Organic electroluminescent display device
View Patent ↗The present invention overcomes image defects such as the brightness inclination or smears by reducing the line resistance of a power source bus line which supplies electricity to organic EL elements. A plurality of pixels which are arranged in a matrix array is connected to power source lines, and the plurality of power source lines are connected to a power source bus line. Both ends of the power source bus line are connected to a power source part via a FPC. By supplying electricity to both ends of the power source bus line from the power source part, the line resistance of the power source bus line can be reduced.
1. An organic EL display device comprising:
a substrate having a display region;
a flexible printed circuit connected to the substrate; and
a drive circuit disposed on the substrate, wherein:
the display region includes a plurality of pixels arranged in a matrix array, power source lines connected to the plurality of pixels, and data lines supplying data signals to the plurality of pixels,
a power source bus line extends along a side of the display region and is connected to the power source lines,
the power source bus line is arranged between the display region and the drive circuit,
electric power is supplied from a power source part via the flexible printed circuit to a plurality of portions of the power source bus line, and
a cathode contact is connected to cathodes of the plurality of pixels, and cathode electrons are supplied from between an edge of the substrate and the power source bus line via the cathode contact.
2. An organic EL display device according to claim 1 , wherein
the cathode contact is arranged opposite the power source bus line from the display region.
3. An organic EL display device according to claim 1 , wherein
the cathode contact is arranged between the power source bus line and the drive circuit.
4. An organic EL display device according to claim 1 , wherein
the cathode electrons are supplied to the cathode contact via the flexible printed circuit.