| CPC G09G 3/32 (2013.01) [G09G 3/2007 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0233 (2013.01); G09G 2330/021 (2013.01)] | 20 Claims |
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1. A display device driven such that a period thereof is divided into a display period during which an image is displayed and a sensing period during which characteristics of a driving transistor included in each of pixels are sensed, the display device comprising:
the pixels connected to scan lines, control lines, data lines, and sensing lines;
a scan driver which supplies a scan signal to the scan lines and supplies a control signal to the control lines;
a data driver which supplies one of an image data signal and a sensing data signal to the data lines;
a sensing circuit which senses the characteristics based on a sensing current supplied through the sensing lines during the sensing period; and
a power supply which supplies a voltage of first power to a drain electrode of the driving transistor,
wherein the sensing period includes a first sensing period during which a first sensing current is extracted based on a first sensing data signal corresponding to a first grayscale, and a second sensing period during which a second sensing current is extracted based on a second sensing data signal corresponding to a second grayscale,
wherein the voltage of the first power supplied to the drain electrode of the driving transistor during the first sensing period is a first sensing voltage,
wherein the voltage of the first power supplied to the drain electrode of the driving transistor during the second sensing period is a second sensing voltage different from the first sensing voltage, and
wherein the first sensing voltage and the second sensing voltage are voltages that allow the driving transistor to operate in a saturated state.
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