Patent ID: 11967604
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. An image sensor comprising:
a sensor pixel including:
a first transistor coupled between a first power source and a first node, wherein the first transistor is turned on in response to a first control signal;
a light-sensing element coupled between the first node and a second power source, wherein the light-sensing element generates photocharges in response to incident light;
a storage capacitor coupled in parallel to the light-sensing element between the first node and the second power source; and
an amplifier coupled between the first power source and an output line, wherein the amplifier outputs a sensing signal corresponding to a voltage of the first node in response to a first driving signal,
wherein the amplifier comprises:
a second transistor coupled between the first power source and the output line, wherein the second transistor includes a gate electrode coupled to the first node and generates the sensing signal;
a third transistor coupled between the second transistor and the output line, wherein the third transistor amplifies and outputs the sensing signal during an interval in which the first driving signal is supplied; and
a fourth transistor coupled between the third transistor and the output line, and
wherein the fourth transistor amplifies and outputs a sensing signal supplied from the third transistor during the interval in which the first driving signal is supplied.