US 11,791,424 B2
Device including photoconductor readout circuit for measuring differential voltages of a photoconductor
Celal Mohan Oeguen, Ludwigshafen (DE); Bernd Scherwath, Ludwigshafen (DE); Peter Fejes, Ludwigshafen (DE); and Felix Berno Mueller, Ludwigshafen (DE)
Assigned to trinamiX GmbH
Appl. No. 17/759,338
Filed by trinamix GmbH, Ludwigshafen am Rhein (DE)
PCT Filed Jan. 29, 2021, PCT No. PCT/EP2021/052081
§ 371(c)(1), (2) Date Jul. 22, 2022,
PCT Pub. No. WO2021/152074, PCT Pub. Date Aug. 5, 2021.
Claims priority of application No. 20154495 (EP), filed on Jan. 30, 2020.
Prior Publication US 2023/0039433 A1, Feb. 9, 2023
Int. Cl. H01L 31/02 (2006.01); H01L 31/09 (2006.01); G01J 1/44 (2006.01)
CPC H01L 31/02016 (2013.01) [G01J 1/44 (2013.01); H01L 31/09 (2013.01); G01J 2001/4446 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A device comprising:
at least one photoconductor configured for exhibiting an electrical resistance Rphoto dependent on an illumination of a light-sensitive region of the photoconductor;
at least one photoconductor readout circuit, wherein the photoconductor readout circuit is configured for determining a differential voltage related to changes of the electrical resistance Rphoto of the photoconductor, wherein the photoconductor readout circuit comprises at least one bias voltage source configured for applying at least one periodically modulated bias voltage to the photoconductor such that an electric output changes its polarity at least once; and
at least one electrical element configured to balance the differential voltage at a given illumination level.