US 12,334,147 B2
First fire operation for ovonic threshold switch selector
Elia Ambrosi, Hsinchu (TW); Cheng-Hsien Wu, Hsinchu (TW); Hengyuan Lee, Hsinchu County (TW); Chien-Min Lee, Hsinchu County (TW); and Xinyu Bao, Fremont, CA (US)
Assigned to Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu (TW)
Filed by Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu (TW)
Filed on Feb. 19, 2024, as Appl. No. 18/581,340.
Application 18/581,340 is a continuation of application No. 17/826,180, filed on May 27, 2022, granted, now 11,955,173.
Prior Publication US 2024/0194257 A1, Jun. 13, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G11C 13/00 (2006.01)
CPC G11C 13/003 (2013.01) [G11C 2213/72 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A first fire operation for an ovonic threshold switch (OTS) selector, comprising:
providing a series of voltage pulses, wherein a peak amplitude of each voltage pulse is higher than a peak amplitude of a previous one of the voltage pulses; and
sequentially sending the voltage pulses to the OTS selector, until the peak amplitude of a latest one of the voltage pulses reaches a pre-determined maximum value ensuring initialization of the OTS selector, or until an output current of the OTS selector in response to a latest one of the voltage pulses reaches a target value indicative of initialization of the OTS selector.