WO2013118525A1 - 液晶レンズ及び液晶レンズ用セル - Google Patents
液晶レンズ及び液晶レンズ用セル Download PDFInfo
- Publication number
- WO2013118525A1 WO2013118525A1 PCT/JP2013/050197 JP2013050197W WO2013118525A1 WO 2013118525 A1 WO2013118525 A1 WO 2013118525A1 JP 2013050197 W JP2013050197 W JP 2013050197W WO 2013118525 A1 WO2013118525 A1 WO 2013118525A1
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- WIPO (PCT)
- Prior art keywords
- liquid crystal
- electrode portion
- electrode
- width
- opening
- Prior art date
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Classifications
-
- 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
-
- 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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
-
- 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
-
- 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
-
- 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
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
- G02F2201/122—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode having a particular pattern
Definitions
- the present invention relates to a liquid crystal lens and a cell for a liquid crystal lens.
- liquid crystal lenses as described in Patent Document 1 and the like.
- the optical power can be changed by changing the voltage applied to the liquid crystal layer and changing the refractive index of the liquid crystal layer. For this reason, by using a liquid crystal lens, the optical system can be made compact or highly functional.
- An object of the present invention is to provide a liquid crystal lens having a small wavefront aberration.
- the liquid crystal lens according to the present invention includes a liquid crystal layer, a first electrode, a second electrode, and a third electrode.
- the first electrode is provided on one side of the liquid crystal layer.
- the first electrode has an opening and a communication port that communicates the opening with the outside.
- the second electrode has a main electrode portion and a linear lead electrode portion.
- the main electrode portion is disposed in the opening on one side of the liquid crystal layer.
- the main electrode portion is electrically insulated from the first electrode.
- the lead electrode portion is electrically connected to the main electrode portion.
- the extraction electrode portion is provided in the communication port.
- the third electrode is provided on the other side of the liquid crystal layer.
- the third electrode is opposed to at least a part of the first and second electrodes.
- the width of the connection portion between the lead electrode portion and the main electrode portion is 70 ⁇ m or less.
- the width of the connection portion between the lead electrode portion and the main electrode portion is preferably 50 ⁇ m or less.
- the opening is circular and the main electrode portion is circular with a smaller diameter than the opening.
- the width of the connecting portion with the opening of the communication port is preferably 150 ⁇ m or less.
- the width of the connecting portion with the opening of the communication port is preferably 20 ⁇ m or more larger than the width of the connecting portion with the main electrode portion of the extraction electrode portion.
- the cell for a liquid crystal lens includes a cell body, a first electrode, a second electrode, and a third electrode.
- the cell body has an internal space into which liquid crystal is injected.
- the first electrode is provided on one side of the internal space.
- the first electrode has an opening and a communication port that communicates the opening with the outside.
- the second electrode is disposed in the opening on one side of the internal space.
- the second electrode has a main electrode portion and a linear lead electrode portion.
- the main electrode portion is electrically insulated from the first electrode.
- the lead electrode portion is electrically connected to the main electrode portion.
- the extraction electrode portion is provided in the communication port.
- the third electrode is provided on the other side of the internal space.
- the third electrode is opposed to at least a part of the first and second electrodes.
- the width of the connection portion between the extraction electrode portion and the main electrode portion is 70 ⁇ m or less.
- a liquid crystal lens having a small wavefront aberration can be provided.
- FIG. 1 is a schematic cross-sectional view of a liquid crystal lens according to an embodiment of the present invention.
- FIG. 2 is a schematic plan view of the first and second electrodes in an embodiment of the present invention.
- FIG. 3 is a graph showing the phase difference when the width of the connection portion between the lead electrode portion and the main electrode portion is 50 ⁇ m.
- FIG. 4 is a photograph of wavefront aberration when the width of the connection portion between the extraction electrode portion and the main electrode portion is 50 ⁇ m.
- FIG. 5 is a graph showing the phase difference when the width of the connection portion between the lead electrode portion and the main electrode portion is 60 ⁇ m.
- FIG. 6 is a graph showing the phase difference when the width of the connection portion between the extraction electrode portion and the main electrode portion is 70 ⁇ m.
- FIG. 1 is a schematic cross-sectional view of a liquid crystal lens according to an embodiment of the present invention.
- FIG. 2 is a schematic plan view of the first and second electrodes in an embodiment of the present invention.
- FIG. 7 is a graph showing the phase difference when the width of the connection portion between the lead electrode portion and the main electrode portion is 80 ⁇ m.
- FIG. 8 is a graph showing the phase difference when the width of the connection portion between the lead electrode portion and the main electrode portion is 90 ⁇ m.
- FIG. 9 is a graph showing the phase difference when the width of the connection portion between the lead electrode portion and the main electrode portion is 100 ⁇ m.
- FIG. 10 is a photograph of wavefront aberration when the width of the connection portion between the extraction electrode portion and the main electrode portion is 100 ⁇ m.
- FIG. 1 shows a schematic cross-sectional view of the liquid crystal lens 1 of the present embodiment.
- the liquid crystal lens 1 includes an element body (cell body) 10.
- the element body 10 and first to third electrodes 21 to 23 described later constitute a liquid crystal lens cell.
- the element body 10 includes a first main wall portion 10a, a second main wall portion 10b, and a side wall portion 10c.
- a cylindrical internal space 10d is formed by the first and second main wall portions 10a and 10b and the side wall portion 10c.
- Liquid crystal is injected into the internal space 10 d to form the liquid crystal lens 1.
- Liquid crystal injection holes for injecting liquid crystal into the internal space 10d may be provided in the main wall portions 10a and 10b, or may be provided in the side wall portion 10c.
- a liquid crystal layer 11 is provided in the internal space 10 d of the liquid crystal lens 1.
- the liquid crystal layer 11 may be divided into a plurality along the thickness direction z by an intermediate plate made of, for example, glass.
- a communication port for communicating a plurality of liquid crystal layers may be provided in the intermediate plate.
- the liquid crystal layer 11 is sandwiched between the first and second electrodes 21 and 22 provided on one side in the thickness direction z and the third electrode 23 provided on the other side in the thickness direction z.
- the first and second electrodes 21 and 22 are disposed on the main surface of the first main wall portion 10a on the liquid crystal layer 11 side.
- An alignment film (not shown) is provided on the main surface of the first main wall 10a on the liquid crystal layer 11 side so as to cover the first and second electrodes 21 and 22.
- the third electrode 23 is disposed on the main surface of the second main wall 10b on the liquid crystal layer 11 side.
- the third electrode 23 is provided to face at least a part of the first and second electrodes 21 and 22 in the thickness direction z.
- the third electrode 23 is provided so as to face the entire first and second electrodes 21 and 22 in the thickness direction z.
- An alignment film (not shown) is provided on the main surface of the second main wall portion 10b on the liquid crystal layer 11 side so as to cover the third electrode 23.
- the voltage V ⁇ b> 1 is applied between the first electrode 21 and the third electrode 23, and the voltage V ⁇ b> 2 is applied between the second electrode 22 and the third electrode 23.
- the alignment of the liquid crystal molecules contained in the liquid crystal layer 11 changes.
- the optical power of the liquid crystal lens 1 changes.
- FIG. 2 shows a schematic plan view of the first and second electrodes in the present embodiment.
- the configuration of the first and second electrodes 21 and 22 will be described in detail with reference mainly to FIG.
- the first electrode 21 has an opening 21a and a communication port 21b.
- the opening 21a is circular.
- the communication port 21 b allows the opening 21 a to communicate with the outside of the first electrode 21. That is, the communication port 21 b connects the opening 21 a and the outer periphery of the first electrode 21.
- the communication port 21b is provided linearly. However, the present invention is not limited to this configuration.
- the communication port 21b may be provided in a curved shape, for example.
- the second electrode 22 has a main electrode portion 22a and a lead electrode portion 22b.
- the main electrode portion 22a is provided in the opening 21a.
- the main electrode portion 22a is electrically insulated from the first electrode 21.
- the main electrode portion 22a is circular.
- the main electrode portion 22a is circular with a diameter smaller than that of the opening 21a.
- the diameter of the main electrode portion 22a can be, for example, about 0.1 mm to 30 mm.
- the lead electrode portion 22b is electrically connected to the main electrode portion 22a.
- the extraction electrode portion 22b and the first electrode 21 are electrically insulated.
- the lead electrode portion 22b is provided in the communication port 21b.
- the lead electrode portion 22b extends linearly from the main electrode portion 22a toward the outside.
- the lead electrode portion 22 b reaches the outer periphery of the first electrode 21.
- the extraction electrode portion 22b is provided in a straight line.
- the lead electrode portion 22b may be provided in a curved shape, for example.
- the width W1 of the connection portion between the lead electrode portion 22b and the main electrode portion 22a is 70 ⁇ m or less, and more preferably 50 ⁇ m or less.
- Ratio of the width W1 of the connection portion of the lead electrode portion 22b to the main electrode portion 22a with respect to the diameter of the main electrode portion 22a ((ratio of the width W1 of the connection portion of the lead electrode portion 22b to the main electrode portion 22a) / (main electrode) The diameter of the portion 22a)) is preferably 0.023 or less, and more preferably 0.017 or less.
- the width W2 of the connection portion between the communication port 21b and the opening 21a is preferably 150 ⁇ m or less, more preferably 110 ⁇ m or less, and even more preferably 100 ⁇ m or less.
- the width W2 of the connection portion with the opening 21a of the communication port 21b may be 20 ⁇ m or more larger than the width W1 of the connection portion with the main electrode portion 22a of the extraction electrode portion 22b. preferable.
- the width W1 of the connection portion between the lead electrode portion 22b and the main electrode portion 22a is 70 ⁇ m or less. For this reason, in the liquid crystal lens 1, the wavefront aberration is small.
- the reason why the wavefront aberration can be reduced by setting the width W1 of the connection portion between the lead electrode portion 22b and the main electrode portion 22a to 70 ⁇ m or less is not certain, but the following reasons are conceivable.
- the shape of the second electrode 22 is not point-symmetric.
- the extraction electrode portion 22b is sufficiently thin, it is considered that the deterioration of the point symmetry of the generated lines of electric force is suppressed, and as a result, a small wavefront aberration is realized.
- the width W1 of the connection portion between the lead electrode portion 22b and the main electrode portion 22a is 50 ⁇ m or less.
- the width W2 of the connection portion between the communication port 21b and the opening 21a is preferably 150 ⁇ m or less, more preferably 110 ⁇ m or less, and even more preferably 100 ⁇ m or less.
- FIG. 3 is a graph showing the phase difference when the width of the extraction electrode portion 22b is 50 ⁇ m.
- FIG. 4 is a photograph of wavefront aberration when the width of the extraction electrode portion 22b is 50 ⁇ m.
- FIG. 5 is a graph showing the phase difference when the width of the extraction electrode portion 22b is 60 ⁇ m.
- FIG. 6 is a graph showing the phase difference when the width of the extraction electrode portion 22b is 70 ⁇ m.
- FIG. 7 is a graph showing the phase difference when the width of the extraction electrode portion 22b is 80 ⁇ m.
- FIG. 8 is a graph showing the phase difference when the width of the extraction electrode portion 22b is 90 ⁇ m.
- FIG. 9 is a graph showing the phase difference when the width of the extraction electrode portion 22b is 100 ⁇ m.
- FIG. 10 is a photograph of wavefront aberration when the width of the extraction electrode portion 22b is 100 ⁇ m.
- the horizontal axis is the distance from the optical axis C
- the vertical axis is the phase difference from the optical axis C.
- the data represented by the squares are phase differences along the direction D1 (the direction from the optical axis C toward the center in the radial direction of the extraction electrode portion 22b) shown in FIG.
- the data represented by rhombuses is data representing the phase difference along the D2 direction that is 180 ° different from the D1 direction.
- the planar shape of the main electrode portion is a circle having a radius of 1.5 mm.
- the width of the connection portion of the extraction electrode portion to the main electrode portion is 50 ⁇ m
- the direction in which the extraction electrode is provided in the peripheral portion as well as the central portion, and the extraction electrode It can be seen that the phase difference is substantially equal to the direction in which no is provided. From this result, it can be seen that the wavefront aberration can be further effectively improved by setting the width of the connection portion between the extraction electrode portion and the main electrode portion to 50 ⁇ m or less.
- the width of the connection portion between the lead electrode portion 22b and the main electrode portion 22a may be different from the width of the portion other than the connection portion.
- the width of the portion other than the connection portion may be larger than the width of the connection portion between the extraction electrode portion 22b and the main electrode portion 22a.
- the width of the communication port 21b is not necessarily constant.
- the width of the connection portion with the opening 21a of the communication port 21b may be different from the width of the portion other than the connection portion.
- the width of the portion other than the connection portion may be larger than the width of the connection portion with the opening 21a of the communication port 21b.
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Geometry (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
Abstract
Description
10…素子本体
10a…第1の主壁部
10b…第2の主壁部
10c…側壁部
10d…内部空間
11…液晶層
21…第1の電極
21a…開口
21b…連通口
22…第2の電極
22a…主電極部
22b…引き出し電極部
23…第3の電極
Claims (6)
- 液晶層と、
前記液晶層の一方側に設けられており、開口と、前記開口を外部に連通させる連通口とが形成された第1の電極と、
前記液晶層の一方側において、前記開口内に配されており、前記第1の電極とは電気的に絶縁された主電極部と、前記主電極部に電気的に接続されており、前記連通口内に設けられた線状の引き出し電極部とを有する第2の電極と、
前記液晶層の他方側に設けられており、前記第1及び第2の電極の少なくとも一部と対向する第3の電極と、
を備え、
前記引き出し電極部の前記主電極部との接続部の幅が70μm以下である、液晶レンズ。 - 前記引き出し電極部の前記主電極部との接続部の幅が50μm以下である、請求項1に記載の液晶レンズ。
- 前記開口が円形であり、前記主電極部が前記開口よりも直径が小さい円形である、請求項1または2に記載の液晶レンズ。
- 前記連通口の前記開口との接続部の幅が、150μm以下である、請求項1~3のいずれか一項に記載の液晶レンズ。
- 前記連通口の前記開口との接続部の幅が、前記引き出し電極部の前記主電極部との接続部の幅よりも20μm以上大きい、請求項4に記載の液晶レンズ。
- 液晶が注入される内部空間を有するセル本体と、
前記内部空間の一方側に設けられており、開口と、前記開口を外部に連通させる連通口とが形成された第1の電極と、
前記内部空間の一方側において、前記開口内に配されており、前記第1の電極とは電気的に絶縁された主電極部と、前記主電極部に電気的に接続されており、前記連通口内に設けられた線状の引き出し電極部とを有する第2の電極と、
前記内部空間の他方側に設けられており、前記第1及び第2の電極の少なくとも一部と対向する第3の電極と、
を備え、
前記引き出し電極部の前記主電極部との接続部の幅が70μm以下である、液晶レンズ用セル。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380008962.5A CN104105998B (zh) | 2012-02-10 | 2013-01-09 | 液晶透镜和液晶透镜用晶胞 |
KR1020147016616A KR20140128295A (ko) | 2012-02-10 | 2013-01-09 | 액정 렌즈 및 액정 렌즈용 셀 |
US14/373,950 US9720144B2 (en) | 2012-02-10 | 2013-01-09 | Liquid crystal lens and cell for liquid crystal lens |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012026826 | 2012-02-10 | ||
JP2012-026826 | 2012-02-10 |
Publications (1)
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WO2013118525A1 true WO2013118525A1 (ja) | 2013-08-15 |
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ID=48947294
Family Applications (1)
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PCT/JP2013/050197 WO2013118525A1 (ja) | 2012-02-10 | 2013-01-09 | 液晶レンズ及び液晶レンズ用セル |
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US (1) | US9720144B2 (ja) |
JP (1) | JP2013178494A (ja) |
KR (1) | KR20140128295A (ja) |
CN (1) | CN104105998B (ja) |
TW (1) | TWI578025B (ja) |
WO (1) | WO2013118525A1 (ja) |
Families Citing this family (1)
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TWI490591B (zh) | 2014-04-11 | 2015-07-01 | Silicon Touch Tech Inc | 液晶透鏡結構 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004101885A (ja) * | 2002-09-10 | 2004-04-02 | Pioneer Electronic Corp | 液晶レンズ並びにその駆動方法及び装置 |
JP2006012344A (ja) * | 2004-06-29 | 2006-01-12 | Citizen Seimitsu Co Ltd | 光ピックアップ装置 |
JP2011180373A (ja) * | 2010-03-01 | 2011-09-15 | Akita Prefecture | 低電圧駆動液晶レンズ |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH10112058A (ja) | 1996-10-08 | 1998-04-28 | Asahi Glass Co Ltd | 光ヘッド装置 |
JP2004110959A (ja) | 2002-09-19 | 2004-04-08 | Asahi Glass Co Ltd | 光ヘッド装置 |
WO2006009176A1 (ja) | 2004-07-20 | 2006-01-26 | Asahi Glass Company, Limited | 液晶レンズ素子および光ヘッド装置 |
CA2586235C (en) | 2004-11-02 | 2014-06-03 | E-Vision, Llc | Electro-active spectacles and method of fabricating same |
CN101088041A (zh) | 2004-11-02 | 2007-12-12 | E-视觉有限公司 | 电激活眼镜及其制造方法 |
CN101630105B (zh) * | 2008-07-15 | 2011-10-12 | 比亚迪股份有限公司 | 一种液晶变焦透镜及电子装置 |
JP2010055666A (ja) | 2008-08-27 | 2010-03-11 | Hitachi Maxell Ltd | 液晶素子及び光ピックアップ光学系 |
JP5334116B2 (ja) | 2009-07-07 | 2013-11-06 | 秋田県 | 低電圧駆動液晶レンズ |
-
2013
- 2013-01-09 WO PCT/JP2013/050197 patent/WO2013118525A1/ja active Application Filing
- 2013-01-09 KR KR1020147016616A patent/KR20140128295A/ko not_active Application Discontinuation
- 2013-01-09 CN CN201380008962.5A patent/CN104105998B/zh not_active Expired - Fee Related
- 2013-01-09 US US14/373,950 patent/US9720144B2/en not_active Expired - Fee Related
- 2013-01-11 JP JP2013003023A patent/JP2013178494A/ja active Pending
- 2013-01-30 TW TW102103561A patent/TWI578025B/zh not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004101885A (ja) * | 2002-09-10 | 2004-04-02 | Pioneer Electronic Corp | 液晶レンズ並びにその駆動方法及び装置 |
JP2006012344A (ja) * | 2004-06-29 | 2006-01-12 | Citizen Seimitsu Co Ltd | 光ピックアップ装置 |
JP2011180373A (ja) * | 2010-03-01 | 2011-09-15 | Akita Prefecture | 低電圧駆動液晶レンズ |
Also Published As
Publication number | Publication date |
---|---|
US20150268387A1 (en) | 2015-09-24 |
CN104105998A (zh) | 2014-10-15 |
CN104105998B (zh) | 2016-09-07 |
TWI578025B (zh) | 2017-04-11 |
TW201344249A (zh) | 2013-11-01 |
JP2013178494A (ja) | 2013-09-09 |
KR20140128295A (ko) | 2014-11-05 |
US9720144B2 (en) | 2017-08-01 |
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