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:
Apr. 14, 2026
Filed:
Jul. 12, 2022
Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;
Sachiko Kawakami, Kanagawa, JP;
Yui Yoshiyasu, Kanagawa, JP;
Nobuharu Ohsawa, Kanagawa, JP;
Tsunenori Suzuki, Kanagawa, JP;
Toshiki Sasaki, Kanagawa, JP;
Naoaki Hashimoto, Kanagawa, JP;
Tomohiro Kubota, Kanagawa, JP;
Satoshi Seo, Kanagawa, JP;
Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;
Abstract
A light-emitting device having favorable heat resistance is provided. The light-emitting device includes an anode, a cathode, and an EL layer positioned between the first anode and the cathode. The EL layer includes a light-emitting layer and a first layer. The first layer is positioned between the light-emitting layer and the cathode. The light-emitting layer and the first layer are in contact with each other. The light-emitting layer contains a first organic compound, a second organic compound, and a light-emitting substance. The first layer contains a third organic compound. The first organic compound and the third organic compound each have an electron-transport property. The second organic compound has a hole-transport property. The light-emitting substance emits red light. The first organic compound is represented by General Formula (G100). The third organic compound is represented by General Formula (G300).