Modifying electrooptics of orthoconic antiferroelectric liquid crystal cells by manufacturing procedures |
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Authors: | A Spadło N Bennis R Dąbrowski X Quintana J M Otón M A Geday |
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Institution: | (1) Military University of Technology, 2 Kaliskiego Str., 00-908 Warsaw, Poland;(2) Dpto. Tecnología Fotónica, ETSI Telecommunicación, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, E-28040 Madrid, Spain |
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Abstract: | Orthoconic antiferroelectric liquid crystals (AFLCs) having 45° tilt angle have been proposed to overcome the problem of reduced
contrast usually exhibited by regular antiferroelectric displays. However, the pitch of the helix induced by chirality is
customarily short in existing orthoconic materials, making it difficult to achieve surface stabilized configurations when
the material’s pitch is smaller than the cell thickness.
In this work, the influence of different manufacturing procedures on the electrooptical behaviour of orthoconic AFLCs is studied.
Using the same orthoconic AFLC mixture, aligning surfaces and manufacturing protocol, we have observed two dissimilar responses,
true orthoconic behaviour, and orthoconic V-shape response. The electrooptical response depends ultimately on the rubbing
strategy adopted in either case. |
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Keywords: | orthoconic AFLC electrooptical response manufacturing rubbing |
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