Semiconductor package and method of manufacturing thereof

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United States of America Patent

PATENT NO 9721913
SERIAL NO

15240291

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Abstract

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A semiconductor package comprises a semiconductor chip having an active surface with a conductive pad thereon; an electroplated Au—Sn alloy bump over the active surface; and a (glass) substrate comprising conductive traces electrically coupling with the electroplated Au—Sn alloy bump, wherein the electroplated Au—Sn alloy bump has a composition from about Au0.35Sn0.15 to about Au0.75Sn0.25 in weight percent uniformly distributed from an end in proximity to the active surface to an end in proximity to the substrate. A method of manufacturing a semiconductor package comprises forming patterns of conductive pads on an active surface of a semiconductor chip; electroplating Au—Sn alloy bump over the conductive pads; and bonding the semiconductor chip on a corresponding conductive trace on a substrate by a reflow operation or a thermal press operation.

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Patent Owner(s)

Patent OwnerAddress
CHIPMOS TECHNOLOGIES INCHSINCHU

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hsu, Tzu-Han Hsinchu, TW 12 48
Lu, Tung Bao Hsinchu, TW 5 28
Wang, Heng-Sheng Hsinchu, TW 2 4

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