Pixel unit driving circuit, pixel unit and display device

A pixel unit includes an OLED, and a pixel unit driving circuit, said pixel unit driving circuit being connected to the cathode of said OLED, the anode of said OLED being connected to the high-voltage signal terminal,

• wherein said pixel unit driving circuit comprises:
• a switching unit having a first terminal connected to a high-voltage signal terminal, a second terminal connected to a light-emitting device, a third terminal connected to a first control line, and a fourth terminal connected to a second control line;
• a driving transistor having a drain connected to the switching unit, and a source connected to a low-voltage signal terminal;
• a capacitance storage unit having a first terminal connected to the gate of the driving transistor, a second terminal connected to the source of the driving transistor, and a third terminal connected to the second control line.

A display device comprises plurality of pixel units,

• the pixel unit includes an OLED, and a pixel unit driving circuit, said pixel unit driving circuit being connected to the cathode of said OLED, the anode of said OLED being connected to the high-voltage signal terminal,
• wherein said pixel unit driving circuit comprises:
• a switching unit having a first terminal connected to a high-voltage signal terminal, a second terminal connected to a light-emitting device, a third terminal connected to a first control line, and a fourth terminal connected to a second control line;
• a driving transistor having a drain connected to the switching unit, and a source connected to a low-voltage signal terminal;
• a capacitance storage unit having a first terminal connected to the gate of the driving transistor, a second terminal connected to the source of the driving transistor, and a third terminal connected to the second control line.