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Plasma display and driving method thereof

A technology of plasma and driving method, which is applied in the direction of static indicators, instruments, etc., and can solve the problems of reduced contrast

Inactive Publication Date: 2009-02-11
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When performing a master reset in a completely black screen, the contrast is reduced due to the dim light generated by the weak discharge

Method used

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  • Plasma display and driving method thereof
  • Plasma display and driving method thereof
  • Plasma display and driving method thereof

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Embodiment Construction

[0017] In the following detailed description, by way of illustration only, only certain exemplary embodiments of the present invention have been shown and described. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not restrictive. Throughout the specification, like reference numerals indicate like elements. Furthermore, unless expressly stated to the contrary, the word "comprise" and its variations "comprising" or "comprising" will be understood to mean the inclusion of described elements but not the exclusion of any other elements.

[0018] Throughout the specification and the appended claims, the wall charge means charges formed on a wall (eg, an insulating layer) of a discharge cell close to an electrode, the charge being stored in the electrode. E...

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Abstract

In a plasma display and a driving method thereof, an average grayscale value of all discharge cells are detected from an input video signal, and an auxiliary reset waveform is supplied to reset periods of all subfields when the detected average grayscale value is equal or lower than a predetermined reference grayscale value. The reference grayscale value is established to be an average grayscale value of a video signal for selecting all of the discharge cells as turned-on cells in a subfield having a minimum weight value. Particularly, the reference grayscale value may be established to be 0 that is the same as an average grayscale value of a full-black video signal.

Description

technical field [0001] The invention relates to a plasma display and its driving method. Background technique [0002] A plasma display panel (PDP) is a flat panel display that displays characters or images using plasma generated by gas discharge. It includes, by size, more than a few tens to several million pixels arranged in a rectangular pattern. [0003] One frame (1TV field) of such a plasma display is divided into a plurality of subfields with weight values, and each subfield includes a reset period, an address period, and a sustain period. [0004] The reset period is used to initialize the state of each discharge cell to facilitate addressing operations on the discharge cells, and the address period is used to perform addressing operations to select turned-on / turned-off cells ( That is, the cell to be turned on / off). The sustain period is used to induce a discharge for displaying an image on the addressed cell. [0005] In a conventional plasma display, a main re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/28G09G3/288G09G3/20G09G3/291G09G3/292G09G3/296G09G3/298
CPCG09G2360/16G09G2330/021G09G2310/066G09G2320/0238G09G3/2927G09G2310/063G09G3/2022G09G3/291G09G3/296
Inventor 金志勋
Owner SAMSUNG SDI CO LTD