Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Reexamination Certificate
2007-04-10
2007-04-10
Patel, Nimeshkumar D. (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
C313S484000, C313S486000, C313S582000
Reexamination Certificate
active
11028217
ABSTRACT:
A green phosphor for a plasma display panel has improved color purity, improved lifespan, and improved discharge stability. The green phosphor comprises a core including at least one first phosphor material selected from the group consisting of Zn2SiO4:Mn, (Zn,A)2SiO4:Mn (A is an alkaline earth metal), (Ba,Sr,Mg)O.αAl2O3:Mn (α is an integer in a range of 1 to 23), and MgAlxOy:Mn (x is an integer in the range of 1 to 10, and y is an integer in a range of 1 to 30), and a coating layer including a second phosphor which is present on the surface of the first phosphor, and which is at least one selected from the group consisting of LaMgAlxOy:Tb:Tb (x is an integer in the range of 1 to 14, and y is an integer in the range of 8 to 47), ReBO3:Tb (Re is a rare earth element selected from the group consisting of Sc, Y, La, (Ce, and Gd), and (Y, Gd)BO3:Tb.
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“Final Draft International Standard”, Project No. 47C/61988-1/Ed.1; Plasma Display Panels—Part 1: Terminology and letter symbols, published by International Electrotechnical Commission, EEC. in 2003, and Appendix A—Description of Technology, Annex B—Relationship Between Voltage Terms And Discharge Characteristics; Annex C—Gaps and Annex D—Manufacturing.
Bushnell , Esq. Robert E.
Patel Nimeshkumar D.
Samsung SDI & Co., Ltd.
Walford Natalie K.
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