Pixel circuit, driving method thereof, display panel and display apparatus

A display panel comprising:

• a plurality of scan lines arranged in a first direction;
• a plurality of light emission control lines arranged in the first direction;
• a plurality of data lines arranged in a second direction intersecting the first direction;
• and
• a pixel array comprising a plurality of pixel circuits arranged at intersections of the scanning lines, the light emission control lines and the data lines, each of the pixel circuits being connected to three respective ones of the scanning lines and a respective one of the light emission control lines and comprising a light-emitting circuit, a driving circuit, a compensation circuit, and an initialization circuit, wherein:
• the initialization circuit is connected to a first voltage terminal and first and third ones of the three respective scan lines and is configured to initialize the driving circuit and the light-emitting circuit with a first voltage supplied from the first voltage terminal in response to a first scan signal on the first scan line and a third scan signal on the third scan line;
• the compensation circuit is connected to a second one of the three respective scan lines, a data line and a second voltage terminal and is configured to, responsive to a second scan signal on the second scan line, write a data voltage on the data line into the driving circuit and perform threshold voltage compensation on the driving circuit;
• the driving circuit is connected to the second voltage terminal and the respective light emission control line and is configured to generate, responsive to a light-emitting control signal on the respective light emission control line, a current dependent on the written data voltage;
• and
• the light-emitting circuit is connected between the driving circuit and the first voltage terminal and is configured to be driven to emit light by the current,
• wherein the initialization circuit comprises:
• a first transistor having a gate connected to the first scan line, a first electrode connected to the first voltage terminal, and a second electrode connected to a first node connected between the driving circuit and the light-emitting circuit;
• and
• a second transistor having a gate connected to the third scan line, a first electrode connected to the first voltage terminal, and a second electrode connected to a second node connected to the driving circuit, and
• wherein the second transistor and the first transistor are configured to be turned on sequentially in response to the third scan signal and the first scan signal respectively, so as to sequentially initialize the driving circuit and the light-emitting circuit.

A method of driving a pixel circuit, the pixel circuit comprising an initialization circuit connected to a first voltage terminal, a first scan line, and a third scan line, a compensation circuit connected to a second scan line, a data line, and a second voltage terminal, a driving circuit connected to the second voltage terminal and a light emission control line, and a light-emitting circuit connected between the driving circuit and the first voltage terminal, wherein the initialization circuit comprises:

• a first transistor having a gate connected to the first scan line, a first electrode connected to the first voltage terminal, and a second electrode connected to a first node connected between the driving circuit and the light-emitting circuit;
• and a second transistor having a gate connected to the third scan line, a first electrode connected to the first voltage terminal, and a second electrode connected to a second node connected to the driving circuit, and
• the method comprising:
• initializing, by the initialization circuit, the driving circuit and the light-emitting circuit with a first voltage supplied from the first voltage terminal in response to a first scan signal on the first scan line and a third scan signal on the third scan line;
• writing, by the compensation circuit in response to a second scan signal on the second scan line, a data voltage on the data line into the driving circuit and performing threshold voltage compensation on the driving circuit;
• and
• supplying, by the driving circuit in response to a light-emitting control signal on the light emission control line, a current dependent on the written data voltage to drive the light-emitting circuit to emit light,
• wherein the initializing the driving circuit and the light-emitting circuit comprises sequentially turning on the second transistor and the first transistor in response to the third scan signal and the first scan signal respectively, so as to sequentially initialize the driving circuit and the light-emitting circuit.