Patent ID: 9040343
Filing Date: 2015-05-26
Classification: H01L

Abstract:
1. A method of manufacturing a solid-state imaging device, comprising: forming a gate insulating film lined hole with a desired depth extending from a front surface side of a substrate toward a rear surface side of the substrate; forming a vertical gate electrode that causes a reading-out portion formed at a surface side of the substrate to read out the signal charges accumulated in a photoelectric conversion unit by embedding an electrode material into the gate insulating film lined hole; forming a wire layer where a plurality of layers of wires are stacked, on the front surface side of the substrate in an interlayer insulating film; turning over the substrate after bonding a support substrate onto the wire layer; removing the gate insulating film formed in the through-hole to a predetermined depth and reducing the thickness of the substrate until the hole extends to the rear surface side of the substrate; and forming a charge fixing film having negative fixed charges covering the entire rear surface of the substrate and filling the through-hole where the gate insulating film was removed with the charge fixing claim.