Polarity inversion driving method, driving device and liquid crystal display device
A technology of polarity inversion and driving method, which is applied to static indicators, instruments, etc., can solve problems such as brightness increase, and achieve the effect of smooth screen changes
Active Publication Date: 2016-03-30
BOE TECH GRP CO LTD +1
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Problems solved by technology
However, because the pixels are charged twice with the same polarity within one frame of POL inversion, an overshoot is formed, so that the human eye can feel the brightness increase of this frame in a static picture, that is, flicker occurs
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[0036] 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 creative efforts fall within the protection scope of the present invention.
[0037] Such as figure 2 As shown, the embodiment of the present invention provides a polarity inversion driving method for inverting the polarity of pixels on a liquid crystal panel, including:
[0038] Step 101, such as image 3 As shown, the polarity inversion reference signal POL' is generated. POL' is used to reflect the selection of the polarity of each row of pixels on the liquid crystal panel. POL' is equivalent to POL without inversion. For example, POL' ...
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A polarity inversion driving method, a driving apparatus and a liquid crystal display device, for attenuating the flickers due to POL inversion. The polarity inversion driving method is used for inversion of polarity of pixels on the liquid crystal panel, and comprises: generating a polarity inversion reference signal for reflecting selection of polarity of each row of pixels on the liquid crystal panel; generating a control signal comprising control levels generated in m frames, where m is an integer higher than or equal to two, wherein width of the control level in each of the m frames is gradually increased in chronological order to be equal to a time length of one frame; as an alternative, the width of the control level in each of the m frames is gradually decreased in chronological order from the time length of one frame to zero; and generating a polarity inversion signal from the polarity inversion reference signal and the control signal.
Description
technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a polarity inversion driving method, a driving device and a liquid crystal display device. Background technique [0002] With the development of display technology, liquid crystal display (Liquid Crystal Display, LCD) is more and more popular due to its advantages of lightness and low radiation. One of the main problems plaguing LCDs at present is the afterimage problem. Afterimages usually include surface afterimages and line afterimages. Among them, the line afterimage problem is due to the difference in pixel voltage between the two frames before and after a row in some screens, resulting in DC components, which act on the screen for a long time. produced by liquid crystal molecules. For example, if a picture is a black-and-white boundary picture, the 99th and 100th lines are white, and the 101st line is black. When radio and television transmit interlaced scan...
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IPC IPC(8): G09G3/36
CPCG09G3/3614G09G3/36G09G3/3688G09G2310/08G09G2320/0204G09G2320/0233G09G2320/0247G09G2360/16G09G2370/08
Inventor 吴行吉许益祯张亮
Owner BOE TECH GRP CO LTD