Mattingly, Stanger, Malur & Brundidge, P.C.
Light source and display using the same
The luminance of phosphor is enhanced by forming a phosphor screen of a fluorescence generation unit by phosphor expressed by the following composition formula: (L1-a-bGdaCeb)3(Al1-cGac)5O12:Md wherein, a, b and c are each in the following ranges of 0≦a≦1.0, 0<b≦0.1 and 0≦c≦1.0, M is dopant of a monovalent metal element and is included in phosphor by approximately 0<d≦1000 wt-ppm. Dopant M of a monovalent metal element is at least one type of element selected from a group consisting of K, Na, Li, Cu, Ag and Au. Thus, a display using a white light of improved luminescence and having excellent characteristics can be realized.
Hitachi, Ltd.
G Y C Y H H
G02F Y02B C09K Y10S H01L H01L
additional additional inventional additional additional additional
Masatoshi Shin Choichiro Teruki Hiromichi Masaaki
Shiiki Imamura Okazaki Suzuki Yamada Komatsu