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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 12538640 B1

PDFFull Text
Date of Patent:
Jan. 27, 2026

Filed:

Jun. 16, 2022

Light-receiving device with buffer layer and light-emitting and light-receiving apparatus with buffer layer

Applicant:

Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;

Inventors:

Yasuhiro Niikura, Tokyo, JP;

Daisuke Kubota, Kanagawa, JP;

Taisuke Kamada, Saitama, JP;

Sachiko Kawakami, Kanagawa, JP;

Anna Tada, Kanagawa, JP;

Satoshi Seo, Kanagawa, JP;

Assignee:

Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;

Attorney:

Fish & Richardson P.C.

Primary Examiner:

Caleb E Henry

Int. Cl.
CPC ...
H10K 50/16 (2023.01); C07C 15/20 (2006.01); C07C 15/28 (2006.01); C07C 15/38 (2006.01); C07C 211/54 (2006.01); C07D 209/82 (2006.01); C07D 219/16 (2006.01); C07D 221/20 (2006.01); C07D 235/08 (2006.01); C07D 251/24 (2006.01); C07D 307/91 (2006.01); C07D 333/18 (2006.01); C07D 333/76 (2006.01); C07D 401/10 (2006.01); C07D 403/10 (2006.01); C07D 403/14 (2006.01); C07D 405/04 (2006.01); C07D 405/12 (2006.01); C07D 409/10 (2006.01); C07D 409/12 (2006.01); C07D 409/14 (2006.01); C07D 413/10 (2006.01); C07D 471/06 (2006.01); C07D 471/14 (2006.01); C07D 491/048 (2006.01); C07D 495/04 (2006.01); C07D 495/14 (2006.01); C07D 495/22 (2006.01); C07D 519/00 (2006.01); C07F 7/22 (2006.01); C07F 15/00 (2006.01); H10K 30/20 (2023.01); H10K 65/00 (2023.01); H10K 85/30 (2023.01); H10K 85/60 (2023.01); H10K 30/50 (2023.01);
U.S. Cl.
CPC ...
H10K 50/16 (2023.02); C07C 15/20 (2013.01); C07C 15/28 (2013.01); C07C 15/38 (2013.01); C07C 211/54 (2013.01); C07D 209/82 (2013.01); C07D 219/16 (2013.01); C07D 221/20 (2013.01); C07D 235/08 (2013.01); C07D 251/24 (2013.01); C07D 307/91 (2013.01); C07D 333/18 (2013.01); C07D 333/76 (2013.01); C07D 401/10 (2013.01); C07D 403/10 (2013.01); C07D 403/14 (2013.01); C07D 405/04 (2013.01); C07D 405/12 (2013.01); C07D 409/10 (2013.01); C07D 409/12 (2013.01); C07D 409/14 (2013.01); C07D 413/10 (2013.01); C07D 471/06 (2013.01); C07D 471/14 (2013.01); C07D 491/048 (2013.01); C07D 495/04 (2013.01); C07D 495/14 (2013.01); C07D 495/22 (2013.01); C07D 519/00 (2013.01); C07F 7/2284 (2013.01); C07F 15/0093 (2013.01); H10K 30/20 (2023.02); H10K 65/00 (2023.02); H10K 85/30 (2023.02); H10K 85/346 (2023.02); H10K 85/615 (2023.02); H10K 85/622 (2023.02); H10K 85/623 (2023.02); H10K 85/624 (2023.02); H10K 85/631 (2023.02); H10K 85/652 (2023.02); H10K 85/654 (2023.02); H10K 85/656 (2023.02); H10K 85/657 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); H10K 30/50 (2023.02);
Abstract

A light-receiving device in which an increase in driving voltage is inhibited is provided. Any of the following light-receiving devices is provided: a light-receiving device that includes a light-receiving layer between a pair of electrodes and in which the light-receiving layer includes an active layer, a buffer layer, and an electron-transport layer, the buffer layer is between the active layer and the electron-transport layer and is in contact with the active layer, and the buffer layer includes an organic compound having an electron-withdrawing group; a light-receiving device that includes a light-receiving layer between a pair of electrodes and in which the light-receiving layer includes an active layer, a buffer layer, and an electron-transport layer, the buffer layer is between the active layer and the electron-transport layer and is in contact with the active layer, and the buffer layer includes a heteroaromatic compound having an electron-withdrawing group.

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