Patent ID: 7724312

Claim:
A driving circuit for display elements, the 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 (a) converts inputted modulation data in parallel data format, including (i) height value data for determining a height value of at least part of a waveform of the modulating signal and (ii) pulse width data for determining a pulse width of at least part of a waveform of the modulating signal into data in serial data format, in order to allow transmission of the inputted modulation data through at least one transmission path, the number of which is smaller than the number of bits of the inputted modulation data, and (b) outputs the converted data in serial data format to the modulation circuit through the at least one transmission path. wherein the modulation circuit comprises a shift register that converts the converted data in serial data format into the height value data and pulse width data in parallel data format, and wherein the modulation circuit generates the modulating signal from the height value data and pulse width data in parallel data format.