Three-dimensional image display device and driving method thereof
View Patent ↗A three-dimensional image display device includes: a display panel assembly including a display panel including pixels which alternately displays first and second images, and a data driver which transmits data voltages to the pixels; a backlight unit which provides light to the display panel assembly; and a shutter member including first and second shutters, where the backlight unit emits the light during light emitting periods, the light emitting periods includes first light emitting periods, during which the first image is displayed, and second light emitting periods, during which the second image is displayed, the first light emitting periods and the second light emitting periods alternate, and the first shutter is opened during at least two open periods, which are between neighboring second light emitting periods of the second light emitting periods and temporally spaced apart from each other.
1. A three-dimensional image display device comprising:
a display panel assembly including a display panel, wherein the display panel comprises:
a plurality of pixels which alternately displays a first image and a second image; and
a data driver which transmits data voltages to the plurality of pixels;
a backlight unit which provides light to the display panel assembly; and
a shutter member including a first shutter and a second shutter,
wherein the backlight unit emits the light during a plurality of light emitting periods,
wherein the plurality of light emitting periods includes a plurality of first light emitting periods, during which the first image is displayed, and a plurality of second light emitting periods, during which the second image is displayed,
wherein the plurality of first light emitting periods and the plurality of second light emitting periods alternate,
the first shutter is opened during at least two open periods, which are between neighboring second light emitting periods of the plurality of second light emitting periods and temporally spaced apart from each other,
the second shutter is opened during at least two open periods, which are between neighboring first light emitting periods of the plurality of first light emitting periods and temporally spaced apart from each other,
the at least two open periods of the first shutter and the at least two open periods of the second shutter do not overlap each other, and
the open periods of the first shutter and the open periods of the second shutter are alternately arranged.
2. The three-dimensional image display device of claim 1 , wherein
the at least two open periods of the first shutter include:
a primary open period overlapping at least a portion of one of the plurality of first light emitting periods, which is between the neighboring second light emitting periods; and
a first additional open period between one of the plurality of first light emitting periods and one of the plurality of second light emitting periods, which are neighboring each other.
3. The three-dimensional image display device of claim 2 , wherein
the data voltage includes a first data voltage for the first image and a second data voltage for the second image,
a vertical blank period is between an input period of the first data voltage and an input period of the second data voltage, and
the vertical blank period overlaps at least one of the plurality of light emitting periods.
4. The three-dimensional image display device of claim 3 , wherein
the second shutter is closed during the plurality of first light emitting periods, and
the first shutter is closed during the plurality of second light emitting periods.
5. The three-dimensional image display device of claim 1 , wherein
the data voltage includes a first data voltage for the first image and a second data voltage for the second image,
a vertical blank period is between an input period of the first data voltage and an input period of the second data voltage, and
the vertical blank period overlaps at least one of the plurality of light emitting periods.
6. The three-dimensional image display device of claim 5 , wherein
the second shutter is closed during the plurality of first light emitting periods, and
the first shutter is closed during the plurality of second light emitting periods.
7. The three dimensional image display device of claim 1 , wherein
an operation frequency of at least one of the first shutter and the second shutter is greater than or equal to about 75 hertz.
8. A method for driving a three-dimensional image display device including a display panel assembly including a display panel including a plurality of pixels which alternately displays a first image and a second image and a data driver which transmits data voltages to the plurality of pixels, a backlight unit which provides light to the display panel assembly, and a shutter member including a first shutter and a second shutter, the method comprising:
applying a first data voltage for the first image to the plurality of pixels;
applying a second data voltage for the second image to the plurality of pixels;
emitting the light during a plurality of first light emitting periods, during which the first image is displayed, from the backlight unit;
emitting the light during a plurality of second light emitting periods, during which the second image is displayed, from the backlight unit;
opening the first shutter during at least two open periods, which are between neighboring second light emitting periods of the plurality of second light emitting periods and temporally spaced apart from each other, and
opening the second shutter during at least two open periods, which are between neighboring first light emitting periods of the plurality of first light emitting periods and temporally spaced apart from each other,
wherein the plurality of first light emitting periods and the plurality of second light emitting periods alternate,
the at least two open periods of the first shutter and the at least two open periods of the second shutter do not overlap each other, and
the open periods of the first shutter and the open periods of the second shutter are alternately arranged.
9. The method of claim 8 , wherein
the at least two open periods of the first shutter include:
a primary open period overlapping at least a portion of one of the plurality of first light emitting periods, which is between the neighboring second light emitting periods; and
a first additional open period between one of the plurality of first light emitting periods and one of the plurality of second light emitting periods, which are neighboring each other.
10. The method of claim 9 , wherein
a vertical blank period is between an input period of the first data voltage and an input period of the second data voltage, and
the vertical blank period overlaps at least one of plurality of first light emitting periods and the plurality of second light emitting periods.
11. The method of claim 10 , further comprising:
closing the second shutter during the plurality of first light emitting period, and
closing the first shutter during the plurality of second light emitting period.
12. The method of claim 8 , wherein
a vertical blank period is between an input period of the first data voltage and an input period of the second data voltage, and
the vertical blank period overlaps at least one of plurality of first light emitting periods and the plurality of second light emitting periods.
13. The method of claim 8 , wherein
an operation frequency of at least one of the first shutter and the second shutter is greater than or equal to about 75 hertz.