A wide-viewing-angle video display based on the deformed-helix ferroelectric liquid-crystal effect and a diode active matrix
| Autor: | Gerard Cnossen, Jürg Fünfschilling, Antonius Gerardus Hen Verhulst, Martin Schadt |
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| Rok vydání: | 1995 |
| Předmět: |
Materials science
Liquid-crystal display business.industry Viewing angle Ferroelectricity Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Active matrix law.invention Optics Liquid crystal law Equivalent circuit Contrast ratio Electrical and Electronic Engineering business Diode |
| Zdroj: | Journal of the Society for Information Display. 3:133 |
| ISSN: | 1071-0922 |
| Popis: | — A wide-viewing-angle video display has been realized using a deformed-helix ferroelectric liquid crystal (DHF-LC) in combination with a diode active matrix. The DHF-LC is operated in the symmetric mode (ac driving), preventing the occurrence of image sticking. The application of a reset pulse before the select pulse results in a much better step response of the display and in lower drive voltages. These effects have also been calculated by making use of the electronic equivalent circuit of DHF-LC. The display has a contrast ratio of 25 and a transmission 55% that of a twisted-nematic cell. |
| Databáze: | OpenAIRE |
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