Patent ID: 11921419
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 9:
10. A method of fabricating a semiconductor device, the method comprising:
performing an optical proximity correction (OPC) operation on a layout; and
forming a photoresist pattern on a substrate, using a photomask which is manufactured with the layout corrected by the OPC operation,
wherein the OPC operation comprises:
generating a target pattern comprising a first edge, a second edge, a third edge, and a fourth edge;
performing a first OPC operation, based on the target pattern, to generate a first correction pattern;
measuring a first target error by comparing a first simulation image of the first correction pattern with the target pattern;
compensating each of the first to fourth edges of the target pattern, based on the first target error, to generate a retarget pattern; and
performing a second OPC operation, based on the retarget pattern, to generate a second correction pattern, and

wherein the method further comprises:
forming a device isolation layer on the substrate to define an active pattern;
forming a gate electrode to cross the active pattern;
forming a first source/drain region and a second source/drain region in an upper portion of the active pattern, the first source/drain region being adjacent to a first side of the gate electrode and the second source/drain region being adjacent to a second side of the gate electrode opposite to the first side;
forming a bit line electrically coupled to the first source/drain region;
forming a contact electrically coupled to the second source/drain region;
forming a metal layer on the contact patterning the metal layer using the photoresist pattern to form a landing pad; and
forming a data storing element on the landing pad.