1. A thin film transistor liquid crystal display (TFT-LCD) assembly substrate, comprising: an array structure layer, comprising: a plurality of first signal lines; and a plurality of second signal lines, wherein adjacent first signal lines and adjacent second signal lines cross each other to define a plurality of combination pixel regions, and each of the combination pixel regions comprises two pixel regions juxtaposed along a direction of the first signal line, there are a thin film transistor and a pixel electrode that is connected to the thin film transistor formed in one pixel region of the two pixel regions and there is a common electrode formed in the other pixel region, and the pixel electrode formed in the one pixel region and the common electrode in the other pixel region are separated from each other by a gap in the plane of the assembly substrate and configured to work separately from each other.