Patent ID: 8581946
Filing Date: 2013-11-12
Classification: B41J,G03G,H04N

Abstract:
1. A driving device that drives a plurality of light emitting elements that are connected in parallel to a common terminal, comprising: a scanning circuit, in which a plurality of 3-terminal switching elements are arranged, the plurality of 3-terminal switching elements each including a first terminal connected to a first power source, a second terminal connected to one of a first clock terminal and a second clock terminal, and a control terminal that is connected to the second clock terminal and that controls an ON/OFF state between the first and second terminals, wherein the scanning circuit outputs a signal, which flows to each of the control terminal, to the plurality of light emitting elements by ON/OFF switching of the 3-terminal switching elements based on a first clock signal supplied from the clock terminal, and the scanning circuit sequentially scans and drives the plurality of light emitting elements; a data driving circuit that drives a driving rectangular wave signal and that supplies a data signal to the common terminal; a clock driving circuit that drives a scanning rectangular wave signal and that generates the first clock signal and a second clock signal; a first differential circuit that includes the first clock terminal and that outputs the first clock signal; and a second differential circuit that includes the second clock terminal and that outputs the second clock signal, wherein a differential waveform is formed at an edge of the second clock signal by differentiating the second clock signal using an inductor, the clock driving circuit includes: the output terminal forms an open-drain output.