Tsutomu Imai is a notable inventor based in Anpachi-gun, Japan. He has made significant contributions to the field of integrated circuit manufacturing, holding a total of 4 patents. His work focuses on enhancing the efficiency and effectiveness of light detectors and solid-state imagers.

Latest Patents

One of Imai's latest patents is a method for manufacturing integrated circuits. This invention addresses the need for increased flatness of the surface of the light-receiving portion during the etching of the upper structural layer of a light detector. The method involves forming an aperture in a stack of layers on a substrate, which includes an underlayer, a light-receiving area pad, and an upper structural layer. The process consists of a light-receiving area pad etching step that maintains a high selectivity ratio between the upper structural layer and the light-receiving area pad, followed by an underlayer etching step that ensures a high selectivity ratio in relation to the underlayer. This innovative approach results in a flatter bottom surface of the aperture, leading to a more uniform amount of incident light in the plane of the light-receiving portion.

Another significant patent by Imai involves the manufacturing of micro lenses, which includes underlayer film and lens film etching steps. This solid-state imager features isolation regions covered with power supply lines, and a light-transmitting lens film that forms continuous convex portions above the isolation regions. Additionally, a light-transmitting material with a lower refractive index than that of the lens film is provided over the lens film, enhancing the overall performance of the device.

Career Highlights

Tsutomu Imai is currently employed at Sanyo Electric Co., Ltd., where he continues to innovate in the field of integrated circuits. His work has been instrumental in advancing technologies that rely on precise light detection and imaging.

Collaborations

Imai has collaborated with notable coworkers, including Seiji Kai and Tetsuya Yamada. Their combined expertise has contributed to the successful development of various technologies in the field.

Conclusion

Tsutomu Imai's contributions to integrated circuit manufacturing and light detection technologies are noteworthy. His innovative patents reflect a commitment to enhancing the performance and efficiency of electronic devices. Imai's work continues to influence

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