Patent ID: 8810559
Filing Date: 2014-08-19
Classification: G09G

Abstract:
1. A pixel structure, comprising: a first switching transistor transmitting a data signal to a first node according to a scan signal; a setting unit controlling the voltage level of the first node and the voltage level of a second node according to the scan signal and a discharging signal; a capacitor coupled between the first and the second nodes; a driving transistor comprising a first threshold voltage and a gate coupled to the second node; a second switching transistor comprising a gate receiving an emitting signal; and a luminous element coupled to the driving transistor and the second switching transistor in series between a first operation voltage and a second operation voltage, wherein during a first period, the setting unit controls the voltage level of the first node to equal a first reference voltage and controls the voltage level of the second node to equal a second reference voltage, and the first reference voltage exceeds the second reference voltage, wherein during a second period, the first switching transistor transmits the first signal to the first node, and the setting unit controls the voltage level of the second node to equal a difference between the first operation voltage and the first threshold voltage, and wherein during a third period, the setting unit controls the voltage level of the first node to equal the first reference voltage and floats the second node.