Liquid crystal lens array, liquid crystal lens, liquid crystal lens module and preparation method, head-mounted display optical system and display device

Abstract

The application relates to a liquid crystal lens array, a liquid crystal lens, a liquid crystal lens module, a preparation method of the liquid crystal lens array, a preparation method of the liquid crystal lens, a preparation method of the liquid crystal lens module, a head-mounted display optical system and a display device. The liquid crystal lens array comprises a first substrate, a second substrate, a plurality of liquid crystal layers, a plurality of first conductive layers, a plurality of first insulating layers, a plurality of second conductive layers and a plurality of second insulating layers. The application has the advantages that the liquid crystal lens module can be prepared in batches through an existing liquid crystal panel process line, a single ITO glass substrate can be used to prepare multiple liquid crystal lens modules at the same time, the production cost is greatly reduced, and the production efficiency is improved; in the final forming stage, a 3D lateral bonding process is introduced to form the lead-out of the final liquid crystal electrode, so that a complex glass perforation process is avoided, and the process complexity is further simplified.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of head-mounted display devices, and particularly relates to a liquid crystal lens array, a liquid crystal lens, a liquid crystal lens module, a preparation method of the liquid crystal lens array, a preparation method of the liquid crystal lens, a preparation method of the liquid crystal lens module, a head-mounted display optical system and a display device. BACKGROUND

[0002] With the rise of AR, VR and XR, the demand for electrically adjustable lenses is generated to solve the problems such as dizziness caused by myopia and 3D stereoscopic display. Although liquid crystal lenses have been developed for many years, there is still no liquid crystal lens module that can be directly applied to AR devices, VR devices and XR devices.

[0003] Although the related liquid crystal lens module can be customized according to requirements, the customization method is complex in process and high in production cost, and cannot meet the requirements of large-scale production.

[0004] For some customized liquid crystal lens modules at present, a glass via process is generally used to realize cross-layer interconnection when stacking multiple liquid crystal lenses. However, the glass via process is relatively complex, has a low yield, poor quality and high cost.

[0005] At present, there is no effective solution to the problems such as complex process, low yield, poor quality and high cost of the multi-layer liquid crystal lens module caused by the glass via process in the related art. SUMMARY

[0006] The purpose of the present application is to solve the problems such as complex process, low yield, poor quality and high cost of the multi-layer liquid crystal lens module caused by the glass via process in the related art, and provide a liquid crystal lens array, a liquid crystal lens, a liquid crystal lens module, a preparation method of the liquid crystal lens array, a preparation method of the liquid crystal lens, a preparation method of the liquid crystal lens module, a head-mounted display optical system and a display device.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows:

[0008] In a first aspect, the present application provides a liquid crystal lens array, comprising:

[0009] a first substrate;

[0010] a second substrate opposite to the first substrate;

[0011] a plurality of liquid crystal layers, the plurality of liquid crystal layers being arranged between the first substrate and the second substrate;

[0012] a plurality of first conductive layers, the plurality of first conductive layers are arranged on a side of the first substrate close to the second substrate and are located on a first side of the corresponding liquid crystal layer respectively;

[0013] a plurality of first insulating layers, the plurality of first insulating layers are arranged on a side of the first substrate close to the second substrate and are located on a second side of the corresponding liquid crystal layer respectively;

[0014] a plurality of second conductive layers, the plurality of second conductive layers are arranged on a side of the second substrate close to the first substrate and are located on a second side of the corresponding liquid crystal layer respectively and are in contact with the corresponding first insulating layer respectively;

[0015] a plurality of second insulating layers, the plurality of second insulating layers are arranged on a side of the second substrate close to the first substrate and are located on a first side of the corresponding liquid crystal layer respectively and are in contact with the corresponding first conductive layer respectively.

[0016] In a second aspect, the present application provides a liquid crystal lens, which is cut from the liquid crystal lens array as described in the first aspect, comprising:

[0017] a third substrate, the third substrate is a part of the first substrate of the liquid crystal lens array;

[0018] a fourth substrate, the fourth substrate is opposite to the third substrate, and the fourth substrate is a part of the second substrate of the liquid crystal lens array;

[0019] a liquid crystal layer, the liquid crystal layer is arranged between the third substrate and the fourth substrate;

[0020] a first conductive layer, the first conductive layer is arranged on a side of the third substrate close to the fourth substrate and is located on a first side of the liquid crystal layer;

[0021] a first insulating layer, the first insulating layer is arranged on a side of the third substrate close to the fourth substrate and is located on a second side of the liquid crystal layer;

[0022] a second conductive layer, the second conductive layer is arranged on a side of the fourth substrate close to the third substrate and is located on a second side of the liquid crystal layer and is in contact with the first insulating layer;

[0023] a second insulating layer, the second insulating layer is arranged on a side of the fourth substrate close to the third substrate and is located on a first side of the liquid crystal layer and is in contact with the first conductive layer.

[0024] In a third aspect, the present application provides a liquid crystal lens module, comprising:

[0025] A plurality of liquid crystal lenses as claimed in the second aspect are stacked.

[0026] In a fourth aspect, the present application provides a head-mounted display optical system, comprising:

[0027] at least one liquid crystal lens as claimed in the second aspect; or

[0028] at least one liquid crystal lens module as claimed in the third aspect.

[0029] In a fifth aspect, the present application provides a head-mounted display device, comprising:

[0030] at least one liquid crystal lens as claimed in the second aspect; or

[0031] at least one liquid crystal lens module as claimed in the third aspect; or

[0032] The head-mounted display optical system as claimed in the fourth aspect.

[0033] In a sixth aspect, the present application provides a method for manufacturing a liquid crystal lens array as claimed in the first aspect, comprising:

[0034] forming a plurality of first conductive layers and a plurality of first insulating layers arranged in an array on a first substrate, wherein the plurality of first conductive layers and the plurality of first insulating layers correspond one-to-one;

[0035] forming a plurality of second conductive layers and a plurality of second insulating layers arranged in an array on a second substrate, wherein the plurality of second conductive layers and the plurality of second insulating layers correspond one-to-one;

[0036] adhering the first substrate and the second substrate so that the plurality of first conductive layers respectively contact the corresponding plurality of second insulating layers and the plurality of first insulating layers respectively contact the corresponding plurality of second conductive layers;

[0037] injecting liquid crystal between the first substrate and the second substrate to form a plurality of liquid crystal layers between the first substrate and the second substrate.

[0038] In a seventh aspect, the present application provides a method for manufacturing a liquid crystal lens as claimed in the second aspect, comprising:

[0039] forming a first conductive layer on a first side of a first substrate and a first insulating layer on a second side of the first substrate;

[0040] forming a second conductive layer on a second side of a second substrate and a second insulating layer on a first side of the second substrate;

[0041] attaching the first substrate and the second substrate to make the first conductive layer contact the second insulating layer and the first insulating layer contact the second conductive layer;

[0042] injecting liquid crystal between the first substrate and the second substrate to form a liquid crystal layer between the first substrate and the second substrate; or

[0043] cutting the liquid crystal lens array prepared by the preparation method of the first aspect or the sixth aspect to obtain a liquid crystal lens.

[0044] In an eighth aspect, the present application provides a preparation method of a liquid crystal lens module, comprising:

[0045] stacking a plurality of liquid crystal lens arrays prepared by the first aspect or the sixth aspect to form a liquid crystal lens array initial module;

[0046] cutting the liquid crystal lens array initial module to obtain a plurality of liquid crystal lens initial modules;

[0047] respectively extending the first conductive layer and the second conductive layer of the liquid crystal lens of the liquid crystal lens initial module outward to form a liquid crystal lens module.

[0048] In a ninth aspect, the present application provides a preparation method of a liquid crystal lens module, comprising:

[0049] stacking a plurality of liquid crystal lenses prepared by the second aspect or the seventh aspect to form a liquid crystal lens initial module;

[0050] respectively extending the first conductive layer and the second conductive layer of the liquid crystal lens of the liquid crystal lens initial module outward to form a liquid crystal lens module.

[0051] Compared with the related art, the liquid crystal lens array, the liquid crystal lens, the liquid crystal lens module, the preparation method of the liquid crystal lens array, the preparation method of the liquid crystal lens, the preparation method of the liquid crystal lens module, the head-mounted display optical system and the display device provided by the embodiments of the present application can batch produce the liquid crystal lens module through the existing liquid crystal panel process line, and a plurality of liquid crystal lens modules can be simultaneously prepared by using a single ITO glass substrate, which greatly reduces the production cost and improves the production efficiency; in the final forming stage, the 3D lateral bonding process is introduced to form the lead-out of the final liquid crystal electrode, thereby avoiding the complex glass perforation process and further simplifying the process complexity. BRIEF DESCRIPTION OF DRAWINGS

[0052] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0053] Figure 1 is a sectional view of a liquid crystal lens array according to an embodiment of the application;

[0054] Figure 2 is an exploded view of a liquid crystal lens array according to an embodiment of the application;

[0055] Figure 3 is a sectional view of a liquid crystal lens according to an embodiment of the application;

[0056] Figure 4 is an exploded view of a liquid crystal lens according to an embodiment of the application;

[0057] Figure 5 is a sectional view of a liquid crystal lens module according to an embodiment of the application;

[0058] Figure 6 is a schematic view of one specific embodiment of a liquid crystal lens array according to an embodiment of the application;

[0059] Figure 7 is a schematic view of one specific embodiment of a liquid crystal lens module according to an embodiment of the application;

[0060] Figure 8 is a schematic view of one specific embodiment of a liquid crystal lens module according to an embodiment of the application.

[0061] In the drawings: 1, first substrate; 2, second substrate; 3, liquid crystal layer; 4, first conductive layer; 5, first insulating layer; 6, second conductive layer; 7, second insulating layer; 8, solidified layer; 9, opening; 10, first wave plate layer; 11, second wave plate layer; 12, lens layer; 13, polarizing layer; 14, protective layer; 15, third substrate; 16, fourth substrate. DETAILED DESCRIPTION

[0062] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be described and explained below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application. Based on the embodiments provided herein, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0063] It is apparent that the accompanying drawings described below in the description are only some examples or embodiments of the present application, and for those skilled in the art, the present application can also be applied to other similar situations according to these drawings without creative labor. In addition, it can also be understood that although the efforts made in this development process can be complex and lengthy, some design, manufacture or production changes made on the basis of the technology disclosed in the present application are only routine technical means for those skilled in the art related to the disclosure of the present application, and should not be understood as insufficient disclosure of the present application.

[0064] Reference to "an embodiment" in this application means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is explicitly contemplated that embodiments described herein can be combined with other embodiments in a non- conflicting manner.

[0065] Unless otherwise defined, technical terms or scientific terms used in the present application should be understood as their common meanings to those skilled in the art. The terms "a", "an", "one", "this", and similar terms in the present application do not represent quantity limitation, but can represent singular or plural. The terms "include", "contain", "have", and any variations thereof in the present application are intended to cover non-exclusive inclusion; for example, a process, method, system, product or device including a series of steps or modules (units) is not limited to the listed steps or units, but can also include steps or units not listed, or can also include other steps or units inherent to the process, method, product or device. The terms "connect", "connect", "couple" and similar terms in the present application are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The term "multiple" in the present application means two or more. The association between the associated objects is described by the term "and / or", which means that there can be three relationships, for example, "A and / or B" can mean that A exists alone, A and B exist together, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects. The terms "first", "second", "third" and the like in the present application are only to distinguish similar objects, and do not represent a specific order for the objects.

[0066] Embodiment 1

[0067] This embodiment relates to a liquid crystal lens array and a method for manufacturing the same.

[0068] An exemplary embodiment of the present application is shown in Figures 1-2 A liquid crystal lens array, including a first substrate 1, a second substrate 2, a plurality of liquid crystal layers 3, a plurality of first conductive layers 4, a plurality of first insulating layers 5, a plurality of second conductive layers 6, and a plurality of second insulating layers 7. The second substrate 2 is opposite to the first substrate 1; the plurality of liquid crystal layers 3 are arranged between the first substrate 1 and the second substrate 2; the plurality of first conductive layers 4 are arranged on the side of the first substrate 1 close to the second substrate 2, and are respectively located on the first side of the corresponding liquid crystal layer 3; the plurality of first insulating layers 5 are arranged on the side of the first substrate 1 close to the second substrate 2, and are respectively located on the second side of the corresponding liquid crystal layer 3; the plurality of second conductive layers 6 are arranged on the side of the second substrate 2 close to the first substrate 1, and are respectively located on the second side of the corresponding liquid crystal layer 3, and are respectively in contact with the corresponding first insulating layer 5; the plurality of second insulating layers 7 are arranged on the side of the second substrate 2 close to the first substrate 1, and are respectively located on the first side of the corresponding liquid crystal layer 3, and are respectively in contact with the corresponding first conductive layer 4.

[0069] The number of liquid crystal layers 3, the number of first conductive layers 4, the number of first insulating layers 5, the number of second conductive layers 6, and the number of second insulating layers 7 are equal.

[0070] In the present application, the array is at least a 2x2 array, for example, a 3x3 array, a 4x4 array. That is, the number of liquid crystal layers 3, the number of first conductive layers 4, the number of first insulating layers 5, the number of second conductive layers 6, and the number of second insulating layers 7 are all at least 4.

[0071] In the present application, the thickness of the single-layer liquid crystal lens array is <0.6mm.

[0072] The cross section of the first substrate 1 is circular, rectangular, rounded rectangular, etc. Preferably, the first substrate 1 is circular.

[0073] The first substrate 1 is made of glass material, including but not limited to ITO conductive glass.

[0074] The cross section of the second substrate 2 is circular, rectangular, rounded rectangular, etc. Preferably, the second substrate 2 is circular.

[0075] The size of the second substrate 2 matches the size of the first substrate 1. Generally, the radial size (such as diameter, length, width) of the second substrate 2 is equal to the radial size (such as diameter, length, width) of the first substrate 1, and the axial size (such as thickness) of the second substrate 2 is equal to the axial size (such as thickness) of the first substrate 1.

[0076] The second substrate 2 is made of glass material, including but not limited to ITO conductive glass.

[0077] In some embodiments, the cross section of the liquid crystal layer 3 is circular.

[0078] The size of the liquid crystal layer 3 matches the size of the first substrate 1 (the second substrate 2). Generally, the radial dimension (e.g. diameter) of the liquid crystal layer 3 is smaller than the radial dimension (e.g. diameter, length, width) of the first substrate 1 (the second substrate 2).

[0079] The liquid crystal layer 3 is made of liquid crystal material.

[0080] In some embodiments, the cross section of the first conductive layer 4 is arc-shaped. Generally, the central angle of the first conductive layer 4 is ≤180°.

[0081] In some embodiments, the longitudinal section of the first conductive layer 4 is rectangular. Specifically, the first conductive layer 4 comprises a first lateral conductive layer. The first lateral conductive layer is disposed on the side of the first substrate 1 close to the second substrate 2, and is located on the first side of the corresponding liquid crystal layer 3 and in contact with the corresponding second insulating layer 7.

[0082] The size of the first lateral conductive layer matches the size of the first substrate 1. Generally, the radial dimension (e.g. outer diameter) of the outer edge surface of the first lateral conductive layer is smaller than the radial dimension (e.g. diameter, length, width) of the first substrate 1.

[0083] The size of the first lateral conductive layer matches the size of the liquid crystal layer 3. Generally, the radial dimension (e.g. inner diameter) of the inner edge surface of the first lateral conductive layer is not less than the radial dimension (e.g. diameter) of the liquid crystal layer 3, and the axial dimension (e.g. thickness) of the first lateral conductive layer is smaller than the axial dimension (e.g. thickness) of the liquid crystal layer 3.

[0084] The first conductive layer 4 is made of conductive material, including but not limited to silver paste, copper, aluminum, etc.

[0085] In some embodiments, the cross section of the first insulating layer 5 is arc-shaped. Generally, the central angle of the first insulating layer 5 is ≤180°.

[0086] In some embodiments, the central angle of the first insulating layer 5 is equal to the central angle of the first conductive layer 4.

[0087] The size of the first insulating layer 5 matches the size of the first substrate 1. Generally, the radial dimension (e.g. outer diameter) of the outer edge surface of the first insulating layer 5 is smaller than the radial dimension (e.g. diameter, length, width) of the first substrate 1.

[0088] The size of the first insulating layer 5 matches the size of the liquid crystal layer 3. Generally, the radial dimension (e.g. inner diameter) of the inner edge surface of the first insulating layer 5 is not less than the radial dimension (e.g. diameter) of the liquid crystal layer 3, and the axial dimension (e.g. thickness) of the first insulating layer 5 is not greater than the axial dimension (e.g. thickness) of the liquid crystal layer 3.

[0089] The size of the first insulating layer 5 matches the size of the first conductive layer 4. Generally, the radial size (e.g. inner diameter, outer diameter) of the first insulating layer 5 is equal to the radial size (e.g. inner diameter, outer diameter) of the first conductive layer 4, the axial size (e.g. thickness) of the first insulating layer 5 is equal to the axial size (e.g. thickness) of the first conductive layer 4, and the circumferential size (e.g. arc length, length) of the first insulating layer 5 is equal to the circumferential size (e.g. arc length, length) of the first conductive layer 4.

[0090] The first insulating layer 5 is made of insulating material, including but not limited to resin, quartz, ceramic, etc.

[0091] The relationship between the first insulating layer 5 and the first conductive layer 4 includes the following ways:

[0092] 1) The first end of the first insulating layer 5 is not in contact with the first end of the first conductive layer 4, and the second end of the first insulating layer 5 is not in contact with the second end of the first conductive layer 4;

[0093] 2) The first end of the first insulating layer 5 is in contact with the first end of the first conductive layer 4, and the second end of the first insulating layer 5 is not in contact with the second end of the first conductive layer 4;

[0094] 3) The first end of the first insulating layer 5 is not in contact with the first end of the first conductive layer 4, and the second end of the first insulating layer 5 is in contact with the second end of the first conductive layer 4;

[0095] 4) The first end of the first insulating layer 5 is in contact with the first end of the first conductive layer 4, and the second end of the first insulating layer 5 is in contact with the second end of the first conductive layer 4.

[0096] In some embodiments, the cross section of the second conductive layer 6 is arc-shaped. Generally, the central angle of the second conductive layer 6 is ≤180°.

[0097] In some embodiments, the central angle of the second conductive layer 6 is equal to the central angle of the first insulating layer 5.

[0098] In some embodiments, the end faces of the two ends of the second conductive layer 6 are coplanar with the end faces of the two ends of the first insulating layer 5, respectively.

[0099] In some embodiments, the longitudinal section of the second conductive layer 6 is rectangular. Specifically, the second conductive layer 6 includes a second lateral conductive layer. The second lateral conductive layer is arranged on the side of the second substrate 2 close to the first substrate 1, and is located on the second side of the corresponding liquid crystal layer 3 and in contact with the corresponding first insulating layer 5.

[0100] The size of the second conductive layer matches the size of the second substrate 2. Generally, the radial dimension (e.g. outer diameter) of the outer edge surface of the second conductive layer is smaller than the radial dimension (e.g. diameter, length, width) of the second substrate 2.

[0101] The size of the second conductive layer matches the size of the liquid crystal layer 3. Generally, the radial dimension (e.g. inner diameter) of the inner edge surface of the second conductive layer is not smaller than the radial dimension (e.g. diameter) of the liquid crystal layer 3, and the axial dimension (e.g. thickness) of the second conductive layer is smaller than the axial dimension (e.g. thickness) of the liquid crystal layer 3.

[0102] The size of the second conductive layer matches the size of the first insulating layer 5. Generally, the radial dimension (e.g. inner diameter, outer diameter) of the second conductive layer is equal to the radial dimension (e.g. inner diameter, outer diameter) of the first insulating layer 5, the axial dimension (e.g. thickness) of the second conductive layer is equal to the axial dimension (e.g. thickness) of the first insulating layer 5, and the circumferential dimension (e.g. arc length, length) of the second conductive layer is equal to the circumferential dimension (e.g. arc length, length) of the first insulating layer 5.

[0103] Generally, the sum of the axial dimension of the second conductive layer and the axial dimension of the first insulating layer 5 is equal to the axial dimension of the liquid crystal layer 3.

[0104] The second conductive layer 6 is made of conductive material, including but not limited to silver paste, copper, aluminum, etc.

[0105] In some embodiments, the cross section of the second insulating layer 7 is arc-shaped. Generally, the central angle of the second insulating layer 7 is ≤180°.

[0106] In some embodiments, the central angle of the second insulating layer 7 is equal to the central angle of the second conductive layer 6.

[0107] In some embodiments, the central angle of the second insulating layer 7 is equal to the central angle of the first conductive layer 4.

[0108] In some embodiments, the end surface of each end of the second insulating layer 7 is coplanar with the end surface of each end of the first conductive layer 4.

[0109] The size of the second insulating layer 7 matches the size of the second substrate 2. Generally, the radial dimension (e.g. outer diameter) of the outer edge surface of the second insulating layer 7 is smaller than the radial dimension (e.g. diameter, length, width) of the second substrate 2.

[0110] The size of the second insulating layer 7 matches the size of the liquid crystal layer 3. Generally, the radial dimension (e.g. inner diameter) of the inner edge surface of the second insulating layer 7 is not smaller than the radial dimension (e.g. diameter) of the liquid crystal layer 3, and the axial dimension (e.g. thickness) of the second insulating layer 7 is not larger than the axial dimension (e.g. thickness) of the liquid crystal layer 3.

[0111] The size of the second insulating layer 7 matches the size of the second conductive layer 6. Generally, the radial size (such as the inner diameter, the outer diameter) of the second insulating layer 7 is equal to the radial size (such as the inner diameter, the outer diameter) of the second transverse conductive layer, the axial size (such as the thickness) of the second insulating layer 7 is equal to the axial size (such as the thickness) of the second transverse conductive layer, and the circumferential size (such as the arc length, the length) of the second insulating layer 7 is not greater than the circumferential size (such as the arc length, the length) of the second transverse conductive layer.

[0112] The size of the second insulating layer 7 matches the size of the first conductive layer 4. Generally, the radial size (such as the inner diameter, the outer diameter) of the second insulating layer 7 is equal to the radial size (such as the inner diameter, the outer diameter) of the first transverse conductive layer, the axial size (such as the thickness) of the second insulating layer 7 is equal to the axial size (such as the thickness) of the first transverse conductive layer, and the circumferential size (such as the arc length, the length) of the second insulating layer 7 is equal to the circumferential size (such as the arc length, the length) of the first transverse conductive layer.

[0113] Generally, the sum of the axial size of the second insulating layer 7 and the axial size of the first transverse conductive layer is equal to the axial size of the liquid crystal layer 3.

[0114] The second insulating layer 7 is made of insulating materials, including but not limited to resin, quartz, ceramic, etc.

[0115] The relationship between the second insulating layer 7 and the second conductive layer 6 includes the following ways:

[0116] 1) The first end of the second insulating layer 7 does not contact the first end of the second conductive layer 6, and the second end of the second insulating layer 7 does not contact the second end of the second conductive layer 6;

[0117] 2) The first end of the second insulating layer 7 contacts the first end of the second conductive layer 6, and the second end of the second insulating layer 7 does not contact the second end of the second conductive layer 6;

[0118] 3) The first end of the second insulating layer 7 does not contact the first end of the second conductive layer 6, and the second end of the second insulating layer 7 contacts the second end of the second conductive layer 6;

[0119] 4) The first end of the second insulating layer 7 contacts the first end of the second conductive layer 6, and the second end of the second insulating layer 7 contacts the second end of the second conductive layer 6.

[0120] Further, the liquid crystal lens array further comprises a plurality of curing layers 8 and a plurality of openings 9. Among them, the plurality of curing layers 8 are arranged between the first substrate 1 and the second substrate 2, the inside of each curing layer 8 is provided with a corresponding liquid crystal layer 3, the outside of each curing layer 8 is provided with a corresponding first conductive layer 4, a corresponding first insulating layer 5, a corresponding second conductive layer 6, and a corresponding second insulating layer 7; the plurality of openings 9 are respectively arranged in the corresponding curing layer 8, for the liquid crystal to flow into the inside of the curing layer 8.

[0121] The number of the cured layers 8 is equal to the number of the liquid crystal layers 3.

[0122] The cross section of the cured layer 8 is circular.

[0123] The size of the cured layer 8 matches the size of the first substrate 1 (the second substrate 2). Generally, the radial dimension (such as the outer diameter) of the outer edge surface of the cured layer 8 is less than the radial dimension (such as the diameter, length, width) of the first substrate 1 (the second substrate 2).

[0124] The size of the cured layer 8 matches the size of the liquid crystal layer 3. Generally, the radial dimension (such as the inner diameter) of the inner edge surface of the cured layer 8 is equal to the radial dimension (such as the diameter) of the liquid crystal layer 3, and the axial dimension (such as the thickness) of the cured layer 8 is equal to the axial dimension (such as the thickness) of the liquid crystal layer 3.

[0125] The size of the cured layer 8 matches the size of the first conductive layer 4 (the first insulating layer 5, the second conductive layer 6, the second insulating layer 7). Generally, the radial dimension (such as the outer diameter) of the outer edge surface of the cured layer 8 is equal to the radial dimension (such as the inner diameter) of the inner edge surface of the first conductive layer 4 (the first insulating layer 5, the second conductive layer 6, the second insulating layer 7), and the axial dimension (such as the thickness) of the cured layer 8 is not less than the axial dimension (such as the thickness) of the first conductive layer 4 (the first insulating layer 5, the second conductive layer 6, the second insulating layer 7).

[0126] The cured layer 8 is made of a cured material, including but not limited to a photocured material, such as ultraviolet light cured material (such as UV glue).

[0127] The number of the openings 9 matches the number of the cured layers 8. Generally, the number of the openings 9 is an integer multiple of the number of the cured layers 8. That is, at least one opening 9 is provided for each cured layer 8.

[0128] The opening 9 is located between the non-contacting ends of the first conductive layer 4 and the first insulating layer 5 (the non-contacting ends of the second conductive layer 6 and the second insulating layer 7). Specifically as follows:

[0129] 1) One end of the first conductive layer 4 and one end of the first insulating layer 5 are not in contact (the other end of the first conductive layer 4 and the other end of the first insulating layer 5 are in contact), forming a first cavity, and the opening 9 is provided at the position of the first cavity;

[0130] 2) The first end of the first conductive layer 4 and the first end of the first insulating layer 5 are not in contact and form a first cavity, and the second end of the first conductive layer 4 and the second end of the first insulating layer 5 are not in contact and form a second cavity, and the opening 9 is provided at the position of the first cavity and / or the position of the second cavity.

[0131] Generally, at least one opening 9 is arranged at the position of the first cavity, and at least one opening 9 is arranged at the position of the second cavity.

[0132] Preferably, one opening 9 is arranged at the position of the first cavity, and one opening 9 is arranged at the position of the second cavity.

[0133] The size of the opening 9 matches the size of the solidified layer 8. Generally, the radial dimension (such as inner diameter, outer diameter) of the opening 9 is equal to the radial dimension of the solidified layer 8, and the axial dimension (such as thickness) of the opening 9 is not greater than the axial dimension (such as thickness) of the solidified layer 8.

[0134] Further, the liquid crystal lens array further comprises a first wave plate layer 10, a second wave plate layer 11 and a lens layer 12, the first wave plate layer 10 is arranged on the side of the first substrate 1 away from the second substrate 2; the second wave plate layer 11 is arranged on the side of the second substrate 2 away from the first substrate 1; the lens layer 12 is arranged on the side of the first wave plate layer 10 away from the first substrate 1 or on the side of the second wave plate layer 11 away from the second substrate 2.

[0135] For the first wave plate layer 10, the second wave plate layer 11 and the lens layer 12, there are the following embodiments:

[0136] 1) The first wave plate layer 10, the second wave plate layer 11 and the lens layer 12 are one;

[0137] 2) The first wave plate layer 10, the second wave plate layer 11 and the lens layer 12 are several, and the number of each is equal to the number of the liquid crystal layer 3;

[0138] 3) The first wave plate layer 10 and the second wave plate layer 11 are one, and the lens layer 12 is several, and the number of the lens layer 12 is equal to the number of the liquid crystal layer 3;

[0139] 4) The first wave plate layer 10 and the second wave plate layer 11 are several, and the lens layer 12 is one, and the number of the first wave plate layer 10 and the second wave plate layer 11 is equal to the number of the liquid crystal layer 3.

[0140] In addition, other combinations of the first wave plate layer 10, the second wave plate layer 11 and the lens layer 12 are not described here.

[0141] The cross section of the first wave plate layer 10 is circular, rectangular, rounded rectangular, etc. Preferably, the cross section of the first wave plate layer 10 is circular.

[0142] In the case of one first wave plate layer 10, the radial dimension (such as diameter) of the first wave plate layer 10 is not greater than the radial dimension (such as diameter, length, width) of the first substrate 1; in the case of several first wave plate layers 10, the radial dimension (such as diameter) of the first wave plate layer 10 is not greater than the radial dimension (such as diameter) of the liquid crystal layer 3.

[0143] In some embodiments, the first wave plate layer 10 includes, but is not limited to, a wave plate film.

[0144] The cross section of the second wave plate layer 11 is circular, rectangular, rounded rectangular, etc. Preferably, the cross section of the second wave plate layer 11 is circular.

[0145] In the case of one second wave plate layer 11, the radial dimension (such as diameter) of the second wave plate layer 11 is not greater than the radial dimension (such as diameter, length, width) of the second substrate 2; in the case of several second wave plate layers 11, the radial dimension (such as diameter) of the second wave plate layer 11 is not greater than the radial dimension (such as diameter) of the liquid crystal layer 3.

[0146] The size of the second wave plate layer 11 matches the size of the first wave plate layer 10. Generally, the radial dimension (such as diameter) of the second wave plate layer 11 is equal to the radial dimension (such as diameter, length, width) of the first wave plate layer 10, and the axial dimension (such as thickness) of the second wave plate layer 11 is equal to the axial dimension (such as thickness) of the first wave plate layer 10.

[0147] In some embodiments, the second wave plate layer 11 includes, but is not limited to, a wave plate film.

[0148] The cross section of the lens layer 12 is circular, rectangular, rounded rectangular, etc. Preferably, the cross section of the lens layer 12 is circular.

[0149] The size of the lens layer 12 matches the size of the first wave plate layer 10 (second wave plate layer 11). Generally, the radial dimension (such as diameter) of the lens layer 12 is not less than the radial dimension (such as diameter) of the first wave plate layer 10 (second wave plate layer 11).

[0150] In some embodiments, the lens layer 12 includes, but is not limited to, a PB liquid crystal lens sheet.

[0151] In the present application, if the first wave plate layer 10 and the second wave plate layer 11 are selected as compact wave plate films, the thickness of the single-layer liquid crystal lens array is <0.5 mm.

[0152] Further, the liquid crystal lens array further includes a polarizing layer 13. Among them, the polarizing layer 13 is arranged on the side of the lens layer 12 away from the first wave plate layer 10 or the second wave plate layer 11.

[0153] Generally, in the case of stacking of multiple liquid crystal lens arrays, the liquid crystal lens array located at the outermost side of the stacking structure is provided with a polarizing layer 13, and the remaining liquid crystal lens arrays are without a polarizing layer 13. That is, there is only one polarizing layer 13.

[0154] In addition, if the incident light of the use scenario is a polarized light meeting the condition, the polarizing layer 13 does not need to be arranged.

[0155] The cross section of the polarization layer 13 is circular, rectangular, rounded rectangular, etc. Preferably, the cross section of the polarization layer 13 is circular.

[0156] The size of the polarization layer 13 matches the size of the lens layer 12. Generally, the radial dimension (such as diameter) of the polarization layer 13 is not less than the radial dimension (such as diameter) of the lens layer 12.

[0157] In some embodiments, the polarization layer 13 includes but is not limited to a polarized film.

[0158] Further, the liquid crystal lens array further includes a protective layer 14. The protective layer 14 is arranged on the side of the lens layer 12 away from the first wave plate layer 10 or the second wave plate layer 11.

[0159] Generally, in the case of a plurality of liquid crystal lens array stacks, the liquid crystal lens array located at the outermost side of the stack structure is provided with a protective layer 14, and the remaining liquid crystal lens arrays are not provided with a protective layer 14. That is, the protective layer 14 is only one.

[0160] In the case where the liquid crystal lens array includes a polarization layer 13, the protective layer 14 is arranged on the side of the polarization layer 13 away from the lens layer 12.

[0161] The cross section of the protective layer 14 is circular, rectangular, rounded rectangular, etc. Preferably, the cross section of the protective layer 14 is circular.

[0162] The size of the protective layer 14 matches the size of the lens layer 12. Generally, the radial dimension (such as diameter) of the protective layer 14 is not less than the radial dimension (such as diameter) of the lens layer 12.

[0163] The size of the protective layer 14 matches the size of the polarization layer 13. Generally, the radial dimension (such as diameter) of the protective layer 14 is not less than the radial dimension (such as diameter) of the polarization layer 13.

[0164] In some embodiments, the protective layer 14 includes but is not limited to a protective film.

[0165] For the liquid crystal lens array as described above, the preparation method is as follows:

[0166] Step S102, forming a plurality of first conductive layers 4 and a plurality of first insulating layers 5 arranged in an array on the first substrate 1, wherein the plurality of first conductive layers 4 and the plurality of first insulating layers 5 correspond one by one;

[0167] Step S104, forming a plurality of second conductive layers 6 and a plurality of second insulating layers 7 arranged in an array on the second substrate 2, wherein the plurality of second conductive layers 6 and the plurality of second insulating layers 7 correspond one by one;

[0168] Step S106, adhere the first substrate 1 and the second substrate 2, so that the first conductive layers 4 respectively contact the corresponding second insulating layers 7, and the first insulating layers 5 respectively contact the corresponding second conductive layers 6.

[0169] Step S108, inject liquid crystal between the first substrate 1 and the second substrate 2, to form the liquid crystal layers 3 between the first substrate 1 and the second substrate 2.

[0170] Wherein, the step S102 and the step S104 are parallel steps.

[0171] Further, one more specific embodiment of the preparation method is as follows:

[0172] Step S202, form the to-be-cured layers with at least one opening 9 arranged in an array on the first substrate 1;

[0173] Step S204, form the first conductive layers 4 on the first side of each to-be-cured layer, and form the second conductive layers 6 on the second side of each to-be-cured layer;

[0174] Step S206, form the second conductive layers 6 and the second insulating layers 7 arranged in an array on the second substrate 2, wherein the second conductive layers 6 and the second insulating layers 7 correspond one by one;

[0175] Step S208, adhere the first substrate 1 and the second substrate 2, so that the first conductive layers 4 respectively contact the corresponding second insulating layers 7, and the first insulating layers 5 respectively contact the corresponding second conductive layers 6;

[0176] Step S210, cure the to-be-cured layers to form the cured layers 8;

[0177] Step S212, inject liquid crystal through the openings 9 into the inside of the corresponding cured layers 8 respectively, to form the liquid crystal layers 3.

[0178] Wherein, the steps S204 to S208 are basically the same as the steps S102 to S106, and the step S212 is basically the same as the step S108.

[0179] Wherein, the steps S202 to S204 and the step S206 are parallel steps.

[0180] Further, one more specific embodiment of the preparation method is as follows:

[0181] Step S302, form the to-be-cured layers with at least one opening 9 arranged in an array on the second substrate 2;

[0182] Step S304, forming a second conductive layer 6 on the second side of each layer to be solidified, and forming a first insulating layer 5 on the first side of each layer to be solidified;

[0183] Step S306, forming a plurality of first conductive layers 4 and a plurality of first insulating layers 5 arranged in an array on the first substrate 1, wherein the plurality of first conductive layers 4 correspond to the plurality of first insulating layers 5 one by one;

[0184] Step S308, bonding the first substrate 1 and the second substrate 2 so that the plurality of first conductive layers 4 respectively contact the corresponding plurality of second insulating layers 7, and the plurality of first insulating layers 5 respectively contact the corresponding plurality of second conductive layers 6;

[0185] Step S310, solidifying the plurality of layers to be solidified to form a plurality of solidified layers 8;

[0186] Step S312, injecting liquid crystal into the inside of the corresponding solidified layer 8 through the plurality of openings 9 to form a liquid crystal layer 3.

[0187] Among them, steps S304-S308 are basically the same as steps S102-S106, and step S312 is basically the same as step S108.

[0188] Among them, steps S302-S304 and step S306 are parallel steps.

[0189] Further, the preparation method further comprises:

[0190] Step S110, forming a first wave plate layer 10 on the side of the first substrate 1 away from the second substrate 2;

[0191] Step S112, forming a second wave plate layer 11 on the side of the second substrate 2 away from the first substrate 1;

[0192] Step S114a, forming a lens layer 12 on the side of the first wave plate layer 10 away from the first substrate 1;

[0193] Step S114b, forming a lens layer 12 on the side of the second wave plate layer 11 away from the second substrate 2.

[0194] Among them, steps S110 and S112 are parallel steps.

[0195] Among them, steps S114a and S114b are mutually exclusive steps, that is, only one of steps S114a and S114b can be executed.

[0196] Among them, for steps S110-S112, they can be performed before step S102 or after step S108.

[0197] The technical effects of the present application are as follows: the single large-size first substrate and the second substrate can be used to batch produce the liquid crystal lens, reduce the process complexity, ensure the preparation quality, and reduce the production cost.

[0198] Embodiment 2

[0199] This embodiment relates to the liquid crystal lens and the preparation method thereof.

[0200] An exemplary embodiment of the present application is shown in Figures 3-4 A liquid crystal lens includes a third substrate 15, a fourth substrate 16, a liquid crystal layer 3, a first conductive layer 4, a first insulating layer 5, a second conductive layer 6, and a second insulating layer 7. The third substrate 15 is part of the first substrate 1 of the liquid crystal lens array; the fourth substrate 16 is opposite to the third substrate 15, and the fourth substrate 16 is part of the second substrate 2 of the liquid crystal lens array; the liquid crystal layer 3 is arranged between the third substrate 15 and the fourth substrate 16; the first conductive layer 4 is arranged on the side of the third substrate 15 close to the fourth substrate 16 and on the first side of the liquid crystal layer 3; the first insulating layer 5 is arranged on the side of the third substrate 15 close to the fourth substrate 16 and on the second side of the liquid crystal layer 3; the second conductive layer 6 is arranged on the side of the fourth substrate 16 close to the third substrate 15 and on the second side of the liquid crystal layer 3, and contacts the first insulating layer 5; and the second insulating layer 7 is arranged on the side of the fourth substrate 16 close to the third substrate 15 and on the first side of the liquid crystal layer 3, and contacts the first conductive layer 4.

[0201] For the liquid crystal lens of the present application, two different focal lengths can be achieved according to the voltage state.

[0202] In this embodiment, the structure of the liquid crystal layer 3, the first insulating layer 5, and the second insulating layer 7 is basically the same as that of Embodiment 1, and will not be described here.

[0203] In the present application, the thickness of the single-layer liquid crystal lens is <0.6 mm.

[0204] The cross section of the third substrate 15 is circular, rectangular, or rounded rectangular. Preferably, the third substrate 15 is circular.

[0205] The third substrate 15 is made of a glass material, including but not limited to ITO conductive glass.

[0206] The cross section of the fourth substrate 16 is circular, rectangular, or rounded rectangular. Preferably, the fourth substrate 16 is circular.

[0207] The fourth substrate 16 has a size matching that of the third substrate 15. Generally, the fourth substrate 16 has a radial dimension (e.g. diameter, length, width) equal to that of the third substrate 15, and an axial dimension (e.g. thickness) equal to that of the third substrate 15.

[0208] The fourth substrate 16 is made of a glass material, including but not limited to ITO conductive glass.

[0209] In some embodiments, the first conductive layer 4 has a longitudinal cross-section in the shape of a rectangle. The structure of the first conductive layer 4 is substantially the same as that of the first conductive layer 4 of Embodiment 1.

[0210] In some embodiments, the first conductive layer 4 has a longitudinal cross-section in the shape of a T or L. Specifically, the first conductive layer 4 includes a first lateral conductive layer and a first longitudinal conductive layer. The first lateral conductive layer is disposed on the side of the third substrate 15 close to the fourth substrate 16, and is located on the first side of the liquid crystal layer 3 and in contact with the second insulating layer 7. The first longitudinal conductive layer is disposed on the end of the first lateral conductive layer away from the liquid crystal layer 3, and is in contact with the outer edge surface of the third substrate 15 or the fourth substrate 16.

[0211] The first lateral conductive layer has a size matching that of the third substrate 15. Generally, the first lateral conductive layer has a radial dimension (e.g. outer diameter) equal to that of the third substrate 15 (e.g. diameter, length, width).

[0212] The first lateral conductive layer has a size matching that of the liquid crystal layer 3. Generally, the first lateral conductive layer has a radial dimension (e.g. inner diameter) equal to that of the liquid crystal layer 3 (e.g. diameter), and an axial dimension (e.g. thickness) not greater than that of the liquid crystal layer 3 (e.g. thickness).

[0213] The first longitudinal conductive layer has a size matching that of the third substrate 15 (or the fourth substrate 16). Generally, the first longitudinal conductive layer has a radial dimension (e.g. inner diameter) equal to that of the third substrate 15 (or the fourth substrate 16) (e.g. diameter, length, width).

[0214] The first longitudinal conductive layer has a size matching that of the first lateral conductive layer. Generally, the first longitudinal conductive layer has a radial dimension (e.g. inner diameter) equal to that of the first lateral conductive layer (e.g. outer diameter), an axial dimension (e.g. thickness) greater than that of the first lateral conductive layer (e.g. thickness), and a circumferential dimension (e.g. arc length, length) equal to that of the first lateral conductive layer (e.g. arc length, length).

[0215] In some embodiments, the longitudinal cross section of the second conductive layer 6 is rectangular. The structure of the second conductive layer 6 is substantially the same as that of the second conductive layer 6 of Embodiment 1.

[0216] In some embodiments, the longitudinal cross section of the second conductive layer 6 is T-shaped or L-shaped. Specifically, the second conductive layer 6 comprises a second lateral conductive layer and a second longitudinal conductive layer. The second lateral conductive layer is arranged on the side of the fourth substrate 16 close to the third substrate 15, and is located on the second side of the liquid crystal layer 3 and in contact with the first insulating layer 5. The second longitudinal conductive layer is arranged on the end of the second lateral conductive layer away from the liquid crystal layer 3, and is in contact with the outer edge surface of the third substrate 15 or the fourth substrate 16.

[0217] The size of the second lateral conductive layer matches the size of the fourth substrate 16. Generally, the radial dimension (such as the outer diameter) of the outer edge surface of the second lateral conductive layer is equal to the radial dimension (such as the diameter, length, or width) of the fourth substrate 16.

[0218] The size of the second lateral conductive layer matches the size of the liquid crystal layer 3. Generally, the radial dimension (such as the inner diameter) of the inner edge surface of the second lateral conductive layer is equal to the radial dimension (such as the diameter) of the liquid crystal layer 3, and the axial dimension (such as the thickness) of the second lateral conductive layer is not greater than the axial dimension (such as the thickness) of the liquid crystal layer 3.

[0219] The size of the second lateral conductive layer matches the size of the first insulating layer 5. Generally, the radial dimension (such as the inner diameter or outer diameter) of the second lateral conductive layer is equal to the radial dimension (such as the inner diameter or outer diameter) of the first insulating layer 5, the axial dimension (such as the thickness) of the second lateral conductive layer is equal to the axial dimension (such as the thickness) of the first insulating layer 5, and the circumferential dimension (such as the arc length or length) of the second lateral conductive layer is not less than the circumferential dimension (such as the arc length or length) of the first insulating layer 5.

[0220] Generally, the sum of the axial dimensions of the second lateral conductive layer and the first insulating layer 5 is equal to the axial dimension of the liquid crystal layer 3.

[0221] The size of the second longitudinal conductive layer matches the size of the third substrate 15 (or the fourth substrate 16). Generally, the radial dimension (such as the inner diameter) of the inner edge surface of the second longitudinal conductive layer is equal to the radial dimension (such as the diameter, length, or width) of the third substrate 15 (or the fourth substrate 16).

[0222] The size of the second longitudinal conductive layer matches the size of the second lateral conductive layer. Generally, the radial dimension (such as the inner diameter) of the inner edge surface of the second longitudinal conductive layer is equal to the radial dimension (such as the outer diameter) of the outer edge surface of the second lateral conductive layer, the axial dimension (such as the thickness) of the second longitudinal conductive layer is greater than the axial dimension (such as the thickness) of the second lateral conductive layer, and the circumferential dimension (such as the arc length or length) of the second longitudinal conductive layer is equal to the circumferential dimension (such as the arc length or length) of the second lateral conductive layer.

[0223] Further, the liquid crystal lens further comprises a cured layer 8 and at least one opening 9. The cured layer 8 is arranged between the third substrate 15 and the fourth substrate 16, the inside of the cured layer 8 is provided with the liquid crystal layer 3, and the outside of the cured layer 8 is provided with the first conductive layer 4, the first insulating layer 5, the second conductive layer 6 and the second insulating layer 7. The opening 9 is arranged on the cured layer 8, and is used for allowing the liquid crystal to flow into the inside of the cured layer 8.

[0224] In the embodiment, the structure of the cured layer 8 and the opening 9 is basically the same as that of the embodiment 1, and will not be described here again.

[0225] Further, the liquid crystal lens further comprises a first wave plate layer 10, a second wave plate layer 11 and a lens layer 12. The first wave plate layer 10 is arranged on the side of the third substrate 15 away from the fourth substrate 16. The second wave plate layer 11 is arranged on the side of the fourth substrate 16 away from the third substrate 15. The lens layer 12 is arranged on the side of the first wave plate layer 10 away from the third substrate 15 or on the side of the second wave plate layer 11 away from the fourth substrate 16.

[0226] In the embodiment, the structure of the first wave plate layer 10, the second wave plate layer 11 and the lens layer 12 is basically the same as that of the embodiment 1, and will not be described here again.

[0227] In addition, in the embodiment:

[0228] The size of the first wave plate layer 10 matches the size of the liquid crystal layer 3. Generally, the radial size (such as diameter) of the first wave plate layer 10 is not greater than the radial size (such as diameter, length, width) of the liquid crystal layer 3.

[0229] The size of the second wave plate layer 11 matches the size of the liquid crystal layer 3. Generally, the radial size (such as diameter) of the second wave plate layer 11 is not greater than the radial size (such as diameter, length, width) of the liquid crystal layer 3.

[0230] In the present application, when the first wave plate layer 10 and the second wave plate layer 11 are compact wave plate films, the thickness of the single-layer liquid crystal lens is less than 0.5 mm.

[0231] Further, the liquid crystal lens further comprises a polarizing layer 13. The polarizing layer 13 is arranged on the side of the lens layer 12 away from the first wave plate layer 10 or the second wave plate layer 11.

[0232] In the embodiment, the structure of the polarizing layer 13 is basically the same as that of the embodiment 1, and will not be described here again.

[0233] Further, the liquid crystal lens further comprises a protective layer 14. The protective layer 14 is arranged on the side of the lens layer 12 away from the first wave plate layer 10 or the second wave plate layer 11.

[0234] In the present embodiment, the structure of the protective layer 14 is substantially the same as that of Embodiment 1, and thus will not be described again.

[0235] For the liquid crystal lens as described above, a method for manufacturing the same is as follows.

[0236] Step S402, forming the first conductive layer 4 on the first side of the third substrate 15 and the first insulating layer 5 on the second side of the third substrate 15;

[0237] Step S404, forming the second insulating layer 7 on the first side of the fourth substrate 16 and the second conductive layer 6 on the second side of the fourth substrate 16;

[0238] Step S406, bonding the third substrate 15 and the fourth substrate 16 so that the first conductive layer 4 contacts the second insulating layer 7 and the first insulating layer 5 contacts the second conductive layer 6;

[0239] Step S408, injecting liquid crystal between the third substrate 15 and the fourth substrate 16 to form the liquid crystal layer 3 between the third substrate 15 and the fourth substrate 16.

[0240] Herein, the step S402 and the step S404 are parallel steps.

[0241] Further, a more specific embodiment of the method for manufacturing is as follows.

[0242] Step S502, forming a to-be-cured layer having at least one opening 9 on the third substrate 15;

[0243] Step S504, forming the first conductive layer 4 on the first side of the to-be-cured layer and the second conductive layer 6 on the second side of the to-be-cured layer;

[0244] Step S506, forming the second conductive layer 6 on the second side of the fourth substrate 16 and the second insulating layer 7 on the first side of the fourth substrate 16;

[0245] Step S508, bonding the third substrate 15 and the fourth substrate 16 so that the first conductive layer 4 contacts the second insulating layer 7 and the first insulating layer 5 contacts the second conductive layer 6;

[0246] Step S510, curing the to-be-cured layer to form a cured layer 8;

[0247] Step S512, injecting liquid crystal into the interior of the cured layer 8 through the opening 9 to form the liquid crystal layer 3.

[0248] Herein, the step S504 to the step S508 are substantially the same as the step S402 to the step S406, and the step S512 is substantially the same as the step S408.

[0249] Wherein, the step S502-S504 and the step S506 are parallel steps.

[0250] Further, a more specific embodiment of the preparation method is as follows:

[0251] The step S602, forming a to-be-solidified layer with at least one opening 9 on the fourth substrate 16;

[0252] The step S604, forming a second conductive layer 6 on the second side of the to-be-solidified layer;

[0253] The step S606, forming a first conductive layer 4 on the first side of the third substrate 15 and a first insulating layer 5 on the second side of the third substrate 15;

[0254] The step S608, bonding the third substrate 15 and the fourth substrate 16, so that the first conductive layer 4 contacts the second insulating layer 7 and the first insulating layer 5 contacts the second conductive layer 6;

[0255] The step S610, solidifying the to-be-solidified layer to form a solidified layer 8;

[0256] The step S612, injecting liquid crystal into the interior of the solidified layer 8 through the opening 9 to form a liquid crystal layer 3.

[0257] Wherein, the step S604-S608 is basically the same as the step S402-S406, and the step S612 is basically the same as the step S408.

[0258] Wherein, the step S602-S604 and the step S606 are parallel steps.

[0259] Further, the preparation method further comprises:

[0260] The step S410, forming a first wave plate layer 10 on the side of the third substrate 15 away from the fourth substrate 16;

[0261] The step S412, forming a second wave plate layer 11 on the side of the fourth substrate 16 away from the third substrate 15;

[0262] The step S414a, forming a lens layer 12 on the side of the first wave plate layer 10 away from the third substrate 15;

[0263] The step S414b, forming a lens layer 12 on the side of the second wave plate layer 11 away from the fourth substrate 16.

[0264] Wherein, the step S410 and the step S412 are parallel steps.

[0265] The step S414a and the step S414b are mutually exclusive steps, that is, only one of the step S414a and the step S414b can be executed.

[0266] The steps S410-S412 can be performed before the step S402 or after the step S408.

[0267] The technical effects of the present application are as follows: the 3D lateral bonding process can be used to bond the first conductive layer and the second conductive layer through the lateral electrode contact and the standard flexible soft wire to form a standard electrical interface of the liquid crystal lens outward, without using a complex glass perforation process, simplifying the process complexity, reducing the production cost while ensuring the preparation quality.

[0268] Embodiment 3

[0269] This embodiment relates to a liquid crystal lens module and a preparation method thereof.

[0270] As shown in FIG. 1, a liquid crystal lens module according to an embodiment of the present application includes a first liquid crystal lens 1 and a second liquid crystal lens 2. Figure 5 As shown in FIG. 1, a liquid crystal lens module according to an embodiment of the present application includes a first liquid crystal lens 1 and a second liquid crystal lens 2.

[0271] In the present application, the focal lengths of the plurality of liquid crystal lenses can be the same or different. Preferably, the liquid crystal lenses with different focal lengths are stacked.

[0272] For the liquid crystal lens module of the present application, since each liquid crystal lens has two focal lengths, the combination of a plurality of liquid crystal lenses with different focal lengths can realize the change of the focal length, such as the stepless change of the focal length.

[0273] For the liquid crystal lens module of the present application, it includes at least a first liquid crystal lens and a second liquid crystal lens. The first liquid crystal lens includes a third substrate 15, a fourth substrate 16, a liquid crystal layer 3, a first conductive layer 4, a first insulating layer 5, a second conductive layer 6, a second insulating layer 7, a solidification layer 8, a first wave plate layer 10, a second wave plate layer 11, and a lens layer 12. The second liquid crystal lens includes a third substrate 15, a fourth substrate 16, a liquid crystal layer 3, a first conductive layer 4, a first insulating layer 5, a second conductive layer 6, a second insulating layer 7, a solidification layer 8, a first wave plate layer 10, a second wave plate layer 11, a lens layer 12, a polarization layer 13, and a protective layer 14.

[0274] In this embodiment, the first liquid crystal lens is in the order of the first wave plate layer 10, the third substrate 15, the fourth substrate 16, the second wave plate layer 11, and the lens layer 12, and the second liquid crystal lens is in the order of the first wave plate layer 10, the third substrate 15, the fourth substrate 16, the second wave plate layer 11, the lens layer 12, the polarization layer 13, and the protective layer 14.

[0275] In the case of a plurality of first liquid crystal lenses, the plurality of first liquid crystal lens layers are stacked, the lens layer 12 of the first liquid crystal lens located below is in contact with the first wave plate layer 10 of the first liquid crystal lens located above; the lens layer 12 of the first liquid crystal lens located at the uppermost is in contact with the first wave plate layer 10 of the second liquid crystal lens located above.

[0276] The preparation method of the first embodiment of the liquid crystal lens module as described above is as follows:

[0277] Step S702, stack a plurality of liquid crystal lens array as described in Embodiment 1 to form a liquid crystal lens array initial module;

[0278] Step S704, cut the liquid crystal lens array initial module to obtain a plurality of liquid crystal lens initial modules;

[0279] Step S706, respectively extend the first conductive layer 4 and the second conductive layer 6 of the plurality of liquid crystal lenses of the liquid crystal lens initial module outward to form a liquid crystal lens module.

[0280] In step S706, extending the first conductive layer 4 outward means extending the first conductive layer 4 with a rectangular longitudinal section to form a first conductive layer 4 with a T-shaped or L-shaped longitudinal section. That is, in the initial state, the first conductive layer 4 only includes a first transverse conductive layer; after extension, the first conductive layer 4 includes a first transverse conductive layer and a first longitudinal conductive layer.

[0281] In step S706, extending the second conductive layer 6 outward means extending the second conductive layer 6 with a rectangular longitudinal section to form a second conductive layer 6 with a T-shaped or L-shaped longitudinal section. That is, in the initial state, the second conductive layer 6 only includes a second transverse conductive layer; after extension, the second conductive layer 6 includes a second transverse conductive layer and a second longitudinal conductive layer.

[0282] Further, the preparation method further comprises:

[0283] Step S708, forming a polarization layer 13 outside the outermost liquid crystal lens array.

[0284] Further, the preparation method further comprises:

[0285] Step S710, forming a protective layer 14 outside the outermost liquid crystal lens array.

[0286] Further, the preparation method further comprises:

[0287] Step S712, forming a polarization layer 13 outside the outermost liquid crystal lens array;

[0288] Step S714, forming a protective layer 14 outside the polarization layer 13.

[0289] Wherein, the step S708, the step S710, the step S712 to the step S714 are three different embodiments, which cannot be performed simultaneously.

[0290] Wherein, the step S708, the step S710, the step S712 to the step S714 are performed after the step S702 and before the step S704.

[0291] Further, the preparation method further comprises:

[0292] Step S716, connecting the first conductive layer 4 and the second conductive layer 6 with the corresponding electrodes respectively.

[0293] For the liquid crystal lens module as described above, the preparation method of the second embodiment is as follows:

[0294] Step S802, stacking a plurality of liquid crystal lens to form a liquid crystal lens initial module.

[0295] Step S804, extending the first conductive layer 4 and the second conductive layer 6 of the plurality of liquid crystal lenses of the liquid crystal lens initial module respectively to form a liquid crystal lens module.

[0296] In the step S804, the extension of the first conductive layer 4 means extending the first conductive layer 4 with a rectangular longitudinal section to form a first conductive layer 4 with a T-shaped or L-shaped longitudinal section. That is, in the initial state, the first conductive layer 4 only includes a first transverse conductive layer; after extension, the first conductive layer 4 includes a first transverse conductive layer and a first longitudinal conductive layer.

[0297] In the step S804, the extension of the second conductive layer 6 means extending the second conductive layer 6 with a rectangular longitudinal section to form a second conductive layer 6 with a T-shaped or L-shaped longitudinal section. That is, in the initial state, the second conductive layer 6 only includes a second transverse conductive layer; after extension, the second conductive layer 6 includes a second transverse conductive layer and a second longitudinal conductive layer.

[0298] Further, the preparation method further comprises:

[0299] Step S806, forming a polarization layer 13 outside the outermost liquid crystal lens.

[0300] Further, the preparation method further comprises:

[0301] Step S808, forming a protective layer 14 outside the outermost liquid crystal lens.

[0302] Further, the preparation method further comprises:

[0303] Step S810, forming a polarizing layer 13 outside the liquid crystal lens located at the outermost side;

[0304] Step S812, forming a protective layer 14 outside the polarizing layer 13.

[0305] Among them, step S806, step S808, step S810 to step S812 are three different embodiments, which cannot be performed at the same time.

[0306] Among them, step S806, step S808, step S810 to step S812 are performed after step S802 and before step S804.

[0307] Further, the preparation method further comprises:

[0308] Step S814, connecting the first conductive layer 4 and the second conductive layer 6 with the corresponding electrodes respectively.

[0309] The technical effects of the present application are as follows: liquid crystal lens modules can be mass-produced through existing liquid crystal panel process lines, and multiple liquid crystal lens modules can be simultaneously prepared using a single ITO glass substrate, greatly reducing production costs and improving production efficiency; in the final forming stage, a 3D lateral bonding process is introduced to form the lead-out of the final liquid crystal electrode, thereby avoiding complex glass perforation processes and further simplifying the process complexity.

[0310] Embodiment 4

[0311] This embodiment relates to the head-mounted display optical system and the head-mounted display device of the present application.

[0312] For the head-mounted display optical system of the present application, the following embodiments are provided:

[0313] 1) comprising at least one liquid crystal lens as described in embodiment 2;

[0314] 2) comprising at least one liquid crystal lens module as described in embodiment 3.

[0315] In addition, the head-mounted display optical system can further include an image source structure (such as LCOS, DLP, Micro LED, LBS, etc.), a control structure (such as a processor, a chip, etc.), a power supply structure (such as a voltage conversion module, a power supply module, etc.).

[0316] For the head-mounted display device of the present application, the following embodiments are provided:

[0317] 1) comprising at least one liquid crystal lens as described in embodiment 2;

[0318] 2) comprising at least one liquid crystal lens module as described in embodiment 3;

[0319] 3) The head-mounted display optical system as described above.

[0320] In the present application, the head-mounted display device includes but is not limited to an augmented reality device (such as AR glasses), a virtual display device (such as VR glasses), a mixed reality device (such as MR glasses), an extended reality device (such as XR glasses), and the like.

[0321] Embodiment 5

[0322] This embodiment relates to one specific implementation of the liquid crystal lens array of the present application.

[0323] As shown in Figure 6 , the preparation method of the liquid crystal lens array includes:

[0324] (I) TN layer preparation

[0325] As shown in Figure 6 a:

[0326] (1) Cleaning of the substrate (ITO glass) and the top plate (ITO glass);

[0327] (2) Alignment of the substrate and the top plate;

[0328] (3) Top plate preparation

[0329] A plurality of lens unit areas are arranged on the substrate;

[0330] Silver paste printing is performed on the first side edge of each lens unit area to form a silver paste electrode;

[0331] Insulating material printing is performed on the second side edge of each lens unit area to form an insulating pattern;

[0332] (4) Substrate preparation

[0333] A plurality of lens unit areas are arranged on the top plate;

[0334] UV glue printing is performed on the outer edge of each lens unit area to form a UV pattern (reserved liquid crystal filling port);

[0335] Silver paste printing is performed on the second side edge of each lens unit area to form a silver paste electrode;

[0336] Insulating material printing is performed on the first side edge of each lens unit area to form an insulating pattern;

[0337] (5) Adding spacer (spacer) to the inside of the lens unit area of the substrate;

[0338] (6) aligning the top plate and the substrate upside down (i.e. the silver paste electrode of the top plate corresponds to the insulating pattern of the substrate, and the insulating pattern of the top plate corresponds to the silver paste electrode of the substrate), and pressing;

[0339] (7) UV curing the UV pattern to form a liquid crystal shell;

[0340] (8) liquid crystal filling through the liquid crystal filling port to the inside of the liquid crystal shell.

[0341] In step (1), the thickness of the substrate is generally less than 0.2 mm, and the thickness of the top plate is generally less than 0.2 mm.

[0342] The order of steps (7) and (8) can be adjusted according to whether the liquid crystal is affected by UV light curing.

[0343] (II) Wideband LC layer preparation

[0344] As shown in Figure 6 b:

[0345] (1) Attaching a wave plate film (e.g. 75 um thick) to the outside of the substrate and the outside of the top plate; or directly preparing a wave plate film on the outside of the substrate and the outside of the top plate to form a more compact stacked structure;

[0346] (2) Attaching a PB liquid crystal lens sheet (generally less than 0.1 mm thick, e.g. 75 um thick) to the outside of the wave plate film on the outside of the top plate;

[0347] For step (1), if the size (e.g. length, width, diameter) of the wave plate film is the same as the size (e.g. length, width, diameter) of the substrate (top plate), the entire wave plate film can be attached to the outside of the substrate (top plate); if the size (e.g. length, width, diameter) of the wave plate film is not the same as the size (e.g. length, width, diameter) of the substrate (top plate), it can be attached locally and repeatedly.

[0348] For step (2), depending on the form of the PB liquid crystal lens sheet, it can be attached entirely or locally and repeatedly.

[0349] Through steps (I) and (II), a single-layer liquid crystal lens array can be prepared. For this liquid crystal lens array, two different focal lengths can be changed according to the voltage state of the TN layer.

[0350] Example 6

[0351] This example relates to a specific implementation of the liquid crystal lens module of the present application.

[0352] As shown in Figure 7 , the preparation method of the liquid crystal lens module comprises:

[0353] (a) Stacking

[0354] like Figure 7 As shown in a, several liquid crystal lens arrays as described in Example 5 are stacked together;

[0355] Align the centers of several liquid crystal lens arrays;

[0356] Several liquid crystal lens arrays are pressed together;

[0357] A protective layer and a polarizing film are bonded on top of the topmost liquid crystal lens array to form a multilayer liquid crystal lens stack structure.

[0358] (II) Cutting

[0359] like Figure 7 As shown in a, the multilayer liquid crystal lens stack structure is cut to obtain several multilayer liquid crystal lens units.

[0360] (III) Modification

[0361] like Figure 7 As shown in a, the multilayer liquid crystal lens unit is laterally polished;

[0362] The silver paste electrodes of the multilayer liquid crystal lens unit are extended so that the silver paste electrodes protrude from the substrate and the top plate;

[0363] (iv) Bonding

[0364] like Figure 7 b~ Figure 7 As shown in c, select a flexible flat cable with the same interlayer spacing as the side section of the multilayer stacked structure, then align the flexible flat cable with the reserved L or T-shaped electrode contacts on the side of the stacked lens, and finally bond the aligned flexible flat cable and the electrode contacts with a bonding material (wherein, the bonding material includes, but is not limited to, silver paste).

[0365] Example 7

[0366] This embodiment relates to a specific implementation of the liquid crystal lens module of the present invention.

[0367] like Figure 8 As shown, the fabrication method of the liquid crystal lens module includes:

[0368] (a) Cutting

[0369] like Figure 8 As shown in Figure a, several liquid crystal lens arrays as described in Example 5 are cut to obtain single-layer liquid crystal lens units with different focal lengths.

[0370] (II) Stacking

[0371] likeFigure 8 a, several single-layer liquid crystal lens units are combined and stacked;

[0372] the centers of several single-layer liquid crystal lens units are aligned;

[0373] several single-layer liquid crystal lens units are laminated;

[0374] a protective layer + a polarizing film are attached to the upper layer of the uppermost single-layer liquid crystal lens unit, forming a multi-layer liquid crystal lens stack structure.

[0375] (Three) modification treatment

[0376] as shown in Figure 8 a, the multi-layer liquid crystal lens unit is side polished;

[0377] the silver paste electrode of the multi-layer liquid crystal lens unit is expanded so that the silver paste electrode protrudes from the substrate and the top plate;

[0378] (Four) bonding

[0379] as shown in Figure 8 b~c Figure 8 Figure 8 c, the silver paste electrode is bonded with the flat cable through silver paste printing (see step (four) of Example 6).

[0380] Each technical feature of the above-described embodiments can be combined arbitrarily. In order to make the description simple, not all possible combinations of each technical feature in the above-described embodiments are described, however, as long as the combination of these technical features does not exist contradictory, it should be considered as the scope of the present application.

[0381] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of the patent of the present application should be subject to the appended claims.

Claims

1. A liquid crystal lens array, characterized by, Comprising: a first substrate; a second substrate opposite to the first substrate; a plurality of liquid crystal layers arranged between the first substrate and the second substrate; a plurality of first conductive layers arranged on the side of the first substrate close to the second substrate and located on the first side of the corresponding liquid crystal layer; a plurality of first insulating layers arranged on the side of the first substrate close to the second substrate and located on the second side of the corresponding liquid crystal layer; a plurality of second conductive layers arranged on the side of the second substrate close to the first substrate and located on the second side of the corresponding liquid crystal layer and in contact with the corresponding first insulating layer; a plurality of second insulating layers arranged on the side of the second substrate close to the first substrate and located on the first side of the corresponding liquid crystal layer and in contact with the corresponding first conductive layer.

2. The liquid crystal lens array according to claim 1, wherein, Further comprising: a plurality of curing layers arranged between the first substrate and the second substrate, each of the curing layers has the corresponding liquid crystal layer inside and the corresponding first conductive layer, the corresponding first insulating layer, the corresponding second conductive layer, and the corresponding second insulating layer outside; a plurality of openings arranged in the corresponding curing layers for liquid crystal to flow into the inside of the curing layer; and / or a first wave plate layer arranged on the side of the first substrate away from the second substrate; a second wave plate layer arranged on the side of the second substrate away from the first substrate; a lens layer arranged on the side of the first wave plate layer away from the first substrate or on the side of the second wave plate layer away from the second substrate. Comprising:

3. A liquid crystal lens obtained by cutting a liquid crystal lens array as claimed in any one of claims 1 to 2, characterized by a third substrate which is a part of the first substrate of the liquid crystal lens array; a fourth substrate opposite to the third substrate which is a part of the second substrate of the liquid crystal lens array; a liquid crystal layer arranged between the third substrate and the fourth substrate; a first conductive layer arranged on the side of the third substrate close to the fourth substrate and located on the first side of the liquid crystal layer; a first insulating layer arranged on the side of the third substrate close to the fourth substrate and located on the second side of the liquid crystal layer; a second conductive layer arranged on the side of the fourth substrate close to the third substrate and located on the second side of the liquid crystal layer and in contact with the first insulating layer; a second insulating layer arranged on the side of the fourth substrate close to the third substrate and located on the first side of the liquid crystal layer and in contact with the first conductive layer. Further comprising:

4. The liquid crystal lens according to claim 3, characterized by ​ a cured layer, disposed between the third substrate and the fourth substrate, an interior of the cured layer being provided with the liquid crystal layer, an exterior of the cured layer being provided with the first conductive layer, the first insulating layer, the second conductive layer, the second insulating layer; at least one opening, disposed in the cured layer, for allowing liquid crystal to flow into the interior of the cured layer; and / or a first wave plate layer, disposed on a side of the third substrate distal to the fourth substrate; a second wave plate layer, disposed on a side of the fourth substrate distal to the third substrate; a lens layer, disposed on a side of the first wave plate layer distal to the third substrate or on a side of the second wave plate layer distal to the fourth substrate.

5. A liquid crystal lens module, characterized by comprising: comprising: a plurality of liquid crystal lenses according to any one of claims 3-4, the plurality of liquid crystal lenses being stacked. 6.The liquid crystal lens module of claim 5, wherein, further comprising: a polarizing layer, disposed on an exterior of an outermost liquid crystal lens; and / or a protective layer, disposed on an exterior of an outermost liquid crystal lens.

7. A head-mounted display optical system characterized by comprising: comprising: at least one liquid crystal lens according to any one of claims 3-4; or at least one liquid crystal lens module according to any one of claims 5-6.

8. A head-mounted display device, comprising: comprising: at least one liquid crystal lens according to any one of claims 3-4; or at least one liquid crystal lens module according to any one of claims 5-6; or; a head-mounted display optical system according to claim 7.

9. A method for producing a liquid crystal lens array, for producing the liquid crystal lens array according to any one of claims 1 to 2, characterized by, comprising: forming, on a first substrate, a plurality of first conductive layers and a plurality of first insulating layers arranged in an array, wherein each of the plurality of first conductive layers corresponds to one of the plurality of first insulating layers; forming, on a second substrate, a plurality of second conductive layers and a plurality of second insulating layers arranged in an array, wherein each of the plurality of second conductive layers corresponds to one of the plurality of second insulating layers; adhering the first substrate to the second substrate such that each of the plurality of first conductive layers is in contact with a corresponding one of the plurality of second insulating layers and each of the plurality of first insulating layers is in contact with a corresponding one of the plurality of second conductive layers; injecting liquid crystal between the first substrate and the second substrate to form a plurality of liquid crystal layers between the first substrate and the second substrate.

10. The method of claim 9, wherein, further comprising: forming, on a first substrate, a plurality of to-be-cured layers each having at least one opening, the to-be-cured layers being arranged in an array; forming, on a first side of each of the to-be-cured layers, a first conductive layer and on a second side of each of the to-be-cured layers, a second conductive layer; forming, on a second substrate, a plurality of second conductive layers and a plurality of second insulating layers arranged in an array, wherein each of the plurality of second conductive layers corresponds to one of the plurality of second insulating layers; adhering the first substrate to the second substrate such that each of the plurality of first conductive layers is in contact with a corresponding one of the plurality of second insulating layers and each of the plurality of first insulating layers is in contact with a corresponding one of the plurality of second conductive layers; curing the plurality of to-be-cured layers to form a plurality of cured layers; injecting liquid crystal into interiors of the plurality of cured layers through the plurality of openings to form liquid crystal layers; or forming, on a second substrate, a plurality of to-be-cured layers each having at least one opening, the to-be-cured layers being arranged in an array; forming a second conductive layer on a second side of each of the to-be-cured layers, and forming a first insulating layer on a first side of each of the to-be-cured layers; forming a plurality of first conductive layers and a plurality of first insulating layers on a first substrate in an array, wherein the plurality of first conductive layers correspond to the plurality of first insulating layers one by one; adhering the first substrate to the second substrate so that the plurality of first conductive layers are in contact with the corresponding plurality of second insulating layers, and the plurality of first insulating layers are in contact with the corresponding plurality of second conductive layers; curing the plurality of to-be-cured layers to form a plurality of cured layers; injecting liquid crystal into the interior of the corresponding cured layers through the plurality of openings to form a liquid crystal layer; and / or forming a first wave plate layer on a side of the first substrate away from the second substrate; forming a second wave plate layer on a side of the second substrate away from the first substrate; forming a lens layer on a side of the first wave plate layer away from the first substrate, or forming a lens layer on a side of the second wave plate layer away from the second substrate.

11. A method for producing a liquid crystal lens, for producing a liquid crystal lens as claimed in any one of claims 3 to 4, characterized by, comprising: forming a first conductive layer on a first side of a first substrate, and forming a first insulating layer on a second side of the first substrate; forming a second conductive layer on a second side of a second substrate, and forming a second insulating layer on a first side of the second substrate; adhering the first substrate to the second substrate so that the first conductive layer is in contact with the second insulating layer, and the first insulating layer is in contact with the second conductive layer; injecting liquid crystal between the first substrate and the second substrate to form a liquid crystal layer between the first substrate and the second substrate; or cutting the liquid crystal lens array prepared by the method according to any one of claims 1-2 or 9-10 to obtain a liquid crystal lens.

12. The method of claim 11, wherein, further comprising: forming a to-be-cured layer having at least one opening on a first substrate; forming a first conductive layer on a first side of the to-be-cured layer, and forming a second conductive layer on a second side of the to-be-cured layer; forming a second insulating layer on a first side of a second substrate, and forming a second conductive layer on a second side of the second substrate; adhering the first substrate to the second substrate so that the first conductive layer is in contact with the second insulating layer, and the first insulating layer is in contact with the second conductive layer; curing the to-be-cured layer to form a cured layer; injecting liquid crystal into the interior of the cured layer through the opening to form a liquid crystal layer; or forming a to-be-cured layer having at least one opening on a second substrate; forming a second insulating layer on a first side of the to-be-cured layer, and forming a second conductive layer on a second side of the to-be-cured layer; forming a first conductive layer on a first side of a first substrate, and forming a first insulating layer on a second side of the first substrate; adhering the first substrate to the second substrate so that the first conductive layer is in contact with the second insulating layer, and the first insulating layer is in contact with the second conductive layer; curing the to-be-cured layer to form a cured layer; injecting liquid crystal into the interior of the cured layer through the opening to form a liquid crystal layer; and / or forming a first wave plate layer on a side of the first substrate away from the second substrate; forming a second wave plate layer on the side of the second substrate away from the first substrate; forming a lens layer on the side of the first wave plate layer away from the first substrate, or forming a lens layer on the side of the second wave plate layer away from the second substrate.

13. A method for preparing a liquid crystal lens module, characterized by, comprising: stacking a plurality of liquid crystal lens arrays as claimed in any one of claims 1-2 or prepared by the preparation method as claimed in any one of claims 9-10 to form a liquid crystal lens array initial module; cutting the liquid crystal lens array initial module to obtain a plurality of liquid crystal lens initial modules; respectively extending the first conductive layer and the second conductive layer of each liquid crystal lens of the liquid crystal lens initial module outward to form a liquid crystal lens module; or stacking a plurality of liquid crystal lenses as claimed in any one of claims 3-4 or prepared by the preparation method as claimed in any one of claims 11-12 to form a liquid crystal lens initial module; respectively extending the first conductive layer and the second conductive layer of each liquid crystal lens of the liquid crystal lens initial module outward to form a liquid crystal lens module.

14. The method of claim 13, wherein, further comprising: forming a polarization layer and / or a protective layer on the outside of the liquid crystal lens array located at the outermost side; or forming a polarization layer and / or a protective layer on the outside of the liquid crystal lens located at the outermost side.

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