Organic light emitting diode driving circuit, display panel, display and driving method

An organic light emitting diode driving circuit comprising an organic light emitting diode, a driving unit controlling a current of the organic light emitting diode and a threshold compensation unit comprising:na first electronic switch with a first connection terminal thereof being connected to a cathode of the organic light emitting diode, a second connection terminal thereof being connected to the driving unit and a switch control terminal thereof being connected to a second control voltage;a second electronic switch with a first connection terminal thereof being connected to a high level, a second connection terminal thereof being connected to a first connection terminal of a third electronic switch, and a switch control terminal thereof being connected to a first control voltage;the third electronic switch with a first connection terminal thereof being connected to the second connection terminal of the second electronic switch, a second connection terminal thereof being connected to a capacitance, and a switch control terminal thereof being connected to a scan voltage;a fourth electronic switch, with a first connection terminal thereof being connected to the driving unit, a second connection terminal thereof being connected to a data voltage, and a switch control terminal thereof being connected to the scan voltage;a fifth electronic switch with a first connection terminal thereof being connected to ground, a second connection terminal thereof being connected to the driving unit, and a switch control terminal thereof being connected to the second control voltage; andthe capacitance with one terminal thereof being connected to ground, and the other terminal thereof being connected to the second connection terminal of the third electronic switch,wherein an anode of the organic light emitting diode is connected to the high level, andthe second connection terminal of the second electronic switch is connected to the second connection terminal of the first electronic switch.

An active organic light emitting diode display panel having an organic light emitting diode driving circuit including an organic light emitting diode, a driving unit controlling a current of the organic light emitting diode and a threshold compensation unit, said threshold compensation unit comprising:na first electronic switch, a first connection terminal thereof being connected to a cathode of the organic light emitting diode, a second connection terminal thereof being connected to the driving unit and a switch control terminal thereof being connected to a second control voltage;a second electronic switch, a first connection terminal thereof being connected to a high level, a second connection terminal thereof being connected to a first connection terminal of a third electronic switch, and a switch control terminal thereof being connected to a first control voltage;the third electronic switch, a first connection terminal thereof being connected to the second connection terminal of the second electronic switch, a second connection terminal thereof being connected to a capacitance, and a switch control terminal thereof being connected to a scan voltage;a fourth electronic switch, a first connection terminal thereof being connected to the driving unit, a second connection terminal thereof being connected to a data voltage, and a switch control terminal thereof being connected to the scan voltage;a fifth electronic switch, a first connection terminal thereof being connected to ground, a second connection terminal thereof being connected to the driving unit, and a switch control terminal thereof being connected to the second control voltage; andthe capacitance, one terminal thereof being connected to ground, and the other terminal thereof being connected to the second connection terminal of the third electronic switch,wherein an anode of the organic light emitting diode is connected to the high level, andthe second connection terminal of the second electronic switch is connected to the second connection terminal of the first electronic switch.

An organic light emitting diode driving method for using an active organic light emitting diode display panel having an organic light emitting diode driving circuit, said organic light emitting diode driving circuit including an organic light emitting diode, a driving unit controlling a current of the organic light emitting diode and a threshold compensation unit, said threshold compensation unit comprising: a first electronic switch with a first connection terminal thereof being connected to a cathode of the organic light emitting diode, a second connection terminal thereof being connected to the driving unit and a switch control terminal thereof being connected to a second control voltage; a second electronic switch with a first connection terminal thereof being connected to a high level, a second connection terminal thereof being connected to a first connection terminal of a third electronic switch, and a switch control terminal thereof being connected to a first control voltage; the third electronic switch with a first connection terminal thereof being connected to the second connection terminal of the second electronic switch, a second connection terminal thereof being connected to a capacitance, and a switch control terminal thereof being connected to a scan voltage; a fourth electronic switch with a first connection terminal thereof being connected to the driving unit, a second connection terminal thereof being connected to a data voltage, and a switch control terminal thereof being connected to the scan voltage; a fifth electronic switch with a first connection terminal thereof being connected to ground, a second connection terminal thereof being connected to the driving unit, and a switch control terminal thereof being connected to the second control voltage; and the capacitance with one terminal thereof being connected to ground, and the other terminal thereof being connected to the second connection terminal of the third electronic switch, an anode of the organic light emitting diode being connected to the high level, and the second connection terminal of the second electronic switch being connected to the second connection terminal of the first electronic switch, said method comprising the steps of:nin a pre-charge phase, the third and the fourth electronic switches being turned on in response to a valid level of the scan voltage, the second electronic switch being turned on in response to the valid voltage of the first control voltage, the first and the fifth electronic switches being turned off in response to an invalid voltage of the second control voltage, and the terminal of the capacitance connected to the third switch transistor being charged to the high level;in a data writing and discharging compensation phase, the third and the fourth electronic switches being turned on in response to the valid level of the scan voltage, the second electronic switch being turned off in response to the invalid voltage of the first control voltage, the first and the fifth electronic switches being turned off in response to the invalid voltage of the second control voltage, and the capacitance discharging to the valid level value of the data voltage through the driving unit;in a switch-buffering phase, the third and the fourth electronic switches being turned off in response to the invalid level of the scan voltage, the second electronic switch being turned off in response to the invalid voltage of the first control voltage, and the first and the fifth electronic switches being turned off in response to the invalid voltage of the second control voltage; andin a driving phase for the organic light emitting diode, the first and the fifth electronic switches being turned on in response to the valid voltage of the second control voltage, the third and the fourth electronic switches being turned off in response to the invalid level of the scan voltage, the second electronic switch being turned off in response to the invalid voltage of the first control voltage, a driving current of the driving unit flowing through the organic light emitting diode to cause it to emit light.