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LED display device and driving method thereof

A technology of a display device and a driving method, which is applied to static indicators, instruments, etc., can solve problems such as display interference of low-grayscale images, image quality degradation, and afterimages of low-grayscale images, and achieve the effect of improving dynamic display quality

Active Publication Date: 2016-12-21
CHIPONE TECH BEIJINGCO LTD
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  • Claims
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Problems solved by technology

[0005] However, due to the parasitic capacitance of the row and column lines, when the high grayscale image and the low grayscale image are continuously displayed, the high grayscale image will interfere with the display of the low grayscale image, thus forming Image sticking, resulting in image quality degradation

Method used

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  • LED display device and driving method thereof
  • LED display device and driving method thereof
  • LED display device and driving method thereof

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Embodiment Construction

[0027] Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. In the various figures, identical elements are indicated with similar reference numerals. For the sake of clarity, various parts in the drawings have not been drawn to scale. Also, some well-known parts may not be shown in the drawings.

[0028] In the following, many specific details of the present invention are described, such as device structures, materials, dimensions, processing techniques and techniques, for a clearer understanding of the present invention. However, the invention may be practiced without these specific details, as will be understood by those skilled in the art.

[0029] In this application, the term "frame" refers to a picture that can be displayed separately in a video image, and the term "segmentation" refers to dividing the display period of a picture into several sub-periods for display, using the time accumulation effect of sever...

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Abstract

The invention discloses an LED display device and a driving method thereof. The LED display device comprises pixel units connected with row lines and column lines. The method comprises steps: in each row cycle, gray scale data are displayed in a group-by-group mode; and in multiple continuous groups, reset voltage is adopted to pre-charge parasitic capacitance between the row line and the column line, and thus in-group reset is carried out. The driving method of the invention adopts the in-group reset in the row cycle to lessen interference on display of a low-gray scale image by a high-gray scale image, and thus, the dynamic display quality of the image can be improved.

Description

technical field [0001] The invention belongs to the field of display technology, and more specifically relates to an LED display device and a driving method thereof. Background technique [0002] Light-emitting diodes (light-emitting diodes, LEDs) are diodes that use the principle of recombination of minority carriers and majority carriers in a PN junction to emit light. A forward voltage is applied between the PN junctions so that the diodes are turned on, and electrical energy can be converted into light energy. The LED display device is a display device using LEDs as pixel units, wherein the brightness of the LEDs corresponds to the gray scale to be displayed. [0003] LED display devices are different from liquid crystal display devices. In the liquid crystal display device, the rotation of the liquid crystal molecules changes the light transmittance of the pixel unit, so that the intensity of the light generated by the backlight source after passing through the liquid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
CPCG09G3/32G09G3/2018G09G3/3216G09G2310/0248G09G2310/0251G09G2310/061G09G2310/08G09G2370/10G09G2320/0257
Inventor 唐永生王勇高兴波刘海峰
Owner CHIPONE TECH BEIJINGCO LTD
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