Invention Grant
- Patent Title: Reserving spatial light modulator sections to address field non-uniformities
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Application No.: US16597718Application Date: 2019-10-09
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Publication No.: US10705433B2Publication Date: 2020-07-07
- Inventor: Joseph R. Johnson , Thomas L. Laidig , Christopher Dennis Bencher
- Applicant: Applied Materials, Inc.
- Applicant Address: US CA Santa Clara
- Assignee: APPLIED MATERIALS, INC.
- Current Assignee: APPLIED MATERIALS, INC.
- Current Assignee Address: US CA Santa Clara
- Agency: Patterson + Sheridan LLP
- Main IPC: G03F7/20
- IPC: G03F7/20 ; G03B27/70

Abstract:
Embodiments of the present disclosure generally provide improved photolithography systems and methods using a digital micromirror device (DMD). The DMD comprises columns and rows of micromirrors disposed opposite a substrate. Light beams reflect off the micromirrors onto the substrate, resulting in a patterned substrate. Certain subsets of the columns and rows of micromirrors may be positioned to the “off” position, such that they dump light, in order to correct for uniformity errors, i.e., features larger than desired, in the patterned substrate. Similarly, certain subsets of the columns and rows of micromirrors may be defaulted to the “off” position and selectively allowed to return to their programmed position in order to correct for uniformity errors, i.e., features smaller than desired, in the patterned substrate.
Public/Granted literature
- US20200073253A1 RESERVING SPATIAL LIGHT MODULATOR SECTIONS TO ADDRESS FIELD NON-UNIFORMITIES Public/Granted day:2020-03-05
Information query
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