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US 2003/0141580 A1Published application
Electronic card
AssigneeKabushiki Kaisha Toshiba
InventorMinoru Fukunaga
Life of this patent
Estimating the term…
Abstract
Charge prevention patterns disposed on one surface of a circuit board and electrolytic plating patterns disposed on the other surface of the circuit board are disposed in a zigzag pattern in end surfaces of the substrate. The thickness of a coating layer is smaller than the thickness of a card case.
Claims14
An electronic card comprising:
- a printed circuit board which has components mounted on one surface thereof;
- a cover member which covers the one surface of the printed circuit board;
- external connection terminals provided on the other surface of the printed circuit board;
- charge prevention circuit patters provided on the other surface of the printed circuit board;
- and
- a film which coats the other surface of the printed circuit board except for the external connection terminals.
3 more elements
An electronic card comprising:
- a printed circuit board;
- signal patterns disposed on one surface of the printed circuit board;
- a cover member which covers the one surface of the printed circuit board;
- charge prevention patterns which are disposed on the other surface of the printed circuit board;
- and
- a coating layer which coats circuit patterns disposed on the other surface of the printed circuit board, a thickness of the coating layer being smaller than a thickness of the cover member.
3 more elements
An electronic card comprising:
- a printed circuit board;
- a circuit pattern provided on one surface of the printed circuit board;
- a plating circuit pattern provided on the one surface of the printed circuit board and connected to the circuit patterns so as to contact edges of the circuit board;
- a predetermined potential pattern provided on the other surface of the circuit board;
- and
- a charge prevention circuit pattern provided on the other surface of the circuit board and extending from the predetermined potential pattern along the plating circuit pattern so as to contact the edges of the substrate.
3 more elements
An electronic card comprising:
- a printed circuit board;
- a circuit pattern for a signal path and provided on one surface of the printed circuit board;
- a plating circuit pattern provided on one surface of the printed circuit board and connected to the circuit patterns so as to contact edges of the circuit board;
- a predetermined potential pattern provided on the other surface of the circuit board;
- a charge prevention circuit pattern provided on the other surface of the circuit board and extending from the predetermined potential pattern along the plating circuit pattern so as to contact the edges of the substrate;
- a cover member which covers the one surface of the printed circuit board;
- a film which coats the other surface of the printed circuit board.
4 more elements
Dependencies are inferred from the claim text.