Methods and apparatus for providing a near-IR emission suppressi

Optical: systems and elements – Having significant infrared or ultraviolet property

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Details

313479, 313478, 313446, H01J 1704, H01J 1749

Patent

active

060847050

ABSTRACT:
The present invention is directed to methods and apparatus for enhancing the performance of visual display units which utilize plasma display panels. More specifically, the present invention provides methods and apparatus for providing an electrical noise suppressing/chromaticity enhancing accessory device for positioning in front of the viewing surface of a plasma display panel. In its most basic embodiment, the accessory device of the present invention comprises a first and a second rigid substrate laminated together by a laminating layer; an optically selective coating providing high photopic transmittance, continuous high electrical conductivity for RFI shielding, and reflectivity specifically within the near-IR region that is mechanically protected by being sandwiched between one rigid substrate and the laminating layer; and, a multiple-dye coating for selectively absorbing IR energy emissions and selectively balancing the chromaticity of the PDP display. The combination of the IR absorption and color-correction due to the multiple-dye coating and the near-IR reflectivity due to the optically selective coating surprisingly results in very good suppression of IR emissions from the PDP within the spectral range of about 800 to about 2500 nm and chromaticity enhancement while simultaneously maintaining good photopic transmittance.

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