Patent ID: 7782282

Claim:
A display device, comprising: first and second substrates facing each other, the first substrate having a display region and a non-display region; at least one data line on the first substrate; at least one gate line crossing the data line, the gate line supplied with a gate voltage; at least one pixel in the display region connected to a corresponding gate line and data line; and a first driving circuit including at least: a first driving unit connected to a first gate line to output a first gate voltage; and a second driving unit connected to a second gate line to output a second gate voltage, wherein the first driving unit is supplied with at least a start gate voltage and the second gate voltage from the second driving unit to output the first gate voltage to the pixel, wherein each of the first and second driving units is supplied with an on gate voltage, an off gate voltage, and a control signal wherein the first driving unit includes: a first portion outputting the on gate voltage, the first portion being supplied with the on and off gate voltages, the start gate voltage, the second gate voltage, and a first control signal; and a second portion outputting the off gate voltage, the second portion being supplied with the on and off gate voltages, the start gate voltage, and the second gate voltage, wherein the first portion includes: a first selection portion selecting one of the on and off gate voltages using the start and second gate voltages, and a first switching portion switching the on gate voltage using the outputted voltage from the selection portion and the first control signal, and wherein the first switching portion includes: a first switching section switching the on gate voltage using the outputted voltage from the first selection portion, and a second switching section switching the outputted voltage from the first switching portion using the first control signal.