Modulation element comprising a mesogenic modulation medium having a cybotactic nematic phase that shows two distinct electro-optical transitions at one single temperature

摘要

The present invention relates to modulation elements for electromagnetic radiation and to modulation devices and systems comprising these devices, such as e.g. television screens and computer monitors, as well as to micrometer wave components. The modulation elements according to the invention comprise a mesogenic modulation medium with a dielectric anisotropy, which shows two or more distinct transitions upon application of an electric field. The mesogenic modulation media used in the modulation elements for electromagnetic radiation are also a subject of the present invention.

主权项

1. A modulation element for electromagnetic radiation comprising
an electrode arrangement, and a mesogenic modulation medium, wherein
the mesogenic modulation medium has a positive dielectric anisotropy and a cybotactic nematic phase, and the modulation element provides modulation with an operational temperature range and there is at least one single temperature within said operational temperature range at which said modulation element shows two or more distinct electro-optical transitions.