CN107479297B - Liquid crystal lens preparation method and device - Google Patents
Liquid crystal lens preparation method and device Download PDFInfo
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- CN107479297B CN107479297B CN201710820639.8A CN201710820639A CN107479297B CN 107479297 B CN107479297 B CN 107479297B CN 201710820639 A CN201710820639 A CN 201710820639A CN 107479297 B CN107479297 B CN 107479297B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1341—Filling or closing of cells
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Abstract
The invention provides a method and a device for preparing a liquid crystal lens. Wherein, the method comprises the following steps: preparing an intermediate liquid crystal lens; wherein the grating angle of the middle liquid crystal lens is 0 degree; freezing the middle liquid crystal lens for a preset time to convert the liquid crystal from a liquid state to a solid state; cutting the frozen middle liquid crystal lens to enable the grating angle of the cut middle liquid crystal lens to be a preset angle; and (4) edge sealing is carried out on the cut middle liquid crystal lens to form the liquid crystal lens. In the invention, because the grating angle of the middle liquid crystal lens is 0 degree, when the crystal is poured to form the middle liquid crystal lens, the phenomenon of poor pouring due to the grating angle can not occur, and the quality of the liquid crystal lens is improved.
Description
Technical Field
The invention relates to the technical field of optics, in particular to a method and a device for preparing a liquid crystal lens.
Background
Early three-dimensional (3D) display technologies can enable people to enjoy stereoscopic pictures mainly with the aid of auxiliary devices such as 3D glasses and 3D helmets. With the continuous development of 3D display technology, the conventional 3D display technology is gradually replaced by the self-stereoscopic display, and the self-stereoscopic display becomes the mainstream of the current 3D display technology. The auto-stereoscopic display mainly realizes the stereoscopic display of pictures by arranging a grating on a display screen and based on the light splitting principle of the grating.
Current autostereoscopic display technologies mainly include: lenticular-grating autostereoscopic display and slit-grating autostereoscopic display. The lenticular grating has two types, wherein one type can only display a 3D picture, namely the pure lenticular grating; another is a liquid crystal lens that can realize switching between 3D and 2D pictures. The liquid crystal lens is mainly manufactured by utilizing the characteristic that the liquid crystal material changes the molecular arrangement when voltage is applied, so that the refractive index of the liquid crystal lens when the voltage is applied is different from the refractive index when the voltage is not applied.
When the current liquid crystal lens is manufactured, crystal filling is needed. Due to the structural limitation of the liquid crystal lens, the phenomenon of insufficient filling is easy to occur during crystal filling, and the quality of the liquid crystal lens is affected.
Disclosure of Invention
In view of the above, an object of the embodiments of the present invention is to provide a method and an apparatus for manufacturing a liquid crystal lens, which can avoid the phenomenon of insufficient liquid crystal filling during the liquid crystal filling process, and improve the quality of the liquid crystal lens.
In a first aspect, an embodiment of the present invention provides a method for manufacturing a liquid crystal lens, including:
preparing an intermediate liquid crystal lens; wherein the grating angle of the middle liquid crystal lens is 0 degree;
freezing the middle liquid crystal lens for a preset time to convert the liquid crystal from a liquid state to a solid state;
cutting the frozen middle liquid crystal lens to enable the grating angle of the cut middle liquid crystal lens to be a preset angle;
and (4) edge sealing is carried out on the cut middle liquid crystal lens to form the liquid crystal lens.
With reference to the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where: the preparation of the intermediate liquid crystal lens specifically comprises the following steps:
forming a concave lens on the upper conductive substrate to make an upper substrate; the grating angle of the concave lens is 0 degree;
forming an orientation layer on the lower conductive substrate to manufacture a lower substrate; forming an opening on the lower substrate and one side of a grating of the middle liquid crystal lens;
and aligning the upper substrate and the lower substrate to form a box, and filling crystals from the opening to form the middle liquid crystal lens.
With reference to the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where: the forming of the concave lens on the upper conductive substrate further comprises, before forming the upper substrate:
electroplating a first conductive layer on one side of the first substrate to form an upper conductive substrate;
wherein the first substrate is: any one of a glass substrate, a polyethylene terephthalate (PET) substrate or a Polycarbonate (PC) substrate;
the first conductive layer is: any one of an Indium Tin Oxide (ITO) conducting layer, a graphene conducting layer, a nano silver conducting layer, a metal grid conducting layer and a carbon nano tube conducting layer.
With reference to the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, where: forming a concave lens on an upper conductive substrate, forming an upper substrate, specifically comprising:
stamping and molding the concave lens at one side of the upper conductive substrate plated with the conductive layer through a mold, and exposing and curing the stamped and molded concave lens;
separating the mold from the concave lens to form the upper substrate.
With reference to the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, where: before forming the alignment layer on the lower conductive substrate, the method further comprises:
electroplating a second conductive layer on one side of the second substrate to form a lower conductive substrate;
wherein the second substrate is: any one of a glass substrate, a polyethylene terephthalate (PET) substrate or a Polycarbonate (PC) substrate;
the second conductive layer is: any one of an Indium Tin Oxide (ITO) conducting layer, a graphene conducting layer, a nano silver conducting layer, a metal grid conducting layer and a carbon nano tube conducting layer.
With reference to the first aspect, an embodiment of the present invention provides a fifth possible implementation manner of the first aspect, where: the width of the opening is the same as the width of the side forming the opening.
With reference to the first aspect, an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, where: the opening is formed by the following steps:
and screen printing frame sealing structures at the edges of the second edge, the third edge and the fourth edge of one side, away from the lower conductive substrate, of the orientation layer, wherein the opening is formed between the frame sealing structures at the third edge and the fourth edge.
With reference to the first aspect, an embodiment of the present invention provides a seventh possible implementation manner of the first aspect, where:
the freezing temperature is lower than the melting point of the liquid crystal.
With reference to the first aspect, an embodiment of the present invention provides an eighth possible implementation manner of the first aspect, where:
the middle liquid crystal lens and the liquid crystal lens are both rectangular;
and when the frozen middle liquid crystal lens is cut, the grating angle between the cutting line and the middle liquid crystal lens is a preset angle.
In a second aspect, an embodiment of the present invention further provides an apparatus for preparing a liquid crystal lens, an intermediate liquid crystal lens preparing device, configured to prepare an intermediate liquid crystal lens; wherein the grating angle of the middle liquid crystal lens is 0 degree;
the freezing device is used for freezing the middle liquid crystal lens for a preset time so as to convert the liquid crystal from a liquid state to a solid state;
the cutting equipment is used for cutting the frozen middle liquid crystal lens so that the grating angle of the cut middle liquid crystal lens is a preset angle;
and the edge sealing equipment is used for sealing the edge of the cut middle liquid crystal lens to form the liquid crystal lens.
The liquid crystal lens preparation method and the device provided by the embodiment of the invention firstly prepare a middle liquid crystal lens; the grating angle of the middle liquid crystal lens is 0 degrees, namely the axis of the concave lens is perpendicular to two edges of the middle liquid crystal lens and is parallel to the other two edges. Then, freezing the middle liquid crystal lens for a preset time, and cutting the frozen middle liquid crystal lens after the liquid crystal is converted from a liquid state to a solid state, so that the grating angle of the cut middle liquid crystal lens is a preset angle; and (4) edge sealing is carried out on the cut middle liquid crystal lens to form the liquid crystal lens. In the process, the grating angle of the middle liquid crystal lens is 0 degrees, so that when the middle liquid crystal lens is formed by filling crystals, the phenomenon of insufficient filling caused by the grating angle is avoided, and the quality of the liquid crystal lens is improved.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a liquid crystal lens provided by an embodiment of the invention under 3D display;
FIG. 2 is a schematic structural diagram of a liquid crystal lens according to an embodiment of the present invention in a 2D display;
FIG. 3 is a schematic diagram illustrating an insufficient liquid crystal filling phenomenon in a liquid crystal lens according to an embodiment of the present invention;
FIG. 4 is a flow chart illustrating a method for fabricating a liquid crystal lens according to an embodiment of the present invention;
FIG. 5 is a flow chart illustrating a specific method of fabricating an intermediate liquid crystal lens provided by an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of an upper substrate according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a lower substrate according to an embodiment of the present invention;
FIG. 8 is a schematic diagram illustrating a structure for cutting an intermediate liquid crystal lens according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of an apparatus for manufacturing a liquid crystal lens according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, a liquid crystal lens capable of switching between 2D display and 3D display includes: an upper glass substrate 101 and a lower glass substrate 102 disposed opposite to each other; an upper ITO electrode 103 is arranged on one side of the upper glass substrate 101 facing the lower glass substrate 102; a lower Indium Tin Oxide (ITO) electrode 104 is provided on a side of the lower glass substrate 102 facing the upper glass substrate 101. A plurality of strip-shaped concave lenses 106 made of polymer materials are formed on one side of the upper ITO electrode 103 facing the lower ITO electrode 104, the axes of the strip-shaped concave lenses 106 are all parallel, and the refractive index of the concave lenses 106 is np An alignment layer 105 is formed on the side of the lower ITO electrode 104 facing the upper ITO electrode 103, the rubbing direction of the alignment layer 105 is parallel to the polarization direction of the liquid crystal display panel 109 transmitting the polarizing plate 108, a liquid crystal layer 107 is formed between the concave lens 106 and the alignment layer 105, the liquid crystal layer 107 has birefringence, and the refractive index is n when the liquid crystal layer 107 is arranged in paralleleRefractive index n in the vertical arrangementoAnd n ise＞no＝np。
When the liquid crystal lens is used, the liquid crystal lens is arranged on the surface of a display screen (109 shown in fig. 1), and a polarizer 108 is arranged between the display screen 109 and the liquid crystal lens. The main realization principle for realizing the switching between the 2D display and the 3D display is as follows: when no voltage is applied between the upper ITO electrode 103 and the lower ITO electrode 104, the liquid crystal layer 107 molecules are horizontally aligned (see FIG. 1), the alignment direction is parallel to the polarization direction of the display 109 through the polarizer 108, and the refractive index is neGreater than the refractive index n of the polymer materialpA 3D display state; when the upper ITO electrode 103 and the lower ITO electrode 104, the liquid crystal molecules are vertically aligned along the electric field (as shown in FIG. 2), perpendicular to the polarization direction, and have a refractive index noEqual to the refractive index n of the polymer materialpThe state is displayed in 2D.
As shown in FIG. 3, when the liquid crystal lens is subjected to liquid crystal filling, liquid crystal needs to be filled into a space between the concave lens and the orientation layer from the sealing edge, and because the grating angle (namely the grating inclination angle in FIG. 3) α (namely the angle formed by the axis of the concave lens and one edge of the liquid crystal lens) is larger than 0 degree, the space formed between the part of the concave lens positioned at the edge of the 2D/3D switching liquid crystal lens and the orientation layer is sealed, and a liquid crystal flow channel is blocked, so that an under-filling area exists as shown in FIG. 3, the phenomenon of the under-filling defect occurs in the liquid crystal filling process, and the quality of the liquid crystal lens is influenced.
For the convenience of understanding the present embodiment, a method for manufacturing a liquid crystal lens disclosed in the present embodiment will be described in detail first.
It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "upper", "lower", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In addition, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 4, a method for manufacturing a liquid crystal lens provided in the embodiment of the present application specifically includes:
s401: preparing an intermediate liquid crystal lens; wherein, the grating angle of the middle liquid crystal lens is 0 degree.
In the specific implementation, the middle liquid crystal lens is a special liquid crystal lens, and the structure of the middle liquid crystal lens is the same as that of the liquid crystal lens, but the grating angle is 0 °. In the subsequent step S403, the intermediate liquid crystal lens is cut to obtain a liquid crystal lens meeting the size requirement, so that the area of the intermediate liquid crystal lens is larger than that of the finally formed liquid crystal lens.
Specifically, referring to fig. 5, an embodiment of the present application provides a specific method for preparing an intermediate liquid crystal lens, including:
s501: forming a concave lens on the upper conductive substrate to make an upper substrate; the grating angle of the concave lens is 0 degree.
In specific implementation, referring to fig. 6, the axes of the concave lenses 106 formed on the upper conductive substrate are all parallel to the Y axis and parallel to the X axis in the established three-dimensional coordinate system, that is, if the upper substrate is regarded as a part of a liquid crystal lens, the grating angle of the concave lens 106 is 0 °.
Specifically, before forming the concave lens on the upper conductive substrate, the method further includes: and electroplating the first conductive layer on one side of the first substrate to form an upper conductive substrate.
Wherein the first substrate is: any one of a glass substrate, a polyethylene terephthalate (PET) substrate or a Polycarbonate (PC) substrate;
the first conductive layer is: any one of an Indium Tin Oxide (ITO) conducting layer, a graphene conducting layer, a nano silver conducting layer, a metal grid conducting layer and a carbon nano tube conducting layer.
Here, taking the first substrate as a glass substrate and the conductive layer as an ITO conductive layer as an example:
the first substrate is the upper glass substrate 101 in fig. 1; ITO is plated on one side of the upper glass substrate 101 to form an upper ITO electrode 103 (i.e., a first conductive layer), and the upper glass substrate 101 and the upper ITO electrode 103 together constitute an upper conductive substrate.
When the concave lens is formed on the upper conductive substrate, the concave lens can be formed by stamping the side of the upper conductive substrate plated with the conductive layer through a mold.
Specifically, a convex lens matched with the concave lens is formed on the mold, and a frame is formed at the edge of the convex lens; the interior of the frame contains a polymer material that forms the concave lens, which polymer material, when contained in a mold, is in a state that is easily molded and, after exposure, changes to a hard solid state. And pressing the side of the mold, which is provided with the polymer material, and the side, which is plated with the conductive layer, of the upper conductive substrate together, so that the polymer material is tightly attached to the first conductive layer. After exposure of the polymer material, the polymer material transforms into a hard solid state and is fixed with the first conductive layer, forming a concave lens on the upper conductive substrate. Subsequently, the mold and the formed concave lens are separated, and an upper substrate is formed.
S502: forming an orientation layer on the lower conductive substrate to manufacture a lower substrate; and an opening is formed in a first edge of the lower substrate, which is vertical to the grating of the middle liquid crystal lens.
In specific implementation, referring to fig. 7, for convenience of description, a side of the lower conductive substrate on which the opening is disposed is referred to as a first side, and a side opposite to and parallel to the first side is referred to as a second side; two sides adjacent to and perpendicular to the first side are referred to as a third side and a fourth side. The first side of the opening formed on the lower conductive substrate is parallel to the X-axis in the established three-dimensional coordinate system, and the first side is one of two sides of the lower conductive substrate perpendicular to the grating (the axis of the concave lens).
Here, when the opening is provided, a frame may be sealed at edges of the second, third, and fourth sides of the side of the alignment layer away from the lower conductive substrate by screen printing; the frame sealing frame is a thermocuring frame sealing glue and mainly used for sealing the liquid crystal box so as to prevent liquid crystal leakage or air from entering the liquid crystal box. The opening is formed between the third edge and the frame sealing dummy of the fourth edge, that is, the frame sealing dummy has a width of 0 on the first edge, that is, there is no frame sealing dummy on the first edge, so that when the first substrate and the second substrate are aligned into a box, the second edge, the fourth edge, and the third edge of the lower conductive substrate are all sealed with the first substrate, and the first edge is a non-sealed edge, so that the opening for filling crystals is formed. Wherein, in order to realize the crystal filling of all concave lenses, the length of the opening is equal to the length of the first edge.
In addition, before forming the alignment layer on the lower conductive substrate, the method further includes: and electroplating a second conductive layer on one side of the second substrate to form the lower conductive substrate.
Wherein the second substrate is: any one of a glass substrate, a polyethylene terephthalate (PET) substrate or a Polycarbonate (PC) substrate;
the second conductive layer is: any one of an Indium Tin Oxide (ITO) conducting layer, a graphene conducting layer, a nano silver conducting layer, a metal grid conducting layer and a carbon nano tube conducting layer.
Here, taking the second substrate as the lower glass substrate and the second conductive layer as the ITO conductive layer as an example: the second substrate is the lower glass substrate 102 in fig. 1; the lower glass substrate 102 is electroplated with ITO on one side to form a lower ITO electrode 104, and the lower glass substrate 102 and the lower ITO electrode 104 together constitute a lower conductive substrate.
It should be noted here that the rubbing direction of the alignment layer 105 of the liquid crystal lens finally manufactured is parallel to the polarization direction of the liquid crystal display panel 109 transmitting the polarizing plate 108.
In addition, it should be noted that the steps S501 and S502 are not executed in the order, and S501 may be executed first, and then S502 may be executed; or executing S502 first and then executing S501; s501 and S502 may also be executed in parallel.
S503: and aligning the upper substrate and the lower substrate to form a box, and filling crystals from the opening to form the middle liquid crystal lens.
When the liquid crystal display device is specifically realized, the upper substrate and the lower substrate are respectively an upper part and a lower part of the middle liquid crystal lens, and the shapes and the areas of the upper substrate and the lower substrate are generally consistent during manufacturing, namely, the upper substrate and the lower substrate can be integrally formed when being matched. When the upper substrate and the lower substrate are aligned and boxed, actually, one side of the upper substrate provided with the concave lens and one side of the lower substrate provided with the orientation layer are opposite and fixed together, so that a boxed whole body with a space in front of the concave lens and the orientation layer as a liquid crystal circulation space is formed between the upper substrate and the lower substrate, all the liquid crystal circulation spaces are subjected to crystal filling at an opening, and finally the middle lens is formed.
S402: and freezing the middle liquid crystal lens for a preset time so as to convert the liquid crystal from a liquid state to a solid state.
In particular implementations, the liquid crystal is typically liquid at ambient temperature. When the middle liquid crystal lens performs crystal filling, liquid crystal also enters a liquid crystal flowing space formed before the concave lens and the orientation layer. The intermediate liquid crystal lens formed at this time cannot be used specifically, and the intermediate liquid crystal lens is cut so that the size of the intermediate liquid crystal lens meets the production requirement. Therefore, the intermediate liquid crystal lens is frozen for a predetermined time to convert the liquid crystal from the state to the solid state.
Specifically, the freezing temperature is less than the melting point of the liquid crystal. When the temperature of the liquid crystal is below the melting point of the liquid crystal, the liquid state is converted into the solid state, the middle liquid crystal lens can be cut, and the structure of the liquid crystal lens formed after cutting cannot be damaged.
S403: and cutting the frozen middle liquid crystal lens to enable the grating angle of the cut middle liquid crystal lens to be a preset angle.
In a specific implementation, as shown in fig. 8, the liquid crystal lens is generally rectangular in shape; the shape of the intermediate liquid crystal lens is also generally rectangular.
When cutting, in order to ensure that the grating angle of the liquid crystal lens is a preset angle, when the frozen middle liquid crystal lens is cut, the grating angle between the cutting line and the middle liquid crystal lens is a preset angle.
Wherein, in order to save materials, cutting is generally performed from two opposite corners of the middle liquid crystal lens at the time of cutting.
S404: and (4) edge sealing is carried out on the cut middle liquid crystal lens to form the liquid crystal lens.
And after the middle liquid crystal lens is cut to form the shape of the liquid crystal lens required by production, edge sealing is carried out on the cut middle liquid crystal lens to form the liquid crystal lens.
It should be noted that, when the cutting and the edge sealing are performed on the cut middle liquid crystal lens, the cutting and the edge sealing are also performed at a temperature lower than the melting point of the liquid crystal, so as to prevent the liquid crystal from being converted from a solid state to a liquid state due to an excessively high temperature in the subsequent production process, and thus the liquid crystal flows out from the cut edge when the edge sealing is not completed on the cut middle liquid crystal lens.
In addition, the intermediate liquid crystal lens needs to be cleaned before edge sealing.
The method for preparing the liquid crystal lens provided by the embodiment of the application comprises the steps of firstly preparing a middle liquid crystal lens; the grating angle of the middle liquid crystal lens is 0 degrees, namely the axis of the concave lens is perpendicular to two edges of the middle liquid crystal lens and is parallel to the other two edges. Then, freezing the middle liquid crystal lens for a preset time, and cutting the frozen middle liquid crystal lens after the liquid crystal is converted from a liquid state to a solid state, so that the grating angle of the cut middle liquid crystal lens is a preset angle; and (4) edge sealing is carried out on the cut middle liquid crystal lens to form the liquid crystal lens. In the process, the grating angle of the middle liquid crystal lens is 0 degrees, so that when the middle liquid crystal lens is formed by filling crystals, the phenomenon of insufficient filling caused by the grating angle is avoided, and the quality of the liquid crystal lens is improved.
Based on the same inventive concept, the embodiment of the present invention further provides a device for manufacturing a liquid crystal lens corresponding to the method for manufacturing a liquid crystal lens, and since the principle of solving the problem of the device in the embodiment of the present invention is similar to that of the method for manufacturing a liquid crystal lens in the embodiment of the present invention, the implementation of the device can refer to the implementation of the method, and repeated details are not described again.
Still another embodiment of the present invention further provides a device for manufacturing a liquid crystal lens, as shown in fig. 9, the device for manufacturing a liquid crystal lens provided by the embodiment of the present invention includes:
the intermediate liquid crystal lens preparation equipment is used for preparing an intermediate liquid crystal lens; wherein the grating angle of the middle liquid crystal lens is 0 degree;
the freezing device is used for freezing the middle liquid crystal lens for a preset time so as to convert the liquid crystal from a liquid state to a solid state;
the cutting equipment is used for cutting the frozen middle liquid crystal lens so that the grating angle of the cut middle liquid crystal lens is a preset angle;
and the edge sealing equipment is used for sealing the edge of the cut middle liquid crystal lens to form the liquid crystal lens.
According to the liquid crystal lens preparation device provided by the embodiment of the application, firstly, the middle liquid crystal lens is prepared through the middle liquid crystal lens preparation device; the grating angle of the middle liquid crystal lens is 0 degrees, namely the axis of the concave lens is perpendicular to two edges of the middle liquid crystal lens and is parallel to the other two edges. Then, freezing the middle liquid crystal lens for a preset time through freezing equipment, and cutting the frozen middle liquid crystal lens by using cutting equipment after the liquid crystal is converted from a liquid state to a solid state, so that the grating angle of the cut middle liquid crystal lens is a preset angle; and finally, using edge sealing equipment to seal the cut middle liquid crystal lens to form the liquid crystal lens. In the process, the grating angle of the middle liquid crystal lens is 0 degrees, so that when the middle liquid crystal lens is formed by filling crystals, the phenomenon of insufficient filling caused by the grating angle is avoided, and the quality of the liquid crystal lens is improved.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A method for preparing a liquid crystal lens, comprising:
preparing an intermediate liquid crystal lens; wherein the grating angle of the middle liquid crystal lens is 0 degree;
freezing the middle liquid crystal lens for a preset time to convert the liquid crystal from a liquid state to a solid state;
cutting the frozen middle liquid crystal lens to enable the grating angle of the cut middle liquid crystal lens to be a preset angle;
edge sealing is carried out on the cut middle liquid crystal lens to form a liquid crystal lens;
the preparation of the intermediate liquid crystal lens specifically comprises the following steps:
forming a concave lens on the upper conductive substrate to make an upper substrate; the grating angle of the concave lens is 0 degree;
forming an orientation layer on the lower conductive substrate to manufacture a lower substrate; forming an opening on the lower substrate and one side of a grating of the middle liquid crystal lens;
and aligning the upper substrate and the lower substrate to form a box, and filling crystals from the opening to form the middle liquid crystal lens.
2. The method of claim 1, wherein the forming the concave lens on the upper conductive substrate further comprises, before the forming the upper substrate:
electroplating a first conductive layer on one side of the first substrate to form an upper conductive substrate;
wherein the first substrate is: any one of a glass substrate, a polyethylene terephthalate (PET) substrate or a Polycarbonate (PC) substrate;
the first conductive layer is: any one of an Indium Tin Oxide (ITO) conducting layer, a graphene conducting layer, a nano silver conducting layer, a metal grid conducting layer and a carbon nano tube conducting layer.
3. The method of claim 2, wherein forming the concave lens on the upper conductive substrate and forming the upper substrate comprise:
stamping and molding the concave lens at one side of the upper conductive substrate plated with the conductive layer through a mold, and exposing and curing the stamped and molded concave lens;
separating the mold from the concave lens to form the upper substrate.
4. The method for producing a liquid crystal lens according to claim 1,
before forming the alignment layer on the lower conductive substrate, the method further comprises:
electroplating a second conductive layer on one side of the second substrate to form a lower conductive substrate;
wherein the second substrate is: any one of a glass substrate, a polyethylene terephthalate (PET) substrate or a Polycarbonate (PC) substrate;
the second conductive layer is: any one of an Indium Tin Oxide (ITO) conducting layer, a graphene conducting layer, a nano silver conducting layer, a metal grid conducting layer and a carbon nano tube conducting layer.
5. The method of manufacturing a liquid crystal lens according to claim 1 or 4, wherein the width of the opening is the same as the width of the side where the opening is formed.
6. The method for manufacturing a liquid crystal lens according to claim 5, wherein the opening is formed by the steps of:
and screen printing frame sealing structures at the edges of the second edge, the third edge and the fourth edge of one side, away from the lower conductive substrate, of the orientation layer, wherein the opening is formed between the frame sealing structures at the third edge and the fourth edge.
7. The method of claim 1, wherein the freezing temperature is lower than the melting point of the liquid crystal.
8. The method for manufacturing a liquid crystal lens according to claim 1, wherein the intermediate liquid crystal lens and the liquid crystal lens are rectangular;
and when the frozen middle liquid crystal lens is cut, the grating angle between the cutting line and the middle liquid crystal lens is a preset angle.
9. An apparatus for manufacturing a liquid crystal lens, comprising:
the intermediate liquid crystal lens preparation equipment is used for preparing an intermediate liquid crystal lens; wherein the grating angle of the middle liquid crystal lens is 0 degree;
the freezing device is used for freezing the middle liquid crystal lens for a preset time so as to convert the liquid crystal from a liquid state to a solid state;
the cutting equipment is used for cutting the frozen middle liquid crystal lens so that the grating angle of the cut middle liquid crystal lens is a preset angle;
the edge sealing equipment is used for sealing the cut middle liquid crystal lens to form a liquid crystal lens;
wherein the intermediate liquid crystal lens manufacturing apparatus is configured to manufacture the intermediate liquid crystal lens in the following manner:
forming a concave lens on the upper conductive substrate to make an upper substrate; the grating angle of the concave lens is 0 degree;
forming an orientation layer on the lower conductive substrate to manufacture a lower substrate; forming an opening on the lower substrate and one side of a grating of the middle liquid crystal lens;
and aligning the upper substrate and the lower substrate to form a box, and filling crystals from the opening to form the middle liquid crystal lens.
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| CN101900850A (en) * | 2010-05-06 | 2010-12-01 | 天马微电子股份有限公司 | Manufacturing process of grating phase difference liquid crystal film |
| CN102362502A (en) * | 2009-03-25 | 2012-02-22 | 皇家飞利浦电子股份有限公司 | Liquid crystal cell manufacture |
| CN105929618A (en) * | 2016-06-20 | 2016-09-07 | 宁波万维显示科技有限公司 | Liquid crystal fresnel lens and preparation method thereof |
| CN106483693A (en) * | 2016-12-30 | 2017-03-08 | 深圳市华星光电技术有限公司 | The detection means of mesomorphic state and its detection method in liquid crystal panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9726907B2 (en) * | 2015-06-23 | 2017-08-08 | Indizen Optical Technologies, S.L. | Rewritable lens and method of manufacturing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102362502A (en) * | 2009-03-25 | 2012-02-22 | 皇家飞利浦电子股份有限公司 | Liquid crystal cell manufacture |
| CN101900850A (en) * | 2010-05-06 | 2010-12-01 | 天马微电子股份有限公司 | Manufacturing process of grating phase difference liquid crystal film |
| CN105929618A (en) * | 2016-06-20 | 2016-09-07 | 宁波万维显示科技有限公司 | Liquid crystal fresnel lens and preparation method thereof |
| CN106483693A (en) * | 2016-12-30 | 2017-03-08 | 深圳市华星光电技术有限公司 | The detection means of mesomorphic state and its detection method in liquid crystal panel |
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