Sony has succeeded in establishing a structure that layers the pixel section containing formations of back-illuminated structure pixels over the chip affixed with mounted circuits for signal processing, which is in place of supporting substrates used for conventional back-illuminated CMOS image sensors.

ENGADGET: Sony's new cameraphone CMOS jams bigger gear into the same space (video)

In addition, faster signal processing and lower power consumption can also be achieved through the use of leading process for the chip containing the circuits.

ENGADGET: Sony's new cameraphone CMOS jams bigger gear into the same space (video)