Displaytechnik (Display technique)

Static scattering in filled nematic: new liquid crystal display technique
R. Eidenschink, W.H. de Jeu, Electron Lett. 27, 1195 (1991).

Abstract: A new bistable liquid crystal display is described that uses a nematic phase in which solid particles are dispersed. The display effects rely on direct static light scattering so that no polarisers are required. A two-frequency addressing scheme provides, in principle, a method for electrical control.

A new Liquid Crystal Display with Bistability and Selective Erasure using Scattering in Filled Nematics
M. Kreuzer, T. Tschudi, W.H. de Jeu, R. Eidenschink, Appl. Phys. Lett. 62, 1712 (1993).

Abstract: We present a new bistable scattering effect in a Filled Nematic liquid crystal, and its application to a high resolution laser-addressed display. The Filled Nematic consists of a small fraction of inorganic particles of nm-size in a nematic liquid crystal with positive dielectric anisotropy. The scattering ON-state is reached by locally writing with a laser. The transparent OFF-state can be obtained by combining a moderate voltage with selective application of the laser to the part to be erased. The key parameters controlling the processes and the possible physical mechanisms involved are discussed.

Filled Nematics,
M. Kreuzer, R. Eidenschink in Liquid Crystals in Complex Geometrics, Ed. G.P. Crawford and S. Zumer, Taylor & Francis 1995, 307 pp.

Abstract: The possibilities of producing a projection display of high resolution using a combination of nanometer particles and a nematic phase are outlined. Calculations of contrast, writing speed and resolution of the laser written pixels are given.

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