Patent ID: 9478164
Filing Date: 2016-10-25
CPC Classification: G09G

Claim Text:
1. A compensation pixel circuit comprising an organic light emitting diode and a driving transistor, a first terminal of the driving transistor being connected to an anode of the organic light emitting diode, wherein the compensation pixel circuit further comprises: a resetting module including a capacitor whose first terminal is connected to a gate of the driving transistor and configured to make the gate of the driving transistor discharge so that a gate voltage is reduced to a magnitude of a threshold voltage of the organic light emitting diode; a data voltage writing module configured to discharge at the gate of the driving transistor so as to connect a data voltage to a second terminal of the driving transistor after the gate voltage is reduced to the magnitude of the threshold voltage of the organic light emitting diode; a light emitting control module configured to connect a source of the driving transistor and a second terminal of the capacitor to an operating voltage at a high level after data voltage writing is completed; and a switching module configured to disconnect the driving transistor from the organic light emitting diode when the data voltage is connected to the second terminal of the driving transistor; wherein the first terminal of the driving transistor is connected to the anode of the organic light emitting diode via the switching module, the switching module is further configured to connect the driving transistor to the organic light emitting diode when it is discharged at the gate of the driving transistor, and the first terminal of the driving transistor is a drain, and the second terminal of the driving transistor is the source of the driving transistor.