Light filter with two conductive metal foils and plasma display using same

Abstract

The invention relates to a light filter with two conductive metal foils. One surface of a transparent substrate is plated with a film coating used for electromagnetic shielding or adhered with a copper wire mesh used for electromagnetic shielding and is provided with two conductive metal foils as extraction electrodes, one part of a first conductive metal foil adheres the film coating or the copper wire mesh along at least two corresponding sides of periphery of the substrate through the conductive glue of the metal foil while the other part is cladded on the other surface of the substrate along the edge of the substrate and is adhered with the substrate, at least one resin layer preventing the film coating or copper wire mesh from being oxygenized and corroded is compounded on the film coating or copper wire mesh, the resin layer is also compounded with the first conductive metal foil adhered on the film coating or copper wire mesh, one part of a second conductive metal foil is adhered on the edge of the resin layer through conductive glue while the other part is cladded on the other surface of the substrate along the edge of the substrate and adhered with the first conductive metal foil adhered on the other surface of the substrate. The invention can improve production efficiency and reduce scrap rate and cost.

Description

Technical field: [0001] The present invention relates to a filter of a display device, in particular to a filter with anti-electromagnetic radiation and light filtering functions in a plasma display (PDP), and to a plasma display device using the filter. Background technique: [0002] At present, the plasma display must be equipped with an optical filter to prevent electromagnetic radiation and filter light between the display and the audience. The anti-electromagnetic radiation function of the optical filter is mainly to rely on a layer of copper mesh attached to the transparent substrate to cut off electromagnetic radiation waves or It is realized by plating with silver or silver alloy conductive film that cuts off the passage of electromagnetic radiation waves, but the cut-off of electromagnetic waves on the filter plane must rely on the conductive metal foil that is in good contact with the copper mesh or the conductive coating layer as the lead-out electrode to be connec...

AI Technical Summary

Problems solved by technology

Please refer to figure 1 , figure 2 , the protective resin layer 5 is only pasted within the inner frame surface range 4 to protect the copper grid or conductive coating layer, and the resin layer is not pressed on the conductive metal foil. This design is because the effective size of the TV display is expected to be as large as possible, that is, The inner frame surface 4 is as large as possible, and the conductive metal foil is as narrow as possible, that is, the outer frame 6 is as narrow as possible. The disadvantage is that the resin layer is only pasted to protect the copper mesh or the inner frame surface range 4 of the conductive coating layer, and there must be a certain gap between the resin layer and the conductive metal foil. Leave a working gap, moisture and oxygen will oxidize and corrode the copper mesh or conductive coating layer through this gap, and quickly reduce its electromagnetic radiation shielding ability

[0003] image 3 The construction of the filter shown is in the figure 1 The improvement on the basis of the structure of the optical filter shown is also the current existing technology. The resin layer is pressed on the conductive metal foil when it is pasted, but because the width of the edge needs to be at least 6 to 10mm in contact with the TV grounding metal layer, Therefore, it cannot be fully pressed on the conductive metal foil

In this scheme, the resin is laminated on a part of the conductive metal foil, and the protection of the copper mesh and the conductive film layer has been improved, but due to the limitation of the effective size of the display, it is still not possible to paste all the reserved side widths of 6 to 10mm

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