Organic EL display device
An organic EL display device includes: a lower electrode; an upper electrode; a first organic layer which is disposed between the lower electrode and the upper electrode and is formed of a plurality of layers including a light emitting layer formed of an organic material that emits light; a metal wire that extends between the pixels within the display region; and a second organic layer which is formed of a plurality of layers the same as that of the first organic layer and which comes into contact with a part of the metal wire and does not come into contact with the first organic layer. The upper electrode comes into contact with the metal wire in the periphery of the second organic layer. Accordingly, it is possible to uniformize the potential of the upper electrode without reducing the light emission area.
1. An organic EL display device comprising:
a first lower electrode in a display region;
a second lower electrode in the display region;
an upper electrode covering the display region;
a wire running between the first lower electrode and the second lower electrode;
a flattening film formed of an organic material covering a circuit which is formed on a substrate and includes the wire and a thin film transistor;
a contact hole on the wire;
an insulating bank covering an end portion of the first lower electrode and an end portion of the second lower electrode, the insulating bank is formed on the flattening film among the lower electrode, the first organic layer, and the upper electrode;
a first organic layer between the upper electrode and the first lower electrode, or between the upper electrode and the second lower electrode, the first organic layer includes at least one layer of an electron injection layer, a hole transport layer and a light emitting layer; and
a second organic layer between the upper electrode and the wire, the second organic layer includes the same layer as the at least one layer which are included in the first organic layer, wherein
the insulating bank isolates each of the first lower electrode and the second lower electrode,
the upper electrode is in contact with the wire through the contact hole opened in the flattening film and the insulating bank,
the first organic layer and the second organic layer are not in contact with each other,
the second organic layer is in contact with a part of the wire in the contact hole, and
the upper electrode is in contact with the other part of the wire in the contact hole.
2. The organic EL display device according to claim 1 , wherein
the upper electrode continuously is in contact with the wire within the display region along the wire.
3. The organic EL display device according to claim 1 , wherein
the wire runs along a plurality of sides of the first lower electrode and the second lower electrode.
4. The organic EL display device according to claim 3 , wherein
the contact hole is formed along a plurality of sides of the first lower electrode and the second lower electrode.
5. The organic EL display device according to claim 3 , wherein
the wire vertically and horizontally runs so as to surround each of the first lower electrode and the second lower electrode.
6. The organic EL display device according to claim 5 , wherein
the contact hole is formed vertically and horizontally so as to surround each of the first lower electrode and the second lower electrode.