Patent ID: 9633603
Date: 2017-04-25
CPC Classifications: G09G

Claim:
1. A pixel compensating circuit of an organic light emitting display comprising: a first capacitor; a driving transistor, configured to provide a driving current determined by a voltage difference between the driving transistor's gate electrode and source electrode; an organic light emitting diode element, configured to emit light in response to the driving current, and a cathode of which is connected to a low potential; a first transistor, driven by a first driving signal, configured to transmit a data signal to the first capacitor's first electrode plate; a second transistor, driven by a second driving signal, configured to transmit a reference voltage signal to the first capacitor's first electrode plate; a third transistor, driven by the first driving signal, configured to act as a switch between the driving transistor's gate electrode and drain electrode; a fourth transistor, driven by a third driving signal, configured to transmit the driving transistor's driving current to the organic light emitting diode element, wherein the third driving signal is provided by gate driving lines of the organic light emitting display, and an electrode of the fourth transistor is connected with the organic light emitting diode element; and a fifth transistor, driven by a fourth driving signal, configured to transmit a supply voltage to the driving transistor's source electrode, wherein a driving timing of the pixel compensating circuit comprises a node resetting stage, a threshold detecting stage, a data inputting stage and a light emitting stage.