Takaharu Ohyama

Title: Takaharu Ohyama: Innovator in Optical Semiconductor Technology

Introduction

Takaharu Ohyama is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of optical semiconductor devices, holding a total of 4 patents. His work focuses on reducing crosstalk between light receiving elements, which is crucial for enhancing the performance of optical devices.

Latest Patents

One of Ohyama's latest patents involves an optical semiconductor device designed to minimize crosstalk, or leakage current, between light receiving elements. This invention features a back surface electrode that acts as a mirror-like thin film, effectively suppressing crosstalk to adjacent elements. By implementing a patterned back surface electrode or an ohmic electrode beneath an insulating film, the contact resistance on the back surface is significantly reduced. The use of a two-dimensional arrangement of optical semiconductor elements, combined with the mirror-like thin film, further enhances the reduction of crosstalk. Additionally, housing the optical semiconductor elements in a highly hermetic condition protects them from external environmental factors.

Career Highlights

Throughout his career, Takaharu Ohyama has worked with notable companies, including Nippon Telegraph and Telephone Corporation and NTT Electronics Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in optical semiconductor technology.

Collaborations

Ohyama has collaborated with esteemed colleagues such as Yoshiyuki Doi and Ikuo Ogawa. Their combined expertise has contributed to advancements in the field of optical semiconductors.

Conclusion

Takaharu Ohyama's work in optical semiconductor devices showcases his dedication to innovation and technology. His patents reflect a commitment to improving the efficiency and reliability of optical systems. His contributions continue to influence the industry and pave the way for future advancements.