| abstract |
A light orientation film and a liquid crystal thin film are formed adjacent to eachnother. Light is irradiated to the light orientation film and the liquid crystal thin film,nso as to cause the light orientation film to be orientated while viscosity of the liquidncrystal thin film is lowered by a temperature increase by the light irradiation, so thatnan intermolecular force on the boundary between the light orientation film and thenliquid crystal thin film causes the liquid crystal molecules in the liquid crystal thin filmnto be orientated according to the orientation of the light orientation film. By thisnorientation of the liquid crystal molecules, recording information is maintained. Thus,nit is possible to realize a sufficient signal amount while using the light orientation filmnas well as to obtain a thermal stability and a stability against light irradiation. |