Liquid crystal display apparatus capable of displaying a complete

Abstract

A liquid crystal display apparatus includes first and second PLL circuits, a memory, and a liquid crystal panel. Dot data or line data of a video signal is written into the memory in response to a write clock signal from the first PLL circuit. Data are read from the memory in response to a read clock signal from the second PLL circuit. A read reset signal for reading dummy data is also supplied from the second PLL circuit to the memory. If the number of dot data the video signal has in one horizontal period is smaller than the number of horizontally arranged pixels of the liquid crystal panel, dummy data is read in response to the read reset signal after all the dot data in that one horizontal period have been read. On the other hand, if the number of line data in one vertical period is smaller than the number of vertically arranged pixels of the liquid crystal panel, dummy data is read in response to the read reset signal after all the line data in that one vertical period have been read. As a result, an optimal picture can be displayed on the liquid crystal panel.