- Patent Title: Large area high resolution feature reduction lithography technique
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Application No.: US16276860Application Date: 2019-02-15
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Publication No.: US11042098B2Publication Date: 2021-06-22
- Inventor: Arvinder Chadha
- 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: G03F7/213
- IPC: G03F7/213 ; G03F7/20

Abstract:
Embodiments described herein provide a method of large area lithography. One embodiment of the method includes projecting at least one incident beam to a mask in a propagation direction of the at least one incident beam. The mask having at least one period of a dispersive element that diffracts the incident beam into order mode beams having one or more diffraction orders with a highest order N greater than 1. The one or more diffraction orders provide an intensity pattern in a medium between the mask and a substrate having a photoresist layer disposed thereon. The intensity pattern includes a plurality of intensity peaks defined by sub-periodic patterns of the at least one period. The intensity peaks write a plurality of portions in the photoresist layer such that a number of the portions in the photoresist layer corresponding to the at least one period is greater than N.
Public/Granted literature
- US20200264518A1 LARGE AREA HIGH RESOLUTION FEATURE REDUCTION LITHOGRAPHY TECHNIQUE Public/Granted day:2020-08-20
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