Patent ID: 8035183
Filing Date: 2011-10-11
Classification: H01L

Abstract:
1. A dual junction photodiode semiconductor device comprising: a. a semiconductor substrate of a first conductivity type; b. a first impurity region of a second conductivity type shallowly diffused on a first side of said semiconductor substrate, wherein said first impurity region has a thickness and resistivity adapted to filter wavelengths in a range of 200 nm to 800 nm; c. a second impurity region of the second conductivity type shallowly diffused on a second side of said semiconductor substrate, said second side being opposite to said first side, wherein said second impurity region has a thickness and resistivity adapted to filter wavelengths in a range of 800 nm to 1100 nm; d. a first PN junction formed between said semiconductor substrate and first impurity region; and e. a second PN junction formed between said semiconductor substrate and said second impurity region.