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Selection and output circuit, and display device

  • US 10,586,484 B2
  • Filed: 06/29/2018
  • Issued: 03/10/2020
  • Est. Priority Date: 08/22/2017
  • Status: Active Grant
First Claim
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1. A selection and output circuit, comprising:

  • a first control sub-circuit, a second control sub-circuit, a first output sub-circuit, a second output sub-circuit, a first input terminal, a second input terminal, a reference signal terminal, a control terminal, and an output terminal, wherein;

    the first control sub-circuit comprises a first switch transistor and a first resistor, whereinthe first switch has a gate connected with the control terminal, a first electrode connected with the reference signal terminal, and a second electrode connected with the first node; and

    the first resistor has one terminal connected with a first node, and the other terminal connected with the second input terminal,the first control sub-circuit is configured to provide the first node with a first control signal or a second control signal under the control of the control terminal;

    wherein the first control signal is from the reference signal terminal, the second control signal is from the second input terminal;

    the first control signal and the second control signal are inverted signals;

    the second control sub-circuit comprising a NOT gate,wherein the NOT gate has an input terminal connected with the first node, a first power supply terminal connected with the reference signal terminal, a second power supply terminal connected with the second input terminal, and an output terminal connected with the second output terminal,the second control sub-circuit is configured to provide the second output sub-circuit with a signal of the second input terminal when the signal of the first node is the first control signal via the NOT gate, and to provide the second output sub-circuit with a signal of the reference signal terminal when the signal of the first node is the second control signal via the NOT gate;

    the first output sub-circuit comprising a second switch transistor,wherein the second switch transistor has a gate connected with the first node, a first electrode connected with the first input terminal, and a second electrode connected with the output terminal,the first output sub-circuit is configured to provide the output terminal with a signal of the first input terminal when the signal of the first node is the first control signal; and

    the second output sub-circuit comprising a third switch transistor,wherein the third switch transistor has a gate connected with the output terminal of the NOT gate of the second control sub-circuit, a first electrode connected with the second input terminal, and a second electrode connected with the output terminal,the second output sub-circuit is configured to provide the output terminal with the signal of the second input terminal when the second control sub-circuit provides the second output sub-circuit with the signal of the reference signal terminal,the selection and output circuit, further comprising a first protection sub-circuit and a second protection sub-circuit, wherein;

    the first protection sub-circuit comprises a first diode,wherein the first diode has an input terminal connected with the first output sub-circuit, and an output terminal connected with the output terminal,the first protection sub-circuit is configured to provide the output terminal with the signal output by the first output sub-circuit;

    the second protection sub-circuit comprising a second diode,wherein the second diode has an input terminal connected with the second output sub-circuit, and an output terminal connected with the output terminal,the second protection sub-circuit is configured to provide the output terminal with the signal output by the second output sub-circuit.

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