Light guide array for an image sensor

Details Light guide array for an image sensor Light guide array for an image sensor

2008-07-16

2010-10-19

Ko, Tony (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C348S272000, C257S432000, C257S291000

Reexamination Certificate

active

07816641

ABSTRACT:
An image sensor pixel that includes a photoelectric conversion unit supported by a substrate and an insulator adjacent to the substrate. The pixel includes a light guide that is located within an opening of the insulator and extends above the insulator such that a portion of the light guide has an air interface. The air interface improves the internal reflection of the light guide. Additionally, the light guide and an adjacent color filter are constructed with a process that optimizes the upper aperture of the light guide. These characteristics of the light guide eliminate the need for a microlens.

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