Company Filing History:
Years Active: 1998-1999
Title: Leon A. Allen: Innovator in Semiconductor Technology
Introduction
Leon A. Allen is a notable inventor based in Grover, MO (US). He has made significant contributions to the field of semiconductor technology, holding a total of 3 patents. His work focuses on improving the processes involved in crystal growth, particularly in the Czochralski process.
Latest Patents
Among his latest patents, Allen has developed methods for improving zero dislocation yield of single crystals. One of his notable inventions is a method of reinforcing a crucible for the containment of molten semiconductor material during the Czochralski process. This invention aims to inhibit the formation of dislocations within a single crystal grown by the process. The crucible is designed with a body of vitreous silica, featuring a bottom wall and a sidewall formation that defines a cavity for holding the molten semiconductor material. The innovative design includes a first devitrification promoter deposited on the inner surface of the sidewall formation, which promotes uniform dissolution and reduces the release of crystalline silica particulates into the molten semiconductor material. Additionally, a second devitrification promoter is applied to the outer surface, reinforcing the vitreous silica body.
Another significant patent by Allen is for surface-treated crucibles that enhance zero dislocation performance. This invention also utilizes a body of vitreous silica and incorporates devitrification promoters on both the inner and outer surfaces of the sidewall formation. The first layer of substantially devitrified silica promotes uniform dissolution, while the second layer reinforces the crucible, ensuring improved performance during the crystal growing process.
Career Highlights
Leon A. Allen is currently associated with MEMC Electronic Materials, Inc., where he continues to innovate in the semiconductor field. His work has been instrumental in advancing the technology used in crystal growth processes.
Collaborations
Throughout his career, Allen has collaborated with notable colleagues, including Richard L. Hansen and Larry E. Drafall. These collaborations have contributed to the development of advanced technologies in the semiconductor industry.
Conclusion
Leon A. Allen's contributions to semiconductor technology through his innovative patents have significantly impacted the field. His work continues to pave the way for advancements in crystal growth processes, showcasing his dedication to innovation.