Disclosed is an image misconvergence correction apparatus having a
correction value generation unit for calculating a convergence correction
value to correct misconvergence occurring when a video signal is scanned
on a display device; an amplification unit for performing D-class
amplification with respect to the convergence correction value; a
convergence yoke mounted in the display device to control a path of
electron beams corresponding to the video signal based on the convergence
correction value amplified in the amplification unit; and a feedback
sensing unit for differentially amplifying a voltage value for electric
current passing through the convergence yoke, and feeding back the
differentially amplified voltage value to the correction value generation
unit. The misconvergence correction apparatus amplifies and outputs a
convergence correction value through the D-class amplifier having
excellent power consumption and heat generation characteristics,
calculates the convergence correction value, and minimizes influence of
switching noise outputted from the D-class amplifier.