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US 2011/0032391 A1Published application
Image Sensor with Peripheral Dummy Pixels
AssigneeHimax Imaging Limited
InventorDESMOND CHEUNG
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Abstract
An image sensor with an active pixel array and peripheral dummy pixels is disclosed. The dummy pixels are located between (a) at least a portion of the active pixel array and (b) undesired or potentially interfering noise from a noise source. Outputs of the dummy pixels are coupled to float with respect to the active pixel array, thereby blocking the noise from being coupled into the active pixel array.
Claims23
An image sensor comprising:
- an active pixel array located in an imaging area;
- and
- dummy pixels located between at least a portion of the active pixel array and a noise source;
- wherein outputs of the dummy pixels are coupled to float with respect to the active pixel array.
1 more element
An image sensor comprising:
- an imaging pixel array having imaging pixels;
- a ring of non-imaging pixels surrounding the imaging pixel array;
- and
- a noise source external to the ring of non-imaging pixels;
- wherein unwanted charge originated from the noise source is drained away by the non-imaging pixels.
2 more elements
Dependencies are inferred from the claim text.