The present invention relates to a heat crucible glue or coating for use in connection with refractory materials and ceramics. In one embodiment, the input shaft is adapted to supply a lubricant to the interior of the transmission. In each of the pixel circuits, the first scanning TFT handling a large amount of current as compare with current flowing through the OLED, and the current-voltage conversion TFT are shared between two pixels. Both circuits produce the same transmitted signal, although in practice the latter is simpler to implement due to its DC operating bias.