GUEST-HOST LIQUID CRYSTAL DEVICE

摘要

A pleochroic material is dissolved in a helically ordered liquid crystal mixture to form a thin film which selectively absorbs unpolarized incident light. In the absence of an electric field through the film, virtually all of the unpolarized light is absorbed by the film, even without the use of an auxiliary polarizer. When an electric field is applied to the film, the molecules thereof are reoriented to a nonabsorbing state. This electrically controlled absorption phenomenon is the basis for an advantageous display device.