Device and method for driving large-sized and high-resolution display panel

1. A display device comprising:

a display panel including:

a plurality of data lines extending in a column direction,

a plurality of scan lines extending in a row direction,

a plurality of pixels disposed at respective intersections of said plurality of data lines and said plurality of scan lines, and

a dummy data line arranged in parallel to said plurality of data lines;

a data line driving circuitry driving said plurality of data lines and said dummy data line; and

a scan line driving circuitry driving said plurality of scan lines,

wherein:

said data line driving circuitry feeds a dummy signal to said scan line driving circuitry through said dummy data line,

said scan line driving circuitry drives said scan lines in response to said dummy signal,

said data line driving circuitry feeds said dummy signal to said scan line driving circuitry through connection nodes located at intersections of said plurality of scan lines and said dummy data line,

said scan line driving circuitry includes a plurality of gate driver ICs for driving said plurality of said scan lines, wherein each of said gate driver ICs includes:

a comparator receiving said dummy signal and generating a scan control signal from said dummy signal and a reference voltage, and

an output circuit unit drives associated ones of said plurality scan lines in response to said scan control signal,

wherein a pulse width of said scan control signal generated by said comparator within a first gate driver IC among said plurality of gate driver ICs located relatively away from said data line driving circuitry is larger than a pulse width of said scan control signal generated by said comparator within a second gate driver IC among said plurality of gate driver ICs located relatively close to said data line driving circuitry.

2. The display device according to claim 1 , wherein said scan line driving circuitry controls pulse widths of scan signals developed on said scan lines in response to said dummy signal.

3. The display device according to claim 1 , wherein said dummy data line is positioned between said scan line driving circuitry and a first data line located closest to said scan line driving circuitry out of said plurality of said data lines.

4. The display device according to claim 1 , wherein said data line driving circuitry includes:

a first amplifier generating a display signal on said first data line; and

a second amplifier generating said dummy signal on said dummy data line, and

wherein said first and second amplifiers have the same circuit configuration.

5. The display device according to claim 1 , wherein the reference voltage of the first gate driver IC is different from the reference voltage of the second gate driver IC.

6. A gate line driving circuitry comprising:

a plurality of gate driver ICs for driving a plurality of scan lines,

wherein each of said gate driver ICs includes:

a comparator receiving a dummy signal and generating a scan control signal based on said dummy signal and a reference voltage, and

an output circuit unit driving corresponding said plurality of scan lines in response to said scan control signal, and

wherein a pulse width of said scan control signal generated by said comparator within a first gate driver IC of said plurality of gate driver ICs located relatively away from a data line driving circuitry driving data lines is larger than a pulse width of said scan control signal generated by said comparator within a second gate driver IC of said plurality of gate driver ICs located relatively close to said data line driving circuitry.

7. The gate line driving circuitry according to claim 6 , wherein the reference voltage of the first gate driver IC is different from the reference voltage of the second gate driver IC.