A matrix-type display device has a matrix display panel, a frame memory,
and a graphics memory. Input image data are temporarily buffered in the
graphics memory, then transferred to the frame memory and read out to
drive the matrix display panel. Readout from the frame memory is cyclic,
and is synchronized with a frame synchronization signal. A synchronizing
circuit also synchronizes the transfer of data from the graphics memory to
the frame memory with the frame synchronization signal, so that each
displayed frame is generated from a single frame of image data, and not
from parts of two different frames. Moving images can therefore be
reproduced faithfully. This matrix-type display device is useful in mobile
information-terminal equipment, such as mobile telephone sets.