Electromagnetic Wave Shielding Device

• US 20080245563A1
• Filed: 07/25/2005
• Published: 10/09/2008
• Est. Priority Date: 07/27/2004
• Status: Abandoned Application

• Current Assignee: Dai Nippon Printing Company Limited
• Original Assignee: Dai Nippon Printing Company Limited
• Inventors: Fujii, Kazuhito, Arakawa, Fumihiro, Naito, Nobuo
• Application Number:
  US11/632,853
• Publication Number:
  US 20080245563A1
• Time in Patent Office: Days
• US Class Current: 174/392
• CPC Class Codes: H05K 9/0096 for television displays, e.g. plasma display panel

Abstract

An electromagnetic wave shielding layer 1 comprises a transparent substrate 11, an adhesive layer 13 which is provided as needed, an electromagnetic wave shielding layer 15, and a transparent resin layer 17. The electromagnetic shielding layer 15 includes a mesh portion 103 facing a screen portion 100 of an image displaying device, a transparent resin layer anchoring portion 105 surrounding a periphery of the mesh portion 103 and including openings 105a having an opening ratio lower than that of openings 103a of the mesh portion 103, and a frame portion 107 surrounding an outer periphery of the transparent resin layer anchoring portion 105 and not having openings. The transparent resin layer 17 is provided such that it covers the surfaces of the mesh portion 103 and the transparent resin layer anchoring portion 105 and fills the openings 103a, 105a.

Claims

1. An electromagnetic wave shielding device disposed adjacent to the front surface of an image displaying device, comprising:

a transparent substrate;

an electromagnetic wave shielding layer provided on one surface of the transparent substrate and formed of an electrically conductive material; and

a transparent resin layer provided on the electromagnetic wave shielding layer;

wherein the electromagnetic wave shielding layer includes a mesh portion with a shape corresponding to a screen portion of the image displaying device, including openings arranged in large numbers, a transparent resin layer anchoring portion surrounding the mesh portion, including openings arranged in large numbers and having an opening ratio lower than that of the openings of the mesh portion, and a flat frame portion surrounding the transparent resin layer anchoring portion and not having openings; and

wherein the transparent resin layer is provided such that it extends over the surface of the mesh portion as well as over the surface of the transparent resin layer anchoring portion.

2. The electromagnetic wave shielding device according to claim 1, wherein

the transparent resin layer extends over the whole surface of the mesh portion as well as over the whole surface of the transparent resin layer anchoring portion and also covers an inner end portion of the frame portion.

3. The electromagnetic wave shielding device according to claim 1, wherein

the transparent resin layer extends over the whole surface of the mesh portion as well as over the whole surface of the transparent resin layer anchoring portion and terminates at the outer end portion of the transparent resin layer anchoring portion.

4. The electromagnetic wave shielding device according to claim 1, wherein

the transparent resin layer is provided to cover the whole surface of the mesh portion and an inner end portion of the transparent resin layer anchoring portion.

5. The electromagnetic wave shielding device according to claim 4, wherein the transparent resin layer extends over the whole surface of the mesh portion up to a middle portion of the transparent resin layer anchoring portion, but does not cover the outer periphery of the transparent resin layer anchoring portion.

6. The electromagnetic wave shielding device according to claim 1, wherein an adhesive layer is interposed between the transparent substrate and the electromagnetic wave shielding layer.