A TFT-LCD array substrate, on which a plurality of pixel units are formed by intersecting scan lines and data lines, and each of the pixel units includes: a thin film transistor switch, a pixel electrode, and a transparent common electrode; and a first storage capacitor, which is formed by the transparent common electrode, the pixel electrode and a first insulating layer disposed between the transparent common electrode and the pixel electrode; and the pixel unit further includes: a second storage capacitor, which is formed by a first conductive layer, a second conductive layer, and a second insulating layer disposed between the first conductive layer and the second conductive layer, wherein the pixel electrode, and the transparent common electrode are embodied, so that a parallel electric field is formed between the pixel electrode and the transparent common electrode; wherein transparent common electrodes of the plurality of pixel units are connected together and are connected with a potential provided by a drive circuit; wherein the first conductive layer and the second conductive layer are respectively electrically connected, inside the pixel unit, to the potential of the transparent common electrode and that of the pixel electrode; and the second conductive layer is disposed within the range of the pixel unit unit and does not extend across the entire pixel unit characterized in that the pixel electrode is located above the common electrode and the first conductive layer is disposed within the range of the pixel unit and does not extend across the entire pixel unit. a thin film transistor switch, a pixel electrode, and a transparent common electrode; and a first storage capacitor, which is formed by the transparent common electrode, the pixel electrode and a first insulating layer disposed between the transparent common electrode and the pixel electrode; and the pixel unit further includes: a second storage capacitor, which is formed by a first conductive layer, a second conductive layer, and a second insulating layer disposed between the first conductive layer and the second conductive layer, wherein the pixel electrode, and the transparent common electrode are embodied, so that a parallel electric field is formed between the pixel electrode and the transparent common electrode; wherein transparent common electrodes of the plurality of pixel units are connected together and are connected with a potential provided by a drive circuit; wherein the first conductive layer and the second conductive layer are respectively electrically connected, inside the pixel unit, to the potential of the transparent common electrode and that of the pixel electrode; and the second conductive layer is disposed within the range of the pixel unit unit and does not extend across the entire pixel unit characterized in that the pixel electrode is located above the common electrode and the first conductive layer is disposed within the range of the pixel unit and does not extend across the entire pixel unit. a second storage capacitor, which is formed by a first conductive layer, a second conductive layer, and a second insulating layer disposed between the first conductive layer and the second conductive layer, wherein the pixel electrode, and the transparent common electrode are embodied, so that a parallel electric field is formed between the pixel electrode and the transparent common electrode; wherein transparent common electrodes of the plurality of pixel units are connected together and are connected with a potential provided by a drive circuit;