Liquid crystal display device and method of driving the same
View Patent ↗A liquid crystal display device includes a liquid crystal panel including a liquid crystal layer; and a driving circuit including a data driver supplying a data voltage to the liquid crystal panel, wherein the liquid crystal panel displays white at a first data voltage and black at a second data voltage, and wherein a level of the first data voltage is higher than 0V and a level of the second data voltage is higher than the level of the first data voltage.
1. A liquid crystal display device, comprising:
a liquid crystal panel including a liquid crystal layer; and
a driving circuit including a data driver supplying a data voltage to the liquid crystal panel,
wherein the liquid crystal panel displays white at a first data voltage and black at a second data voltage, and wherein a level of the first data voltage is higher than 0V and a level of the second data voltage is higher than the level of the first data voltage, and
wherein a transmittance of the liquid crystal panel at the first data voltage is greater than that at a voltage lower than the first data voltage and that at a voltage higher than the first data voltage.
2. The device of claim 1 , wherein a first retardation value of the liquid crystal layer for the liquid crystal panel to display white at the first data voltage is more than a second retardation value of the liquid crystal layer for the liquid crystal panel to display white at 0V.
3. The device of claim 2 , wherein the liquid crystal layer is a TN mode liquid crystal layer, and the first retardation value is within a range of about 500 nm to 624 nm.
4. The device of claim 2 , wherein the liquid crystal layer is an ECB mode liquid crystal layer, and the first retardation value is within a range of about 286 nm to 357 nm.
5. A method of driving a liquid crystal display device, comprising:
applying a first data voltage to a pixel of a liquid crystal panel first for a first time out of a first data-applying time in a first frame, the liquid crystal panel including a liquid crystal layer; and
applying a second data voltage displaying white to the pixel for a second time out of the first data-applying time after the first time,
wherein a level of the second data voltage is higher than 0V and lower than a level of a third data voltage displaying black, and a level of the first data voltage is within a range of equal to or higher than 0V and lower than the level of the second data voltage, and
wherein a transmittance of the liquid crystal panel at the second data voltage is greater than that at a voltage lower than the second data voltage and that at a voltage higher than the second data voltage.
6. The method of claim 5 , wherein a first retardation value of the liquid crystal layer for the liquid crystal panel to display white at the second data voltage is more than a second retardation value of the liquid crystal layer for the liquid crystal panel to display white at 0V.
7. The method of claim 6 , wherein the liquid crystal layer is a TN mode liquid crystal layer, and the first retardation value is within a range of about 500 nm to 624 nm.
8. The method of claim 6 , wherein the liquid crystal layer is an ECB mode liquid crystal layer, and the first retardation value is within a range of about 286 nm to 357 nm.
9. The method of claim 5 , further comprising:
applying a fourth data voltage to the pixel first for a third time out of a second data-applying time in a second frame;
applying the third data voltage to the pixel for a fourth time out of the second data-applying time after the third time,
wherein a level of the fourth data voltage is higher than the level of the third data voltage.