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. 12, 2002
Filed:
Jul. 08, 1999
Koji Tanabe, Katano, JP;
Heiji Ikoma, Ikoma-gun, JP;
Naohiro Nishioka, Hirakata, JP;
Yosuke Chikahisa, Katano, JP;
Abstract
A dispersion-type electroluminescence element composed of a plurality of light-transmitting electrode layers A, B and a plurality of luminescence layers A, B of dielectric resin having a high permittivity dispersed with fluorescent powder stacked one layer after the other over the whole region, or in a certain specific region, of one surface of a light-transmitting insulation film ; and a back electrode layer provided on the last layer of the luminescence layers formed by a printing process. The electroluminescence element is capable of producing a multiple number of luminescence colors, yet the cost is low. In other example of carrying out the present invention, a luminescence layer formed of a luminous body of one single luminescence color provided over a whole region of a surface is sandwiched by a back electrode layer and a light-transmitting electrode layer composed of two groups of fine line comb-teeth layer coupled one tooth after the one of the other electrode layer, and a stripe-shaped color conversion layer is provided in a location corresponding to one of the two groups of comb-teeth fine lines. When an AC voltage is applied on the back electrode layer and each of the two respective light-transmitting electrode layers independently, a multiple number of luminescence colors are produced in a homogeneous plane luminescence, without accompanying the stripes outstanding to the eyes.