Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Osamu Yokokoji"'
Publikováno v:
Liquid Crystals. 36:799-807
The synthesis and properties of (E)-α,β-difluorostilbene derivatives were studied. In particular, we investigated three suppression methods of (E)–(Z) isomerisation by shortening the molecular conjugation length, which included the introduction o
Publikováno v:
Liquid Crystals. 36:1-6
We have designed and synthesised the novel liquid crystal core structure, 2-phenyl-5,6-difluoro-1H-indene, based on preliminary calculation of the theoretical values of birefringence (Δn) and dielectric anisotropy (Δϵ). These compounds have been p
Publikováno v:
Liquid Crystals. 35:995-1003
The synthesis and properties of (S)‐(2‐methylbutyl)benzene derivative and (S)‐2‐phenylpropionic acid derivatives were studied with a view to their application on cholesteric liquid crystal devices. Compared with available chiral compounds the
Autor:
Takeo Ishibashi, Jianhai Jiang, Tetsuro Hanna, Yoko Takebe, Tomoharu Fujiwara, Teruhiko Kumada, Shinya Wakamizu, Takafumi Niwa, Osamu Yokokoji, Takuya Hagiwara, Mamoru Terai, Hideharu Kyouda
Publikováno v:
Journal of Photopolymer Science and Technology. 21:665-672
In this study, we focus on the controllability of a wafer bevel from adhesion and hydrophobicity viewpoints in order to solve the problems of film peeling and microdroplet formation around wafer bevels, which can result in pattern defects and degradi
Autor:
Naoki Man, Tetsuro Hanawa, Takuya Hagiwara, Yusuke Tanahashi, Kazuhiro Yoshikawa, Teruhiko Kumada, Mamoru Terai, Takeshi Matsunobu, Takeo Ishibashi, Osamu Yokokoji, Naoko Shirota
Publikováno v:
Journal of Photopolymer Science and Technology. 21:647-654
Non-topcoat (non-TC) resists, which blend hydrophobic additives into a resist polymer, have been proposed by vendors. To minimize the surface free energy, a hydrophobic additive segregates to the surface and forms a layer. The improvement of surface
Publikováno v:
Journal of Photopolymer Science and Technology. 19:573-578
We earlier developed new monocyclic fluoropolymers (FUGU) for F2 resist materials. But, it is necessary for FUGU to be improved in their characteristics, especially in the dry-etching resistance, in order to apply to ArF lithography at fine design ru
Autor:
Sasaki Takashi, Yoko Takebe, Osamu Yokokoji, Kiyoshi Fujii, Akihito Otoguro, Toshio Itani, Masataka Eda, Shigeo Irie
Publikováno v:
Journal of Photopolymer Science and Technology. 17:639-644
We earlier developed a series of fluoropolymers (FPRs) for use as first-generation 157-nm photoresist polymers. These FPRs have a partially fluorinated monocyclic structure and provide excellent transparency. However, their etching resistance is low
Autor:
Shigeo Irie, Seiichi Ishikawa, Takuya Hagiwara, Tamio Yamazaki, Takamitsu Furukawa, Toshiro Itani, Yasuhide Kawaguchi, Syun-ichi Kodama, Osamu Yokokoji, Isamu Kaneko, Yoko Takebe, Shinji Okada
Publikováno v:
Japanese Journal of Applied Physics. 42:3743-3747
Fluoropolymers are key materials for single layer resists of 157-nm lithography. We have been studying fluoropolymers to identify their potential for base resins of 157-nm photoresist. New monocyclic fluoropolymer resist which we developed have high
Autor:
Takuya Hagiwara, Toshiro Itani, Yasuhide Kawaguchi, Shunichi Kodama, Shigeo Irie, Osamu Yokokoji
Publikováno v:
Journal of Photopolymer Science and Technology. 16:557-564
Fluoropolymers are key materials for the single-layer resists used in 157-nm lithography. We have been studying fluoropolymers to determine their potential for use as the base resin. We developed a polymer that has high transmittance and high dry-etc
Publikováno v:
Microelectronic Engineering. 83:1091-1093
We earlier developed new monocyclic fluoropolymers (FUGU) for F 2 resist materials. But, it is necessary for FUGU to improve of their characteristics, especially the dry-etching resistance, in order to apply for ArF lithography at fine design rules.