EP0712148A2
Expired / Lapsed
EP
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Plasma display system
Assignee: Hitachi Ltd
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Filing: 1995-10-27
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Granted: —
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Expires: 2015-10-27
Abstract
Abstract A plasma display panel for plasma display system provides excellent optical characteristics, including a color purity, contrast, and luminance, of a plasma display system. Barrier ribs 2 forming a cell S has wavelength-selective reflective filters 8 for reflecting only a light of wavelength needed to display and absorbing the other lights coated thereon. The wavelength-selective reflective filters 8 have phosphors 7 coated thereon. A color filter 4 is inserted between a first face panel 3 and second front glass panel 6 for feeding out the light in a sandwich state.
Inventors
- 👤 Michitaka Ohsawa
- 👤 Hiroshi 523 Hachimanyama-apato Ohtaka
- 👤 Keirou Shinkawa
- 👤 Ken Hashimoto
- 👤 Nobuyuki 101 Daiichi-yoshihara-haitsu Ushifusa
- 👤 Seiichi Tsuchida
- 👤 Tatsuro Kawamura
- 👤 Teruo Takai
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 07:13
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/02; H01J5/16; H01J11/00; H01J11/10; H01J11/12; H01J11/20; H01J11/34; H01J11/44; H01J2211/00; H01J2211/20; H01J2211/34; H01J2211/44; H01J2211/442; H01J2211/444
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
77 words
A plasma display system comprising a multiple of cells for light emitting areas separated spatially for color lights wherein phosphors in the cells are excited by energy of ultraviolet ray to obtain visible lights, each cell comprising: filters for effectively reflecting color lights emitted by the phosphors, the filters being interleaved between surfaces of barrier ribs for spatially separating the cells and/or a bottom of each cell and the phosphors coated to the surfaces and/or the bottom.
Claim 2
Dependent Claim
81 words
A plasma display system comprising a multiple of cells for light emitting areas separated spatially for color lights wherein phosphors in the cells are excited by energy of ultraviolet ray to obtain visible lights, each cell comprising: reflective filters for the emitted lights, the reflective filters being formed by way of mixing substances of effectively reflecting the color lights emitted by the phosphors in surfaces of materials forming barrier ribs for spatially separating the cells and/or a bottom of each cell.
Claim 3
Dependent Claim
100 words
A plasma display system comprising a multiple of cells for light emitting areas separated spatially for color lights wherein phosphors in the cells are excited by energy of ultraviolet ray to obtain visible lights, each cell comprising: multi-layer interference film filters formed of a multiple of thin films of different refraction factors, the interference film filters being interleaved between surfaces of barrier ribs for spatially separating the cells and/or a bottom of each cell and the phosphors coated to the surfaces and/or the bottom, characteristics of the interference film filters being selected to reflect only wavelength components desired to display,
Claim 4
Dependent Claim
84 words
A plasma display system comprising a multiple of cells for light emitting areas separated spatially for color lights wherein phosphors in the cells are excited by energy of ultraviolet ray to obtain visible lights, each cell comprising: filters for reflecting lights of longer wavelengths than that of the ultraviolet ray to excite the phosphors, the filters being interleaved between surfaces of barrier ribs for spatially separating the cells and/or a bottom of each cell and the phosphors coated to the surfaces and/or the bottom.
Claim 5
Dependent Claim
93 words
A plasma display system comprising a multiple of cells for light emitting areas separated spatially for color lights wherein phosphors in the cells are excited by energy of ultraviolet ray to obtain visible lights, each cell comprising: a face panel for feeding out the lights, the face panel including a first face panel positioned inside, the first face panel being formed of thin transplant plate, and a second front glass panel positioned outside, the second front glass panel being formed of transparent plate having an optical characteristic of controlling directivity of the light.
Claim 6
Dependent Claim
46 words
The plasma display system according to according to claim 5, each cell further comprising an optical filter layer interleaved between the first face panel and the second front glass panel, the optical filter layer allowing virtually only light components for each color light to pass through.
Claim 7
Dependent Claim
36 words
The plasma display system according to any of claim 7 wherein an area of the optical filter of each cell corresponding to each emitted light color is made wider than an opening area of the cell.
Claim 8
Dependent Claim
38 words
The plasma display system according to any of claim 6 or 7, each cell further comprising a black member for absorbing light, the black member being positioned between the optical filters of different colors corresponding to the cells.
Claim 9
Dependent Claim
134 words
A plasma display system comprising a multiple of cells for light emitting areas separated spatially for color lights wherein phosphors in the cells are excited by energy of ultraviolet ray to obtain visible lights, each cell comprising: filters for effectively reflecting color lights emitted by the phosphors, the filters being interleaved between surfaces of barrier ribs for spatially separating the cells and/or a bottom of each cell and the phosphors coated to the surfaces and/or the bottom, and a face panel for feeding out the lights, the face panel including a first face panel positioned inside, the first face panel being formed of thin transplant plate, and a second front glass panel positioned outside, the second front glass panel being formed of transparent plate having an optical characteristic of controlling directivity of the light.
Claim 10
Dependent Claim
166 words
A plasma display system comprising a multiple of cells for light emitting areas separated spatially for color lights wherein phosphors in the cells are excited by energy of ultraviolet ray to obtain visible lights, each cell comprising: filters for effectively reflecting color lights emitted by the phosphors, the filters being interleaved between surfaces of barrier ribs for spatially separating the cells and/or a bottom of each cell and the phosphors coated to the surfaces and/or the bottom, a face panel for feeding out the lights, the face panel including a first face panel positioned inside, the first face panel being formed of thin transplant plate, and a second front glass panel positioned outside, the second front glass panel being formed of transparent plate having an optical characteristic of controlling directivity of the light, and an optical filter layer interleaved between the first face panel and the second front glass panel, the optical filter layer allowing virtually only light components for each color light to pass through.
Claim 11
Dependent Claim
34 words
The plasma display system according to claim 10, each cell further comprising a black member for absorbing light, the black member being positioned between the optical filters of different colors corresponding to the cells.
Claim 12
Dependent Claim
85 words
A plasma display system comprising a multiple of cells for light emitting areas separated spatially for color lights wherein phosphors in the cells are excited by energy of ultraviolet ray to obtain visible lights, each cell comprising: a face panel for feeding out the lights and multi-layer interference film filters positioned inside the face panel, the multi-layer interference film filters being formed of a multiple of thin films of different refraction factors for reflecting the ultraviolet ray and allowing the visible lights to pass through.
Claim 13
Dependent Claim
126 words
A plasma display system comprising a multiple of cells for light emitting areas separated spatially for color lights wherein phosphors in the cells are excited by energy of ultraviolet ray to obtain visible lights, each cell comprising: filters for effectively reflecting color lights emitted by the phosphors, the filters being interleaved between surfaces of barrier ribs for spatially separating the cells and/or a bottom of each cell and the phosphors coated to the surfaces and/or the bottom, and a face panel for feeding out the lights and multi-layer interference film filters positioned inside the face panel, the multi-layer interference film filters being formed of a multiple of thin films of different refraction factors for reflecting the ultraviolet ray and allowing the visible lights to pass through.
Claim 14
Dependent Claim
82 words
A plasma display system comprising a multiple of cells for light emitting areas separated spatially for color lights wherein phosphors in the cells are excited by energy of ultraviolet ray to obtain visible lights, each cell comprising: a reflective surface for reflecting the light emitted by the phosphor and a face transmission portion for feeding out the visible light, at least one of the reflective surface and the face transmission portion having a selectivity of the color light emitted by the phosphor.
References Cited (Backward Citations)
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