Abstract
An image sensor including a pixel array is provided. The pixel array includes R×S sub-pixel arrays. The sub-pixel array includes P×Q pixels. Each pixel includes a photodiode, a first transistor, a second transistor, a third transistor, a fourth transistor, and a fifth transistor. The gate of the second transistor is coupled to a row control signal. The second source/drain electrode of the second transistor is coupled to a column control signal. The gate electrode of the third transistor is coupled to a reset signal. The second source/drain electrode of the third transistor is coupled to a column voltage reset signal. The gate electrode of the fifth transistor is coupled to a row select signal. The sub-pixel array uses the row control signal, the column control signal, the column voltage reset signal, and the row select signal to select an output the sensing signal of one of the pixels.