Imaging systems with phase detection pixels
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United States of America Patent
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Aug 8, 2017
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N/A
app pub date -
Jan 6, 2015
filing date -
Jan 6, 2015
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Abstract
An imaging device may include an image pixel array with pixels used to gather phase detection information. The pixels in the image pixel array may use a photosensitive region to generate charge during an integration period. During the integration period, certain pixels in the image pixel array may not be needed to gather phase detection information. These pixels may be electrically connected to a bias voltage supply line during the integration period so that any generated charge is drained to the bias voltage supply line. Draining charge in the unused pixels may prevent blooming that would compromise the phase detection information gathered by neighboring pixels.
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