Invention Grant
- Patent Title: Methods for forming a stress-relieved film stack by applying cutting patterns
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Application No.: US13801202Application Date: 2013-03-13
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Publication No.: US09728469B2Publication Date: 2017-08-08
- Inventor: Wen-Yun Wang , Ching-Yu Chang
- Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
- Applicant Address: TW Hsin-Chu
- Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
- Current Assignee Address: TW Hsin-Chu
- Agency: Slater Matsil, LLP
- Main IPC: H01L21/78
- IPC: H01L21/78 ; H01L21/461 ; H01L21/66 ; H01L23/00 ; H01L23/31

Abstract:
Disclosed herein is a method of forming a stress relieved film stack, the method comprising forming a film stack on a first side of a substrate, the film stack comprising a plurality of film layers and creating a plurality of film stack openings according to a cutting pattern and along at least a portion of a buffer region. The plurality of film stack openings extend from a top surface of the film stack to the substrate. A deflection of the substrate may be determined, and the cutting pattern selected prior to creating the film stack openings based on the deflection of the substrate. The substrate may have a deflection of less than about 2 μm after creating the plurality of film stack openings. And at least one of the plurality of film layers may comprise one of titanium nitride, silicon carbide and silicon dioxide.
Public/Granted literature
- US20140264766A1 System and Method for Film Stress Release Public/Granted day:2014-09-18
Information query
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