US 7,527,748 B2
Phosphor and phosphor film for electron beam excitation and color display apparatus using the same
Masahiro Gotoh, Tokyo (Japan); Akira Nagatomi, Tokyo (Japan); Kenji Sakane, Tokyo (Japan); and Shuji Yamashita, Tokyo (Japan)
Assigned to DOWA Electronics Materials Co., Ltd., Tokyo (Japan); and Nichia Corporation, Anan-shi (Japan)
Filed on Aug. 02, 2005, as Appl. No. 11/194,590.
Claims priority of application No. 2004-225688 (JP), filed on Aug. 02, 2004; and application No. 2005-075840 (JP), filed on Mar. 16, 2005.
Prior Publication US 2007/0029525 A1, Feb. 08, 2007
This patent is subject to a terminal disclaimer.
Int. Cl. H01L 33/00 (2006.01); H05B 33/14 (2006.01); C09K 11/64 (2006.01); C09K 11/59 (2006.01); C09K 11/08 (2006.01); C09K 11/55 (2006.01)
U.S. Cl. 252—301.4F  [252/301.6  F; 313/486; 313/467; 313/461; 313/468] 8 Claims
OG exemplary drawing
 
1. A phosphor film for an electron beam excitation, manufactured by using the phosphor for an electron beam excitation, expressed by a composition formula MmAaBbOoNn:Z (wherein element M is at least one or more kind of element having bivalent valency, element A is at least one or more kind of element having tervalent valency, element B is at least one or more kind of element having tetravalent valency, O is oxygen, N is nitrogen, element Z is the element acting as an activator in the phosphor, satisfying o≧0, n=2/3m+a+4/3b−2/3o, m=a=b=1), wherein a film thickness is 65 μm or less.