Liquid crystal display device and driving method of the same
A liquid crystal display device driven by a N-line inversion driving method, in which N odd horizontal lines and N even horizontal lines are alternately driven, wherein N is a natural number larger than 1, includes a liquid crystal panel including pixels, gate and data drivers providing gate driving signals and data signals to the pixels, a timing controller receiving control signals and video signals from an outer system and controlling the gate and data drivers according to the control signals, wherein the timing controller changes an order of the video signals every frame and supplies the video signals to the data driver, a frame memory unit connected to the timing controller and storing the video signals of each frame, and a common voltage generator providing a common voltage to the liquid crystal panel.
1 . A liquid crystal display device driven by a N-line inversion driving method in which N odd horizontal lines and N even horizontal lines are alternately driven, wherein N is a natural number larger than 1, the device comprising:
a liquid crystal panel including pixels;
gate and data drivers providing gate driving signals and data signals to the pixels;
a timing controller receiving control signals and video signals from an external system and controlling the gate and data drivers according to the control signals, wherein the timing controller changes an order of the video signals every frame and supplies the video signals to the data driver;
a frame memory unit connected to the timing controller and storing the video signals of each frame; and
a common voltage generator providing a common voltage to the liquid crystal panel.
2 . The device according to claim 1 , wherein the frame memory unit includes first and second frame memories that store the video signals corresponding to Mth frame (where M is a natural number) and the video signals corresponding to (M+1)th frame, respectively.
3 . The device according to claim 2 , wherein the order of the video signals provided to the data driver during the Mth frame is opposite to the order of the video signals provided to the data driver during the (M+1)th frame.
4 . The device according to claim 1 , wherein two odd horizontal lines and two even horizontal lines are alternately driven.
5 . The device according to claim 4 , wherein the order of the video signals provided to the data driver at Mth frame (where M is a natural number) corresponds to an order of Kth, (K+2)th, (K+1)th and (K+3)th horizontal lines (where K is a natural number), and the order of the video signals provided to the data driver at (M+1)th frame corresponds to an order of the (K+3)th, (K+1)th, (K+2)th and Kth horizontal lines gate electrode extends from the first gate line, and the organic semiconductor layer extends under the first gate line.
6 . A driving method of a liquid crystal display device, which includes a liquid crystal panel having pixels, gate and data drivers controlling the pixels, a timing controller controlling the gate and data drivers, changing an order of video signals every frame and supplying the video signals to the data driver, and a frame memory unit storing the video signals of each frame, wherein the liquid crystal display device is driven by a N-line inversion driving method in which N odd horizontal lines and N even horizontal lines are alternately driven, wherein N is a natural number larger than 1, the driving method comprising:
storing the video signals of Mth frame (M is a natural number) into a first frame memory of the frame memory unit;
supplying the data driver with the video signals of the Mth frame in a first order;
storing the video signals of (M+1)th frame into a second frame memory of the frame memory unit; and
supplying the data driver with the video signals of the (M+1)th frame in a second order.
7 . The driving method according to claim 6 , wherein the first order corresponds to an order of the N odd horizontal lines and the N even horizontal lines, and the second order corresponds to an order of the N even horizontal lines and the N odd horizontal lines.
8 . The driving method according to claim 6 , wherein the first order of the video signals provided to the data driver during the Mth frame is opposite to the second order of the video signals provided to the data driver during the (M+1)th frame.
9 . The driving method according to claim 6 , wherein two odd horizontal lines and two even horizontal lines are alternately driven.
10 . The driving method according to claim 9 , wherein the video signals of the Mth frame are provided to the data driver in the first order corresponding to Kth (K is a natural number), (K+2)th, (K+1)th and (K+3)th horizontal lines, and the video signals of the (M+1)th frame are provided to the data driver in the second order corresponding to (K+3)th, (K+1)th, (K+2)th and Kth horizontal lines.
11 . The driving method according to claim 10 , wherein during the Mth frame, the video signals corresponding to the Kth and (K+2)th horizontal lines have a first polarity, and the video signals corresponding to (K+1)th and (K+3)th horizontal lines have a second polarity opposite to the first polarity.
12 . The driving method according to claim 11 , wherein during the (M+1)th frame, the video signals corresponding to the (K+3)th and (K+1)th horizontal lines have the first polarity, and the video signals corresponding to (K+2)th and Kth horizontal lines have the second polarity.