Patent ID: 11860029
Assignee: BEIJING BOE SENSOR TECHNOLOGY CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. A light intensity detection method, comprising:
providing, by a reset sub-circuit, a reference voltage provided by an offset voltage terminal to a first node;
sensing, by a sense sub-circuit, a voltage of a second node;
providing, by the reset sub-circuit, an offset voltage provided by the offset voltage terminal to the first node, wherein the offset voltage is equal to a difference between a reset voltage and the voltage of the second node sensed by the sense sub-circuit;
generating, by the photoelectric conversion sub-circuit, a corresponding electrical signal according to an incident light signal and outputting the corresponding electrical signal to the first node;
generating, by a source follower sub-circuit, a corresponding voltage signal or current signal according to the electrical signal of the first node and outputting corresponding voltage signal or current signal to the second node; and
reading, by a read sub-circuit, the voltage signal or current signal of the second node to determine an incident light intensity.