Patent ID: 9000493
Filing Date: 2015-04-07
Classification: H01L

Abstract:
1. A solid-state imaging device comprising: an imaging region and a peripheral circuit region, the peripheral circuit region including at least one of a vertical selection circuit, a sample-and-hold correlated double sampling circuit, a horizontal selection circuit, a timing generator, an automatic gain control circuit, an A/D converter circuit and a digital amplifier; a substrate having first and second sides, the second side having a light-receiving surface, the first side having an oppositely facing surface; a photodetector in the substrate at the imaging region; a silicon oxide film on the light-receiving surface and extending over the imaging region and the peripheral circuit region; a first insulating film having an at least partially crystallized region on the silicon oxide film and extending over the imaging region and the peripheral circuit region, the first insulating film being composed of an oxide containing an element selected from the group consisting of hafnium, aluminum, tantalum, titanium, yttrium, and lanthanoids; a light-shielding film extending over the peripheral circuit region and a portion of the imaging region; a plurality of on-chip micro lenses over the first insulating film at the second side and disposed at least over the imaging region; a wiring layer over the oppositely facing surface, the wiring layer including a transfer gate of a transfer transistor; and a charge accumulation region in the substrate at the light-receiving surface, the charge accumulation region effective to suppress dark current, the charge accumulation region being devoid of implanted ions.