Pixel driving circuit, driving method, pixel unit, and display apparatus

A pixel driving circuit, comprising:

• a driving transistor, a first electrode of which is connected to a light emitting component;
• a charging/discharging circuitry, a first terminal of which is connected to a second electrode of the driving transistor;
• a light-emitting control circuitry, connected to a first scan line, the second electrode of the driving transistor, and a first level output terminal, and configured to enable the second electrode of the driving transistor to be electrically connected to the first level output terminal under the control of the first scan line;
• a data write-in control circuitry, connected to a data line, a second scan line, and a gate electrode of the driving transistor, and configured to enable the gate electrode of the driving transistor to be electrically connected to the data line under the control of the second scan line;
• and
• a charging/discharging control circuitry, connected to the data line, the first electrode of the driving transistor, a second level output terminal, the first scan line, a second terminal of the charging/discharging circuitry, and the gate electrode of the driving transistor, and configured to enable the first electrode of the driving transistor to be electrically connected to the second level output terminal under the control of the data line, and enable the second terminal of the charging/discharging circuitry to be electrically connected to the gate electrode of the driving transistor under the control of the first scan line.