KR20120120409A - Liquid crystal optical element having multilayer structure, and method for manufacturing the liquid crystal optical element - Google Patents

Abstract

Provided are a multi-layered liquid crystal optical element and a method for manufacturing the same, which can facilitate processing, ensure a filling amount of liquid crystal and a sufficient optical distance L, and improve response speed and light transmittance. The multi-layered liquid crystal optical device 100 includes a first single element 10 in which a liquid crystal 40 is enclosed between a substrate 10a on which a segment electrode is formed and a substrate 10b on which an electrode is not formed, and an electrode. Liquid crystal between the second single element 20 in which the liquid crystal 40 is enclosed between the substrate 20a which is not formed and the substrate 20b in which the common electrode is formed, and the substrates 30a and 30b in which the electrode is not formed. A third single element 30 having 40 is encapsulated, and four third single elements 30 are disposed between the first single element 10 and the second single element 20 to be stacked. It is done by In addition, the alignment direction of the liquid crystals of the first single element 10 and the upper two third single elements 30 and the second single element 20 and the lower two third single elements 30 It is arrange | positioned so that it may mutually orthogonally cross with the orientation direction of a liquid crystal.

Description

Multi-layer liquid crystal optical device and method for manufacturing the same {LIQUID CRYSTAL OPTICAL ELEMENT HAVING MULTILAYER STRUCTURE, AND METHOD FOR MANUFACTURING THE LIQUID CRYSTAL OPTICAL ELEMENT}

The present invention relates to a multilayer structure liquid crystal optical element having a plurality of liquid crystal layers between a substrate on which a segment electrode is formed and a substrate on which a common electrode is formed, and a method of manufacturing the same.

Background Art Conventionally, various liquid crystal optical elements in which a liquid crystal is sandwiched between substrates on which electrodes are formed are known. For example, as an information recording medium, there are various optical disk devices such as CD and DVD. However, these optical disk devices have aberrations (distortion of condensation spots) due to thickness deviation or warpage caused by rotation. It is necessary to correct the recording and reproduction degree by correcting it. Therefore, a liquid crystal aberration correction element in which a liquid crystal is embedded is used as a substrate on which electrodes are formed in a concentric ring shape, thereby performing different phase control at the center portion and the outer edge portion of the luminous flux (Patent Document 1). .

In a conventional liquid crystal optical element, the molecular alignment state of the liquid crystal is electrically controlled, thereby changing properties such as refractive index with respect to light. By controlling the distribution of the refractive index in two or three dimensions, the amount of phase delay in each optical path and the refractive state of the optical path can be controlled. Therefore, a liquid crystal lens or liquid crystal aberration correction capable of electronically varying the focus point can be controlled. It is a functional element useful as an optical element, such as an element. However, in order to maximize the refraction effect of light useful for practical application, it is necessary to hold a sufficient amount of liquid crystals along the optical path between the corresponding both alignment films of the liquid crystal optical cell, which is why Between the alignment film), it is necessary to make it very thick about 30-100 micrometers with respect to a normal liquid crystal display cell being about several micrometers.

Moreover, it is known that the response speed of a liquid crystal is inversely proportional to the square of the thickness (between both alignment films) of a liquid crystal layer, and in the case of such a thick liquid crystal optical cell, response time is several 100 ms-several minutes. That is, many conventional liquid crystal optical elements have a problem that the response speed is slow.

The slow response time when controlling the device has great limitations in the focus variable lens function and the aberration correction function using the liquid crystal optical element, and has been a problem for practical use.

In recent years, in order to improve the power and response speed of a liquid crystal lens, the optical element which has two liquid crystal layers was proposed (patent document 2).

The optical element of patent document 2 superimposes two liquid crystal cells which have two liquid crystal layers, and is comprised by 2-layer structure. In each liquid crystal cell, the liquid crystal layer is divided into two layers by a transparent glass layer (insulating layer). In this case, an electrode exists in the connection surface of two liquid crystal cells.

Patent Document 1: Japanese Patent Application Laid-Open No. 2002-237077 Patent Document 2: Japanese Patent Application Laid-Open No. 2006-91826

However, the liquid crystal optical element described in Patent Document 1, as described above, needs to secure a sufficient optical distance L by transmitting a thick liquid crystal layer in order to obtain a refractive index change necessary for an application.

In general, it is known that when the liquid crystal layer becomes thick, the response time is delayed in proportion to the square of the thickness (between the two alignment films) of the liquid crystal layer. Therefore, when the thickness of the liquid crystal layer is thickened, there is a problem that the response speed is lowered, and there is a problem in practical use.

In addition, Patent Literature 2 is limited in increasing the liquid crystal lens power and improving the response speed. In order to make the lens power larger and the response speed faster, it is necessary to use a multilayer liquid crystal. However, when a multilayer liquid crystal layer is used, since the intermediate transparent glass layer is thick, the liquid crystal element becomes thick. Therefore, the response speed is lowered and a high applied voltage is required.

Moreover, in order to make a liquid crystal element thin, when a thin transparent glass layer is used, handling, washing, processing, baking, etc. are difficult in a manufacturing process.

In addition, when two liquid crystal cells are overlapped to form a two-layer structure, the ITO film, the high resistance film, and the alignment film exist on the substrate on the connection side of the two liquid crystal cells. Moreover, when it is set as a double structure, there existed a fault that the number of electrodes increased and the arrangement | positioning of the terminal connected to each electrode becomes complicated.

Therefore, in the present invention, after forming a single element of a liquid crystal cell having an electrode on one substrate and a single element of a plurality of liquid crystal cells having no electrode on both substrates, By polishing and laminating the substrate to a predetermined thickness, the processing can be facilitated, and the multi-layered liquid crystal optical can secure the filling amount of the liquid crystal and the sufficient optical distance L, and the response speed and the light transmittance can be improved. It is an object to provide an element and a method of manufacturing the same.

MEANS TO SOLVE THE PROBLEM In order to solve the said subject, the multilayer structure liquid crystal optical element which concerns on this invention is the 1st single element by which a liquid crystal is enclosed between the board | substrate with a segment electrode, and the board | substrate with no electrode, the board | substrate with a common electrode, A second single element in which liquid crystal is enclosed between a substrate on which no electrode is formed, and a third single element in which liquid crystal is enclosed between two substrates on which no electrode is formed; A plurality of third single elements are arranged and stacked between the single elements.

For example, in the multi-layered liquid crystal optical element, the substrate on which the electrode is not formed is processed thinly in a state where the liquid crystal is enclosed.

For example, in the said multilayer structure liquid crystal optical element, the orientation direction of the liquid crystal of a part of said 1st single element and the said 3rd single element, and the liquid crystal of the said 2nd single element and the said 3rd single element Are arranged to be orthogonal to each other.

Moreover, in order to solve the said subject, the manufacturing method of the multilayer structure liquid crystal optical element which concerns on this invention is a board | substrate with which an electrode was not formed after sealing a liquid crystal between the board | substrate with a segment electrode, and the board | substrate with which an electrode is not formed. The first single element forming step of forming a first single element by thinly processing the liquid crystal, and encapsulating the liquid crystal between the substrate on which the common electrode is formed and the substrate on which the electrode is not formed, and then thinly processing the substrate on which the electrode is not formed. The second end device forming step of forming a second end element, and the third end of forming a third end element by thinly processing the two substrates after encapsulating the liquid crystal between two substrates on which no electrode is formed. An element forming step and a laminating step of laminating and stacking a plurality of third single elements between the first single element and the second single element are provided.

For example, the liquid crystal is sealed using the dropping method. For example, in the manufacturing method of the said multilayer structure liquid crystal optical element, in the said lamination process, the orientation direction of the liquid crystal of a part of the said 1st single element and the said 3rd single element, and the said 2nd single element And orthogonal to the alignment direction of the liquid crystal of the other third single element.

According to the method for manufacturing a multilayer structure liquid crystal optical element and the multilayer structure liquid crystal optical element according to the present invention, after enclosing a liquid crystal between a substrate on which a segment electrode is formed and a substrate on which no electrode is formed, the substrate on which the electrode is not formed is made thin. Processing to form a first single element, encapsulating the liquid crystal between the substrate on which the common electrode is formed and the substrate on which the electrode is not formed, and then processing the substrate on which the electrode is not formed thinly to form a second single element, and After encapsulating the liquid crystal between the two unformed substrates, the two substrates are thinly processed to form a third single element, and a plurality of third single elements are disposed between the first single element and the second single element. By laminating, the processing can be facilitated, and the filling amount of the liquid crystal and the sufficient optical distance L can be ensured, thereby improving the response speed and the light transmittance. The.

Moreover, since the board | substrate with which an electrode is not formed is processed thin in the state which enclosed the liquid crystal, the deformation | transformation (curvature) of a board | substrate can be prevented at the time of encapsulating a liquid crystal, and uniform optical characteristic can be obtained. Moreover, when processing a board | substrate thin, a board | substrate can be processed to a flat surface without bending.

In addition, the liquid crystal is encapsulated using the dropping method, and the jaggedness of the dropping amount and the space volume can be suppressed in the enlarged range of the sealing material at the time of the combination of the substrates. Compared with the sealing structure, there is no damage of the sealing portion and there is an advantage of not being stressed.

Moreover, it is arrange | positioned so that it may orthogonally cross with the alignment direction of the liquid crystal of a part of a 1st single element and a 3rd single element, and the alignment direction of the liquid crystal of a 2nd single element and another 3rd single element, and is a conventional double The electrode layer (ITO layer) and the high resistance film layer are smaller than the liquid crystal lens, and the light transmittance can be significantly improved.

Moreover, since the number of electrodes is smaller than the conventional double liquid crystal lens, a structure is simple, manufacture becomes easy, and manufacturing cost can be reduced.

Moreover, since it is comprised from the single element of a liquid crystal cell, compared with the conventional double liquid crystal lens, since an alignment is unnecessary when it is set as a multilayer structure, assembly becomes easy.

1 is an exploded view showing the configuration of a multi-layered liquid crystal optical element 100 of the embodiment;
2 is a cross-sectional view taken along AA showing the structure of a multilayer liquid crystal optical element 100;
3 is a flowchart showing a method of manufacturing a multilayer structure liquid crystal optical element 100;
4 is a cross-sectional view showing a state before and after polishing of the first single element 10;
5 is a sectional view showing a state before and after polishing of the second single element 20; and
6 is a cross-sectional view showing a state before and after polishing of the third single-element 30.

EMBODIMENT OF THE INVENTION The best form for implementing the multilayered structure liquid crystal optical element which concerns on this invention, and its manufacturing method is demonstrated with reference to drawings.

FIG. 1: is an exploded view which shows the structure of the multilayered liquid crystal optical element 100 of 1st Embodiment. 2 is a cross-sectional view taken along the line A-A showing the configuration of the multi-layered liquid crystal optical element 100.

As shown in FIG. 1 and FIG. 2, the multi-layered liquid crystal optical device 100 includes a first single device 10, a second single device 20, and a plurality (four in this example). A third single element 30 is provided, and four third single elements 30 are arranged between the first single element 10 and the second single element 20 to be stacked. Further, the alignment direction of the liquid crystals of the first single element and the two third single elements 30 above, and the liquid crystals of the second single element 20 and the two third single elements 30 below. Are arranged to be orthogonal to each other.

The 1st single element 10 is the board | substrate 10a in which the 1st drive electrode 11 and the 2nd drive electrode 12 as a segment electrode were formed, the board | substrate 10b in which the electrode was not formed, and a board | substrate It consists of the liquid crystal 40 and the sealing material 50 enclosed between 10a and the board | substrate 10b. The substrate 10a is a transparent glass substrate having a thickness of 300 μm. The substrate 10b is a transparent glass substrate having a thickness of 30 μm. In addition, the liquid crystal 40 is sealed inward by the sealing material 50.

In addition, as shown in FIG. 1, a circular second drive electrode 12 is disposed at the center of the upper substrate 10a, and a first drive electrode 11 is disposed around the circular drive electrode 12. The first drive electrode 11 is connected to the _first drive terminal V ₁ . In addition, the second drive electrode 12 is connected to the _second drive terminal V ₂ . It can be used as a lens by applying different voltages to the first drive electrode 11 and the second drive electrode 12.

The second single element 20 is formed between a substrate 20a on which no electrode is formed, a substrate 20b in which a circular common electrode 21 is formed in the center, and a space between the substrate 20a and the substrate 20b. It is comprised from the liquid crystal 40 and the sealing material 50 which were enclosed. The substrate 20a is a transparent glass substrate having a thickness of 30 μm. The substrate 20b is a transparent glass substrate having a thickness of 300 µm. The liquid crystal 40 is sealed inward by the sealing material 50. In addition, a hole is drilled in the thickness direction of the substrate 20b, and an earth terminal V ₀ for connecting to the common electrode 21 is provided in this hole (see FIG. 2).

The third single element 30 is composed of the substrates 30a and 30b on which no electrodes are formed, the liquid crystal 40 enclosed between the substrate 30a and the substrate 30b, and the sealing material 50. It is. The substrates 30a and 30b are transparent glass substrates having a thickness of 30 μm. The liquid crystal 40 is sealed inward by the sealing material 50.

In addition, in this case, the thickness of each liquid crystal layer is 10-30 micrometers. The liquid crystal 40 is a positive nematic liquid crystal (Np liquid crystal) in which the dielectric constant anisotropy of the long axis of the molecule toward the electric field direction is applied, for example, when a voltage is applied.

Here, the alignment film, the transparent insulating layer, and the board | substrate 10a which are generally provided between the common electrode 21, the 1st drive electrode 11, the 2nd drive electrode 12, and the liquid crystal 40 are here. The antireflection film or the like provided in the drawing is omitted.

Hereinafter, the manufacturing method of the multilayer structure liquid crystal optical device 100 of the present invention will be described with reference to FIGS. 3 to 6. 4-6, only one liquid crystal cell is shown.

As shown in FIG. 3, when manufacturing the multi-layer liquid crystal optical device 100, first, the first single device 10, the second single device 20, and the third single device 30 are first manufactured. Write each one. Then, a plurality (four) of the third end elements 30 are provided and stacked between the first end element 10 and the second end element 20.

For example, like the steps S11 to 19 (the first short element forming step) in FIG. 3, the first short element 10 is created. First, the above substrate (in the case of one element, becomes the substrate 10a) is processed to a predetermined dimension (S11). For example, sheet-like glass with a thickness of 300 µm is processed to a dimension of 200 × 200 mm. A plurality of elements can be formed in the sheet glass. Next, an ITO film is pasted on the outer surface of the upper substrate to form an electrode (S12). Here, shaping | molding process by etching etc. is performed and the 1st drive electrode 11 and the 2nd drive electrode 12 are formed for every element. Next, a high resistance film is attached to the surface of the inner side (the side for filling the liquid crystal) of the upper substrate (S13). Furthermore, an alignment film is formed and alignment treatment is performed (S14). The alignment film is a liquid crystal alignment film such as polyimide (PI). After the alignment treatment, an antireflection film (AR film) is formed on the surface of the substrate.

In addition, the lower substrate (in the case of one element, becomes the substrate 10b) is processed to a predetermined dimension (S15). For example, sheet-like glass with a thickness of 300 µm is processed to a dimension of 200 × 200 mm. Next, an alignment film is formed on the surface of the lower substrate inside (the side filling the liquid crystal), and alignment processing is performed (S16). Next, the sealing material mixed with the gap material is printed (S17). Here, the sealing material for encapsulating the liquid crystal is printed in a ring shape for each element.

Next, the liquid crystal is dripped inside the ring-shaped sealing material using a liquid crystal dropping device (S18). Next, as shown in Fig. 4A, the upper substrate and the lower substrate are assembled to form a cell (S19). Next, the lower substrate is polished to a thickness of 30 μm (S20). That is, the lower substrate is thinned up to the line C in Fig. 4A. Thereby, the 1st single element 10 as shown in FIG.4 (b) can be obtained. As the polishing method, a mechanical method or an etching method is used.

In addition, as shown in steps S21 to 29 (second short element formation step) in FIG. 3, the second short element 20 is formed. First, the above substrate (in the case of one element, becomes the substrate 20a) is processed to a predetermined dimension (S21). For example, sheet-like glass with a thickness of 300 µm is processed to a dimension of 200 × 200 mm. Next, an alignment film is formed on the surface of the inner substrate (the side filling the liquid crystal), and alignment processing is performed (S22).

Further, the lower substrate (in the case of one element, becomes the substrate 20b) is processed to a predetermined dimension (S24). For example, sheet-like glass with a thickness of 300 µm is processed to a dimension of 200 × 200 mm. For example, an ITO film is affixed on the surface of the lower substrate inside (the side filling the liquid crystal) to form an electrode (S24). Here, shaping | molding process by etching etc. is performed and a common electrode is formed for every element. In the process of forming the electrode 20, the earth terminal V ₀ is provided on the substrate 10. Next, an alignment film is formed on the surface of the lower substrate inside (the side on which the liquid crystal is filled), and alignment processing is performed (S25). Next, the sealing material which mixed the gap material is printed (S26). Here, the sealing material for encapsulating the liquid crystal is printed in a ring shape for each element.

Next, the liquid crystal is dripped inside the ring-shaped sealing material using a liquid crystal dropping device (S27). Next, as shown in Fig. 5A, the upper substrate and the lower substrate are assembled to form a cell (S28). Next, the substrate is polished to a thickness of 30 μm (S29). That is, the lower substrate is thinned up to the line C in Fig. 5A. Thereby, the 2nd single element 20 as shown in FIG. 5 (b) can be obtained.

Moreover, the 3rd single element 20 is created like step S31-38 (3rd single element formation process) in FIG. First, the above substrate (in the case of one element, becomes the substrate 30a) is processed to a predetermined dimension (S31). For example, sheet-like glass with a thickness of 300 µm is processed to a dimension of 200 × 200 mm. Next, an alignment film is formed on the surface of the inner substrate (the side filling the liquid crystal), and alignment processing is performed (S32).

In addition, the lower substrate (in the case of one element, becomes the substrate 30b) is processed to a predetermined dimension (S33). For example, sheet-like glass with a thickness of 300 µm is processed to a dimension of 200 × 200 mm. Next, an alignment film is formed on the surface of the lower substrate inside (the side on which the liquid crystal is filled), and alignment processing is performed (S34). Next, a sealing material in which the gap material is mixed is printed (S35). Here, the sealing material for encapsulating the liquid crystal is printed in a ring shape for each element.

Next, the liquid crystal is dripped inside the ring-shaped sealing material using a liquid crystal dropping device (S36). Next, as shown in Fig. 6A, the upper substrate and the lower substrate are assembled to form a cell (S37). Next, the upper substrate and the lower substrate are polished to a thickness of 30 μm, respectively (S38). That is, the upper substrate and the lower substrate are thinned up to the line C in Fig. 6 (a). For this reason, the 3rd single element 30 as shown in FIG. 6 (b) can be obtained.

Next, four third single elements 30 are disposed and stacked between one first single element 10 and one second single element 20 (S41). Here, since the light polarization and the non-polarization lens are used, the alignment directions of the liquid crystals of the first single element 10 and the two third single element 30 are as shown by the arrows in FIG. The direction parallel to (left and right directions). The alignment direction of the liquid crystal of the second single element 20 and the two lower third single elements 30 is a direction perpendicular to the ground as shown by the arrow in FIG. 2. That is, the alignment direction of the liquid crystals of the first single element 10 and the two third single elements 30, and the liquid crystals of the second single element 20 and the lower two third single elements 30. The orientation directions of are arranged to be orthogonal to each other. Moreover, between each element is bonded by an optical adhesive agent.

Next, the granulated product having a plurality of stacked liquid crystal elements is cut into respective multilayer structure liquid crystal optical elements 100 using a slicer or the like, that is, cut into product sizes (S42). For this reason, the multilayer structure liquid crystal optical element 100 shown in FIG. 1 can be obtained.

Thus, in this embodiment, the multilayer structure liquid crystal optical element 100 is the first stage in which the liquid crystal 40 is filled between the substrate 10a on which the segment electrode is formed and the substrate 10b on which the electrode is not formed. The second single element 20 in which the liquid crystal 40 is filled between the element 10, the substrate 20a on which no electrode is formed, and the substrate 20b on which the common electrode is formed, and the electrode is not formed. A third single element 30 filled with the liquid crystal 40 between the substrates 30a and 30b is provided, and a third third element between the first single element 10 and the second single element 20 is provided. A plurality of single elements 30 are arranged and stacked. The board | substrate of the adhering side of each single element is grind | polished to predetermined thickness, and is laminated.

When manufacturing the multilayer structure liquid crystal optical element 100, first, the 1st single element 10, the 2nd single element 20, and the 3rd single element 30 are produced, respectively. Then, four third single elements 30 are disposed between the first single elements 10 and the second single elements 20 to be stacked. Further, the alignment direction of the liquid crystals of the first single element 10 and the two third single elements 30 above, the second single element 20 and the two lower third single elements 30 below. It is arrange | positioned so that it may mutually orthogonally cross with the orientation direction of the liquid crystal.

For this reason, while processing can be made easy, the filling amount of liquid crystal and sufficient optical distance L can be ensured, and a response speed and a light transmittance can be improved.

Moreover, since the board | substrate with which the electrode is not formed is thinly processed to the predetermined thickness in the state which enclosed the liquid crystal, the deformation | transformation (bending) of a board | substrate can be prevented at the time of encapsulating a liquid crystal, and a uniform optical characteristic can be obtained. have. Moreover, when processing a board | substrate thin, a board | substrate can be processed into a flat surface without bending.

Moreover, the orientation direction of the liquid crystal of one part of the 1st single element 10 and the 3rd single element 30, and the orientation of the liquid crystal of the 2nd single element 20 and the other 3rd single element 30. It is disposed to be orthogonal to each other in the direction, so that the electrode layer (ITO film) and the high resistance film layer are smaller than the conventional double liquid crystal lens, the light transmittance can be significantly improved, and the manufacturing cost can be reduced.

In addition, since a relatively thick glass substrate is used up to the cell assembly step of each single element, deformation of the substrate can be prevented when the liquid crystal is encapsulated, and uniform optical characteristics can be obtained.

Moreover, since the number of electrodes is smaller than the conventional double liquid crystal lens, a structure is simple, manufacture becomes easy, and manufacturing cost can be reduced.

Moreover, since it is comprised from a single element, compared with the conventional double liquid crystal lens, since an alignment is unnecessary when it is set as a multilayered structure, assembly becomes easy.

By applying a voltage between the electrodes provided on the substrates 10a and 20b, the molecular orientation of the liquid crystal can be controlled and the optical characteristics can be changed. Therefore, the response time as a liquid crystal optical element can be shortened, and it can be put into practical use as a liquid crystal aberration correction element used for correcting aberration which occurs during recording and reproduction in a light pickup.

In addition, in embodiment mentioned above, although the number of the 3rd single-element 30 was four, it is not limited to this. For example, two, six, eight third single elements 30 may be used. As a special lens, the number of the third single elements 30 may be odd, for example, one, three, five, or the like.

Moreover, in the above-mentioned embodiment, in the multilayer structure liquid crystal optical element 100, the alignment direction of the liquid crystal of the two third single element 30 on the side of the first single element 10 is the first single element. Although the example was demonstrated that it was the same as (10), and the orientation direction of the liquid crystal of the two 3rd single element 30 by the side of the 2nd single element 20 is the same as the 2nd single element 20, it limited to this. It doesn't happen. You may arrange | position so that the orientation direction of the liquid crystal of adjacent single elements may mutually become perpendicular to each other.

Moreover, in the manufacturing method of the multilayered structure liquid crystal optical element 100 mentioned above, the example which uses several sheets of sheet-shaped glass of dimension 200x200 mm, forms a some element on it, and cut | disconnects a product size last. However, it is not limited to this.

This outbreak is a liquid crystal optical element having an autofocus function and a micro macro switching function built in a micro camera in a cellular phone, a portable information terminal (PDA), a digital device, or the like, or in an optical disk device. It can be used as a liquid crystal optical element used for correcting aberration generated during recording and reproduction.

10: first single element
10a, 10b, 20a, 20b, 30a, 30b: substrate
11: first drive electrode (segment electrode)
12: second drive electrode (segment electrode)
20: second single element
21: common electrode
30: third single element
40: liquid crystal
50: sealing material
100: multilayer structure liquid crystal optical element
V ₀ : Earth terminal
V ₁ : first driving terminal
V ₂ : second drive terminal

Claims (6)

A first single element in which a liquid crystal is sealed between a substrate on which a segment electrode is formed and a substrate on which an electrode is not formed;
A second single element in which a liquid crystal is sealed between a substrate on which a common electrode is formed and a substrate on which an electrode is not formed;
A third single element in which a liquid crystal is enclosed between two substrates on which no electrode is formed,
And a plurality of third single elements are disposed between the first single elements and the second single elements, and stacked. The multi-layered liquid crystal optical device according to claim 1, wherein the substrate on which the electrode is not formed is thinly processed in the state in which the liquid crystal is enclosed. The liquid crystal display device according to claim 1, wherein the alignment direction of the liquid crystals of the first single element and the third single element and the alignment direction of the liquid crystals of the second single element and the third single element are orthogonal to each other. Multi-layered liquid crystal optical device, characterized in that disposed. A first single element forming step of encapsulating a liquid crystal between a substrate on which a segment electrode is formed and a substrate on which no electrode is formed, and then forming a first single element by thinly processing the substrate on which the electrode is not formed;
A second single element forming step of forming a second single element by thinly processing the substrate on which the electrode is not formed, after encapsulating the liquid crystal between the substrate on which the common electrode is formed and the substrate on which the electrode is not formed;
A third single element forming step of forming a third single element by thinly processing the two substrates after encapsulating the liquid crystal between two substrates on which no electrodes are formed;
And a laminating step of arranging and stacking a plurality of the third single elements between the first single elements and the second single elements. The method for manufacturing a multilayer liquid crystal optical element according to claim 4, wherein the liquid crystal is encapsulated using a dropping method. The liquid crystal display according to claim 4, wherein in the lamination step, an alignment direction of liquid crystals of a portion of the first single element and the third single element and an alignment of liquid crystals of the second single element and the third single element. A method for manufacturing a multilayer liquid crystal optical element, characterized in that it is disposed to be perpendicular to each other in a direction.

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