Invention Grant
- Patent Title: Method for driving a nonvolatile semiconductor memory device
- Patent Title (中): 用于驱动非易失性半导体存储器件的方法
-
Application No.: US13857634Application Date: 2013-04-05
-
Publication No.: US08693255B2Publication Date: 2014-04-08
- Inventor: Jun Fujiki
- Applicant: Kabushiki Kaisha Toshiba
- 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.
- Priority: JP2007-252137 20070927
- Main IPC: G11C11/34
- IPC: G11C11/34

Abstract:
A method for driving a nonvolatile semiconductor memory device is provided. The nonvolatile semiconductor memory device has source/drain diffusion layers spaced from each other in a surface portion of a semiconductor substrate, a laminated insulating film formed on a channel between the source/drain diffusion layers and including a charge storage layer, and a gate electrode formed on the laminated insulating film, the nonvolatile semiconductor memory device changing its data memory state by injection of charges into the charge storage layer. The method includes, before injecting charges to change the data memory state into the charge storage layer: injecting charges having a polarity identical to that of the charges to be injected; and further injecting charges having a polarity opposite to that of the injected charges.
Public/Granted literature
- US20130242662A1 METHOD FOR DRIVING A NONVOLATILE SEMICONDUCTOR MEMORY DEVICE Public/Granted day:2013-09-19
Information query