Invention Application
- Patent Title: Single crystal, tunneling and capacitive, three-axes sensor using eutectic bonding and a method of making same
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Application No.: US10639289Application Date: 2003-08-11
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Publication No.: US20040048403A1Publication Date: 2004-03-11
- Inventor: Randall L. Kubena , David T. Chang
- Applicant: HRL Laboratories, LLC
- Applicant Address: null
- Assignee: HRL Laboratories, LLC
- Current Assignee: HRL Laboratories, LLC
- Current Assignee Address: null
- Main IPC: H01L021/00
- IPC: H01L021/00

Abstract:
A three axis MEM tunneling/capacitive sensor and method of making same. Cantilevered beam structures for at least two orthogonally arranged sensors and associated mating structures are defined on a first substrate or wafer, the at least two orthogonally arranged sensors having orthogonal directions of sensor sensitivity. A resonator structure of at least a third sensor is also defined, the third sensor being sensitive in a third direction orthogonal to the orthogonal directions of sensor sensitivity of the two orthogonally arranged sensors and the resonator structure having a mating structure thereon. Contact structures for at least two orthogonally arranged sensors are formed together with mating structures on a second substrate or wafer, the mating structures on the second substrate or wafer being of a complementary shape to the mating structures on the first substrate or wafer. The mating structures of the first substrate are disposed in a confronting relationship with the mating structures of the second substrate or wafer. A eutectic bonding layer associated with one of the mating structures facilitates bonding between the respective mating structures. At least a portion of the first substrate or wafer is removed to release the cantilevered beam structures and the resonator structure.
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