Liquid crystal display and driving method thereof

Active Publication Date: 2016-06-30
SAMSUNG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0011]Exemplary embodiments of the present invention present invention provide a liquid crystal display and a driving method having advantages of improving an AC afterimage at room temperature and at a high temperature.

Problems solved by technology

As a result, a flicker defect due to a luminance difference occurs, and there is a problem in that the liquid crystal layer is influenced by a residual DC voltage to form an afterimage.
In order to solve a DC afterimage due to the residual DC voltage and the like, an asymmetrical gamma correction method in which the data voltage is compensated for each gray level and the like have been attempted, but separately, an AC afterimage then becomes a problem.

Method used

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  • Liquid crystal display and driving method thereof
  • Liquid crystal display and driving method thereof
  • Liquid crystal display and driving method thereof

Examples

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Example

[0030]In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of various exemplary embodiments. It is apparent, however, that various exemplary embodiments may be practiced without these specific details or with one or more equivalent arrangements. In other instances, well-known structures and devices are shown in block diagram form in order to avoid unnecessarily obscuring various exemplary embodiments.

[0031]In the accompanying figures, the size and relative sizes of layers, films, panels, regions, etc., may be exaggerated for clarity and descriptive purposes. Also, like reference numerals denote like elements.

[0032]When an element or layer is referred to as being “on,”“connected to,” or “coupled to” another element or layer, it may be directly on, connected to, or coupled to the other element or layer or intervening elements or layers may be present. When, however, an element or layer is refer

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Abstract

Among data voltages applied to a plurality of pixels on a display panel, a first data voltage is shifted from a first original data voltage by a first value, a second data voltage is shifted from a second original data voltage by a second value, and a third data voltage is shifted from a third original data voltage by a third value to compensate for AC and DC afterimages. A common voltage generator provides an optimal common voltage for the third data voltage when the temperature of the liquid crystal panel assembly is lower than a reference temperature and provides an optimal common voltage for the first data voltage or the second data voltage when the temperature of the liquid crystal panel assembly is higher than or equal to the reference temperature. The first, second, and third values correspond to respective kickback voltages of the respective gray level data voltages.

Description

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Claims

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Application Information

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Owner SAMSUNG DISPLAY CO LTD
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