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Advanced TFT SRAM cell technology using a phase-shift lithography

Authors :
Yamanaka, Toshiaki
Hashimito, Takashi
Hasegawa, Norio
Tanaka, Toshihiko
Hashimoto, Naotaka
Shimizu, Akihiro
Ohki, Nagatoshi
Ishibashi, Koichiro
Sasaki, Katsuro
Nishida, Takashi
Mine, Toshiyuki
Takeda, Eiji
Nagano, Takashiro
Source :
IEEE Transactions on Electron Devices. July, 1995, Vol. 42 Issue 7, p1305, 9 p.
Publication Year :
1995

Abstract

A high-density and high speed SRAM cell is designed and manufactured using an advanced TFT memory cell technology and a phase-shift lithography that allows patterns with spaces less than 0.25 micro m to be made using a conventional stepper. The cell area is very small but the functioning of the cell is stable. A leakage current of 2 fA/cell and an on-/off-current ratio of 4.6 multiplied by 10 to 6th power are obtained with polysilicon PMOS TFT in a memory cell.

Details

ISSN :
00189383
Volume :
42
Issue :
7
Database :
Gale General OneFile
Journal :
IEEE Transactions on Electron Devices
Publication Type :
Academic Journal
Accession number :
edsgcl.17612190