Liquid crystal display device
View Patent ↗A liquid crystal display device includes pixel cells that can be dot-inverted by a row-inversion driving scheme. According to an embodiment of the invention, a liquid crystal display device includes a first data line, a second data line, a first gate line, a second gate line, a third gate line, at least three of the sub-pixels arranged immediately adjacent along one of the data lines and corresponding to different colors to form a pixel, and a driving integrated circuit for sequentially driving the first, second and third gate lines in a horizontal period. During the horizontal period, a first signal supplied to a first sub-pixel of the pixel has a polarity opposite from a second signal supplied to a second sub-pixel of the pixel and the same as a third signal supplied to a third sub-pixel of the pixel.
1. A liquid crystal display device, comprising:
a plurality of data lines of a liquid crystal panel including a first data line and a second data line arranged substantially parallel to each other;
a plurality of gate lines of the liquid crystal panel including a first gate line, a second gate line, and a third gate line arranged substantially parallel to one another, the gate lines crossing the data lines;
a plurality of sub-pixels of the liquid crystal panel defined by the crossing the gate lines and the data lines and having red, green, and blue of three colors arranged repeatedly in a data line direction and the same colors arranged in a gate line direction;
a gate built-in circuit driving the gate lines formed in the liquid crystal panel, the gate built-in circuit sequentially driving the first, second, and third gate lines in a horizontal period; and
a driving integrated circuit driving the gate built-in circuit and supplying video signals inverted in a data line unit and a frame unit to the data lines,
wherein the driving integrated circuit divides one horizontal period into a first to third sub-periods, and aligns the data signals of the one horizontal period into red, green and blue data corresponding to each of the sub-periods,
wherein the driving integrated circuit comprises:
a signal relay unit for relaying and synchronizing data signals from a external driving system,
a first power generating unit for generating a first power,
a second power generating unit for generating a second power using the first power,
a clock generating unit generating clocks to drive the first and second power generating units,
a level setting unit setting voltage level of the first power supplied from the first power generating unit,
a common voltage generating unit for generating a common voltage supplied to a common electrode using the second power,
a signal control unit aligning the data signals from the signal relay unit and controlling the driving integrated circuit,
a control signal generating unit generating data control signals and gate driving signals using the synchronizing signals from the signal control unit,
a pull-up circuit for pulling up voltage levels of the gate driving signals using the second power and supplying the gate driving signals pulled up to the gate built-in circuit,
a gray scale voltage generating unit generating a plurality of gray scale voltages using the first power, and
a data converting unit converting aligned data signals supplied from the signal control unit using the plurality of gray scale voltages into video signals,
wherein the signal control unit realigns the red data aligned into odd-numbered red data to be supplied to odd-numbered data lines, and the red data aligned into even-numbered red data to be supplied to even-numbered data lines during a first subperiod of an one horizontal period,
the signal control unit realigns the green data aligned into odd-numbered green data to be supplied to even-numbered data lines, and the green data aligned into even-numbered green data to be supplied to odd-numbered data lines during a second subperiod of the one horizontal period, and
wherein the signal control unit realigns the blue data aligned into odd-numbered blue data to be supplied to odd-numbered data lines, and the blue data aligned into even-numbered blue data to be supplied to even-numbered data lines during a third subperiod of the one horizontal period.
2. The device of claim 1 , wherein:
each of the sub-pixels includes a switching element; and
the switching elements for the sub-pixels arranged between the first and second data lines are connected alternatively to one of the first and second data lines.
3. The device of claim 1 , wherein:
each of the sub-pixels includes a switching element; and
every two of the switching elements for the sub-pixels arranged between the first and second data lines are connected alternatively to one of the first and second data lines.
4. The device of claim 1 , wherein the sub-pixels are dot-inverted or two-dot-inverted.