Organic light emitting diode display device

1. An organic light emitting diode display device, comprising:

a substrate including:

a display region including a plurality of sub-pixel regions; and

a peripheral region surrounding the display region;

a buffer layer in the display region and peripheral region on the substrate;

a first circuit structure in the peripheral region on the buffer layer;

a sub-pixel structure in each of the sub-pixel regions on the first circuit structure; and

a first signal wire in the peripheral region between the substrate and the buffer layer, wherein the first signal wire overlaps the first circuit structure when viewed from a plan view in a thickness direction of the substrate.

2. The organic light emitting diode display device of claim 1 , further comprising:

a switching transistor disposed in the sub-pixel region on the buffer layer; and

a driving transistor spaced apart from the switching transistor.

3. The organic light emitting diode display device of claim 2 , wherein the switching transistor includes:

a first active layer disposed in the sub-pixel region on the substrate;

a first gate electrode disposed on the first active layer; and

first source and first drain electrodes disposed on the first gate electrode.

4. The organic light emitting diode display device of claim 3 , wherein the driving transistor includes:

a second active layer spaced apart from the first active layer;

a second gate electrode disposed on the second active layer; and

second source and second drain electrodes disposed on the second gate electrode.

5. The organic light emitting diode display device of claim 4 , wherein the first circuit structure includes a gate driver including a first transistor.

6. The organic light emitting diode display device of claim 5 wherein the gate driver provides a gate signal to the first gate electrode of the switching transistor.

7. The organic light emitting diode display device of claim 4 , further comprising:

a second circuit structure spaced apart from the first circuit structure in the peripheral region on the substrate.

8. The organic light emitting diode display device of claim 7 , wherein the second circuit structure includes a light emission driver including a second transistor spaced apart from the first circuit structure.

9. The organic light emitting diode display device of claim 8 , further comprising:

a second signal wire spaced apart from the first signal wire in the peripheral region between the substrate and the buffer layer,

wherein the second signal wire overlaps the second circuit structure when viewed from the plan view in the thickness direction of the substrate.

10. The organic light emitting diode display device of claim 9 , wherein

the first signal wire includes a clock signal wire to which a clock signal is applied,

the first signal wire provides the clock signal to the first and second circuit structures,

the second signal wire includes a driving power supply wire to which a driving power supply is applied, and

the second signal wire provides the driving power supply to the first and second circuit structure.

11. The organic light emitting diode display device of claim 1 , further comprising:

a power supply wire spaced apart from the first circuit structure in the peripheral region on the buffer layer; and

a connection pattern disposed on the power supply wire.

12. The organic light emitting diode display device of claim 11 , wherein the power supply wire is electrically connected to the sub-pixel structure through the connection pattern.

13. The organic light emitting diode display device of claim 11 , further comprising:

a block structure disposed in an outmost portion of the peripheral region on the substrate.

14. The organic light emitting diode display device of claim 13 , wherein the block structure includes:

a first block pattern disposed on the connection pattern and

a second block pattern spaced apart from the first block pattern,

wherein the second block pattern surrounds the first block pattern.

15. The organic light emitting diode display device of claim 14 , wherein the sub-pixel structure includes:

a lower electrode disposed on the substrate;

a light emitting layer disposed on the lower electrode; and

an upper electrode disposed on the light emitting layer,

wherein the upper electrode is electrically connected to the connection pattern.

16. The organic light emitting diode display device of claim 1 , wherein the substrate includes:

a first organic layer;

a first barrier layer disposed on the first organic layer;

a second organic layer disposed on the first barrier layer; and

a second barrier layer disposed on the second organic layer.

17. The organic light emitting diode display device of claim 1 , further comprising:

a thin film encapsulation structure disposed on the sub-pixel structure,

wherein the thin film encapsulation structure includes:

a first thin film encapsulation layer including an inorganic material having flexibility;

a second thin film encapsulation layer disposed on the first thin film encapsulation layer, wherein the second thin film encapsulation layer includes an organic material having flexibility; and

a third thin film encapsulation layer disposed on the second thin film encapsulation layer, wherein the third thin film encapsulation layer includes an inorganic material having flexibility.