The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 04, 2008
Filed:
Jun. 03, 2005
Hitoshi Toki, Chiba, JP;
Takuya Hamada, Chiba, JP;
Tomohiro Yamada, Chiba, JP;
Masahiro Kato, Chiba, JP;
Hitoshi Toki, Chiba, JP;
Takuya Hamada, Chiba, JP;
Tomohiro Yamada, Chiba, JP;
Masahiro Kato, Chiba, JP;
Futaba Corporation, Mobara, Chiba, JP;
Abstract
A multi-color luminous fluorescent display device includes therein a vacuum-sealed vessel having a glass substrate, an anode disposed on the glass substrate, a cathode installed in the vacuum-sealed vessel, a first phosphorescent layer containing a phosphor emitting yellow to red light, and a second phosphorescent layer containing a phosphor emitting blue to green light. The first phosphorescent layer contains a LnOS:Eu phosphor (Ln is at least one selected from a group consisting of La, Gd, Lu and Y) which emits yellow to red light, and the second phosphorescent layer contains at least one phosphor selected from ZnO:Zn phosphor, ZnGaOphosphor and ZnGaO:Mn phosphor which emit blue to green light.