Patent ID: 8786580

Claim:
An image display device comprising: a display panel including a plurality of display regions each having predetermined columns of data lines, predetermined rows of scanning lines, and a plurality of pixel each disposed at an intersection between each of said data lines and each of said scanning lines; a plurality of data line driving circuits each arranged on data line terminal side margins of said display panel to write pixel data, based on a transmitted data signal, to each of said data lines in a corresponding display region, a scanning line driving circuit to output a scanning driving signal for driving each scanning line in a predetermined order based on a given scanning control signal; and a signal processing unit, based on a given video signal, to generate a data signal and to transmit the generated data signal to a corresponding one of said data line driving circuits through a corresponding data signal transmission wiring and to generate said scanning control signal and to transmit the generated scanning control signal to said scanning driving circuit, wherein said processing unit comprises: a polarity inversion notification signal generating unit which compares, for each data line driving circuit, a gray level of said data signal with a gray level of said data signal before being transmitted to a corresponding one of said data line driving circuits, and if an amount of change in gray level is larger than a predetermined value, performs inversion of all polarities of said data signal to transmit to the corresponding one of said data line driving circuits and generates a polarity inversion notification signal showing that a polarity of said data signal has been already inverted to transmit to the corresponding one of said data line driving circuits through a corresponding notification signal transmission wiring; and a polarity inversion notification signal initial polarity setting unit which sets, for each notification signal transmission wiring, an initial polarity of said polarity inversion notification signal to be generated by said polarity inversion notification signal generating unit; and wherein each of said data line driving circuits inverts a polarity of the transmitted data signal based on said polarity inversion notification signal.