TWI846042B

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 1...

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Bibliographic Details
Main Authors OKUYAMA, DAISUKE, MATSUI, HIDETO, HATSUTA, CHIAKI, NAGATA, MASAHIRO, SHINOZAKI, KAZUHIRO, SEKI, KENTAROU, OOUCHI, KAZUNORI, YAMADA, MASAHIRO
Format Patent
LanguageChinese
Published 21.06.2024
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
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Summary: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.
Bibliography:Application Number: TW202211133356