Three dimensional image display device and a method of driving the same

1. A three dimensional image display device, comprising:

a display panel that alternately displays a left eye image and a right eye image,

wherein a common voltage synchronized with a voltage reset signal is applied to the display panel and the voltage reset signal is maintained at a high level for a predetermined time before the left eye image or the right eye image is input,

wherein the common voltage is a first voltage in which a reset voltage is added to a reference common voltage a first time the voltage reset signal is at the high level and the common voltage is a second voltage in which the reset voltage is subtracted from the reference common voltage a second time the voltage reset signal is at the high level,

wherein a gate-on voltage is simultaneously applied to a plurality of gate lines while the voltage reset signal is maintained at the high level,

wherein the three dimensional image display device further includes a gate-on voltage switching unit that simultaneously applies the gate-on voltage to the plurality of gate lines in response to the voltage reset signal having the high level being input to the gate-on voltage switching unit,

wherein the gate-on voltage switching unit comprises a first output terminal and a second output terminal, the first output terminal is directly connected to the plurality of gate lines, the second output terminal is directly connected to a gate driver, and the gate-on voltage is simultaneously applied to the plurality of gate lines via the first output terminal.

2. The three dimensional image display device of claim 1 , wherein:

the first voltage or the second voltage as the common voltage is maintained at a high level while the voltage reset signal is maintained at the high level.

3. The three dimensional image display device of claim 1 , wherein the gate-on voltage is sequentially applied to the plurality of gate lines while the voltage reset signal is maintained at a low level.

4. The three dimensional image display device of claim 1 , wherein a left eye shutter maintains an open state from a time when an input of the left eye image starts to a time when an application of a first pulse of the voltage reset signal starts, and a right eye shutter maintains an open state from a time when an input of the right eye image starts to a time when an application of a second pulse of the voltage reset signal starts, based on a 3D sync signal.

5. The three dimensional image display device of claim 4 , wherein the right eye shutter maintains a closed state from a time when an application of a third pulse of the voltage reset signal starts to a time when an application of a first pulse of the voltage reset signal ends and the left eye shutter maintains a closed state from a time when an application of the first pulse of the voltage reset signal starts to a time when an application of a second pulse of the voltage reset signal ends, based on the 3D sync signal.

6. The three dimensional image display device of claim 1 , further comprising:

a backlight unit,

wherein the backlight unit is turned-on from a time when an input of the left eye image starts to a time when an application of a first pulse of the voltage reset signal starts, and

the backlight unit is turned-on from a time when an input of the right eye image starts to a time when an application of a second pulse of the voltage reset signal starts.

7. The three dimensional image display device of claim 6 , wherein the backlight unit is turned-off for a time when the voltage reset signal is maintained at the high level.

8. The three dimensional image display device of claim 1 , wherein the display panel displays black for a predetermined time.

9. The three dimensional image display device of claim 1 , wherein the predetermined time is about 0.5 ms or less.

10. The three dimensional image display device of claim 1 , further comprising:

a common voltage switching unit that switches the common voltage based on the voltage reset signal.

11. A method of driving a three dimensional display device, the method comprising:

alternately displaying a left eye image and a right eye image in a display panel; and

applying a common voltage synchronized with a voltage reset signal to the display panel,

wherein the voltage reset signal is maintained at a high level for a predetermined time before the left eye image or the right eye image is input,

wherein the common voltage is a first voltage in which a reset voltage is added to a reference common voltage a first time the voltage reset signal is at the high level and the common voltage is a second voltage in which the reset voltage is subtracted from the reference common voltage a second time the voltage reset signal is at the high level,

wherein a gate-on voltage is simultaneously applied to a plurality of gate lines while the voltage reset signal is maintained at the high level,

wherein the gate-on voltage is simultaneously applied to the plurality of gate lines by a gate-on voltage switching unit when the voltage reset signal having the high level is input to the gate-on voltage switching unit,

wherein the gate-on voltage switching unit comprises a first output terminal and a second output terminal, the first output terminal is directly connected to the plurality of gate lines, the second output terminal is directly connected to a gate driver, and the gate-on voltage is simultaneously applied to the plurality of gate lines via the first output terminal.

12. The method of claim 11 , wherein the first voltage or the second voltage as the common voltage is maintained at a high level while the voltage reset signal is maintained at the high level.

13. A three dimensional (3D) image display device, comprising:

a display panel that alternately displays a first eye image and a second eye image,

wherein after the first eye image is displayed and before the second eye image displayed, a common voltage of a first level is applied to the display panel for a predetermined time, wherein the first level of the common voltage causes about the entire display panel to display black for the predetermined time,

wherein the common voltage is a first voltage in which a reset voltage is added to a reference common voltage a first time a voltage reset signal is at a high level and the common voltage is a second voltage in which the reset voltage is subtracted from the reference common voltage a second time the voltage reset signal is at the high level,

wherein a gate-on voltage is simultaneously applied to a plurality of gate lines while the voltage reset signal is at the high level,

wherein the 3D image display device further includes a gate-on voltage switching unit that simultaneously applies the gate-on voltage to the plurality of gate lines in response to the voltage reset signal having the high level being input to the gate-on voltage switching unit,

wherein the gate-on voltage switching unit comprises a first output terminal and a second output terminal, the first output terminal is directly connected to the plurality of gate lines, the second output terminal is directly connected to a gate driver, and the gate-on voltage is simultaneously applied to the plurality of gate lines via the first output terminal.

14. The 3D image display device of claim 13 , wherein the first level of the common voltage is maintained for the predetermined time by the voltage reset signal.

15. The 3D image display device of claim 14 , Wherein the first level of the common voltage is changed to a second level by the voltage reset signal immediately before the second eye image is displayed, wherein the second level causes about the entire display panel to stop displaying black.