Patent ID: 7280093
Filing Date: 2007-10-09
Classification: G09G

Abstract:
1. A display device comprising: a display panel comprising a switching element for every pixel electrode; a scanning line driving circuit for driving scanning lines of said display panel; a signal line driving circuit for driving signal lines of said display panel, said signal line driving circuit comprising a plurality of shift registers; a control circuit including a delay circuit operationally connected to the signal line driving circuit; and a video signal processing circuit operationally connected to the control circuit and the signal line driving circuit, wherein the delay circuit produces a phase difference in a second signal with respect to a phase of a first signal which is input to each of said plurality of shift registers, wherein said second signal is input to each of said plurality of shift registers to which said first signal is input, wherein said first signal has a reversed phase relation with said second signal, wherein a length of said phase difference is at least a signal rise time period (tr) of said first signal or a signal fall time period (tf) of said first signal, and shorter than a half of a signal holding time period (tc), and wherein noise due to said first signal and said second signal is reduced by said phase difference.