Invention Grant
- Patent Title: Structures and methods for reducing stress in three-dimensional memory device
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Application No.: US16410758Application Date: 2019-05-13
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Publication No.: US10825929B2Publication Date: 2020-11-03
- Inventor: Jian Hua Sun , Sizhe Li , Ji Xia , Qinxiang Wei
- Applicant: Yangtze Memory Technologies Co., Ltd.
- Applicant Address: CN Wuhan
- Assignee: Yangtze Memory Technologies Co., Ltd.
- Current Assignee: Yangtze Memory Technologies Co., Ltd.
- Current Assignee Address: CN Wuhan
- Agency: Sterne, Kessler, Goldstein & Fox P.L.L.C.
- Main IPC: H01L29/66
- IPC: H01L29/66 ; H01L29/78 ; H01L23/00 ; G11C16/04 ; H01L27/11556 ; H01L27/11582

Abstract:
Embodiments of counter-stress structures and methods for forming the same are disclosed. The present disclosure describes a semiconductor wafer including a substrate having a dielectric layer formed thereon and a device region in the dielectric layer. The device region includes at least one semiconductor device. The semiconductor wafer further includes a sacrificial region adjacent to the device region, wherein the sacrificial region includes at least one counter-stress structure configured to counteract wafer stress formed in the device region.
Public/Granted literature
- US20200227555A1 STRUCTURES AND METHODS FOR REDUCING STRESS IN THREE-DIMENSIONAL MEMORY DEVICE Public/Granted day:2020-07-16
Information query
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