The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 26, 1988
Filed:
Dec. 07, 1984
Hiroshi Uchida, Odawara, JP;
Thihiro Yoshida, Hatano, JP;
Kasei Optonix, Ltd., , JP;
Abstract
A cathode ray tube having a fluorescent screen of a copper and aluminum activated zinc sulfide phosphor (ZnS:Cu,Al). The ZnS:Cu,Al phosphor has a Cu activator value ranging from 3.times.10.sup.-4 to 5.times.10.sup.-3 grams per 1 gram of ZnS; an emission color point within a yellowish green region in the color coordinates of CIE color system represented by values x and y ranging from 0.295 to 0.370 and 0.570 to 0.630, respectively; a color point of body color within a yellow region in the color coordinates of CIE color system represented by values x and y ranging from 0.380 to 0.400 and 0.390 to 0.440, respectively; and a mean reflectance in the visible spectrum region of not less than 75% when the mean reflectance of a magnesium oxide diffusion plate is defined to be 100%.