Patent ID: 9435696
Filing Date: 2016-09-06
CPC Classification: G01K

Claim Text:
1. A temperature sensor circuit comprising: a first constant current circuit; a first semiconductor element where a first voltage is generated between a pair of terminals in accordance with a first current supplied from the first constant current circuit; a second constant current circuit; a second semiconductor element where a second voltage is generated between a pair of terminals in accordance with a second current supplied from the second constant current circuit; and an amplifier circuit which amplifies a difference between the first voltage and the second voltage, wherein a rate of change in the first voltage with a first temperature of the first semiconductor element is greater than a rate of change in the second voltage with a second temperature of the second semiconductor element, wherein a value of the first temperature is the same as a value of the second temperature, wherein the second semiconductor element comprises an oxide semiconductor, and wherein the first semiconductor element comprises a semiconductor other than the oxide semiconductor.