TEMPERATURE-RESPONSIVE COLOR DEVICE

摘要

A unit having a plurality of cells (4) ... (8) which include a light filter and a liquid crystal composition, and which are characterized in that each cell displays a color in response to exposure to a temperature in a predetermined narrow range which is above about 27 DEG C and below about 38 DEG C, and otherwise appears dark; the color that each cell displays is different from the colors that the other cells display; and no more than two of the cells display color at any given temperature. The device is used to determine skin temperature.