Organic light emitting diode display
An organic light emitting diode display includes: a substrate; a gate line on the substrate; a data line crossing the gate line; a driving voltage line extending parallel with at least one of the gate line and the data line; a first thin film transistor coupled to the gate line and the data line and comprising a first semiconductor layer; a second thin film transistor coupled to the first thin film transistor and the driving voltage line and comprising a second semiconductor layer; and an organic light emitting element coupled to the second thin film transistor, wherein at least one of the gate line, the data line, and the driving voltage line comprise a plurality of layers, and the lowest layer of the plurality of layers comprises a first metal layer made of a reflective metal.
1. An organic light emitting diode display, comprising:
a substrate;
a gate line on the substrate;
a data line crossing the gate line;
a driving voltage line extending parallel with at least one of the gate line and the data line;
a first thin film transistor coupled to the gate line and the data line and comprising a first semiconductor layer;
a second thin film transistor coupled to the first thin film transistor and the driving voltage line and comprising a second semiconductor layer;
an organic light emitting element coupled to the second thin film transistor,
wherein at least one of the gate line, the data line, and the driving voltage line comprise a plurality of layers, and
a lowest layer of the plurality of layers comprises a first metal layer made of a reflective metal; and
a transparent metal layer below the first metal layer.
2. The organic light emitting diode display of claim 1 , wherein the plurality of layers further comprises a second metal layer formed on the first metal layer.
3. The organic light emitting diode display of claim 2 , wherein the first metal layer comprises at least one of aluminum (Al), silver (Ag), or copper (Cu).
4. The organic light emitting diode display of claim 2 , wherein the second metal layer comprises at least one of molybdenum (Mo) or titanium (Ti).
5. The organic light emitting diode display of claim 2 , wherein the first and second metal layers of the plurality of layers are arranged in an alternating order.
6. The organic light emitting diode display of claim 1 , wherein the transparent metal layer comprises at least one of indium tin oxide (ITO) or indium zinc oxide (IZO).
7. The organic light emitting diode display of claim 1 , further comprising a light reflection pattern on the substrate in a region that does not overlap with the gate line, the data line, and the driving voltage line.
8. The organic light emitting diode display of claim 7 , wherein the light reflection pattern is formed on a same layer as at least one of the gate line, the data line, and the driving voltage line.
9. The organic light emitting diode display of claim 7 , wherein the light reflection pattern comprises:
a third metal layer made of a reflective metal; and
a fourth metal layer on the third metal layer.
10. The organic light emitting diode display of claim 9 , wherein the third metal layer comprises at least one of aluminum (Al), silver (Ag), or copper (Cu).
11. The organic light emitting diode display of claim 9 , wherein the fourth metal layer comprises at least one of molybdenum (Mo) or titanium (Ti).
12. The organic light emitting diode display of claim 9 , wherein the third and fourth metal layers of the light reflection pattern are arranged in an alternating order.
13. The organic light emitting diode display of claim 7 , further comprising a transparent metal layer below the light reflection pattern.
14. The organic light emitting diode display of claim 13 , wherein the light reflection pattern comprises at least one of indium tin oxide (ITO) or indium zinc oxide (IZO).