Bistable liquid crystal displays and the method for driving the same

The present invention provides a bistable chiral tilted-holneotropic nematic liquid crystal (BCTHN) display, which can be switched between the tilted-homeotropic state (TH state) and the twisted state (T state) by using dual frequency liquid crystal material. These two states can be maintained witho...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HSU, JY-SHAN, HUANG, PING-WEN, CHEN, SHU-HSIA, LINAG, BAU-JY
Format:	Patent
Sprache:	chi ; 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:	The present invention provides a bistable chiral tilted-holneotropic nematic liquid crystal (BCTHN) display, which can be switched between the tilted-homeotropic state (TH state) and the twisted state (T state) by using dual frequency liquid crystal material. These two states can be maintained without the application of electric field. This bistable display uses the rubbing technique for the substrates that is a very popular method used in the liquid crystal display factory. In contrast to the conventional liquid crystal displays, the bistable liquid crystal display according to the present invention does not need high voltage to induce the flow of liquid crystal or break the anchoring energy. Only 5-volt pulses are required to switch between these two stable states.