High resolution flat panel display apparatus

PURPOSE: A high resolution flat panel display apparatus is provided to be capable of broadly controlling the horizontal adjustment of images by having a fine adjustment function and a general adjustment function. CONSTITUTION: An ADC(Analog-to-Digital Converter) block(220) converters analog video signals input from a host into digital video signals, which are stored in a memory block(230). A multiplexor(240) outputs digital video signals selected in accordance with a select signal output from an interface controller(270) to an LCD driver(320). The interface controller(270) comprises a horizontal position control part(272) and controls overall operation of an LCD interface unit(200). A micro controller(260) generates a horizontal position adjust signal corresponding to a key input signal. A horizontal position control part(272) receives the horizontal position adjust signal, adjusts the sampling point of the ADC block and controls the write operation of the memory block.