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:
Jul. 29, 2025
Filed:
Nov. 18, 2022
Japan Display Inc., Tokyo, JP;
Takahiro Ushikubo, Tokyo, JP;
Daisuke Nemoto, Tokyo, JP;
Japan Display Inc., Tokyo, JP;
Abstract
A display device incudes a first pixel electrode, a second pixel electrode, an insulating layer covering the first pixel electrode and the second pixel electrode, the insulating layer including a first opening part and a second opening part, a first light-emitting layer, a second light-emitting layer, a counter electrode arranged above the first light-emitting layer and the second light-emitting layer, wherein a light emission start voltage of the second light-emitting layer is lower than a light emission start voltage of the first light-emitting layer, the second light-emitting layer includes a first area arranged at a first end portion adjacent to the first light-emitting layer, the first area having a first dopant concentration, and a second area arranged at a second end portion of the second light-emitting layer opposing the first end portion, the second area having a second dopant concentration higher than the first dopant concentration.