Patent ID: 9437815
Filing Date: 2016-09-06
CPC Classification: H01L

Claim Text:
1. A method of making a resistive switching memory device, the method comprising: a) forming a plurality of resistive memory cells arranged in a plurality of array blocks, wherein each resistive memory cell is configured to be programmed to a low resistance state by application of a program voltage in a forward bias direction, and to be erased to a high resistance state by application of an erase voltage in a reverse bias direction; b) forming a plurality of anode plates corresponding to the plurality of array blocks, wherein each resistive memory cell comprises a resistive storage element having an anode coupled to one of the anode plates; c) forming an inactive ring surrounding the plurality of anode plates, wherein the inactive ring comprises a same material as each of the plurality of anode plates; and d) forming a plurality of boundary cells located under the inactive ring.