Invention Grant
- Patent Title: Selective photoresist etching for bridge defect removal
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Application No.: US16140916Application Date: 2018-09-25
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Publication No.: US10937663B2Publication Date: 2021-03-02
- Inventor: Tristan Y. Ma , Juiyuan Hsu
- Applicant: Varian Semiconductor Equipment Associates, Inc.
- Applicant Address: US MA Gloucester
- Assignee: Varian Semiconductor Equipment Associates, Inc.
- Current Assignee: Varian Semiconductor Equipment Associates, Inc.
- Current Assignee Address: US MA Gloucester
- Agency: Kacvinsky Daisak Bluni PLLC
- Main IPC: H01L21/311
- IPC: H01L21/311 ; H01L21/027 ; H01L21/308 ; H01L21/3213 ; G03F7/09

Abstract:
Disclosed are methods for removing bridge defects using an angled implant and selective photoresist etch. In one embodiment, a method includes providing a semiconductor device including plurality of photoresist lines on a stack of layers, wherein a bridge defect extends between two or more photoresist lines of the plurality of photoresist lines. The method may further include implanting a sidewall and an upper surface of the two or more photoresist lines with an ion beam disposed at an angle, the angle being a non-zero angle of inclination with respect to a perpendicular to a plane of the upper surface of the stack of layers. The method may further include etching the semiconductor device to remove the bridge defect.
Public/Granted literature
- US20200098589A1 SELECTIVE PHOTORESIST ETCHING FOR BRIDGE DEFECT REMOVAL Public/Granted day:2020-03-26
Information query
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