US 11,903,185 B2
Vertical memory device
Kun-Young Lee, Seoul (KR); and Sun-Young Kim, Gyeonggi-do (KR)
Assigned to SK hynix Inc., Gyeonggi-do (KR)
Filed by SK hynix Inc., Gyeonggi-do (KR)
Filed on Dec. 22, 2021, as Appl. No. 17/560,050.
Application 17/560,050 is a continuation of application No. 16/720,760, filed on Dec. 19, 2019, granted, now 11,233,060.
Claims priority of application No. 10-2019-0084686 (KR), filed on Jul. 12, 2019.
Prior Publication US 2022/0115378 A1, Apr. 14, 2022
Int. Cl. H10B 12/00 (2023.01)
CPC H10B 12/373 (2023.02) [H10B 12/0383 (2023.02); H10B 12/09 (2023.02); H10B 12/50 (2023.02)] 11 Claims
OG exemplary drawing
 
1. A method for fabricating a memory device, comprising:
forming a bit line extending vertically from a peripheral circuit portion;
forming a capacitor surrounding the bit line;
forming a transistor including a vertical active layer extending vertically from a first side of the capacitor and a word line surrounding the vertical active layer; and
forming a plate line coupled to a second side of the capacitor, and extending vertically from the peripheral circuit portion,
wherein the forming of the transistor comprises:
forming a first source/drain layer coupled to the first side of the capacitor;
forming a vertical channel layer epitaxial-grown vertically from the first source/drain layer; and
forming a second source/drain layer epitaxial-grown horizontally from the vertical channel layer, and coupled to the bit line.