Invention Grant
- Patent Title: Methods and structures to repair device warpage
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Application No.: US14819744Application Date: 2015-08-06
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Publication No.: US09859234B2Publication Date: 2018-01-02
- Inventor: Cyprian Emeka Uzoh , Guilian Gao , Bongsub Lee , Scott McGrath , Hong Shen , Charles G. Woychik , Arkalgud R. Sitaram , Akash Agrawal
- Applicant: Invensas Corporation
- Applicant Address: US CA San Jose
- Assignee: Invensas Corporation
- Current Assignee: Invensas Corporation
- Current Assignee Address: US CA San Jose
- Agency: Lerner, David, Littenberg, Krumholz & Mentlik, LLP
- Main IPC: H01L21/00
- IPC: H01L21/00 ; H01L23/00 ; H01L21/311 ; H01L23/48 ; H01L23/498 ; H01L21/48 ; H01L23/532

Abstract:
A method of processing an interconnection element can include providing a substrate element having front and rear opposite surfaces and electrically conductive structure, a first dielectric layer overlying the front surface and a plurality of conductive contacts at a first surface of the first dielectric layer, and a second dielectric layer overlying the rear surface and having a conductive element at a second surface of the second dielectric layer. The method can also include removing a portion of the second dielectric layer so as to reduce the thickness of the portion, and to provide a raised portion of the second dielectric layer having a first thickness and a lowered portion having a second thickness. The first thickness can be greater than the second thickness. At least a portion of the conductive element can be recessed below a height of the first thickness of the second dielectric layer.
Public/Granted literature
- US20170040270A1 METHODS AND STRUCTURES TO REPAIR DEVICE WARPAGE Public/Granted day:2017-02-09
Information query
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