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US 6,784,527 B2Granted
Electronic card formed of a double-sided printed circuit board with static electricity prevention circuit
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.
Claims21
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;
- a charge prevention pattern 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, wherein a grip is formed at one end of the cover member, and the charge prevention pattern is provided under the grip.
3 more elements
An electronic card comprising:
- a printed circuit board;
- a first circuit pattern disposed on one surface of the printed circuit board;
- a cover member which covers the one surface of the printed circuit board;
- a second circuit pattern disposed on the other surface of the printed circuit board;
- a charge prevention pattern which is disposed on the other surface of the printed circuit board;
- and
- a coating layer which coats the other surface of the printed circuit board, a thickness of the coating layer being smaller than a thickness of the cover member, wherein a grip is formed at one end of the cover member, and the charge prevention pattern is provided under the grip.
4 more elements
An electronic card comprising:
- a printed circuit board;
- a circuit pattern provided on one surface of the printed circuit board;
- a plating pattern provided at peripheries of the one surface of the printed circuit board and being 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 pattern provided at peripheries of the other surface of the circuit board and being connected to the predetermined potential pattern along the plating pattern so as to contact the edges of the circuit board.
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 pattern provided at peripheries of the one surface of the printed circuit board and being 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 pattern provided at peripheries of the other surface of the circuit board and being connected to the predetermined potential pattern along the plating pattern so as to contact the edges of the circuit board;
- a cover member which covers the one surface of the printed circuit board;
- and
- a film which coats the other surface of the printed circuit board.
5 more elements
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 at an end of the other surface of the printed circuit board;
- a charge prevention pattern provided at peripheries except the end providing the external connection terminals of the other surface of the circuit board so as to connect edges 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;
- a first circuit pattern disposed on one surface of the printed circuit board;
- a cover member which covers the one surface of the printed circuit board;
- a second circuit pattern disposed on the other surface of the printed circuit board;
- a charge prevention pattern which is disposed at peripheries of the other surface of the printed circuit board so as to connect edges of the printed circuit board;
- and
- a coating layer which coats the other surface of the printed circuit board, a thickness of the coating layer being smaller than a thickness of the cover member.
4 more elements
Dependencies are inferred from the claim text.