Pixel circuit, driving method, display device, and inspection method

A pixel circuit comprising:

• a sampling transistor having a gate electrode controlled by a first scanning line and a second electrode connected to a signal line;
• a driving transistor having a gate electrode connected to a third electrode of the sampling transistor, and having a source electrode and a drain electrode;
• a light emitting element connected between a drain electrode of the driving transistor and a second power supply line and driven by current supplied from the driving transistor;
• a storage capacitor connected between the gate and source electrodes of the driving transistor;
• a switching transistor having a gate electrode controlled by a second scanning line, a second electrode connected to the source electrode of the driving transistor, and a third electrode connected to a preset potential line;
• a diode-connected transistor having gate and second electrodes connected to the source electrode of the driving transistor and a third electrode connected to a first power supply line;
• and
• a shunt transistor having a gate electrode controlled by a third scanning line, a second electrode connected to the drain of the driving transistor, and a third electrode connected to a sink potential line;
• wherein a first potential line of the pixel circuit is connected to a test point that is operable to connect to a probe for measuring current through the driving transistor prior to formation of the light emitting element.