(57) A liquid crystal controller (20) includes a memory (21) for storing a plurality of
gray scale conversion tables (21b) each having a different gray scale changing degree;
a selecting section (22a) for selecting, from the plurality of gray scale conversion
tables (21b), a gray scale conversion table to be referred to; and a conversion section
(22b) for converting input gray scale data with reference to the gray scale conversion
table (21b) selected. A selection condition in the selecting section (22a) is set
such that: (i) as a vertical frequency of a liquid crystal display becomes higher
and a liquid crystal temperature becomes lower, the gray scale conversion table of
a higher gray scale changing degree is selected; and (ii) in regard to at least one
of the gray scale conversion tables (21b), as the vertical frequency becomes higher,
a liquid crystal temperature range in which the at least one gray scale conversion
table (21b) is to be selected becomes wider. As a result, gray scale conversion that
is more suitable for an overshoot drive is implemented.
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