Display device and driving method therefor

A display device comprising:na first pixel disposed on a first pixel row and a second pixel disposed on a second pixel row adjacent to the first pixel row and adjacent to the first pixel in a column direction;a first gate line for transmitting a first gate-on voltage to the first pixel;a second gate line for transmitting a second gate-on voltage to the second pixel;a data line for transmitting first and second data voltages to the first and second pixels, respectively, and;an image signal modifier for modifying a second input image signal based on a first input image signal for the first pixel, the second input image signal for the second pixel and a pixel row number of the second pixel to generate a modified image signal;a gate driver for applying the first and second gate-on voltages to the first and second gate lines, respectively; anda data driver for changing the first input image signal and the modified image signal into the first and second data voltages to apply to the data line, respectively,wherein the first gate-on voltage overlaps the second gate-on voltage for a predetermined time to pre-charge the second pixel with the first data voltage of the first pixel,wherein the image signal modifier comprises a counter for counting the pixel row number of the second pixel to output a counted value and modifying the second input image signal based on the counted value, andwherein the image signal modifier calculates the modified image signal dq′ using dq′=dq+f(q, dq, dq−1) (where dq is the second input image signal, q is the counted value, and dq−1 is the first input image signal),wherein, if dq−dq−1>0, f(q, dq, dq−1)>0,if dq−dq−1 q, |f(r, dr, dr−1)|≧|f(q, dq, dq−1)|.

A display device comprising:na first pixel disposed on a first pixel row and a second pixel disposed on a second pixel row adjacent to the first pixel row and adjacent to the first pixel in a column direction;a first gate line for transmitting a first gate-on voltage to the first pixel;a second gate line for transmitting a second gate-on voltage to the second pixel;a data line for transmitting first and second data voltages to the first and second pixels, respectively, andan image signal modifier for modifying a second input image signal based on a first input image signal for the first pixel, the second input image signal for the second pixel and a pixel row number of the second pixel to generate a modified image signal;a gate driver for applying the first and second gate-on voltages to the first and second gate lines, respectively; anda data driver for changing the first input image signal and the modified image signal into the first and second data voltages to apply to the data line, respectively,wherein the first gate-on voltage overlaps the second gate-on voltage for a predetermined time to pre-charge the second pixel with the first data voltage of the first pixel,wherein the image signal modifier comprises a counter for counting the pixel row number of the second pixel to output a counted value and modifying the second input image signal based on the counted value, andwherein the image signal modifier calculates the modified image signal dq′ using dq′=dq+α(q)(dq−dq-1) (where dq is the second input image signal, q is the counted value, and dq−1 is the first input image signal),wherein α(0)=0 and if r>q, α(r)>α(q).

A driving method of a display device having a first pixel disposed on a first pixel row and a second pixel disposed on a second pixel row adjacent to the first pixel row and adjacent to the first pixel in a column direction;na first gate line for transmitting a first gate-on voltage to the first pixel, a second gate line for transmitting a second gate-on voltage to the second pixel, and a data line for transmitting first and second data voltages to the first and second pixels, respectively;an image signal modifier for modifying a second input image signal based on a first input image signal for the first pixel, the second input image signal for the second pixel and a pixel row number of the second pixel to generate a modified image signal;a gate driver for applying the first and second gate-on voltages to the first and second gate lines, respectively; anda data driver for changing the first input image signal and the modified image signal into the first and second data voltages to apply to the data line, respectively, the method comprisingapplying the first gate-on voltage to the first gate line,applying the first data voltage to the first pixel,applying the second gate-on voltage to the second gate line,applying the first data voltage to the second pixel to pre-charge the second pixel with the first data voltage,stopping application of the first gate-on voltage,applying the second data voltage to the second pixel, andstopping application of the second gate-on voltage,wherein the first gate-on voltage overlaps the second gate-on voltage for a predetermined time,wherein the image signal modifier comprises a counter for counting the pixel row number of the second pixel to output a counted value and modifying the second input image signal based on the counted value, andwherein the image signal modifier calculates the modified image signal dq′ using dq′=dq+f(q, dq, dq−1) (where dq is the second input image signal, q is the counted value, and dq−1 is the first input image signal),wherein, if dq−dq−1>0, f(q, dq, dq−1)>0,if dq−dq−1 q, |f(r, dr, dr−1)|≧|f(q, dq, dq−1)|.