Abstract: A minimum display unit forming a pattern, displayable by a light guide plate of a display device, has first and second prisms with reflective surfaces in a curved surface shape that is convex relative to an incident surface of the light guide plate. The first and second prisms are configured such that a ratio of light quantities from first and second light sources having different emission colors into the light guide plate, reflected by the reflective surface of the first prism, and directed to a predetermined direction is a first ratio; a ratio of light quantities from second and third light sources having different emission colors into the light guide plate, reflected by the reflective surface of the second prism, and directed to the predetermined direction is a second ratio. The first and second ratios are set such that the minimum display unit is displayed in a predetermined display color.

Abstract: A cyclohexanol derivative represented by the following general formula (1) and preferably the following general formula (1a): ##STR1## wherein R represents a linear or branched alkyl group having 1 to 5 carbon atoms. The above cyclohexanol derivative imparts satisfactory refrigeration to not only the mouth mucosa but also the skin. Moreover, it is practically odorless. A cool feeling and various cool feeling compositions which are practically odorless can be obtained from the cyclohexanol derivative.