Patent ID: 7705380
Filing Date: 2010-04-27
Classification: H01L

Abstract:
1. An amplification-type solid state image sensing device which uses a semiconductor substrate formed by epitaxially depositing an n-type semiconductor layer on a p-type semiconductor substrate and has photoelectric conversion units formed in the n-type semiconductor layer, comprising: first p-type semiconductor layers which are formed under the photoelectric conversion units of green and blue pixel portions; second p-type semiconductor layers which are formed to surround the photoelectric conversion units of the green and blue pixel portions together with the first p-type semiconductor layers and have a depth up to the first p-type semiconductor layers; and a third p-type semiconductor layer which is formed to surround a red pixel portion and has a depth up to the p-type semiconductor substrate, wherein portions of the n-type semiconductor layer existing under the first p-type semiconductor layers formed under the photoelectric conversion units of the green and blue pixel portions are electrically connected to each other and are electrically connected to an n-type semiconductor layer formed around an image sensing region.