Whether the lock state display system and the lock state method of presentation, and when the ideal

摘要

PPROBLEM TO BE SOLVED: To provide a lock status display system and a lock status display method which eliminate the influence of a magnetic field on a display status, is excellent in portability and record retentivity and low in cost, and can be used for confirming a lock status, and a key suitable for the system and method. PSOLUTION: The key is provided with a memory display medium where a conductive film of a substrate and a transparent conductive film of a transparent substrate face each other and an electrophoresis microcapsule containing particles moved by electric field application is disposed between the films. The lock status display system includes a terminal of a display medium driving unit installed in a keyhole or the like, a display medium installed in a key grip to enable observing display from outside, and a terminal extending from the conductive film and installed at the inlet of the keyhole. When the key is inserted to lock or unlock, information corresponding to locking or unlocking is displayed. PCOPYRIGHT: (C)2010,JPO&INPIT