Electric lamp and discharge devices – Cathode ray tube – Envelope
Patent
1996-12-23
1998-09-22
O'Shea, Sandra L.
Electric lamp and discharge devices
Cathode ray tube
Envelope
313478, 313446, 313112, 313635, 348819, 348835, 174 35MS, 315 85, H01J 1704, H01J 1749
Patent
active
058119230
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 optically enhancing
oise suppressing device for positioning in front of the viewing surface of a plasma display panel. The device also increases the impact resistance of the PDP. The device of the present invention is manufactured separately from the PDP. The device may be provided with attachment means for securing the device to the surface of the visual display unit in a position in front of the viewing surface of the PDP or may be designed to be free-hanging, i.e., suspended, or otherwise positioned in front of the viewing surface of the PDP. In its most basic embodiment, the device of the present invention comprises multiple layers of different materials including at least one plastic substrate layer for impact resistance, an optically selective coating providing high photopic transmittance, continuous high electrical conductivity for RFI shielding, and reflectivity specifically within the near-IR region, and an IR absorbing coating for absorbing IR energy emissions. In a preferred embodiment, the IR absorbing coating constitutes a dye material which is preferably selected to also be color-correcting with respect to the particular PDP.
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Product Literature for Monolithic LoE Coating Products, Cardinal IG, Aug. 1993.
Beauchamp William T.
Cumbo Michael
Hruska Curtis
Scanlon Robert
Seeser James W.
Day Michael
O'Shea Sandra L.
Optical Coating Laboratory, Inc.
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