Display device

1. A display device comprising:

a support substrate;

a drive circuit provided on the support substrate;

an interlayer insulating film which covers the drive circuit;

organic field light-emitting elements arranged in a display region on the interlayer insulating film; and

a lead-out wiring extended from the organic field light-emitting elements to a peripheral region around the display region, wherein

the interlayer insulating film includes a laminated film made up of an inorganic insulating film and organic insulating film stacked in this order,

the organic insulating film has an isolation trench which surrounds the display region, the isolation trench being devoid of the organic insulating film and having the inorganic insulating film at its bottom, and

the drive circuit and lead-out wiring are insulated from each other by the inorganic insulating film where the lead-out wiring crosses the isolation trench and by the organic insulating film on the sidewalls of the trench.

2. The display device of claim 1 , wherein

a wiring is provided below the isolation trench, the wiring comprising the same layer as for a gate electrode of a bottom gate thin film transistor making up the drive circuit.

3. The display device of claim 2 , wherein

insulating films making up the drive circuit are provided below the inorganic insulating film between the wiring and lead-out wiring.

4. The display device of claim 2 , wherein

at least a semiconductor layer of a thin film transistor making up the pixel circuit or an insulating film, disposed between the semiconductor layer and an electrode connected to the semiconductor layer, is provided below the inorganic insulating film between the wiring and lead-out wiring.

5. The display device of claim 1 , wherein

the drive circuit is formed with a thin film transistor which comprises a semiconductor layer made of amorphous silicon.