CN103270447B - Multiplet liquid crystal optical device and manufacture method thereof - Google Patents
Multiplet liquid crystal optical device and manufacture method thereof Download PDFInfo
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- CN103270447B CN103270447B CN201180055801.2A CN201180055801A CN103270447B CN 103270447 B CN103270447 B CN 103270447B CN 201180055801 A CN201180055801 A CN 201180055801A CN 103270447 B CN103270447 B CN 103270447B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/12—Fluid-filled or evacuated lenses
- G02B3/14—Fluid-filled or evacuated lenses of variable focal length
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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
- 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
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
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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
- G02F1/291—Two-dimensional analogue deflection
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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
- G02F1/294—Variable focal length devices
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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
- G02F2203/00—Function characteristic
- G02F2203/28—Function characteristic focussing or defocussing
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Nonlinear Science (AREA)
Abstract
The invention provides a kind of mass productivity with excellence, and sufficient optical range can be guaranteed, and multiplet liquid crystal optical device and the manufacture method thereof of response speed can be improved.Multiplet liquid crystal optical device, the liquid crystal cell being sealed with liquid crystal between the substrate its substrate being formed with segment electrode by multiple on medial surface and medial surface being formed with common electrode is stacked mutually and form, and the substrate being formed with segment electrode and the substrate being formed with common electrode are processed into thin specific thickness under the state of enclosing liquid crystal.
Description
Technical field
The present invention relates to a kind of multiplet liquid crystal optical device and manufacture method thereof of stacked two or more liquid crystal cell, this liquid crystal cell accompanies liquid crystal and forms between the substrate being formed with electrode, and can control focal length by applying voltage.
Background technology
In the prior art, as the optical element using liquid crystal, following liquid crystal optical device is known to people: the liquid crystal layer possess a pair transparency carrier, forming a pair transparency electrode on the transparent substrate and be clamped between transparency carrier, and can according to the voltage swing applied in-between the electrodes varifocal.As this liquid crystal optical device, such as to have in subminiature camera such as being built in mobile phone, personal digital assistant device (PDA) or digital device and there is the liquid crystal optical device of automatic focusing function or grand micro-(macromicro) handoff functionality, or the aberration produced time in optical disc apparatus for revising the storage/regeneration of laser head (opticalpickup) and liquid crystal aberration compensating element used etc. (such as, patent documentation 1).
In existing liquid crystal optical device, electric control is carried out to the molecules align state of liquid crystal, change thus character such as the refractive indexes of light.By carrying out controlling to make the distribution of refractive index to change with two dimension or three-dimensional mode, the delayed phase amount of each light path or the refractive status of light path can be controlled thus, therefore, this liquid crystal optical device is as can the useful function element of the optical element of liquid crystal lens or liquid crystal aberration compensating element etc. of electronic zoom.
Prior art document
Patent documentation
Patent documentation 1: JP 2002-237077 publication.
Summary of the invention
The problem that invention will solve
But, according to the available liquid crystal optical element comprising the element recorded in patent documentation 1, in order to play the refraction effect of light useful in actual applications to greatest extent, need the liquid crystal keeping amount fully between a pair transparency electrode of liquid crystal optical device along light path, for this reason, compared with being about several μm with common liquid crystal display cells, the greatly thickening thickness to about 30-100 μm of liquid crystal layer (between two alignment films).
In addition, the response speed of liquid crystal optical device and the thickness (between two alignment films) of liquid crystal layer square form inverse proportion, in the liquid crystal optical device of this thick liquid crystal layer, the response time is for number 100ms was to several minutes.That is, there is the slow problem of response speed in available liquid crystal optical element.
With regard to response speed during opertaing device is slow, very large restriction is played to the focus-variable lens function or lens error correction function utilizing liquid crystal optical device, and is realize a practical problem.
Therefore, the present invention proposes for solving the aforementioned problems in the prior, the object of the invention is to, there is provided a kind of and can have excellent mass productivity, and sufficient optical range can be guaranteed, and multiplet liquid crystal optical device and the manufacture method thereof of response speed can be improved.
Solve the method for problem
According to the present invention, a kind of following multiplet liquid crystal optical device is provided, described optical element is stacked mutually and form by multiple liquid crystal cell, described liquid crystal cell be formed on medial surface the substrate of segment electrode and medial surface are formed with common electrode substrate between be sealed with liquid crystal, be formed with the substrate of segment electrode and be formed with the substrate of common electrode, under the state of enclosing liquid crystal, being processed into thin specific thickness.
Owing to being formed with the substrate of the segment electrode of multiple liquid crystal cell and being formed with the substrate of common electrode, thin specific thickness is processed under the state being sealed with liquid crystal, therefore, it is possible to prevent the distortion (flexure) of substrate when enclosing liquid crystal, and uniform optical characteristics can be obtained.In addition, when substrate processing makes it thinning, due to smooth face can be processed into when making substrate not produce flexure, therefore, it is possible to easily realize a large amount of production.In addition, due to multiple liquid crystal cell through processing thinning after stacked, therefore, it is possible to guarantee sufficient optical range, and can response speed be improved.In this manual, so-called " medial surface of substrate " refers to there is the face of that side of liquid crystal in this substrate.
Preferably, the side of multiplet liquid crystal optical device is provided with multiple electrode terminal, these multiple electrode terminals possess: conductive layer, and it is printed in the side of multiplet liquid crystal optical device; The conductive pattern of regulation area, it is printed in the adjacent corner above multiplet liquid crystal optical device.By this way, without the need to by elongated for the glass substrate of side and form the part of extraction electrode, thus connection reliability can be guaranteed, and can miniaturization be realized.In this manual, " liquid crystal optical device above and below " refers to, the lateral surface that there is not that side of liquid crystal of the outermost liquid crystal cell in this liquid crystal optical device, such as, refers to upper side and the downside of Fig. 2 respectively.In addition, in this manual, " side of liquid crystal optical device " refers to, the liquid crystal optical device of rectangular parallelepiped with its above and perpendicular below four faces.
Preferably, the liquid crystal aligning direction of stacked mutually liquid crystal cell configures in orthogonal crossing mode.Thereby, it is possible to make the light zero deflection that have passed.
Preferably, liquid crystal is divided into multiple layer by transparent insulcrete.In this wise, the loading of liquid crystal and sufficient optical range can be guaranteed.
According to the present invention, provide a kind of manufacture method of multiplet liquid crystal optical device, it comprises: the first electrode forming process, forms segment electrode at first glass substrate that can cut out multiple liquid crystal cell; Second electrode forming process, forms common electrode at second glass substrate that can cut out multiple liquid crystal cell; Element group assembling procedure, forming element group substrate, element group substrate has and is being formed with the multiple liquid crystal cells enclosing liquid crystal between the first glass substrate of segment electrode and the second glass substrate being formed with common electrode; Slim manufacturing procedure, after assembling procedure, is processed into thin specific thickness by the first glass substrate being formed with segment electrode and the second glass substrate of being formed with common electrode; Lamination process, by stacked mutually for the multiple element group substrates thinning through processing; Cut off operation, stacked multiple element group substrate cuttings are separated into rectangle or single liquid crystal cell.
After assembling procedure, the substrate being formed with segment electrode is processed into thin specific thickness with the substrate being formed with common electrode, the distortion (flexure) of substrate can be prevented when enclosing liquid crystal, and uniform optical characteristics can be obtained.In addition, when substrate processing makes it thinning, smooth face can be processed into when making substrate not produce flexure.In addition, due to multiple liquid crystal cell through processing thinning after stacked, therefore, it is possible to guarantee sufficient optical range, and can response speed be improved.
Preferably, described method and then comprise: side terminal portion formation process, in the side printed conductive layer of described rectangle or single liquid crystal cell, and forms multiple side terminal portion; Surface terminal portion formation process, rectangle or single liquid crystal cell surface printing conductive pattern and form multiple surface terminal portion, described multiple surface terminal portion is electrically connected with described multiple side terminal portion and has regulation area respectively.So, forming the part of extraction electrode without the need to making the glass substrate of side elongated as prior art, the reliability connected can be guaranteed, and realize miniaturization, and can easily realize a large amount of production.
Preferably, in lamination process, the liquid crystal aligning direction of described liquid crystal cell stacked mutually configures in orthogonal crossing mode.Thereby, it is possible to make the light zero deflection that have passed.
Invention effect
According to the present invention, due to multiplet liquid crystal optical device multiple liquid crystal cell through processing thinning after stacked and form, therefore there is excellent mass productivity, and sufficient optical range can be guaranteed, and can response speed be improved.
In addition, by arranging the multiple electrode terminals be connected with segment electrode and common electrode respectively on the side of multiplet liquid crystal optical device, the connection reliability of liquid crystal optical device can be guaranteed, and the miniaturization of liquid crystal optical device can be realized.
Accompanying drawing explanation
Fig. 1 is the stereographic map of the multiplet liquid crystal optical device structure schematically showing first embodiment of the invention.
Fig. 2 is the sectional view along A-A line of the multiplet liquid crystal optical device structure schematically showing Fig. 1.
Fig. 3 is the exploded view of the multiplet liquid crystal optical device structure schematically showing Fig. 1.
Fig. 4 is the process flow diagram of the manufacture method of the multiplet liquid crystal optical device representing Fig. 1.
Fig. 5 be represent make the substrate of liquid crystal cell thinning grinding before and after the sectional view of state.
Fig. 6 is the stereographic map of the structure of the multiplet liquid crystal optical device schematically showing second embodiment of the invention.
Fig. 7 is the sectional view along B-B line of the multiplet liquid crystal optical device structure schematically showing Fig. 6.
Embodiment
Hereinafter, with reference to the accompanying drawings of the embodiment of multiplet liquid crystal optical device of the present invention.
Fig. 1 represents the structure of the multiplet liquid crystal optical device 100 of first embodiment of the invention, Fig. 2 represents the section along A-A line of this multiplet liquid crystal optical device 100, and Fig. 3 represents the electrode of multiplet liquid crystal optical device 100 and the configuration status of electrode terminal.
As shown in Figure 1-Figure 3, multiplet liquid crystal optical device 100 is formed as follows: overlapped each other by the first liquid crystal cell 100a being sealed with liquid crystal 40 and the second liquid crystal cell 100b of being sealed with liquid crystal 40, and bonding forms one, makes it have rectangular shape thus.Multiple electrode terminal 91,92,93 and 94 is formed at this multiplet liquid crystal optical device 100.In addition, the direction of orientation of the direction of orientation of the liquid crystal of the first liquid crystal cell 100a and the liquid crystal of the second liquid crystal cell 100b configures in orthogonal crossing mode.
First liquid crystal cell 100a and the second liquid crystal cell 100b, it possesses first substrate 10, second substrate 20, the first transparency electrode 50 be formed on the medial surface of first substrate 10, the second transparency electrode 60 and the 3rd transparency electrode 70 be formed on the medial surface of second substrate 20 respectively, is enclosed in the liquid crystal 40 between first substrate 10 and second substrate 20 by encapsulant 30.Central portion on the lateral surface of the second substrate 20 of the first liquid crystal cell 100a is pasted with non reflecting film 21.Central portion on the lateral surface of the first substrate 10 of the second liquid crystal cell 100b is pasted with non reflecting film 11.Such as, non reflecting film 11 and 21 there is certain thickness and surface in concavo-convex.
In addition, in figs. 2 and 3, eliminate in the first transparency electrode 50, second transparency electrode 60 and the alignment films usually arranged between the 3rd transparency electrode 70 and liquid crystal 40, the diagram of transparent insulating layer etc. that is arranged on first substrate 10 and second substrate 20.
First substrate 10 and second substrate 20, it is made up of transparent glass substrate respectively.Between first substrate 10 and second substrate 20, form territory, liquid crystal filling area by encapsulant 30, and be sealed with liquid crystal 40 in this territory, liquid crystal filling area.These first substrates 10 and second substrate 20 are processed into thin specific thickness (such as, 50-100 μm) under the state being sealed with liquid crystal 40.
Liquid crystal 40 is such as that molecular long axis is positive nematic liquid crystal (Np liquid crystal) to the dielectric constant anisotropy in direction, electric boundary when applying voltage.In the situation of this example, the thickness of liquid crystal layer is 10-30 μm.Liquid crystal 40 also can be made up of other liquid crystal materials possessing identical function.
First transparency electrode 50 is common electrode, and it adopts ITO(tin indium oxide) material and being formed on the medial surface of first substrate 10.This first transparency electrode 50 is such as formed as circular, and is electrically connected with electrode terminal 91.In addition, alignment films is formed with on the surface of the first transparency electrode 50.
Second transparency electrode 60 is segment electrode, its central portion adopting ITO material and be formed on the medial surface of second substrate 20.This second transparency electrode 60 is such as formed as circular, and is electrically connected with electrode terminal 94.This second transparency electrode 60 is formed in the mode that can apply independently control voltage by this electrode terminal 94.
3rd transparency electrode 70 is segment electrode, adopts ITO material and is formed in the second transparency electrode 60 on the medial surface of second substrate 20 around.3rd transparency electrode 70 shape is the shape that central portion has circular grooving portion, and is electrically connected with electrode terminal 92.3rd transparency electrode 70 is formed in the mode that can apply independently control voltage by this electrode terminal 92.
As shown in Figure 3, well heater 80 to be formed around the mode of the first transparency electrode 50 on the medial surface of first substrate 10.This well heater 80 is electrically connected with electrode terminal 93 and 91.
Surface terminal portion 91b, 92b, 93b and 94b that electrode terminal 91,92,93 and 94 comprises side terminal portion 91a, 92a, 93a and 94a and formed on above.Side terminal portion 91a, 92a, 93a and 94a are formed by the side printed conductive layer at multiplet liquid crystal optical device 100.On the one hand, surface terminal portion 91b, 92b, 93b and 94b, formed by the position printed conductive patterns shape corresponding with side terminal portion 91a, 92a, 93a and 94a on multiplet liquid crystal optical device 100.These electrode terminals 91,92,93 and 94 are electrically connected with the first transparency electrode 50, second transparency electrode 60, the 3rd transparency electrode 70 and well heater 80.Therefore, the control voltage applied from outside by these electrode terminals 91,92,93 and 94 puts on the first transparency electrode 50, second transparency electrode 60, the 3rd transparency electrode 70 and well heater 80 respectively.
In addition, in each bight corresponding with the face of the electrode forming first substrate 10 and second substrate 20, conductive pattern 91c, 92c, 93c and 94c is printed with.At this, the first transparency electrode 50 is connected with conductive pattern 91c.Second transparency electrode 60 is connected with conductive pattern 94c.3rd transparency electrode 70 is connected with conductive pattern 92c.Well heater 80 is connected with conductive pattern 93c.By printed conductive patterns shape 91c, 92c, 93c and 94c, the contact area in electrode and the side terminal portion corresponding with this electrode becomes greatly, can guarantee the reliability of conducting.In addition, when when printing side, side portion of terminal 91a, 92a, 93a and 94a, can prevent the conductive material of printing from entering inside.
Below, the manufacture method of multiplet liquid crystal optical device 100 is described.Fig. 4 is the process flow diagram of the manufacture method representing multiplet liquid crystal optical device 100.Fig. 5 represent make the substrate of liquid crystal cell thinning grinding before and after state.
As shown in Figure 4, when manufacturing multiplet liquid crystal optical device 100, first, make the first liquid crystal cell 100a and the second liquid crystal cell 100b respectively, and stacked the first liquid crystal cell 100a that this has made and the second liquid crystal cell 100b.
First, the step S10-S20 with reference to Fig. 4 is described the first liquid crystal cell formation process.
First, when being cut to one by one, the upper board (the first glass substrate) corresponding with second substrate 20 part is processed into given size (S10).Such as, by thickness be the size that the sheet of glass substrate of 150 μm is processed into 200mm × 200mm.Multiple element can be formed in this sheet of glass substrate.Secondly, electrode is formed in the upper stacked ito film of the medial surface (face of that side of filling liquid crystal) of upper board.At this, carry out the graphical treatment utilizing etching etc., thus each element formed the second transparency electrode 60 and the 3rd transparency electrode 70 and, conductive pattern 92c and 94c(S11 in bight).Then, stacked high resistance membrane (S12) in the ito film of this upper board.And then stacked alignment films thereon, and carry out orientation process (S13).Alignment films is the liquid crystal orientation film of polyimide (PI:polyimide) etc.
In addition, when being cut to one by one, the lower board (second glass substrate) corresponding with first substrate 10 part is processed into given size (S14).Such as, by thickness be the size that the sheet of glass substrate of 150 μm is processed into 200mm × 200mm.Then, in the upper stacked ito film of the medial surface (face of that side of filling liquid crystal) of lower board, electrode (S15) is formed.At this, carry out the graphical treatment utilizing etching etc., thus form common electrode at each element.In addition, formation well heater 80 around common electrode.And then, form conductive pattern 91c and 93c.Then, stacked alignment films in the ito film of this lower board, carries out orientation process (S16).At this, the direction of orientation of alignment films is identical with the direction of orientation of the alignment films of above-mentioned second substrate 20 side.Then, in order to form the territory, liquid crystal filling area for enclosing liquid crystal at each element, the encapsulant 30 being mixed into band gap material (gapmaterial) is printed as ring-type (S17).Thereafter, liquid crystal dripping device is adopted to drip to the inner side of the encapsulant 30 of ring-type liquid crystal 40(S18).
Then, as shown in Fig. 5 (a), overlapping upper board and lower board, assemble with the first liquid crystal cell group of multiple liquid crystal optical devices of matrix shape arrangement thus with substrate (S19).Then, the surface of substrate of grinding the upper side and lower side makes the thickness of the first liquid crystal cell group substrate such as be formed to be about 50 μm (S20).That is, make the substrate of the upper side and lower side thinning, till the line C in Fig. 5 (a).Ginding process adopts Mechanical Method or etching method.Thereby, it is possible to obtain the first liquid crystal cell group substrate that multiple the first liquid crystal cell 100a as shown in Fig. 5 (b) arranges with matrix shape.
Secondly, with reference to the step S21-S31 of Fig. 4, the second liquid crystal cell formation process is described.
First, when being cut to one by one, the upper board (the first glass substrate) corresponding with second substrate 20 part is processed into given size (S21).Such as, by thickness be the size that the sheet of glass substrate of 150 μm is processed into 200mm × 200mm.Multiple element can be formed in this sheet of glass substrate.Then, go up stacked ito film at the medial surface (face of that side of filling liquid crystal) of upper board and form electrode (S22).At this, carry out the graphical treatment utilizing etching etc., thus form the second transparency electrode 60, the 3rd transparency electrode 70, conductive pattern 92c and 94c at each element.Then, stacked high resistance membrane (S23) in the ito film of this upper board.And then stacked alignment films thereon, and carry out orientation process (S24).Alignment films is the liquid crystal orientation film of polyimide (PI:polyimide) etc.
In addition, when being cut to one by one, the lower board (second glass substrate) corresponding with first substrate 10 part is processed into given size (S25).Such as, by thickness be the size that the sheet of glass substrate of 150 μm is processed into 200mm × 200mm.Then, in the upper stacked ito film of the medial surface (face of that side of filling liquid crystal) of lower board, electrode (S26) is formed.At this, carry out the graphical treatment utilizing etching etc., thus form common electrode at each element.In addition, formation well heater 80 around common electrode.And then, form conductive pattern 91c and 93c.Then, stacked alignment films in the ito film of this lower board, carries out orientation process (S27).At this, the direction of orientation of alignment films is identical with the direction of orientation of the alignment films of above-mentioned second substrate 20 side.Then, in order to form the territory, liquid crystal filling area for enclosing liquid crystal at each element, the encapsulant 30 being mixed into band gap material (gapmaterial) is printed as ring-type (S28).Thereafter, liquid crystal dripping device is adopted to drip to the inner side of the encapsulant 30 of ring-type liquid crystal 40(S29).
Then, as shown in Fig. 5 (a), overlapping upper board and lower board, assemble with the first liquid crystal cell group of multiple liquid crystal optical devices of matrix shape arrangement thus with substrate (S30).Then, the surface of substrate of grinding the upper side and lower side makes the thickness of the first liquid crystal cell group substrate such as be formed to be about 50 μm (S31).That is, make the substrate of the upper side and lower side thinning, till the line C in Fig. 5 (a).Ginding process adopts Mechanical Method or etching method.Thereby, it is possible to obtain the first liquid crystal cell group substrate that multiple the second liquid crystal cell 100b as shown in Fig. 5 (b) arranges with matrix shape.
Thereafter, the second liquid crystal cell group that the first liquid crystal cell group arranged with matrix shape by multiple first liquid crystal cell 100a arranges with matrix shape with substrate and multiple second liquid crystal cell 100b is stacked and bond with substrate, makes liquid crystal cell group thus with substrate (S32).Bondd by optical bond.At this, when carrying out stacked, the direction of orientation of the liquid crystal of the first liquid crystal cell 100a and the second liquid crystal cell 100b configures in the mode mutually intersected vertically.
Then, bight (using the position that cutting line intersects as center) the printed conductive patterns shape of each element in the surface of liquid crystal cell group substrate, forms surface terminal portion 91b, 92b, 93b and 94b(S33).Then, by being arranged with the liquid crystal cell group of the multiple liquid crystal cells formed like this with matrix shape by substrate cutting rectangularity shape, the rectangular substrate (S34) that multiple liquid crystal cell is arranged in row is made thus.Further, in the side printed conductive layer of rectangular substrate, side terminal portion 91a, 92a, 93a and 94a(S35 is formed).At the position printing side portion of terminal 91a corresponding to surface terminal portion 91b, 92b, 93b and 94b of being printed in substrate surface, 92a, 93a and 94a.
Cut off with microtome etc. the rectangular substrate formed by aforesaid way, namely each liquid crystal cell is separated into product size (S36).Finally, to each liquid crystal cell be separated, central portion on the lateral surface of the second substrate 20 of the first liquid crystal cell 100a pastes non reflecting film 21, and the central portion on the lateral surface of the first substrate 10 of the second liquid crystal cell 100b pastes non reflecting film 11(S37).By above manufacturing process, the multiplet liquid crystal optical device 100 shown in Fig. 1 can be obtained.In addition, the stickup of non reflecting film 11 and 21 also can be carried out before cutting off separation.
In this wise, the multiplet liquid crystal optical device 100 of the present embodiment by being overlapped each other by the first liquid crystal cell 100a and the second liquid crystal cell 100b and boning and form one, thus is formed in the mode with rectangular shape.First liquid crystal cell 100a and the second liquid crystal cell 100b is processed into thin specific thickness under the state being sealed with liquid crystal.
Thus, with regard to the substrate that is formed with segment electrode and be formed with common electrode substrate with regard to, thin specific thickness is processed under the state being sealed with liquid crystal, namely, due to until the assembling stage of each liquid crystal cell use thicker glass substrate, therefore, it is possible to prevent the distortion (flexure) of substrate when enclosing liquid crystal, and uniform optical characteristics can be obtained.In addition, when carrying out processing to substrate and making it thinning, substrate does not produce flexure, can be processed into smooth face, produces therefore, it is possible to easily a large amount of.In addition, multiple liquid crystal cell through processing thinning after stacked, therefore, it is possible to guarantee sufficient optical range, and can response speed be improved.
The side of multiplet liquid crystal optical device 100 arranging multiple electrode terminal, therefore forming the part of extraction electrode without the need to making the glass substrate of side elongated as prior art, thus the reliability of connection can be guaranteed, and can miniaturization be realized.
The direction of orientation of the liquid crystal of liquid crystal cell stacked mutually configures in orthogonal crossing mode, therefore, it is possible to make the light zero deflection passed through.
In addition, until the assembling stage of each liquid crystal cell uses thicker glass substrate, therefore, it is possible to prevent the distortion of substrate when enclosing liquid crystal, uniform optical characteristics can be obtained.
Fig. 6 represents the structure of the multiplet liquid crystal optical device 200 of second embodiment of the invention, and Fig. 7 represents the section along B-B line of this multiplet liquid crystal optical device 200.In the figure 7, the Reference numeral of each several part of the second liquid crystal cell 200b, the 3rd liquid crystal cell 200c and the 4th liquid crystal cell 200d is eliminated.
As shown in Figure 6 and Figure 7, multiplet liquid crystal optical device 200 is formed as follows: by by stacked to the first liquid crystal cell 200a, the second liquid crystal cell 200b, the 3rd liquid crystal cell 200c and the 4th liquid crystal cell 200d and form one, and have rectangular shape.Central portion on the lateral surface of the second substrate 20 of the first liquid crystal cell 200a is pasted with non reflecting film 21.Central portion on the lateral surface of the first substrate 10 of the 4th liquid crystal cell 200d is pasted with non reflecting film 11.Each liquid crystal cell has the structure identical with the second liquid crystal cell 100b with the first liquid crystal cell 100a of above-mentioned first embodiment.At this, description is omitted.
In addition, except stacked four liquid crystal cells, the manufacture method of multiplet liquid crystal optical device 200 is identical with the manufacture method of above-mentioned multiplet liquid crystal optical device 100.At this, description is omitted.
In this wise, multiplet liquid crystal optical device 200 can obtain the effect identical with above-mentioned multiplet liquid crystal optical device 100, and carry out carrying out stacked after processing makes it thinning thus forming one to four liquid crystal cells, therefore, guarantee response speed, and make optical range become longer, thus can more improve as lens power during liquid crystal lens.
In addition, in above-mentioned embodiment, describe stacked two and four liquid crystal cells and the multiplet liquid crystal optical device formed, but the present invention is not limited thereto.
In addition, in above-mentioned embodiment, each liquid crystal cell of multiplet liquid crystal optical device 100 and 200 is provided with well heater 80, but the present invention is not limited thereto.According to temperature controlled necessity, also well heater 80 can not be set.
In addition, in above-mentioned multiplet liquid crystal optical device 100 and 200, the direction of orientation of the liquid crystal of liquid crystal cell stacked mutually configures in orthogonal crossing mode, but the present invention is not limited thereto.
In addition, in above-mentioned multiplet liquid crystal optical device 100 and 200, liquid crystal cell 100a, 100b, 200a, 200b, 200c and 200d have the liquid crystal layer of one deck respectively, but the present invention is not limited thereto.These liquid crystal layers can also be divided into multiple layer by transparent insulcrete etc.Thereby, it is possible to guarantee the loading of liquid crystal and sufficient optical range.
Utilizability in industry
The present invention can as being built in the ultraminiature camera of mobile phone, PDA(Personal Digital Assistant) or digital equipment etc., having the liquid crystal optical device of automatic focusing function or grand micro-handoff functionality, and use for revising the aberration produced when laser head stores/regenerates and the liquid crystal aberration compensating element used as in optical disc apparatus.
Description of reference numerals
10 first substrates
20 second substrates
30 encapsulants
40 liquid crystal
50 first transparency electrodes
60 second transparency electrodes
70 the 3rd transparency electrodes
80 well heaters
91,92,93,94 electrode terminals
91a, 92a, 93a, 94a side terminal portion
91b, 92b, 93b, 94b surface terminal portion
91c, 92c, 93c, 94c conductive pattern
100,200 multiplet liquid crystal optical devices
100a, 200a first liquid crystal cell
100b, 200b second liquid crystal cell
200c the 3rd liquid crystal cell
200d the 4th liquid crystal cell
Claims (8)
1. a multiplet liquid crystal optical device, described optical element is stacked mutually and form by multiple liquid crystal cell, described liquid crystal cell be formed on medial surface the substrate of segment electrode and medial surface are formed with common electrode substrate between be sealed with liquid crystal,
Be formed with the substrate of described segment electrode and be formed with the substrate of described common electrode, under the state of enclosing described liquid crystal, being processed into thin specific thickness, it is characterized in that,
The side of described multiplet liquid crystal optical device is provided with multiple electrode terminal, and the plurality of electrode terminal possesses: conductive layer, and it is printed in the side of described multiplet liquid crystal optical device; The conductive pattern of regulation area, its be printed in described multiplet liquid crystal optical device above on adjacent corner.
2. multiplet liquid crystal optical device according to claim 1, is characterized in that,
The surrounding of described common electrode is provided with the well heater for heating described liquid crystal layer.
3. the multiplet liquid crystal optical device described in claim 1 or 2, is characterized in that,
The liquid crystal aligning direction of two stacked mutually described liquid crystal cells configures in orthogonal crossing mode.
4. the multiplet liquid crystal optical device described in claim 1 or 2, is characterized in that,
Described liquid crystal is divided into multiple layer by transparent insulcrete.
5. multiplet liquid crystal optical device according to claim 3, is characterized in that,
Described liquid crystal is divided into multiple layer by transparent insulcrete.
6. a manufacture method for multiplet liquid crystal optical device, is characterized in that, comprising:
First electrode forming process, forms segment electrode at first glass substrate that can cut out multiple liquid crystal cell;
Second electrode forming process, forms common electrode at second glass substrate that can cut out multiple liquid crystal cell;
Element group assembling procedure, forming element group substrate, described element group substrate has and is being formed with the described multiple liquid crystal cell enclosing liquid crystal between the first glass substrate of described segment electrode and the second glass substrate being formed with described common electrode;
Slim manufacturing procedure, after assembling procedure, is processed into thin specific thickness by the first glass substrate being formed with described segment electrode with the second glass substrate being formed with described common electrode;
Lamination process, by stacked mutually for the multiple element group substrates thinning through processing;
Cut off operation, stacked multiple described element group substrate cutting is separated into rectangle or single liquid crystal cell;
Side terminal portion formation process, in the side printed conductive layer of described rectangle or single liquid crystal cell, and forms multiple side terminal portion;
Surface terminal portion formation process, described rectangle or single liquid crystal cell surface printing conductive pattern and form multiple surface terminal portion, described multiple surface terminal portion is electrically connected with described multiple side terminal portion and has regulation area respectively.
7. the manufacture method of multiplet liquid crystal optical device according to claim 6, is characterized in that,
The method comprises well heater formation process further, forms the well heater for heating described liquid crystal layer around described common electrode.
8. the manufacture method of the multiplet liquid crystal optical device described in claim 6 or 7, is characterized in that,
In described lamination process, the liquid crystal aligning direction of two stacked mutually described liquid crystal cells configures in orthogonal crossing mode.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010288237A JP5647887B2 (en) | 2010-12-24 | 2010-12-24 | Multi-structure liquid crystal optical element and manufacturing method thereof |
| JP2010-288237 | 2010-12-24 | ||
| PCT/JP2011/074915 WO2012086311A1 (en) | 2010-12-24 | 2011-10-28 | Multiple-structure liquid crystal optical element and process for production thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN103270447A CN103270447A (en) | 2013-08-28 |
| CN103270447B true CN103270447B (en) | 2016-01-20 |
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| CN201180055801.2A Expired - Fee Related CN103270447B (en) | 2010-12-24 | 2011-10-28 | Multiplet liquid crystal optical device and manufacture method thereof |
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| Country | Link |
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| JP (1) | JP5647887B2 (en) |
| CN (1) | CN103270447B (en) |
| WO (1) | WO2012086311A1 (en) |
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| JP2015001698A (en) * | 2013-06-18 | 2015-01-05 | 日本電気硝子株式会社 | Liquid crystal lens |
| US20210389547A1 (en) * | 2018-10-09 | 2021-12-16 | Lg Innotek Co., Ltd | Liquid lens |
| US20220107494A1 (en) * | 2019-02-01 | 2022-04-07 | Albert-Ludwigs-Universitat Freiburg | Refractive wavefront correction device |
| WO2023139904A1 (en) * | 2022-01-20 | 2023-07-27 | 株式会社ジャパンディスプレイ | Optical element |
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| CN1938606A (en) * | 2004-03-31 | 2007-03-28 | 碧理科技有限公司 | Double liquid-crystal aberration correcting element and its manufacturing method |
| CN101636689A (en) * | 2007-03-20 | 2010-01-27 | 富士通株式会社 | Lamination type display element and its manufacturing method |
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| JP2004093887A (en) * | 2002-08-30 | 2004-03-25 | Toshiba Matsushita Display Technology Co Ltd | Display device |
| US20040046705A1 (en) * | 2002-09-20 | 2004-03-11 | Minolta Co., Ltd. | Liquid crystal display apparatus |
| JP4251622B2 (en) * | 2003-06-20 | 2009-04-08 | 東芝松下ディスプレイテクノロジー株式会社 | Liquid crystal display |
| JP4057597B2 (en) * | 2004-08-26 | 2008-03-05 | 独立行政法人科学技術振興機構 | Optical element |
| JP5069850B2 (en) * | 2005-08-30 | 2012-11-07 | シチズンホールディングス株式会社 | Imaging lens and imaging apparatus |
| JP4885577B2 (en) * | 2005-09-21 | 2012-02-29 | シチズンホールディングス株式会社 | Manufacturing method of multi-layer liquid crystal cell |
| JP2007115299A (en) * | 2005-10-18 | 2007-05-10 | Konica Minolta Holdings Inc | Liquid crystal device for optical pickup and optical pickup |
| CN102112907B (en) * | 2008-06-06 | 2014-12-03 | 兰斯维克托公司 | Contact structure for a tunable liquid crystal optical device |
| TW201011392A (en) * | 2008-09-09 | 2010-03-16 | United Radiant Technology Corp | Liquid crystal lens with double layer structure and method of manufacturing the same |
| JP5417005B2 (en) * | 2009-03-26 | 2014-02-12 | パナソニック株式会社 | Lighting device |
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2011
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1938606A (en) * | 2004-03-31 | 2007-03-28 | 碧理科技有限公司 | Double liquid-crystal aberration correcting element and its manufacturing method |
| CN101636689A (en) * | 2007-03-20 | 2010-01-27 | 富士通株式会社 | Lamination type display element and its manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012137536A (en) | 2012-07-19 |
| CN103270447A (en) | 2013-08-28 |
| JP5647887B2 (en) | 2015-01-07 |
| WO2012086311A1 (en) | 2012-06-28 |
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