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Plasma display device and drive method thereof

A technology of a display device and a driving method, which is applied to identification devices, static indicators, instruments, etc., and can solve problems such as flickering

Inactive Publication Date: 2009-02-18
LG ELECTRONICS(NANJING) PLASMA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Among such a plurality of picture frames, when a picture frame in which false contours appear weakly using a small number of actual gradations alternates with a picture frame in which false contours appear strongly using a large number of actual gradations, There is a problem with flickering

Method used

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  • Plasma display device and drive method thereof
  • Plasma display device and drive method thereof
  • Plasma display device and drive method thereof

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Embodiment Construction

[0039]Next, specific embodiments according to the present invention will be described with reference to the accompanying drawings.

[0040] FIG. 1 is a block diagram of a plasma display device according to an embodiment of the present invention.

[0041] As shown in FIG. 1 , the plasma display device includes: an inverse grayscale corrector 100, a half-tone device 110, a code conversion signal output device 120, a code converter 130, a subfield mapper 140, a data sequencer 150, and a plasma display panel 160.

[0042] When the plasma display panel displays a video signal equivalent to a picture frame input from the outside, the inverse grayscale corrector 100 inversely grayscale corrects the grayscale data of the video signal so that the displayed luminance value has a linear value with respect to the grayscale value .

[0043] The halftoner 110 utilizes dithering or error diffusion to halftoning the video signal of the frame corrected by the inverse grayscale corrector 100 ...

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Abstract

A plasma display device and a driving method thereof are provided to reduce flickers by gradually increasing the grayscale of an image frame with a strong pseudo-boundary. A coding conversion signal output unit(120) receives image signals from plural frames, calculates one of a pseudo-boundary possibility and a motion value between frames, and outputs a coding conversion signal based on the calculation result, when the frames are first and second state frames. A coding converter(130) outputs a table selection signal for selecting a mapping table, where the number of grayscale coding of the previous image signal is greater or smaller than the number of grayscale coding of the current frame included in the second state frames. A sub-field mapping unit(140) performs a sub-field mapping on the current frame according to the table selection signal.

Description

1. Technical field [0001] The invention relates to a plasma display device and a driving method of the plasma display device. 2. Background technology [0002] Generally, a plasma display apparatus (Plasma Display Apparatus) includes a plasma display panel in which a partition wall formed between a front panel and a rear panel forms a unit cell. Each cell is filled with charging and discharging gas such as neon (Ne), helium (He) or a mixed gas of neon and helium (Ne+He), and an inert gas containing a small amount of xenon. When discharging by high-frequency voltage, the inert gas emits vacuum ultraviolet rays (Vacuum Ultraviolet rays), so that the phosphors formed between the partition walls emit light to display the screen. Such a plasma display device has a thin and light structure, and is attracting attention as a next-generation display device. [0003] A plasma display device consists of a plurality of sub-fields with different weight values ​​to form a picture frame,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/28G09G3/20H01J17/49G09F9/313G09G3/296
CPCG09G3/296G09G2320/0247
Inventor 白承杰曹所位
Owner LG ELECTRONICS(NANJING) PLASMA CO LTD