Location History:
- Sekimachi, JP (1983)
- Tokyo, JP (1980 - 1986)
Company Filing History:
Years Active: 1980-1986
Title: Hirotsugu Kozuka: Innovator in Semiconductor Technology
Introduction
Hirotsugu Kozuka is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 3 patents. His work focuses on innovative methods that enhance the performance and efficiency of semiconductor devices.
Latest Patents
One of his latest patents is a method of making three-dimensional semiconductor devices. This patent discloses a semiconductor device that features at least one lower resistance region formed in a single-crystalline semiconductor film. This film continuously coats both a single-crystalline semiconductor substrate and an insulating film on the substrate's surface. The use of a single-crystalline semiconductor film provides numerous advantages over prior art semiconductor devices. The film is created by irradiating a polycrystalline or amorphous semiconductor film with a laser beam.
Another notable patent by Kozuka is a method of diffusing an impurity. In this method, alumina or aluminum is arranged on or near a wafer surface where an impurity, particularly antimony, is to be diffused. This technique allows for the vapor diffusion of the impurity in much larger quantities than traditional methods, resulting in a very low sheet resistance for the diffused layer of antimony.
Career Highlights
Hirotsugu Kozuka is currently employed at Hitachi, Ltd., where he continues to innovate in the semiconductor field. His work has been instrumental in advancing semiconductor technology, making significant impacts on the industry.
Collaborations
Kozuka has collaborated with notable coworkers, including Tamura Masao and Yasuo Wada. Their combined expertise has contributed to the success of various projects and patents.
Conclusion
Hirotsugu Kozuka is a key figure in semiconductor innovation, with a focus on methods that improve device performance. His contributions through patents and collaborations highlight his importance in the field.