Invention Application
- Patent Title: INCREASED CONTACT ALIGNMENT TOLERANCE FOR DIRECT BONDING
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Application No.: US16388692Application Date: 2019-04-18
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Publication No.: US20190244899A1Publication Date: 2019-08-08
- Inventor: Paul M. Enquist , Gaius Gillman Fountain, JR. , Javier A. DeLaCruz
- Applicant: Invensas Bonding Technologies, Inc.
- Main IPC: H01L23/528
- IPC: H01L23/528 ; H01L23/522 ; H01L25/065 ; H01L23/00 ; H01L25/00 ; H01L21/768

Abstract:
A bonded device structure including a first substrate having a first set of conductive contact structures, preferably connected to a device or circuit, and having a first non-metallic region adjacent to the contact structures on the first substrate, a second substrate having a second set of conductive contact structures, preferably connected to a device or circuit, and having a second non-metallic region adjacent to the contact structures on the second substrate, and a contact-bonded interface between the first and second set of contact structures formed by contact bonding of the first non-metallic region to the second non-metallic region. The contact structures include elongated contact features, such as individual lines or lines connected in a grid, that are non-parallel on the two substrates, making contact at intersections. Alignment tolerances are thus improved while minimizing dishing and parasitic capacitance.
Public/Granted literature
- US10607937B2 Increased contact alignment tolerance for direct bonding Public/Granted day:2020-03-31
Information query
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