US 11,730,007 B2
Light-emitting element
Satoshi Seo, Kanagawa (JP); Hiromi Seo, Kanagawa (JP); and Tatsuyoshi Takahashi, Kanagawa (JP)
Assigned to Semiconductor Energy Laboratory Co., Ltd., Atsugi (JP)
Filed by SEMICONDUCTOR ENERGY LABORATORY CO., LTD., Atsugi (JP)
Filed on Jun. 1, 2022, as Appl. No. 17/829,498.
Application 17/829,498 is a continuation of application No. 16/944,257, filed on Jul. 31, 2020, granted, now 11,355,722.
Application 16/944,257 is a continuation of application No. 16/412,529, filed on May 15, 2019, granted, now 10,734,594, issued on Aug. 4, 2020.
Application 16/412,529 is a continuation of application No. 15/946,094, filed on Apr. 5, 2018, granted, now 10,644,254, issued on May 5, 2020.
Application 15/946,094 is a continuation of application No. 15/412,515, filed on Jan. 23, 2017, granted, now 9,947,885, issued on Apr. 17, 2018.
Application 15/412,515 is a continuation of application No. 15/051,910, filed on Feb. 24, 2016, granted, now 9,559,313, issued on Jan. 31, 2017.
Application 15/051,910 is a continuation of application No. 13/957,612, filed on Aug. 2, 2013, granted, now 9,276,228, issued on Mar. 1, 2016.
Claims priority of application No. 2012-172830 (JP), filed on Aug. 3, 2012.
Prior Publication US 2022/0293879 A1, Sep. 15, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H10K 50/11 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 85/60 (2023.01); H10K 101/10 (2023.01); H10K 101/40 (2023.01); C09K 11/06 (2006.01); C09K 11/02 (2006.01); H10K 85/30 (2023.01); H10K 101/30 (2023.01)
CPC H10K 50/11 (2023.02) [C09K 11/02 (2013.01); C09K 11/06 (2013.01); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 85/321 (2023.02); H10K 85/611 (2023.02); H10K 85/622 (2023.02); H10K 85/633 (2023.02); H10K 85/636 (2023.02); H10K 85/6572 (2023.02); H10K 85/6576 (2023.02); C09K 2211/1007 (2013.01); C09K 2211/1011 (2013.01); C09K 2211/1014 (2013.01); C09K 2211/1029 (2013.01); C09K 2211/1044 (2013.01); C09K 2211/1092 (2013.01); H10K 85/615 (2023.02); H10K 85/624 (2023.02); H10K 85/654 (2023.02); H10K 2101/10 (2023.02); H10K 2101/30 (2023.02); H10K 2101/40 (2023.02)] 15 Claims
OG exemplary drawing
 
9. A light-emitting device comprising:
a thermally activated delayed fluorescent substance and a fluorescent material in a light-emitting layer,
wherein the thermally activated delayed fluorescent substance comprises a first organic compound and a second organic compound,
wherein the first organic compound and the second organic compound form an exciplex,
wherein a peak wavelength of an emission spectrum of the thermally activated delayed fluorescent substance is longer than or equal to a peak wavelength of an absorption band on the lowest energy side in an absorption spectrum of the fluorescent material, and
wherein the fluorescent material emits fluorescence.