Pixel circuit having threshold voltage compensation, driving method thereof, organic electroluminescent display panel, and display device

  • US 10,192,487 B2
  • Filed: 09/30/2016
  • Issued: 01/29/2019
  • Est. Priority Date: 01/06/2016
  • Status: Active Grant
First Claim
Patent Images

1. A pixel circuit, comprising a light emitting element, a driving control module, a resetting control module, a charging control module, a writing control module, and a light emitting control module, wherein:

  • a first control terminal and a second control terminal of the resetting control module are connected to a reset signal terminal, an input terminal of the resetting control module is connected to a first level signal terminal, a first output terminal of the resetting control module is connected to a first node, and a second output terminal of the resetting control module is connected to an output terminal of the driving control module and an input terminal of the light emitting element;

    the resetting control module is configured to reset the first node and the light emitting element;

    a control terminal of the charging control module is connected to the reset signal terminal, an input terminal of the charging control module is connected to an output terminal of the light emitting control module and a first input terminal of the driving control module, and an output terminal of the charging control module is connected to a second node;

    the charging control module is configured to charge the second node through the light emitting control module and discharge the second node through the driving control module and the resetting control module;

    a control terminal of the writing control module is connected to a scan signal terminal, an input terminal of the writing control module is connected to a data signal terminal, and an output terminal of the writing control module is connected to the second node;

    the writing control module is configured to write a data signal to the second node;

    a control terminal of the light emitting control module is connected to a light emitting signal terminal, and an input terminal of the light emitting control module is connected to a second level signal terminal;

    the light emitting control module is configured to control the driving control module to drive the light emitting element to emit light;

    a second input terminal of the driving control module is connected to the first node, and a third input terminal of the driving control module is connected to the second node; and

    an output terminal of the light emitting element is connected to a third level signal terminal,wherein the driving control module comprises a driving transistor having a gate connected to the first node, a first electrode connected to the input terminal of the charging control module and the output terminal of the light emitting control module, a second electrode connected to the input terminal of the light emitting element and the second output terminal of the resetting control module without intervention of any transistor.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×