| CPC G09G 3/006 (2013.01) [G09G 3/32 (2013.01); G09G 2310/0278 (2013.01)] | 8 Claims |
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1. An inspection method of a display device, the inspection method comprising:
checking connection failures of light emitting elements included in a pixel and connected in series based on a first control signal, a second control signal, and a voltage of an initialization power source,
wherein the pixel comprises:
a pixel circuit controlling a current flowing from a first power source to a second node in response to a voltage of a first node;
a first light emitting element connected to the second node;
a first transistor having a first electrode connected to the second node, a second electrode connected to a sensing line supplying the voltage of the initialization power source, and a gate electrode connected to a control line;
a second light emitting element electrically connected between the first light emitting element and a second power source; and
a second transistor having a first electrode connected to a third node between the first light emitting element and the second light emitting element, a second electrode of the second transistor connected to the second power source, and a gate electrode connected to a first inspection control line, and
wherein the checking the connection failures of the light emitting elements includes:
supplying the initialization power source of a first voltage level to the sensing line, and turning on the first transistor and the second transistor;
determining that a connection of the second light emitting element is abnormal during light emission by the pixel; and
determining that a connection of the first light emitting element is abnormal during a period that the pixel does not emit light.
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