This inventor holds 2 USPTO granted patents and 1 published patent application. Top assignee: Digital Equipment Corporation. Active years: 1993.
Company Filing History:
Years Active: 1993
Title: David C. Widder: Innovator in Semiconductor Technology
Introduction
David C. Widder is a notable inventor based in Billerica, MA (US). He has made significant contributions to the field of semiconductor technology, holding a total of 2 patents. His work focuses on enhancing the efficiency and reliability of semiconductor probes and testing methods.
Latest Patents
One of his latest patents is for a semiconductor probe and alignment system. This innovative system includes a silicon-based substrate and membrane featuring a plurality of pyramid-shaped contactors. Each contactor is equipped with a metalized tip designed to contact bonding pads on a semiconductor die. The surrounding area of the probe is thinned to create a flexible membrane, ensuring compliance and reliable contact between each contactor and its respective bonding pad. Additionally, the alignment system incorporates a guide wall made from a photo-imageable material, which aids in aligning the contactors onto the bonding pads.
Another significant patent by Widder is a method and apparatus for testing inner lead bonds. This process involves nondestructive testing of beam lead bonds using a high-pressure liquid jet applied to the beam leads adjacent to the bond pad. The force applied in the opposite direction of the bonding step allows for the detection of bond strength. If the bond is weak, the lead bends away from the bonding pad, making it detectable either visually or electrically. Conversely, if the bond is strong, no degradation occurs.
Career Highlights
David C. Widder has worked at Digital Equipment Corporation, where he has contributed to various projects in semiconductor technology. His expertise in this field has made him a valuable asset to the company.
Collaborations
Widder has collaborated with Diethelm G. Ringleb, further enhancing the innovative work being done in semiconductor technology.
Conclusion
David C. Widder's contributions to semiconductor technology through his patents and work at Digital Equipment Corporation highlight his role as an influential inventor in the industry. His innovative approaches continue to shape the future of semiconductor applications.