CN113325618A

CN113325618A - Liquid crystal lens, manufacturing method thereof and display device

Info

Publication number: CN113325618A
Application number: CN202110692131.0A
Authority: CN
Inventors: 赵承潭
Original assignee: BOE Technology Group Co Ltd
Current assignee: BOE Technology Group Co Ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2021-08-31

Abstract

The embodiment of the application provides a liquid crystal lens, a manufacturing method thereof and a display device. The liquid crystal lens includes: a first dielectric lens, one surface of which is provided with a first groove, and the surface of the first groove is provided with a first orientation layer; the packaging polarization structure is positioned on one side, provided with the first groove, of the first dielectric lens, and a second orientation layer is arranged on one side, close to the first dielectric lens, of the packaging layer; the liquid crystal molecules are positioned in a space defined by the first groove and the packaging polarization structure; the packaging polarization structure refracts polarized light at least in the photopolymerization process of the first orientation layer and the second orientation layer, so that the refracted polarized light is uniformly distributed on the surface of the first groove. This embodiment is through encapsulation polarization structure to the polarized light refraction to the irradiation intensity that makes the active orientation monomer in the liquid crystal composition receive is even, makes the thickness of forming the first orientation layer on first recess face comparatively even, is favorable to promoting liquid crystal lens's quality.

Description

Liquid crystal lens, manufacturing method thereof and display device

Technical Field

The application relates to the technical field of display, in particular to a liquid crystal lens, a manufacturing method thereof and a display device.

Background

The liquid crystal lens has the advantages of adjustable electric field, adjustable focal length, high integration degree with a display screen process and the like, so that the liquid crystal lens becomes a hot point direction of current research, and has a good application prospect in the field of 3D display. To further optimize the performance of the liquid crystal lens, the dielectric lens can be made using an imprint technique and the imprinted liquid crystal lens can be made by combining the dielectric lens with the liquid crystal lens technique. The embossed liquid crystal lens has better display quality, and can realize 2D/3D conversion.

Although the embossed liquid crystal lens has obvious technical advantages, since the surface of the dielectric lens is a curved surface, it is difficult to form an alignment layer having a uniform thickness, thereby affecting the quality of the liquid crystal lens.

Disclosure of Invention

The application provides a liquid crystal lens, a manufacturing method thereof and a display device aiming at the defects of the existing mode, and is used for solving the problem that an orientation layer with uniform thickness is difficult to form on the curved surface of a dielectric lens in the prior art.

In a first aspect, an embodiment of the present application provides a liquid crystal lens, including:

the optical lens comprises a first dielectric lens, a second dielectric lens and a third dielectric lens, wherein one surface of the first dielectric lens is provided with a first groove, and the surface of the first groove is provided with a first orientation layer;

the packaging polarization structure is positioned on one side, provided with the first groove, of the first dielectric lens, and a second orientation layer is arranged on one side, close to the first dielectric lens, of the packaging polarization structure;

liquid crystal molecules are positioned in a space defined by the first groove and the packaging polarization structure;

the first orientation layer and the second orientation layer are formed by photopolymerization of active orientation monomers, and the packaging polarization structure refracts polarized light at least in the photopolymerization process of the first orientation layer and the second orientation layer, so that the refracted polarized light is uniformly distributed on the surface of the first groove.

Optionally, the package polarization structure is a gradient refraction package layer, and the refractive indexes of the gradient refraction package layer are sequentially increased in a direction in which the center point of the first groove points to the edge; the gradient refraction encapsulation layer refracts polarized light in the photopolymerization process of the first orientation layer and the second orientation layer.

Optionally, the thickness of the gradient refraction packaging layer is 0.1um to 5um, the refractive index is 1.2 to 2.0, and the material is polymethyl methacrylate or polymer liquid crystal.

Optionally, the package polarization structure includes a conventional package layer and a second dielectric lens, and the second dielectric lens is connected to a side of the conventional package layer away from the first dielectric lens; the second dielectric lens refracts polarized light in the process of photopolymerization of the first alignment layer and the second alignment layer.

Optionally, the first dielectric lens and the second dielectric lens are identical in material and shape.

Optionally, the packaging polarization structure comprises a conventional packaging layer and a second dielectric lens, wherein the second dielectric lens is removed after the first alignment layer and the second alignment layer are polymerized; the second dielectric lens refracts polarized light in the process of photopolymerization of the first alignment layer and the second alignment layer.

Optionally, the thickness of the first alignment layer ranges from 5nm to 100 nm; the second orientation layer is a photo-polymerization second orientation layer or a composite second orientation layer, the thickness range of the photo-polymerization second orientation layer is 5 nm-100 nm, and the thickness range of the composite second orientation layer is 100 nm-200 nm.

In a second aspect, the present application provides a display device, including the liquid crystal lens described above.

In a third aspect, an embodiment of the present application provides a method for manufacturing a liquid crystal lens, including:

obtaining a first dielectric lens, wherein one surface of the first dielectric lens is provided with a first groove;

injecting self-oriented liquid crystal into the first groove and aligning and encapsulating a polarizing structure and the first medium lens, wherein the self-oriented liquid crystal comprises liquid crystal molecules and active oriented monomers;

irradiating polarized light from one side of the packaging polarization structure far away from the first dielectric lens to enable the active orientation monomer to be polymerized, so that a first orientation layer is formed on the surface of the first groove, and a second orientation layer is formed on one side of the packaging polarization structure close to the first dielectric lens;

the packaging polarization structure refracts the polarized light at least in the photopolymerization process of the first orientation layer and the second orientation layer, so that the refracted polarized light is uniformly distributed on the surface of the first groove.

Optionally, the package polarization structure is a package layer with an adjustable refractive index, and the polarized light is refracted by the package layer with an adjustable refractive index and then uniformly distributed on the first groove surface; pairing the package polarization structure with the first dielectric lens, comprising: and pairing the packaging layer with the first medium lens, wherein the refractive index of the packaging layer is adjustable.

Optionally, the package polarization structure includes a conventional package layer and a second dielectric lens, and the polarized light is refracted by the second dielectric lens and then uniformly distributed on the first groove surface; pairing the package polarization structure with the first dielectric lens, comprising: and the conventional packaging layer and the first dielectric lens are arranged in a box, and the second dielectric lens is connected to one surface of the conventional packaging layer, which is far away from the first dielectric lens.

Optionally, the package polarization structure includes a conventional package layer and a second dielectric lens, and the polarized light is refracted by the second dielectric lens and then uniformly distributed on the first groove surface; pairing the package polarization structure with the first dielectric lens, comprising: the conventional packaging layer and the first dielectric lens are arranged in a box-to-box mode, and then the second dielectric lens is arranged on one surface, far away from the first dielectric lens, of the conventional packaging layer; the manufacturing method of the liquid crystal lens further comprises the following steps: and after the photo-polymerization of the first alignment layer and the second alignment layer is completed, removing the second dielectric lens.

Optionally, obtaining a first dielectric lens comprises: and forming the first groove on the first medium material layer by a nano-imprinting technology according to preset parameters to obtain the first medium lens.

The technical scheme provided by the embodiment of the application has the following beneficial technical effects:

the liquid crystal lens, the manufacturing method thereof and the display device provided by the embodiment of the application refract polarized light at least in the photopolymerization process of the first orientation layer and the second orientation layer through the packaging polarization structure, so that the irradiation intensity of active orientation monomers in the liquid crystal composition is uniform, the thickness of the first orientation layer formed on the first groove surface is uniform, and the improvement of the quality of the liquid crystal lens is facilitated.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic representation of reactive oriented monomer photopolymerization in a prior art liquid crystal lens;

fig. 2 is a schematic structural diagram of a liquid crystal lens according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of another liquid crystal lens provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of another liquid crystal lens provided in an embodiment of the present application;

FIG. 5 is a schematic structural diagram of another liquid crystal lens according to an embodiment of the present disclosure;

fig. 6 is a schematic diagram of a frame structure of a display device according to an embodiment of the present disclosure;

fig. 7 is a schematic flowchart illustrating a method for manufacturing a liquid crystal lens according to an embodiment of the present disclosure;

FIG. 8 is a schematic process diagram of step S1 in the method for manufacturing the liquid crystal lens shown in FIG. 7;

FIG. 9 is a schematic process diagram of step S2 in the method for manufacturing the liquid crystal lens shown in FIG. 7;

FIG. 10 is a schematic process diagram of step S3 in the method for manufacturing the liquid crystal lens shown in FIG. 7;

fig. 11 is a schematic diagram illustrating a principle of a package polarization structure in a liquid crystal lens in a photo-polymerization process of an active alignment monomer according to an embodiment of the present disclosure.

Reference numerals:

1-a first dielectric lens; 101-a first groove; 10-a first alignment layer;

2-packaging the polarized light structure; 20-a first alignment layer; 2 a-a gradient refractive encapsulation layer; 2 b-packaging the polarized light structure; 21 b-conventional encapsulation layer; 22 b-a second dielectric lens; 2 c-packaging the polarized light structure; 21 c-conventional encapsulation layer; 22 c-a second dielectric lens;

3-liquid crystal molecules; 31-reactive oriented monomer.

Detailed Description

Reference will now be made in detail to the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts or parts having the same or similar functions throughout. In addition, if a detailed description of the known art is not necessary for illustrating the features of the present application, it is omitted. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

The embossed liquid crystal lens has better display quality, and can realize 2D/3D conversion. Although the embossed liquid crystal lens has obvious technical advantages, since the surface of the dielectric lens is a curved surface, it is difficult to form an alignment layer having a uniform thickness, thereby affecting the quality of the liquid crystal lens.

Specifically, as shown in fig. 1, since the dielectric lens 1 'has a groove and thus presents a curved surface, during the photo-polymerization of the active alignment monomer 31, the polarized light passes through the existing encapsulation layer 2' and irradiates the surface of the groove, and since the illumination intensity at the edge of the groove is much lower than that at the center of the groove, the thickness of the alignment layer formed on the surface of the groove is uneven, which affects the alignment of the liquid crystal molecules 3 and reduces the quality of the liquid crystal lens.

The application provides a liquid crystal lens, a manufacturing method thereof and a display device, and aims to solve the technical problems in the prior art.

An embodiment of the present application provides a liquid crystal lens, and as shown in fig. 2, the liquid crystal lens provided in the embodiment includes:

a first dielectric lens 1, one surface of which is provided with a first groove (not labeled in fig. 2), and the surface of the first groove is provided with a first orientation layer 10;

the packaging polarization structure 2 is positioned on one side, provided with the first groove 101, of the first dielectric lens 1, and a second orientation layer 20 is arranged on one side, close to the first dielectric lens 1, of the packaging polarization structure 2;

the liquid crystal molecules 3 are positioned in the space defined by the first groove 101 and the packaging polarization structure 2;

the first alignment layer 10 and the second alignment layer are formed by photopolymerization of active alignment monomers, and the packaging polarization structure 2 refracts polarized light at least in the photopolymerization process of the first alignment layer 10 and the second alignment layer 20, so that the refracted polarized light is uniformly distributed on the surface of the first groove.

It should be noted that the term "uniform" in the present application does not mean that the intensities of the polarized light on the surfaces of the first grooves are identical, but means that the magnitude of the variation in the intensities of the polarized light on the surfaces of the first grooves is small, which is advantageous for obtaining the first alignment layer 10 having a uniform thickness.

The liquid crystal lens provided by the embodiment refracts polarized light at least in the photopolymerization process of the first orientation layer 10 and the second orientation layer 20 through the packaging polarization structure 2, so that the irradiation intensity of the active orientation monomer 31 in the liquid crystal composition is uniform, the thickness of the first orientation layer 10 formed on the surface of the first groove 101 is uniform, and the improvement of the quality of the liquid crystal lens is facilitated.

Alternatively, as shown in fig. 2, in the liquid crystal lens provided in this embodiment, the thickness of the first alignment layer 10 is in a range from 5nm to 100nm, for example, in a specific embodiment, the thickness of the first alignment layer 10 is 20 nm. The second alignment layer 20 may be formed by photo-polymerization of an active alignment monomer, or may be formed by photo-polymerization of an active alignment monomer in combination with a conventional polyimide alignment technique; a second alignment layer 20 formed by photo-polymerization, i.e., the photo-polymerization second alignment layer has a thickness ranging from 5nm to 100 nm; the second alignment layer 20 formed by using a conventional polyimide alignment technique in combination with photopolymerization, i.e., the composite second alignment layer, has a thickness ranging from 100nm to 200 nm.

In addition, if the second alignment layer 20 is prepared by combining a conventional polyimide alignment technique with a photopolymerization technique, the "second alignment layer formed by photopolymerization of a reactive alignment monomer" and the "process of photopolymerization of the second alignment layer 20" in the present application refer to only the portion of the second alignment layer 20 formed by photopolymerization.

It should be noted that although the refraction effect of the package polarization structure 2 affects the illumination intensity of the surface of the package polarization structure 2 close to the first dielectric lens 1, the package polarization structure 2 can be irradiated by polarized light everywhere, and the surface of the package polarization structure 2 close to the first dielectric lens 1 is used as the light exit surface of the package polarization structure 2 after refracting the polarized light, and the illumination intensity is relatively uniform, so the thickness uniformity of the second alignment layer 20 adopting photopolymerization can meet the alignment requirement of the second alignment layer 20 in practical use. Moreover, if the second alignment layer 20 is formed by using the conventional polyimide alignment technology in cooperation with photopolymerization alignment, the alignment effect of the alignment layer obtained by using the conventional polyimide alignment technology is much higher than that of the alignment layer obtained by using the photopolymerization technology, so that the alignment effect of the second alignment layer 20 obtained by using the composite technology can also meet the alignment requirement of the second alignment layer 20 in practical use.

Optionally, as shown in fig. 3, in the liquid crystal lens provided in this embodiment, the package polarization structure 2 is a gradient refraction package layer 2a, and in a direction in which a center point of the first groove points to the edge, refractive indexes of the gradient refraction package layer 2a are sequentially increased; the gradient refractive encapsulation layer 2a refracts polarized light during photopolymerization of the first and second alignment layers 10 and 20.

Specifically, the thickness of the gradient refraction encapsulating layer 2a is 0.1-5 um, the refractive index is 1.2-2.0, and the material of the gradient refraction encapsulating layer 2a is a refractive index adjustable material such as polymethyl methacrylate (PMMA) or polymer liquid crystal. For example, in one embodiment, a polymer liquid crystal material polymerized by ultraviolet irradiation is used, and for the polymer liquid crystal material, the refractive index of the formed polymer liquid crystal material can be adjusted by adjusting the ultraviolet irradiation conditions.

In the liquid crystal lens provided by the embodiment, the gradient refraction packaging layer 2a is used as the packaging polarization structure 2, and only one component is adopted, so that the packaging and the effect of refracting the polarized light in the photopolymerization process of the orientation layer can be realized simultaneously, and the structure of the liquid crystal lens is simpler.

Optionally, as shown in fig. 4, in the liquid crystal lens provided in this embodiment, the package polarization structure 2b includes a normal package layer 21b and a second dielectric lens 22b, and the second dielectric lens 22b is disposed on a side of the normal package layer 21b away from the first dielectric lens 1; the second dielectric lens 22b refracts polarized light during photopolymerization of the first alignment layer 10 and the second alignment layer 20.

Specifically, the second dielectric lens 22b remains in the finished product of the liquid crystal lens, and the material and shape of the first dielectric lens 1 and the second dielectric lens 22b are preferably the same. In this way, the design of the parameters of the first dielectric lens 1 and the second dielectric lens 22b is facilitated, and the manufacture of the first dielectric lens 1 and the second dielectric lens 22b is facilitated in the same process.

Specifically, the second dielectric lens 22b and the conventional packaging layer 21b should be connected, for example, the second dielectric lens 22b is adhered to the side of the conventional packaging layer 21b away from the first dielectric lens 1.

In the liquid crystal lens provided by the embodiment, the package polarization structure 2b comprises a conventional package layer 21b and a second dielectric lens 22b, the conventional package layer 21 serves as a package, and the second dielectric lens 22b serves as a refraction for polarized light in the process of photopolymerization of the alignment layer.

Alternatively, as shown in fig. 5, in the liquid crystal lens provided in this embodiment, the package polarization structure 2c includes a conventional package layer 21c and a second dielectric lens 22c, and the second dielectric lens 22c is removed after the photo-polymerization of the first alignment layer 10 and the second alignment layer 20 is completed; the second dielectric lens 22c refracts polarized light during photopolymerization of the first alignment layer 10 and the second alignment layer 20.

Specifically, during the photo-polymerization of the first alignment layer 10, the second dielectric lens 22c and the conventional encapsulation layer 21c may be disposed only in contact without connection, so that the second dielectric lens 22c is removed after the photo-polymerization is completed.

In the liquid crystal lens provided by the embodiment, the package polarization structure 2c includes a conventional package layer 21c and a second dielectric lens 22c, the conventional package layer 21c plays a role of packaging, and the second dielectric lens 22c plays a role of refracting polarized light in a process of photopolymerization of the alignment layer.

Specifically, the second dielectric lens 22c is removed after the second dielectric lens 22c is photopolymerized on the first alignment layer 10 and the second alignment layer 20, so that the second dielectric lens 22c can be recycled, and the structure of the finally obtained liquid crystal lens is simple.

Specifically, the parameters of the second dielectric lens 22c are preferably the same as those of the first dielectric lens 1, and for the first dielectric lens 1, the focal length is related to the curvature radius by the following relationship:

R＝Δn×f；

camber versus radius of curvature of the first dielectric lens 1:

wherein R is the radius of curvature of the first dielectric lens 1, and h is the vault height of the first dielectric lens 1; Δ n is a refractive index difference of the first dielectric lens 1, and D is an aperture of the first dielectric lens 1.

Taking the application of the liquid crystal lens in manufacturing a 3D naked eye display device as an example, the parameters of the liquid crystal lens should be adjusted in accordance with factors such as the pixel size of the display screen and the designed viewpoint range.

Based on the same inventive concept, an embodiment of the present application further provides a display device, as shown in fig. 6, the display device includes the liquid crystal lens in the foregoing embodiment, and has the beneficial effects of the liquid crystal lens in the foregoing embodiment, which are not described herein again.

Specifically, the liquid crystal lens may be attached to a light emitting surface of the display screen, that is, the display device is a naked-eye 3D display device; the liquid crystal lens can be made into 3D glasses to be matched with a display screen to realize 3D display; liquid crystal lenses can also be used to make AR or VR display devices. The liquid crystal lens can realize adjustable focal length by adjusting the driving signal, so that a better 3D display effect is obtained, and the liquid crystal lens can also be adjusted to be in a transparent non-polarized state, so that 2D display is realized.

Based on the same inventive concept, the embodiment of the present application further provides a method for manufacturing a liquid crystal lens, as shown in fig. 7 to 10, the method for manufacturing a liquid crystal lens includes:

s1: a first dielectric lens 1 is obtained, and a first groove 101 is provided on one side of the first dielectric lens 1.

Specifically, referring to fig. 8, step S1 includes: a first groove 101 is formed on the first dielectric material layer by a nanoimprint technique according to preset parameters to obtain a first dielectric lens 1.

S2: and injecting self-oriented liquid crystal into the first groove 101, wherein the self-oriented liquid crystal comprises liquid crystal molecules 3 and active oriented monomers 31, and aligning the packaging polarization structure 2 with the first dielectric lens 1.

Specifically, referring to fig. 9, in a specific implementation, the self-aligned liquid crystal may be dropped into the first groove 101, and then the cell alignment operation may be performed; it is also possible to perform the cell alignment operation first and then inject the self-aligned liquid crystal into the first groove 101.

S3: irradiating polarized light from one side of the packaging polarizing structure 2 far away from the first dielectric lens 1 to photopolymerize the active oriented monomer 31, so as to form a first oriented layer 10 on the surface of the first groove 101 and a second oriented layer 20 on one side of the packaging polarizing structure 2 close to the first dielectric lens 1; the package polarization structure 2 refracts polarized light at least in the photopolymerization process of the first alignment layer 10 and the second alignment layer 20, so that the refracted polarized light is uniformly distributed on the surface of the first groove 101.

Specifically, referring to fig. 10, the polarized light is ultraviolet polarized light, for example, 365nm polarized ultraviolet light is used for irradiation, so that the active alignment monomer 31 undergoes a polymerization reaction under the irradiation of the light under the condition.

In the method for manufacturing the liquid crystal lens provided by this embodiment, the package polarization structure 2 refracts polarized light at least in the process of photopolymerization of the first alignment layer 10 and the second alignment layer 20, so that the irradiation intensity of the active alignment monomer 31 in the liquid crystal composition is uniform, the thickness of the first alignment layer 10 formed on the surface of the first groove 101 is uniform, and the quality of the liquid crystal lens is improved.

Optionally, referring to fig. 3 and fig. 8-10, the package polarization structure 2 is a gradient refraction package layer 2a, and the polarized light is uniformly distributed on the surface of the first groove 101 after being refracted by the gradient refraction package layer 2 a; in the method for manufacturing a liquid crystal lens provided in this embodiment, the step S2 of "putting the package polarization structure 2 and the first dielectric lens 1 into a box" includes: the gradient refraction encapsulating layer 2a and the first dielectric lens 1 are paired into a box.

Specifically, the thickness, refractive index, specific material, and the like of the gradient refraction encapsulating layer 2a can refer to the related descriptions in the above embodiments of the liquid crystal lens, and are not described herein again.

According to the manufacturing method of the liquid crystal lens, the gradient refraction packaging layer 2a is used as the packaging polarization structure 2, the operation of the box is simple, the effects of packaging and refraction of polarized light in the photopolymerization process of the orientation layer can be achieved simultaneously by only one component, and the structure of the liquid crystal lens is simpler.

Optionally, referring to fig. 4 and fig. 8-10, the package polarization structure 2b includes a conventional package layer 21b and a second dielectric lens 22b, and polarized light is refracted by the second dielectric lens 22b and then uniformly distributed on the surface of the first groove 101; in the method for manufacturing a liquid crystal lens provided in this embodiment, the step S2 of "putting the package polarization structure 2 and the first dielectric lens 1 into a box" includes: the conventional packaging layer 21b is aligned with the first dielectric lens 1, and the second dielectric lens 22b is connected to the side of the conventional packaging layer 21b away from the first dielectric lens 1.

Specifically, the second dielectric lens 22b remains in the cost of the liquid crystal lens, and therefore, the first dielectric lens 22b needs to be attached to the conventional encapsulation layer 21b, for example, by means of adhesion. In order to design the parameters of the first dielectric lens 1 and the second dielectric lens 22b and to complete the manufacturing of the first dielectric lens 1 and the second dielectric lens 2b in the same process, the materials and shapes of the first dielectric lens 1 and the second dielectric lens 22b are preferably the same.

In the method for manufacturing the liquid crystal lens, the package polarization structure 2b includes a conventional package layer 21b and a second dielectric lens 22b, the conventional package layer 21b plays a role in packaging, and the second dielectric lens 22b plays a role in refracting polarized light in a photopolymerization process of the alignment layer.

Optionally, referring to fig. 5 and fig. 8 to 10, the package polarization structure 2c includes a conventional package layer 21c and a second dielectric lens 22c, and polarized light is refracted by the second dielectric lens 22c and then uniformly distributed on the surface of the first groove 101; in the method for manufacturing a liquid crystal lens provided in this embodiment, the step S2 of "putting the package polarization structure 2 and the first dielectric lens 1 into a box" includes: the conventional packaging layer 21c and the first dielectric lens 1 are aligned, and the second dielectric lens 22c is arranged on the side of the conventional packaging layer 21c away from the first dielectric lens 1. Based on this, the method for manufacturing a liquid crystal lens provided in this embodiment further includes: after the photo-polymerization of the first alignment layer 10 and the second alignment layer 20 is completed, the second dielectric lens 22c is removed.

In the liquid crystal lens provided by this embodiment, the package polarization structure 2c includes a conventional package layer 21c and a second dielectric lens 22c, the conventional package layer 21c plays a role of packaging, and the second dielectric lens 22c plays a role of refracting polarized light in a photopolymerization process of the alignment layer; the second dielectric lens 22c is removed after the second dielectric lens 22c is photopolymerized on the first alignment layer 10 and the second alignment layer 20, so that the second dielectric lens 22c is only arranged on one surface of the conventional packaging layer 21c away from the first dielectric lens 1, and does not need to be connected with the conventional packaging layer 21 c; and the second dielectric lens 22c can be recycled, and the structure of the finally obtained liquid crystal lens is simple.

To explain the principle of the package polarization structure, the photo-polymerization process of the active alignment monomer 31 will be described below with reference to fig. 11. As shown in fig. 11, after the approximately collimated incident polarized light is refracted by the second dielectric lens 22b, it diverges into a uniform beam in the ellipsoidal direction, and after such a uniform beam passes through the conventional encapsulation layer 21b, the active alignment monomer 31 irradiated into the self-aligned liquid crystal causes the active alignment monomer 31 to undergo a polymerization reaction, thereby forming a first alignment layer with a uniform thickness on the surface of the first groove, and forming a second alignment layer on the surface of the conventional encapsulation layer 21b near the first dielectric lens 1. Because the illumination intensity received by the surface of the first groove of the first dielectric lens 1 is uniform, it can be shown that the illumination intensity received by the active orientation monomer 31 at each position in the self-orientation liquid crystal which is uniformly mixed is uniform, and therefore, the photopolymerization speed of the active orientation monomer 31 at each position is uniform, so that a first orientation layer with uniform thickness is formed on the surface of the first groove, and a second orientation layer with uniform thickness can be formed on the surface of the conventional encapsulation layer 21b close to the first dielectric lens 1.

By applying the embodiment of the application, at least the following beneficial effects can be realized:

Those of skill in the art will appreciate that the various operations, methods, steps in the processes, acts, or solutions discussed in this application can be interchanged, modified, combined, or eliminated. Further, other steps, measures, or schemes in various operations, methods, or flows that have been discussed in this application can be alternated, altered, rearranged, broken down, combined, or deleted. Further, steps, measures, schemes in the prior art having various operations, methods, procedures disclosed in the present application may also be alternated, modified, rearranged, decomposed, combined, or deleted.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.

Claims

1. A liquid crystal lens, comprising:

2. The liquid crystal lens according to claim 1, wherein the encapsulation polarization structure is a gradient refraction encapsulation layer, and the refractive indexes of the gradient refraction encapsulation layer are sequentially increased in a direction in which the center point of the first groove points to the edge;

the gradient refraction encapsulation layer refracts polarized light in the photopolymerization process of the first orientation layer and the second orientation layer.

3. The liquid crystal lens of claim 2, wherein the gradient refraction encapsulating layer has a thickness of 0.1um to 5um, a refractive index of 1.2 to 2.0, and a material of polymethyl methacrylate or polymer liquid crystal.

4. The liquid crystal lens of claim 1, wherein the encapsulating polarizer structure comprises a conventional encapsulating layer and a second dielectric lens disposed on a side of the conventional encapsulating layer remote from the first dielectric lens;

the second dielectric lens refracts polarized light in the process of photopolymerization of the first alignment layer and the second alignment layer.

5. The liquid crystal lens of claim 4, wherein the first dielectric lens and the second dielectric lens are the same in material and shape.

6. The liquid crystal lens of claim 1, wherein the encapsulating polarizer structure comprises a conventional encapsulating layer and a second dielectric lens, the second dielectric lens being removed after the photo-polymerization of the first and second alignment layers is completed;

7. The liquid crystal lens according to any one of claims 1 to 6,

the thickness range of the first orientation layer is 5 nm-100 nm;

the second orientation layer is a photo-polymerization second orientation layer or a composite second orientation layer, the thickness range of the photo-polymerization second orientation layer is 5 nm-100 nm, and the thickness range of the composite second orientation layer is 100 nm-200 nm.

8. A display device comprising the liquid crystal lens according to any one of claims 1 to 7.

9. A method for manufacturing a liquid crystal lens is characterized by comprising the following steps:

10. The method of claim 9, wherein the package polarizer is a refractive index adjustable package layer, and the polarized light is refracted by the refractive index adjustable package layer and then uniformly incident on the first groove surface;

pairing the package polarization structure with the first dielectric lens, comprising:

and pairing the packaging layer with the first medium lens, wherein the refractive index of the packaging layer is adjustable.

11. The method for manufacturing the liquid crystal lens according to claim 9, wherein the package polarization structure includes a normal package layer and a second dielectric lens, and the polarized light is refracted by the second dielectric lens and then uniformly incident on the first groove surface;

and the conventional packaging layer and the first dielectric lens are arranged in a box in a matching mode, and the second dielectric lens is connected and arranged on one surface, far away from the first dielectric lens, of the conventional packaging layer.

12. The method for manufacturing the liquid crystal lens according to claim 9, wherein the package polarization structure includes a normal package layer and a second dielectric lens, and the polarized light is refracted by the second dielectric lens and then uniformly distributed on the first groove surface;

the conventional packaging layer and the first dielectric lens are arranged in a box-to-box mode, and then the second dielectric lens is arranged on one surface, far away from the first dielectric lens, of the conventional packaging layer;

the manufacturing method of the liquid crystal lens further comprises the following steps: and after the photo-polymerization of the first alignment layer and the second alignment layer is completed, removing the second dielectric lens.

13. The method of manufacturing a liquid crystal lens according to claim 9, wherein obtaining a first dielectric lens comprises:

and forming the first groove on the first medium material layer by a nano-imprinting technology according to preset parameters to obtain the first medium lens.