Three-dimensional image display device
View Patent ↗A three-dimensional image display device includes a luminance controller receiving a three-dimensional enable signal, a backlight data signal and at least one starting signal of a scan starting signal, a vertical blank starting signal and a backlight starting signal. The luminance controller outputs a backlight control signal and a backlight unit is operated based on the backlight control signal and is coupled to the luminance controller. The backlight data signal is based on a previous pulse of the starting signal and is applied from a first time when a current pulse of the starting signal starts to a second time when a next pulse of the starting signal starts.
1. A three-dimensional image display device, comprising:
a luminance controller which receives a three-dimensional enable signal, a backlight data signal and at least one starting signal of a scan starting signal, a vertical blank starting signal and a backlight starting signal, and outputs a backlight control signal; and
a backlight unit operated based on the backlight control signal and coupled to the luminance controller,
wherein the control signal applied from a first time when a current pulse of the starting signal starts to a second time when a next pulse of the starting signal starts is based on the backlight data signal corresponding to a previous pulse of the starting signal.
2. The three-dimensional image display device of claim 1 , wherein:
the scan starting signal comprises a first pulse informing a starting of every frame.
3. The three-dimensional image display device of claim 2 , wherein:
the backlight data signal is data of a bit unit and the backlight data signal is 0 or 2 n−1 , wherein n is a natural number.
4. The three-dimensional image display device of claim 3 , wherein:
the vertical blank starting signal comprises a first pulse and a second pulse informing a starting of a vertical blank.
5. The three-dimensional image display device of claim 4 , wherein:
the backlight data signal based on the first pulse is 0 and the backlight data signal based on the second pulse is 2 n−1 , wherein n is a natural number.
6. The three-dimensional image display device of claim 3 , wherein:
the backlight starting signal comprises the first pulse and a third pulse and a timing of the third pulse is earlier or later than the starting of a vertical blank.
7. The three-dimensional image display device of claim 6 , wherein:
the backlight data signal based on the first pulse is 0 and the backlight data signal based on the third pulse is 2 n−1 , wherein n is a natural number.
8. The three-dimensional image display device of claim 2 , wherein:
the backlight data signal includes any one of values from about 10 percent of 2 n−1 to about 50 percent of 2 n−1 , wherein n is a natural number.
9. The three-dimensional image display device of claim 8 , wherein:
the backlight data signal is based on the first pulse.
10. The three-dimensional image display device of claim 9 , wherein:
the luminance controller is an off-duty type luminance controller.
11. The three-dimensional image display device of claim 8 , wherein:
the backlight starting signal comprises a fourth pulse and a timing of the fourth pulse is earlier or later than a starting of a vertical blank.
12. The three-dimensional image display device of claim 11 , wherein:
the backlight starting signal is based on the fourth pulse.
13. The three-dimensional image display device of claim 12 , wherein:
the luminance controller is an on-duty type luminance controller.
14. The three-dimensional image display device of claim 1 , wherein:
a magnitude in a current flowing in the backlight unit when the three-dimensional enable signal is in a high level is greater than the magnitude in a current flowing in the backlight unit when the three-dimensional enable signal is in a low level.
15. The three-dimensional image display device of claim 14 , wherein:
the three-dimensional image display device comprises a switching member comprising a first switch connected to a first resistor and a second switch connected to a second resistor, and
when the three-dimensional enable signal is in a high level, the first switch and the second switch are turned-on.
16. The three-dimensional image display device of claim 15 , wherein:
when the three-dimensional enable signal is in a low level, the first switch is turned-on and the second switch is turned-off.
17. The three-dimensional image display device of claim 1 , further comprising a gate driver integrated into a display device alternately displaying a left eye image and a right eye image and
the vertical blank starting signal resets a gate driver.
18. The three-dimensional image display device of claim 17 , wherein:
the gate driver comprises a plurality of stages connected to each other, the plurality of stages comprise a dummy stage and the vertical blank starting signal is applied to the dummy stage.
19. The three-dimensional image display device of claim 17 , wherein:
a magnitude in a current flowing in the backlight unit when the three-dimensional enable signal is in a high level is greater than the magnitude in a current flowing in the backlight unit when the three-dimensional enable signal is in a low level.
20. The three-dimensional image display device of claim 19 , further comprising a switching member comprising a first switch connected to a first resistor and a second switch connected to a second resistor, and
when the three-dimensional enable signal is in a high level, the first switch and the second switch are turned-on.