Patent ID: 9343012
Filing Date: 2016-05-17
CPC Classification: G09G

Claim Text:
1. A driving circuit of an active matrix/organic light emitting diode (AMOLED) display, comprising: a first semiconductor controllable switch; a second semiconductor controllable switch; an energy-storage capacitor; an organic light emitting diode; a sequential control unit that divides a driving time of one frame of the organic light emitting diode into driving times of N subframes; and an over-voltage driving unit that increases current of the organic light emitting diode when the organic light emitting diode displays; the over-voltage driving unit comprises a data driving unit that provides the data driving signal and a gamma correction unit coupled to the data driving unit; wherein an output end of the second semiconductor controllable switch is coupled to an anode of the organic light emitting diode, a source electrode of the first semiconductor controllable switch receives a data driving signal of the AMOLED, a gate electrode of the first semiconductor controllable switch receives a scan driving signal of the organic light emitting diode, a drain electrode of the first semiconductor controllable switch is connected with a gate electrode of the second semiconductor controllable switch, and the energy-storage capacitor is connected in series between a source electrode and the gate electrode of the second semiconductor controllable switch; wherein the data driving signal is divided into an active signal that chives display of the organic light emitting diode, and a blanking signal that turns off display of the organic light emitting diode in tire driving time of each of the subframes; wherein N is a natural number and is greater than or equal to 2; in a time of outputting any one or more blanking signals, the over-voltage driving unit increases current of the organic light emitting diode through increasing a voltage of an output end of the second semiconductor controllable switch, reducing a voltage of the cathode of the organic light emitting diode, and increasing an output voltage of the gamma correction unit.