Patent ID: 8222586

Claim:
A 3T-4S step & repeat unit cell comprising: a first photodiode ( 0 , 0 ); a second photodiode ( 1 , 1 ) disposed in a diagonal direction of the first photodiode; a third photodiode ( 1 , 2 ) disposed at a side of the second photodiode; and a fourth photodiode ( 2 , 1 ) disposed over the second photodiode, wherein a first shared image sensor unit cell is constructed by combining the first and second photodiodes with four transistors, and a second shared image sensor unit cell is constructed by combining the third and fourth photodiodes with four transistors, and wherein signals corresponding to images incident onto the first and second photodiodes are output through a first common detection line OUT 1 , signals corresponding to images incident onto the third and fourth photodiodes are output through a second common detection line OUT 2 , and a terminal of each of the four photodiodes is connected to a first voltage source.