Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2007-09-04
2007-09-04
Lee, John R. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C257S294000, C257S435000, C438S065000
Reexamination Certificate
active
11207804
ABSTRACT:
A device and method to provide an optical guide of a pixel to guide incoming light onto a photosensor of the pixel and to improve the optical crosstalk immunity of an image sensor. The optical guide consists of an optically reflecting barrier formed as a trench that mitigates against optical crosstalk. The optical guide is made of an air-filled ring of spaced slots. In another embodiment, the optical guide structure can be filled with a low dielectric material with an index of refraction that is less than the index of refraction of the material used for the surrounding layers.
REFERENCES:
patent: 6140630 (2000-10-01), Rhodes
patent: 6177333 (2001-01-01), Rhodes
patent: 6204524 (2001-03-01), Rhodes
patent: 6310366 (2001-10-01), Rhodes et al.
patent: 6326652 (2001-12-01), Rhodes
patent: 6333205 (2001-12-01), Rhodes
patent: 6376868 (2002-04-01), Rhodes
patent: 6995442 (2006-02-01), Jiang et al.
patent: 7001795 (2006-02-01), Jiang et al.
patent: 7078779 (2006-07-01), Wang et al.
patent: 2005/0045928 (2005-03-01), Kuriyama
patent: 2005/0056901 (2005-03-01), Kuriyama
patent: 2005/0236553 (2005-10-01), Noto et al.
patent: 2005/0263676 (2005-12-01), Jeon
patent: 2007/0040102 (2007-02-01), Mouli
patent: 2007/0045511 (2007-03-01), Lee et al.
patent: 2007/0045513 (2007-03-01), Lee et al.
Mendis, et al., “CMOS Active Pixel Image Sensor”, IEEE Transactions on Electron Devices, vol. 41, No. 3, Mar. 1994, pp. 452-453.
Nixon et al., “256×256 CMOS Active Pixel Sensor Camera-on-a-Chip”, IEEE Journal of Solid-State Circuits, vol. 31, No. 12, Dec. 1996, pp. 2046-2050.
T. H. Hsu et al., “Light Guide for Pixel Crosstalk Improvement in Deep Submicron CMOS Image Sensor”, IEEE Electron Device Letters, vol. 25, No. 1, Jan. 2004, pp. 22-24.
Yaung et al., “Air-Gap Guard Ring for Pixel Sensitivity and Crosstalk Improvement in Deep Sub-micron CMOS Image Sensor”, IEEE, 2003.
Dickstein & Shapiro LLP
Lee John R.
Micro)n Technology, Inc.
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