Samsung patents memory cell with a tube-shaped capacitor
Samsung describes a memory cell design that uses a cylindrical capacitor to store data. The capacitor features a tube-shaped electrode wrapped in insulating material, which is smaller than the width of the transistor's channel.
In the filing’s own words
A memory cell with a cylindrical capacitor. In some embodiments, a system includes: a field-effect transistor; and a capacitor, the capacitor including: a first conductive layer, forming a first electrode of the capacitor, the first conductive layer being a tube having an axis parallel to a first direction; an insulating layer, on an inner surface and an outer surface of the first conductive layer; and a second conductive layer, on an inner surface and an outer surface of the insulating layer, the second conductive layer forming a second electrode of the capacitor, the insulating layer having a maximum dimension, along a transverse direction, less than a channel width of the field-effect transistor, the transverse direction being perpendicular to an axis of the tube.
What exactly they claim (claim 1)
1. A system, comprising: a field-effect transistor; and a capacitor, the capacitor comprising: a first conductive layer, forming a first electrode of the capacitor, the first conductive layer being a tube having an axis parallel to a first direction; an insulating layer, on an inner surface and an outer surface of the first conductive layer; and a second conductive layer, on an inner surface and an outer surface of the insulating layer, the second conductive layer forming a second electrode of the capacitor, the insulating layer having a maximum dimension, along a transverse direction, less than a channel width of the field-effect transistor, the transverse direction being perpendicular to an axis of the tube.
Facts
- Company
- Samsung (Samsung Electronics Co., Ltd.)
- Official title
- MEMORY CELL WITH CYLINDRICAL CAPACITOR
- Publication number
- US20260323912A1
- Application number
- 19415767
- Filed
- Dec 10, 2025
- Published
- Oct 15, 2026
- Inventors
- 6
- Claims
- 20
Classified under
H10B 12/30 Electricity & electronicsH10B 12/03 Electricity & electronicsH10B 12/05 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.