METHOD OF GENERATING A COMMON VOLTAGE FOR DISPLAY PANEL DRIVE, A DISPLAY PANEL DRIVING APPARATUS AND A DISPLAY DEVICE HAVING THE DISPLAY PANEL DRIVING APPARATUS, CAPABLE OF IMPROVING IMAGE QUALITY

摘要

PURPOSE: A method of generating a common voltage for display panel drive, a display panel driving apparatus and a display device having the display panel driving apparatus are provided to prevent an afterimage in displaying the same image by controlling the level of a common voltage of the display panel.;CONSTITUTION: A common voltage decision circuit decides whether the same image data is received or not. The common voltage decision circuit decides the level of the common voltage. A voltage generation unit(400) generates a common voltage. The voltage generation unit applies a common voltage to a display panel. The common voltage decision circuit comprises a buffer memory(250), a graphic memory(230), and a main control unit(210).;COPYRIGHT KIPO 2011