Patent ID: 8022906

Claim:
A driver for use in a flat panel display comprising: a plurality of reference current driving blocks, each of the reference current driving blocks including a first current mirror that comprises a pair of low-voltage NMOS transistors for generating a first mirroring current by mirroring a reference current output from a reference current source; a plurality of driving block selectors for selecting one pair of the low-voltage NMOS transistors in one of the reference current driving blocks to be activated according to a turn-on signal, and for transferring the reference current to the selected reference current driving block, wherein the turn-on signal is generated by grouping a range of digital pixel data into a predetermined number, and the turn-on signal is transmitted to a designated driving block selector when a digital value of the grouped range is inputted; and at least one channel, each channel including a second current mirror that comprises high-voltage PMOS transistors, wherein the first mirroring current flows from a corresponding one of the low-voltage NMOS transistors to a corresponding one of the high-voltage PMOS transistors to generate a second mirroring current, and at least one channel switch coupled between the first and second current mirrors to select a segment line from among a plurality of segment lines, wherein the low-voltage NMOS transistors occupy a smaller area than the high-voltage PMOS transistors, wherein the reference current driving blocks and the driving block selectors are formed on a reference substrate area disposed at a center of a segment line controller, and the channel is formed on a channel substrate area located at both sides of the reference substrate area, wherein a high-voltage PMOS transistor has a small incremental amount of a current with respect to the voltage, and wherein a low-voltage NMOS transistor has a large incremental amount of a current with respect to the voltage.