Invention Grant
- Patent Title: Methods for reducing transfer pattern defects in a semiconductor device
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Application No.: US16944051Application Date: 2020-07-30
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Publication No.: US11217448B2Publication Date: 2022-01-04
- Inventor: Regina Freed , Steven R. Sherman , Nadine Alexis , Lin Zhou
- 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: Kacvinsky Daisak Bluni PLLC
- Main IPC: H01L21/033
- IPC: H01L21/033 ; H01L21/311

Abstract:
Disclosed are methods for reducing transfer pattern defects in a semiconductor device. In some embodiments, a method includes providing a semiconductor device including a plurality of photoresist lines on a stack of layers, wherein the plurality of photoresist lines includes a bridge defect extending between two or more photoresist lines of the plurality of photoresist lines. The method may further include forming a plurality of mask lines by etching a set of trenches in a first layer of the stack of layers, and removing the bridge defect by etching the bridge defect at a non-zero angle of inclination with respect to a perpendicular to a plane of an upper surface of the stack of layers.
Information query
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