Patent ID: 11914302
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A lithography method in semiconductor fabrication, comprising:
generating a plurality of first drops of a target material through a plurality of first nozzles arranged in a first row to form a first elongated droplet;
generating a first laser pulse to convert the first elongated droplet into a first plasma that generates a first extreme ultraviolet (EUV) radiation;
generating a plurality of second drops of the target material through a plurality of second nozzles arranged in a second row different than the first row of the plurality of first nozzles to form a second elongated droplet, wherein a longitudinal axis of the second elongated droplet is oblique to a longitudinal axis of the first elongated droplet;
generating a second laser pulse to convert the second elongated droplet into a second plasma that generates a second EUV radiation; and
exposing a semiconductor substrate to the first and second EUV radiations.