Ken Idota

Title: Ken Idota: Innovator in Bipolar Transistor Technology

Introduction

Ken Idota is a prominent inventor based in Moriguchi, Japan. He has made significant contributions to the field of semiconductor technology, particularly in the development of bipolar transistors. With a total of 9 patents to his name, Idota's work has had a lasting impact on the industry.

Latest Patents

Among his latest patents is a groundbreaking design for a heterojunction bipolar transistor and the method for manufacturing it. This bipolar transistor features a substrate, an intrinsic base region, and an extrinsic base region. The intrinsic base region includes a silicon buffer layer formed on the substrate, along with a composition-ratio graded base layer that consists of silicon and germanium, where the composition ratio varies in thickness. The extrinsic base region is characterized by an extrinsic base formation layer of silicon, which is adjacent to the silicon buffer layer and has a thickness of no less than 40 nm.

Another notable patent involves a bipolar transistor that includes a silicon single crystalline layer serving as a collector, along with a single crystalline Si/SiGeC layer and a polycrystalline Si/SiGeC layer. This design incorporates an oxide film with an emitter opening, an emitter electrode, and an emitter layer. The intrinsic base layer is formed on the single crystalline Si/SiGeC layer, while part of the single crystalline Si/SiGeC layer, the polycrystalline Si/SiGeC layer, and the Co silicide layer together form an external base layer. The thickness of the emitter electrode is carefully set to prevent boron ions from reaching the emitter-base junction.

Career Highlights

Ken Idota has worked with notable companies such as Matsushita Electric Industrial Co., Ltd. and Panasonic Corporation. His experience in these organizations has allowed him to refine his skills and contribute to significant advancements in semiconductor technology.

Collaborations

Throughout his career, Idota has collaborated with esteemed colleagues, including Teruhito Ohnishi and Tohru Saitoh. These partnerships have fostered innovation and have been instrumental in the development of his patented technologies.

Conclusion

Ken Idota's contributions to bipolar transistor technology exemplify his innovative spirit and dedication to advancing the field. His patents reflect a deep understanding of semiconductor design and manufacturing processes. As a result