| 摘要 |
An image sensor device (and method of making same) that includes a substrate with front and back opposing surfaces, a plurality of photo detectors formed at the front surface, and a plurality of contact pads formed at the front surface which are electrically coupled to the photo detectors. A cavity is formed into the back surface. A plurality of secondary cavities are formed into a bottom surface of the cavity such that each secondary cavity is disposed over one of the photo detectors. Absorption compensation material having light absorption characteristics that differ from those of the substrate is disposed in the secondary cavities. A plurality of color filters are each disposed in the cavity or in one of the secondary cavities and over one of the photo detectors. The plurality of photo detectors are configured to produce electronic signals in response to light incident through the color filters.
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