A liquid crystal display device and its driving method
A liquid crystal display device, a unified technology, applied to static indicators, instruments, etc., can solve problems such as differences between optimal public voltages, differences in pixel charging time, and effects on the display quality of liquid crystal display devices
Active Publication Date: 2018-12-21
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology
Due to the existence of the delay time, there are differences in the charging time of pixels in different regions, resulting in differences in the optimal common voltages corresponding to different regions.
Therefore, if the same common voltage is provided to all pixel regions, the liquid crystal display device may have serious flicker defects due to the large difference between the optimal common voltages of different regions, thereby affecting the display quality of the liquid crystal display device
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[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0033] For ease of description, spatially relative terms such as "under", "beneath", "below", "above", "on" and other spatially relative terms may be used herein to describe an element as shown in the drawings Or the relationship of a feature to another element or feature(s). It will be understood that when an element or layer is referred to as being "on," "connected to," or "coupled to" another element or layer, it can be directly on, directly on, or directly...
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The embodiment of the invention provides a liquid crystal display device comprising a common electrode layer and a common electrode control circuit. The common electrode layer comprises multiple common electrode areas. The common electrode control circuit is electrically connected with each common electrode area and used for detecting the optimal common voltage of each common electrode area and calculating the difference value of the optimal common voltage of the multiple common electrode areas. If the difference value of the optimal common voltage of at least two common electrode areas is greater than a preset difference value, the common voltage is independently provided to each common electrode area. If the difference value of the optimal common voltage of the multiple two common electrode areas is less than or equal to the preset difference value, the unified common voltage is provided to the multiple common electrode areas. Besides, the embodiment of the invention also provides a driving method of the liquid crystal display device. According to the liquid crystal display device, the problem of flicking of display frames caused by deviation of common voltage can be improved.
Description
technical field [0001] The invention relates to the field of liquid crystal display, in particular to a liquid crystal display device and a driving method thereof. Background technique [0002] With the continuous development of liquid crystal display technology, small and medium-sized mobile phones and tablet computers are becoming more and more popular, and people's requirements for display effects are also getting higher and higher. In the driving process of the liquid crystal display device, due to the different delays of the drive signal reaching each pixel region of the liquid crystal display panel, the charging conditions of the pixels in different pixel regions are different, and the optimal common voltages corresponding to different pixel regions are different. has a difference. Such as figure 1 As shown, a full high definition (Full High Definition, FHD) liquid crystal display device with a resolution of 1920*1080 is taken as an example, and an interleaved drivin...
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IPC IPC(8): G09G3/36
CPCG09G3/3696
Inventor 纪飞林周锦杰谭小平
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD