Provided are an organic EL device material that reduce the driving voltage of an organic EL device and increase the lifetime of the device as compared with a conventional organic EL device material. The gimbal includes a strut having a buss and a projection that is coupled to the buss. The semiconductor device may include an interconnection quilt having a plurality of metal layers disposed to interconnect the plurality of circuit elements. The second signal rises from the third voltage to a fourth voltage, and then gradually rises from the fourth voltage to a fifth voltage with a third slope. According to the invention, it is provided that the contact zone is arranged at least partially at a lateral distance from the edges of the conductor track in the region of the testing zone.