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EP0332005A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Supertwist liquid-crystal display

Assignee: Merck Patent GmbH
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Filing: 1989-02-27
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Granted: —
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Expires: 2009-02-27
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Abstract

Abstract Translated from German Supertwist-Flüssigkristallanzeigeelemente mit vorzüglicher Kennliniensteilheit werden erhalten, falls die nematische Flüssigkristallmischung folgenden Bedingungen genügt: - nematischer Phasenbereich von mindestens 60 °C, - Viskosität von 30 mPa.s oder darunter, und - Δε/ε ⊥ < 2.0, wobei Δε die dielektrische Aniso­tropie und ε ⊥ die Dielektrizitätskonstante in Richtung der kurzen Achse der Flüssigkristall­moleküle bedeutet. Supertwist liquid crystal display elements with excellent characteristic slope are obtained if the nematic liquid crystal mixture meets the following conditions: - nematic phase range of at least 60 ° C, - viscosity of 30 mPa.s or less, and - Δε / ε ⊥ <2.0, where Δε means the dielectric anisotropy and ε ⊥ the dielectric constant in the direction of the short axis of the liquid crystal molecules .

Inventors

  • 👤 Georg Weber
  • 👤 Herbert Dr. Plach
  • 👤 Volker Reiffenrath
  • 👤 Reinhard Dr. Hittich

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-02 10:43
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/42; C09K19/46; C09K19/02; C09K19/0208; C09K19/06; C09K19/08; C09K19/30; C09K19/3001; C09K19/44

Claims Analysis

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References Cited (Backward Citations)

EP0125563A2 Cited
EP0131216A2 Cited
EP0260450A1 Cited
WO1988007514A1 Cited

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