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:
Jun. 23, 2026
Filed:
Sep. 19, 2022
Lumifoil Ab, Umeå, SE;
Christian Larsen, Umeå, SE;
Andreas Sandström, Tavelsjö, SE;
Shi Tang, Umeå, SE;
Patric Stafshede, Umeå, SE;
Ludvig Edman, Umeå, SE;
Lumifoil AB, Umeå, SE;
Abstract
A light-emitting electrochemical cell () comprises a substrate (), a first electrode (), an emission layer (), contacting the first electrode () and providing a first 2D pattern, which is made up by the emission layer being visually distinguishable, and a second electrode (). The emission layer () provides a second 2D pattern, which is made up by first portions () which are passive with respect to photoluminescence and second portions () of the emission layer which are active with respect to photoluminescence, and a third 2D pattern is provided by regions, which are active with respect to electroluminescence, where the first and second electrodes () overlap and electrically contact the second portions () of the emission layer (). There is also disclosed a security element, a security system and methods of operating and manufacturing the light-emitting electrochemical cell ().