公开(公告)号：US20180096724A1

公开(公告)日：2018-04-05

申请号：US15550463

申请日：2016-03-01

Applicant: NEC Corporation

Inventor： Makoto MIYAMURA ,  Noboru SAKIMURA ,  Yukihide TSUJI ,  Ryusuke NEBASHI ,  Tadahiko SUGIBAYASHI

IPC: G11C13/00 ,  H01L27/24

CPC classification number: G11C13/004 ,  G06F7/00 ,  G06F7/544 ,  G11C13/0002 ,  G11C13/003 ,  G11C13/0064 ,  G11C13/0069 ,  G11C29/12015 ,  G11C29/50008 ,  G11C29/52 ,  G11C2013/0073 ,  G11C2029/5004 ,  G11C2213/75 ,  H01L27/2445 ,  H01L27/2481

Abstract: In order to provide a crossbar switch type memory circuit designed to be usable in normal circumstances even when a resistance change element is in an adverse state, the present invention is provided with: a first unit including a first column wiring to which one end of a first resistance change element is connected, a first power supply-side transistor for controlling the connection of the first column wiring and a power supply node, a first ground-side transistor, of a reverse operation type to the first power supply-side transistor, for controlling the connection of the first column wiring and a ground node, and a first polarity control line for causing the first power supply-side transistor or the first ground-side transistor to turn on and the other to turn off by a polar signal from a polar signal terminal, the first polarity control line being connected to the control terminals of the first power supply-side transistor and first ground-side transistor; a second unit including a second column wiring to which one end of a second resistance change element is connected, a second power supply-side transistor, of the same operation type as the first power supply-side transistor, for controlling the connection of the second column wiring and the power supply node, a second ground-side transistor, of a reverse operation type to the second power supply-side transistor, for controlling the connection of the second column wiring and the ground node, a logic inversion circuit for inverting the polarity of the polar signal from the polar signal terminal and outputting the polarity-inverted signal, and a second polarity control line for causing the second power supply-side transistor or the second ground-side transistor to turn on and the other to turn off by a polar signal from the logic inversion circuit, the second polarity control line being connected to the control terminals of the second power supply-side transistor and second ground-side transistor; and n row wirings (n: positive integer) to which the other ends of the first and second resistance change elements are connected.

公开(公告)号：US20180061890A1

公开(公告)日：2018-03-01

申请号：US15561586

申请日：2016-04-06

Applicant: NEC Corporation

Inventor： Munehiro TADA ,  Tadahiko SUGIBAYASHI

IPC: H01L27/24 ,  H01L45/00

CPC classification number: H01L27/2445 ,  G11C13/0035 ,  H01L27/105 ,  H01L45/085 ,  H01L45/1233 ,  H01L45/1266 ,  H01L45/145 ,  H01L45/146 ,  H01L45/16 ,  H01L45/1683

Abstract: In the cases of performing programming by forming a two-terminal-type variable resistance element on a semiconductor device, it has been difficult to control the programming, and malfunctions have often occurred. This switching element includes at least a first variable resistance element, a second variable resistance element, a first rectifying element, and a second rectifying element, one end of the first variable resistance element and one end of the second variable resistance element are respectively connected to one end of the first rectifying element and one end of the second rectifying element, and each of the rectifying elements has two terminals.