Photoelectric detection circuit, photoelectric detection device and electronic device
US11371881B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 31, 2019 |
| Grant date | Jun 28, 2022 |
| Priority date | — |
| Expiry date | Jan 26, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/144
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A photoelectric detection circuit, a photoelectric detection device and an electronic device. The photoelectric detection circuit includes a first detection sub-circuit configured to be exposed to the environment of light to be detected and having an equivalent resistance that varies with the variation of illumination intensity of the light to be detected in the environment; and a second detection sub-circuit configured to be in a state of fixed illumination intensity and having an equivalent resistance that is constant due to the fixed illumination intensity. The first detection sub-circuit is connected in series with the second detection sub-circuit via a first node N1 and the signal output lead Vout is electrically connected with the first node N1 to output detected electrical signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.