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:
Jan. 05, 2021
Filed:
Aug. 05, 2019
Sharp Kabushiki Kaisha, Osaka, JP;
David James Montgomery, Oxford, GB;
Enrico Angioni, Oxford, GB;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A light-emitting layer structure that improves the optical extraction efficiency using asymmetrical quantum dots aligned with a plane of the layer structure is provided. The structure includes a substrate; a first electrode layer deposed on the substrate; a first charge transport layer deposited on the first electrode layer; an emissive layer (EML) deposited on the first charge transport layer; a second charge transport layer deposited on the EML; and a second electrode layer deposited on the second charge transport layer; wherein the EML includes asymmetrical quantum dot nanoparticles, and each nanoparticle has a major axis longer than a first minor axis and a second minor axis, both the first minor axis and the second minor axis being orthogonal to the major axis, and wherein the major axis of each of the nanoparticles of the plurality of nanoparticles is aligned parallel to a plane of the EML.