Research Fellows and Engineering Fellows

Masao Tomikawa PhD

Department :
Electronic & Imaging Materials Research Laboratories
Area of expertise :
Electronic materials design

My research philosophy

When I studied things like photosensitization of celluloses in school, I read an academic paper by Toray's researchers on photosensitive polyimides. Because there were many academic papers on new condensation reactions to obtain polyimide and polyamides at the time, I had this vague desire to study condensation macromolecules. Fortunately I was assigned to a department in charge of R&D on polyimide coating agents, and as the company was planning to expand the photosensitive polyimide business, I was able to do many things to my heart's content for sometime after joining the company. Thereafter, I was mainly involved in the development of products meeting the customers' needs. The experiences I had gained earlier proved useful.
Problems faced in the course of product realization allow us to examine and analyze things at deeper levels than possible in the basic research stage. In many cases the cause of the problem is something that is seemingly unrelated. Particularly when we conduct R&D in a corporation, it is important to take interest in various things and create drawers in our brain where we store different kinds of technologies. Seeing is believing. I still conduct experiments and write patent applications whenever I have time. I want to remain an active researcher for the rest of my life.

Key academic papers

1992 PHOTO-REACTION OF IONIC BONDING PHOTOSENSITIVE POLYIMIDE
Tomikawa M, Asano M, Ohbayashi G, Hiramoto H, Morishima Y, and Kamachi M; Journal Photopolymer Science & Technology, 5, 343 (1992)
1994 Synthesis and photo-induced solution properties of new rigid-rod polyimides
TOMIKAWA M. (1) ; HARRIS F. W. (2) ; CHENG S. Z. D. (2) ; GALENTIER E. (3) ;Reactive Functional Polymer,30、101 (1994)
2007 Effect of Photo-active Compound Structure on Photosensitivity of Positive Photosensitive Polyimide
Tomikawa M, Yuba, T., Ohbayashi, G., Kim J-H, Kim Y-H, and Kim T:
High Performance Polymers, 18, 603 (2007)
2007 Development of Low Temperature Curing Polyimide for Buffer Coat of Next Generation Semiconductor
Masao Tomikawa JETI (Japan Energy & Technology Intelligence), Vol.55, No.13, p.30 (2007)
Development of Positive-type Photosensitive Polyimide and Application to 300mm Process
Masao Tomikawa, Clean Technology, Vol.17, No.12, p.25 (2007)
2009 Novel Partial Esterification Reaction in Poly(amic acid) and Its Application for Positive-Tone Photosensitive Polyimide Precursor
Tomikawa M, Yoshida S and Okamoto N; Polymer Journal 41, 604 (2009)
2011 Novel high Refractice index positive-Tone Photosensitive Polyimide for microlens of image sensors
Tomikawa M, Suwa M, Niwa H, and Minamihashi K; High Performance Polymers. 23, 66 (2011)
2015 2015 Development of Photosensitive Polyimide Coatings for Packaging Applications
M. Tomikawa, H. Ohnishi and R. Okuda, J. Photopolym. Sci. & Technol., 28, 73 (2015)

Third-party awards

1991 The Award of the Society of Polymer Science
2010 The Chemical Society of Japan Award for Technical Development for 2009
2010 Local Commendation for Invention of Kinki "Shikoku Bureau of Economy, Trade & Industry Director's Prize"
2015 National Commendation for Invention "The Invention Prize"

Key invited lecturers

2008 The 17th Polymer Materials Forum
2009 The 28th Noyori Forum
The 17th Japan Polyimide & Aromatic Polymer conference
2013 JIEP Advanced Electronics Packaging Technology Symposium