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Image sensors with LED flicker mitigaton global shutter pixles

  • US 10,072,974 B2
  • Filed: 06/06/2016
  • Issued: 09/11/2018
  • Est. Priority Date: 06/06/2016
  • Status: Active Grant
First Claim
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1. An image sensor pixel comprising:

  • a photodiode that generates charge in response to incident light during an exposure period;

    a threshold transistor that is coupled to the photodiode and that is set to a threshold voltage, wherein a portion of the generated charge overflows past the threshold transistor as overflow charge;

    a reset transistor coupled to a voltage supply, wherein the threshold transistor is interposed between the photodiode and the reset transistor;

    a first storage structure coupled to the threshold transistor;

    a second storage structure coupled to the photodiode through the first storage structure; and

    a floating diffusion node coupled to the second storage structure.

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