Circular polariser arrangements for transmissive and transflective chiral nematic liquid crystal displays

A full spectrum black-and-white chiral nematic liquid crystal display is presented comprising a chiral nematic liquid crystal cell of controllable planar structure and focal conic structure, the cell comprising chiral nematic liquid crystal material between two transparent substrates having electrod...

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Bibliographische Detailangaben
Hauptverfasser:	LEE, RICHARD C.H, TSANG, FU ON
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	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 FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	A full spectrum black-and-white chiral nematic liquid crystal display is presented comprising a chiral nematic liquid crystal cell of controllable planar structure and focal conic structure, the cell comprising chiral nematic liquid crystal material between two transparent substrates having electrodes; and the cell being arranged between two circular polarizers, wherein at least one circular polarizer is of opposite handedness to the chiral nematic liquid crystal material. In some configurations there may be a light source. Embodiments of transmissive and transflective type displays are presented in which both front and rear circular polarisers have the same handedness or the front polariser has the opposite handedness to the liquid crystal medium and the rear polariser.