An array substrate of a LCD display, comprising: a plurality of pixel units, wherein each pixel unit includes a plurality of subpixels configured to display different colors, and at least one subpixel in every pixel unit includes at least a first sub-subpixel and a second sub-subpixel of the same color that are located adjacently, a plurality of scanning signal lines configured to input scanning signals to the subpixels, a plurality of data signal lines that form a plurality of data signal line sets, a data signal line set includes a plurality of data signal line subsets configured to input data signals to the subpixels, and a data signal line subset include at least a first data signal line (Sm+1) and a second data signal line (Sm) in case that each of the subpixels connected to said data signal line subset comprises at least a first and a second sub-subpixels, wherein, when the data signal line subset comprises at least a first data signal line (Sm+1) and a second data signal line(Sm), each first sub-subpixel is connected to a first data signal line (Sm+1), the first data signal line (Sm+1) being configured to input a first data signal to the first sub-subpixels, and each second sub-subpixel is connected to the second data signal line (Sm), the second data signal line (Sm) being configured to input a second data signal to the second sub-subpixels, and characterized in that: if the voltage delivered by the first data signal to the first sub-subpixel of a subpixel unit is aV, the voltage delivered by the second data signal to the second sub-subpixel of a subpixel unit is in the voltage interval of [0.7 a V, a V) ∪ ( a V, 1,3 a V], α being a positive number and common voltage delivered by the common electrodes to the first sub-subpixel and second sub-subpixel is the same, wherein a width of the first data signal line is proportional to a range of magnitude of the voltage of the first data signal, and a width of the second data signal line is proportional to the range of magnitude of the voltage of the second data signal. a plurality of pixel units, wherein each pixel unit includes a plurality of subpixels configured to display different colors, and at least one subpixel in every pixel unit includes at least a first sub-subpixel and a second sub-subpixel of the same color that are located adjacently, a plurality of scanning signal lines configured to input scanning signals to the subpixels, a plurality of data signal lines that form a plurality of data signal line sets, a data signal line set includes a plurality of data signal line subsets configured to input data signals to the subpixels, and a data signal line subset include at least a first data signal line (Sm+1) and a second data signal line (Sm) in case that each of the subpixels connected to said data signal line subset comprises at least a first and a second sub-subpixels, wherein, when the data signal line subset comprises at least a first data signal line (Sm+1) and a second data signal line(Sm), each first sub-subpixel is connected to a first data signal line (Sm+1), the first data signal line (Sm+1) being configured to input a first data signal to the first sub-subpixels, and each second sub-subpixel is connected to the second data signal line (Sm), the second data signal line (Sm) being configured to input a second data signal to the second sub-subpixels, and characterized in that: if the voltage delivered by the first data signal to the first sub-subpixel of a subpixel unit is aV, the voltage delivered by the second data signal to the second sub-subpixel of a subpixel unit is in the voltage interval of [0.7 a V, a V) ∪ ( a V, 1,3 a V], α being a positive number and common voltage delivered by the common electrodes to the first sub-subpixel and second sub-subpixel is the same, wherein a width of the first data signal line is proportional to a range of magnitude of the voltage of the first data signal, and a width of the second data signal line is proportional to the range of magnitude of the voltage of the second data signal. if the voltage delivered by the first data signal to the first sub-subpixel of a subpixel unit is aV, the voltage delivered by the second data signal to the second sub-subpixel of a subpixel unit is in the voltage interval of [0.7 a V, a V) ∪ ( a V, 1,3 a V], α being a positive number and common voltage delivered by the common electrodes to the first sub-subpixel and second sub-subpixel is the same, wherein a width of the first data signal line is proportional to a range of magnitude of the voltage of the first data signal, and a width of the second data signal line is proportional to the range of magnitude of the voltage of the second data signal.