Importance

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Abstract

There is provided a display driver IC including an image memory which stores display data supplied from a host processor, a timing controller which reads the display data from the image memory and drives a connected display panel, and an internal clock oscillation circuit which supplies an internal clock to the timing controller. An oscillation frequency of the internal clock oscillation circuit is calibrated on the basis of an external clock supplied from an external device. An operation of the host processor which supplies the external clock can be suspended, thereby reducing power consumption of a display apparatus as a whole. Therefore, an expensive oscillation vibrator is not necessary, and thus it is possible to minimize an increase in a cost of the display apparatus.

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First Claim