Patent ID: 7667178
Filing Date: 2010-02-23
Classification: H01L

Abstract:
1. An image sensor, comprising: a photoelectric conversion section in a semiconductor substrate, the photoelectric conversion section having a capping layer of a first conductivity type and a photodiode of a second conductivity type below the capping layer, the photodiode being positioned to have an upper surface thereof deeper than about 1 μm as measured from an upper surface of the semiconductor substrate; a charge transfer section adapted to receive charges stored in the photoelectric conversion section, the charges corresponding to light incident on the photoelectric conversion section; a charge detection section adapted to receive the charges from the charge transfer section and to convert the received charges into respective electrical signals; a voltage application section adapted to apply voltage to the capping layer and to a lower portion of the semiconductor substrate to control a width of a depletion layer on the photodiode; and a signal operation section adapted to receive the electrical signals from the charge detection section to generate red, green, and blue signals.