Patent ID: 6043523
Filing Date: 2000-03-28
Classification: H01L

Abstract:
A charge coupled device (CCD) comprising:a well formed in a substrate, the well having a conductivity opposite to that of the substrate;a first conductivity type of BCCD region formed on the well;a first lightly doped impurity region formed in a portion of the first conductivity type of the BCCD region;a heavily doped impurity region formed in a portion of the BCCD region, the heavily doped impurity region having a distance from the first lightly doped impurity region;a second lightly doped impurity region formed between the first lightly doped impurity region and the heavily doped impurity region;a first polysilicon gate formed over a portion of the BCCD region, and placed between the first lightly doped impurity region and the heavily doped impurity region; anda second polysilicon gate formed over the first lightly doped impurity region.