Patent ID: 11899198
Assignee: APPLIED MATERIALS, INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 17:
18. A method of adjusting or selecting a phase shift between pixels in digital lithography systems, the method comprising:
projecting a first light beam onto a first spatial light modulator pixel, wherein the first spatial light modulator pixel directs the first light beam onto a substrate during a digital lithography process;
projecting a second light beam onto a second spatial light modulator pixel, wherein the second spatial light modulator pixel directs the second light beam onto the substrate during the digital lithography process, and the second spatial light modulator pixel is adjacent to the first spatial light modulator pixel in an array of spatial light modulator pixels; and
controlling a wavelength of the first light beam and/or a wavelength of the second light beam based on an optical path difference between the first light beam and the second light beam to produce a preselected phase shift between the first light beam and the second light beam on the substrate.