| 摘要 |
PURPOSE: To provide a display device in which a defect inspection that is in line with the actual display condition is easily conducted. CONSTITUTION: While a switching first transistor Tr1 is turned on by a gate signal, a holding capacitor C1 holds its voltage signal according to the data voltage signals inputted to the source terminal of the transistor Tr1. A second transistor Tr2 controls the amount of current, that flows into light emitting elements from a power supply line PVdd line according to the voltage signals. At that time, an adding capacitor C2 accumulates electric charges according to the amount of current being controlled. Thus, a defect inspection that is made suitable to an actual display condition is conducted by inspecting the electric charges.
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