Kentaro Nakamura

Title: Kentaro Nakamura: Innovator in Semiconductor Technology

Introduction

Kentaro Nakamura is a prominent inventor based in Sendai, Japan. He has made significant contributions to the field of semiconductor technology, particularly in the development of static induction thyristors. With a total of two patents to his name, Nakamura's work has had a lasting impact on the industry.

Latest Patents

Nakamura's latest patents include an epitaxial deposition process for producing an electrostatic induction and a static induction type thyristor. The epitaxial deposition process involves manufacturing a static induction thyristor by providing a semiconductor substrate of the first conductivity type, which defines a first semiconductor layer. A second semiconductor layer of a second conductivity type is then formed on this substrate. The relative impurity concentrations of the first and second semiconductor layers are effective for forming charge depletion regions when no electrical signal is applied. This design prevents the injection of charge carriers through the second semiconductor layer when the thyristor is in a blocking state. When electrically forward biased, the second semiconductor layer allows for a sufficient reduction of the depletion regions, enabling the thyristor to switch to a conductive state. The second semiconductor layer also defines the gate region of the thyristor.

The static induction type thyristor comprises an n-type semiconductor layer and a p-type semiconductor layer, forming a pn junction. Additional n-type and p-type semiconductor layers serve as main electrodes, while apertured gate layers are provided with a gate electrode. An intrinsic semiconductor layer may be substituted for the n-type and p-type layers, and a process for producing such a thyristor is also disclosed.

Career Highlights

Throughout his career, Kentaro Nakamura has worked with notable organizations such as the Semiconductor Research Foundation and Mitsubishi Electric Corporation. His experience in these companies has allowed him to refine his expertise in semiconductor technology and contribute to innovative solutions in the field.

Collaborations

Nakamura has collaborated with esteemed colleagues, including Takashi Kitsuregawa and Jun-ichi Nishizawa. These partnerships have fostered a collaborative environment that has led to advancements in semiconductor research and development.

Conclusion

Kentaro Nakamura's contributions to semiconductor technology, particularly through his patents and collaborations, highlight his role as an influential inventor in the industry. His work continues to inspire advancements in the field of electronics and semiconductor devices.