Electromagnetic wave shielding filter

• US 7,732,038 B2
• Filed: 07/08/2005
• Issued: 06/08/2010
• Est. Priority Date: 07/12/2004
• Status: Expired due to Fees

• Current Assignee: Dai Nippon Printing Company Limited
• Original Assignee: Dai Nippon Printing Company Limited
• Inventors: Arakawa, Fumihiro, Naito, Nobuo
• Primary Examiner(s): Watkins, III; William P
• Application Number:
  US11/597,744
• Publication Number:
  US 20070231587A1
• Time in Patent Office: 1,796 Days
• Field of Search: 428/138, 174/392, 174/389
• US Class Current: 428/138
• CPC Class Codes: H01J 11/10 AC-PDPs with at least one main electrode being out of contact with the plasma
• CPC Class Codes: H01J 11/44 Optical arrangements or shielding arrangements, e.g. filters, black matrices, light reflecting means or electromagnetic shielding means
• CPC Class Codes: H01J 2211/446 Electromagnetic shielding means; Antistatic means
• CPC Class Codes: H01J 2329/869 Electromagnetic shielding
• CPC Class Codes: H01J 29/867 Means associated with the outside of the vessel for shielding, e.g. magnetic shields screens for shielding inside the vessel H01J29/06; magnetic shielding in general H05K9/00
• CPC Class Codes: H05K 9/0096 for television displays, e.g. plasma display panel
• CPC Class Codes: Y10T 428/24331 including nonapertured component
• CPC Class Codes: Y10T 428/31504 Composite [nonstructural laminate]
• CPC Class Codes: Y10T 428/31678 Of metal

Abstract

An electromagnetic wave shielding filter 10 comprises a transparent substrate 1, and a mesh layer 3 containing an electrically conductive layer 2, formed on the transparent substrate 1 with a transparent adhesive layer 9. A transparent colored resin layer 4 containing a coloring agent is formed on the mesh layer 3, with a transparent barrier layer 5 interposed between the two layers. An anticorrosive layer 6 and a blackening layer 7 are formed on the electrically conductive layer 2 in the mesh layer 3. The transparent colored resin layer 4 also serves as an adhesive layer, and a functional layer 8, such as an optical filter, a protective sheet, or a display front substrate, is further laminated to the transparent colored resin layer 4.

Claims

1. An electromagnetic wave shielding filter comprising:

a transparent substrate,

a transparent adhesive layer made from a urethane adhesive, formed on the transparent substrate,

a mesh layer in the form of a mesh, containing at least an electrically conductive layer made from a metal, formed on the transparent adhesive layer, and

a transparent colored resin layer containing a coloring agent and an adhesive, formed on the mesh layer,

a transparent barrier layer for separating the mesh layer and the transparent colored resin layer from each other, made from a non-urethane, non-adhesive solid resin, being present between the mesh layer and the transparent colored resin layer.

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

the mesh layer contains an anticorrosive layer formed at least on one side of the electrically conductive layer.

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

the mesh layer contains a blackening layer formed at least on one side of the electrically conductive layer.

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

the mesh layer contains a blackening layer, the electrically conductive layer, and an anticorrosive layer that are situated in this order, with the blackening layer on the transparent substrate side.

5. The electromagnetic wave shielding filter according to claim 1, wherein

the mesh layer contains the electrically conductive layer, a blackening layer, and an anticorrosive layer that are situated in this order, with the electrically conductive layer on the transparent substrate side.

6. The electromagnetic wave shielding filter according to claim 1, wherein

the mesh layer contains a first anticorrosive layer, a blackening layer, the electrically conductive layer, a blackening layer, and a second anticorrosive layer that are situated in this order, with the first anticorrosive layer on the transparent substrate side.

7. The electromagnetic wave shielding filter according to claim 1, wherein

the mesh layer contains a first anticorrosive layer, the electrically conductive layer, a blackening layer, and a second anticorrosive layer that are situated in this order, with the first anticorrosive layer on the transparent substrate side.

8. The electromagnetic wave shielding filter according to claim 1, wherein

the mesh layer contains the electrically conductive layer, and a blackening layer that covers a face of the electrically conductive layer on the side opposite to the transparent substrate side and the side faces of the electrically conductive layer.

9. The electromagnetic wave shielding filter according to claim 1, wherein

the transparent colored resin layer functions as an adhesive layer, and a functional layer is laminated to the transparent colored resin layer.

10. The electromagnetic wave shielding filter according to claim 1, further comprising:

a transparent adhesive layer between the transparent substrate and the mesh layer.

11. The electromagnetic wave shielding filter according to claim 1, wherein

the mesh layer contains a blackening layer formed, either directly or through an anticorrosive layer, on one or more faces selected from a face of the electrically conductive layer on the transparent substrate side, a face of the electrically conductive layer on the side opposite to the transparent substrate side, and the side faces of the electrically conductive layer.