US 12,140,484 B2
Apparatus for producing an electrical signal that is indicative of a temperature
Radu Alexandru Sporea, Guildford (GB); and Eva Bestelink, Guildford (GB)
Assigned to University of Surrey, Guildford (GB)
Appl. No. 17/639,239
Filed by University of Surrey, Guildford (GB)
PCT Filed Aug. 27, 2020, PCT No. PCT/GB2020/052056
§ 371(c)(1), (2) Date Feb. 28, 2022,
PCT Pub. No. WO2021/038230, PCT Pub. Date Mar. 4, 2021.
Claims priority of application No. 1912526 (GB), filed on Aug. 30, 2019.
Prior Publication US 2022/0326091 A1, Oct. 13, 2022
Int. Cl. G05F 3/24 (2006.01); G01K 7/01 (2006.01); G05F 3/26 (2006.01)
CPC G01K 7/01 (2013.01) [G05F 3/245 (2013.01); G05F 3/26 (2013.01)] 20 Claims
OG exemplary drawing
 
1. Apparatus comprising:
a first thin-film transistor TFT comprising a first source, a first gate and a first drain, the first drain being configured to receive a reference current; and
a second TFT comprising a second source, a second gate and a second drain, the first and second gates both being configured to receive the same gate voltage,
wherein the first and second TFTs are configured such that a temperature dependence of the first TFT differs from a temperature dependence of the second TFT, such that an output current at the second TFT and the second drain is dependent on temperature.