FIELD EFFECT TYPE OPTICAL DISK

摘要

PURPOSE:To permit high-speed recording by adding an antistatic agent or conductive resin to a UV resin to be interposed between a transparent electrode and recording film in order to decrease the specific resistance of said resin. CONSTITUTION:A 'NESA(R)' film is formed as the transparent electrode film 2 on a transparent substrate 1 which is a PMMA plate. guide grooves are formed of a UV curing (UV) resin layer 3 thereon by a photopolymerization method. The recording film 4 consisting of a chalcogenide film of Sb-Se-Bi is formed on the resin layer 3 and a heat insulating electrode film 5 consisting of copper phthalocyanine is coated thereon; further, Al is formed by vapor deposition thereof and is coated with a protective resin. A power supply 8 is connected to the electrode film 2 and the electrode 6 via a switch SW and laser light 9 is applied to a field effect type disk in the case of subjecting said disk to recording. The amorphous recording film 4 is then crystallized and the optical constant thereof changes. Since the laser light is projected in the state of impressing the electric field to the recording film 4, the energy necessary for the crystallization is low and the rate of crystallization is improved.