Invention Grant
US07692951B2 Resistance change memory device with a variable resistance element formed of a first and a second composite compound
有权
具有由第一和第二复合化合物形成的可变电阻元件的电阻变化存储器件
- Patent Title: Resistance change memory device with a variable resistance element formed of a first and a second composite compound
- Patent Title (中): 具有由第一和第二复合化合物形成的可变电阻元件的电阻变化存储器件
-
Application No.: US12140818Application Date: 2008-06-17
-
Publication No.: US07692951B2Publication Date: 2010-04-06
- Inventor: Haruki Toda , Koichi Kubo
- Applicant: Haruki Toda , Koichi Kubo
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Main IPC: G11C11/00
- IPC: G11C11/00

Abstract:
A resistance change memory device including: a semiconductor substrate; at least one cell array formed above the semiconductor substrate, each memory cell having a stack structure of a variable resistance element and an access element, the access element having such an off-state resistance value in a certain voltage range that is ten times or more as high as that in a select state; and a read/write circuit formed on the semiconductor substrate as underlying the cell array, wherein the variable resistance element comprises a recording layer formed of a first composite compound expressed by AxMyOz (where “A” and “M” are cation elements different from each other; “O” oxygen; and 0.5≦x≦1.5, 0.5≦y≦2.5 and 1.5≦z≦4.5) and a second composite compound containing at least one transition element and a cavity site for housing a cation ion.
Public/Granted literature
- US20080310211A1 RESISTANCE CHANGE MEMORY DEVICE Public/Granted day:2008-12-18
Information query