Organic light emitting display device
An organic light emitting display device is disclosed, which removes an inorganic film from a bending area and minimizes a crack of a routing line to enable an extreme bending. The organic light emitting display device comprises a substrate having a display area and a bending area; a display assembly provided on a display area of the substrate; a routing line arranged on the bending area of the substrate and connected to the display assembly; and an organic layer provided on the bending area of the substrate, covering the routing line, wherein the bending area of the substrate has only the routing line and the organic layer.
1. An organic light emitting display device comprising:
a substrate having a display area and a bending area;
a display assembly located on a display area of the substrate;
a routing line positioned on the bending area of the substrate and connected to the display assembly; and
an organic layer positioned on the bending area of the substrate, covering the routing line,
wherein the only structures on the bending area of the substrate are the routing line and the organic layer,
wherein the organic layer includes:
a second planarization layer covering the routing line;
a second bank layer positioned on the second planarization layer; and
a micro-coating layer positioned on the second bank layer, the micro-coating layer covering an entire surface of the substrate formed in the bending area.
2. The organic light emitting display device of claim 1 , wherein the display assembly includes:
a buffer layer positioned on the substrate;
a thin film transistor positioned on the buffer layer, the thin film transistor controlling a data current to a light emitting layer;
a first planarization layer covering the thin film transistor;
a first bank layer positioned on the first planarization layer, the first bank layer defining a light emitting area;
the light emitting layer located in the light emitting area on the first planarization layer and connected to the thin film transistor; and
an encapsulation layer covering the light emitting layer.
3. The organic light emitting display device of claim 2 , further comprising:
a first spacer positioned on the first bank layer, spacing a mask apart from the substrate during a deposition process.
4. The organic light emitting display device of claim 2 , wherein the organic layer further includes a second spacer positioned on the second bank layer and the micro-coating layer covers the second spacer.
5. The organic light emitting display device of claim 1 , wherein the substrate thickness in the bending area is thinner than the substrate thickness in the display area.
6. The organic light emitting display device of claim 1 , further comprising a concave part located in the bending area and concavely formed from the substrate, wherein the routing line is directly in contact with a bottom surface of the concave part.
7. The organic light emitting display device of claim 1 , further comprising a concave part located in the bending area and concavely formed from the substrate; and a lower film formed between the bottom surface of the concave part and the routing line, wherein the lower film is made of an organic material.
8. The organic light emitting display device of claim 1 , wherein the bending area has a neutral plane located in the routing line.
9. The organic light emitting display device of claim 8 , wherein the routing line includes:
a first metal layer on the substrate;
a second metal layer on the first metal layer; and
a third metal layer on the second metal layer,
wherein the neutral plane of the bending area is located in the second metal layer.