Semiconductor device and manufacturing method thereof

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United States of America Patent

PATENT NO 5686353
SERIAL NO

08576160

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An electrode terminal (5) provided on a surface of a semiconductor chip (4) has a square shape in plane view. Further, the projecting apex portion (8a) of a bump (8) provided on the electrode terminal (5) orients to a corner portion (5a) of the electrode terminal (5). Hereupon, a gold ball (2a) formed by melting the lower end portion of a gold wire (2) supplied through a capillary (1) is joined to the electrode terminal (5), and then the capillary (1) is moved in the direction of a diagonal line of the square electrode (5). Thus, the main portion of the gold wire (2) is separated from the gold ball (2a) so that the bump (8) is formed.

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Patent Owner(s)

Patent OwnerAddress
MATSUSHITA ELECTRIC INDUSTRIAL CO LTDJAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Higashi, Kazushi Kadoma, JP 35 459
Kumagai, Koichi Ikoma, JP 18 276
Tsukahara, Norihito Kyoto, JP 53 667
Yagi, Yoshihiko Ashiya, JP 29 520
Yonezawa, Takahiro Neyagawa, JP 27 310

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