Display device
A display device includes a scan line extending in a first direction, a data line and a driving voltage line extending in a second direction crossing the first direction, a switching thin film transistor (“TFT”) connected to the scan line and the data line, a driving TFT connected to the switching TFT and including a driving semiconductor layer and a driving gate electrode, a storage capacitor connected to the driving TFT and including first and second storage capacitor plates, a node connection line between the data line and the driving voltage line and connected to the driving gate electrode, and a shielding portion between the data line and the node connection line.
1. A display device comprising:
a first scan line extending in a first direction;
a data line and a driving voltage line each extending in a second direction crossing the first direction;
a switching thin film transistor connected to the first scan line and the data line;
a driving thin film transistor connected to the switching thin film transistor and comprising:
a driving semiconductor layer; and
a driving gate electrode;
a storage capacitor connected to the driving thin film transistor and comprising first and second storage capacitor plates;
a node connection line connected to the driving gate electrode and arranged between the data line and the driving voltage line; and
a shielding portion arranged between the data line and the node connection line.
2. The display device of claim 1 , further comprising a compensation thin film transistor comprising a compensation semiconductor layer and a compensation gate electrode, wherein the compensation thin film transistor turns on in response to a scan signal of the first scan line and diode-connects the driving thin film transistor.
3. The display device of claim 2 , wherein one side of the node connection line is connected to the compensation semiconductor layer.
4. The display device of claim 2 , wherein the driving voltage line covers at least a portion of the compensation thin film transistor.
5. The display device of claim 1 , wherein the shielding portion extends in the second direction.
6. The display device of claim 1 , further comprising an initialization voltage line which provides an initialization voltage, wherein the shielding portion is electrically connected to the initialization voltage line.
7. The display device of claim 1 , wherein the shielding portion comprises at least one of a shielding semiconductor layer comprising a same material as that of the driving semiconductor layer, and a metallic shielding layer comprising a metallic material.
8. The display device of claim 7 , further comprising a second scan line extending in the first direction and crossing the shielding portion.
9. The display device of claim 8 , wherein the shielding semiconductor layer comprising a first shielding region and a second shielding region spaced apart from each other in the second direction with the second scan line therebetween.
10. The display device of claim 9 , wherein the first shielding region is electrically connected to the second shielding region by a conductive layer.
11. The display device of claim 10 , wherein the conductive layer is the metallic shielding layer.
12. The display device of claim 7 , wherein the shielding semiconductor layer comprises polycrystalline silicon.
13. The display device of claim 7 , wherein the metallic shielding layer comprises a same material as that of at least one of the data line, the node connection line, and the second storage capacitor plate.
14. The display device of claim 1 , wherein the driving gate electrode and the first storage capacitor plate comprise a same material with each other.
15. The display device of claim 1 , further comprising an organic light-emitting diode electrically connected to the driving thin film transistor.