US 11,670,362 B2
Sub-word line driver placement for memory device
Yi-Tzu Chen, Hsinchu (TW); Ching-Wei Wu, Caotun Town (TW); Hau-Tai Shieh, Hsinchu (TW); and Hung-Jen Liao, Hsinchu (TW)
Assigned to Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu (TW)
Filed by Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu (TW)
Filed on Mar. 4, 2022, as Appl. No. 17/687,272.
Application 17/687,272 is a continuation of application No. 17/081,799, filed on Oct. 27, 2020, granted, now 11,361,812.
Prior Publication US 2022/0199145 A1, Jun. 23, 2022
Int. Cl. G11C 11/40 (2006.01); G11C 11/408 (2006.01); G11C 5/02 (2006.01); G11C 5/06 (2006.01); G11C 11/4093 (2006.01)
CPC G11C 11/4085 (2013.01) [G11C 5/025 (2013.01); G11C 5/06 (2013.01); G11C 11/4093 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A memory system comprising:
a plurality of memory cells including a first group of memory cells, a second group of memory cells, and a third group of memory cells;
a common word line driver to apply a common control signal to the plurality of memory cells through a common word line extending along a direction;
a first sub-word line driver to apply a first control signal to the first group of memory cells through a first sub-word line extending along the direction, wherein the first sub-word line driver is adjacent to the common word line driver;
a second sub-word line driver to apply a second control signal to the second group of memory cells through a second sub-word line extending along the direction; and
a third sub-word line driver to apply a third control signal to the third group of memory cells through a third sub-word line extending along the direction, wherein the third sub-word line driver is adjacent to the second sub-word line driver,
wherein the first sub-word line driver is disposed between the common word line driver and the first group of memory cells, and wherein the second sub-word line driver and the third sub-word line driver are disposed between the second group of memory cells and the third group of memory cells.