Patent ID: 9607906
Date: 2017-03-28
CPC Classifications: G01K,G01R,H01L

Claim:
1. An integrated circuit chip, comprising: an integrated circuit semiconductor layer including a plurality of trenches at least partially surrounding a perimeter of a critical portion of the integrated circuit semiconductor layer; wherein said trenches are locally disconnected from each other; one or more electrical connections passing along a portion of the integrated circuit semiconductor layer where the trenches are locally disconnected from each other, said electrical connections extending between said critical portion and an outer portion of the integrated circuit semiconductor layer; one or more heating resistors placed in said critical portion and configured to vary temperature of said critical portion; a circuit including a first circuit part located in the outer portion of the integrated circuit semiconductor layer and a second circuit part located in the critical portion of the integrated circuit semiconductor layer, said second circuit part comprising circuitry sensitive to temperature variation; and a temperature sensor placed in said critical portion.