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Thomas A. Scharr
Researcher at Motorola
Publications - 4
Citations - 78
Thomas A. Scharr is an academic researcher from Motorola. The author has contributed to research in topics: Wire bonding & Die (integrated circuit). The author has an hindex of 4, co-authored 4 publications receiving 78 citations.
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Patent
Method for forming a flip-chip bond from a gold-tin eutectic
TL;DR: In this article, a flip-chip-based method was proposed to flipchip an integrated circuit die to a substrate and a gold-tin eutectic bond was formed between the die and the conductive bonding areas of the substrate.
Patent
Device for solder removal
TL;DR: In this article, columnar structures on the supporting base through mask openings or by etching a solderable metal layer into columnar structure are used to remove solder from a substrate surface, and a standoff may be built into the device to prevent residue from remaining on the substrate surface between solder pads and to allow a controllable amount of solder to be left on the surface.
Patent
Elevated edge-protected bonding pedestals for semiconductor devices
TL;DR: An elevated bonding pad suitable for wire or lead frame attachment and having an insulating layer completely over its outer periphery is described in this article, which simplifies the processing required to form an elevated pad, and serves to protect the periphery against bonding damage, and provides protection against corrosion of the bonded encapsulated semiconductor unit.
Patent
Semiconductor chip with direct-bonded external leadframe
TL;DR: In this article, a hard metallic leadframe is directly bonded to a semiconductor chip without the need for solder or soft intermediate leadframes, providing a strong bond at the chip with the possibility for multiple simultaneous lead attachment of a leadframe having sufficient strength to serve as the external leads.