Pixel driving circuit, pixel driving method, display panel and display device

A pixel driving circuit, comprising:

• a driving signal control sub-circuit and a driving duration control sub-circuit;
• wherein
• the driving signal control sub-circuit is electrically connected to a first scanning signal terminal, a first data signal terminal, a first voltage signal terminal, an enable signal terminal, and the driving duration control sub-circuit, and is configured to provide a driving signal to the driving duration control sub-circuit under control of the first scanning signal terminal and the enable signal terminal;
• and the driving signal is related to a first data signal received at the first data signal terminal and a first voltage signal received at the first voltage signal terminal;
• and
• the driving duration control sub-circuit is further electrically connected to a second scanning signal terminal, a second data signal terminal, the enable signal terminal and an element to be driven, and is configured to transmit the driving signal to the element to be driven under control of the second scanning signal terminal and the enable signal terminal;
• and a duration for which the driving signal is transmitted to the element to be driven is related to a second data signal received at the second data signal terminal;
• the driving signal control sub-circuit includes a first data writing unit, a first driving unit, and a first control unit;
• wherein
• the first data writing unit is electrically connected to the first scanning signal terminal, the first data signal terminal and the first driving unit, and is configured to write the first data signal received at the first data signal terminal into the first driving unit under the control of the first scanning signal terminal;
• the first driving unit is further electrically connected to the first voltage signal terminal and the first control unit, and is configured to generate the driving signal according to the written first data signal and the first voltage signal received at the first voltage signal terminal, and transmit the driving signal to the first control unit;
• the first control unit is further electrically connected to the enable signal terminal, the first voltage signal terminal and the driving duration control sub-circuit, and is configured to transmit the driving signal to the driving duration control sub-circuit according to the first voltage signal under control of the enable signal terminal;
• the driving duration control sub-circuit includes a second data writing unit, a second control unit, and a second driving unit;
• the second data writing unit is electrically connected to the second scanning signal terminal, the second data signal terminal, and the second driving unit, and is configured to write a second data signal with a set working potential received at the second data signal terminal into the second driving unit under the control of the second scanning signal terminal;
• the second control unit is electrically connected to the enable signal terminal, the second data signal terminal and the second driving unit, and is configured to transmit a second data signal with a potential varying within a set range received at the second data signal terminal to the second driving unit under the control of the enable signal terminal;
• the second driving unit is further electrically connected to the driving signal control sub-circuit, and is configured to transmit the driving signal to the second control unit and control a duration for which the driving signal is transmitted to the second control unit, according to the second data signal with the set working potential and the second data signal with the potential varying within the set range;
• and
• the second control unit is further electrically connected to the element to be driven, and is further configured to transmit the driving signal to the element to be driven.