JP4064329B2 - 液晶の粘性係数の測定方法および装置 - Google Patents
液晶の粘性係数の測定方法および装置 Download PDFInfo
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- JP4064329B2 JP4064329B2 JP2003351688A JP2003351688A JP4064329B2 JP 4064329 B2 JP4064329 B2 JP 4064329B2 JP 2003351688 A JP2003351688 A JP 2003351688A JP 2003351688 A JP2003351688 A JP 2003351688A JP 4064329 B2 JP4064329 B2 JP 4064329B2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/02—Liquid crystal materials characterised by optical, electrical or physical properties of the components, in general
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/59—Transmissivity
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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
- G02F1/0009—Materials therefor
- G02F1/0072—Mechanical, acoustic, electro-elastic, magneto-elastic properties
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N2011/006—Determining flow properties indirectly by measuring other parameters of the system
- G01N2011/0066—Determining flow properties indirectly by measuring other parameters of the system electrical properties
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N2011/006—Determining flow properties indirectly by measuring other parameters of the system
- G01N2011/0073—Determining flow properties indirectly by measuring other parameters of the system acoustic properties
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- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
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Description
S.Onda, T.Miyashita, T.Uchida: Asia Display 98 Proceedings(1998)p.1055 F.M.Leslie: Quart.J.Mech,Appl.Math.,19(1966)p.357 F.M.Leslie: Liquid Crystals(1968)p.365 J.L.Ericksen: Mol.Cryst.Liq.Cryst.(1969)p.153 C.Z.van Doorn: J.of Applied Physics,46,9(1975)p.3738 O.Cossalter, B.Carmer, D.A.Mlynsky: J.of Physics 2,At.Mol.Cluster Phys.Chem.Phys.Mech.Hydrodyn.Vol.6,No.12(1996)pp.1663-1669 K.Skarp, S.T.Lagerwall, B.Stebler: "Measurement of hydrodynamic parameters for nematic 5CB",Molecular Crystal Liquid Crystal,Vol.60(1980)pp.215-236
(1)応答特性のエリクセン-レスリー理論値と実測値とのフィッティングにより粘性係数の値を決定する液晶の粘性係数の測定方法において、ホモジニアス配向の液晶セルを測定対象として、まずオン応答特性を測定しその結果から回転粘性係数γ1の値を決定し、次いでオフ応答特性を測定しその結果からミーソヴィッツのずれ粘性係数η1、η2の値を決定することを特徴とする液晶の粘性係数の測定方法。
(2)応答特性のエリクセン-レスリー理論値と実測値とのフィッティングにより粘性係数の値を決定する液晶の粘性係数の測定装置であって、液晶セルを照射する光源と、前記液晶セルへの印加電圧値を高低2値の双方向に切替え可能な電圧源と、前記光源から出て前記液晶セルを透過した光の透過率データを、前記電圧源の切替え時点から100μs以下の時間間隔で採取可能な透過率測定器と、前記電圧源の切替え方向が高方向のときの前記透過率測定器の採取データに、回転粘性係数γ1を種々変えて計算した前記理論値をフィッティングさせてγ1の値を決定し、かつ前記電圧源の切替え方向が低方向のときの前記透過率の採取データに、ミーソヴィッツのずれ粘性係数η1およびη2を種々変えγ1は前記決定した値に固定して計算した前記理論値をフィッティングさせてη1、η2の値を決定する演算を実行可能な演算器とを具備したことを特徴とする液晶の粘性係数の測定装置。
2 電圧源
3 透過率測定器
4 演算器
10 液晶セル
11、12 偏光子
Claims (2)
- 応答特性のエリクセン-レスリー理論値と実測値とのフィッティングにより粘性係数の値を決定する液晶の粘性係数の測定方法において、ホモジニアス配向の液晶セルを測定対象として、まずオン応答特性を測定しその結果から回転粘性係数γ1の値を決定し、次いでオフ応答特性を測定しその結果からミーソヴィッツのずれ粘性係数η1、η2の値を決定することを特徴とする液晶の粘性係数の測定方法。
- 応答特性のエリクセン-レスリー理論値と実測値とのフィッティングにより粘性係数の値を決定する液晶の粘性係数の測定装置であって、液晶セルを照射する光源と、前記液晶セルへの印加電圧値を高低2値の双方向に切替え可能な電圧源と、前記光源から出て前記液晶セルを透過した光の透過率データを、前記電圧源の切替え時点から100μs以下の時間間隔で採取可能な透過率測定器と、前記電圧源の切替え方向が高方向のときの前記透過率測定器の採取データに、回転粘性係数γ1を種々変えて計算した前記理論値をフィッティングさせてγ1の値を決定し、かつ前記電圧源の切替え方向が低方向のときの前記透過率の採取データに、ミーソヴィッツのずれ粘性係数η1およびη2を種々変えγ1は前記決定した値に固定して計算した前記理論値をフィッティングさせてη1、η2の値を決定する演算を実行可能な演算器とを具備したことを特徴とする液晶の粘性係数の測定装置。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003351688A JP4064329B2 (ja) | 2003-10-10 | 2003-10-10 | 液晶の粘性係数の測定方法および装置 |
KR1020057021413A KR100662968B1 (ko) | 2003-10-10 | 2004-10-05 | 액정의 점성계수의 측정 방법 및 장치 |
EP04792038A EP1672350A4 (en) | 2003-10-10 | 2004-10-05 | MEASURING METHOD AND DEVICE FOR LIQUID CRYSTAL VISCOSITY COEFFICIENT |
US10/553,180 US7389677B2 (en) | 2003-10-10 | 2004-10-05 | Measuring method and device for liquid crystal viscosity coefficient |
CNB2004800115758A CN100487420C (zh) | 2003-10-10 | 2004-10-05 | 液晶粘性系数的测量方法及其装置 |
PCT/JP2004/014627 WO2005036137A1 (ja) | 2003-10-10 | 2004-10-05 | 液晶の粘性係数の測定方法および装置 |
TW093130641A TW200519370A (en) | 2003-10-10 | 2004-10-08 | Method and device for measuring coefficient of viscosity of liquid crystal |
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JP2003351688A JP4064329B2 (ja) | 2003-10-10 | 2003-10-10 | 液晶の粘性係数の測定方法および装置 |
Publications (2)
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JP2005114647A JP2005114647A (ja) | 2005-04-28 |
JP4064329B2 true JP4064329B2 (ja) | 2008-03-19 |
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JP2003351688A Expired - Fee Related JP4064329B2 (ja) | 2003-10-10 | 2003-10-10 | 液晶の粘性係数の測定方法および装置 |
Country Status (7)
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US (1) | US7389677B2 (ja) |
EP (1) | EP1672350A4 (ja) |
JP (1) | JP4064329B2 (ja) |
KR (1) | KR100662968B1 (ja) |
CN (1) | CN100487420C (ja) |
TW (1) | TW200519370A (ja) |
WO (1) | WO2005036137A1 (ja) |
Families Citing this family (4)
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JP4528992B2 (ja) * | 2005-06-21 | 2010-08-25 | 国立大学法人東北大学 | 液晶の粘性係数測定方法及び装置 |
JP5805566B2 (ja) * | 2012-03-22 | 2015-11-04 | セイコーインスツル株式会社 | バリア液晶装置及び立体画像表示装置 |
CN104777075B (zh) * | 2015-04-16 | 2017-11-21 | 广州惠利电子材料有限公司 | 胶黏剂初始混合粘度的测试方法 |
US10191309B2 (en) | 2015-08-07 | 2019-01-29 | Instec, Inc. | Measurement techniques for liquid crystal parameters including twist elastic constant without light measurement |
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JP3504159B2 (ja) * | 1997-10-16 | 2004-03-08 | 株式会社東芝 | 液晶光学スイッチ素子 |
GB2354833A (en) * | 1999-09-28 | 2001-04-04 | Sharp Lab Of Europ Ltd | Liquid crystal device |
KR100623990B1 (ko) * | 2000-07-27 | 2006-09-13 | 삼성전자주식회사 | 액정 표시 장치 및 이의 구동 방법 |
JP4095351B2 (ja) * | 2002-06-13 | 2008-06-04 | チッソ株式会社 | 液晶の粘性係数の測定方法ならびに測定装置 |
JP4125182B2 (ja) * | 2002-08-22 | 2008-07-30 | シャープ株式会社 | 液晶表示素子、投射型液晶表示装置、画像シフト素子および画像表示装置 |
US7084939B2 (en) * | 2002-10-16 | 2006-08-01 | Nitto Denko Corporation | Normally white, supertwist nematic liquid crystal display of reflective type |
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2003
- 2003-10-10 JP JP2003351688A patent/JP4064329B2/ja not_active Expired - Fee Related
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2004
- 2004-10-05 US US10/553,180 patent/US7389677B2/en not_active Expired - Fee Related
- 2004-10-05 KR KR1020057021413A patent/KR100662968B1/ko not_active IP Right Cessation
- 2004-10-05 CN CNB2004800115758A patent/CN100487420C/zh not_active Expired - Fee Related
- 2004-10-05 EP EP04792038A patent/EP1672350A4/en not_active Withdrawn
- 2004-10-05 WO PCT/JP2004/014627 patent/WO2005036137A1/ja active IP Right Grant
- 2004-10-08 TW TW093130641A patent/TW200519370A/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CN100487420C (zh) | 2009-05-13 |
TWI298786B (ja) | 2008-07-11 |
US20060272395A1 (en) | 2006-12-07 |
US7389677B2 (en) | 2008-06-24 |
TW200519370A (en) | 2005-06-16 |
KR20060055455A (ko) | 2006-05-23 |
WO2005036137A1 (ja) | 2005-04-21 |
EP1672350A1 (en) | 2006-06-21 |
KR100662968B1 (ko) | 2006-12-28 |
EP1672350A4 (en) | 2008-07-02 |
JP2005114647A (ja) | 2005-04-28 |
CN1781016A (zh) | 2006-05-31 |
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