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Plasma display

A display device, plasma technology, applied in identification devices, optical/shielding devices, televisions, etc., can solve problems such as noise

Inactive Publication Date: 2004-05-12
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Especially in a plasma display device having a power supply circuit using a capacitive input type AC-DC rectifier circuit, there is a problem that this noise is noticeably generated

Method used

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Embodiment Construction

[0023] Hereinafter, a plasma display device according to an embodiment of the present invention will be described with reference to FIGS. 1 to 8 .

[0024] First, the overall configuration of the plasma display device will be described with reference to FIG. 1 . In FIG. 1, the box housing the panel 10 as shown in FIG. 8 consists of a front frame 11 made of resin, metal, etc., and a rear cover that is a magnetic metal cover mainly composed of iron or the like. 12 structure, the front glass 13 made of glass or the like which has both the optical filter and the protective function of the panel 10 is disposed in the opening of the front frame 11. In addition, in order to suppress unnecessary radiation of electromagnetic waves, silver vapor deposition or mesh-shaped metal members are provided on the front glass 13 , for example. Furthermore, the rear cover 12 is provided with a plurality of ventilation holes 12 a for releasing heat generated by the panel 10 and the like to the out...

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PUM

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Abstract

The plasma display apparatus disclosed comprises: a noise filter circuit, having noise filter (253), connected to an AC supply disposed at the back side of the plasma display panel; and a back cover (12) composed of a magnetic metal material disposed at the back side of the plasma display panel to cover the noise filter circuit, wherein magnetic lines of force in the core, made of magnetic material and consisting the noise filter (253), direct approximately identical to the in-plane direction of the back cover (12). The configuration can eliminate audible noises because the amount of leakage flux passing through the back cover is reduced.

Description

technical field [0001] The present invention relates to a plasma display device known as a large screen (screen), thin and light-weight display device. Background technique [0002] In recent years, plasma display devices have been attracting attention as display panels (thin display devices) with excellent visibility, and their resolution has become higher and their screens have become larger. [0003] In this plasma display device, it is roughly divided into AC type and DC type according to the driving method, and is divided into surface discharge type and opposite discharge type according to the discharge form. From the viewpoint of simplicity, in practice, AC type and surface discharge type plasma display devices are the mainstream. [0004] First, the structure of the plasma display panel in the plasma display device will be described with reference to FIG. 8 . As shown in FIG. 8 , on a transparent front-side substrate 1 such as a glass substrate, stripe-shaped displa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/66G09F9/00G09F9/313H01J11/44H01J17/34H01J17/49H04N5/645
CPCH05K5/02G09F9/313H01J11/44H04N5/645
Inventor 川口隆夫藤村敏夫
Owner PANASONIC CORP
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