Liquid crystal display device

1. A liquid crystal display device comprising:

an image display unit including a plurality of pixels having a first liquid crystal material;

a temperature detecting unit for detecting an environmental temperature using a second liquid crystal material; and

a temperature control unit for controlling a temperature of the layer of the first liquid crystal material based on temperature information from the temperature detecting unit.

2. The liquid crystal display device of claim 1 , wherein the temperature detecting unit includes a first dielectric constant measuring portion measuring a dielectric constant in a minor axis of the second liquid crystal material.

3. The liquid crystal display device of claim 2 , wherein the first dielectric constant measuring portion includes:

first and second electrodes attached to the temperature detecting unit; and

a second liquid crystal material positioned between the first and second electrodes.

4. The liquid crystal display device of claim 2 , wherein the first dielectric constant measuring portion is positioned in a corner of the image display unit.

5. The liquid crystal display device of claim 2 , wherein the first dielectric constant measuring portion is positioned on a dummy substrate outside of the image display unit.

6. The liquid crystal display device of claim 1 , wherein the temperature detecting unit includes a first dielectric constant measuring portion measuring a dielectric constant in a major axis of the second liquid crystal material.

7. The liquid crystal display device of claim 6 , wherein the first dielectric constant measuring portion includes:

first and second electrodes attached to the temperature detecting unit; and

second liquid crystal material positioned between the first and second electrodes.

8. The liquid crystal display device of claim 6 , wherein the first dielectric constant measuring portion is positioned at a corners of the image display unit.

9. The liquid crystal display device of claim 6 , wherein the first dielectric constant measuring portion is positioned on a dummy substrate outside of the image display unit.

10. The liquid crystal display device of claim 1 , wherein the temperature detecting unit includes:

a first dielectric constant measuring portion measuring a dielectric constant in a minor axis of the second liquid crystal material; and

a second dielectric constant measuring portion measuring a dielectric constant in a major axis of a third liquid crystal material.

11. The liquid crystal display device of claim 10 , wherein the first dielectric constant measuring portion includes:

first and second electrodes attached to the temperature detecting unit; and

a second liquid crystal material positioned between the first and second electrodes.

12. The liquid crystal display device of claim 11 , wherein the second dielectric constant measuring portion includes:

third and fourth electrodes attached to the temperature detecting unit; and

a third liquid crystal material positioned between the third and fourth electrodes.

13. The liquid crystal display device of claim 10 , wherein the first and second dielectric constant measuring portions are positioned at opposite corners of the image display unit.

14. The liquid crystal display device of claim 10 , wherein the first and second dielectric constant measuring portions are positioned on a dummy substrate outside of the image display unit.

15. A liquid crystal display device comprising:

an image display unit including a plurality of pixels having a first layer of first liquid crystal material;

a temperature detecting unit for detecting an environmental temperature;

first and second electrodes attached to the temperature detecting unit, wherein the first and second electrodes are formed on a surfaces of first and second substrates the face each other;

a second liquid crystal material positioned between the first and second electrodes; and

a temperature control unit for controlling the temperature of the layer of the first liquid crystal material based on temperature information from the temperature detecting unit.

16. A liquid crystal display device comprising:

an image display unit including a plurality of pixels having a first liquid crystal material;

a first dielectric constant measuring portion measuring a dielectric constant in a minor axis of a second liquid crystal material;

a second dielectric constant measuring portion measuring a dielectric constant in a major axis of a third liquid crystal material; and

a temperature control unit for controlling the temperature of the layer of the first liquid crystal material based on measurements from the first and second dielectric constant measuring portions.

17. The liquid crystal display device of claim 16 , wherein the first dielectric constant measuring portion includes:

first and second substrates; and

first and second electrodes at facing surfaces of the first and second substrates, wherein the second liquid crystal material is positioned between the first and second electrodes.

18. The liquid crystal display device of claim 17 , wherein the second dielectric constant measuring portion includes third and fourth electrodes at the facing surfaces of the first and second substrates, wherein the third liquid crystal material is positioned between the third and fourth electrodes.

19. The liquid crystal display device of claim 16 , wherein the first and second dielectric constant measuring portions are positioned at opposite corners of the image display unit.

20. The liquid crystal display device of claim 16 , wherein the first and second dielectric constant measuring portions are positioned on a dummy substrate outside of the image display unit.