| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-performance semiconductor optical sensor device which is less affected by stray light. SOLUTION: The semiconductor optical sensor device comprises a semiconductor substrate, semiconductor layer which is formed on the semiconductor substrate and is divided by an insulation film, first photo diode formed near a surface of the semiconductor layer, second photodiode formed below the first photo diode, and signal processing circuit formed in the semiconductor layer to process output signals of the first and second photodiodes. COPYRIGHT: (C)2004,JPO
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