Company Filing History:
Years Active: 1999-2003
Title: Keh-Jeng Chang: Innovator in Integrated Circuit Technology
Introduction
Keh-Jeng Chang is a prominent inventor based in San Jose, California, known for his significant contributions to the field of integrated circuit technology. With a total of eight patents to his name, Chang has developed innovative methods that enhance the performance and accuracy of integrated circuits.
Latest Patents
Among his latest patents is a "Method and system for extraction of parasitic interconnect impedance including inductance." This novel parasitic extraction system features an interconnect primitive library that includes a parameterized inductance function for at least one conducting layer of the integrated circuit. The parasitic extractor analyzes structures within a selected distance of a chosen conductor and determines parasitic inductance values using the parameterized inductance function. This system allows for the extraction of parasitic impedances, including inductance, which leads to more accurate modeling and timing analysis of integrated circuit layouts.
Another notable patent is the "Method for determining on-chip sheet resistivity." This method measures resistance in a test structure to ascertain the sheet resistivity of a conductor. It involves a family of test structures designed to determine effective sheet resistivity as a function of conductor width. This method is particularly useful in manufacturing processes where "slots" or "islands" are created in conductors to prevent dishing during chemical-mechanical polishing.
Career Highlights
Keh-Jeng Chang has worked with several notable companies, including Sequence Design, Inc. and Frequency Technology, Inc. His experience in these organizations has allowed him to refine his skills and contribute to advancements in integrated circuit technology.
Collaborations
Chang has collaborated with various professionals in his field, including Robert G. Mathews and Li-Fu Chang, who is a woman. These collaborations have further enriched his work and led to innovative solutions in the industry.
Conclusion
Keh-Jeng Chang's contributions to integrated circuit technology through his patents and collaborations highlight his role as a leading inventor in the field. His innovative methods continue to influence the design and functionality of integrated circuits, showcasing the importance of his work in advancing technology.