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US 2010/0148291 A1Published application
Ultraviolet light filter layer in image sensors
OwnerCristian A. Tivarus, John P. McCarten +1inventors
InventorsCristian A. Tivarus, John P. McCarten, Joseph R. Summa
Life of this patent
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Abstract
An image sensor includes one or more ultraviolet (UV) light filter layers disposed between an insulating layer and a color filter array (CFA) layer. The one or more UV light filter layers reflect or absorb UV light while transmitting visible light.
Claims20
An image sensor, comprising:
- at least one ultraviolet light filter layer disposed between a color filter array and an insulating layer, wherein the at least one ultraviolet light filter layer blocks UV light while transmitting visible light.
A back-illuminated image sensor, comprising:
- a sensor layer disposed between an insulating layer and a circuit layer electrically connected to the sensor layer, wherein a frontside of the sensor layer is adjacent to the circuit layer and a backside of the sensor layer is adjacent to the insulating layer;
- one or more ultraviolet light filter layers overlying the insulating layer, wherein the at least one ultraviolet light filter layer blocks UV light while transmitting visible light;
- and
- a color filter array formed over the one or more ultraviolet light filter layers.
1 more element
A method for fabricating an image sensor having an imaging area that includes a plurality of pixels, the method comprising:
- forming an insulating layer over the imaging area;
- forming one or more ultraviolet light filter layers over the insulating layer, wherein the at least one ultraviolet light filter layer blocks UV light while transmitting visible light;
- and
- forming a color filter array over the one or more ultraviolet light filter layers.
1 more element
Dependencies are inferred from the claim text.