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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.:

US 11785819 B1

PDFFull Text
Date of Patent:
Oct. 10, 2023

Filed:

Apr. 01, 2021

Layers for improved extraction for transparent cathode emissive displays

Applicant:

Sharp Kabushiki Kaisha, Sakai, JP;

Inventors:

David James Montgomery, Bampton, GB;

Hywel Hopkin, Oxford, GB;

Assignee:

SHARP KABUSHIKI KAISHA, Sakai, JP;

Attorney:

ScienBiziP, P.C.

Primary Examiner:

Daniel Whalen

Int. Cl.
CPC ...
H10K 59/35 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 50/115 (2023.01); H10K 50/818 (2023.01); H10K 50/828 (2023.01); H10K 59/122 (2023.01); H10K 59/173 (2023.01);
U.S. Cl.
CPC ...
H10K 59/35 (2023.02); H10K 50/115 (2023.02); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/818 (2023.02); H10K 50/828 (2023.02); H10K 59/122 (2023.02); H10K 59/173 (2023.02);
Abstract

A light emitting structure comprises a substrate, a sub-pixel stack over a surface of the substrate, a bank surrounding the sub-pixel stack and forming an interior space above the sub-pixel stack, a first material filling the interior space and having a first refractive index, and a second material over the first material and having a second refractive index substantially higher than the first refractive index. The sub-pixel stack comprises an emissive layer between a first transport layer and a second transport layer, a first electrode layer coupled to the first transport layer, and a second electrode layer coupled to the second transport layer. The second electrode layer has a third refractive index substantially matched to the first refractive index.

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