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Ferroelectric liquid-crystal cell

Assignee: Rolic Technologies Ltd
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Filing: 1988-09-06
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Granted: —
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Expires: 2008-09-06
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Abstract

Abstract Translated from German Flüssigkristallanzeigezelle mit einem chiralen ferroelektrischen smektischen Flüssigkristall zwischen zwei transparenten Platten, mit Elektroden zur Erzeugung eines elektrischen Feldes und Polarisatoren vor und hinter dem Flüssigkristall, wobei das Verhältnis d/p der Dicke d der Flüssigkristallschicht zur Ganghöhe p der schraubenförmigen Verdrillung grösser ist als 5, der smektische Kippwinkel ϑo zwischen 22,5° und 50° liegt und das Produkt d·ϑo<2>·Δn·1/λ (Phasenfaktor) aus der Dicke d, dem Quadrat des Kippwinkels ϑo, dem Wert der Doppelbrechung Δn und dem Reziprokwert der Lichtwellenlänge λ grösser ist als 0,45 µm. Liquid crystal display cell with a chiral ferroelectric smectic liquid crystal between two transparent plates, with electrodes for generating an electric field and polarizers in front of and behind the liquid crystal, the ratio d / p of the thickness d of the liquid crystal layer to the pitch p of the helical twist being greater than 5 smectic tilt angle ϑo is between 22.5 ° and 50 ° and the product d · ϑo <2> · Δn · 1 / λ (phase factor) from the thickness d, the square of the tilt angle ϑo, the value of the birefringence Δn and the reciprocal of Light wavelength λ is greater than 0.45 µm.

Inventors

  • 👤 Leonid Alexeevich Dr. Beresnev
  • 👤 Nina Ivanovna Dr. Chernova
  • 👤 Vladimir Grigorievich Dr. Chigrinov
  • 👤 Dmitry Ivanovich Dr. Dergachev
  • 👤 Alexander Vasilievich Prof. Dr. Ivashchenko
  • 👤 Marina Vasilievna Dr. Loseva
  • 👤 Boris Isaakovich Dr. Ostrovskiy
  • 👤 Evgeniy Pavlovich Dr. Pozhidaev
  • 👤 Arnold Zinovievich Dr. Rabinovich
  • 👤 Martin Dr. Schadt
  • 👤 Victor Vasilievich Prof. Dr. Titov

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-01 09:59
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/02; C09K19/0225; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/12; C09K19/126; C09K19/34; C09K19/3441; C09K19/345; C09K19/3458; C09K19/52; C09K19/58; C09K19/586; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/137; G02F1/139; G02F1/141; C09K2019/121; C09K2019/123

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