LIGHT-EMITTING COMPONENT DRIVING CIRCUIT AND RELATED PIXEL CIRCUIT AND APPLICATIONS

  • US 20130069852A1
  • Filed: 09/10/2012
  • Published: 03/21/2013
  • Est. Priority Date: 09/19/2011
  • Status: Abandoned Application
First Claim
Patent Images

1. A light-emitting component driving circuit, comprising:

  • a driving unit, coupled between a power supply voltage and a light-emitting component, comprising a driving transistor, and controlling a driving current flowing through the light-emitting component in a light enable phase;

    a data storage unit, coupled to the driving unit, comprising a shift-compensation transistor and a storage capacitor coupled between the driving transistor and a reference potential, and storing a data voltage and a threshold voltage of the shift-compensation transistor through the storage capacitor in a data-writing phase; and

    a light-emitting control unit, coupled between the driving unit and the light-emitting component, and conducting the driving current from the driving unit to the light-emitting component in the light enable phase,wherein in the light enable phase, the driving unit generates the driving current flowing through the light-emitting component in response to a cross-voltage of the storage capacitor, and the driving current is unaffected by a threshold voltage of the driving transistor in response to the storage of the threshold voltage of the shift-compensation transistor.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×