Robert A Riddle
Engineers in Tracy, CA

License number
Utah 166360-2202
Issued Date
Mar 12, 1984
Expiration Date
Mar 31, 2017
Category
Engineer/Land Surveyor
Type
Professional Engineer
Address
Address
Tracy, CA
LicenseFiles verified this license of Nov 19, 2016 at the Utah Division of Occupational and Professional Licensing.

Professional information

Robert Riddle Photo 1

Repairable Chip Bonding/Interconnect Process

US Patent:
5653019, Aug 5, 1997
Filed:
Aug 31, 1995
Appl. No.:
8/522471
Inventors:
Anthony F. Bernhardt - Berkeley CA
Robert J. Contolini - Livermore CA
Vincent Malba - Livermore CA
Robert A. Riddle - Tracy CA
Assignee:
Regents of the University of California - Oakland CA
International Classification:
H05K 334
US Classification:
29840
Abstract:
A repairable, chip-to-board interconnect process which addresses cost and testability issues in the multi-chip modules. This process can be carried out using a chip-on-sacrificial-substrate technique, involving laser processing. This process avoids the curing/solvent evolution problems encountered in prior approaches, as well is resolving prior plating problems and the requirements for fillets. For repairable high speed chip-to-board connection, transmission lines can be formed on the sides of the chip from chip bond pads, ending in a gull wing at the bottom of the chip for subsequent solder.

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