DISPLAY DRIVING CIRCUIT BUILT IN HALF VDD POWER SUPPLY CIRCUITAND DISPLAY DRIVING SYSTEM COMPRISING THE SAME

摘要

PURPOSE: A display driving circuit built in a half VDD power supply circuit and display driving system comprising the same is provided to omit an additional power supplying circuit to generate the power of a half VDD by generating half the VDD needed for a buffer operation inside the driving circuit. CONSTITUTION: A first buffer(310) includes a terminal of a first voltage, terminal of a second voltage and terminal of a half VDD. A second buffer(320) operates within the half VDD or the second voltage. A first switch(330) transmits an input signal to the first and second buffers. The second switch(340) transmits the input signal to the first and second buffers. A half VDD power supply circuit(350) supplies the power of the half VDD to the first and second buffers.