2-dimensional and 3-dimensional image display device and method of manufacturing the same

1. A display device comprising:

an image display panel including first and second substrates with a first liquid crystal layer interposed therebetween;

a switching panel including third and fourth substrates with a second liquid crystal layer interposed therebetween; and

a backlight unit for supplying light to the image display panel and the switching panel,

wherein the switching panel switches the display between a 2-dimensional display mode and a 3-dimensional display mode,

wherein a pixel electrode and a common electrode are formed on the fourth substrate, wherein the fourth substrate is made of glass,

wherein a protective layer is formed between the pixel electrode and the common electrode,

wherein the switching panel is formed between the backlight and the image display panel, and

wherein the second liquid crystal layer of the switching panel forms a parallax barrier including a transmissive region and a blocking region according to an applied voltage to the second liquid crystal layer between the pixel electrode and the common electrode so as to switch the 2-dimensional display mode to the 3-dimensional display mode,

wherein the pixel electrodes are formed such that they are symmetrically inclined at a predetermined angle with respect to an alignment direction of an alignment layer formed on the fourth substrate.

2. The display device according to claim 1 , wherein the first substrate is a color filter substrate.

3. The display device according to claim 1 , wherein the second substrate is a thin film transistor substrate.

4. The display device according to claim 1 , wherein the third substrate is a glass substrate.

5. The display device according to claim 1 , wherein the pixel electrode and the common electrode are formed of a transparent metal.

6. The display device according to claim 1 , wherein the pixel electrode is formed of a transparent metal but the common electrode is formed of an opaque metal.

7. The display device according to claim 1 , wherein an angle between the pixel electrode and the alignment direction is in a range of 3° to 5°.

8. The display device according to claim 1 , wherein the common electrode is formed such that it is inclined at a predetermined tilt angle.

9. The display device according to claim 1 , wherein an additional common electrode has a different width than the common electrode.

10. The display device according to claim 1 , wherein the common electrode has a step-shaped structure.