Appeal No. 1997-0523
Application 08/082,576
The disclosed invention pertains to mixed green-emitting
phosphors, cathode-ray tubes which include such mixed green-
emitting phosphors and a method of forming such mixed green-
emitting phosphors. The mixed green-emitting phosphors of the
invention provide excellent luminance saturation
characteristics and deterioration characteristics under high
current density conditions. The mixed green phosphors of the
present invention contain three or four phosphors. To achieve
the desirable properties of the invention, various phosphors
are mixed in the concentrations specified on pages 2 and 3 of
the specification and in the claims. The invention is further
illustrated by the following claim.
1. A mixed green-emitting phosphor comprising Y (Al,
3
Ga) O :Tb, LaOCl:Tb, Y SiO :Tb and Zn SiO :Mn phosphors in the5 12 2 5 2 4
following concentrations by weight:
20 to 60% of Y (Al,Ga) O :Tb,
3 5 12
no more than 30% of LaOCl:Tb,
no more than 50% of Y SiO :Tb, and
2 5
no more than 20% of Zn SiO :Mn.
2 4
The references relied on by the Examiner are:
Yang et al. (Yang) 5,196,763 Mar. 23, 1993
(filing date, May 10, 1991)
2
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 Next
Last modified: November 3, 2007