Invention Grant
US08088563B2 Reduction in photoresist footing undercut during development of feature sizes of 120NM or less
失效
在120NM以下的特征尺寸开发期间减少光刻胶底切底切
- Patent Title: Reduction in photoresist footing undercut during development of feature sizes of 120NM or less
- Patent Title (中): 在120NM以下的特征尺寸开发期间减少光刻胶底切底切
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Application No.: US11603698Application Date: 2006-11-21
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Publication No.: US08088563B2Publication Date: 2012-01-03
- Inventor: Sang H. Ahn , Sudha Rathi , Heraldo L. Bothelho
- Applicant: Sang H. Ahn , Sudha Rathi , Heraldo L. Bothelho
- Applicant Address: US CA Santa Clara
- Assignee: Applied Materials, Inc.
- Current Assignee: Applied Materials, Inc.
- Current Assignee Address: US CA Santa Clara
- Agent Shirley L. Church, Esq.
- Main IPC: G03F7/30
- IPC: G03F7/30 ; H05H1/30

Abstract:
We have traced the detachment of photoresist during development of patterned features in the range of about 90 nm and smaller to a combination of the reduced “foot print” of the pattern on the underlying substrate and to the contact angle between the underlying substrate surface and the developing reagent. By maintaining a contact angle of about 30 degrees or greater, the detachment of the photoresist from the underlying substrate can be avoided for photoresists including feature sizes in the range of about 90 nm. We have achieved an increased contact angle between the DARC surface and a water-based CAR photoresist developer while simultaneously reducing CAR poisoning by treating the surface of the DARC after film formation.
Public/Granted literature
- US20070154851A1 Maintenance of photoresist adhesion on the surface of dielectric arcs for 90 NM feature sizes Public/Granted day:2007-07-05
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