US Patent Application 18350461. PIXEL AND IMAGE SENSOR INCLUDING THE SAME simplified abstract
Contents
PIXEL AND IMAGE SENSOR INCLUDING THE SAME
Organization Name
Inventor(s)
Seokyong Park of Hwaseong-si (KR)
Kyungmin Kim of Hwaseong-si (KR)
PIXEL AND IMAGE SENSOR INCLUDING THE SAME - A simplified explanation of the abstract
This abstract first appeared for US patent application 18350461 titled 'PIXEL AND IMAGE SENSOR INCLUDING THE SAME
Simplified Explanation
The patent application describes a unit pixel circuit that includes two photodiodes, floating diffusion nodes, capacitors, and various transistors.
- The circuit is designed to accumulate charges generated in the photodiodes and prevent overflow.
- A capacitor is used to store overflowed charges from one of the photodiodes.
- Switch transistors are used to connect different nodes and control the flow of charges.
- A gain control transistor is used to connect the two floating diffusion nodes and adjust the gain of the circuit.
Original Abstract Submitted
A unit pixel circuit includes a first photodiode, a second photodiode different from the first photodiode, a first floating diffusion node in which charges generated in the first photodiode are accumulated, a second floating diffusion node in which charges generated in the second photodiode are accumulated, a capacitor connected to the first floating diffusion node and a first voltage node, and accumulating overflowed charges of the first photodiode, a first switch transistor connecting the first floating diffusion node to a third floating diffusion node, a reset transistor connecting the third floating diffusion node to a second voltage node, a gain control transistor connecting the second floating diffusion node to the third floating diffusion node, and a second switch transistor connected to the first voltage node and the second voltage node.
