1. Field
The invention relates to a display device, such as an organic light emitting diode (OLED) display device, and a manufacturing method thereof.
2. Description of the Related Art
A device, such as an organic light emitting diode (OLED) display, may include two electrodes and an organic emission layer disposed between the two electrodes. In operation, electrons injected from one electrode and holes injected from the other electrode are combined in the organic emission layer, such that excitons are formed, and light is emitted using energy associated with the excitons.
Typically, in manufacturing a display device, a plurality of thin films and wires are formed, and an OS (open and/or short) test for confirming whether any unintended open circuit and/or any unintended short circuit exists in one or more wire sets of the wires is performed. In an OS test, one end of a wire set is connected to a shorting bar, an OS test pad is formed at the other end of the wire, a probe pin is contacted with the shorting bar and the OS test pad, and an electric signal is applied to test whether an unintended open or an unintended short exists in the wire set. If a difference between a measured resistance (obtained in the OS test) and a predetermined resistance standard is insufficient, detection of a short between the adjacent wires may be substantially difficult.
The above information disclosed in this Background section is for enhancement of understanding of the background of the invention. The Background section may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.