Patent ID: 7411632

Claim:
A driving circuit for display elements, said driving circuit comprising: a modulation circuit that outputs a modulating signal to be applied to wiring to which display elements are connected; and an output circuit that serializes modulation data including height value data for determining a height value of at least part of a waveform of the modulating signal and pulse width data for determining a pulse width of at least part of a waveform of the modulating signal so that the modulation data can be transmitted to said modulation circuit by a transmission path, the number of which is smaller than the number of bits of the modulation data, and outputs the serialized modulation data, wherein a plurality of the transmission paths are provided, and wherein said output circuit is constructed: (i) in such a way as to output the serialized height value data to predetermined ones of the transmission paths without outputting the serialized pulse width data and to output the serialized pulse width data to other predetermined ones of the transmission paths without outputting the serialized height value data; and (ii) in such a way as to output an arbitrary data bit during time during which any of data bits constructing the height value data and data bits constructing the pulse width data are not transmitted in at least either the predetermined ones of the transmission paths or the other predetermined ones of the transmission paths, wherein the time during which any of the data bits constructing the height value data and the data bits constructing the pulse width data are not transmitted is time caused by mismatch between the number of bits of the height value data for generating one modulating signal and the number of bits of the pulse width data for generating the one modulating signal.