37; the flexible electrical connection element 37 extends out of the composite glass and is bent such that the control circuit 38 is fixed to the outer side surface of the inner glass pane 10 or outer glass pane 50; the edges of the inner glass sheet 10 are retracted relative to the edges of the outer glass sheet 50.

Preferably, the dimming film 30 has a plurality of gridded partitions, which can be independently controlled to have a partition dimming function. As shown in fig. 8, the specific light modulation film structure preferably includes a first substrate 31, a first electrode 32, a visible light transmittance adjusting material 33, a second electrode 35, and a second substrate 36 stacked in this order;

The second electrode 35 and the visible light transmittance adjustment material 33 are correspondingly arranged in micro-scale grid-like areas, and the side length of each area is preferably 30 to 3000 micrometers, and the areas are usually square. The gaps in the micron-sized meshed partitions of the second electrode 35 and the periphery of the second electrode 35 are provided with a low-sheet-resistance conductive material network 34, and each partition of the second electrode 35 is connected with the low-sheet-resistance conductive material network 34. The conductive material distributed transversely and longitudinally in the network of low sheet resistance conductive material avoids conduction at the nodes of the interdigitation by using a barrier material. The low-square-resistance conductive materials distributed transversely are responsible for selecting one row of meshed partition second electrodes connected with the low-square-resistance conductive materials through high level, and the low-square-resistance conductive materials distributed longitudinally are responsible for adjusting the voltage of one column of meshed partition second electrodes connected with the low-square-resistance conductive materials. The second electrode and the first electrode form a capacitor structure, so that voltage can be stored and kept unchanged in a certain time, and the transmittance is prevented from changing immediately after power failure. By reasonably selecting the scanning frequency of the transverse and longitudinal low-sheet-resistance conductive materials, the real-time accurate control of the transmittance of any one partition of the whole dimming film can be realized. The network 34 of low sheet resistance conductive material is gathered at the edge of the dimmer film and connected to an external control circuit 38 by a flexible electrical connection element 37.

Wherein the first substrate 31 and the second substrate 36 may be glass-based or high molecular polymer. The visible light transmittance adjusting material 33 may be liquid crystal, PDLC (polymer dispersed liquid crystal), suspended Particles (SPD), dye liquid crystal, or other light adjusting materials that can change transmittance under the action of voltage or current. The flexible electrical connection element 37 is a flexible printed circuit board (FPC) or a Chip On Film (COF). The connection between the flexible electrical connection element 37 and the control circuit 38 is achieved by means of bonding.

The dimming film 30 adopted by the composite glass can realize independent control of each specific grid partition due to the adoption of the micron-sized grid partition and the corresponding low-sheet-resistance conductive material grid, so that the function of dimming any partition according to various wishes is realized, and when necessary, some text or pattern information can be displayed through the combination of adjacent grid partitions to make necessary prompts and assistance for operators.

The composite glass of the invention can be used as the window glass, and can realize the function of random zone dimming according to various wishes by adopting the dimming film 30 with random zone dimming function, and can realize the display of some text or pattern information without additionally integrating a display screen, thereby giving necessary prompt and assistance to operators when necessary. In addition, the display principle is based on the transmittance difference of the visible light transmittance adjusting materials of the gridding subareas, and a combined display screen is not needed; and the problem that the active luminous display technology cannot be seen clearly due to too strong background light in the daytime is solved. The more obvious the information is displayed in the environment with stronger light rays; under the condition of weak light lines such as at night, the window dimming requirement does not exist, and the prompt does not need to be displayed.

Preferably, the edges of the inner glass sheet 10 are retracted 1-10 mm, preferably 1-2 mm, relative to the edges of the outer glass sheet 50.

As shown in fig. 9 and 10, regarding the coupling manner between the light modulation film 30 and the inner and outer glass plates 10 and 50: the light adjusting film 30 is bonded to one of the inner glass plate 10 and the outer glass plate 50 through a bonding material 20, and bonded to the other glass plate through a liquid optically transparent adhesive (LOCA) 40. The adhesive material 20 may be PVB, EVA, TPU, SGP, or the like, or may be Liquid Optically Clear Adhesive (LOCA), or the like; that is, both side surfaces of the light control film 30 may be both liquid optically transparent adhesive (LOCA), or one side surface may be an adhesive material such as PVB, EVA, TPU or SGP, and the other side surface may be liquid optically transparent adhesive (LOCA). Meanwhile, when the glass is liquid optical transparent adhesive (LOCA), higher temperature and higher pressure can be omitted when the composite glass is prepared, so that the possibility is provided for combining a plurality of temperature-intolerant and pressure-resistant dimming films with the composite glass. When the adhesive material such as PVB, EVA, TPU or SGP is used as one side surface and the liquid optically transparent adhesive (LOCA) is used as the other side surface, the light adjusting film 30 is bonded with one of the glass substrates through PVB, EVA, TPU or SGP adhesive material, bonding is achieved through lamination process, and then the other glass substrate is bonded with the other glass substrate through arrangement and solidification of the liquid optically transparent adhesive (LOCA).

When the composite glass is used as a window glass, it is preferable that the light control film 30 and the outer glass plate 50 are bonded by a bonding material 20 (PVB, EVA, TPU or SGP, etc.) and the inner glass plate 10 are bonded by a liquid optically transparent adhesive (LOCA) 40, that is, the solution of fig. 10 is preferable. The dimming film 30 and the outer glass plate 50 are made of bonding materials such as PVB, EVA, SGP with strong shock resistance, so that the safety performance of the vehicle window is ensured; the liquid LOCA with softer material is adopted between the dimming film 30 and the inner glass plate 10 for filling and then curing, so that the extrusion force on two sides of the dimming film is ensured to be smaller, and the occurrence of poor display of the block is avoided.

Specifically, the flexible electrical connection element 37 of the light adjusting film 30 extends out of the composite glass and is bent such that the control circuit 38 is fixed on the outer side surface of the inner glass plate 10 or the outer glass plate 50. The outer side surface refers to the surface facing the outer side of the composite glass, and the opposite surfaces of the inner and outer glass plates facing each other are inner side surfaces. More preferably, as shown in fig. 9 and 10, the control circuit 38 is fixed to the outer side surface of the inner glass sheet 10. When the composite glass is used as the window glass, the control circuit 38 is fixed on the surface of the inner glass plate 10 facing the vehicle in a turnover manner, so that damage to components possibly caused by vibration in the driving process is avoided, and the automobile window is convenient to radiate heat, simple in structure, convenient to implement and low in cost.

The control circuit 38 may not be fixed to the glass surface, and the flexible electric connection element 37 and the control circuit 38 may be fixed in a free state when mounted; for example, when used as a window glass, the glass is fixed to a sheet metal or an interior of a vehicle body.

As for the preferred embodiment of the fixing of the control circuit 38 to the inner glass plate 10, it is further preferred that a notch (the cross section of the maximum depth of the notch is shown in fig. 9 and 10) is provided at the position corresponding to the edge of the inner glass plate 10 and the flexible electric connection element 37, and the flexible electric connection element 37 is bent through the notch, so that the control circuit 38 is fixed to the outer surface of the inner glass plate. The shape of the notch may be crescent or rectangular, etc., and more preferably, the maximum depth of the notch is 1 to 50mm, and still more preferably, 1 to 10mm. The flexible electric connecting element 37 is turned to the outer side surface of the inner glass 10 through the edge notch of the inner glass 10, and the edge of the inner glass plays a role in protecting the fragile flexible electric connecting element 37.

As shown in fig. 9 and 10, the adhesive material 20 is preferably retracted by 1 to 10mm with respect to four sides of the glass plate (the inner glass plate 10 or the outer glass plate 50) where it is positioned; an edge seal 60 is disposed around the periphery between the inner and

outer glass sheets

10 and 50 in the region of the inward contraction of the bonding material 20, and the flexible electrical connection element 37 extends out of the composite glass through the edge seal 60 and is bent to secure the control circuit 38 to the outside surface of either glass sheet, preferably to the outside surface of the inner glass sheet 10, as shown in fig. 9 and 10. The periphery of the bonding material is contracted inwards, and the edge sealing piece 60 is manufactured on the surfaces of the inner glass plate and the outer glass plate, so that the bonding strength of the edge sealing piece 60 can be improved, and the shearing force of the inner glass plate and the outer glass plate can be improved.

More preferably, the edge seal 60 includes upper and lower layers where the flexible electrical connection element 37 passes through, the flexible electrical connection element passing between the upper and lower layers; the edge seals are tightly bonded together except where the flexible electrical connection element passes. This arrangement of the edge seal 60 ensures both good adhesion of the edge seal 60 to the glass substrate and good adhesion of the edge seal 60 to the flexible electrical connection element 37, preventing penetration of air or moisture.

The edge seal 60 is preferably formed by applying glue (room temperature vulcanizable rubber, polyurethane glue, silicone glue, etc.) or tape.

As shown in fig. 11 and 12, when the driving chip 39 is provided on the flexible electric connection element 37, the driving chip 39 is preferably spaced from the edge of the composite glass by 10 to 20mm or more, so that the adhesive used when the composite glass is used as the vehicle window glass and the vehicle body sheet metal is not covered with the driving chip 39, and the problems of poor heat dissipation, dislocation and the like caused by the covering of the driving chip 39 with the adhesive 80 for the vehicle body sheet metal connection are avoided. The electronic components on the control circuit 38 should be arranged on a side surface of the control circuit 38 far away from the composite glass, so that the side surface contacted with the composite glass is smooth and free from bulges, and the connection between the electronic components and the vehicle body is firmer. Preferably, a protective cover 70 is arranged outside the control circuit 38 to protect the driving chip 39 and the control circuit 38; the protective cover 70 is made of a high heat conductive material.

Preferably, the inner glass plate 10 and/or the outer glass plate 50 are laminated glass, and the inside of the laminated glass can integrate various functions such as other types of dimming layers, atmosphere lamps, projection, display, touch control and the like, and can also be pure PVB laminated glass to realize the functions of improving the shock resistance of products, blocking ultraviolet rays and the like.

Preferably, the inner glass plate 10 and the outer glass plate 50 are laminated glass having polarizers inside, and the polarization directions of the two polarizers are 0 ° or 90 °; the light control film 30 in the composite glass has a function of adjusting the polarization state of transmitted light.

The composite glass may also adopt only a single-layer polarizer and a dichroic dimming film, wherein the polarization direction of the single-layer polarizer is 90 degrees to the polarization direction of the dimming film 30. In particular, the inner glass plate 10 or the outer glass plate 50 is a laminated glass, and a single-layer polarizer may be integrated in the laminated glass. The dichroic light control film significantly absorbs polarized light in one specific direction when energized or not energized, and does not act on polarized light in the other direction. The polarization direction of the single-layer polaroid is 90 degrees with the polarization direction of the dimming film, light passes through under one of the two conditions of power on and power off, and no light passes through under the other condition, so that the effect of adjusting light is achieved.

When the inner glass plate 10 and/or the outer glass plate 50 are/is single-layer glass, the polarizers can be combined on the opposite inner side surfaces of the single-layer glass through bonding materials, or the polarizers and the dimming film 30 can be combined first, and then the dimming film with the polarizers is combined with the inner glass plate 10 and the outer glass plate 50; when two polarizers are combined, the polarization directions of the two polarizers are 0 degrees or 90 degrees, and the dimming film 30 has the function of adjusting the polarization state of transmitted light; when the single-layer polarizers are combined, the single-layer polarizers are 90 ° to the polarization direction of the light modulation film 30, and the light modulation film 30 has dichroism.

The inner glass pane 10 and the outer glass pane 50 may be double curvature glass with the same profile according to the composite glass of the present invention. In addition, when the outer glass sheet 50 is a laminated glass, the inner glass sheet 10 may be different in profile from the outer glass sheet 50, for example, the inner glass sheet 10 may be a flat glass or a single curved glass having no curvature in the direction of travel and the curvature change in the direction of travel is the same as or close to that of the outer window. The outer glass plate 50 is laminated glass, and the inner glass plate 10 is a combination of plane or single curved glass, so that the problem that the edge crease is formed when the plane dimming film is covered on the hyperboloid glass can be solved well.

In a preferred embodiment, the outer glass plate 50 is a laminated glass, and LOCA is provided on both sides of the light modulation film 30. In the scheme, the dimming film does not need to pass through higher temperature and pressure in the preparation process of the composite glass, and the possibility is provided for combining some dimming films which are not resistant to temperature and pressure with the composite glass.

The preparation method of the composite glass comprises the following steps:

bonding the inner glass plate 10 or the outer glass plate 50 and the dimming film 30 through the bonding material 20 to form an intermediate assembly; wherein the flexible electric connection element 37 of the light adjusting film 30 is bent and turned to the outer side surface of the glass plate, and is temporarily fixed to the outer side surface of the glass plate together with the control circuit 38; the bonding material 20 is selected from PVB, EVA, TPU, SGP or Liquid Optically Clear Adhesive (LOCA);

When the bonding material 20 is PVB, EVA, TPU or SGP, bonding is accomplished using a lamination process to form the intermediate assembly. When the adhesive material 20 is a Liquid Optically Clear Adhesive (LOCA), the intermediate assembly is formed by disposing and curing the Liquid Optically Clear Adhesive (LOCA) as in the second step; at this time, the two side surfaces of the light-adjusting film 30 are bonded with the glass substrate through liquid optical transparent adhesive (LOCA), and higher temperature and pressure are not needed in the preparation process, so that the possibility is provided for combining some light-adjusting films which are not resistant to temperature and pressure with the composite glass.

In a preferred embodiment, the preparation method specifically comprises the following steps:

1) As shown in fig. 13, the inner glass plate 10 or the outer glass plate 50, the bonding material 20 (PVB, EVA, TPU or SGP), and the light modulation film 30 are sequentially stacked to form an intermediate assembly; wherein, the bonding material 20 is retracted by 1-10 mm relative to the four edges of the glass plate, and the retracted region is preferably supplemented with a spacer material 73 (preferably polytetrafluoroethylene or silica gel strip, etc.) with the same height as the bonding material 20 to prevent glue overflow. The flexible electrical connection element 37 of the light adjusting film 30 is bent and turned over to the outer side surface of the glass plate, and is temporarily fixed to the outer side surface of the glass plate together with the control circuit 38 (the temporary fixing method is, for example, bonding by using a single-sided or double-sided adhesive tape which is easy to detach), and the upper and lower surfaces are covered by using the heat insulation material 72 (flexible heat-resistant material such as silica gel skin), so that the control circuit 38 and the flexible electrical connection element with uneven surfaces can be prevented from being damaged in the high-temperature and high-pressure process, and the control circuit 38 and the flexible electrical connection element can be prevented from being polluted by overflowed bonding materials.

As shown in fig. 14, when the thickness of the light modulation film 30 exceeds 0.2mm, the space between the periphery of the light modulation film 30 and the edge of the glass plate is filled with a spacer 73 having the same height as the light modulation film 30. More preferably, in order to ensure that the light modulation film 30 and the adhesive material 20 are not greatly deformed during the processing, a layer of isolation material 73 and another piece of upper cover glass 74 with the same molded surface are sequentially added above the light modulation film 30.

In addition, as shown in fig. 11 and 12, when the driving chip 39 is provided on the flexible electric connection element 37, the driving chip 39 is spaced from the edge of the composite glass by 10 to 20mm or more, so that the driving chip 39 is not covered by the adhesive used when the composite glass is used for connecting the window glass and the vehicle body sheet metal, and the problems of poor heat dissipation, dislocation and the like caused by covering the driving chip 39 by the adhesive 80 for connecting the vehicle body sheet metal are avoided. The electronic components on the control circuit 38 should be arranged on a side surface of the control circuit 38 away from the composite glass, so that the side surface contacted with the composite glass is smooth and free from bulges, and the connection between the electronic components and the vehicle body through the adhesive 71 is firmer.

2) Fixing the relative position of the intermediate assembly, then placing the intermediate assembly into a vacuum bag, and vacuumizing for a certain time; the evacuation time increases with the number of layers of bonding material used, and generally, the evacuation time should be increased by 20 to 40 minutes per layer of bonding material used.

3) Subsequently feeding the vacuum bag into an autoclave and continuously maintaining the vacuum state in the vacuum bag; after a certain time of temperature and pressure (e.g. 2 to 4 hours, maximum temperature 100 ℃ to 120 ℃, pressure 0 to 4 bar), the light modulation film 30 is bonded with the

glass plate

10 or 50, and the vacuum bag is removed; one surface of the light adjusting film 30 is adhered to the glass plate after the vacuum bag is removed, and the other surface of the light adjusting film is in contact with air and is in a free state, so that the light adjusting film is prevented from generating poor block display due to the fact that the two surfaces of the light adjusting film are pressed.

4) The edge seal 60 is preferably disposed in the retracted region of the adhesive material 20 by means of a glue (room temperature vulcanizable rubber, polyurethane glue, silicone glue, etc.) or a tape. The height of the edge seal 60 is the distance between the inner glass pane 10 and the outer glass pane 50; the edge seal 60 reserves more than 2 glue-pouring openings.

Preferably, the edge seal 60 is divided into upper and lower layers where the flexible electrical connection element 37 passes through the edge seal 60, the flexible electrical connection element 37 passing between the two layers. The edge seal 60 is tightly bonded between the upper and lower layers except where the flexible electrical connection element 37 passes, preventing air or moisture from passing.

5) Fastening another glass plate on the adhesive edge sealing member 60 to ensure a gap between the inner glass plate 10 and the outer glass plate 40 (for example, inserting an object with a fixed thickness through an adhesive tape with a preset fixed thickness or an external mold or through a reserved glue filling opening); and after the edge sealing piece is solidified into a box, pouring liquid optically transparent adhesive (LOCA) through the adhesive pouring opening, solidifying, and sealing the adhesive pouring opening after solidifying.

Preferably, the curing of the Liquid Optically Clear Adhesive (LOCA) is achieved by irradiation with a certain temperature or ultraviolet light.

6) Separating the fixed flexible electrical connection element 37 and control circuit 38 from the glass plate and removing the covered insulating material 72; the flexible electrical connection element 37 is bent and the control circuit 38 is fixed on the outer surface of the inner glass plate 10 by an adhesive 71, for example, double-sided tape bonding or RTV (room temperature vulcanized) glue is applied to the periphery of the Printed Circuit Board (PCB) after the PCB is padded by using a small piece of silica gel tape. The corresponding resulting composite glass structure is shown in fig. 9 and 12.

Corresponding to the composite glass structure shown in fig. 11 and 12, the corresponding manufacturing method further includes a step of arranging a protective cover 70 outside the control circuit 38 to protect the driving chip 39 and the control circuit 38; the protective cover 70 is made of a high heat conductive material.

When the outer glass plate 50 is a laminated glass, the light modulation film 30 is first combined with the inner glass plate 10, and then LOCA may also be selected as a bonding material between the light modulation film 30 and the inner glass plate 10. At this time, the outer glass plate 50 is a laminated glass, and LOCA is provided on both sides of the light adjusting film 30; the light-adjusting film 30 does not need to be subjected to higher temperature and pressure in the preparation process of the composite glass, and the possibility is provided for combining a plurality of light-adjusting films which are not resistant to temperature and pressure with the composite glass. The specific preparation process of the scheme comprises the following steps:

edge sealing pieces are arranged on the periphery of the dimming film or on the periphery of the corresponding area of the dimming film on the inner glass plate, the height of each edge sealing piece is equal to the preset LOCA layer thickness, and more than two glue filling openings are reserved on each edge sealing piece. Bonding the dimming film and the glass plate through an edge sealing piece, and pouring liquid optically transparent adhesive (LOCA) through the glue pouring opening and curing after the edge sealing piece is cured into a box;

When the outer glass plate 50 is a laminated glass, the light adjusting film 30 is first combined with the inner glass plate 10, the inner glass plate 10 may be different from the outer glass plate 50 in profile, for example, the inner glass plate 10 may be a planar glass or a single curved glass with curvature change in the driving direction being the same as or close to that of the outer window and no curvature in the vertical driving direction.

The invention further provides a vehicle comprising the above composite glass. Specifically, the inner glass sheet of the composite glass faces into the vehicle. The composite glass is mounted on a vehicle as a window glass by an adhesive 80 for vehicle body sheet metal connection.

It should be understood that the foregoing examples of the present invention are provided merely for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention, and that various other changes and modifications may be made therein by one skilled in the art without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims

1. A composite glass having a dimming function, the composite glass comprising: an inner glass plate, an outer glass plate, and a light adjusting film interposed between the inner glass plate and the outer glass plate; the dimming film has a zonal dimming function and is connected with an external control circuit through a flexible electric connecting element;

2. The composite glass of claim 1, wherein the dimming film has a plurality of gridded partitions, the gridded partitions being independently controllable to have a partitioned dimming function.

3. The composite glass according to claim 2, wherein the light adjusting film comprises a first substrate, a first electrode, a visible light transmittance adjusting material, a second electrode, and a second substrate stacked in this order;

the second electrode and the visible light transmittance adjusting material are correspondingly arranged into micron-sized meshed partitions, gaps in the micron-sized meshed partitions of the second electrode and the periphery of the second electrode are provided with low-sheet-resistance conductive material networks, and each partition of the second electrode is connected with the low-sheet-resistance conductive material network; the low-sheet-resistance conductive material network is gathered at the edge of the dimming film and is connected with an external control circuit through the flexible electric connecting element.

4. The composite glass of claim 1, wherein the distance of the draw-in is 1 to 10mm.

5. The composite glass of claim 1, wherein the light modulation film is bonded to one of the inner and outer glass plates by a bonding material and to the other glass plate by a liquid optically transparent adhesive;

the bonding material is selected from PVB, EVA, TPU, SGP or liquid optically clear adhesive.

6. The composite glass of claim 5, wherein the light modulation film is bonded to the outer glass plate by a bonding material and bonded to the inner glass plate by a liquid optically transparent adhesive; the bonding material is selected from PVB, EVA, TPU or SGP.

7. The composite glass of claim 1, wherein edges of the inner glass sheet are provided with notches at locations corresponding to the flexible electrical connection elements, the flexible electrical connection elements being bent through the notches such that the control circuit is secured to an outside surface of the inner glass sheet.

8. The composite glass according to claim 5 or 6, wherein the bonding material is retracted by 1 to 10mm relative to four sides of the glass sheet in which it is positioned; an edge sealing member is arranged on the periphery between the inner glass plate and the outer glass plate in the shrinking region of the bonding material, and the flexible electric connecting element extends out of the composite glass through the edge sealing member and bends to fix the control circuit on the outer side surface of the inner glass plate or the outer glass plate.

9. The composite glass of claim 8, wherein the edge seal comprises an upper layer and a lower layer where the flexible electrical connection element passes, the flexible electrical connection element passing between the upper and lower layers.

10. The composite glass of claim 1, wherein the flexible electrical connection element is provided with a driver chip that is more than 10-20 mm from the edge of the composite glass.

11. The composite glass according to claim 1, wherein the inner glass plate and the outer glass plate are laminated glass having polarizers inside, and the polarization directions of the two polarizers are 0 ° or 90 °; the light adjusting film has the function of adjusting the polarization state of transmitted light.

12. The composite glass according to claim 1, wherein the inner glass plate or the outer glass plate is a laminated glass having a single-layer polarizer inside, and the light adjusting film has dichroism; the polarization direction of the single-layer polarizer is 90 degrees with the polarization direction of the dimming film.

13. The composite glass according to claim 1, wherein the inner glass plate and/or the outer glass plate is a single-layer glass, a polarizer is combined on the inner side surface of the single-layer glass through a bonding material, or the polarizer is combined with the light adjusting film first, and then the light adjusting film with the polarizer is combined with the inner glass plate and the outer glass plate; when two polaroids are combined, the polarization directions of the two polaroids form 0 degree or 90 degrees, and the dimming film has the function of adjusting the polarization state of transmitted light; when the single-layer polaroids are combined, the polarization direction of the single-layer polaroids and the polarization direction of the dimming film form 90 degrees, and the dimming film has dichroism.

14. The composite glass of claim 1, further comprising a touch film integrated on the inner glass sheet.

15. A method of making a composite glass according to any one of claims 1 to 14, comprising the steps of:

bonding the inner glass plate or the outer glass plate and the dimming film through bonding materials to form an intermediate assembly; the flexible electric connecting element of the dimming film is bent and turned to the outer side surface of the glass plate, and is temporarily fixed on the outer side surface of the glass plate together with the control circuit; the bonding material is selected from PVB, EVA, TPU, SGP or liquid optically clear adhesive;

and bonding the other glass plate with the middle component in a mode of arranging liquid optical transparent adhesive and curing to form the composite glass.

16. The preparation method according to claim 15, characterized in that the preparation method comprises the steps of:

Fixing the relative position of the intermediate assembly, then placing the intermediate assembly into a vacuum bag, and vacuumizing for a certain time;

subsequently feeding the vacuum bag into an autoclave and continuously maintaining the vacuum state in the vacuum bag; after a certain time of temperature and pressure, the light adjusting film is bonded with the glass plate, and the vacuum bag is removed;

fastening another glass plate on the adhesive edge sealing member to ensure a gap between the inner glass plate and the outer glass plate; after the edge sealing piece is solidified into a box, pouring liquid optical transparent glue through the glue pouring opening, solidifying, and sealing the glue pouring opening after solidifying;

separating the secured flexible electrical connection element and control circuitry from the glass sheet and removing the covered insulating material; bending the flexible electrical connection element and securing a control circuit to an outside surface of the inner glass plate.

17. The method of claim 16, wherein the shrunken area of the bonding material is replenished with a spacer material of the same height as the bonding material to the edges of the glass sheet during formation of the intermediate assembly.

18. The method of claim 17, wherein when the thickness of the light modulation film exceeds 0.2mm, the space between the periphery of the light modulation film and the edge of the glass plate is filled with a spacer material having the same height as the light modulation film.

19. The method of claim 18, wherein a layer of insulating material and another piece of cover glass having the same profile are sequentially added over the dimming film.

20. A vehicle comprising the composite glass of any one of claims 1-14.