Patent ID: 6862013
Filing Date: 2005-03-01
Classification: G09G

Abstract:
1. An active-matrix image display device including a plurality of scanning lines, a plurality of signal lines, the signal lines and scanning lines being respectively disposed in directions to mutually intersect, a plurality of pixel switching elements, and a plurality of display pixels disposed in a matrix, each of which is connected via one of the plurality of pixel switching elements to each intersecting point where the lines intersect, the image display device comprising: a plurality of scanning auxiliary lines, each being characterized as allowing smaller signal delay than the scanning lines, wherein each of the scanning auxiliary lines is connected to a portion of a corresponding one of the plurality of scanning lines and arranged so as to branch off from the scanning line it is connected to, the scanning line portion being on a side of the scanning line to which signals are applied, wherein the image display device further comprises at least one arrangement selected from the group consisting: a first arrangement including a plurality of charging switching elements and a selected state scanning driving voltage power source, wherein: each of the charging switching elements includes control terminal and is connected to an edge portion of each of the scanning lines, the edge portion being opposite to the side to which the signals are applied, wherein the control terminal is connected to the scanning auxiliary line of the corresponding scanning line of a stage, and is controlled by a scanning signal to the corresponding scanning line of the same stage so as to turn the respective charging element of the same stage ON/OFF, and the selected state scanning driving voltage power source is operably coupled to the charging switching elements such that when the respective charging element of the same stage is in an ON state, a selected scanning driving voltage is applied to a terminal end of the corresponding scanning line via the edge portion and via the respective charging element of the same stage; and a second arrangement including a plurality of discharging switching elements and a non-selected state scanning driving voltage power source, wherein: each of the discharging switching elements is connected to an edge portion of each of the scanning lines on a side opposite to the side to which signals are applied, and includes a control terminal, wherein the scanning line and scanning auxiliary line of the same stage and the scanning line and scanning auxiliary line of a following stage are arranged so the control terminal of the respective discharge switching element of the same stage is connected to the scanning auxiliary line of the following stage, and so the respective discharge element of the same stage is controlled by a scanning signal to the scanning line of the following stage, and so as to turn the respective discharge switching element of the same stage ON/OFF, the non-selected state scanning driving voltage power source is operably coupled to the plurality of discharge switching elements such that when the respective discharge switching element of the same stage is in an ON state, a non-selected state scanning driving voltage is applied to the termination end of the scanning lines via the edge portion and the respective discharging switching element of the same stage.