Plasma display device and driving method thereof
AssigneeFujitsu Hitachi Plasma Display Limited
InventorsIsao Furukawa, Makoto Onozawa, Tomokatsu Kishi, Takashi Sasaki
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Abstract
In conventional plasma display devices, reset by obtuse waves has been performed since discharge intensity becomes higher and background light emission is increased when reset by rectangular waves is performed. However, further improvement of the contrast to improve the image quality has been demanded. The present invention provides a driving method of a plasma display device using obtuse-wave reset in which sustain time of an achieved potential of the obtuse-wave reset is controlled in accordance with a display ratio of a video signal.
Claims10
A driving method of a plasma display device using obtuse-wave reset,
- wherein sustain time of an achieved potential of said obtuse-wave reset is controlled in accordance with a display ratio of a video signal.
A plasma display device comprising:
- a plasma display panel;
- a display ratio detecting circuit for detecting a display ratio of a video signal given to the plasma display panel;
- a reset circuit for resetting said plasma display panel by obtuse-wave reset;
- and
- an achieved potential sustain time setting circuit for controlling sustain time of an achieved potential of said obtuse-wave reset in accordance with the display ratio of said video signal,
- wherein the sustain time of the achieved potential of said obtuse-wave reset is controlled.
Dependencies are inferred from the claim text.