Display driver and display device

A display device, comprising:

• a display panel, comprising a plurality of data lines and a demultiplexer that receives one drive signal corresponding to K, which is an integer of 2 or more, data lines of the plurality of data lines for each of the K data lines, and sequentially supplies the one drive signal to each of the K data lines one by one for each of the K data lines;
• and
• a display driver, driving the display panel, and
• the display driver comprising
• a plurality of circuit blocks each receiving a plurality of pixel data pieces corresponding to each of pixels based on an image signal, and each generating, for each of K pixel data pieces of the pixel data pieces, a signal representing voltage values corresponding to brightness levels indicated by the respective K pixel data pieces by time division multiplexing as the one drive signal,
• each of the plurality of circuit blocks comprising
• a first multiplexer part that outputs first to Qth pixel data signals respectively representing the K pixel data pieces by Q, which is an integer of 2 or more, signal lines fewer than the K pixel data pieces by time division multiplexing at least one pair of pixel data pieces consisting of two data pieces among the K pixel data pieces,
• a level shift part that generates first to Qth high voltage pixel data signals by level shifting amplitude of the respective first to Qth pixel data signals to a high voltage side,
• a digital analog conversion part that converts the first to Qth high voltage pixel data signals into first to Qth gradation voltages having voltage values corresponding to brightness levels the first to Qth high voltage pixel data signals respectively represent,
• a second multiplexer part that outputs, for each of horizontal scanning periods of the image signal, a gradation voltage signal representing, by time division multiplexing, the voltage values corresponding to the respective K pixel data pieces represented by the first to Qth gradation voltages, and
• an output amplifier part that outputs a signal amplified from the gradation voltage signal as the one drive signal.