Patent ID: 8098225
Filing Date: 2012-01-17
Classification: G09G

Abstract:
1. A display device driving circuit, comprising: a write circuit, including first switches respectively corresponding to a plurality of signal supply lines provided in a display device, which writes a write signal in each of the signal supply lines when a first switch corresponding to the signal supply line is conductive; a shift register, including a plurality of pulse generating means for generating timing pulses for causing the first switches to be conductive, which sequentially outputs the timing pulses to the signal supply lines, respectively; a precharge circuit, including second switches respectively corresponding to the signal supply lines, which precharges each of the signal supply lines when a second switch corresponding to the signal supply line is conductive, each of the pulse generating means receiving a timing pulse outputted from previous pulse generating means in a period between (i) a point of time where the timing pulse is changed to an active level at which a first switch corresponding to the previous pulse generating means is made conductive and (ii) a point of time where said each of the pulse generating means outputs a timing pulse that is at an active level, said each of the timing pulse generating means outputting a precharge pulse for causing a second switch to be conductive, which second switch corresponds to a signal supply line in which the write signal is to be written in accordance with the timing pulse outputted by said each of the timing pulse generating means, and for thereby causing the signal supply line to be precharged; overlap preventing means respectively corresponding to output lines via which the timing pulses are outputted, wherein delay means for delaying a precharge pulse outputted from said each of the pulse generating means, and for outputting the precharge pulse to a second switch and overlap preventing means each corresponding to said each of the pulse generating means, wherein