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Cathode ray tube for color display



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Patent 4996459
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Document Number
US Patent 4996459
Issued Date
February 26, 1991
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Abstract
A color cathode-ray tube having a face glass (1) coated with a plurality of phosphors (6B, 6G, 6R) different in luminescent color, the face glass (1) containing a colorant imparting a selective characteristic for absorbing light in the wavelength regions between the luminescent wavelength regions of the phosphors, (6B, 6G, 6R) and a colorant suppressing the light transmittance in the visible region, wherein the light transmittances in the luminescent wavelength regions shorter than the highest-visibility wavelength region are at least about 5% lower than the light transmittance in the highest-visibility region, while the light transmittances in the luminescent wavelength regions longer than the highest-visibility wavelength region is higher than the light transmittance in the highest-visibility region.
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Cathode ray tube for color display - US Patent 4996459 Drawing
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Number of Claims:
8
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Published
February 26, 1991
Application Number
07/029,341
Filed
March 23, 1987
US Classification
313/467   313/474 313/480
Int'l Classification
H01J   29/86   (20060101)  
Examiner
Parent Case
This application is a continuation of application Ser. No. 803,507, filed Nov. 29, 1985, now abandoned which is a continuation of Ser. No. 543,620, filed Oct. 20, 1983, now abandoned.
Priority Data
Oct 29, 1982 [JP] 57-191203
USPTO Field of Search
313/467   313/474   313/480  
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