2 when gate line g 1 is asserted display units in the first row horizontal direction receive a data signal from source lines s 1 u02dc s 6 when gate line g 2 is asserted display units in the second row horizontal direction receive a data signal from source lines s 1 u02dc s 6 control module 335 comprises switches sw 1 u02dc sw 6 and a processing unit 332 switches sw 1 u02dc sw 6 are divided into first selection units and second selection units and are respectively coupled to source lines s 1 u02dc s 6 processing unit 332 provides a data signal of a first polarity or a data signal of a second polarity to the first or the second selection units in this embodiment processing unit 322 comprises data drivers 3321 3323 and processor 3325 in other embodiments the processing unit only utilizes one controller to control all of the switches since the operations of data drivers 3321 and 3323 are the same data driver 3321 is given as an example data driver 3321 provides data signal d 1 to switches sw 1 u02dc sw 3 since data driver 3321 provides the data signals of the first polarity to source lines s 1 and s 3 through switches sw 1 and sw 3 switches sw 1 and sw 3 are first selection units and source lines s 1 and s 3 are first source lines since data driver 3321 provides the data signals of the second polarity to source line s 2 through switch sw 2 switch.