System and method for forming solder bumps

System and method for forming solder bumps

In an embodiment, a method for forming a solder bump includes preparing a transfer mold having a solder pillar extending from a mold substrate and through a first photoresist layer and having a shape partially defined by a second photoresist layer that is removed prior to transfer of the solder. In...

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Hauptverfasser: Peter Jerome Sorce, Eric Peter Lewandowski, Jae-Woong Nah, Jeng-Bang Yau
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
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creator Peter Jerome Sorce
Eric Peter Lewandowski
Jae-Woong Nah
Jeng-Bang Yau
description In an embodiment, a method for forming a solder bump includes preparing a transfer mold having a solder pillar extending from a mold substrate and through a first photoresist layer and having a shape partially defined by a second photoresist layer that is removed prior to transfer of the solder. In an embodiment, the mold substrate is flexible. In an embodiment, the transfer mold is flexible. In an embodiment, the method includes providing a device substrate having a wettable pad. In an embodiment, the method includes placing the transfer mold and the device substrate into aligned contact such that the solder pillar is in contact with the wettable pad. In an embodiment, the method includes forming a metallic bond between the solder pillar and the wettable pad. In an embodiment, the method includes removing the mold substrate and first photoresist layer.
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In an embodiment, the mold substrate is flexible. In an embodiment, the transfer mold is flexible. In an embodiment, the method includes providing a device substrate having a wettable pad. In an embodiment, the method includes placing the transfer mold and the device substrate into aligned contact such that the solder pillar is in contact with the wettable pad. In an embodiment, the method includes forming a metallic bond between the solder pillar and the wettable pad. 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subjects BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
title System and method for forming solder bumps
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