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Driving method of liquid crystal display device

A technology of a liquid crystal display device and a driving method, which can be applied to static indicators, nonlinear optics, instruments, etc., and can solve problems such as poor brightness

Active Publication Date: 2013-05-01
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, since black data BD and image data ID with opposite polarities are input in the middle / lower part of the display panel, there is a difference in luminance due to "weak" charging of image data ID

Method used

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  • Driving method of liquid crystal display device
  • Driving method of liquid crystal display device
  • Driving method of liquid crystal display device

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Embodiment Construction

[0033] Hereinafter, an embodiment of the present disclosure will be described in detail, examples of which are illustrated in the accompanying drawings.

[0034] Figure 6 is a timing diagram of input data for explaining a black data insertion method of a liquid crystal display device according to an exemplary embodiment of the present invention. Figure 6It is shown that in the liquid crystal display device driven by the black data insertion method of supplying an additional gate drive signal for input image data ID and black data BD, the (n-1)th frame and the nth frame are supplied to the liquid crystal Input timing of image data ID and black data BD of the board.

[0035] exist Figure 6 , image data ID with positive (+) polarity is input in the (n-1)th frame, and then image data ID with negative (-) polarity is input in the nth frame due to polarity inversion. The black data BD with negative (-) polarity is input during the period t4 of the (n-1)th frame, and then the b...

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Abstract

A driving method of a liquid crystal display device includes steps of providing image data to a liquid crystal panel each frame, providing an image-data gate driving signal to the liquid crystal panel and inputting the image data to the liquid crystal panel, providing black data to the liquid crystal panel, providing a black-data gate driving signal to the liquid crystal panel and inputting the black data to the liquid crystal panel, and delaying the black-data gate driving signal when each frame starts.

Description

technical field [0001] The present invention relates to a driving method of a liquid crystal display device, and more particularly, to a black-data insertion driving method of a liquid crystal display device with improved luminance difference in upper and middle / lower parts of a display panel. Background technique [0002] Recently, in order to improve image quality and visual characteristics, various liquid crystal display (LCD) device driving methods have been proposed, and a black data insertion driving method has been used as one of these driving methods. [0003] figure 1 is a view schematically illustrating an LCD device for a black data insertion driving method according to the related art. figure 1 A liquid crystal panel 10, a timing control unit 20, a source driving unit 30, and a gate driving unit 40 are shown. [0004] refer to figure 2 , which is schematically exemplified by figure 1 The liquid crystal panel 10 includes gate lines GL1 to GLn and data lines D...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36
CPCG09G2310/061G09G3/3648G09G2320/0233G09G3/3614G09G2310/062G09G3/36G09G3/20G02F1/133
Inventor 赵弈力柳昌逸金海烈
Owner LG DISPLAY CO LTD