US 6,724,690 B1Granted

Wrist watch containing tag

AssigneesMitsubishi Materials Corporation, Seiko Epson Corporation

InventorsTakanori Endo, Takashi Tsuchida, Seirou Yahata

Life of this patent

Estimating the term…

Loading patent…

Abstract

It is an object of this invention to provide a wrist watch containing an RFID tag which maintains a sense of luxury and has comparatively high sensitivity. The wrist watch containing tag of this invention comprises a watch case having a ring-shaped frame, a glass lid, and a bottom lid; a drive section which is accommodated inside the watch case; a display section for displaying time which is driven by the drive section; and an RFID tag which is accommodated inside the watch case and comprises an antenna and an IC chip; the ring-shaped frame and/or the bottom lid having at least one slit therein, and the antenna comprising a wound coil which runs along the inner face of the ring-shaped frame so as to surround the drive section. The slit is filled with a nonconductive resin, affixing the opposing cutaway planes together.

Claims17

Dependent claims

A wrist watch containing tag comprising:

a watch case having a ring-shaped frame, a glass lid which seals a top side of the ring-shaped frame, and a bottom lid which seals a bottom side of the ring-shaped frame;
a drive section which is accommodated inside said watch case;
a display section for displaying time which is accommodated inside the watch case and is driven by said drive section;
and
an RFID tag which is accommodated inside the watch case and comprises an antenna and an IC chip;
wherein,
the antenna comprising a wound coil which runs along the inner face of said ring-shaped frame so as to surround said drive section;
at least one of said ring-shaped frame and said bottom lid comprising a metal material, and in addition, a slit for preventing the generation of inductive current being provided in at least one of said ring-shaped frame and said bottom lid which comprise(s) the metal material.

5 more elements

Dependencies are inferred from the claim text.