Patent ID: 7888683

Claim:
An organic light emitting display comprising: a substrate; a display region on the substrate, the display region comprising a plurality of pixels; and a signal transfer unit on the substrate for transferring lighting test signals to the plurality of pixels, wherein the signal transfer unit comprises a plurality of transistors for transferring the lighting test signals, and a resistor coupled to drains and gates of the plurality of transistors for protecting the plurality of transistors, the plurality of transistors comprising: channel regions on the substrate, the channel regions comprising a semiconductor layer; a first insulating film on the channel regions and the substrate; gate metals on the first insulating film, the gate metals comprising a first metal layer, wherein the gate metals are coupled to an end of the resistor; a second insulating film on the gate metals and the first insulating film; and source-drain metals on the second insulating film, the source-drain metals comprising a second metal layer, wherein the source-drain metals are coupled to the channel regions and coupled to another end of the resistor.