Liquid crystal composition and liquid crystal display including same

Abstract

Disclosed is a liquid crystal display that includes a first substrate, a second substrate facing the first substrate, a pair of field generating electrodes formed on at least one of the first substrate and the second substrate, and a liquid crystal layer interposed between the first substrate and the second substrate. The liquid crystal layer comprises a liquid crystal composition that includes a first class having at least one fluorine atom, and a second class containing a neutral compound. The second class includes a first sub-class and a second sub-class. The first sub-class contains a liquid crystal compound having at least one selected from an alkyl group and an alkoxy group having C1 to C5 in a terminal group thereof. The second sub-class contains a liquid crystal compound having an alkenyl group having C1 to C5 in terminal groups thereof. The second sub-class is contained in a content of about 7 wt % or less of a total content of the liquid crystal composition.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a layout view of a thin film transistor array panel for a liquid crystal display according to an embodiment of the present invention;

FIG. 2 is a layout view of a common electrode panel for a liquid crystal display according to the embodiment of the present invention;

FIG. 3 is a layout view of a liquid crystal display that includes the thin film transistor array panel of FIG. 1 and the common electrode panel of FIG. 2;

FIGS. 4 and 5 are cross-sectional views of the liquid crystal display of FIG. 3 taken along the lines IV-IV and V-V, respectively; and

FIG. 6 is a graph showing the result of line residual image evaluation.

Claims

1. A liquid crystal composition, comprising: a first class including a liquid crystal compound having at least one fluorine atom; anda second class including at least one liquid crystal compound represented by one of Formulae I, II, and III,

2. The liquid crystal composition of claim 1, wherein: the first class is about 40 to 80 wt % of a total content of the liquid crystal composition; andthe second class is about 20 to 60 wt % of a total content of the liquid crystal composition.

3. The liquid crystal composition of claim 2, wherein: the first class comprises at least one liquid crystal compound represented by one of Formulae IV to X

4. A liquid crystal composition, comprising: a first class including a liquid crystal compound having at least one fluorine atom; anda second class including at least one of liquid crystal compound represented by one of Formulae I, II, and III,

5. The liquid crystal composition of claim 4, wherein: the first class is about 40 to 80 wt % of the total content of the liquid crystal composition; andthe second class is about 20 to 60 wt % of the total content of the liquid crystal composition.

6. The liquid crystal composition of claim 4, wherein the first class includes at least one liquid crystal compound represented by one of Formulae IV to X

7. A liquid crystal display, comprising: a first substrate;a second substrate facing the first substrate;a pair of field generating electrodes formed on at least one of the first substrate and the second substrate; anda liquid crystal layer interposed between the first substrate and the second substrate,wherein the liquid crystal layer comprises a liquid crystal composition that includes: a first class including a liquid crystal compound having at least one fluorine atom, anda second class including at least one liquid crystal compound represented by one of Formulae I, II, and III,

8. The liquid crystal display of claim 7, wherein: the first class is about 40 to 80 wt % of a total content of the liquid crystal composition; andthe second class is about 20 to 60 wt % of a total content of the liquid crystal composition.

9. The liquid crystal display of claim 7, wherein the first class includes at least one of the liquid crystal compounds represented by Formulae IV to X

10. The liquid crystal display of claim 7, further comprising: first and second signal lines that intersect on the first substrate; andthin film transistors that are connected to the first and second signal lines.

11. The liquid crystal display of claim 10, further comprising: an inclination direction determining member determining an inclination direction of the liquid crystal compound in the liquid crystal layer.

12. The liquid crystal display of claim 11, wherein the inclination direction determining member includes a cutout formed in a field generating electrode or a protrusion formed on the field generating electrode.

13. A liquid crystal display, comprising: a first substrate;a second substrate facing the first substrate;a pair of field generating electrodes formed on at least one of the first substrate and the second substrate; anda liquid crystal layer interposed between the first substrate and the second substrate,wherein the liquid crystal layer comprises a liquid crystal composition that includes: a first class including a liquid crystal compound having at least one fluorine atom, anda second class including a liquid crystal compound represented by one of Formulae I, II, and III

14. The liquid crystal display of claim 13, wherein: the first class is about 40 to 80 wt % of a total content of the liquid crystal composition; andthe second class is about 20 to 60 wt % of a total content of the liquid crystal composition.

15. The liquid crystal display of claim 13, wherein the first class comprises at least one of the liquid crystal compounds represented by Formulae IV to X

16. The liquid crystal display of claim 13, further comprising: first and second signal lines that intersect on the first substrate; andthin film transistors that are connected to the first and second signal lines.

17. The liquid crystal display of claim 16, further comprising: an inclination direction determining member determining an inclination direction of the liquid crystal compound in the liquid crystal layer.

18. The liquid crystal display of claim 17, wherein the inclination direction determining member includes a cutout formed in a field generating electrode or a protrusion formed on the field generating electrode.