Invention Grant
- Patent Title: Non-volatile memory device employing a deep trench capacitor
-
Application No.: US15665979Application Date: 2017-08-01
-
Publication No.: US10083967B2Publication Date: 2018-09-25
- Inventor: Eduard A. Cartier , Herbert L. Ho , Donghun Kang
- Applicant: GLOBALFOUNDRIES INC.
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES INC.
- Current Assignee: GLOBALFOUNDRIES INC.
- Current Assignee Address: KY Grand Cayman
- Agency: Scully, Scott, Murphy & Presser, PC
- Main IPC: H01L21/02
- IPC: H01L21/02 ; H01L21/8242 ; H01L29/92 ; H01L27/108 ; H01L49/02 ; H01L21/764

Abstract:
A non-volatile memory device with a programmable leakage can be formed employing a trench capacitor. After formation of a deep trench, a metal-insulator-metal stack is formed on surfaces of the deep trench employing a dielectric material that develops leakage path filaments upon application of a programming bias voltage. A set of programming transistors and a leakage readout device can be formed to program, and to read, the state of the leakage level. The non-volatile memory device can be formed concurrently with formation of a dynamic random access memory (DRAM) device by forming a plurality of deep trenches, depositing a stack of an outer metal layer and a node dielectric layer, patterning the node dielectric layer to provide a first node dielectric for each non-volatile memory device that is thinner than a second node dielectric for each DRAM device, and forming an inner metal layer.
Public/Granted literature
- US20170358581A1 NON-VOLATILE MEMORY DEVICE EMPLOYING A DEEP TRENCH CAPACITOR Public/Granted day:2017-12-14
Information query
IPC分类: