Image display panel

Details Image display panel Image display panel

1989-02-09

1991-07-02

O'Shea, Sandra L.

Electric lamp and discharge devices

Cathode ray tube

Screen

313474, 313112, 340702, 358253, H01J 2988, H01J 516, G09G 128, H04N 572

Patent

active

050288407

ABSTRACT:
The invention relates to a large-size image display panel for outdoor use. The image display panel related to the invention has a number of cathode ray tubes which are respectively provided with a plurality of red luminous bodies, green luminous bodies, and blue luminous bodies illuminating themselves by receiving irradiation of electron beams in the inside of the face plate, while each of those cathode ray tubes is also provided with a red filter, a green filter, and a blue filter which are disposed in the outside of the face plate in correspondence with red luminous bodies, green luminous bodies, and blue luminous bodies. Using these filters provided in correspondence with those luminous bodies, electron beams having specific wavelengths from respective luminous bodies are selectively filtered out. As a result, the image display panel related to the invention sufficiently secures the needed luminance intensity of image and reliably generates a satisfactory image exhibiting sharp contrast and high brilliance constantly.

REFERENCES:
patent: 3891440 (1975-06-01), Gallaro et al.
patent: 4416961 (1983-11-01), Drexhage
patent: 4635105 (1987-01-01), Favreau
patent: 4734761 (1988-03-01), Kondoh et al.

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