Lead frame and manufacturing method thereof

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12243811
APP PUB NO 20240030114A1
SERIAL NO

18375193

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A lead frame includes a plurality of lead portions. At least a part of an upper surface of the lead portion and a sidewall surface of the lead portion is a rough surface having been subjected to roughening treatment. A value of a* in a CIELab color space of the rough surface is within a range from 12 to 19, and a value of b* is within a range from 12 to 17.

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Patent Owner(s)

  • DAI NIPPON PRINTING CO LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Douchi, Kazunori Tokyo, JP 1 0
Hatsuta, Chiaki Tokyo, JP 30 180
Matsui, Hideto Tokyo, JP 3 1
Nagata, Masahiro Tokyo, JP 28 260
Okuyama, Daisuke Tokyo, JP 5 3
Seki, Kentarou Tokyo, JP 9 30
Shinozaki, Kazuhiro Tokyo, JP 6 53
Yamada, Masahiro Tokyo, JP 409 3595

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