Patent ID: 6774892
Filing Date: 2004-08-10
Classification: G09G,G11C

Abstract:
A display driver IC, comprising:a plurality of memory cells arranged in a column direction and divided into a plurality of blocks, each block containing a specified number of memory cells; a plurality of display word lines that successively select the plurality of memory cells in the column direction; a main read line commonly shared by the plurality of memory cells, which transfers display data read from each one of the memory cells that are successively selected by the plurality of display word lines; a plurality of sub-read lines, one for each column-block of memory cells for transferring display data read from each one of the memory cells in that column-block; a plurality of main switches, one for each column-block for selectively connecting a corresponding one of the sub-read lines to the main read line; and a plurality of sub-switches, one for each of the plurality of memory cells, and selected by a respective one of the display word lines to thereby connect that memory cell to a corresponding one of the sub-read lines.