Patent ID: 11898943
Assignee: STMICROELECTRONICS S.R.L.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 13:
14. A stress sensor, comprising:
a ceramic substrate having a recess in a first surface of the ceramic substrate, the recess having a first portion and a second portion, the first portion having a second surface, the second portion having a bottom wall, the first portion is provided in the bottom wall of the second portion; and
a stack of a sensor chip of a semiconductor material and a hard die-attach layer in the recess, the hard die-attach layer bonded to the second surface of the recess that is between the ceramic substrate and the hard die-attach layer, the sensor chip attached to the ceramic substrate through the hard die-attach layer, wherein:
the ceramic substrate has a thickness smaller by at least one order of magnitude than a main dimension of the surface; and
the sensor chip has a thickness smaller by at least one order of magnitude than the thickness of the ceramic substrate.