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WO1999005646A8 - Chip card with bistable display - Google Patents

Chip card with bistable display

Info

Publication number
WO1999005646A8
WO1999005646A8 PCT/EP1998/004550 EP9804550W WO9905646A8 WO 1999005646 A8 WO1999005646 A8 WO 1999005646A8 EP 9804550 W EP9804550 W EP 9804550W WO 9905646 A8 WO9905646 A8 WO 9905646A8
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
chip card
bistable display
temperature range
crystal layer
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.)
Ceased
Application number
PCT/EP1998/004550
Other languages
German (de)
French (fr)
Other versions
WO1999005646A1 (en
Inventor
Javier Manero
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.)
Aventis Research and Technologies GmbH and Co KG
Original Assignee
Aventis Research and Technologies GmbH and Co KG
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 Aventis Research and Technologies GmbH and Co KG filed Critical Aventis Research and Technologies GmbH and Co KG
Publication of WO1999005646A1 publication Critical patent/WO1999005646A1/en
Publication of WO1999005646A8 publication Critical patent/WO1999005646A8/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07701—Constructional details, e.g. mounting of circuits in the carrier the record carrier comprising an interface suitable for human interaction
    • G06K19/07703—Constructional details, e.g. mounting of circuits in the carrier the record carrier comprising an interface suitable for human interaction the interface being visual
    • 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
    • C09K19/02—Liquid crystal materials characterised by optical, electrical or physical properties of the components, in general
    • C09K19/0225—Ferroelectric
    • 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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/141—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent using ferroelectric liquid crystals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Organic Chemistry (AREA)
  • Theoretical Computer Science (AREA)
  • Materials Engineering (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal Substances (AREA)
  • Liquid Crystal (AREA)

Abstract

A chip card containing a ferroelectric liquid crystal display with a ferroelectric liquid crystal layer is characterised in that the liquid crystal layer consists of a low-molecular liquid crystal with a higher-order, inclined smectic phase in the working temperature range. The display used according to the invention can be switched at voltages ≤15 V, in general ≤5 V, can be written in a wide temperature range and withstands everyday stresses such as pressure, bending, deformation or extreme temperatures.
PCT/EP1998/004550 1997-07-25 1998-07-21 Chip card with bistable display Ceased WO1999005646A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997132158 DE19732158A1 (en) 1997-07-25 1997-07-25 Chip card with bistable display
DE19732158.5 1997-07-25

Publications (2)

Publication Number Publication Date
WO1999005646A1 WO1999005646A1 (en) 1999-02-04
WO1999005646A8 true WO1999005646A8 (en) 1999-04-01

Family

ID=7836946

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/004550 Ceased WO1999005646A1 (en) 1997-07-25 1998-07-21 Chip card with bistable display

Country Status (2)

Country Link
DE (1) DE19732158A1 (en)
WO (1) WO1999005646A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6864875B2 (en) 1998-04-10 2005-03-08 E Ink Corporation Full color reflective display with multichromatic sub-pixels
US7167155B1 (en) 1995-07-20 2007-01-23 E Ink Corporation Color electrophoretic displays

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970000278B1 (en) * 1987-05-09 1997-01-08 가부시끼가이샤 한도다이 에네르기 겐뀨쇼 Card-type memory devices
JPH0395174A (en) * 1989-06-28 1991-04-19 Mitsubishi Rayon Co Ltd Optically active compound and liquid crystal composition therefrom
FR2731537B1 (en) * 1995-03-07 1997-04-11 Gemplus Card Int CHIP CARD WITH DISPLAY DEVICE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7167155B1 (en) 1995-07-20 2007-01-23 E Ink Corporation Color electrophoretic displays
US6864875B2 (en) 1998-04-10 2005-03-08 E Ink Corporation Full color reflective display with multichromatic sub-pixels

Also Published As

Publication number Publication date
WO1999005646A1 (en) 1999-02-04
DE19732158A1 (en) 1999-01-28

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DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase