Low threshold voltage asymmetric antiferroelectric liquid crystal cells

• Autorzy: Bennis N. , Spadło A. , Dąbrowski R. , Martinelli E. , Galli G. , Quintana X. , Otón J. M. , Geday M. A.
• Konferencja: International Workshop on Liquid Crystals for Photonic ; (26-28.04.2006 ; Gent, Belgium)
• Języki publikacji: EN

Abstrakty

EN

Asymmetric antiferroelectric liquid crystal displays (AAFLCD) are attractive since they show a very well defined off state and fast switching time. Moreover, they can be driven by a simple biasless DC compensated waveform. The electrooptical response of an AAFLCD allows for new addressing modes, including quasi-static intermediate greyscales maintained without applying a field and passively addressed multiplexed high-frequency displays and spatial light modulators. A new kind of asymmetric cells have been obtained by using fluorinated block copolymer (FBC) alignment, which enhances surface segregation and provides a low energy surface. In this work we combine FBC alignment with antiferroelectric liquid crystal mixtures containing strongly electronegative fluorinated components. Threshold voltages for the antiferroelectric-ferroelectric phase transition as low as 3 volts are observed. We report the time evolution of the shift of the electro-optical response.

Słowa kluczowe

EN

antiferroelectric liquid crystals; multistable analogue retardation; alignment layer

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2006
• Tom: Vol. 14, No. 4
• Strony: 281--285
• Opis fizyczny: Bibliogr. 14 poz., wykr.

Twórcy

autor

Bennis N.

autor

Spadło A.

autor

Dąbrowski R.

autor

Martinelli E.

autor

Galli G.

autor

Quintana X.

autor

Otón J. M.

autor

Geday M. A.

• Depto. Tecnología Fotónica, ETSI Telecomunicación, Universidad Politécnica de Madrid, Ciudad Universitaria s/n, E-28040 Madrid, Spain,

Bibliografia

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