Invention Grant
- Patent Title: Methods for extreme ultraviolet mask defect mitigation by multi-patterning
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Application No.: US15014211Application Date: 2016-02-03
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Publication No.: US09673111B2Publication Date: 2017-06-06
- Inventor: Gek Soon Chua , Tan Soon Yoeng
- Applicant: GLOBALFOUNDRIES Singapore Pte. Ltd.
- Applicant Address: SG Singapore
- Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
- Current Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
- Current Assignee Address: SG Singapore
- Agency: Lorenz & Kopf, LLP
- Main IPC: H01L21/302
- IPC: H01L21/302 ; H01L21/66 ; H01L21/027 ; G03F1/84 ; H01L27/02 ; H01L21/3213

Abstract:
Methods for extreme ultraviolet (EUV) mask defect mitigation by using multi-patterning lithography techniques. In one exemplary embodiment, a method for fabricating an integrated circuit including identifying a position of a defect in a first EUV photolithographic mask, the photolithographic mask including a desired pattern and transferring the desired pattern to a photoresist material disposed on a semiconductor substrate. Transferring the desired pattern further transfers an error pattern feature to the photoresist material as a result of the defect in the first EUV photolithographic mask. The method further includes, using a second photolithographic mask, transferring a trim pattern to the photoresist material, wherein the trim pattern removes the error pattern feature from the photoresist material.
Public/Granted literature
- US20160148848A1 METHODS FOR EXTREME ULTRAVIOLET MASK DEFECT MITIGATION BY MULTI-PATTERNING Public/Granted day:2016-05-26
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