Antiferroelectric and V-shape liquid crystal on silicon microdisplays

• Autorzy: Otón J. M. , Dąbrowski R. , Quintana X. , Urruchi V , Gayo J. L.
• Języki publikacji: EN

Abstrakty

EN

In this work, the use of antiferroelectric and V-shape liquid crystals for video projection using LCOS microdisplays has been explored. Antiferroelectric grey levels arise from a double symmetric hysteresis loop that can be stabilised by a constant holding voltage, thus an active matrix is not strictly required in this case. If used, then the voltage levels and the waveform must be adjusted to fulfil the voltage limitations dictated by the matrix. V-shape materials lack hysteresis ; therefore the active matrix is mandatory to stabilise the levels. Voltage limitations, however, are less restrictive int his case, since V-shape smectics require just a few volts for full switching.

Słowa kluczowe

EN

antiferroelectric; V-shape; waveform; active matrix; LCOS

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2002
• Tom: Vol. 10, No. 1
• Strony: 17--21
• Opis fizyczny: Bibliogr. 6 poz.

Twórcy

autor

Otón J. M.

autor

Dąbrowski R.

autor

Quintana X.

autor

Urruchi V

autor

Gayo J. L.

• Dpt.Tecnologia Fotonica, E.T.S. Ingenieros de Telecomunicacion, Universidad Politecnica de Madrid, Ciudad Universitaria, 28040 Madrid, Spain,

Bibliografia

• 1. S. S. Seomun, V. P. Panov, J. K. Vij, A. Fukuda, and J. M. Otón, "Dependence of the molecular orientational states on the surface conditions for the V-shape switching in ferroelectric-like samples", Phys. Rev. E64, 6404(4) Part1, 0307-0309 (2001).
• 2. X. Quintana, J. L. Gayo, C. Rodrigo, V. Urruchi, and J.M. Otón, "Addressing waveforms for tristable AFLCs in active matrix displays", Ferroelectrics 246, 211-218 (2000).
• 3. J. M. Otón, C. Toscano, V. Urruchi, J.L. Gayo, X. Quintana, and L. Sirleto, "Reflective SLMs based on antiferroelectric and V-shape liquid crystals" 9th Int. Topical Meeting on Optics of Liquid Crystals OLC'01, Sorrento, Italy, 2001.
• 4. H. Okada, M. Watanabe, H. Onnagawa, and K. Miyashita, "New gray level control technique and its characterization for antiferroelectric liquid crystal cells", Jpn. J. Appl. Phys. 34, L375-L378 (1995).
• 5. M. Watanabe, Y. Shimano, H. Okada, and H. Onnagawa, "Optimisation method of memory characteristic in antiferroelectric liquid crystals", Jpn. J. Appl. Phys. 36, 767-772 (1997).
• 6. R. Hasegawa, H. Fujiwara, H. Nagata, Y. Hara, T. Saishu, R. Fukushima, M. Akiyama, H. Okumura, and K. Takatoh, "A 15-in XGA thresholdless antifenoelectric LCD addressed by TFTs and using the quasi-DC driving method", J. Soc. Inform. Display 9, 107-113 (2001).