Invention Grant
- Patent Title: Substrate loss reduction for semiconductor devices
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Application No.: US18302197Application Date: 2023-04-18
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Publication No.: US12148706B2Publication Date: 2024-11-19
- Inventor: Xin-Hua Huang , Chung-Yi Yu , Kuei-Ming Chen
- 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: Eschweiler & Potashnik, LLC
- Main IPC: H01L21/76
- IPC: H01L21/76 ; H01L21/768 ; H01L23/00 ; H01L23/48 ; H01L23/538 ; H01L29/778

Abstract:
Various embodiments of the present disclosure are directed towards an integrated circuit (IC) chip comprising a semiconductor device that is inverted and that overlies a dielectric region inset into a top of a semiconductor substrate. An interconnect structure overlies the semiconductor substrate and the dielectric region and further comprises an intermetal dielectric (IMD) layer. The IMD layer is bonded to the top of the semiconductor substrate and accommodates a pad. A semiconductor layer overlies the interconnect structure, and the semiconductor device is in the semiconductor layer, between the semiconductor layer and the interconnect structure. The semiconductor device comprises a first source/drain electrode overlying the dielectric region and further overlying and electrically coupled to the pad. The dielectric region reduces substrate capacitance to decrease substrate power loss and may, for example, be a cavity or a dielectric layer. A contact extends through the semiconductor layer to the pad.
Public/Granted literature
- US20230253334A1 SUBSTRATE LOSS REDUCTION FOR SEMICONDUCTOR DEVICES Public/Granted day:2023-08-10
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