An organic light emitting diode display and a manufacturing method thereof, and more particularly, an organic light emitting diode display having improved light extraction efficiency by forming both a first electrode and a second electrode as reflective electrodes to guide generated light to the side of a pixel, and a manufacturing method thereof. Prior to presenting the electronic advertisements to the user, the electronic advertisement is filtered into classifications based upon whether the electronic advertisement is from a commercial vendor from whom the user has indicated that he or she wishes to accept commercial electronic advertisements. The system may include improved communication, self-diagnostics, and surgical insertion tools. Further, a difference distribution between an actually measured power distribution, which indicates an actual power distribution, and a calculation power distribution is obtained. The signal conditioning circuit attenuates and equalizes the in-home entertainment signals when coupled to the coaxial device.