Light sensor having IR cut and color pass interference filter integrated on-chip

A light sensor comprising:

• a substrate having a surface;
• a plurality of photodetectors disposed proximate to the surface, the plurality of photodetectors configured to detect light;
• an infrared photodetector disposed proximate to the surface, the infrared photodetector configured to detect infrared light;
• an IR interference filter disposed over the surface and configured to at least substantially block transmission of infrared light to the plurality of photodetectors;
• a first color interference filter disposed proximate to the IR interference filter and configured to filter visible light to pass visible light in a first limited spectrum of wavelengths to at least a first one of the plurality of photodiodes;
• a second color interference filter disposed proximate to the IR interference filter and configured to filter visible light to pass visible light in a second limited spectrum of wavelengths to at least a second one of the plurality of photodiodes;
• and
• a third color interference filter disposed proximate to the IR interference filter and configured to filter visible light to pass visible light in a third limited spectrum of wavelengths to at least a third one of the plurality of photodiodes.

A process comprising:

• providing a plurality of photodetectors proximate to a substrate, each of the plurality of photodetectors configured to detect light and to provide a signal in response thereto;
• depositing the IR cut interference filter on the surface of the substrate over the photodetectors, the IR cut interference filter configured to filter infrared light to at least substantially block infrared light from reaching the plurality of photodetectors;
• and
• depositing the at least one color interference filter on the IR cut interference filter, the at least one color interference filter configured to filter visible light to pass light in a limited spectrum of wavelengths to at least one photodetector of the plurality of photodetectors.