Patent ID: 7701419
Filing Date: 2010-04-20
Classification: G09G

Abstract:
1. A display device, comprising: first electrodes classified into a plurality of groups; second electrodes respectively provided so as to cross said first electrodes; a display panel having a plurality of capacitive light emitting elements respectively provided at intersections of said first electrodes and said second electrodes; a drive circuit that applies a data pulse for light-emitting a selected capacitive light emitting element to the first electrodes in said plurality of groups such that phase differences respectively occur between said plurality of groups; a number-of-times detector; and a converter, said drive circuit comprising: a controller, said converter converting, in order to divide one field into a plurality of sub-fields and discharge said capacitive light emitting element selected for each of the sub-fields to perform gray scale expression, image data corresponding to the one field into image data corresponding to the sub-field, said number-of-times detector detecting one of a number of times of rise and a number of times of fall of the data pulse applied to said first electrodes for each of the sub-fields on the basis of the image data fed from said converter, and said controller calculating a ratio of said number of times obtained by said number-of-times detector to one of a maximum number of times the data pulse can rise and a maximum number of times the data pulse can fall in each of the sub-fields, lowering, when said ratio is more than a predetermined ratio value, the potential at said first node to a predetermined voltage value, and then controlling an operation of said application circuit such that said first node is grounded.