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Two-transistor pixel array

  • US 8,247,849 B2
  • Filed: 03/15/2012
  • Issued: 08/21/2012
  • Est. Priority Date: 06/30/2010
  • Status: Active Grant
First Claim
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1. A device comprising:

  • an array of pixels, at least some pixels in the array comprising;

    a chemically-sensitive field-effect transistor (chemFET) including a first source/drain terminal and a second source/drain terminal, and a floating gate coupled to a passivation layer; and

    a second transistor including a first source/drain terminal, a second source/drain terminal and a gate terminal, wherein the first source/drain terminal of the second transistor is directly connected to the first source/drain terminal of the chemFET; and

    a plurality of pairs of lines coupled to pixels in the array, wherein each pair of lines includes a first line directly connected to second source/drain terminals of chemFETs of a corresponding first plurality of pixels in the array, and a second line directly connected to second source/drain terminals of second transistors of the corresponding first plurality of pixels in the array.

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