Patent ID: 7084866
Filing Date: 2006-08-01
Classification: G09G

Abstract:
1. A display driver apparatus for driving a display comprising a plurality of pixels, each of which is located at a respective one of a plurality of intersections formed by an arrangement of a plurality of common electrodes positioned generally parallel to one another and extending in a first direction and one of a plurality of segment electrodes positioned generally parallel to one another and extending in a second direction, wherein an orientation state of an electro-optical material of each pixel is controlled by a voltage applied to it, the display driver apparatus comprising: a common electrode drive device that supplies a scanning signal for simultaneously selecting L common electrodes, where L is a natural number and L≧2; a segment electrode drive device that supplies a data signal to each of the plurality of segment electrodes; a single display data RAM from which N-bit display data are simultaneously read out for the L pixels at the respective L intersections that each of the plurality of segment electrodes form with the L common electrodes that are simultaneously selected, the single display data RAM including a memory address space in which the display data is organized according to the groups of L pixels, wherein for each of the L pixels in a particular group, L upper bits, one for each of the L pixels, are stored contiguously in a first sub-group and L lower bits, one for each of the L pixels, are stored contiguously in a second sub-group adjacent to the first sub-group; and a decoder having a plurality of sub-decoders and that divides the N-bit display data simultaneously read out from the single display data RAM into (N/L)-bit data units, decodes the (N/L)-bit data units, and outputs a voltage to be applied to each of the segment electrodes; wherein