Patent ID: 8551852
Filing Date: 2013-10-08
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor memory device, comprising: forming a first conductive film on a substrate; forming a first diode on the first conductive film, the first diode being configured to pass a current downward; forming a first variable resistance film on the first diode; dividing the first conductive film, the first diode, and the first variable resistance film along a first direction; forming a second conductive film on the first variable resistance film; forming a second diode on the second conductive film, the second diode being configured to pass a current upward; forming a second variable resistance film on the second diode; and dividing an upper portion of the first diode, the first variable resistance film, the second conductive film, the second diode, and the second variable resistance film along a second direction crossing the first direction, without dividing a lower portion of the first diode along the second direction.