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:
May. 10, 2005
Filed:
Feb. 21, 2002
Tetsuroh Nakamura, Takaraduka, JP;
Masaichiro Tatekawa, Minoo, JP;
Tetsuroh Nakamura, Takaraduka, JP;
Masaichiro Tatekawa, Minoo, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A light source using electroluminescence layers of which width and thickness are adjusted so that emission luminance does not depend on the position on the layer. Also, a light source using red, green and blue electroluminescences light media for a color source of which the width and thickness are so adjusted that the required emission luminance can be obtained from electroluminescences for the respective colors. In light sources using electroluminescence not adjusted in width and thickness as light medium, emission luminance is different from position to position, especially in the direction along the longitudinal direction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile