Invention Grant
- Patent Title: Hermetically sealed MEMS mirror and method of manufacture
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Application No.: US18206363Application Date: 2023-06-06
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Publication No.: US12078799B2Publication Date: 2024-09-03
- Inventor: Giorgio Allegato , Sonia Costantini , Federico Vercesi , Roberto Carminati
- Applicant: STMicroelectronics S.r.l.
- Applicant Address: IT Agrate Brianza
- Assignee: STMicroelectron S.r.l.
- Current Assignee: STMicroelectron S.r.l.
- Current Assignee Address: IT Agrate Brianza
- Agency: Crowe & Dunlevy LLC
- The original application number of the division: US16591854 2019.10.03
- Main IPC: G02B26/10
- IPC: G02B26/10 ; B81C1/00 ; G02B26/08

Abstract:
A method of making a MEMS device including forming a mirror stack on a handle layer, applying a first bonding layer to the mirror stack, and disposing a substrate on the first bonding layer. The handle layer is removed and a second bonding layer is applied. A cap layer is disposed on the second bonding layer. The mirror stack is formed by disposing a silicon layer on the handle layer, disposing a first insulating layer on the silicon layer, etching portions of the first insulating layer, and depositing a first conductive layer on the first insulating layer. The formation also includes depositing a second insulating layer on the first conductive layer, a portion of the second insulating layer to expose a portion of the first conductive layer exposed, and forming a conductive pad on the exposed portion of the first conductive layer.
Public/Granted literature
- US20230324678A1 HERMETICALLY SEALED MEMS MIRROR AND METHOD OF MANUFACTURE Public/Granted day:2023-10-12
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