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DETECTION SIGNAL SELECTING CIRCUIT, THIN FILM TRANSISTOR SUBSTRATE, AND DISPLAY PANEL

  • US 20190333432A1
  • Filed: 08/28/2018
  • Published: 10/31/2019
  • Est. Priority Date: 04/28/2018
  • Status: Active Grant
First Claim
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1. A detection signal selecting circuit, used in a scan driving circuit of a display panel, the scan driving circuit comprising multi-stages driving units, each stage of the driving units outputting a scan driving signal, wherein the detection signal selecting circuit comprises:

  • a first switch unit and a second switch unit, the first switch unit comprising a first control terminal, a first input terminal, and a first output terminal, the second switch unit comprising a second control terminal, a second input terminal, and a second output terminal, the first output terminal connecting to the second output terminal, the first input terminal connecting to an output terminal of a first-stage of the driving units, and the second input terminal connecting to an output terminal of a last-stage of the driving units;

    wherein a first control signal inputted from the first control terminal controls the first switch unit to be turned on or off, and a second control signal inputted from the second control terminal controls the second switch unit to be turned on or off, to selectively output an output signal of the first output terminal or an output signal of the second output terminal based on an output sequence of the scan driving signal;

    wherein the first switch unit comprises a first thin-film transistor, the first thin-film transistor comprises a first gate, a first source, and a first drain, the first gate connects to the first control terminal, the first source or the first drain connects to the first input terminal, and another one of the first source and the first drain connects to the first output terminal; and

    wherein the second switch unit comprises a second thin-film transistor, the second thin-film transistor comprises a second gate, a second source, and a second drain, the second gate connects to the second control terminal, the second source or the second drain connects to the second input terminal, and another one of the second source and the second drain connects to the second output terminal.

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