CN113985637B

CN113985637B - Dimming panel and dimming glass

Info

Publication number: CN113985637B
Application number: CN202111277695.4A
Authority: CN
Inventors: 王昌银; 王春雷; 吴小龙; 翟德深; 梁鹏; 陈娟; 王瑛; 巨小倩; 张思凯; 李展
Original assignee: BOE Technology Group Co Ltd; Beijing BOE Sensor Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Beijing BOE Sensor Technology Co Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2023-10-13
Anticipated expiration: 2041-10-29
Also published as: CN113985637A

Abstract

The application provides a dimming panel and dimming glass, which relate to the technical field of display. The dimming panel includes: a first substrate and a second substrate disposed opposite to each other, and a dimming layer disposed between the first substrate and the second substrate; wherein the first substrate comprises a first substrate and the second substrate comprises a second substrate, the first substrate and the second substrate each comprise a plastic glass substrate, and the plastic glass substrate is configured to be capable of being bent through a hot bending process.

Description

Dimming panel and dimming glass

Technical Field

The application relates to the technical field of display, in particular to a dimming panel and dimming glass.

Background

At present, the demand on the adjustable light vehicle window in the market is larger and larger, and the shape of the adjustable light vehicle window is in a hyperbolic arc shape, so that the light adjusting function layer in the vehicle window can meet the hyperbolic demand, namely, the flexible light adjusting function layer.

At present, a thin film is mostly adopted as a flexible substrate for the flexible dimming functional layer, and a plurality of problems often exist in the preparation process of the flexible substrate. And the pressure distribution in the process of laminating the flexible dimming functional layer and the vehicle window is uneven, and the film substrate has poor supporting property, so that the laminated device is easy to collapse in a region with larger pressure, liquid crystal is less in white spots, the thickness of the box is increased in a region with smaller pressure, and the liquid crystal is increased to form black Mura.

Currently, a new type of dimming glass is needed to solve the above problems.

Disclosure of Invention

The embodiment of the application provides a dimming panel and dimming glass, wherein the dimming panel can be bent through a hot bending process, and has the advantages of better supportability, simple manufacturing process and lower production cost or equipment investment.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical scheme:

in one aspect, there is provided a dimming panel, a dimming glass, the dimming panel comprising: a first substrate and a second substrate disposed opposite to each other, and a dimming layer disposed between the first substrate and the second substrate;

wherein the first substrate comprises a first substrate and the second substrate comprises a second substrate, the first substrate and the second substrate each comprise a plastic glass substrate, and the plastic glass substrate is configured to be capable of being bent through a hot bending process.

Optionally, the material of the plastic glass substrate comprises polymethyl methacrylate or polycarbonate.

Optionally, the thickness of the plastic glass substrate ranges from 0.5 mm to 1mm.

Optionally, the dimming layer comprises a liquid crystal and a dye;

the first substrate further comprises a first conductive layer and a first alignment layer, wherein the first conductive layer and the first alignment layer are arranged between the first substrate and the dimming layer, and the first conductive layer is arranged between the first substrate and the first alignment layer;

the second substrate further comprises a second conductive layer and a second alignment layer, wherein the second conductive layer and the second alignment layer are arranged between the second substrate and the dimming layer, and the second conductive layer is arranged between the second substrate and the second alignment layer.

Optionally, the dimming panel further includes a plurality of support structures, and the support structures penetrate through the dimming layer, and the two sides of the support structures are respectively contacted with the first substrate and the second substrate.

Optionally, the shape of the support structure along a section perpendicular to the dimming layer is circular, trapezoidal or rectangular.

Optionally, the support structure includes a micro-nano structure, one side of the micro-nano structure is in contact with the first substrate, and the other side is in contact with the second substrate.

Optionally, the first substrate further includes a first conductive layer and a first alignment layer, and the first alignment layer is disposed between the first substrate and the dimming layer; the first conductive layer is arranged on one side of the first substrate far away from the dimming layer;

the second substrate further comprises a second conductive layer and a second alignment layer, wherein the second conductive layer and the second alignment layer are arranged between the second substrate and the dimming layer, and the second conductive layer is arranged between the second substrate and the second alignment layer;

the micro-nano structure penetrates through the first alignment layer, and two sides of the micro-nano structure are respectively contacted with the first substrate and the second alignment layer.

On the other hand, a dimming glass is provided, and the dimming glass comprises the dimming panel.

Optionally, the dimming glass further comprises a tempered glass layer configured to encapsulate the dimming panel.

An embodiment of the present application provides a dimming panel including: a first substrate and a second substrate disposed opposite to each other, and a dimming layer disposed between the first substrate and the second substrate; the first substrate comprises a first substrate, the second substrate comprises a second substrate, the first substrate and the second substrate comprise plastic glass substrates, and the plastic glass substrates are configured to be bent through a hot bending process. The dimming functional layer with the plastic glass as the substrate can realize a curved surface shape through a hot bending process, can meet the requirement of the dimming panel on the curved surface, has better supporting property than a flexible film in the related art, can greatly reduce the occurrence rate of white spots and black Mura defects, can save production cost or equipment investment, and has simpler manufacturing process than a device with a film substrate as the substrate.

The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a dimming panel according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of another dimming panel according to an embodiment of the present application;

fig. 3 is a schematic diagram of a dimming panel in a bright state according to an embodiment of the present application;

fig. 4 is a schematic view of a dimming panel in a dark state according to an embodiment of the present application;

fig. 5 is a schematic diagram of a sheet combining structure of a dimming glass according to the related art according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of another dimming panel according to an embodiment of the present application;

FIG. 7 is a schematic diagram of a transition layer fabrication structure according to an embodiment of the present application;

FIGS. 8-10 are schematic diagrams illustrating an imprinting process according to embodiments of the present application;

fig. 11 is a schematic structural diagram of a dimming glass according to an embodiment of the present application;

FIG. 12 is a schematic diagram of a compression mold lamination provided in an embodiment of the present application;

fig. 13 is a schematic diagram of a gravity die lamination according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the embodiments of the present application, the words "first," "second," and the like are used to distinguish between the same item or similar items that have substantially the same function and function, and are merely used to clearly describe the technical solutions of the embodiments of the present application, and are not to be construed as indicating or implying relative importance or implying that the number of technical features indicated is indicated.

In embodiments of the application, "plurality" means two or more.

In the embodiments of the present application, the orientation or positional relationship indicated by the term "upper" or the like is based on the orientation or positional relationship shown in the drawings, only for convenience of description and simplification of description, and is not indicative or implying that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present application.

An embodiment of the present application provides a dimming panel, as shown in fig. 1 and 2, including: a first substrate 1 and a second substrate 2 disposed opposite to each other, and a dimming layer 3 disposed between the first substrate 1 and the second substrate 2; wherein the first substrate 1 comprises a first substrate 11 and the second substrate 2 comprises a second substrate 21, the first substrate 11 and the second substrate 21 each comprising a plastic glass substrate configured to enable bending by a thermal bending process.

The structure, material, etc. of the above-mentioned dimming layer are not particularly limited, and the dimming layer may include only one layer, and the material of the layer may include liquid crystal and a dye agent, wherein the dye agent may be a dichroic dye. Of course, the dimming layer can also comprise a plurality of layers, and the materials of all layers are different or part of the layers are the same, particularly based on practical application.

Now, taking the dimming layer as an example, the dimming layer material is a liquid crystal and a dichroic dye, to illustrate the dimming principle of the dimming layer in the normal white mode, and the dimming layer is applied to the dimming panel to obtain a schematic structural diagram of the dimming panel shown in fig. 3 and fig. 4, wherein fig. 3 illustrates the distribution of the liquid crystal 60 and the dichroic dye 63 in the dimming layer in the bright state, and fig. 4 illustrates the distribution of the liquid crystal 60 and the dichroic dye 63 in the dimming layer in the dark state. The dichroism dye and the liquid crystal are guest-host effect, and can rotate along with the liquid crystal, and the light absorption amount of the dichroism dye gradually decreases along with the rotation angle. Referring to fig. 3, when the dimming panel is not energized, the liquid crystal 60 and the dichroic dye 63 molecules do not rotate, the light absorption amount is minimum, and the dimming panel is in a bright state; referring to fig. 4, when the dimming panel is energized, the rotation angle of the molecules of the liquid crystal 60 and the dichroic dye 63 reaches a maximum value of 90 °, the light absorption amount reaches a maximum value, and the dimming panel is in a dark state.

Here, the thickness, shape, and the like of the first substrate and the second substrate are not particularly limited, and, as illustrated with reference to fig. 1 and 2, the first substrate and the second substrate are each rectangular in shape along a cross section perpendicular to the dimming layer, and of course, the first substrate and the second substrate may be different in shape along a cross section perpendicular to the dimming layer, respectively. For example, the thickness of the first substrate and the second substrate may be 0.6mm, and of course, the thickness of the first substrate and the second substrate may be different, which is specific to practical application.

The hot bending process refers to: and heating and softening the plastic glass substrate, pressing and forming the plastic glass substrate in a mould, and annealing the plastic glass substrate to prepare the curved plastic glass substrate. The temperature of the above-mentioned hot bending process is not particularly limited, and the temperature of the hot bending process may be, for example, in the vicinity of Tg (glass transition temperature, glass Change Temperature) temperature of the polymer material.

The specific structure of the first substrate is not limited herein, and the first substrate may include only the first substrate, or the first substrate may include the first substrate and other film layers disposed on the first substrate, which is specifically based on practical applications.

The specific structure of the second substrate is not limited herein, and the second substrate may include only the second substrate, or the second substrate may include the second substrate and other film layers disposed on the second substrate, which is specifically based on practical applications.

Currently, the demand on the vehicle window (including a skylight, a side window and the like) with dimming is larger and larger in the market, and the shape of the vehicle window is in a hyperbolic arc shape, so that the dimming functional layer in the middle of the vehicle window can meet the hyperbolic demand, namely, the vehicle window is a flexible dimming functional layer. In the related art, a thin film (the thickness is less than 200 μm) is mostly adopted as a substrate in a flexible dimming functional layer, the preparation process generally comprises a laminating process and a roll-to-roll process, wherein the laminating process uses inorganic glass as a carrier plate, the thin film is laminated on the glass through a double-sided adhesive film (the thin film is too soft and needs to be laminated on the inorganic glass through the adhesive film to enter equipment), and the process has the problems of large substrate warpage and high cost after high temperature; the roll-to-roll process is produced in a film roll-to-roll manner with very low throughput. In addition, when the flexible dimming functional layer and the vehicle window are laminated, the process pressure in the lamination process is generally 1-12bar, the pressure distribution is uneven, and the film is a flexible film, so that the support property is poor, and the laminated flexible dimming device is easy to collapse in a region A with larger pressure, has less liquid crystal and is easy to form white spots as shown in fig. 5; in the region B where the pressure is small, the cell thickness increases, and the liquid crystal increases, so that black Mura is easily formed, and fig. 5 shows a spherical particle 42 as an example of a supporting structure.

In the dimming panel provided by the embodiment of the application, the dimming layer is arranged between the first substrate and the second substrate, the first substrate comprises the first substrate, the second substrate comprises the second substrate, the first substrate and the second substrate comprise plastic glass substrates, and the plastic glass substrates are configured to be capable of realizing bending through a hot bending process. The plastic glass is used for replacing inorganic glass in the related art as a substrate of the dimming panel, the dimming functional layer with the plastic glass as the substrate can realize a curved surface shape through a hot bending process, the requirement of the dimming panel on the curved surface can be met, the flexible film has better supporting property than that of the flexible film in the related art, the occurrence rate of white spots and black Mura defects can be greatly reduced, the plastic glass single sheet can enter LCD production line equipment, the production cost or equipment investment can be saved, the manufacturing process is more suitable for LCD production lines, and the manufacturing process is simpler than that of a device with a film substrate as the substrate.

For ease of fabrication, the material of the plastic glass substrate may therefore alternatively comprise polymethyl methacrylate or polycarbonate.

If the thickness is thin, the plastic glass substrate may have poor support property; if the thickness is thicker, bending is more difficult and material is wasted in the hot bending process, so that the thickness of the plastic glass substrate is optionally in the range of 0.5-1mm.

Alternatively, referring to fig. 1 and 2, the dimming layer includes a liquid crystal 60 and a dye agent 61.

The dye is not particularly limited, and examples thereof include dichromatic dyes, particularly based on practical applications.

As shown with reference to fig. 1 and 2, the first substrate 1 further includes a first conductive layer 12 and a first alignment layer 13 disposed between the first substrate 11 and the dimming layer 3, the first conductive layer 12 being disposed between the first substrate 11 and the first alignment layer 13. Thus, the liquid crystal and the dye agent can be aligned through the first alignment layer, and the first alignment layer is easy to manufacture on the plastic glass substrate through the first conductive layer.

Here, the material, thickness, and the like of the first conductive layer are not particularly limited, and the material of the first conductive layer may be ITO (Indium Tin Oxides, indium tin oxide) as an example.

The material, thickness, etc. of the first alignment layer are not particularly limited, and are specifically determined according to actual needs.

As shown with reference to fig. 1 and 2, the second substrate 2 further includes a second conductive layer 22 and a second alignment layer 23 disposed between the second substrate 21 and the dimming layer 3, the second conductive layer 22 being disposed between the second substrate 21 and the second alignment layer 23. Thus, the liquid crystal and the dye agent can be aligned through the second alignment layer, and the second alignment layer is easy to manufacture on the plastic glass substrate through the second conductive layer.

Here, the material, thickness, etc. of the second conductive layer are not particularly limited, and the material of the second conductive layer may be ITO, as an example.

The material, thickness, etc. of the second alignment layer are not particularly limited, and are specifically determined according to actual needs.

Optionally, referring to fig. 1, 2 and 6, the dimming panel further includes a plurality of support structures penetrating the dimming layer 3 and contacting the first substrate 1 and the second substrate 2 at both sides thereof, respectively. Thus, the first substrate and the second substrate can be better supported by the supporting structure, and the first substrate and the second substrate are prevented from being contacted.

The material, shape, etc. of the support structure are not particularly limited, and the shape of the support structure may include a sphere, a cuboid, etc. as an example.

In order to facilitate the fabrication of the support structure, the support structure may alternatively be circular, trapezoidal or rectangular in shape along a cross section perpendicular to the dimming layer.

Alternatively, referring to fig. 6, the support structure includes a micro-nano structure 41, and one side of the micro-nano structure 41 is in contact with the first substrate 11 and the other side is in contact with the second substrate 2. Thus, the first substrate and the second substrate can be better supported by the micro-nano structure, and the first substrate and the second substrate are prevented from being contacted. More importantly, the micro-nano structure can be directly prepared on the flat plate hot pressing equipment, no additional equipment is needed, and the cost is low.

The micro-nano structure refers to a structure having a micro-size or a nano-size. The specific dimensions of the micro-nano structure are not limited herein, and exemplary dimensions of the micro-nano structure may include 0-25 μm.

Optionally, referring to fig. 6, the first substrate 1 further includes a first conductive layer 12 and a first alignment layer 13, the first alignment layer 13 being disposed between the first substrate 11 and the dimming layer 3; the first conductive layer 12 is arranged on the side of the first substrate 11 remote from the dimmer layer 3. Thus, the first conductive layer is arranged on the back surface of the micro-nano structure, and the first conductive layer is prevented from being damaged due to hot pressing.

Referring to fig. 6, the second substrate 2 further includes a second conductive layer 22 and a second alignment layer 23 disposed between the second substrate 21 and the dimming layer 3, the second conductive layer 22 being disposed between the second substrate 21 and the second alignment layer 23. The micro-nano structure 41 penetrates through the first alignment layer 13, and two sides of the micro-nano structure are respectively contacted with the first substrate 11 and the second alignment layer 23.

Alternatively, referring to fig. 1, the support structure includes spherical particles 42, and the spherical particles 42 are dispersed in the dimming layer 3.

Referring to fig. 1, the first substrate 1 further includes a first conductive layer 12 and a first alignment layer 13 disposed between the first substrate 11 and the dimming layer 3, the first conductive layer 12 being disposed between the first substrate 11 and the first alignment layer 13. The second substrate 2 further includes a second conductive layer 22 and a second alignment layer 23 disposed between the second substrate 21 and the dimming layer 3, the second conductive layer 22 being disposed between the second substrate 21 and the second alignment layer 23.

Referring to fig. 1, spherical particles 42 are in contact with the first alignment layer 13 and the second alignment layer 23, respectively. Therefore, the spherical particles can play a good supporting role on the first substrate and the second substrate, and the first substrate and the second substrate are prevented from being contacted.

Alternatively, referring to fig. 2, the support structure includes spacers 43, and the spacers 43 are disposed on the first substrate 11.

As shown in fig. 2, the first substrate 1 further includes a first conductive layer 12 and a first alignment layer 13 disposed between the first substrate 11 and the dimming layer 3, the first conductive layer 12 being disposed between the first substrate 11 and the first alignment layer 13. The second substrate 2 further includes a second conductive layer 22 and a second alignment layer 23 disposed between the second substrate 21 and the dimming layer 3, the second conductive layer 22 being disposed between the second substrate 21 and the second alignment layer 23.

Referring to fig. 2, the spacers 43 penetrate the first alignment layer 13 and are in contact with the first conductive layer 12 and the second alignment layer 23, respectively. Therefore, the first substrate and the second substrate can be well supported by the spacer, and the first substrate and the second substrate are prevented from being contacted.

Here, the shape of the spacer along the cross section perpendicular to the light modulation layer is not particularly limited, and fig. 2 is a positive trapezoid, which is an example of the shape of the spacer along the cross section perpendicular to the light modulation layer, and is specifically based on practical application.

Referring to fig. 1, 2 and 6, a second spacer 90 is further disposed between the first alignment film 13 and the second alignment film 23 to further support the first substrate and the second substrate.

Specific processes for manufacturing the dimming layer and the plastic glass substrate in the dimming panel will be described below by taking the structures shown in fig. 1, 2 and 6 as examples.

The specific manufacturing process of the dimming layer is described below:

s1, providing a first substrate, and instilling liquid crystal and a dye agent on the first substrate.

The specific structure of the first substrate is not limited herein, and the first substrate may include a first conductive layer, a first alignment layer, and a support structure, for example.

S2, providing a second substrate.

Here, the specific structure of the second substrate is not limited, and the second substrate may include a second conductive layer and a second alignment layer, for example.

S3, arranging the first substrate and the second substrate oppositely to form a dimming layer.

The specific manufacturing process of the plastic glass substrate and the first conductive layer thereon will be described further below:

s4, referring to fig. 7, a surface-treated plastic glass substrate is used as the first substrate 11.

The step S4 of surface-treating the plastic glass substrate includes: referring to fig. 7, a transition layer 92 is formed on the first substrate 11 at S4'.

The material, the manufacturing process, etc. of the above-mentioned transition layer are not particularly limited, and the material of the transition layer may be silicon dioxide as an example. For example, the transition layer may be fabricated by CVD (Chemical Vapor Deposition ).

Here, the material, thickness, etc. of the first conductive layer are not particularly limited, and the material of the first conductive layer may be ITO, for example.

When the plastic glass is made of organic polymer and the first conductive layer is made of indium-tin metal oxide, the interface bonding force between the organic material and the metal oxide is poor, and a transition layer needs to be manufactured on the surface of the organic material for improvement.

S5, referring to fig. 7, the first conductive layer 12 is formed on the transition layer 92.

Here, the manufacturing process, the manufacturing temperature, and the like of the first conductive layer are not particularly limited, and an ITO film may be manufactured by magnetron sputtering at normal temperature and then annealed at a temperature lower than Tg to form the first conductive layer.

S6, removing the transition layer to obtain the plastic glass substrate and the first conductive layer.

The specific manufacturing process will be described below by taking the structure shown in fig. 1 as an example.

S11, referring to fig. 1, a first conductive layer 12 is formed on a plastic glass substrate, a first alignment film 13 is coated on the first conductive layer 12, and rubbing alignment is performed to form a first substrate 1.

The process of fabricating the plastic glass substrate and the first conductive layer thereon may refer to steps S4-S6.

S12, referring to fig. 1, BS (Ball Spacer) 42 is formed on the first substrate 1.

The manufacturing process of the BS is not particularly limited, and the BS is formed by a spraying process, for example.

S13, referring to fig. 1, a liquid crystal and a dye agent are dropped on the first alignment film 13 to form the light modulation layer 3.

S14, referring to fig. 1, a second alignment film 23 is coated on the plastic glass substrate and the second conductive layer 22, and is rubbed and oriented to form a second substrate 2.

S15, referring to fig. 1, a frame sealing adhesive 30 is coated on the second alignment film 23.

S16, referring to fig. 1, the first substrate 1, the dimming layer 3, the second substrate 2, and the frame sealing glue 30 are disposed opposite to each other.

S17, referring to FIG. 1, the frame sealing glue is cured at high temperature by UV (Ultra Violet) irradiation to form the light-adjusting panel.

The temperatures of the UV irradiation and the high-temperature curing frame sealing glue are not particularly limited, and the temperatures of the UV irradiation and the high-temperature curing frame sealing glue are lower than Tg of the plastic glass material.

The specific manufacturing process will be described below by taking the structure shown in fig. 2 as an example.

S21, referring to fig. 2, a first conductive layer 12 is formed on a plastic glass substrate, and PS (Photo Spacer) 43 is formed on the first conductive layer 12.

S22, referring to fig. 2, the first alignment film 13 is coated between PS43 and rubbed and aligned to form the first substrate 1.

S23, referring to fig. 2, a liquid crystal and a dye agent are dropped on the first alignment film 13 to form the light modulation layer 3.

S24, referring to fig. 2, a second alignment film 23 is coated on the plastic glass substrate and the second conductive layer 22, and is rubbed and oriented to form a second substrate 2.

S25, referring to fig. 2, a frame sealing adhesive 30 is coated on the second alignment film 23.

S26, referring to fig. 2, the first substrate 1, the dimming layer 3, the second substrate 2, and the frame sealing glue 30 are disposed opposite to each other.

S27, referring to FIG. 2, the frame sealing glue is cured at a high temperature through UV irradiation to form the light-adjusting panel.

The specific manufacturing process will be described below by taking the structure shown in fig. 6 as an example.

S31, referring to fig. 6, a plastic glass substrate is formed on the first conductive layer 12.

At this time, the first conductive layer is arranged on the back surface of the plastic glass substrate, so that the first conductive layer is prevented from being damaged due to hot pressing.

S32, referring to fig. 6, a micro-nano structure 41 is formed on a plastic glass substrate.

The process for preparing the micro-nano structure is not particularly limited, and the micro-nano structure can be prepared by using a hot embossing technology.

Specifically, referring to fig. 8, 9 and 10, the mold 31 (including two parts, namely, the first mold 311 and the second mold 312), the first conductive layer 12 and the first substrate 11 formed of plastic glass provided with the polymer 93 are heated to an imprinting temperature (the imprinting temperature is about the polymer Tg), then a pressure is applied to the mold 31 to perform an imprinting process, and the process is maintained at a certain temperature and pressure for a period of time to ensure that the polymer is fully filled into the microcavities of the mold, and finally, the mold is released after cooling, so that the micro-nano structure of the mold is transferred onto the plastic glass, wherein the shape, the size and the like of the micro-nano structure can be designed according to practical requirements.

S33, referring to fig. 6, the first alignment film 13 is coated between the micro-nano structures 41 and rubbed and oriented to form the first substrate 1.

S34, referring to fig. 6, a liquid crystal 60 and a dye 61 are dropped on the first alignment film 13 to form the light modulation layer 3.

S35, referring to fig. 6, a second alignment film 23 is coated on the plastic glass substrate and the second conductive layer 22, and rubbed and oriented to form a second substrate 2.

S36, referring to fig. 6, a frame sealing adhesive 90 is coated on the second alignment film 23.

S37, referring to fig. 6, the first substrate 1, the dimming layer 3, the second substrate 2, and the frame sealing glue 90 are disposed opposite to each other.

S38, referring to FIG. 6, the frame sealing glue 90 is cured at a high temperature by UV irradiation to form the light-adjusting panel.

In the embodiments of the present application, reference may be made to the above embodiments for each structural description of the dimming panel, which is not repeated here.

The embodiment of the application also provides dimming glass comprising the dimming panel.

The light control glass may be flexible light control glass, and is not limited herein. The dimming glass is widely applied to the fields of vehicle windows and the like, and products which are popularized or have good popularization prospects comprise a car as a house and the like with a dimming passenger car skylight and a side window. The dimming glass has the advantages that the curved surface shape can be realized through a hot bending process, the requirement of a dimming panel on the curved surface can be met, the dimming glass has better supporting property than a flexible film in the related art, the occurrence rate of white spots and black Mura defects can be greatly reduced, a plastic glass single sheet can enter LCD production line equipment, the production cost or equipment investment can be saved, the dimming glass is more suitable for LCD production lines, and the manufacturing process is simpler than a device with a film substrate as a substrate.

Here, the structure of the above-mentioned light-adjusting glass is not particularly limited, and the light-adjusting glass may include only a light-adjusting panel, or the light-adjusting glass may also include a light-adjusting panel, tempered glass, or the like, depending on the actual application.

For some vehicle types, such as a motor home, only the dimming panel is used as a vehicle window, and toughened glass is not needed, namely the lamination process can be omitted, the influence of lamination pressure is avoided, and the risks of white spots and Mura are almost zero. The dimming panel can also be directly used as a passenger car window, so that the dimming panel taking plastic glass as a substrate can be directly used as the car window after being molded by a hot bending process, a lamination process is omitted, the occurrence of lamination failure is avoided, the process is simplified, and the cost is saved.

The following provides a specific manufacturing method of a dimming panel directly used as a dimming glass.

S41, providing a dimming panel.

Here, the specific structure of the above-mentioned dimming panel is not limited, and the dimming panel may be any one of fig. 1, 2, or 6 by way of example.

S42, forming the dimming panel through a hot bending process.

Optionally, referring to fig. 11, the dimming glass further includes a tempered glass layer 40, and the tempered glass layer 40 is configured to encapsulate the dimming panel 100. The dimming panel taking plastic glass as a substrate forms a curved surface shape through a hot bending process when the vehicle window is combined, the curvature of the dimming panel is almost identical to that of toughened glass, the anastomosis degree of the dimming panel and the toughened glass is higher, and the defect that a film-based device in the related art is folded on a large curvature spherical surface due to poor anastomosis degree can be avoided, so that the combined sheet yield is effectively improved.

Here, the manner of packaging the light-adjusting panel with the toughened glass layer is not particularly limited, and for example, films may be disposed on the side, away from the second substrate, of the first substrate of the light-adjusting panel and on the side, away from the second substrate, of the first substrate, and then the light-adjusting panel is combined between two pieces of toughened glass through the films to obtain curved light-adjusting glass, where the curvature of the light-adjusting panel is the same as that of the toughened glass. The material of the film is not particularly limited, and the film may be an EVA (Polyethylene Vinylacetate, polyethylene-polyvinyl acetate copolymer) film or a PVB (polyvinyl butyral ) film, as illustrated in fig. 11 and 12 by using the film as an EVA95 film.

The mold for the tempered glass layer packaging dimming panel is not particularly limited, and may be a curved mold as an example. Specifically, the mold may be a pressure type mold as shown in fig. 12 or a gravity type mold as shown in fig. 13.

The following describes a specific process for bonding the dimming glass.

S51, placing the dimming panel into a high-temperature furnace for heating, so that the dimming panel is softened.

The above temperature is not particularly limited, and is exemplified by a temperature around Tg of plastic glass.

S52, placing the softened dimming panel on a curved surface die, so that the dimming panel forms a curved surface with the same curvature as that of the toughened glass.

The curved surface die can also be used for thermally bending toughened glass.

The curved mold may be a pressure type mold as shown in fig. 12 or a gravity type mold as shown in fig. 13.

Referring to fig. 12, the pressure type mold is generally convex, vacuum holes 50 are distributed on the pressure type mold, and the dimming panel can be made into a curved surface by vacuum adsorption of the vacuum holes 50 and external pressure. Referring to fig. 13, the gravity type is generally concave, and the softened dimming panel is placed on a gravity type mold, and gradually and perfectly fits with the mold through the gravity dimming functional layer to form a curved surface shape.

S53, combining.

The method is characterized in that the curved surface die is used for realizing the light-adjusting glass lamination, namely, the light-adjusting panel is subjected to a hot bending process to realize the curved surface shape with the same curvature as that of the toughened glass.

The step S53, the lamination may include: s531, placing films on two sides of the dimming panel, and then placing toughened glass with the same curvature as the dimming panel on the films to form a toughened glass/film/dimming panel/film/toughened glass structure.

In the step S531, the films are placed on two sides of the dimming panel, and then tempered glass with the same curvature as the dimming panel is placed on the films, so that after the tempered glass/film/dimming panel/film/tempered glass structure is formed, the film combining method further comprises: s532, placing the toughened glass/film/dimming panel/film/toughened glass structure into a vacuum bag, softening the film, and bonding the toughened glass and the dimming panel together to form the dimming glass.

The vacuum degree of the vacuum bag is not particularly limited, and may be 1bar, for example.

The high temperature is not particularly limited, and may be, for example, 100 ℃.

Reference herein to "one embodiment," "an embodiment," or "one or more embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Furthermore, it is noted that the word examples "in one embodiment" herein do not necessarily all refer to the same embodiment.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A dimming panel, comprising: a first substrate and a second substrate disposed opposite to each other, and a dimming layer disposed between the first substrate and the second substrate;

wherein the first substrate comprises a first substrate and the second substrate comprises a second substrate, the first substrate and the second substrate each comprise a plastic glass substrate, and the plastic glass substrate is configured to be capable of being bent through a hot bending process;

the dimming panel further comprises a plurality of supporting structures, wherein the supporting structures penetrate through the dimming layer, and two sides of the supporting structures are respectively contacted with the first substrate and the second substrate;

the support structure comprises a micro-nano structure, wherein one side of the micro-nano structure is contacted with the first substrate, and the other side of the micro-nano structure is contacted with the second substrate;

the first substrate further comprises a first conductive layer and a first alignment layer, and the first alignment layer is arranged between the first substrate and the dimming layer; the first conductive layer is arranged on one side of the first substrate far away from the dimming layer;

2. The dimming panel as recited in claim 1, wherein the material of the plastic glass substrate comprises polymethyl methacrylate or polycarbonate.

3. A dimming panel as claimed in claim 1, wherein the plastic glass substrate has a thickness ranging from 0.5 to 1mm.

4. The dimming panel of claim 1, wherein the dimming layer comprises a liquid crystal and a dye;

5. A dimming panel as claimed in claim 1, wherein the support structure is circular, trapezoidal or rectangular in shape along a section perpendicular to the dimming layer.

6. A dimming glass comprising the dimming panel of any one of claims 1 to 5.

7. The dimming glass of claim 6, further comprising a tempered glass layer configured to encapsulate the dimming panel.