DA converter circuit, liquid crystal driver circuit, liquid crystal display apparatus, and method for designing DA converter circuit

The present invention provides a DA converter circuit configured to output a gray scale voltage to a liquid crystal display panel, wherein the gray scale voltage is generated from reference voltages fewer than gray scales of the liquid crystal display panel, and still to be able to prevent deterioration in display quality of the liquid crystal display panel. A DA converter circuit 43 for outputting a gray scale voltage to a liquid crystal display panel in accordance with a gray scale value externally inputted to the DA converter circuit 43, where the gray scale voltage and the gray scale value are of n gray scales and n is a natural number of 2 or more, the DA converter circuit comprising: a reference voltage generator circuit 431 for generating m reference voltages, which are different from each other, where m is a natural number less than n; a selector circuit 432 for selecting one or two reference voltages from the m reference voltages in according to the inputted gray scale value; and a voltage follower c