Display device

1 . A display device comprising:

a light-emitting element;

a driving transistor connected between a driving voltage line and an anode electrode of the light-emitting element;

a second transistor connected between a data line and a gate electrode of the driving transistor;

a third transistor connected between the driving voltage line and a source electrode of the driving transistor;

a first capacitor connected between the gate electrode of the driving transistor and a second node located between the third transistor and the source electrode of the driving transistor;

a fourth transistor between an initialization line and an anode electrode of the light-emitting element and the fourth transistor being directly connected to the anode electrode of the light emitting element; and

a fifth transistor connected between the anode electrode of the light-emitting element and a sensing line,

wherein the fifth transistor remains turned off during normal operation of the display device, wherein the fifth transistor is turned on during fabrication or testing of the display device.

2 . The display device of claim 1 , further comprising:

a second capacitor connected between the gate electrode of the driving transistor and the anode electrode of the light-emitting element.

3 . The display device of claim 2 , further comprising: a first gate line connected to a gate electrode of the second transistor;

an emission line connected to a gate electrode of the third transistor;

a second gate line connected to a gate electrode of the fourth transistor; and

a third gate line connected to a gate electrode of the fifth transistor.

4 . The display device of claim 3 , wherein a third gate signal of the third gate line has a non-active level.

5 . The display device of claim 4 , wherein in an initialization/write period, an emission signal of the emission line, a first gate signal of the first gate line, and a second gate signal of the second gate line each have an active level, while a third gate signal of the third gate line has a non-active level,

wherein in a compensation period, the first gate signal and the second gate signal each have the active level, while the emission signal and the third gate signal each have the non-active level,

wherein in a bypass period, the emission signal and the second gate signal each have the active level, while the first gate signal and the third gate signal each have the non-active level, and

wherein in an emission period, the emission signal has the active level, while the first gate signal and the second gate signal each have the non-active level.

6 . The display device of claim 5 , wherein a previous data voltage is applied to the data line in the initialization/write period and the compensation period,

wherein a current data voltage is applied to the data line in the emission period, and

wherein a transient voltage transitioning from the previous data voltage to the current data voltage is applied to the data line in the bypass period.

7 . The display device of claim 1 , further comprising:

a detector or a power supply unit connected to the sensing line.

8 . A display device comprising:

a light-emitting element;

a driving transistor connected between a driving voltage line and an anode electrode of the light-emitting element;

a second transistor connected between a data line and a gate electrode of the driving transistor;

a third transistor connected between the driving voltage line and a source electrode of the driving transistor;

a first capacitor connected between the gate electrode of the driving transistor and a second node located between the third transistor and the source electrode of the driving transistor;

a fourth transistor connected between an initialization line and the anode electrode of the light-emitting element and the fourth transistor being directly connected to the anode electrode of the light emitting element; and

a fifth transistor connected between the anode electrode of the light-emitting element and a sensing line.

9 . The display device of claim 8 , further comprising:

a second capacitor connected between the gate electrode of the driving transistor and the anode electrode.

10 . The display device of claim 8 , wherein the fifth transistor always remains turned off.

11 . The display device of claim 8 , further comprising:

a detector or a power supply unit connected to the sensing line.