Display device and driving method of the same

A method for driving a display device including pixels, a data driver, a sensing unit, and a timing controller, the method comprising:

• applying, by a first transistor, a driving current to at least one light emitting element, wherein each of the pixels includes the light emitting element and the first transistor;
• supplying, by the data driver, a first data voltage corresponding to first sensing data to at least one pixel of the pixels during a sensing period, and supplying, to the at least one pixel, a second data voltage corresponding to second sensing data different from the first sensing data or a third data voltage corresponding to third sensing data, in a verification period for detecting a compensation degree of the sensing period;
• extracting, by the sensing unit, a first sensing value corresponding to the first sensing data, a second sensing value corresponding to the second sensing data, and a third sensing value corresponding to the third sensing data through sensing lines connected to the at least one pixel;
• and
• generating, by the timing controller, image data compensated by using the first sensing value, and detecting the compensation degree by using the second sensing value or the third sensing value,
• wherein the extracting of, by the sensing unit, the first sensing value includes supplying an initializing voltage to the sensing lines during a partial period in the sensing period,
• wherein the verification period includes a first verification period,
• wherein the supplying of, by the data driver, the second data voltage includes supplying, by the data driver, to the at least one pixel, a voltage obtained by adding the initialization voltage and a threshold voltage, and
• wherein the threshold voltage is included in the first sensing value, and the obtained voltage corresponds to the second sensing data.