Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2005-12-30
2008-03-04
Lee, John R. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C257S435000, C438S072000, C250S208100
Reexamination Certificate
active
07339155
ABSTRACT:
A CMOS image sensor and a method for fabricating the same are disclosed, in which light-shielding layers are formed in trenches to improve photosensitivity of the image sensor and simplify its process steps. The CMOS image sensor includes a plurality of photodiodes formed in a semiconductor substrate at constant intervals, an interlayer dielectric layer formed on the semiconductor substrate including the photodiodes, a plurality of metal lines formed in the interlayer dielectric layer, a plurality of light-shielding layers formed in the interlayer dielectric layer to correspond to the metal lines, and microlenses formed over the interlayer dielectric layer to correspond to portions between the respective light-shielding layers.
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Dongbu Electronics Co., Ltd
Lee John R.
McKenna Long & Aldridge LLP
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