An elongated drive string assembly includes a plurality of hollow sucker rods and connecting elements between a drive head located at the surface of an oil well and a rotary pump located deep down in an oil well, with a series of holes at each end to substantially increase the flow of extracted fluid. At least one layer of the multilayer transfer gate electrode is made of at least two impurity doped amorphous silicon films of different impurity concentration. The self-biasing assists in reducing current consumption. Frame rates are adapted by inter-frame interpolation or by traditional schemes, including \u201c3:2 pull-down\u201d for 24-to-30 fps conversions.