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摘要

PROBLEM TO BE SOLVED: To provide a gain control circuit and a display device that no malfunction is caused even in the case of a high speed clock without increasing the cost and electric power consumption. SOLUTION: In a display device 100, γ compensation look up tables of R, G and B are stored in a RAM, which is capable of writing and reading in synchronism with a 40 HMz master clock MCLK, to make the tables reloadable. Moreover, a gain control circuit 104 is provided to rewrite the data of the tables based on the addresses and gain data by a microcomputer 107.