Apparatus for providing a near-IR emission suppressing/color enhancing accessory device for plasma display panels
US6067188A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 1999 |
| Grant date | May 23, 2000 |
| Priority date | — |
| Expiry date | May 13, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2229/8636
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention is directed to apparatus for enhancing the performance of visual display units which utilize plasma display panels. More specifically, the present invention provides apparatus for providing an electrical noise suppressing/chromaticity enhancing accessory device for positioning in front of the viewing surface of a plasma display panel (PDP). In its most basic embodiment, the accessory device of the present invention comprises an optically selective coating providing high photopic transmittance, continuous high electrical conductivity for RFI shielding, and reflectivity specifically within the near-IR region. It also preferably includes a multiple-dye coating for selectively absorbing IR energy emissions and selectively balancing the chromaticity of the PDP display and a plastic substrate layer to provide impact resistance. 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 maint…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.