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Light filter with electromagnetic shielding function and display using same

A technology of electromagnetic shielding and optical filters, applied in the field of optical filters, can solve the problems of disclosure, lack of formulas and methods, etc., and achieve the effects of improving contrast, improving viewing image quality, and good electromagnetic shielding ability

Inactive Publication Date: 2011-07-06
甘国工
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The patent discloses high-refractive-index metal oxide / low-refractive-index metal oxide / silver or silver alloy / low-refractive-index metal oxide / high-refractive-index metal oxide, and this symmetrical structure overlaps 3 to 4 times to form 13 layers Or a 17-layer film with the function of an electromagnetic shielding conductive layer, discloses a scheme for a yellow characteristic light-absorbing dye resin layer that has a maximum absorption peak at a wavelength of 590nm to 610nm, and also discloses that it is in contact with the coating layer as an extraction electrode The metal thin film is specifically the conductive aluminum foil bonded in the embodiment, but it is not disclosed as the silver or silver-clad copper micron material as the main substrate, the resin binder as the continuum material, and the technical scheme of making the conductive electrode by printing and other methods, and more There is no disclosure of the formula and method, and the evaluation of the contribution of the electromagnetic shielding conductive film layer formed by the method combined with the coating method to the electromagnetic shielding ability of the plasma display

Method used

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  • Light filter with electromagnetic shielding function and display using same
  • Light filter with electromagnetic shielding function and display using same
  • Light filter with electromagnetic shielding function and display using same

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] figure 1 , figure 2 Figure 1 of this embodiment is given, see figure 1 , No. 1 is a 50″ plasma display screen, and No. 3 is a PET film with a thickness of 125 μm. The surface of film 3 is coated with a high refractive index metal oxide film layer TiO by magnetron sputtering. 2 (or Nb 2 o 5 ) / low refractive index metal oxide film layer AZOY / silver layer Ag / low refractive index metal oxide film layer AZOY / high refractive index metal oxide film layer TiO 2 (or Nb 2 o 5 ) 13 layers of conductive coating layer 4 with electromagnetic shielding function formed by overlapping symmetrical structures. For the structure of the conductive coating layer, see figure 2 (It can also be plated with 4 overlapping conductive films, that is, 17 layers, see image 3 ), the materials and film thickness parameters of 13 or 17 conductive coating layers are shown in Table 2. The film is cured by UV light curing method. The surface of the cured film has a hardness greater than 2H in th...

Embodiment 2

[0027] Figure 4 For embodiment 2 figure, see Figure 4 , 1 is a 50" plasma display screen, 3 is a 150 μm thick PET film, 4 is 4 overlapping layers of 17 layers of electromagnetic shielding conductive coating layers deposited on the PET film by magnetron sputtering (see the structure of the coating layer and the thickness of each layer) image 3 ), 2 is the pressure-sensitive adhesive mixed with light-absorbing dyes, 6 is the lead-out grounding conductive film layer, 7 is the hardened (HC) acrylic resin layer made on the PET film facing the audience, and the conductive coating layer 4 of the optical filter Facing the display fits snugly.

[0028] This embodiment is different from Embodiment 1 in that the electromagnetic shielding conductive coating layer is bonded to the display screen 1 with a pressure-sensitive adhesive 2. This solution has better protection against oxidation and chlorine for the electromagnetic shielding conductive coating layer. The only protection is th...

Embodiment 3

[0030] Figure 5 For embodiment 3 figure, see Figure 5 , 1 is a 50" plasma display screen, 2 is a pressure-sensitive adhesive layer of miscible dyes, 3 is a 125μm thick PET film, 4 is an electromagnetic shielding conductive film with 4 overlapping layers of 17-layer films sputtered on the PET film 3 Coating, its structure and film thickness refer to image 3 , 9 is a PET film with a thickness of 100 μm, and 10 is a hardened acrylate coating made on the PET film 9 by a coating method or acrylic resin with micron-sized SiO 2 Or ITO forms the cured AG coating, or coats the hardened anti-reflection and anti-reflection resin layer whose refractive index is lower than 1.5 and is preferably less than 1.4 after coating, and is covered with pressure-sensitive adhesive 8 between the PET film 3 and the PET film 9 Together, the dyes of this scheme are miscible in the pressure-sensitive adhesive 2. The plane resistance of this filter is 1.0±0.1, the light transmittance T=43%, and the e...

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Abstract

The invention discloses a light filter with electromagnetic shielding function, comprising a flexible transparent resin substrate; a conductive film coating layer, a yellow characteristic light absorption dye resin film layer which has maximal absorption peaks for light wavelengths of 570nm-610nm, and a resin bonding layer which is used for integrally bonding the flexible transparent resin substrate with a display are coated on the substrate; the conductive film coating layer has a symmetric structure of high-refractive index metallic oxide film layer / low-refractive index metallic oxide film layer / silver or silver alloy film layer / low-refractive index metallic oxide film layer / high-refractive index metallic oxide film layer, and is overlapped for 3 to 4 times to form 13 or 17 layers of films with electromagnetic shielding conductive function; and conductive thin film layers with silver and / or silver coated copper micron conductive materials taken as substrates are printed or sprayed around the conductive thin film layers and are conductively grounded to form the shielding function. Compared with the glass plate type light filter plates, the light filter has lower refractive index, can improve the contrast ratio and can reduce the thicknesses of plasma displays. The invention also provides a plasma display using the light filter with electromagnetic shielding function.

Description

Technical field: [0001] The invention relates to the optical filter in the plasma display device, and relates to the optical filter in the plasma display (PDP) with the functions of preventing electromagnetic radiation and filtering light. Background technique: [0002] The electromagnetic radiation shielding function of the current PDP filter is to rely on the copper mesh laid on the plane or the optical combination of ITO and silver and silver alloy layered on the plane to form a transparent conductive film layer to shield the electromagnetic radiation wave. Lay or coat the color film with 596nm yellow neon characteristic light-absorbing dye and near-infrared light-absorbing dye on the plane, mainly by combining the two to form electromagnetic shielding function, yellow characteristic light absorption and near-infrared light absorption function , and adjust the color temperature to achieve a certain light transmittance index to achieve the filtering function. [0003] The...

Claims

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Application Information

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IPC IPC(8): G02B5/20G02B1/10H05K9/00H01J17/49G02B1/16
Inventor 甘国工
Owner 甘国工