Patent ID: 8004028
Filing Date: 2011-08-23
Classification: H01L

Abstract:
1. A solid state imaging device comprising: a plurality of photoelectric conversion devices arranged two-dimensionally; a color filter including a plurality of picture elements, each picture element being disposed to correspond to each of the photoelectric conversion devices; and a plurality of transfer lenses each disposed corresponding to each of the picture elements, formed of a fluorine-based acrylic resin, and formed directly on each of the picture elements, wherein a gap between sides of neighboring transfer lenses among said plurality of transfer lenses is not more than 0.035 μm, and a length of contact of the sides is within a range of 3-80% of a pitch of said plurality of transfer lenses, and the transfer lenses are formed by a method including forming the color filter; forming a transparent resin layer of the fluorine-based acrylic resin on the color filter; forming an etching control layer on the transparent resin layer, the etching control layer being enabled to be etched at a different etching rate from the etching rate of the transparent resin layer; forming a lens master on the etching control layer by using a heat-flowable resin material; transferring a pattern of the lens master to the etching control layer by dry etching to form an intermediate micro lens; and transferring a pattern of the intermediate micro lens to the transparent resin layer by dry etching to form the transfer lenses.