Pixel array for optimizing dual conversion gain operation of pixels sharing floating diffusion region and image sensor including the same

Abstract

A pixel array includes: unit pixel groups; and two column lines provided for each column. Each of the unit pixel groups includes rows, a first pixel group comprising a plurality of pixels, a second pixel group comprising a plurality of pixels. The first pixel group and the second pixel group are arranged in a row direction. A pixel signal is output by simultaneously reading out: unit pixel groups that are connected to a first column line and that do not share a first floating diffusion region, and unit pixel groups that are connected to a second column line different from the first column line and that do not share a second floating diffusion region. At least one of the first floating diffusion region and the second floating diffusion region is between a dual conversion transistor and a reset transistor.