Matrix array bistable device addressing

A ferroelectric liquid crystal display comprises a matrix of pixels addressable by first and second sets of electrode tracks 5, 6 crossing one another at the locations of the pixels. The pixels are addressed by applying data pulses 23, 24 to the first set of electrode tracks 5 and strobe pulses 22 t...

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Bibliographische Detailangaben
Hauptverfasser:	JONATHAN RENNIE HUGHES, MARIE HARPER ANDERSON, JOHN CLIFFORD JONES
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION CRYPTOGRAPHY 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 DISPLAY EDUCATION FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS SEALS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	A ferroelectric liquid crystal display comprises a matrix of pixels addressable by first and second sets of electrode tracks 5, 6 crossing one another at the locations of the pixels. The pixels are addressed by applying data pulses 23, 24 to the first set of electrode tracks 5 and strobe pulses 22 to the second set of electrode tracks 6 to switch certain pixels selected by the data pulses 23, 24 from a first state to a second state under the effect of the voltage difference between the data pulses 23, 24 and the strobe pulses 22, and blanking pulses 19 are applied to the second set of electrode tracks 6 to set the pixels to the first state in advance of the application of subsequent strobe pulses 22 to switch selected pixels from the first state to the second state. Each blanking pulse 19 includes a blanking portion 20 of one polarity adapted to switch the pixels to a fully switched region of the first state and a trailing portion 21 of the opposite polarity adapted to assist relaxation of the pixels from the fully switched region of the first state to a relaxed region of the first state from which rapid switching of pixels to the second state is possible during application of a subsequent strobe pulse 22.