US 12,256,165 B2
Pixel circuit, image sensor, camera module, and electronic device
Yi Luo, Guangdong (CN)
Assigned to VIVO MOBILE COMMUNICATION CO., LTD., Guangdong (CN)
Filed by VIVO MOBILE COMMUNICATION CO., LTD., Guangdong (CN)
Filed on May 16, 2023, as Appl. No. 18/318,109.
Application 18/318,109 is a continuation of application No. PCT/CN2021/140515, filed on Dec. 22, 2021.
Claims priority of application No. 202011587897.4 (CN), filed on Dec. 28, 2020.
Prior Publication US 2023/0292023 A1, Sep. 14, 2023
Int. Cl. H04N 25/771 (2023.01); H04N 25/57 (2023.01)
CPC H04N 25/771 (2023.01) [H04N 25/57 (2023.01)] 12 Claims
OG exemplary drawing
 
1. A pixel circuit, comprising:
a photoelectric conversion device, configured to respond to incident light and generate a charge according to a photoelectric effect;
a charge memory, wherein the charge memory is connected to the photoelectric conversion device, and the charge memory is configured to store the charge generated by the photoelectric conversion device;
a first transmission transistor, connected to the photoelectric conversion device and the charge memory, wherein the first transmission transistor is configured to transfer the charge to the charge memory;
a second transmission transistor, connected to the photoelectric conversion device, wherein the second transmission transistor is configured to transfer the charge to a preset node, so as to destroy the charge; and
an exposure control signal memory, connected to the first transmission transistor and the second transmission transistor, wherein the control signal memory is configured to generate a charge control signal according to an exposure control signal, so as to control conduction states of the first transmission transistor and the second transmission transistor.