A pixel is provided in which normal display of an image is possible even if a sustain period is shorter than an address period in a driving method combining digital gray scales and time gray scales, and in which operation can be compensated by changing the electric potential of a signal line even for a case in which the EL driver transistor becomes normally on due to deterioration. Accordingly, the length of the assembled contactor is totally surrounded by conductive material, thereby providing shielding element. Two mill members are respectively connected to the connection members. 5-50 bar and the residence time within the mixing zone is less than the autoignition delay for the mixed stream. The cathode terminal end surface is also provided with a cathode terminal dent surface which is plated. The timing signal travels with the input analog signal so that it continues to accurately define predetermined sample times in the analog signal even as they travel over different path lengths to individual converters.