a first shared pixel including first-four photodiodes that share a first floating diffusion (FD) area, the first FD area being surrounded by the first-four photodiodes;

a second shared pixel including second-four photodiodes that share a second floating diffusion (FD) area, the second FD area being surrounded by the second-four photodiodes;

a third FD area connected by the first FD area and the second FD area through a first interconnection;

a first reset transistor (TR) connected to the third FD area;

a second reset TR connected to the first reset TR;

a first source follower TR connected to the third FD area; and

a first selection TR connected to the first source follower TR,

wherein the second reset TR and the first reset TR are adjacent to each other,

wherein the first selection TR is connected to a second interconnection via an output vertical contact,

wherein the first shared pixel and the second shared pixel are arranged in a first direction, and

wherein the first reset TR, the second reset TR, the third FD area, the first source follower TR and the first selection TR are arranged in the first direction in the order of the second reset TR, the third FD area, the first reset TR, the first source follower TR and the first selection TR.