Liquid crystals and liquid crystal display apparatus employing the same

1. A liquid crystal display apparatus, comprising:

a first substrate having a pixel area;

a date line disposed on the first substrate;

a data line disposed across the gate line to define the pixel area at a crossing of the gate line and the data line;

a pixel electrode to receive a data voltage corresponding to an image of the pixel area, the pixel electrode being disposed in the pixel area;

a second substrate facing the first substrate;

a common electrode to receive a common voltage, the common electrode being disposed on the second substrate; and

a plurality of liquid crystals disposed between the first substrate and the second substrate, wherein each liquid crystal comprises about 60 wt % to about 80 wt % of a first compound material having a dielectric anisotropy of a first polarity, about 2 wt % to about 15 wt % of a second compound material having a dielectric anisotropy of a second polarity, and a neutral compound material,

wherein the pixel electrode overlaps at least one of the gate line and the data line, and wherein a frame frequency of the image is about 120 Hz.

2. The apparatus of claim 1 , wherein a content of the second compound material is about 2 wt % to about 7 wt %.

3. The apparatus of claim 1 , wherein the neutral compound material comprises a compound expressed by the following chemical formula 1, and wherein the first compound material comprises at least one compound expressed by one of the following chemical formulas 2, 3, and 4

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules, and “Y” denotes an alkenyl group

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules, and “Y” denotes an alkoxy group

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules, and “Y” denotes an alkoxy group

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules, and “Y” denotes an alkoxy group.

4. The apparatus of claim 3 , wherein a content of the compound expressed by chemical formula 1 is about 25 wt % to about 35 wt %, wherein a content of the compound expressed by chemical formula 2 is about 15 wt % to about 20 wt %, wherein a content of the compound expressed by chemical formula 3 is about 20 wt % to about 30 wt %, and wherein a content of the compound expressed by chemical formula 4 is about 15 wt % to about 25 wt %.

5. The apparatus of claim 3 , wherein the neutral compound material further comprises at least one compound expressed by one of the following chemical formulas 5, 6, 7, and 8, and wherein the first compound material further comprises at least one compound expressed by the following chemical formulas 9 and 10

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules, and “Y” denotes an alkyl group

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules, and “Y” denotes an alkoxy group

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules, and “Y” denotes an alkyl group

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules, and “Y” denotes an alkoxy group

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules, and “Y” denotes an alkyl group

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules, and “Y” denotes an alkyl group.

6. The apparatus of claim 5 , wherein the second compound material comprises at least one compound expressed by the following chemical formulas 11, 12, 13, 14, 15, 16, 17, and 18

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules.

7. The apparatus of claim 6 , wherein a dielectric anisotropy of the liquid crystal is within a range of about −2.6 to about −3.4.

8. The apparatus of claim 7 , wherein a ratio of the dielectric anisotropy to a vertical dielectric constant of the liquid crystal is within a range of about 0.31 to about 0.46.

9. The apparatus of claim 8 , wherein the liquid crystal has a phase transition temperature of about 70° C. to about 95° C. and a diffractive anisotropy of about 0.103or the less.

10. The apparatus of claim 1 , wherein the first compound material comprises at least one compound expressed by one of the following chemical formulas 1, 2, 3, 4, 5, 6, 7, and 8

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules.

11. The apparatus as set forth in claim 10 , wherein the second compound material comprises at least one compound expressed by one of the following chemical formulas 9, 10, 11, 12, and 13

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules, and “Y” denotes an alkoxy group

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules, and “Y” denotes an alkoxy group

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules, and “Y” denotes an alkyl group

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules, and “Y” denotes an alkoxy group

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules, and “Y” denotes an alkyl group.

12. The apparatus of claim 11 , wherein the neutral compound material comprises at least one compound expressed by one of the following chemical formulas 14, 15, 16, 17, and 18

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules, and “Y” denotes an alkyl group

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules, and “Y” denotes an alkoxy group

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules, and “Y” denotes an alkyl group

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 molecules, and “Y” denotes an alkoxy group

wherein, “X” denotes a hydrocarbon having 2, 3, 4, or 5 carbon molecules, and “Y” denotes an alkenyl group.

13. The apparatus of claim 1 , further comprising:

a first domain divider arranged at the pixel electrode; and

a second domain divider arranged at the common electrode and spaced apart from the first domain divider, the first domain divider and the second domain divider dividing the pixel area into a plurality of domains,

wherein the pixel electrode comprises a first pixel electrode and a second pixel electrode having a smaller area than the first pixel electrode, wherein the first pixel electrode overlaps at least one of the gate line and the data line, and wherein a first data voltage and a second data voltage, which are different from each other, are applied to the first pixel electrode and the second pixel electrode, respectively.

14. The apparatus of in claim 1 , wherein the pixel area does not have any storage capacitors.