Patent ID: 7230614
Filing Date: 2007-06-12
Classification: G09G

Abstract:
1. A circuit for driving a display comprising: a light emitting display of a current driven type having a plurality of column electrode lines arranged in a column direction, a plurality of row electrode lines arranged perpendicular to the column electrode lines, and a matrix of pixels at crossing points of the column electrode lines and the row electrode lines; a power source part; a column driving circuit connected to the column electrode lines formed in the column direction for supplying/discharging a current to/from the column electrode lines, for driving a light emitting element of the light emitting display of current driven type; and an electric transformer for, when the current supplied to the column electrode lines is discharged, recovering the current discharged from the column electrode lines and re-supplying a recovered current to the power source part, wherein the column driving circuit includes a data sink part having a first end coupled to an anode line of the light emitting element and a second end coupled to ground through the electric transformer such that a trapped charge at the anode line of the light emitting element is transferred to the electric transformer.