US 12,579,402 B2 · Metal IC card with improved antenna characteristics and manufacturing method for metal IC card

Abstract

Proposed is a wireless IC card having a wireless IC chip and a metal body. The wireless IC card includes an IC chip accommodating portion having an opening and being provided to accommodate the IC chip, a slit portion formed from a first side of the accommodating portion toward an outer edge of the metal body, and an antenna formed on a lower surface of the metal body and electrically connected to the IC chip. At least one antenna pattern is wound around the accommodating portion, and a first end of a first pattern is electrically connected to a first bonding position adjacent to the slit portion, so that one antenna pattern extends in a direction continuous with a winding direction of the antenna. The first bonding position is a preset position configured such that at least a portion of the metal body constitutes turns of the first pattern.

Claims10

Dependent claims

A wireless IC card in which a wireless IC chip is mounted and which comprises a metal body, the wireless IC card comprising:

an IC chip accommodating portion formed by forming an opening in the metal body and being provided so as to accommodate the wireless IC chip;
a slit portion formed by cutting the metal body from a first side of the IC chip accommodating portion toward an outer edge of the metal body;
and
an antenna disposed on a lower surface of the metal body and electrically connected to the wireless IC chip,
wherein the antenna has at least one antenna pattern comprising a first pattern and a second pattern, and a first end of the first pattern is electrically connected to a first bonding position of the metal body, and a first end of the second pattern is electrically connected to a second bonding position of the metal body, and
the slit portion is between the first bonding position and the second bonding position of the metal body.

3 more elements

A manufacturing method for a wireless IC card in which a wireless IC chip is mounted and which comprises a metal body, the manufacturing method comprising:

a process of forming an IC chip accommodating portion provided so as to accommodate the wireless IC chip by forming an opening in the metal body;
a process of processing a slit portion that is formed by cutting the meal body from a first side of the IC chip accommodating portion toward an outer edge of the metal body;
and
a process of connecting an antenna that is electrically connected to the wireless IC chip to a lower surface of the metal body,
wherein the antenna has at least one antenna pattern comprising a first pattern and a second pattern, and a first end of the first pattern is electrically connected to a first bonding position of the metal body, and a first end of the second pattern is electrically connected to a second bonding position of the metal body, and
the slit portion is between the first bonding position and the second bonding position of the metal body.

3 more elements

Dependencies are inferred from the claim text.

Metal IC card with improved antenna characteristics and manufacturing method for metal IC card

Life of this patent

Metal IC card with improved antenna characteristics and manufacturing method for metal IC card

Life of this patent

Abstract

Claims10