Takashi Miyamatsu

Title: Takashi Miyamatsu: Innovator in Immersion Exposure Technology

Introduction

Takashi Miyamatsu is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of immersion exposure technology, particularly in the development of innovative liquids and methods that enhance the performance of photolithography processes.

Latest Patents

Miyamatsu holds two notable patents. The first patent focuses on a liquid for immersion exposure and an immersion exposure method. This immersion exposure liquid exhibits a high refractive index, prevents elution and dissolution of a photoresist film or its upper layer film component, and reduces defects during the formation of a resist pattern. The liquid is designed for use in immersion exposure devices, where it is placed between a lens of a projection optical system and the substrate. It includes an alicyclic hydrocarbon compound or a cyclic hydrocarbon compound containing a silicon atom in the ring structure.

The second patent involves a sulfonium salt compound, which excels in transparency to deep ultraviolet rays at a wavelength of 220 nm or less. This compound demonstrates well-balanced performance in terms of sensitivity, resolution, pattern form, line edge roughness (LER), and storage stability when used as a photoacid generator. The positive-tone radiation-sensitive resin composition that includes this photoacid generator is also a key aspect of this patent.

Career Highlights

Miyamatsu is currently employed at JSR Corporation, where he continues to innovate in the field of photolithography. His work has been instrumental in advancing the technology used in semiconductor manufacturing and other applications that require precise patterning.

Collaborations

Throughout his career, Miyamatsu has collaborated with notable colleagues, including Yong Wang and Hirokazu Niwata. These collaborations have further enriched his research and development efforts, leading to groundbreaking advancements in immersion exposure technology.

Conclusion

Takashi Miyamatsu's contributions to immersion exposure technology have positioned him as a key figure in the field. His innovative patents and ongoing work at JSR Corporation continue to influence the future of photolithography and semiconductor manufacturing.