Samsung patents 3D ferroelectric memory stack
Samsung has been granted a patent for a 3D memory device that stacks multiple layers of insulating material on a base. It uses a ferroelectric layer, which holds an electric charge, positioned between gate electrodes and a channel layer to store data.
In the filing’s own words
Provided is a three-dimensional (3D) ferroelectric memory device. The 3D ferroelectric memory device includes a substrate, a plurality of insulating layers stacked on the substrate, a plurality of gate electrodes between the plurality of insulating layers, a plurality of gate insulating layers in contact with the plurality of gate electrodes, a plurality of intermediate electrodes in contact with the plurality of gate insulating layers, a ferroelectric layer in contact with the plurality of intermediate electrodes and the plurality of insulating layers, and a channel layer in contact with the ferroelectric layer.
What exactly they claim (claim 1)
1. A three-dimensional (3D) ferroelectric memory device comprising: a substrate; a plurality of insulating layers stacked on an upper surface of the substrate; a plurality of gate electrodes between the plurality of insulating layers; a plurality of gate insulating layers on corresponding side surfaces of the plurality of gate electrodes; a ferroelectric layer on side surfaces of the plurality of insulating layers; a plurality of intermediate electrodes between the plurality of gate insulating layers and the ferroelectric layer; and a channel layer on the ferroelectric layer, wherein the plurality of gate insulating layers are between the plurality of gate electrodes and the plurality of intermediate electrodes, and wherein the ferroelectric layer is between the plurality of intermediate electrodes and the channel layer.
Facts
- Company
- Samsung (Samsung Electronics Co., Ltd.)
- Official title
- Three-dimensional ferroelectric memory device
- Patent number
- US12764964B2
- Application number
- 18491161
- Filed
- Oct 20, 2023
- Granted
- Oct 13, 2026
- Inventors
- 4
- Claims
- 20
Classified under
H10B 51/20 Electricity & electronicsH10B 51/10 Electricity & electronicsH10D 30/701 Electricity & electronicsH10D 64/033 Electricity & electronicsH10D 64/689 Electricity & electronicsMore from Samsung in Chips & hardware
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.