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 plurality of power source lines which supply electricity to a plurality of pixels arranged in a matrix array;
a power source bus line surrounding having a lower power source bus line, an upper power source bus line, a right power source bus line, and a left power source bus line, the lower power source bus line being connected to the plurality of power source lines and having a first end and a second end; and
a power source part which supplies electricity to the first and second ends of the lower power source bus line respectively along opposite sides of a data line drive circuit, wherein
each of the pixels is connected to a corresponding scanning line, a corresponding data line, and a corresponding power source line of the plurality of power source lines, the corresponding scanning line for each pixel is provided with a scanning signal from a scanning line drive circuit, and the corresponding data line for each pixel is provided with a data signal from the data line drive circuit,
the lower power source bus line is arranged between a display region and the data line drive circuit, and
the power source bus line surrounds the display region.
2. An organic EL display device according to claim 1 , wherein the power source bus line is provided to each of two opposing ends of each power source line and a plurality of portions of the power source line.
3. An organic EL display device according to claim 1 , wherein the upper power source bus line supplies electricity to the power source lines and is arranged on an opposite side of the lower power source bus line from the power source lines and connected to the lower power source bus line, a first end of the power source lines is connected to the lower power source bus line, and a second end of the power source lines is connected to the upper power source bus line.
4. An organic EL display device according to claim 1 , wherein the power source part is arranged on a first side of the data line drive circuit that is opposite to a second side of the data line drive circuit that faces the display region.