Patent ID: 8982020
Filing Date: 2015-03-17
Classification: G09G

Abstract:
1. A pixel driving circuit of an organic light-emitting diode, comprising: a first transistor, comprising: a capacitor, comprising: wherein in a first period, the power source does not provide a power supply voltage to the first node, and a data voltage is written in the first node and a variable voltage is written in the second node; and wherein in a second period, the power source provides the power supply voltage to the first node, such that the voltage of the first node is pulled up to the power supply voltage, and the voltage of the second node is correspondingly pulled up to the sum of the variable voltage and the power supply voltage subtracting the data voltage, and the first transistor provides a driving current to the organic light-emitting diode based on the voltage of the first node and the voltage of the second node.