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:
Sep. 15, 2009
Filed:
Feb. 04, 2005
Hiroshi Fujimoto, Minamiashigara, JP;
Tomotake Ikada, Kanagawa-ken, JP;
Kenji Takahashi, Kanagawa-ken, JP;
Hiroshi Fujimoto, Minamiashigara, JP;
Tomotake Ikada, Kanagawa-ken, JP;
Kenji Takahashi, Kanagawa-ken, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
Providing a particle distributed electroluminescent device which is improved in luminescent color control, prevention of luminescent color change over time and heavy circuit load, and/or representation of a delicate gradation sequence, as well as capable of providing high brightness and luminous efficiency, and a display unit using such an electroluminescence device. Two types of luminescent particles, each having a dielectric core and a fluorescent coating layer are used as luminescent particles distributed in a luminescent layer of a particle distributed electroluminescence device. The dielectric cores of the two types of luminescent particles are formed of dielectric materials having different dielectric constants with each other.