Shinichiro Wada

Title: The Innovations of Shinichiro Wada

Introduction

Shinichiro Wada is a prominent inventor based in Fuchu, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 12 patents. His work focuses on enhancing the performance and reliability of semiconductor devices.

Latest Patents

One of his latest patents is a semiconductor device and its manufacturing method. In this innovation, Wada reduces the channel length in an LDMOS transistor to increase saturation current while optimizing the trade-off between on-resistance and off-state breakdown voltage. A short channel region is selectively formed between an element isolation film and a low-concentration body region, ensuring that it is located immediately below the gate oxide film. This short channel region has a conduction type opposite to that of the low-concentration body region and features a higher carrier concentration. The body region is retreated by the presence of the short channel region toward a high-concentration source region.

Another notable patent is a method of manufacturing a semiconductor device that includes a high voltage ESD protective diode. This diode possesses high avalanche withstand capability and can be formed using the same manufacturing steps as those for a high voltage transistor. The device's structure includes a gate oxide film over a substrate surface at a PN junction formed of an N-type low concentration semiconductor substrate and a P-type low concentration diffusion region. The gate electrode is disposed over the gate oxide film, and the electric field at the PN junction is moderated during avalanche breakdown, enhancing its avalanche withstand capability.

Career Highlights

Wada has worked with notable companies such as Hitachi, Ltd. and Hitachi ULSI Systems Co., Ltd. His experience in these organizations has contributed to his expertise in semiconductor technology and innovation.

Collaborations

Some of his coworkers include Yohei Yanagida and Hideaki Nonami. Their collaboration has likely fostered a creative environment that encourages innovation in semiconductor research and development.

Conclusion

Shinichiro Wada's contributions to semiconductor technology through his patents and career achievements highlight his role as a leading inventor in the field. His work continues to influence advancements in semiconductor devices and manufacturing methods.