Semiconductor light receiving element and optical pick-up...

Details Semiconductor light receiving element and optical pick-up... Semiconductor light receiving element and optical pick-up...

2008-05-27

2008-05-27

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

C250S214100, C257S437000, C369S120000

Reexamination Certificate

active

07378627

ABSTRACT:
A semiconductor light receiving element has: a semiconductor substrate; a plurality of photodiodes formed on the semiconductor substrate and configured to receive respective lights of different wavelengths; and an anti-reflection film provided on light receiving surfaces of the plurality of photodiodes. A structure of the anti-reflection film on at least one photodiode of the plurality of photodiodes is different from a structure of the anti-reflection film on another photodiode of the plurality of photodiodes.

REFERENCES:
patent: 2007/0023770 (2007-02-01), Miyajima et al.
patent: 2001-307361 (2001-11-01), None
patent: 2001-307362 (2001-11-01), None
patent: 2002-118281 (2002-04-01), None
patent: 2005136269 (2005-05-01), None

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