US 12,190,946 B1
Read disturb mitigation for non-linear polar material based multi-capacitor bit-cell
Rajeev Kumar Dokania, Beaverton, OR (US); Mustansir Yunus Mukadam, Seattle, WA (US); Tanay Gosavi, Portland, OR (US); James David Clarkson, El Sobrante, CA (US); Neal Reynolds, Bremerton, WA (US); Amrita Mathuriya, Portland, OR (US); and Sasikanth Manipatruni, Portland, OR (US)
Assigned to Kepler Computing Inc., San Francisco, CA (US)
Filed by Kepler Computing Inc., San Francisco, CA (US)
Filed on Jun. 6, 2022, as Appl. No. 17/805,664.
Application 17/805,664 is a continuation of application No. 17/805,438, filed on Jun. 3, 2022.
This patent is subject to a terminal disclaimer.
Int. Cl. G11C 11/22 (2006.01); G11C 11/401 (2006.01); G11C 11/419 (2006.01)
CPC G11C 11/419 (2013.01) [G11C 11/22 (2013.01); G11C 11/221 (2013.01); G11C 11/2275 (2013.01); G11C 11/401 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a transistor having a gate terminal coupled to a word-line, a source terminal couple to a bit-line, and a drain terminal coupled to a storage node;
a plurality of capacitors having a first terminal coupled to the storage node, wherein a second terminal of an individual capacitor of the plurality of capacitors is coupled to an individual plate-line; and
one or more circuitries to perform a first read operation during a first phase on a selected capacitor of the plurality of capacitors, wherein the one or more circuitries is to perform a second read operation during a second phase, wherein the second read operation mitigates read disturb effects on unselected capacitors of the plurality of capacitors, wherein the one or more circuitries is to ramp a voltage on a plate-line coupled to the selected capacitor in a staircase fashion to a supply voltage level during the first phase, wherein the one or more circuitries is to perform a writeback operation after the second read operation, and wherein the writeback operation and the second read operation are separated by one or more cycles where the word-line, the bit-line, and the individual plate-line are pulled to ground.