H
Hidefumi Yabara
Researcher at Fujitsu
Publications - 6
Citations - 196
Hidefumi Yabara is an academic researcher from Fujitsu. The author has contributed to research in topics: Charged particle beam & Deflection (engineering). The author has an hindex of 5, co-authored 6 publications receiving 196 citations.
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Patent
Charged-particle-beam exposure device and charged-particle-beam exposure method
Takemoto Akio,Yoshihisa Ooaeh,Tomohiko Abe,Hiroshi Yasuda,Takamasa Satoh,Hideki Nasuno,Hidefumi Yabara,Kenichi Kawakami,Kiichi Sakamoto,Tomohiro Sakazaki,Isamu Seto,Masami Takigawa,Tatsuro Ohkawa +12 more
TL;DR: In this article, a method of exposing a wafer to a charged-particle beam by directing to the wafer the charged particle beam deflected by a deflector includes the steps of arranging a plurality of first marks at different heights.
Patent
Method of and system for charged particle beam exposure
Takamasa Satoh,Hiroshi Yasuda,Junichi Kai,Yoshihisa Oae,Hisayasu Nishino,Kiichi Sakamoto,Hidefumi Yabara,Isamu Seto,Masami Takigawa,Akio Yamada,Soichiro Arai,Tomohiko Abe,Takashi Kiuchi,Kenichi Miyazawa +13 more
TL;DR: In this paper, the setting time during a step change in the output of an amplifier is reduced by switching resistance between the amplifier and a deflector, and the response speed is improved by adding auxiliary deflection coils of one or two turns.
Patent
Charged-particle-beam exposure device and method capable of high-speed data reading
TL;DR: In this article, a data processing unit inserts data-position-adjustment data into the control data for each exposure, and a first data-storage unit stores the data, inserted with the data position adjustment data, and outputs the data at a time of the exposure process.
Patent
Digital-to-analog converter having a circuit for compensating for variation in output dependent on temperature change
TL;DR: In this paper, a D/A converter with constant-current output circuits, provided for the n bits of the digital signal, for selectively generating n constant currents on the basis of the n-bits of digital signals, is described.
Patent
Method of providing changed particle beam exposure in which representative aligning marks on an object are detected to calculate an actual position to perform exposure
Takamasa Satoh,Hiroshi Yasuda,Junichi Kai,Yoshihisa Oae,Hisayasu Nishino,Kiichi Sakamoto,Hidefumi Yabara,Isamu Seto,Masami Takigawa,Akio Yamada,Soichiro Arai,Tomohiko Abe,Takashi Kiuchi,Kenichi Miyazawa +13 more
TL;DR: In this paper, a method for providing charged particle beam exposure onto an object having a plurality of chip areas with a pluralityof aligning marks formed in correspondence to each of said chip areas is presented.