Memory card with electrostatic discharge protection and manufacturing method thereof
AssigneeOrient Semiconductor Electronics Limited
InventorsYueh-Ming Tung, Kuo-Yang Sun, Chia-Ming Yang, Chung-Lun Lee, Jin-Chun Wen, Yuan-Wei Liu, Wei-Mao Hung
Life of this patent
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Abstract
A memory card with electrostatic discharge (ESD) protection and a manufacturing method thereof are provided. The memory card includes a circuit board, a set of contacts, at least one chip and an ESD protection path. The signal paths of the board is not exposed at the edge of the circuit board. The ESD protection path for transmitting ESD current is disposed on the circuit board. Furthermore, a part of the ESD protection path extends to the edge of the circuit board.
Claims20
A memory card with electrostatic discharge (ESD) protection, comprising:
- a circuit board, wherein each of signal paths of the circuit board is not exposed at the edge of the circuit board;
- a set of contacts disposed on the circuit board for electrical connection to external device;
- at least one chip disposed on the circuit board and electrically connected to the set of contacts through the signal paths;
- and
- an ESD protection path disposed on the circuit board for transmitting an ESD current, wherein a part of the ESD protection path extends to the edge of the circuit board.
A method of manufacturing memory card with ESD protection, comprising:
- defining a cutting lines of a circuit board;
- disposing a patterned circuit including a set of contacts, an ESD protection path and signal paths on a circuit board, wherein a plating lines of the ESD protection path and a plating lines of the signal paths extend to the area outside the cutting lines of the circuit board;
- removing the plating lines of the signal paths;
- cutting off the circuit board along the cutting line for forming a edge of the circuit board, wherein each of the signal paths is not exposed at the edge of the circuit board, and the plating lines of the ESD protection paths are exposed at the edge of the circuit board;
- and
- disposing at least one chip on a circuit board, wherein the chip electrically connects to the set of contacts through the signal paths.
Dependencies are inferred from the claim text.