Electronic serialization of image sensors
View Patent ↗An image sensor includes a substrate having a plurality of photosensitive sites for capturing an image and a plurality of additional photosensitive sites adjacent the image capturing photosensitive sites in which there is no image capture; and a digital signal embedded in one or more of the additional photosensitive sites for the purpose of identification.
1. An image sensor, comprising:
a plurality of photosensitive sites arranged into an active area and a non-active area, wherein the photosensitive sites in the active area are used to capture an image; and
a metal plate covering at least a portion of the photosensitive sites in the non-active area, wherein the metal plate includes one or more openings positioned at predetermined locations over respective photosensitive sites in the non-active area to form a unique pattern that is associated with the image sensor.
2. The image sensor of claim 1 , wherein the one or more openings positioned at predetermined locations over respective photosensitive sites in the non-active area provides for electronic identification of the image sensor without affecting an image captured by the plurality of photosensitive sites in the active area.
3. The image sensor of claim 1 , wherein the unique pattern of one or more openings identifies individually or in any combination a particular manufacturer, a lot, a wafer, and a location of the image sensor on the wafer.
4. The image sensor of claim 1 , wherein the image sensor is included in an image capture device.