Display driver and display apparatus

A display apparatus comprising:

• a display panel in which a plurality of display cells constituting cell groups each including j (j is an integer of two or more) display cells are arranged side by side on each of a plurality of horizontal scanning lines, the plurality of horizontal scanning lines being arranged side by side and intersecting with a plurality of data lines;
• and
• a display driver that drives the display panel according to pixel data pieces corresponding respectively to the plurality of display cells, wherein
• the display driver includes:
• a plurality of gradation reference voltage generating circuits that steadily generate respective gradation reference voltage groups according to gamma correction characteristics of color components different from one another;
• first to j-th digital to analog conversion circuits that select a gradation reference voltage corresponding to a luminance level represented by a pixel data piece among a gradation reference voltage group to output the gradation reference voltage as a gradation voltage, the first to j-th digital to analog conversion circuits being disposed corresponding to the cell groups, the first to j-th digital to analog conversion circuits being configured by including respective different color components, the first to j-th digital to analog conversion circuits being each fixedly coupled to one of the plurality of gradation reference voltage generating circuits, the gradation reference voltage group being generated by the one of the gradation reference voltage generating circuits;
• an output unit that receives the first to j-th gradation voltages together with an output switching signal, the output unit assigning the first to j-th gradation voltages to respective first to j-th driving voltage signals in a mode according to the output switching signal, the output unit outputting the assigned first to j-th driving voltage signals to the display panel;
• and
• an output control unit that receives a division number setting signal indicating a division number to generate a signal to switch modes of assigning the first to j-th gradation voltages to the first to j-th driving voltage signals at every division period obtained by dividing a horizontal scanning period by the division number as the output switching signal, the output control unit generating an input switching signal that causes the first to j-th driving voltage signals to be input in turn to the respective data lines as many as the division number at a cycle of division periods for respective first to j-th driving voltage signals, the output control unit outputting the input switching signal to the display panel.