Pixel circuit, driving method, organic electroluminescent display panel, and display device

A method for driving a pixel circuit that comprises a driving controller, a light emitter, a light emitting controller, an initialization controller, and a compensation controller, wherein the driving controller is configured to supply a driving current to the light emitter for driving the light emitter to emit light;

• wherein in an initialization phase, the initialization controller is configured to, under the control of an initialization control signal, supply an initialization signal to the driving controller;
• wherein in the compensation phase, the compensation controller is configured to, under the control of a compensation control signal and a data signal, write the data signal and a preset threshold voltage into the driving controller, wherein the preset threshold voltage has a same threshold voltage as the driving controller to compensate the drift of the threshold voltage of the driving controller, and wherein in a light emitting phase, the light emitting controller is configured to, under the control of a light emitting control signal, supply a voltage of a first reference voltage line to an input terminal of the driving controller, store the data signal and the preset threshold voltage in another input terminal of the driving controller, and apply the driving current from the driving controller to the light emitter for driving the light emitter to emit light, the method comprising:
• in the initialization phase, by means of the initialization controller which is under the control of the initialization control signal, supplying the initialization signal to the first input terminal of the driving controller;
• in the compensation phase, by means of the compensation controller which is under the control of the compensation control signal and the data signal, writing the data signal and the preset threshold voltage into the second input terminal of the driving controller;
• wherein the preset threshold voltage has a same threshold voltage as the driving controller;
• in the light emitting phase, by means of the light emitting controller which is under the control of the light emitting control signal, supplying the voltage of the first reference voltage line to the second input terminal of the driving controller, storing the data signal and the preset threshold voltage in the first input terminal of the driving controller, and outputting the driving current from the driving controller to the light emitter for driving the light emitter to emit light.

An organic electroluminescent display panel, comprising a pixel circuit, wherein the pixel circuit comprises a driving controller, a light emitter, a light emitting controller, an initialization controller, and a compensation controller,

• wherein the driving controller is configured to supply a driving current to the light emitter for driving the light emitter to emit light;
• wherein in an initialization phase, the initialization controller is configured to, under the control of an initialization control signal, supply an initialization signal to the driving controller;
• wherein in the compensation phase, the compensation controller is configured to, under the control of a compensation control signal and a data signal, write the data signal and a preset threshold voltage into the driving controller, wherein the preset threshold voltage has a same threshold voltage as the driving controller to compensate the drift of the threshold voltage of the driving controller;
• and
• wherein in a light emitting phase, the light emitting controller is configured to, under the control of a light emitting control signal, supply a voltage of a first reference voltage line to an input terminal of the driving controller, store the data signal and the preset threshold voltage in another input terminal of the driving controller, and apply the driving current from the driving controller to the light emitter for driving the light emitter to emit light.