Invention Grant
- Patent Title: Phosphorescent phosphor
- Patent Title (中): 磷光荧光粉
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Application No.: US202001Application Date: 1994-02-25
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Publication No.: US5424006APublication Date: 1995-06-13
- Inventor: Yoshihiko Murayama , Nobuyoshi Takeuchi , Yasumitsu Aoki , Takashi Matsuzawa
- Applicant: Yoshihiko Murayama , Nobuyoshi Takeuchi , Yasumitsu Aoki , Takashi Matsuzawa
- Applicant Address: JPX Tokyo
- Assignee: Nemoto & Co., Ltd.
- Current Assignee: Nemoto & Co., Ltd.
- Current Assignee Address: JPX Tokyo
- Priority: JPX5-103310 19930428; JPX6-004984 19940121
- Main IPC: C09K11/64
- IPC: C09K11/64 ; C09K11/77 ; C09K11/80
Abstract:
A phosphorescent phosphor according to the present invention includes a matrix expressed by MAl.sub.2 O.sub.4 in which M is at least one metal element selected from a group consisting of calcium, strontium and barium. Alternatively, a phosphorescent phosphor according to the present invention includes a matrix expressed by MAl.sub.2 O.sub.4 in which M is plural metal elements which are composed of magnesium and at least one metal element selected from a group consisting of calcium, strontium and barium and europium is added as an activator, further, co-activator is added.
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