Liquid crystal film for automotive glass

Abstract

Provided is a liquid crystal film for automotive glass. The liquid crystal film comprises a first substrate layer, a first conducting layer arranged on the first substrate layer, a second substrate layer arranged opposite to the first substrate layer, a second conducting layer arranged on the side, close to the first conducting layer, of the second substrate layer, and a liquid crystal layer arranged between the first conducting layer and the second conducting layer. The liquid crystal layer comprises a plurality of spacers and a liquid crystal mixture; the plurality of spacers are vertically arranged between the first conductive layer and the second conductive layer and divide the space between the first conductive layer and the second conductive layer into a plurality of crystal lattices; the plurality of crystal lattices are filled with the liquid crystal mixture. The shape of each of the plurality of crystal lattices is a polygon.

Description

Technical Field

[0001] The present disclosure relates to the technical field of liquid crystal films, and in particular to a liquid crystal film for automobile glass. Background Art

[0002] With the development of modern science and technology, the application of glass is becoming more and more extensive, especially in automotive glass. Glass has a wide range of application scenarios in automobiles, such as front windshields, rear windshields, door glass, window glass, and sunroof glass. These glasses together form a relatively closed whole in the car, which plays a role in shielding from wind and rain, maintaining the temperature in the car, and allowing passengers in the car to observe the surrounding environment. With the advancement and breakthroughs in automotive glass material technology, more and more new functional automotive glasses are emerging, such as dimmable automotive glass.

[0003] At present, dimmable automotive glass is usually prepared by placing two ordinary glasses opposite to each other and sandwiching a liquid crystal layer between the two ordinary glasses. Since automotive glass usually has a certain curvature, the liquid crystal layer will bend to a certain extent during the high temperature and high pressure lamination process. The liquid crystal layer is prone to bubbles and delamination during the bending process, resulting in unqualified automotive glass. The dimming effect of automotive glass cannot be achieved.

[0004] Dimmable automotive glass can also be prepared by sandwiching a liquid crystal dimmable film between two pieces of ordinary glass. The liquid crystal dimmable film is usually provided with a first substrate, a first conductive layer, a liquid crystal material layer, a second conductive layer, a third conductive layer and a second substrate. The liquid crystal material layer is cured between the two conductive layers by ultraviolet curing of the liquid crystal mixture and the glue. However, the liquid crystal dimmable film is prone to various problems during the high temperature and high pressure lamination process, such as unstable internal structure. During the high temperature and high pressure lamination process, the dimmable film will deform to a certain extent, and the thickness of the dimmable film will also vary unevenly, resulting in an unstable internal structure. Summary of the invention

[0005] One object of the present disclosure is to provide a liquid crystal film for automobile glass, comprising: a first substrate layer; a first conductive layer disposed on the first substrate layer; a second substrate layer opposite to the first substrate layer; a second conductive layer disposed on a side of the second substrate layer close to the first conductive layer; and a liquid crystal layer disposed between the first conductive layer and the second conductive layer. The liquid crystal layer comprises a plurality of spacers and a liquid crystal mixture; the plurality of spacers are disposed upright between the first conductive layer and the second conductive layer, and divide the space between the first conductive layer and the second conductive layer into a plurality of lattices; the liquid crystal mixture is filled in the plurality of lattices. The shape of each of the plurality of lattices is a polygon.

[0006] In some embodiments, the liquid crystal layer further includes a bottom plate, which is disposed on the second conductive layer, and a plurality of spacers are vertically disposed between the bottom plate and the second conductive layer to divide the space between the bottom plate and the second conductive layer into a plurality of lattices.

[0007] In some embodiments, the base plate and the plurality of lattices are integrally formed by curing adhesive.

[0008] In some embodiments, each of the plurality of lattices is in the shape of a regular hexagon.

[0009] In some embodiments, each of the plurality of lattices is in the shape of a regular tetragon.

[0010] In some embodiments, the thickness of the base plate is in a range of 0.01 microns to 10 microns.

[0011] In some embodiments, each spacer in the plurality of spacers has a thickness in a range from 5 microns to 10 microns.

[0012] In some embodiments, each of the plurality of lattices has a shape having a maximum diameter in a range from 30 micrometers to 10 millimeters.

[0013] In some embodiments, the liquid crystal mixture is formed by mixing liquid crystals, a chiral agent, and a glue.

[0014] In some embodiments, the liquid crystal mixture is formed by mixing liquid crystals, a chiral agent, and microparticles.

[0015] In some embodiments, the liquid crystal is selected from any one of GH liquid crystal, TN liquid crystal, VA liquid crystal, ECB liquid crystal, PDLC liquid crystal, PNLC liquid crystal or PSCT liquid crystal.

[0016] In some embodiments, the first substrate layer and the second substrate layer are PET films or PC boards.

[0017] In some embodiments, the first conductive layer and the second conductive layer are transparent conductive layers.

[0018] Another object of the present disclosure is to provide a method for preparing a liquid crystal film for automobile glass, comprising: providing a first substrate layer and a second substrate layer; arranging a first conductive layer on the first substrate layer, and arranging a second conductive layer on the second substrate layer; spraying a curing glue on the second conductive layer and imprinting a plurality of spacers on the second conductive layer through a mold, wherein the plurality of spacers define a plurality of lattices; preparing a liquid crystal mixture and filling the liquid crystal mixture into the plurality of lattices; covering the plurality of spacers and the plurality of lattices with the first substrate layer and the first conductive layer, wherein the first conductive layer is arranged on top of the plurality of spacers; and sealing the edge of the first substrate layer, the edge of the first conductive layer, the edge of the liquid crystal layer, the edge of the second conductive layer, and the edge of the second substrate layer.

[0019] In some embodiments, spraying the curing glue on the second conductive layer and printing a plurality of spacers on the second conductive layer through a mold further includes printing a base plate on the second conductive layer through the same mold.

[0020] In some embodiments, the liquid crystal mixture is formed by mixing liquid crystals, a chiral agent, and a glue.

[0021] In some embodiments, the liquid crystal mixture is formed by mixing liquid crystals, a chiral agent, and microparticles.

[0022] In some embodiments, the liquid crystal is selected from any one of GH liquid crystal, TN liquid crystal, VA liquid crystal, ECB liquid crystal, PDLC liquid crystal, PNLC liquid crystal or PSCT liquid crystal.

[0023] In some embodiments, each of the plurality of lattices is in the shape of a regular hexagon.

[0024] In some embodiments, each of the plurality of lattices is in the shape of a regular tetragon. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly explain the technical solutions in the embodiments of the present disclosure, the following will briefly describe various embodiments with reference to the accompanying drawings. The drawings described below are only part of the embodiments of the present disclosure, and those skilled in the art can produce other drawings without creative work.

[0026] Figure 1 is a schematic structural diagram of a liquid crystal film for automobile glass according to an embodiment of the present disclosure.

[0027] Figure 2 4 is a schematic structural diagram of a liquid crystal layer and a first conductive layer of a liquid crystal film for automobile glass according to an embodiment of the present disclosure.

[0028] Figure 3 is a schematic structural diagram of a liquid crystal film for automobile glass according to another embodiment of the present disclosure.

[0029] Figure 4 4 is a schematic structural diagram of a liquid crystal layer and a first conductive layer of a liquid crystal film for automobile glass according to an embodiment of the present disclosure.

[0030] Figure 5 4 is a schematic structural diagram of a liquid crystal layer and a first conductive layer of a liquid crystal film for automobile glass according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. The described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present disclosure.

[0032] It should be noted that if there are directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present disclosure, the directional indications are only used to explain the relative position relationship, movement, etc. between the components under a specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, if there are descriptions such as "first", "second", etc. in the embodiments of the present disclosure, the descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection of the present disclosure.

[0034] The terms "and" and "or" as used herein may include various meanings that depend at least in part on the context in which the terms are used. Generally, if used to associate a list, such as A, B, or C, "or" means inclusive A, B, and C, as well as exclusive A, B, or C. In addition, the terms "one or more" used herein may be used to describe any feature, structure, or characteristic in the singular, and may also be used to describe a certain combination of features, structures, or characteristics. However, it should be noted that this is merely an illustrative example, and the subject matter claimed is not limited to this example. In addition, if used to associate a list, such as A, B, or C, the term "at least one" may be interpreted as any combination of A, B, and / or C, such as A, AB, AA, AAB, AABBCCC, etc.

[0035] In the specification of the present disclosure, unless otherwise clearly specified and limited, the terms "connection", "connected", "installed", "fixed", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. It is understandable that for ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances. Example 1

[0036] Reference Figure 1 and Figure 2 The present disclosure provides a liquid crystal film for automobile glass, wherein the liquid crystal film for automobile glass includes a first substrate 100, a first conductive layer 200, a liquid crystal layer 300, a second conductive layer 400, and a second substrate 500. The first conductive layer 200 is attached to the first substrate 100, and the second conductive layer 400 is attached to the second substrate 500. The first conductive layer 200 and the second conductive layer 400 are arranged opposite to each other, and the liquid crystal layer 300 is located between the first conductive layer 200 and the second conductive layer 400.

[0037] The liquid crystal layer 300 includes a bottom plate 301, a plurality of spacers 302, and a liquid crystal mixture 303. The bottom plate 301 is disposed on the second conductive layer 400, the plurality of spacers 302 are disposed perpendicular to the bottom plate 301, and the first conductive layer 200 is disposed on the plurality of spacers 302. The plurality of spacers 302 divide the space between the bottom plate 301 and the first conductive layer 200 into a plurality of lattices 304, and the liquid crystal mixture 303 is filled in the plurality of lattices 304. In an embodiment, each of the plurality of lattices 304 is in the shape of a polygon.

[0038] In an embodiment, the tops of the plurality of spacers 302 are bonded to the first conductive layer 200. Further, the tops of the plurality of spacers 302 are firmly adhered to the first conductive layer 200, and the bottoms of the plurality of spacers 302 are firmly adhered to the bottom plate 301. The bottom of the bottom plate 301 is bonded to the second conductive layer 400. In this way, the liquid crystal layer 300, the first conductive layer 200, and the second conductive layer 400 are bonded into a stable whole, thereby ensuring that the thickness of the liquid crystal layer 300 remains consistent during the lamination process and preventing the thickness of the liquid crystal film from being locally increased or decreased due to bending.

[0039] The liquid crystal layer 300, the first conductive layer 200 and the second conductive layer 400 together form a stable and strong structure. This structure is very suitable for the high temperature and high pressure lamination process in the production of automotive glass. The lattice defined by the spacers supports the liquid crystal mixture and prevents the liquid crystal molecules from sinking or sagging, thereby improving the dimming effect. In addition, due to the spacers in the liquid crystal layer, the liquid crystal film can be bent while maintaining the same thickness, which makes it more suitable for roll-to-roll production.

[0040] Reference Figure 2 In an embodiment, each of the plurality of lattices 304 is in the shape of a regular hexagon, so as to have higher strength and better high temperature and high pressure resistance.

[0041] In an embodiment, the thickness H1 of the bottom plate 301 is in the range of 0.01 micrometers to 10 micrometers. In the present embodiment, the thickness H1 of the bottom plate 301 is optionally 10 micrometers. The thickness H2 of each of the plurality of spacers 302 is in the range of 5 micrometers to 10 micrometers. In the present embodiment, the thickness H2 of each of the plurality of spacers 302 is optionally 10 micrometers. The width H3 of each of the plurality of spacers 302 is 10 micrometers.

[0042] Further references Figure 2 In an embodiment where the shape of each of the plurality of lattices 304 is a regular hexagon, the maximum diameter H4 of each of the plurality of lattices 304 is in the range of 30 μm to 10 mm, and optionally, the maximum diameter H4 is 5 mm.

[0043] In an embodiment, the bottom plate 301 and the plurality of spacers 302 are integrally formed by curing glue (e.g., UV curing glue). The UV curing glue is sprayed on the second conductive layer 400, and then a mold having the shape of the bottom plate 301 and the spacers 302 is used to print on the sprayed UV curing glue. Then, the glue is cured by ultraviolet irradiation, thereby forming the bottom plate 301 and the spacers 302. The bottom plate 301 can separate the liquid crystal mixture 303 in the lattice 304 from the second conductive layer 400, thereby providing a good insulation effect.

[0044] In the embodiment, the liquid crystal mixture 303 is obtained by mixing liquid crystal, chiral agent and particles. The chiral agent is commonly found in the market, such as chiral agent S811. The particles are transparent and have little effect on the refraction of light, such as silicon spheres.

[0045] In addition, the liquid crystal used in the liquid crystal mixture 303 can be selected from guest-host (GH) liquid crystal, twisted nematic (TN) liquid crystal, vertical alignment (VA) liquid crystal, electrically controlled birefringence (ECB) liquid crystal, polymer dispersed liquid crystal (PDLC) liquid crystal, polymer network liquid crystal (PNLC) liquid crystal or polymer stabilized cholesteric texture (PSCT) liquid crystal.

[0046] In an embodiment, GH liquid crystal is used in the liquid crystal mixture 303 to achieve stepless dimming and provide a better experience. A guest-host relationship is defined in the liquid crystal layer by mixing GH liquid crystal and dichroic dye, where GH liquid crystal is the host and dichroic dye is the guest. Under the action of an external electric field, the dye molecules rotate with the liquid crystal molecules, and the dichroic dye has anisotropy of light absorption. According to the orientation relationship between the absorption axis of the dye molecule and the molecular axis of the dye molecule, the dichroic dye is divided into positive (P-type) dichroic dye and negative (N-type) dichroic dye. When the polarization direction of light is perpendicular to the absorption axis of the dye molecule, the light is basically transmitted. However, when the polarization direction of light is parallel to the absorption axis of the dye molecule, the light is basically absorbed. This type of dichroic dye is a positive dichroic dye, while the negative dichroic dye is just the opposite. Light is absorbed or transmitted according to the characteristics of the positive dichroic dye and the negative dichroic dye, thereby changing the transmittance of the liquid crystal layer 300. GH liquid crystal can selectively transmit light with dichroic dye without a polarizer. The liquid crystal layer 300 can realize the dimming of the liquid crystal film and maintain the high transparency of the liquid crystal film. The color of the liquid crystal film can also be adjusted by the color of the dichroic dye. In another embodiment, if privacy glass is required, PDLC liquid crystal, PNLC liquid crystal or PSCT liquid crystal can be selected, and PNLC liquid crystal is optional.

[0047] In the embodiment, the first substrate layer 100 and the second substrate layer 500 are PET films. According to the actual needs, other materials suitable as substrate materials can be selected as the substrate layer, such as a transparent PC board or transparent glass.

[0048] In addition, the first conductive layer 200 and the second conductive layer 400 are transparent conductive layers. Optionally, the first conductive layer 200 and the second conductive layer 400 are both indium tin oxide (ITO) conductive layers. The first conductive layer 200 is an emitting electrode, and the second conductive layer 400 is a receiving electrode, so as to generate a stable electric field between the first conductive layer 200 and the second conductive layer 400. The charge can flow from the emitting electrode 200 to the receiving electrode 400 through the liquid crystal layer 300 including the liquid crystal mixture 303. In this way, the liquid crystal layer 300 can be stably driven to change the state. The liquid crystal film for automotive glass also includes a controller (not shown in the figure), which is provided with a control circuit. The first conductive layer 200 and the second conductive layer 400 are electrically connected to the control circuit, and the electric field between the first conductive layer 200 and the second conductive layer 400 is controlled by the controller.

[0049] A method for preparing a liquid crystal film for automobile glass is provided. The steps according to an embodiment of the preparation method are as follows.

[0050] Step 1: Select two transparent PET films as the first substrate layer 100 and the second substrate layer 500 . Plate an ITO conductive layer on one side of the first substrate layer 100 to obtain the first conductive layer 200 , and plate an ITO conductive layer on one side of the second substrate layer 200 to obtain the second conductive layer 400 .

[0051] Step 2: Spray curing glue on the second conductive layer 400, and use a mold with the shape of the base plate and the spacer to print on the sprayed curing glue. The glue is cured by ultraviolet irradiation to form the base plate 301 and a plurality of spacers 302 on the second conductive layer 400.

[0052] Step 3: Liquid crystal, chiral agent and microparticles are mixed to obtain a liquid crystal mixture 303. The liquid crystal is selected as GH liquid crystal.

[0053] Step 4: Filling the liquid crystal mixture 303 into the plurality of crystal lattices 304 divided by the spacers 302 .

[0054] Step 5: Cover the first base layer 100 and the first conductive layer 200 on the spacer 302. The first conductive layer 200 is located on the top of the spacer 302.

[0055] Step 6: Seal the edges of the first substrate layer 100 , the first conductive layer 200 , the liquid crystal layer 300 , the second conductive layer 400 , and the second substrate layer 500 .

[0056] The above steps are a brief description of the method for preparing the liquid crystal film for automobile glass in the present disclosure, and the order of step 1 to step 6 should not be interpreted as a limitation to the present disclosure. Example 2

[0057] like Figure 3 and Figure 4 As shown, the present disclosure provides a liquid crystal film for automobile glass, wherein the liquid crystal film for automobile glass includes a first substrate layer 100, a first conductive layer 200, a liquid crystal layer 300, a second conductive layer 400, and a second substrate layer 500. The first conductive layer 200 is attached to the first substrate layer 100, and the second conductive layer 400 is attached to the second substrate layer 500. The first conductive layer 200 and the second conductive layer 400 are arranged opposite to each other, and the liquid crystal layer 300 is located between the first conductive layer 200 and the second conductive layer 400.

[0058] The liquid crystal layer 300 includes a plurality of spacers 302 and a liquid crystal mixture 303. In an embodiment, the tops of the plurality of spacers 302 are firmly adhered to the first conductive layer 200, and the bottoms of the plurality of spacers 302 are firmly adhered to the second conductive layer 400. The plurality of spacers 302 divide the space between the first conductive layer 200 and the second conductive layer 400 into a plurality of lattices 304, and the liquid crystal mixture 303 is filled into the plurality of lattices 304. In an embodiment, the shape of each of the plurality of lattices 304 is a polygon.

[0059] Reference Figure 4 In an embodiment, the shape of each lattice in the plurality of lattices 304 is a regular hexagon to have higher strength and better high temperature and high pressure resistance.

[0060] The difference between Example 2 and Example 1 is that the liquid crystal layer 300 is located between the first conductive layer 200 and the second conductive layer 400, and the bottom plate 301 as in Example 1 is not provided. The top and bottom of the spacer 302 are directly attached to the first conductive layer 200 and the second conductive layer 400, respectively. The preparation method of the liquid crystal film for automobile glass of Example 2 is substantially the same as that of Example 1, except that in step 2, a curing glue is sprayed on the second conductive layer 400, and a mold having a spacer shape is used to print on the sprayed curing glue. The glue is cured by ultraviolet irradiation, thereby forming a plurality of spacers 302 on the second conductive layer 400. Example 3

[0061] refer to Figures 1 to 4 The present disclosure provides a liquid crystal film for automobile glass, wherein the liquid crystal film for automobile glass includes a first substrate layer 100, a first conductive layer 200, a liquid crystal layer 300, a second conductive layer 400, and a second substrate layer 500. The first conductive layer 200 is attached to the first substrate layer 100, and the second conductive layer 400 is attached to the second substrate layer 500. The first conductive layer 200 and the second conductive layer 400 are arranged opposite to each other, and the liquid crystal layer 300 is located between the first conductive layer 200 and the second conductive layer 400.

[0062] like Figure 1 and Figure 2 As shown, the liquid crystal layer 300 includes a bottom plate 301, a plurality of spacers 302, and a liquid crystal mixture 303. The bottom plate 301 is located on the second conductive layer 400, the plurality of spacers 302 are arranged perpendicular to the bottom plate 301, and the first conductive layer 200 is arranged on the plurality of spacers 302. The plurality of spacers 302 divide the space between the bottom plate 301 and the first conductive layer 200 into a plurality of lattices 304, and the liquid crystal mixture 303 is filled into the plurality of lattices 304. In an embodiment, the shape of each of the plurality of lattices 304 is a polygon. Figure 2 In an embodiment, the shape of each lattice in the plurality of lattices 304 is a regular hexagon.

[0063] like Figure 3 and Figure 4 As shown, the liquid crystal layer 300 includes a plurality of spacers 302 and a liquid crystal mixture 303. The tops of the plurality of spacers 302 are firmly adhered to the first conductive layer 200, and the bottoms of the plurality of spacers 302 are firmly adhered to the second conductive layer 400. The plurality of spacers 302 divide the space between the first conductive layer 200 and the second conductive layer 400 into a plurality of lattices 304, and the liquid crystal mixture 303 is filled into the plurality of lattices 304. In an embodiment, the shape of each of the plurality of lattices 304 is a polygon. Figure 4 In an embodiment, the shape of each lattice in the plurality of lattices 304 is a regular hexagon.

[0064] Example 3 is different from Example 1 or Example 2 in that the liquid crystal mixture 303 is formed by mixing GH liquid crystal, chiral agent and glue. The method for preparing the liquid crystal film for automobile glass of Example 3 is substantially the same as that of Example 1 or Example 2, except that in step 3, the liquid crystal mixture 303 is obtained by mixing with GH liquid crystal, chiral agent and photocurable glue. In this way, during lamination of the first substrate layer 100 and the second substrate layer 500, the top of the spacer 302 is directly bonded to the first conductive layer 200. Example 4

[0065] refer to Figure 1 , Figure 3 and Figure 5 The present disclosure provides a liquid crystal film for automobile glass, wherein the liquid crystal film for automobile glass includes a first substrate layer 100, a first conductive layer 200, a liquid crystal layer 300, a second conductive layer 400, and a second substrate layer 500. The first conductive layer 200 is attached to the first substrate layer 100, and the second conductive layer 400 is attached to the second substrate layer 500. The first conductive layer 200 and the second conductive layer 400 are arranged opposite to each other, and the liquid crystal layer 300 is located between the first conductive layer 200 and the second conductive layer 400.

[0066] like Figure 1 As shown, the liquid crystal layer 300 includes a bottom plate 301, a plurality of spacers 302, and a liquid crystal mixture 303. The bottom plate 301 is disposed on the second conductive layer 400, the plurality of spacers 302 are disposed perpendicular to the bottom plate 301, and the first conductive layer 200 is disposed on the plurality of spacers 302. The plurality of spacers 302 divide the space between the bottom plate 301 and the first conductive layer 200 into a plurality of lattices 304, and the liquid crystal mixture 303 is filled into the plurality of lattices 304. In an embodiment, the shape of each of the plurality of lattices 304 is a polygon.

[0067] like Figure 3As shown, the liquid crystal layer 300 includes a plurality of spacers 302 and a liquid crystal mixture 303. The tops of the plurality of spacers 302 are firmly adhered to the first conductive layer 200, and the bottoms of the plurality of spacers 302 are firmly adhered to the second conductive layer 400. The plurality of spacers 302 divide the space between the first conductive layer 200 and the second conductive layer 400 into a plurality of lattices 304, and the liquid crystal mixture 303 is filled into the plurality of lattices 304. In an embodiment, the shape of each of the plurality of lattices 304 is a polygon.

[0068] Reference Figure 5 In another embodiment, the shape of each lattice in the plurality of lattices 304 is a regular tetragon.

[0069] Example 4 is different from the above examples in that the shape of each of the plurality of lattices 304 is a regular tetragon. The plurality of lattices 304 having a regular tetragon shape can be implemented in an embodiment with or without the bottom plate 301 .

[0070] It should be noted that the technical solutions of the various embodiments of the present disclosure can be combined with each other, but must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and does not belong to the protection scope of the present disclosure.

[0071] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the patent scope of the present disclosure. All equivalent structural changes made using the description and drawings of the present disclosure, or directly or indirectly applied to other related technical fields, are also included in the patent protection scope of the present disclosure.

Claims

1. A liquid crystal film for automobile glass, comprising: first basal layer; a first conductive layer, wherein the first conductive layer is disposed on the first substrate layer; a second substrate layer, the second substrate layer being opposite to the first substrate layer; a second conductive layer, the second conductive layer being arranged on a side of the second substrate layer close to the first conductive layer; as well as a liquid crystal layer, the liquid crystal layer being disposed between the first conductive layer and the second conductive layer; The liquid crystal layer includes a plurality of spacers and a liquid crystal mixture; the plurality of spacers are vertically arranged between the first conductive layer and the second conductive layer, and divide the space between the first conductive layer and the second conductive layer into a plurality of lattices; the liquid crystal mixture is filled in the plurality of lattices; Wherein, each of the plurality of lattices is in the shape of a polygon.

2. The liquid crystal film for automobile glass according to claim 1, wherein: The liquid crystal layer further includes a bottom plate, which is disposed on the second conductive layer. The plurality of spacers are vertically disposed between the bottom plate and the second conductive layer and divide the space between the bottom plate and the second conductive layer into the plurality of lattices.

3. The liquid crystal film for automobile glass according to claim 1 or claim 2, wherein: The bottom plate and the plurality of lattices are integrally formed by curing adhesive.

4. The liquid crystal film for automobile glass according to any one of claims 1 to 3, wherein Each of the plurality of lattices has a regular hexagonal shape.

5. The liquid crystal film for automobile glass according to any one of claims 1 to 3, wherein Each of the plurality of lattices has a shape of a regular tetragon.

6. The liquid crystal film for automobile glass according to any one of claims 2 to 5, wherein The thickness of the base plate is in the range of 0.01 micrometers to 10 micrometers.

7. The liquid crystal film for automobile glass according to any one of claims 1 to 6, wherein The thickness of each of the plurality of spacers is in a range of 5 micrometers to 10 micrometers.

8. The liquid crystal film for automobile glass according to claim 4, wherein: Each of the plurality of lattices has a shape having a maximum diameter in a range of 30 micrometers to 10 millimeters.

9. The liquid crystal film for automobile glass according to any one of claims 1 to 8, wherein The liquid crystal mixture is formed by mixing liquid crystal, a chiral agent and a glue.

10. The liquid crystal film for automobile glass according to any one of claims 1 to 8, wherein The liquid crystal mixture is formed by mixing liquid crystals, a chiral agent, and fine particles.

11. The liquid crystal film for automobile glass according to claim 9 or 10, wherein: The liquid crystal is selected from any one of GH liquid crystal, TN liquid crystal, VA liquid crystal, ECB liquid crystal, PDLC liquid crystal, PNLC liquid crystal or PSCT liquid crystal.

12. The liquid crystal film for automobile glass according to any one of claims 1 to 11, wherein The first substrate layer and the second substrate layer are PET films or PC boards.

13. The liquid crystal film for automobile glass according to any one of claims 1 to 12, wherein The first conductive layer and the second conductive layer are transparent conductive layers.

14. A method for preparing a liquid crystal film for automobile glass, comprising: providing a first substrate layer and a second substrate layer; Disposing a first conductive layer on the first substrate layer, and disposing a second conductive layer on the second substrate layer; spraying a curing glue on the second conductive layer and imprinting a plurality of spacers on the second conductive layer through a mold, wherein the plurality of spacers define a plurality of lattices; preparing a liquid crystal mixture, and filling the liquid crystal mixture into the plurality of crystal lattices; covering the plurality of spacers and the plurality of lattices with the first base layer and the first conductive layer, wherein the first conductive layer is disposed on top of the plurality of spacers; as well as An edge of the first substrate layer, an edge of the first conductive layer, an edge of the liquid crystal layer, an edge of the second conductive layer, and an edge of the second substrate layer are sealed.

15. The method for preparing a liquid crystal film for automobile glass according to claim 14, wherein: Spraying curing glue on the second conductive layer and imprinting the plurality of spacers on the second conductive layer through a mold further comprises: The bottom plate is printed on the second conductive layer by the same mold.

16. The method for preparing a liquid crystal film for automobile glass according to claim 14 or 15, wherein: The liquid crystal mixture is formed by mixing liquid crystal, a chiral agent and a glue.

17. The method for preparing a liquid crystal film for automobile glass according to claim 14 or 15, wherein: The liquid crystal mixture is formed by mixing liquid crystals, a chiral agent, and fine particles.

18. The method for preparing a liquid crystal film for automobile glass according to claim 16 or 17, wherein: The liquid crystal is selected from any one of GH liquid crystal, TN liquid crystal, VA liquid crystal, ECB liquid crystal, PDLC liquid crystal, PNLC liquid crystal or PSCT liquid crystal.

19. The method for preparing a liquid crystal film for automobile glass according to any one of claims 14 to 18, wherein: Each of the plurality of lattices has a regular hexagonal shape.

20. The method for preparing a liquid crystal film for automobile glass according to any one of claims 14 to 18, wherein: Each of the plurality of lattices has a shape of a regular tetragon.

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