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

Claim 17:
18. A sensor, comprising:
a substrate;
a recess in the substrate, the recess having a surface;
a hard die-attach layer bonded to the surface of the recess; and
a sensor chip of semiconductor material in the recess and bonded to the substrate via the hard die-attach layer, the surface of the recess between the sensor chip and the substrate, the sensor chip having a thickness smaller by at least one order of magnitude than a thickness of the substrate, and the substrate and sensor chip having respective Young's moduli of a same order of magnitude, the recess includes a first portion and a second portion, the first portion being deeper and narrower than the second portion, the first portion being between the substrate and the second portion.