Liquid crystal display device and driving method thereof
First Claim
1. A liquid crystal display device, comprising:
- a liquid crystal panel having first data lines crossing gate lines on a first region of the liquid crystal panel and second data lines crossing the gate lines on a second region of the liquid crystal panel;
a data converter for converting a first video data having a first frame frequency into a second video data having a second frame frequency, which is higher than the first frame frequency;
a backlight unit having a first lamp group with at least two lamps for respectively irradiating light onto sub-regions of the first region and a second lamp group with at least two lamps respectively irradiating light on sub-regions of the second region; and
a driver for driving the gate lines, the first data lines and the second data lines in accordance with the second video data and for driving the first and second lamp groups at the second frame frequency so that the lamps of the first lamp group are sequentially turned on and off in synchronization with the lamps of the second lamp group.
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Accused Products
Abstract
A liquid crystal display device includes a liquid crystal panel having first data lines crossing gate lines on a first region of the liquid crystal panel and second data lines crossing the gate lines on a second region of the liquid crystal panel; a data converter for converting a first video data having a first frame frequency into a second video data having a second frame frequency, which is higher than the first frame frequency; a backlight unit having a first lamp group with at least two lamps for respectively irradiating light onto sub-regions of the first region and a second lamp group with at least two lamps respectively irradiating light on sub-regions of the second region; and a driver for driving the gate lines, the first data lines and the second data lines in accordance with the second video data and for driving the first and second lamp groups at the second frame frequency so that the lamps of the first lamp group are sequentially turned on and off in synchronization with the lamps of the second lamp group.
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Citations
40 Claims
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1. A liquid crystal display device, comprising:
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a liquid crystal panel having first data lines crossing gate lines on a first region of the liquid crystal panel and second data lines crossing the gate lines on a second region of the liquid crystal panel; a data converter for converting a first video data having a first frame frequency into a second video data having a second frame frequency, which is higher than the first frame frequency; a backlight unit having a first lamp group with at least two lamps for respectively irradiating light onto sub-regions of the first region and a second lamp group with at least two lamps respectively irradiating light on sub-regions of the second region; and a driver for driving the gate lines, the first data lines and the second data lines in accordance with the second video data and for driving the first and second lamp groups at the second frame frequency so that the lamps of the first lamp group are sequentially turned on and off in synchronization with the lamps of the second lamp group. - View Dependent Claims (2, 3, 4, 5)
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6. A liquid crystal display device, comprising:
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a liquid crystal panel having gate lines and data lines crossing each other; a backlight unit having a first lamp group with at least two lamps for divisionally irradiating light on a first region of the liquid crystal panel and a second lamp group with at least two lamps divisionally irradiating light on a second region of the liquid crystal panel; and a driver for driving the gate lines and data lines in accordance with a video data having a first frame frequency and for controlling the first and second lamp groups to be simultaneously driven at a second frame frequency higher than the first frame frequency so that the lamps of the first lamp group are sequentially turned on and off in synchronization with the lamps of the second lamp group. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A liquid crystal display device, comprising:
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a liquid crystal panel having first data lines crossing gate lines on a first region of the liquid crystal panel and second data lines crossing the gate lines on a second region of the liquid crystal panel; a backlight unit having a first lamp group with at least two lamp for respectively irradiating light onto sub-regions of the first region and a second lamp group with at least two lamps respectively irradiating light on sub-regions of the second region; and a driver for driving the gate lines and the data lines to simultaneously write data voltages of a video data to liquid crystal cells of the first region and liquid crystal cells of the second region in each frame in line by line fashion, and for driving the first and second lamp groups so that the at least two lamps of the first lamp group are sequentially turned on and off once in synchronization with the at least two lamps of the second lamp group. - View Dependent Claims (17, 18, 19, 20)
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21. A liquid crystal display device, comprising:
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a liquid crystal panel having first data lines crossing gate lines on a first region of the liquid crystal panel and second data lines crossing the gate lines on a second region of the liquid crystal panel; a backlight unit having a first lamp group with at least two lamps for respectively irradiating light onto sub-regions of the first region and a second lamp group with at least two lamps respectively irradiating light on sub-regions of the second region; and a driver for operating the gate lines and the data lines to simultaneously write data voltages of a video data to liquid crystal cells of the first region and liquid crystal cells of the second region in each frame in a line by line manner, and for driving the first and second lamp groups so that the lamps of the first and second lamp groups are turned on and off at time when an alignment saturation period elapses after the data voltages are written to liquid crystal cells of the corresponding sub-regions. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A liquid crystal display device, comprising:
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a liquid crystal panel having gate lines and data lines crossing each other; a backlight unit having a first lamp group with at least two lamps for divisionally irradiating light on a first region of the liquid crystal panel and a second lamp group with at least two lamps for divisionally irradiating light on a second region of the liquid crystal panel; and a driver for driving the gate lines and data lines to sequentially write data voltages of a video data to liquid crystal cells of the liquid crystal panel in each frame in line by line manner, and for controlling the first and second lamp groups to be sequentially turned on and off once in synchronization with each other. - View Dependent Claims (28, 29, 30)
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31. A method of driving a liquid crystal display device with a liquid crystal panel having first data lines crossing gate lines on a first region of the liquid crystal panel, and second data lines crossing the gate lines on a second region of the liquid crystal panel, comprising:
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converting a first video data having a first frame frequency into a second video data having a second frame frequency higher than the first frame frequency; driving the gate lines, the first and second data lines in accordance with the second video data; and controlling the first and second lamp groups to turn-on and turn-off simultaneously at the second frame frequency, the first lamp groups having at least two lamps for a first region and the second lamp group having at least two lamps for the second region. - View Dependent Claims (32)
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33. A method of driving a liquid crystal display device with a liquid crystal panel having gate lines and data lines crossing each other, comprising:
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driving the gate lines and data lines in accordance with a video data having a first frame frequency; and controlling the first and second lamp groups to turn-on and turn-off simultaneously at a second frame frequency higher than the first frame frequency, the first lamp group having at least two lamps for a first region of the liquid crystal panel and the second lamp group having at least two lamps for a second region of the liquid crystal panel. - View Dependent Claims (34)
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35. The method according to claim 35, wherein the gate lines include:
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first gate lines crossing the data lines on a third region occupying parts of the first and second regions; and second gate lines crossing the data lines on a fourth region occupying remaining parts of the first and second regions.
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36. A method for controlling a liquid crystal display device having a liquid crystal panel with first data lines crossing gate lines on a first region and second data lines crossing the gate lines on a second region, at least two first lamps partially corresponding to the first region of the liquid crystal panel, and at least two second lamps partially corresponding to the second region of the liquid crystal panel, the method comprising:
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driving the gate lines and data lines to simultaneously write data voltages of a video data to liquid crystal cells of the first region and liquid crystal cells of the second region in line by line fashion; and turning on and off once the first lamps together with the second lamps by one pair at a time. - View Dependent Claims (37)
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38. A method for controlling a liquid crystal display device having a liquid crystal panel with first data lines crossing gate lines on a first region and second data lines crossing the gate lines on a second region, at least two first lamps partially corresponding to the first region of the liquid crystal panel, and at least two second lamps partially corresponding to the second region of the liquid crystal panel, the method comprising:
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driving the gate lines and data lines to simultaneously write data voltages of a video data to liquid crystal cells of the first region and liquid crystal cells of the second region in a line by line manner; and driving the first and second lamps so that the lamps of the first and second lamps are turned on and off at time when an alignment saturation period elapses after the data voltages are written to liquid crystal cells on the liquid crystal panel. - View Dependent Claims (39, 40)
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Specification