Microcollector for photosensitive devices using sol-gel

Details Microcollector for photosensitive devices using sol-gel Microcollector for photosensitive devices using sol-gel

1998-11-25

2000-12-26

Allen, Stephone B.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

2502081, 257416, H01L 2700

Patent

active

061663697

ABSTRACT:
A microcollector for photosensitive devices such as imaging arrays for digital cameras, scanners and other devices, may be formed on a semiconductor structure adjacent to a photosensitive element. The collector may include reflective surfaces arranged about the photosensitive element so as to reflect incident light towards the photosensitive element. The collector may be used in conjunction with a refractive/diffractive microlens to further focus light onto the photosensitive element. As a result, the fill factor of the photosensitive device may be improved, and the signal to noise ratio may also be enhanced.

REFERENCES:
patent: 5204520 (1993-04-01), Green
patent: 5798557 (1998-08-01), Salatino et al.
patent: 5952645 (1999-09-01), Wang et al.
European Patent Office, Solid Image Pick-Up Element, Dec. 26, 1984, 1 Page.
P. Coudray, et al., Ultraviolet Light Imprinted Sol-Gel Silica Glass Waveguide Devices on Silicon, Jul. 1, 1996, 4 Pages.
D.R. Uhlmann, et al., "Sol-gel derived coatings on glass", Journal of Non-Crystalline Solids (1997); pp. 113-119.
C.-Y. Li, et al., "Sol-gel integrated optical coupler by ultraviolet light imprinting", IEEE 1995.
Mark P. Andrews, "An Overview of Sol-gel Guest-Host Materials Chemistry for Optical Devices", SPIE vol. 2997; pp. 48-59.

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