Location History:
- Ibaraki, JP (2011 - 2013)
- Ushiku, JP (2017 - 2023)
Company Filing History:
Years Active: 2011-2025
Title: Shuichi Kubo: Innovator in Gallium Nitride Technology
Introduction
Shuichi Kubo is a prominent inventor based in Ushiku, Japan. He has made significant contributions to the field of semiconductor technology, particularly in the development of gallium nitride (GaN) substrates. With a total of 15 patents to his name, Kubo's work has advanced the capabilities of semiconductor devices.
Latest Patents
Kubo's latest patents include innovative technologies such as a self-standing GaN substrate, GaN crystal, a method for producing GaN single crystal, and a method for producing semiconductor devices. One of his key objectives is to provide a nonpolar or semipolar GaN substrate that boasts improved size and crystal quality. His self-standing GaN substrate features an angle between the normal of the principal surface and an m-axis of 0 degrees or more and 20 degrees or less. Additionally, the size of the projected image in a c-axis direction when the principal surface is vertically projected on an M-plane is 10 mm or more. Furthermore, a low distortion section with a section length of 6 mm or more is observed, with an a-axis length variation within the section of 10.0×10Å or less.
Another notable patent involves a gallium nitride substrate that includes a first main surface and a second main surface opposite to it. The first main surface is characterized as a non-polar or semi-polar plane, with a dislocation density measured by a room-temperature cathode luminescence method being 1×10 cm or less.
Career Highlights
Shuichi Kubo is currently employed at Mitsubishi Chemical Corporation, where he continues to push the boundaries of semiconductor technology. His work has been instrumental in enhancing the performance and quality of GaN substrates, which are crucial for various electronic applications.
Collaborations
Kubo has collaborated with notable colleagues such as Hirotaka Ikeda and Kenji Fujito, contributing to the advancement of their shared research goals.
Conclusion
Shuichi Kubo's innovative work in gallium nitride technology has established him as a leading figure in the semiconductor industry. His patents reflect a commitment to improving the quality and performance of semiconductor devices, making significant strides in this vital field.