DISPLAY PANEL DRIVING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a display panel driving device capable of detecting a defect in a data bus line even when an amount of change of gradation voltage is slight for an amount of change of gradation setting. SOLUTION: This display panel driving device is constituted by providing a selector circuit between a holding circuit and a conversion circuit to substitute a value of low-order bit for a value of high-order bit in accordance with a test signal to be inputted into the selector circuit. COPYRIGHT: (C)2009,JPO&INPIT