Patent ID: 6760004
Filing Date: 2004-07-06
Classification: G09G,H01L

Abstract:
A display device comprising:a plurality of signal lines, and a signal line driving circuit, said signal line driving circuit comprising: a digital signal sampling circuit which samples an inputted digital signal over one line period; a storage circuit which stores therein the sampled digital signals for one line period; a time setting circuit which converts the stored digital signals into pulses of corresponding durations; and a constant current circuit which outputs currents of constant value to the signal lines for the durations of the pulses, wherein said constant current circuit comprises a plurality of counter signal lines, a plurality of ex.or circuits connected to the plurality of counter signal lines, a first nor circuit connected to the plurality of ex.or circuits, a second nor circuit connected to the first nor circuit, a third nor circuit connected to the second nor circuit and an initial input line.