LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL SHUTTER

PROBLEM TO BE SOLVED: To provide a liquid crystal which can eliminate or reduce the temperature dependency of switching characteristics, and to provide a liquid crystal shutter. SOLUTION: This liquid crystal composition comprises a host substance which can exhibit a smectic C phase, and a chiral dop...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	RACHEL PATRICIA TAFIN, SLANEY ANDREW JOHN, MUKAIDONO MITSUHIRO, JONES JOHN CLIFFORD
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS ADHESIVES CHEMISTRY DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING DYES FREQUENCY-CHANGING MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS ORGANIC CHEMISTRY PAINTS PHYSICS POLISHES TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a liquid crystal which can eliminate or reduce the temperature dependency of switching characteristics, and to provide a liquid crystal shutter. SOLUTION: This liquid crystal composition comprises a host substance which can exhibit a smectic C phase, and a chiral dopant material which can impart chirality to the host substance or enhance the chirality of the host substance. A response time-voltage curve has a minimum point for minimizing the response time, and is changed in response to temperature. The chiral dopant material contains the first chiral center and the second chiral center. The temperature coefficient of the spontaneous polarization of the second chiral center is larger than the temperature coefficient of the spontaneous polarization of the first chiral center, and the temperature coefficient of the spontaneous polarization of the second chiral center and the temperature coefficient of the spontaneous polarization of the first chiral center are complementary each other. The first chiral center and the second chiral center exist in such relative amounts that the response time-voltage curves are approximately coincident with each other within the above-described prescribed temperature range.