This inventor holds 2 USPTO granted patents. Top assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Electric Corporation. Active years: 2008-2016.
Company Filing History:
1 out of 21,351 
1 out of 16,539 
Years Active: 2008-2016
Title: Junichi Murai: Innovator in Semiconductor Technology
Introduction
Junichi Murai is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of semiconductor technology, holding 2 patents that showcase his innovative approach to device manufacturing.
Latest Patents
Murai's latest patents include a semiconductor device and manufacturing method that enhances reliability by warping an insulating substrate into a convex shape. This design ensures a close contact between a cooling member and the insulating substrate, which is crucial for optimal performance. The semiconductor device comprises an insulating substrate, a semiconductor element on its first surface, a case connected to the substrate, and resin filling the case. The relationship between the thickness of the insulating substrate and resin, along with their linear expansion coefficients, is carefully designed to maintain stability and performance.
Another significant patent is for a semiconductor device and semiconductor assembly module featuring a gap-controlling lead structure. In this design, semiconductor elements are mounted on a lead frame with leads, connected by metallic wires. The device includes a heat sink and is sealed with a plastic package, ensuring that the leads are exposed outward. This innovative structure improves the temperature-rise property of the leads, enhancing solderability and overall device performance.
Career Highlights
Throughout his career, Junichi Murai has worked with prominent companies such as Mitsubishi Denki Kabushiki Kaisha and Mitsubishi Electric Corporation. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking advancements in semiconductor technology.
Collaborations
Murai has collaborated with notable coworkers, including Kenichi Hayashi and Hisashi Kawafuji. Their combined expertise has fostered an environment of innovation and creativity in their projects.
Conclusion
Junichi Murai's contributions to semiconductor technology through his patents and career achievements highlight his role as a leading inventor in the field. His innovative designs continue to influence the development of reliable and efficient semiconductor devices.