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:
Feb. 10, 2026
Filed:
Feb. 07, 2022
Shanghai Tianma Micro-electronics Co., Ltd., Shanghai, CN;
Keita Hamada, Kanagawa, JP;
Shigeru Mori, Kanagawa, JP;
Shanghai Tianma Micro-Electronics Co., Ltd., Shanghai, CN;
Abstract
An organic light-emitting device includes an anode electrode and a cathode electrode that are arranged facing each other; a light-emitting layer arranged between the anode electrode and the cathode electrode; and a hole transport layer arranged between the anode electrode and the light-emitting layer, contacting the light-emitting layer. The light-emitting layer includes a first host material and a second host material. An energy difference ΔEbetween a HOMO energy level of the first host material and a HOMO energy levelH of the hole transport layerH is less than an energy difference ΔEbetween a HOMO energy levelH of the second host material and the HOMO energy levelH of the hole transport layer. The difference between the HOMO energy levelH of the hole transport layer and the HOMO energy levelH of the first host material is 0.37 eV or less.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile