Electro-optical device, method of driving the same, data line driving circuit, signal processing circuit, and electronic apparatus

Abstract

A signal processing unit that generates data signals for controlling gray-scale levels of electro-optical elements includes a first D/A conversion unit that generates gray-scale signals from gray-scale data for designating the gray-scale levels of the electro-optical elements; a storage unit that stores correction data indicating correction values with respect to the gray-scale signals; a second D/A conversion unit that has resolution different from that of the first D/A conversion unit, and that generates correction signals from the correction data stored in the storage unit; and a synthesizing unit that synthesizes the gray-scale signals generated by the first D/A conversion unit with the correction signals generated by the second D/A conversion unit to generate the data signals.

1 . A data line driving circuit of an electro-optical device in which a plurality of electro-optical elements are respectively provided corresponding to intersections of a plurality of scanning lines and a plurality of data lines, comprising:
 a plurality of signal processing circuits each of which supplies data signals to the data lines,   wherein each signal processing circuit includes:   a first D/A conversion unit that generates current signals, as gray-scale signals, in accordance with gray-scale data for designating gray-scale levels of the electro-optical elements;   a storage unit that stores correction data indicating correction values with respect to the gray-scale signals;   a second D/A conversion unit that has resolution different from that of the first D/A conversion unit, and that generates current signals, as correction signals, in accordance with the correction data stored in the storage unit; and   a synthesizing unit that synthesizes the gray-scale signals generated by the first D/A conversion unit with the correction signals generated by the second D/A conversion unit to generate the data signals.   
   
   
       2 . A data line driving circuit of an electro-optical device in which a plurality of electro-optical elements are respectively provided corresponding to intersections of a plurality of scanning lines and a plurality of data lines, comprising:
 a plurality of signal processing circuits each of which supplies data signals to the data lines,   wherein each signal processing circuit includes:   a first D/A conversion unit that generates voltage signals, as gray-scale signals, in accordance with gray-scale data for designating gray-scale levels of the electro-optical elements;   a storage unit that stores correction data indicating correction values with respect to the gray-scale signals;   a second D/A conversion unit that has resolution different from that of the first D/A conversion unit, and that generates voltage signals, as correction signals, in accordance with the correction data stored in the storage unit; and   a synthesizing unit that synthesizes the gray-scale signals generated by the first D/A conversion unit with the correction signals generated by the second D/A conversion unit to generate the data signals.   
   
   
       3 . A data line driving circuit of an electro-optical device in which a plurality of electro-optical elements are respectively provided corresponding to intersections of a plurality of scanning lines and a plurality of data lines, comprising:
 a plurality of signal processing circuits each of which supplies data signals to the data lines,   wherein each signal processing circuit generates data signals for controlling gray-scale levels of the electro-optical elements, and each signal processing circuit includes:   a first D/A conversion unit that generates voltage signals, as gray-scale signals, in accordance with gray-scale data for designating gray-scale levels of the electro-optical elements;   a storage unit that stores correction data indicating correction values with respect to the gray-scale signals;   a second D/A conversion unit that has resolution different from that of the first D/A conversion unit, and that generates correction signals that have pulse width in accordance with the correction data stored in the storage unit; and   a synthesizing unit that outputs the gray-scale signals generated by the first D/A conversion unit as data signals during a period in accordance with the pulse width of the correction signals.   
   
   
       4 . An electro-optical device comprising:
 a plurality of scanning lines;   a plurality of data lines;   a plurality of electro-optical elements that are respectively provided corresponding to intersections of the scanning lines and the data lines;   a scanning line driving circuit that sequentially selects the plurality of scanning lines; and   a data line driving circuit according to  claim 1 .   
   
   
       5 . An electronic apparatus comprising the electro-optical device according to  claim 4 .