Akira Tsukamoto

Title: Akira Tsukamoto: Innovator in Solid-State Image Sensors

Introduction

Akira Tsukamoto is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of solid-state image sensors, holding a total of 12 patents. His innovative work has advanced the technology used in various imaging applications.

Latest Patents

One of Tsukamoto's latest patents is a manufacturing method for solid-state image sensors. This method involves forming a single crystal silicon layer on a principal surface of a first wafer through epitaxial growth. A silicon oxide layer is then created on this single crystal silicon layer. Following this, a defect layer is introduced inside the single crystal silicon layer via ion implantation. The second wafer is bonded to the silicon oxide layer on the first wafer, leading to the formation of an SOI wafer. This wafer includes the silicon oxide layer formed on the second wafer and the single crystal silicon layer. A photodiode is subsequently formed in the single crystal silicon layer, with an interconnect layer established on the opposite surface of the silicon oxide layer.

Another notable patent focuses on a distance measuring method and system. This method employs a time-of-flight (TOF) distance measurement using light, enhancing accuracy without significantly increasing costs. A light source emits light to an object during an emission period, while a sensor converts the received reflected light into an electrical signal during multiple signal accumulation periods. The emission intensity of the light source is adjusted to create a nonlinear relationship between the accumulated signal amount and the distance to the object.

Career Highlights

Throughout his career, Akira Tsukamoto has worked with leading companies in the electronics industry, including Panasonic Corporation and Matsushita Electronics Corporation. His expertise in solid-state technology has positioned him as a key figure in the development of advanced imaging solutions.

Collaborations

Tsukamoto has collaborated with notable colleagues, including Yoko Shigeta and Michiyo Ichikawa. Their combined efforts have contributed to the advancement of imaging technologies and innovations in the field.

Conclusion

Akira Tsukamoto's contributions to solid-state image sensors and distance measurement systems highlight his role as a leading inventor in the technology sector. His innovative patents and collaborations continue to influence advancements in imaging technology.