A circuit device includes an interface unit that receives pieces of display data RD, GD, and BD, a data processing unit that performs data processing on the pieces of display data RD, GD, and BD, and a drive unit that drives a display panel based on display data from the data processing unit. The data processing unit performs data processing in which the display data RD that has been input to a first color component input channel of the interface unit is set to a first color component channel, a second color component channel, and a third color component channel of the same pixel. The drive unit drives the display panel based on the display data set in the first color component channel, the second color component channel, and the third color component channel.