METHOD OF DRIVING DISPLAY ELEMENT AND ITS DRIVING DEVICE

摘要

PURPOSE: A driving method of a liquid crystal display element and a device for the same are provided to make a multi-stage gradational display almost without modulating frequency components by substantially applying specific signals to column electrodes and making the gradational display. CONSTITUTION: JXL (J and L: integers larger than one) row electrodes are divided into J row electrode subgroups each consisting of L row electrodes. Then when a signal substantially consisting of orthogonal functions is applied to row electrodes and display data of a Jth row electrode subgroup (j: integer varying from 1-J) in a specific column are represented with column vectors Dj (Dj is shown by an equation I and respective elements have values between 1 showing an OFF state and -1 showing an ON state according to gradations) having L elements, the column electrodes are substantially applied with a signal generated by adding two kind of signals shown by an equation II to a signal obtained by converting Dj by the orthogonal functions. Thus, the gradation display based upon the column vectors Dj is made.