GB2575591A - Liquid crystal device - Google Patents

Liquid crystal device Download PDF

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Publication number
GB2575591A
GB2575591A GB1915529.0A GB201915529A GB2575591A GB 2575591 A GB2575591 A GB 2575591A GB 201915529 A GB201915529 A GB 201915529A GB 2575591 A GB2575591 A GB 2575591A
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GB
United Kingdom
Prior art keywords
polymer film
electrode structure
electro
liquid crystalline
substrate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB1915529.0A
Other versions
GB201915529D0 (en
GB2575591B (en
Inventor
Liu Danqing
Jan Broer Dirk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Merck Patent GmbH
Original Assignee
Merck Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Merck Patent GmbH filed Critical Merck Patent GmbH
Publication of GB201915529D0 publication Critical patent/GB201915529D0/en
Publication of GB2575591A publication Critical patent/GB2575591A/en
Application granted granted Critical
Publication of GB2575591B publication Critical patent/GB2575591B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
    • C—CHEMISTRY; METALLURGY
    • 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
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K2019/0444—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group
    • C09K2019/0448—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group the end chain group being a polymerizable end group, e.g. -Sp-P or acrylate
    • C—CHEMISTRY; METALLURGY
    • 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
    • C09K2219/00—Aspects relating to the form of the liquid crystal [LC] material, or by the technical area in which LC material are used
    • C—CHEMISTRY; METALLURGY
    • 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
    • C09K2219/00—Aspects relating to the form of the liquid crystal [LC] material, or by the technical area in which LC material are used
    • C09K2219/03—Aspects relating to the form of the liquid crystal [LC] material, or by the technical area in which LC material are used in the form of films, e.g. films after polymerisation of LC precursor

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Geometry (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Substances (AREA)

Abstract

The invention relates to a device comprising at least one substrate, an electrode structure and a liquid crystalline polymer film obtainable from a polymerisable LC medium comprising one or more multi-or direactive or monoreactive mesogenic compounds, characterized in that the surface shape of said polymer film can be electrically switched. Furthermore, the invention relates to a process of production of said device, to the use of said device in an electro-opticalor electro-mechanical device and to an electro-opticalor electro-mechanical device comprising said device.

Claims (18)

Patent Claims
1. Device comprising at least one substrate provided with an electrode structure and a liquid crystalline polymer film obtainable from a polymerisable LC medium comprising one or more multi-, di- or monoreactive mesogenic compounds, characterized in that the surface shape of said polymer film can be electrically switched
2. Device according to claim 1 , wherein the substrate is substantially transparent
3. Device according to claim 1 or 2, wherein the substrate is selected from glass or plastic substrates .
4. Device according to one or more of claims 1 to 3, wherein the electrode structure is selected from an electrode structure, which is capable to allow the application of an electric field, which has at least a substantial component parallel to the substrate main plane or the polymer film.
5. Device according to claim 1 or 4, wherein the electrode structure is an IPS electrode structure.
6. Device according to claim 1 or 5, wherein the multi-, di, or monoreactive mesogenic compounds in the liquid crystalline polymer film are uniformly aligned.
7. Device according to claim 1 or 6, wherein the liquid crystalline polymer film has a dielectric permittivity in the range from 2.5 to 40.
8. Device according to claim 1 or 7, wherein the liquid crystalline polymer film has a thickness in the range from 1 to 10 Î1⁄4Î¹Ï Î¹.
9. Device according to claim 1 or 8, wherein the liquid crystalline polymer film is obtainable from a polymerisable LC medium comprising one or more direactive mesogenic and optionally one more monoreactive mesogenic compounds.
10. Device according to claim 1 or 9, wherein the liquid crystalline polymer film is obtainable from one or more multi-, di- or monoreactive mesogenic compounds having a dipole moment in the range from 2 to 8 Debye.
1 1 . Device according to claim 1 or 10, wherein the applied electric field corresponds to a continuous AC field.
12. Device according to claim 1 or 1 1 , wherein the frequency of the applied electric field is in the range from larger than 500 Hz to less than 1500 Hz.
13. Device according to claim 1 or 12, wherein the applied electric field strength is in the range from 5 to 70 V/Î1⁄4Î¹Ï Î¹.
14. Process for the production of an device according to one or more of claims 1 to 13, comprising the steps of â ¢ providing an electrode structure on the substrate â ¢ providing a layer of a polymerisable LC medium comprising one or more multi-, di-, or monoreactive mesogenic compounds onto the substrate or the electrode structure, and â ¢ irradiating the polymerisable LC medium with actinic radiation.
15. Use of the device according to one or more of claims 1 to 13, for providing a electromechanical effect, which can be sensed by a fingertip or stylus.
16. Use of the device according to one or more of claims 1 to 13, for providing a electro optical effect, which can be seen by a change in reflectivity .
17. Use of the device according to one or more of claims 1 to 13, in an electro-optical device or electro-mechanical device.
18. Electro-optical or electro-mechanical device comprising the device according to one or more of claims 1 to 13.
GB1915529.0A 2017-03-28 2018-02-15 Liquid crystal device Active GB2575591B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP17163357 2017-03-28
PCT/EP2018/053801 WO2018073459A2 (en) 2017-03-28 2018-02-15 Liquid crystal device

Publications (3)

Publication Number Publication Date
GB201915529D0 GB201915529D0 (en) 2019-12-11
GB2575591A true GB2575591A (en) 2020-01-15
GB2575591B GB2575591B (en) 2022-10-19

Family

ID=58488798

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1915529.0A Active GB2575591B (en) 2017-03-28 2018-02-15 Liquid crystal device

Country Status (4)

Country Link
CN (1) CN110462496B (en)
GB (1) GB2575591B (en)
TW (1) TWI780135B (en)
WO (1) WO2018073459A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10901510B2 (en) 2018-10-09 2021-01-26 Microsoft Technology Licensing, Llc Haptic feedback system having two independent actuators

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006002765A1 (en) * 2004-07-07 2006-01-12 Merck Patent Gmbh Biaxial film having local birefringence that varies periodically
WO2011102892A1 (en) * 2010-02-18 2011-08-25 Kent State University Fast-switching surface-stabilized liquid crystal cells
WO2016116254A1 (en) * 2015-01-23 2016-07-28 Merck Patent Gmbh Light modulation element

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Publication number Priority date Publication date Assignee Title
EP0261712A1 (en) 1986-09-04 1988-03-30 Koninklijke Philips Electronics N.V. Picture display cell, method of forming an orientation layer on a substrate of the picture display cell and monomeric compounds for use in the orientation layer
WO1993022397A1 (en) 1992-04-27 1993-11-11 Merck Patent Gmbh Electrooptical liquid crystal system
JP2631177B2 (en) * 1992-07-31 1997-07-16 株式会社パイロット Memory type liquid crystal light control panel
DE4405316A1 (en) 1994-02-19 1995-08-24 Basf Ag New polymerizable liquid crystalline compounds
DE19504224A1 (en) 1994-02-23 1995-08-24 Merck Patent Gmbh Liq. crystalline (LC) material
DE19532408A1 (en) 1995-09-01 1997-03-06 Basf Ag Polymerizable liquid crystalline compounds
TW373100B (en) 1996-07-01 1999-11-01 Merck Patent Gmbh Compensation film and liquid crystal display device containing the same
GB2315072B (en) 1996-07-04 2000-09-13 Merck Patent Gmbh Circular UV polariser
TW373123B (en) 1996-07-26 1999-11-01 Merck Patent Gmbh Combination of optical elements, means to produce substantially linear polarized light, optical retardation film and liquid crystal display device
US6514578B1 (en) 1999-06-30 2003-02-04 Merck Patent Gesellschaft Mit Beschrankter Haftung Polymerizable mesogenic tolanes
US7060200B1 (en) 1999-09-03 2006-06-13 Merck Patent Gmbh Multireactive polymerizable mesogenic compounds
US6912030B1 (en) 1999-09-16 2005-06-28 Merck Patent Gmbh Optical compensator and liquid crystal display I
DE10241301A1 (en) 2002-09-04 2004-03-18 Merck Patent Gmbh Electrooptic light control element and display and medium for television and computer screens has temperature driven control mechanism
US7527746B2 (en) 2005-01-28 2009-05-05 Chisso Corporation Liquid crystal polyfunctional acrylate derivative and polymer thereof
WO2008104533A1 (en) 2007-02-26 2008-09-04 Lachezar Komitov Liquid crystal device
CN102911052B (en) * 2012-10-13 2015-03-25 江苏和成显示科技股份有限公司 Polymerized star compound and polymerized product and application thereof in liquid crystal device
CN104854489B (en) * 2012-12-14 2019-09-17 默克专利股份有限公司 Birefringent RM lens
WO2014094949A1 (en) * 2012-12-21 2014-06-26 Merck Patent Gmbh Reactive mesogens

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006002765A1 (en) * 2004-07-07 2006-01-12 Merck Patent Gmbh Biaxial film having local birefringence that varies periodically
WO2011102892A1 (en) * 2010-02-18 2011-08-25 Kent State University Fast-switching surface-stabilized liquid crystal cells
WO2016116254A1 (en) * 2015-01-23 2016-07-28 Merck Patent Gmbh Light modulation element

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
Danqing Liu Et Al: New insights into photoactivated volume generation boost surface morphing in liquid crystal coatings, Vol 6 No1 *
Qiu Xunlin: Patterned piezo-, pyro-, and ferroelectricity of poled polymer electrets vol 108 no1 1 July 1010 *
Timothy J White El Al: Programmable and adaptive mechanics with liquid crystal polymer networks and elastomers *
Tohru Shiga El Al: Bending of poly(vinyl alcohol)poly(sodium acrylate) composite hydrogel in electric fields, vol 44 no 2, 15 Jan 1992 *

Also Published As

Publication number Publication date
TW201840827A (en) 2018-11-16
TWI780135B (en) 2022-10-11
GB201915529D0 (en) 2019-12-11
CN110462496A (en) 2019-11-15
CN110462496B (en) 2023-06-13
WO2018073459A2 (en) 2018-04-26
GB2575591B (en) 2022-10-19
WO2018073459A3 (en) 2018-06-07

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