Invention Grant
- Patent Title: Chip bonding alignment structure, chip bonding structure and methods for fabricating the same
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Application No.: US17180909Application Date: 2021-02-22
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Publication No.: US11462513B2Publication Date: 2022-10-04
- Inventor: Chin-Chia Yang , Fu-Yu Tsai , Da-Jun Lin , Bin-Siang Tsai
- Applicant: UNITED MICROELECTRONICS CORP.
- Applicant Address: TW Hsinchu
- Assignee: UNITED MICROELECTRONICS CORP.
- Current Assignee: UNITED MICROELECTRONICS CORP.
- Current Assignee Address: TW Hsinchu
- Agency: WPAT, PC
- Priority: CN202011589292.9 20201229
- Main IPC: H01L25/065
- IPC: H01L25/065 ; H01L23/00 ; H01L23/544 ; H01L21/768 ; H01L25/00

Abstract:
A chip bonding alignment structure includes a semiconductor chip, a metal layer, an etching stop layer, at least one metal bump, a dielectric barrier layer, a silicon oxide layer, and a silicon carbonitride layer. The metal layer is disposed on a bonding surface of the semiconductor chip and has a metal alignment pattern. The etching stop layer covers the bonding surface and the metal layer. The metal bump extends upward from the metal layer and penetrates through the etching stop layer. The dielectric barrier layer covers the etching stop layer and the metal bump. The silicon oxide layer covers the dielectric barrier layer. The silicon carbonitride layer covers the silicon oxide layer.
Public/Granted literature
- US20220208727A1 CHIP BONDING ALIGNMENT STRUCTURE, CHIP BONDING STRUCTURE AND METHODS FOR FABRICATING THE SAME Public/Granted day:2022-06-30
Information query
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