K
Ken Nakajima
Researcher at NEC
Publications - 34
Citations - 365
Ken Nakajima is an academic researcher from NEC. The author has contributed to research in topics: Electron-beam lithography & Resist. The author has an hindex of 10, co-authored 34 publications receiving 364 citations.
Papers
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Journal ArticleDOI
A 30-ns 256-Mb DRAM with a multidivided array structure
Tadahiko Sugibayashi,Toshio Takeshima,Isao Naritake,Tatsuya Matano,Hiroshi Takada,Yoshiharu Aimoto,K. Furuta,Mamoru Fujita,Takanori Saeki,Hiroshi Sugawara,T. Murotani,Naoki Kasai,K. Shibahara,Ken Nakajima,Hiromitsu Hada,Takehiko Hamada,N. Aizaki,T. Kunio,E. Kakehashi,K. Masumori,Takaho Tanigawa +20 more
TL;DR: In this paper, a 256-Mb DRAM with a multidivided array structure has been developed and fabricated with 0.25-mu m CMOS technology, which features 30-ns access time, 16-b I/Os, and a 35-mA operating current at a 60-ns cycle time.
Proceedings ArticleDOI
A Gbit-scale DRAM stacked capacitor technology with ECR MOCVD SrTiO/sub 3/ and RIE patterned RuO/sub 2/TiN storage nodes
Pierre-Yves Lesaicherre,Shintaro Yamamichi,H. Yamaguchi,Koichi Takemura,Hirohito Watanabe,Ken Tokashiki,K. Satoh,Toshiyuki Sakuma,M. Yoshida,S. Ohnishi,Ken Nakajima,K. Shibahara,Yoichi Miyasaka,Haruhiko Ono +13 more
TL;DR: In this article, a new stacked capacitor technology with high permittivity ECR MOCVD SrTiO/sub 3/ films was developed for Gigabit-scale DRAMs.
Journal ArticleDOI
A 0.25-/spl mu/m CMOS 0.9-V 100-MHz DSP core
M. Izumikawa,H. Igura,Koichiro Furuta,Hiroshi Ito,H. Wakabayashi,Ken Nakajima,Tohru Mogami,Tadahiko Horiuchi,Masakazu Yamashina +8 more
TL;DR: In this article, a 0.25-/spl mu/m CMOS 0.9-V DSP core is described, which is composed of a 2mW 16-b multiplier-accumulator and a 1.5mW 8-kb SRAM.
Proceedings ArticleDOI
A 4-level storage 4 Gb DRAM
T. Murotani,Isao Naritake,Tatsuya Matano,T. Ohtsuki,Naoki Kasai,H. Koga,K. Koyama,Ken Nakajima,H. Yamaguchi,Hirohito Watanabe,T. Okuda +10 more
TL;DR: In this article, a charge-coupling sense amplifier, charge-sharing restore, and time-shared sensing increase speed and reduce sense-circuit area for 4 Gb DRAM.
Proceedings ArticleDOI
An ECR MOCVD (Ba,Sr)TiO/sub 3/ based stacked capacitor technology with RuO/sub 2//Ru/TiN/TiSi/sub x/ storage nodes for Gbit-scale DRAMs
Shintaro Yamamichi,Pierre-Yves Lesaicherre,H. Yamaguchi,Koichi Takemura,Shuji Sone,Hisato Yabuta,K. Sato,T. Tamura,Ken Nakajima,S. Ohnishi,Ken Tokashiki,Yoshihiro Hayashi,Yoshitake Kato,Yoichi Miyasaka,M. Yoshida,Haruhiko Ono +15 more
TL;DR: In this paper, a high dielectric constant (Ba,Sr)TiO/sub 3/ [BST] based stacked capacitor with new RuO/Sub 2/Ru/TiN/TiSi/sub x/ storage nodes was developed for Gbit-scale DRAMs.