Patent ID: 8767109

Claim:
A solid-state image pickup device comprising: unit pixels comprising a plurality of pairs of pixels, each pair of pixels including two photoelectric conversion units, two transfer transistors, one for each photoelectric conversion unit, a reset transistor shared by each pair of pixels, and a selection transistor shared by each pair of pixels, the unit pixels being diagonally arranged; and wirings for each of the unit pixels, including a vertical signal line for reading out a signal, a well contact line connected to a well region, two transfer lines each individually connected to one of the transfer transistors, a reset line connected to the reset transistor and a selection line connected to the selection transistor, the vertical signal line and at least one more wiring extends in the vertical direction, the selection line and at least one more wiring extends in the horizontal direction, and at least one portion of at least one of the wirings being arranged so as to pass between two photoelectric conversion units of a single unit pixel, and further wherein the wirings are arranged such that at least one wiring has a plurality separate regions, each separate region extending diagonally along a side of a corresponding pixel and being stepped such that the stepped regions have a plurality lengths extending in alternating directions that are substantially perpendicular.