Manufacturing method of liquid crystal film and equipment for manufacturing liquid crystal film

Abstract

The invention provides a manufacturing method of a liquid crystal film and equipment for manufacturing the liquid crystal film, and the manufacturing method of the liquid crystal film comprises the following steps: applying a light-operated orientation layer on at least part of the surface of a base material; an exposure light source is controlled to irradiate a plurality of first areas of the light-operated alignment layer after passing through a plurality of second areas of a light modulator, the exposure light source can generate a plurality of beams of linearly polarized light with a first preset wavelength, the light modulator is provided with a first liquid crystal layer, and the arrangement directions of first liquid crystal molecules in the first liquid crystal layer in the same second area are the same; a second liquid crystal layer is applied to the surface of the light-operated orientation layer, and the arrangement direction of second liquid crystal molecules in the multiple areas of the second liquid crystal layer is parallel or perpendicular to the arrangement direction of orientation layer molecules in the multiple first areas of the light-operated orientation layer; and controlling light with a second preset wavelength to irradiate the second liquid crystal layer, so that the second liquid crystal molecules are subjected to cross-linking curing reaction to form the liquid crystal film. The manufacturing method can improve the production efficiency of the liquid crystal film.

Description

Technical Field

[0001] The present invention relates to the field of anti-counterfeiting technology, and in particular to a method for manufacturing a liquid crystal film and a device for manufacturing the liquid crystal film. Background Art

[0002] At present, in order to realize near-field or far-field image display through liquid crystal materials, liquid crystal materials are usually oriented by light orientation. The light-controlled orientation material undergoes a directional light reaction under linear polarized light of a specific wavelength and oriented, and drives the liquid crystal molecules in contact with it to be oriented through intermolecular action. In related technologies, when multi-domain orientation is required, the computer outputs graphic signals to control the reflection state of a single micromirror to act as a digital mask, thereby solving the registration problem of multiple exposure areas. However, after the exposure light is reflected by the lens array, it is necessary to obtain the required polarization direction through a linear polarizer. In order to obtain different molecular orientations, multi-step exposure is still required. Each time the exposure pattern is changed, the polarizer needs to be rotated to change the polarization direction of the light, which limits production efficiency. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] To this end, a first aspect of the present invention provides a method for manufacturing a liquid crystal film.

[0005] A second aspect of the present invention provides an apparatus for manufacturing a liquid crystal film.

[0006] In view of this, the first aspect of the present invention provides a method for manufacturing a liquid crystal film, comprising: applying a light-controlled orientation layer on at least a portion of the surface of a substrate; controlling an exposure light source to irradiate multiple first areas of the light-controlled orientation layer after passing through multiple second areas of a light modulator, wherein the exposure light source can generate linearly polarized light with a first preset wavelength, and the light modulator has a first liquid crystal layer, and the arrangement directions of first liquid crystal molecules in the first liquid crystal layer in the same second area are the same, and the arrangement directions of first liquid crystal molecules in the first liquid crystal layer in adjacent second areas are different; applying a second liquid crystal layer on the surface of the light-controlled orientation layer, wherein the arrangement directions of second liquid crystal molecules in multiple areas of the second liquid crystal layer are parallel or perpendicular to the arrangement directions of orientation layer molecules in multiple first areas of the light-controlled orientation layer; controlling light of the second preset wavelength to irradiate the second liquid crystal layer, so that the second liquid crystal molecules undergo a cross-linking and curing reaction to form a liquid crystal film.

[0007] In this technical solution, the method for manufacturing a liquid crystal film includes: applying a light-controlled orientation layer on at least part of the surface of a substrate, so that the substrate and the light-controlled orientation layer can be connected together. Controlling an exposure light source to pass through multiple second regions of a light modulator and then irradiate multiple first regions of the light-controlled orientation layer to achieve exposure of the light-controlled orientation layer. The exposure light source can generate multiple beams of linearly polarized light with a first preset wavelength, and the light modulator has a first liquid crystal layer. The arrangement directions of the first liquid crystal molecules in the first liquid crystal layer in the same second region are the same, and the arrangement directions of the first liquid crystal molecules in adjacent second regions are different, so that the exposure light source can generate multiple beams of linearly polarized light with different linear polarization directions through multiple regions of the light modulator, so that the light modulator can adjust the polarization direction of the linearly polarized exposure light passing through the light modulator, and the linear polarization directions of the light passing through different regions of the light modulator are different. The multiple first regions of the photo-controlled alignment layer are exposed by multiple beams of linear polarized light, so that the alignment layer molecules in the photo-controlled alignment layer undergo an oriented reaction after being irradiated with the linear polarized light; since the multiple beams of linear polarized light correspond to the multiple regions of the photo-controlled alignment layer, the long axis direction of the alignment layer molecules in the multiple regions of the photo-controlled alignment layer is parallel or perpendicular to the polarization direction of the corresponding linear polarized light, thereby achieving the rearrangement of the directions of the alignment layer molecules in the multiple regions of the photo-controlled alignment layer. A second liquid crystal layer is applied on the surface of the photo-controlled alignment layer to connect the second liquid crystal layer with the photo-controlled alignment layer. The arrangement direction of the second liquid crystal molecules in the multiple regions of the second liquid crystal layer is parallel or perpendicular to the arrangement direction of the alignment layer molecules in the multiple first regions of the photo-controlled alignment layer, thereby achieving the change of the arrangement direction of the second liquid crystal molecules in the multiple regions of the second liquid crystal layer, so that the second liquid crystal molecules in the multiple regions of the second liquid crystal layer have a specific arrangement direction. The light of the second preset wavelength is controlled to irradiate the second liquid crystal layer, so that the second liquid crystal molecules undergo a cross-linking and curing reaction to form a liquid crystal film. The cross-linking and curing reaction can make the interaction between the second liquid crystal molecules closer, so as to form a stable liquid crystal film. The present application can generate multiple beams of linearly polarized light with different linear polarization directions through multiple second regions of the light modulator to expose multiple orientation layers of the light-controlled orientation layer, so that the second liquid crystal molecules in multiple regions of the second liquid crystal layer have a specific arrangement direction to form a liquid crystal film. By using the light modulator to accurately control the polarization direction of the exposure light in a patterned manner, the multi-domain orientation of the second liquid crystal molecules can be achieved by one-step exposure, thereby improving the production efficiency of the liquid crystal film.

[0008] In addition, the method for manufacturing the liquid crystal film in the above technical solution provided by the present invention may also have the following additional technical features: In a technical solution of the present invention, optionally, the number of the first liquid crystal layer is at least one layer, and the thickness of the first liquid crystal layer satisfies a half-wave plate condition relative to the first preset wavelength.

[0009] In this technical solution, the number of the first liquid crystal layer is at least one layer, so that the light modulator can adjust the light generated by the exposure light source. The thickness of the first liquid crystal layer satisfies the half-wave plate condition relative to the first preset wavelength, so that the exposure light can be converted into linear polarized light with different polarization directions after passing through the light modulator.

[0010] In a technical solution of the present invention, optionally, after applying the photo-alignment layer on at least a portion of the surface of the substrate, the method for manufacturing the liquid crystal film further comprises: controlling a drying device to dry the photo-alignment layer to remove the solvent in the photo-alignment layer.

[0011] In this technical solution, after applying the photo-controlled alignment layer to at least a portion of the surface of the substrate, the drying device is controlled to dry the photo-controlled alignment layer. The drying process is used to remove the solvent in the photo-controlled alignment layer, making the photo-controlled alignment layer drier and more uniform, which helps to improve the ability of the photo-controlled alignment layer molecules to undergo a directional reaction under the irradiation of linearly polarized exposure light of a first preset wavelength.

[0012] In one technical solution of the present invention, optionally, a second liquid crystal layer is applied on the surface of the photo-controlled orientation layer, wherein the arrangement direction of the second liquid crystal molecules in multiple regions of the second liquid crystal layer is parallel or perpendicular to the arrangement direction of the orientation layer molecules in multiple first regions of the photo-controlled orientation layer. The method for manufacturing the liquid crystal film also includes: adjusting the temperature of the second liquid crystal layer to a first preset temperature so that the second liquid crystal layer is in a liquid crystal phase, and drying the second liquid crystal layer to remove the solvent.

[0013] In this technical solution, the temperature of the second liquid crystal layer is adjusted to a first preset temperature so that the second liquid crystal layer is in a liquid crystal phase, and the second liquid crystal layer is dried to remove the solvent. The temperature increase can promote the directional arrangement of the second liquid crystal molecules in the second liquid crystal layer. The drying process and the removal of the solvent can facilitate the cross-linking reaction of the second liquid crystal molecules under the irradiation of light of the second preset wavelength.

[0014] In a technical solution of the present invention, optionally, the first preset temperature is greater than or equal to 50°C and less than or equal to 120°C.

[0015] In this technical solution, the first preset temperature is greater than or equal to 50°C and less than or equal to 120°C to adjust the temperature of the second liquid crystal layer. By setting the first preset temperature to 50°C to 120°C, the molecules in the second liquid crystal layer can promote the directional arrangement of the second liquid crystal molecules in the second liquid crystal layer.

[0016] In a technical solution of the present invention, optionally, the first preset wavelength is greater than or equal to 190 nm and less than or equal to 510 nm.

[0017] In this technical solution, the first preset wavelength is greater than or equal to 190nm and less than or equal to 510nm, so that the first preset wavelength can be adjusted by setting the wavelength of the linearly polarized light to 190nm to 510nm so that the molecules in the alignment layer undergo a directional reaction.

[0018] In a technical solution of the present invention, optionally, the second preset wavelength is greater than or equal to 190 nm and less than or equal to 510 nm.

[0019] In this technical solution, the second preset wavelength is greater than or equal to 190nm and less than or equal to 510nm, so as to adjust the second preset wavelength. By setting the second preset wavelength to 190nm to 510nm, the second liquid crystal molecules in the second liquid crystal layer can undergo a cross-linking reaction.

[0020] In one technical solution of the present invention, optionally, applying a photo-controlled alignment layer on at least a portion of the surface of the substrate comprises: coating the photo-controlled alignment layer on at least a portion of the surface of the substrate; or printing the photo-controlled alignment layer on at least a portion of the surface of the substrate; or spraying the photo-controlled alignment layer on at least a portion of the surface of the substrate.

[0021] In this technical solution, a light-controlled alignment layer is coated on at least part of the surface of the substrate to achieve the arrangement of the light-controlled alignment layer. A light-controlled alignment layer is printed on at least part of the surface of the substrate to achieve the arrangement of the light-controlled alignment layer. A light-controlled alignment layer is sprayed on at least part of the surface of the substrate to achieve the arrangement of the light-controlled alignment layer.

[0022] In one technical solution of the present invention, optionally, applying a second liquid crystal layer on the surface of the photo-controlled alignment layer includes: coating the second liquid crystal layer on the surface of the photo-controlled alignment layer; or printing the second liquid crystal layer on the surface of the photo-controlled alignment layer; or spraying the second liquid crystal layer on the surface of the photo-controlled alignment layer.

[0023] In this technical solution, the second liquid crystal layer is coated on the surface of the light-controlled alignment layer to achieve the arrangement of the second liquid crystal layer. The second liquid crystal layer is printed on the surface of the light-controlled alignment layer to achieve the arrangement of the second liquid crystal layer. The second liquid crystal layer is sprayed on the surface of the light-controlled alignment layer to achieve the arrangement of the second liquid crystal layer.

[0024] The second aspect of the present invention provides a device for making a liquid crystal film, comprising: a first application device, an exposure device, a second application device and a curing device. The first application device is used to apply a light-controlled orientation layer on at least part of the surface of a substrate; the exposure device comprises an exposure light source and a light modulator, the exposure light source passes through multiple second regions of the light modulator and then irradiates multiple first regions of the light-controlled orientation layer, wherein the exposure light source can generate multiple beams of linearly polarized light with a first preset wavelength, the light modulator has a first liquid crystal layer, the arrangement directions of the first liquid crystal molecules in the first liquid crystal layer in the same second region are the same, and the arrangement directions of the first liquid crystal molecules in the first liquid crystal layer in adjacent second regions are different; the second application device is used to apply a second liquid crystal layer on the surface of the light-controlled orientation layer, wherein the arrangement directions of the second liquid crystal molecules in multiple regions of the second liquid crystal layer are parallel or perpendicular to the arrangement directions of the orientation layer molecules in multiple first regions of the light-controlled orientation layer; the curing device is used to control the light of the second preset wavelength to irradiate the second liquid crystal layer, so that the second liquid crystal molecules undergo a cross-linking and curing reaction to form a liquid crystal film.

[0025] In the technical solution, the equipment for making liquid crystal film includes: a first application device, an exposure device, a second application device and a curing device. The first application device is used to apply a light-controlled alignment layer on at least part of the surface of the substrate, so that the substrate and the light-controlled alignment layer can be connected together. The exposure device includes an exposure light source and a light modulator, the exposure light source passes through multiple second regions of the light modulator and then irradiates multiple first regions of the light-controlled alignment layer, wherein the exposure light source can generate multiple beams of linearly polarized light with a first preset wavelength, the light modulator has a first liquid crystal layer, the arrangement direction of the first liquid crystal molecules in the first liquid crystal layer in the same second region is the same, and the arrangement direction of the first liquid crystal molecules in the first liquid crystal layer in adjacent second regions is different, multiple beams of linearly polarized light with different linear polarization directions can be generated through multiple regions of the light modulator, and the light modulator is used to control the multiple beams of linearly polarized light to expose multiple regions of the light-controlled alignment layer; multiple beams of linearly polarized light with different linear polarization directions can be generated through multiple regions of the light modulator, so that the light modulator can adjust the polarization direction of the exposure light passing through the light modulator, and the linear polarization directions of the light passing through different regions of the light modulator are different. The multiple first regions of the photo-controlled orientation layer are exposed by multiple beams of linearly polarized light, so that the orientation layer molecules in the photo-controlled orientation layer undergo a directional reaction after being irradiated with the linearly polarized light; since the multiple beams of linearly polarized light correspond to the multiple regions of the photo-controlled orientation layer, the long axis direction of the orientation layer molecules in the multiple regions of the photo-controlled orientation layer is parallel or perpendicular to the polarization direction of the corresponding linearly polarized light, thereby achieving rearrangement of the directions of the orientation layer molecules in the multiple regions of the photo-controlled orientation layer. The second application device is used to apply a second liquid crystal layer on the surface of the photo-controlled orientation layer to connect the second liquid crystal layer to the photo-controlled orientation layer. The arrangement directions of the second liquid crystal molecules in the multiple regions of the second liquid crystal layer are parallel or perpendicular to the arrangement directions of the orientation layer molecules in the multiple first regions of the photo-controlled orientation layer, thereby achieving a change in the arrangement directions of the second liquid crystal molecules in the multiple regions of the second liquid crystal layer, so that the second liquid crystal molecules in the multiple regions of the second liquid crystal layer have a specific arrangement direction. The curing device includes a curing light source for emitting light of a second preset wavelength to irradiate the second liquid crystal layer, so that the second liquid crystal molecules undergo a cross-linking curing reaction to form a liquid crystal film, and controlling the light of the second preset wavelength to irradiate the second liquid crystal layer, so that the second liquid crystal molecules undergo a cross-linking curing reaction to form a liquid crystal film. The cross-linking curing reaction can make the interaction between the second liquid crystal molecules closer, so as to form a stable liquid crystal film. The present application can generate multiple beams of linearly polarized light with different linear polarization directions through multiple second regions of the light modulator to expose multiple orientation layers of the light-controlled orientation layer, so that the second liquid crystal molecules in multiple regions of the second liquid crystal layer have a specific arrangement direction to form a liquid crystal film. The light modulator can accurately control the polarization direction of the exposure light in a patterned manner, and the multi-domain orientation of the second liquid crystal molecules can be realized by one-step exposure, thereby improving the production efficiency of the liquid crystal film.

[0026] In a technical solution of the present invention, optionally, the device for manufacturing the liquid crystal film further includes a drying device, and the drying device is used to dry the photo-controlled alignment layer to remove the solvent in the photo-controlled alignment layer.

[0027] In this technical solution, the equipment for making liquid crystal film also includes a drying device, which is used to dry the photo-controlled alignment layer to remove the solvent in the photo-controlled alignment layer so that the molecules in the photo-controlled alignment layer can undergo a directional reaction under the irradiation of linearly polarized exposure light of a first preset wavelength.

[0028] In one technical solution of the present invention, optionally, the equipment for making the liquid crystal film also includes an orientation buffer device, which is used to adjust the temperature of the second liquid crystal layer to a first preset temperature, so that the second liquid crystal layer is in a liquid crystal phase, and dry the second liquid crystal layer to remove the solvent.

[0029] In this technical solution, the temperature of the second liquid crystal layer is adjusted to a first preset temperature through an orientation buffer device, so that the second liquid crystal layer is in a liquid crystal phase, and the second liquid crystal layer is dried to remove the solvent. The temperature increase can promote the oriented arrangement of the second liquid crystal molecules in the second liquid crystal layer. The drying process and the removal of the solvent can facilitate the cross-linking reaction of the second liquid crystal molecules under the irradiation of light of the second preset wavelength.

[0030] In a technical solution of the present invention, optionally, the first preset wavelength ranges from 190 nm to 510 nm, and the second preset wavelength ranges from 190 nm to 510 nm.

[0031] In one technical solution of the present invention, optionally, the exposure light source can emit quasi-linear polarized light of a first preset wavelength; the light modulator is located between the exposure light source and the substrate, and is used to modulate the polarization direction of the quasi-linear polarized light so that the light passing through the light modulator has different linear polarization directions.

[0032] In this technical solution, the exposure light source can emit a quasi-linear polarized light of a first preset wavelength, so as to improve the accuracy of the exposure light source irradiating the light modulator. The light modulator is located between the exposure light source and the substrate, and is used to modulate the polarization direction of the quasi-linear polarized light, so that the light emitted by the exposure light source can form multiple beams of linear polarized light with different linear polarization directions after passing through the light modulator.

[0033] In the technical solution, the curing device includes a curing light source, which can emit light of a second preset wavelength. The second preset wavelength is greater than or equal to 190nm and less than or equal to 510nm, so as to adjust the second preset wavelength, and by setting the second preset wavelength to 190nm to 510nm, a cross-linking reaction occurs in the second liquid crystal molecules in the second liquid crystal layer.

[0034] In a technical solution of the present invention, optionally, the device for manufacturing a liquid crystal film further includes a cyclic operation device, which is used to drive the light modulator and the substrate to move synchronously along a first direction at a first speed.

[0035] In this technical solution, the equipment for making liquid crystal film also includes a circulating operation device, which is used to drive the light modulator and the substrate to move synchronously along a first direction at a first speed, so that the multiple beams of linearly polarized light formed after passing through the light modulator can be accurately irradiated into multiple areas of the light-controlled orientation layer, thereby improving the stability of exposure to the light-controlled orientation layer, improving the accuracy of the directional reaction of the orientation layer molecules in the light-controlled orientation layer, and improving the accuracy of arranging the directions of the orientation layer molecules in multiple areas of the light-controlled orientation layer.

[0036] In a technical solution of the present invention, optionally, the device for manufacturing a liquid crystal film further includes a surface treatment device, and the surface treatment device is used to clean the surface of the substrate and / or adjust the surface energy.

[0037] In this technical solution, the liquid crystal film device also includes a surface treatment device, which is used to clean the surface of the substrate and / or adjust the surface energy. By cleaning the surface of the substrate, impurities on the surface of the substrate can be removed and the flatness of the surface of the substrate can be improved. By adjusting the surface energy of the substrate surface, the spreadability and adhesion of the light-controlled alignment layer on the substrate surface can be improved, ensuring that the light-controlled alignment layer can be evenly attached to the substrate, and improving the stability and durability of the light-controlled alignment layer after arrangement.

[0038] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 A schematic diagram of a process of manufacturing a liquid crystal film according to an embodiment of the present invention is shown; Figure 2 A schematic block diagram of a device for manufacturing a liquid crystal film according to an embodiment of the present invention is shown; Figure 3 A schematic diagram showing a closed-loop operation of an optical modulator according to an embodiment of the present invention is shown; Figure 4 A structural entity diagram showing a flat-plate type light modulator according to an embodiment of the present invention; Figure 5 A schematic diagram showing how linearly polarized exposure light is converted into linearly polarized light with different polarization directions after passing through different regions of a light modulator according to an embodiment of the present invention; Figure 6 A schematic diagram of an optical modulator according to an embodiment of the present invention is shown; Figure 7 A schematic diagram of a substrate, a photo-control alignment layer and a second liquid crystal layer according to an embodiment of the present invention is shown.

[0040] in, Figures 1 to 7 The corresponding relationship between the reference numerals and component names in the figure is: 200 Equipment for making liquid crystal film, 202 first application device, 204 exposure device, 206 exposure light source, 208 light modulator, 216 circulating operation device, 220 second application device, 222 orientation buffer device, 224 curing device, 226 drying device, 230 first guide roller, 232 second guide roller, 310 substrate, 320 light control orientation layer, 330 second liquid crystal layer, 340 first liquid crystal layer. DETAILED DESCRIPTION

[0041] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0042] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0043] Refer to the following Figures 1 to 7 A method for manufacturing a liquid crystal film and an apparatus 200 for manufacturing a liquid crystal film according to some embodiments of the present invention are described.

[0044] like Figure 1 As shown, Figure 1 One of the flow charts of a method for manufacturing a liquid crystal film according to an embodiment of the present invention is shown. A first aspect of the present invention provides a method for manufacturing a liquid crystal film, comprising: S102, applying a photo-controlled alignment layer on at least a portion of the surface of the substrate; S104, controlling the exposure light source to irradiate the plurality of first regions of the light control alignment layer after passing through the plurality of second regions of the light modulator, wherein the exposure light source can generate linearly polarized light having a first preset wavelength, the light modulator has a first liquid crystal layer, the arrangement directions of the first liquid crystal molecules in the first liquid crystal layer in the same second region are the same, and the arrangement directions of the first liquid crystal molecules in the first liquid crystal layers in adjacent second regions are different; S106, applying a second liquid crystal layer on the surface of the light-controlled alignment layer, wherein the arrangement direction of the second liquid crystal molecules in the plurality of regions of the second liquid crystal layer is parallel or perpendicular to the arrangement direction of the alignment layer molecules in the plurality of first regions of the light-controlled alignment layer; S108, controlling the light of the second preset wavelength to irradiate the second liquid crystal layer, so that the second liquid crystal molecules undergo a cross-linking and curing reaction to form a liquid crystal film.

[0045] In this embodiment, the method for manufacturing a liquid crystal film includes: applying a light-controlled orientation layer on at least a portion of the surface of a substrate, so that the substrate and the light-controlled orientation layer can be connected together. Controlling an exposure light source to pass through multiple second regions of a light modulator and then irradiate multiple first regions of the light-controlled orientation layer to achieve exposure of the light-controlled orientation layer. The exposure light source can generate multiple beams of linearly polarized light with a first preset wavelength, and the light modulator has a first liquid crystal layer. The arrangement directions of the first liquid crystal molecules in the first liquid crystal layer in the same second region are the same, and the arrangement directions of the first liquid crystal molecules in adjacent second regions are different, so that the exposure light source can generate multiple beams of linearly polarized light with different linear polarization directions through multiple regions of the light modulator, so that the light modulator can adjust the polarization direction of the linearly polarized exposure light passing through the light modulator, and the linear polarization directions of the light passing through different regions of the light modulator are different. The multiple first regions of the photo-controlled alignment layer are exposed by multiple beams of linear polarized light, so that the alignment layer molecules in the photo-controlled alignment layer undergo an oriented reaction after being irradiated with the linear polarized light; since the multiple beams of linear polarized light correspond to the multiple regions of the photo-controlled alignment layer, the long axis direction of the alignment layer molecules in the multiple regions of the photo-controlled alignment layer is parallel or perpendicular to the polarization direction of the corresponding linear polarized light, thereby achieving the rearrangement of the directions of the alignment layer molecules in the multiple regions of the photo-controlled alignment layer. A second liquid crystal layer is applied on the surface of the photo-controlled alignment layer to connect the second liquid crystal layer with the photo-controlled alignment layer. The arrangement direction of the second liquid crystal molecules in the multiple regions of the second liquid crystal layer is parallel or perpendicular to the arrangement direction of the alignment layer molecules in the multiple first regions of the photo-controlled alignment layer, thereby achieving the change of the arrangement direction of the second liquid crystal molecules in the multiple regions of the second liquid crystal layer, so that the second liquid crystal molecules in the multiple regions of the second liquid crystal layer have a specific arrangement direction. The light of the second preset wavelength is controlled to irradiate the second liquid crystal layer, so that the second liquid crystal molecules undergo a cross-linking and curing reaction to form a liquid crystal film. The cross-linking and curing reaction can make the interaction between the second liquid crystal molecules closer, so as to form a stable liquid crystal film. The present application can generate multiple beams of linearly polarized light with different linear polarization directions through multiple second regions of the light modulator to expose multiple orientation layers of the light-controlled orientation layer, so that the second liquid crystal molecules in multiple regions of the second liquid crystal layer have a specific arrangement direction to form a liquid crystal film. By using the light modulator to accurately control the polarization direction of the exposure light in a patterned manner, the multi-domain orientation of the second liquid crystal molecules can be achieved by one-step exposure, thereby improving the production efficiency of the liquid crystal film.

[0046] Specifically, a second liquid crystal layer is applied on the surface of the photo-controlled alignment layer, and under the action of the alignment layer molecules in the photo-controlled alignment layer in contact with it, the second liquid crystal molecules are arranged in a specific direction, that is, the arrangement direction of the second liquid crystal molecules in multiple regions of the second liquid crystal layer is parallel or perpendicular to the arrangement direction of the alignment layer molecules in multiple first regions of the photo-controlled alignment layer.

[0047] Specifically, the multiple second regions include at least two sub-regions, that is, the first liquid crystal layer constituting the light modulator includes at least two sub-regions, the first liquid crystal molecules in the same sub-region have the same direction, and the first liquid crystal molecules in adjacent sub-regions have different directions. The linearly polarized light of the first preset wavelength is still linearly polarized light after passing through different sub-regions, but the linear polarization direction of the light passing through different sub-regions is deflected at different angles. By setting the first liquid crystal molecules in different sub-regions to have different directions, the polarization direction of the linearly polarized light can be adjusted. By using the light modulator to perform patterned and precise control of the polarization direction of the exposure light, multi-domain orientation of the liquid crystal molecules can be achieved by one-step exposure.

[0048] Specifically, the light of the first preset wavelength is a beam of parallel light with a single polarization direction.

[0049] Specifically, the liquid crystal layer includes multiple liquid crystal domains. The production method of the present application can form a multi-domain liquid crystal film, so that a specific anti-counterfeiting pattern can be formed on the liquid crystal film, and multiple composite anti-counterfeiting features such as polarized images and holographic images can be realized.

[0050] Specifically, during the exposure process of the photo-alignment layer, the light modulator and the substrate remain relatively still, thereby ensuring that the linearly polarized light passing through the light modulator can irradiate the photo-alignment layer.

[0051] In one embodiment of the present invention, optionally, the number of the first liquid crystal layer is at least one layer, and the thickness of the first liquid crystal layer satisfies a half-wave plate condition relative to the first preset wavelength.

[0052] In this embodiment, the number of the first liquid crystal layer is at least one layer, so that the light modulator can adjust the light generated by the exposure light source. The thickness of the first liquid crystal layer satisfies the half-wave plate condition relative to the first preset wavelength, so that the exposure light can be converted into linear polarized light with different polarization directions after passing through the light modulator.

[0053] In one embodiment of the present invention, after applying the photo-alignment layer on at least a portion of the surface of the substrate, the method for manufacturing the liquid crystal film further comprises: controlling a drying device to dry the photo-alignment layer to remove the solvent in the photo-alignment layer.

[0054] In this embodiment, after applying the photo-controlled alignment layer to at least a portion of the surface of the substrate, the drying device is controlled to dry the photo-controlled alignment layer to remove the solvent in the photo-controlled alignment layer, so that the molecules of the photo-controlled alignment layer can undergo a directional reaction under the irradiation of linearly polarized exposure light of a first preset wavelength.

[0055] In one embodiment of the present invention, optionally, after a second liquid crystal layer is applied on the surface of the photo-controlled orientation layer, wherein the arrangement direction of second liquid crystal molecules in multiple regions of the second liquid crystal layer is parallel or perpendicular to the arrangement direction of the orientation layer molecules in multiple first regions of the photo-controlled orientation layer, the method for manufacturing the liquid crystal film further includes: adjusting the temperature of the second liquid crystal layer to a first preset temperature so that the second liquid crystal layer is in a liquid crystal phase, and drying the second liquid crystal layer to remove the solvent.

[0056] In this embodiment, the temperature of the second liquid crystal layer is adjusted to a first preset temperature so that the second liquid crystal layer is in a liquid crystal phase, and the second liquid crystal layer is dried to remove the solvent. The temperature increase can promote the directional arrangement of the second liquid crystal molecules in the second liquid crystal layer. The drying process and the removal of the solvent can facilitate the cross-linking reaction of the second liquid crystal molecules under the irradiation of light of the second preset wavelength.

[0057] In one embodiment of the present invention, optionally, during the exposure of the photo-controlled alignment layer, the cyclic operation device is controlled to drive the light modulator and the substrate to move synchronously along a first direction at a first speed.

[0058] In this embodiment, during the exposure of the photo-controlled orientation layer, the circulating operation device is controlled to drive the light modulator and the substrate to move synchronously along a first direction at a first speed, so that the multiple beams of linearly polarized light formed after passing through the light modulator can be accurately irradiated into multiple areas of the photo-controlled orientation layer, thereby improving the stability of the exposure of the photo-controlled orientation layer, improving the accuracy of the directional reaction of the orientation layer molecules in the photo-controlled orientation layer, and improving the accuracy of the rearrangement of the directions of the orientation layer molecules in multiple areas of the photo-controlled orientation layer.

[0059] In one embodiment of the present invention, optionally, the first preset temperature is greater than or equal to 50° C. and less than or equal to 120° C.

[0060] In this embodiment, the first preset temperature is greater than or equal to 50° C. and less than or equal to 120° C. to adjust the temperature of the second liquid crystal layer. By setting the first preset temperature to 50° C. to 120° C., the molecules in the second liquid crystal layer can promote the alignment of the second liquid crystal molecules in the second liquid crystal layer.

[0061] Specifically, the first preset temperature is equal to 50°C.

[0062] Specifically, the first preset temperature is equal to 120°C.

[0063] In one embodiment of the present invention, optionally, the first preset wavelength is greater than or equal to 190 nm and less than or equal to 510 nm; the second preset wavelength is greater than or equal to 190 nm and less than or equal to 510 nm.

[0064] In this embodiment, the first preset wavelength is greater than or equal to 190 nm and less than or equal to 510 nm, so as to adjust the wavelength of the linearly polarized light. By setting the wavelength of the linearly polarized light to 190 nm to 510 nm, the molecules in the alignment layer can undergo a directional reaction.

[0065] In one embodiment of the present invention, optionally, the second preset wavelength is greater than or equal to 190 nm and less than or equal to 510 nm.

[0066] In this embodiment, the second preset wavelength is greater than or equal to 190nm and less than or equal to 510nm, so that the second preset wavelength can be adjusted. By setting the second preset wavelength to 190nm to 510nm, the second liquid crystal molecules in the second liquid crystal layer undergo a cross-linking reaction.

[0067] Specifically, the first preset wavelength is 190 nm.

[0068] Specifically, the first preset wavelength is 400 nm.

[0069] Specifically, the first preset wavelength is 510 nm.

[0070] Specifically, the second preset wavelength is equal to 190 nm.

[0071] Specifically, the second preset wavelength is 400 nm.

[0072] Specifically, the second preset wavelength is equal to 510 nm.

[0073] Specifically, the linearly polarized light is a collimated light, which is vertically irradiated onto the surface of the photo-controlled alignment layer, thereby improving the stability of the directional reaction of the alignment layer molecules in the photo-controlled alignment layer.

[0074] In one embodiment of the present invention, optionally, applying a photo-controlled alignment layer on at least a portion of the surface of the substrate comprises: coating the photo-controlled alignment layer on at least a portion of the surface of the substrate; or printing the photo-controlled alignment layer on at least a portion of the surface of the substrate; or spraying and applying the photo-controlled alignment layer on at least a portion of the surface of the substrate.

[0075] In this embodiment, the photo-controlled alignment layer is coated on at least part of the surface of the substrate to achieve the arrangement of the photo-controlled alignment layer. The photo-controlled alignment layer is printed on at least part of the surface of the substrate to achieve the arrangement of the photo-controlled alignment layer. The photo-controlled alignment layer is sprayed on at least part of the surface of the substrate to achieve the arrangement of the photo-controlled alignment layer.

[0076] In one embodiment of the present invention, optionally, applying a second liquid crystal layer on the surface of the photo-controlled alignment layer includes: coating the second liquid crystal layer on the surface of the photo-controlled alignment layer; or printing the second liquid crystal layer on the surface of the photo-controlled alignment layer; or spraying the second liquid crystal layer on the surface of the photo-controlled alignment layer.

[0077] In this embodiment, the second liquid crystal layer is coated on the surface of the light-controlled alignment layer to achieve the arrangement of the second liquid crystal layer. The second liquid crystal layer is printed on the surface of the light-controlled alignment layer to achieve the arrangement of the second liquid crystal layer. The second liquid crystal layer is sprayed on the surface of the light-controlled alignment layer to achieve the arrangement of the second liquid crystal layer.

[0078] Specifically, the light modulator is a flexible liquid crystal film, and the first liquid crystal molecules inside the light modulator are cross-linked in a predetermined direction to form a flexible film, and the molecular arrangement direction no longer changes.

[0079] Specifically, the light modulator is a flexible liquid crystal film, and first liquid crystal molecules in different regions of the light modulator are cross-linked in a predetermined direction to form a flexible film, and the molecular arrangement direction no longer changes.

[0080] In one embodiment of the present invention, Figure 2 As shown, Figure 2 1 shows a schematic block diagram of a device 200 for making a liquid crystal film according to an embodiment of the present invention, and provides a device 200 for making a liquid crystal film, comprising: a first application device 202, an exposure device 204, a second application device 220 and a curing device 224. The first application device 202 is used to apply a photo-controlled alignment layer 320 on at least a portion of the surface of a substrate 310; Figure 3 and Figure 4 As shown, Figure 3 A schematic diagram showing the closed-loop operation of the optical modulator 208 according to an embodiment of the present invention is shown; Figure 4 FIG. 2 shows a structural entity diagram of a flat-plate light modulator 208 according to an embodiment of the present invention. The exposure device 204 includes an exposure light source 206 and a light modulator 208. The exposure light source 206 irradiates multiple first regions of the light control alignment layer 320 after passing through multiple second regions of the light modulator 208. Figure 5 and Figure 6 As shown, Figure 5 A schematic diagram showing how different regions of the exposure light modulator 208 are converted into linearly polarized light with different polarization directions according to an embodiment of the present invention; Figure 6A schematic diagram of a light modulator 208 according to an embodiment of the present invention is shown, wherein the exposure light source 206 is capable of generating multiple beams of linearly polarized light having a first preset wavelength, the light modulator 208 has a first liquid crystal layer 340, the arrangement directions of the first liquid crystal molecules in the first liquid crystal layer 340 in the same second region are the same, and the arrangement directions of the first liquid crystal molecules in the first liquid crystal layer 340 in adjacent second regions are different; the second application device 220 is used to apply the second liquid crystal layer 330 on the surface of the light-controlled orientation layer 320, wherein the arrangement directions of the second liquid crystal molecules in multiple regions of the second liquid crystal layer 330 are parallel or perpendicular to the arrangement directions of the orientation layer molecules in multiple first regions of the light-controlled orientation layer 320; the curing device 224 is used to control the light of the second preset wavelength to irradiate the second liquid crystal layer 330, so that the second liquid crystal molecules undergo a cross-linking and curing reaction to form a liquid crystal film.

[0081] In this embodiment, the device 200 for manufacturing a liquid crystal film includes: a first application device 202, an exposure device 204, a second application device 220 and a curing device 224. Figure 7 As shown, Figure 7A schematic diagram of a photo-alignment layer 320 according to an embodiment of the present invention is shown; the first application device 202 is used to apply the photo-alignment layer 320 on at least a portion of the surface of the substrate 310, so that the substrate 310 and the photo-alignment layer 320 can be connected together. The exposure device 204 includes an exposure light source 206 and a light modulator 208. The exposure light source 206 irradiates multiple first areas of the light control orientation layer 320 after passing through multiple second areas of the light modulator 208, wherein the exposure light source 206 can generate multiple beams of linearly polarized light with a first preset wavelength, and the light modulator 208 has a first liquid crystal layer 340. The arrangement directions of the first liquid crystal molecules in the first liquid crystal layer 340 in the same second area are the same, and the arrangement directions of the first liquid crystal molecules in the first liquid crystal layer 340 in adjacent second areas are different. Multiple beams of linearly polarized light with different linear polarization directions can be generated through the multiple areas of the light modulator 208. The light modulator 208 is used to control the multiple beams of linearly polarized light to expose the multiple areas of the light control orientation layer 320; multiple beams of linearly polarized light with different linear polarization directions can be generated through the multiple areas of the light modulator 208, so that the light modulator 208 can adjust the polarization direction of the linearly polarized exposure light passing through the light modulator 208, and the linear polarization directions of the light passing through different areas of the light modulator 208 are different. The multiple first regions of the photo-controlled alignment layer 320 are exposed by multiple beams of linearly polarized light, so that the alignment layer molecules in the photo-controlled alignment layer 320 undergo a directional reaction after being irradiated with the linearly polarized light; since the multiple beams of linearly polarized light correspond to the multiple regions of the photo-controlled alignment layer 320, the long axis direction of the alignment layer molecules in the multiple regions of the photo-controlled alignment layer 320 is parallel or perpendicular to the polarization direction of the corresponding linearly polarized light, thereby rearranging the directions of the alignment layer molecules in the multiple regions of the photo-controlled alignment layer 320 to change the directions of the alignment layer molecules in the multiple regions of the photo-controlled alignment layer 320. The second application device 220 is used to apply the second liquid crystal layer 330 on the surface of the photo-controlled alignment layer 320 to connect the second liquid crystal layer 330 with the photo-controlled alignment layer 320. The arrangement direction of the second liquid crystal molecules in the multiple regions of the second liquid crystal layer 330 is parallel or perpendicular to the arrangement direction of the alignment layer molecules in the multiple first regions of the light-controlled alignment layer 320, thereby changing the arrangement direction of the second liquid crystal molecules in the multiple regions of the second liquid crystal layer 330, so that the second liquid crystal molecules in the multiple regions of the second liquid crystal layer 330 have a specific arrangement direction. The curing device 224 is used to control the light of the second preset wavelength to irradiate the liquid crystal layer 330, so that the second liquid crystal molecules undergo a cross-linking curing reaction, and the cross-linking curing reaction can make the interaction between the second liquid crystal molecules more compact, so as to form a stable liquid crystal film.In the present application, multiple second regions of the light modulator 208 can generate multiple beams of linearly polarized light with different linear polarization directions to expose multiple orientation layers of the light-controlled orientation layer 320, so that the second liquid crystal molecules in multiple regions of the second liquid crystal layer 330 can have specific arrangement directions. By using the light modulator 208 to perform patterned and precise control of the polarization direction of the exposure light, multi-domain orientation of the second liquid crystal molecules can be achieved by one-step exposure, thereby improving the production efficiency of the liquid crystal film.

[0082] Specifically, the exposure device 204 also includes a linear polarization filter, which is located between the light modulator 208 and the exposure light source 206. The exposure light source 206 is used to emit light of a first preset wavelength, which passes through the linear polarization filter and the light modulator 208 in sequence and irradiates the light control orientation layer 320 to expose it. The linear polarization filter is used to convert the light of the first preset wavelength emitted by the exposure light source 206 into linear polarized light. After the linear polarized light passes through different sub-regions of the light modulator 208, the linear polarization direction is deflected at different angles and irradiates different regions of the light control orientation layer 320.

[0083] Specifically, the first preset temperature is greater than or equal to 50° C. and less than or equal to 120° C.

[0084] Specifically, the first preset temperature is equal to 50°C.

[0085] Specifically, the first preset temperature is equal to 120°C.

[0086] Specifically, in Figure 2 In FIG. 3 , arrow D indicates the moving direction of the substrate 310 .

[0087] Specifically, in Figure 5 In FIG. 2 , arrow F indicates the exposure light emitted by the exposure light source 206 , and arrow G indicates the polarization direction of the linearly polarized light.

[0088] Specifically, in Figure 6 In the figure, multiple arrows indicate the polarization directions of the linearly polarized light after adjustment.

[0089] This embodiment provides a device 200 for manufacturing a liquid crystal film. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0090] like Figure 2 As shown, the device 200 for manufacturing a liquid crystal film further includes a drying device 226 , and the drying device 226 is used to dry the photo-alignment layer 320 to remove the solvent in the photo-alignment layer 320 .

[0091] In this embodiment, the device 200 for manufacturing a liquid crystal film further includes a drying device 226, which is used to dry the photo-controlled alignment layer 320 to remove the solvent in the photo-controlled alignment layer 320, so that the alignment layer molecules in the photo-controlled alignment layer 320 can undergo a directional reaction under the irradiation of linearly polarized exposure light of a first preset wavelength.

[0092] This embodiment provides a device 200 for manufacturing a liquid crystal film. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0093] The device 200 for making a liquid crystal film further includes an orientation buffer device 222, which is used to adjust the temperature of the second liquid crystal layer 330 to a first preset temperature, so that the second liquid crystal layer 330 is in a liquid crystal phase, and dry the second liquid crystal layer 330 to remove the solvent.

[0094] In this embodiment, the temperature of the second liquid crystal layer 330 is adjusted to a first preset temperature by the orientation buffer device 222, so that the second liquid crystal layer 330 is in a liquid crystal phase, and the second liquid crystal layer 330 is dried to remove the solvent. By increasing the temperature, the second liquid crystal molecules in the second liquid crystal layer 330 can be oriented, so that the second liquid crystal molecules can be arranged in a more orderly manner in the second liquid crystal layer 330.

[0095] Specifically, the equipment 200 for making liquid crystal film also includes a substrate conveying device, which is used to drive the substrate to move so that the substrate passes through the first application device 202, the drying device 226, the exposure device 204, the second application device 220, the orientation buffer device 222 and the curing device 224 in sequence. By setting up the substrate conveying device, the production efficiency of the liquid crystal film is improved.

[0096] This embodiment provides a device 200 for manufacturing a liquid crystal film. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0097] The light modulator is a flat plate type, and the substrate conveying device is a step-by-step operation device. During the exposure process of the light-controlled alignment layer, the light modulator and the substrate remain stationary.

[0098] In this technical solution, the light modulator is a flat plate type, and the substrate conveying device is a stepping operation device, so that the stepping operation device can drive the substrate to move. During the exposure of the light-controlled alignment layer, the light modulator and the substrate remain stationary, which can improve the stability of the exposure of the light-controlled alignment layer.

[0099] This embodiment provides a device 200 for manufacturing a liquid crystal film. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0100] The first preset wavelength ranges from 190 nm to 510 nm, and the second preset wavelength ranges from 190 nm to 510 nm.

[0101] In this technical solution, the curing device 224 includes a curing light source, which can emit light of a second preset wavelength, and the range of the second preset wavelength is 190nm to 510nm, so as to adjust the second preset wavelength. By setting the first preset wavelength to 190nm to 510nm, the second liquid crystal molecules in the second liquid crystal layer 330 undergo a cross-linking reaction.

[0102] Specifically, the first preset wavelength is 190 nm.

[0103] Specifically, the first preset wavelength is 400 nm.

[0104] Specifically, the first preset wavelength is 510 nm.

[0105] Specifically, the second preset wavelength is 190 nm.

[0106] Specifically, the second preset wavelength is 400 nm.

[0107] Specifically, the second preset wavelength is 510 nm.

[0108] This embodiment provides a device 200 for manufacturing a liquid crystal film. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0109] like Figure 3 As shown, the light modulator 208 is annular and circulates in a closed loop. The substrate conveying device is a continuously operating device. The exposure device 204 also includes a circulating device 216, which is used to drive the light modulator 208 and the substrate 310 to move synchronously along a first direction at a first speed.

[0110] In this embodiment, the light modulator 208 is annular and operates in a closed-loop manner. The substrate conveying device is a continuously operating device. The exposure device 204 also includes a circulating device 216. The circulating device 216 is used to drive the light modulator 208 and the substrate 310 to move synchronously along a first direction at a first speed, so that the multiple beams of linearly polarized light formed after passing through the light modulator 208 can be accurately irradiated into multiple areas of the photo-controlled orientation layer 320, thereby improving the stability of exposing the photo-controlled orientation layer 320, improving the accuracy of the directional reaction of the orientation layer molecules in the photo-controlled orientation layer 320, and improving the accuracy of rearranging the directions of the orientation layer molecules in multiple areas of the photo-controlled orientation layer 320.

[0111] Specifically, in Figure 3 In the figure, the arrow on the substrate 310 indicates the moving direction of the substrate 310 , and the arrow on the light modulator 208 indicates the moving direction of the light modulator 208 .

[0112] Specifically, the circulating operation device 216 includes a first guide roller 230 and a second guide roller 232. The outer wall of the first guide roller 230 contacts the substrate 310 and can drive the substrate 310 to move; the outer wall of the second guide roller 232 contacts the light modulator 208 and can drive the light modulator 208 to move.

[0113] Specifically, the device 200 for making a liquid crystal film also includes a conveying device, which is used to drive the substrate 310 to move, so that the substrate 310 can pass through the first application device 202, the exposure device 204, the second application device 220, the orientation buffer device 222 and the curing device 224 in sequence, thereby improving the convenience of making the liquid crystal film and improving the production efficiency of the liquid crystal film.

[0114] This embodiment provides a device 200 for manufacturing a liquid crystal film. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0115] like Figure 4 and Figure 5 As shown, the exposure light source 206 can emit a quasi-linear polarized light of a first preset wavelength; the light modulator 208 is located between the exposure light source 206 and the substrate 310, and is used to modulate the polarization direction of the quasi-linear polarized light.

[0116] In this embodiment, the exposure light source 206 can emit collimated linear polarized light of a first preset wavelength to improve the accuracy of the exposure light source 206 irradiating the light modulator 208. The light modulator 208 is located between the exposure light source 206 and the substrate 310 and is used to modulate the polarization direction of the collimated light.

[0117] Specifically, the optical modulator 208 modulates the polarization direction of the light passing through, and the linear polarization direction of the linear polarization light with a single polarization direction is deflected at different angles after passing through different regions of the optical modulator 208. After the incident light with a single linear polarization direction passes through different sub-regions of the spatial light modulator 208, it is converted into linear polarization light with different polarization directions. Specifically, in Figure 4 In the figure, L indicates that the exposure light is quasi-linearly polarized light.

[0118] This embodiment provides a device 200 for manufacturing a liquid crystal film. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0119] The device 200 for manufacturing a liquid crystal film further comprises a surface treatment device, which is used to clean the surface of the substrate 310 and / or adjust the surface energy.

[0120] In this embodiment, the device for manufacturing the liquid crystal film further includes a surface treatment device, which is used to clean the surface of the substrate 310 and / or adjust the surface energy. By cleaning the surface of the substrate 310, impurities on the surface of the substrate 310 can be removed, and the flatness of the surface of the substrate 310 can be improved. By adjusting the surface energy of the surface of the substrate 310, the spreadability and adhesion of the light control alignment layer 320 on the surface of the substrate 310 can be improved, ensuring that the light control alignment layer 320 can be flatly attached to the substrate 310, and improving the stability and durability of the light control alignment layer 320 after arrangement.

[0121] Specifically, along the moving direction of the substrate 310 , the surface treatment device is used to clean the surface of the substrate 310 .

[0122] Specifically, along the moving direction of the substrate 310 , the surface treatment device is used to adjust the surface energy of the surface of the substrate 310 .

[0123] Specifically, along the moving direction of the substrate 310 , the surface treatment device is used to clean the surface of the substrate 310 and adjust the surface energy.

[0124] Specifically, the first application device 202 includes a first coating device, and the first coating device is used to coat the photo-control alignment layer 320 on at least a portion of the surface of the substrate 310 .

[0125] Specifically, the first applying device 202 includes a first printing device, and the first printing device is used to print the photo-control alignment layer 320 on at least a portion of the surface of the substrate 310 .

[0126] Specifically, the first application device 202 includes a first inkjet device, and the first inkjet device is used to apply the photo-control alignment layer 320 on at least a portion of the surface of the substrate 310 by inkjet.

[0127] Specifically, the second applying device 220 includes a second coating device, and the first coating device is used to coat the liquid crystal layer 330 on at least a portion of the surface of the substrate 310 .

[0128] Specifically, the second applying device 220 includes a second printing device, and the second printing device is used to print the liquid crystal layer 330 on the surface of the photo-controlled alignment layer 320 .

[0129] Specifically, the second application device 220 includes a second inkjet device, and the second inkjet device is used to spray the liquid crystal layer 330 on the surface of the light control alignment layer 320 by inkjet.

[0130] In the claims, specification and drawings of the present invention, the term "multiple" refers to two or more than two. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, which is only for the purpose of more conveniently describing the present invention and making the description process simpler, rather than indicating or implying that the device or element referred to must have the specific orientation described, be constructed and operated in a specific orientation, so these descriptions cannot be understood as limiting the present invention; the terms "connect", "install", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection between multiple objects, or a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects, or an indirect connection between multiple objects through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood based on the specific circumstances of the above data.

[0131] In the claims, specification and drawings of the present invention, the description of the terms "one embodiment", "some embodiments", "specific embodiments" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the claims, specification and drawings of the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0132] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for manufacturing a liquid crystal film, characterized in that: include: applying a photo-alignment layer on at least a portion of the surface of the substrate; Controlling an exposure light source to irradiate the plurality of first regions of the light control alignment layer after passing through the plurality of second regions of the light modulator, wherein the exposure light source is capable of generating linearly polarized light having a first preset wavelength, the light modulator comprises a first liquid crystal layer, the arrangement directions of the first liquid crystal molecules in the first liquid crystal layer in the same second region are the same, and the arrangement directions of the first liquid crystal molecules in the first liquid crystal layer in adjacent second regions are different; Applying a second liquid crystal layer on the surface of the photo-controlled alignment layer, wherein the arrangement direction of the second liquid crystal molecules in the plurality of regions of the second liquid crystal layer is parallel or perpendicular to the arrangement direction of the alignment layer molecules in the plurality of first regions of the photo-controlled alignment layer; The light of the second preset wavelength is controlled to irradiate the second liquid crystal layer, so that the second liquid crystal molecules undergo a cross-linking and curing reaction to form the liquid crystal film.

2. The method for manufacturing a liquid crystal film according to claim 1, characterized in that: The number of the first liquid crystal layer is at least one layer, and the thickness of the first liquid crystal layer satisfies a half-wave plate condition relative to the first preset wavelength.

3. The method for manufacturing a liquid crystal film according to claim 1, characterized in that: After applying the light-controlled alignment layer on at least a portion of the surface of the substrate, the method for manufacturing the liquid crystal film further comprises: The drying device is controlled to dry the photo-controlled alignment layer to remove the solvent in the photo-controlled alignment layer.

4. The method for manufacturing a liquid crystal film according to claim 1, characterized in that: After applying a second liquid crystal layer on the surface of the photo-controlled alignment layer, wherein the arrangement direction of the second liquid crystal molecules in the plurality of regions of the second liquid crystal layer is parallel or perpendicular to the arrangement direction of the alignment layer molecules in the plurality of first regions of the photo-controlled alignment layer, the method for manufacturing the liquid crystal film further comprises: The temperature of the second liquid crystal layer is adjusted to a first preset temperature so that the second liquid crystal layer is in a liquid crystal phase, and the second liquid crystal layer is dried to remove the solvent.

5. The method for manufacturing a liquid crystal film according to claim 4, characterized in that: The first preset temperature is greater than or equal to 50° C. and less than or equal to 120° C.

6. The method for manufacturing a liquid crystal film according to any one of claims 1 to 5, characterized in that: The first preset wavelength is greater than or equal to 190 nm and less than or equal to 510 nm.

7. The method for manufacturing a liquid crystal film according to any one of claims 1 to 5, characterized in that: The second preset wavelength is greater than or equal to 190 nm and less than or equal to 510 nm.

8. The method for manufacturing a liquid crystal film according to any one of claims 1 to 5, characterized in that: The step of applying a photo-controlled alignment layer on at least a portion of the surface of the substrate comprises: Coating the photo-alignment layer on at least a portion of the surface of the substrate; or Printing the photo-alignment layer on at least a portion of the surface of the substrate; or The photo-controlled alignment layer is sprayed on at least a portion of the surface of the substrate.

9. The method for manufacturing a liquid crystal film according to any one of claims 1 to 5, characterized in that: The step of applying a second liquid crystal layer on the surface of the photo-controlled alignment layer comprises: Coating the second liquid crystal layer on the surface of the photo-alignment layer; or Printing the second liquid crystal layer on the surface of the photo-controlled alignment layer; or The second liquid crystal layer is sprayed on the surface of the light-controlled alignment layer.

10. A device for manufacturing a liquid crystal film, characterized in that: include: A first application device, used for applying a photo-controlled alignment layer on at least a portion of the surface of the substrate; An exposure device, the exposure device comprising an exposure light source and a light modulator, the exposure light source irradiating the plurality of first regions of the light control alignment layer after passing through the plurality of second regions of the light modulator, wherein the exposure light source can generate a plurality of linearly polarized lights having a first preset wavelength, the light modulator having a first liquid crystal layer, the arrangement directions of the first liquid crystal molecules in the first liquid crystal layer in the same second region are the same, and the arrangement directions of the first liquid crystal molecules in the first liquid crystal layer in adjacent second regions are different; A second applying device is used to apply a second liquid crystal layer on the surface of the photo-controlled alignment layer, wherein the arrangement direction of the second liquid crystal molecules in the multiple regions of the second liquid crystal layer is parallel or perpendicular to the arrangement direction of the alignment layer molecules in the multiple first regions of the photo-controlled alignment layer; The curing device is used to control the light of the second preset wavelength to irradiate the second liquid crystal layer, so that the second liquid crystal molecules undergo a cross-linking and curing reaction to form the liquid crystal film.

11. The device for manufacturing a liquid crystal film according to claim 10, characterized in that: Also includes: The drying device is used for drying the photo-controlled alignment layer to remove the solvent in the photo-controlled alignment layer.

12. The device for manufacturing a liquid crystal film according to claim 10, characterized in that: Also includes: The alignment buffer device is used to adjust the temperature of the second liquid crystal layer to a first preset temperature, so that the second liquid crystal layer is in a liquid crystal phase, and dry the second liquid crystal layer to remove the solvent.

13. The device for manufacturing a liquid crystal film according to any one of claims 10 to 12, characterized in that: The first preset wavelength ranges from 190 nm to 510 nm, and the second preset wavelength ranges from 190 nm to 510 nm.

Images