公开(公告)号：US20210347782A1

公开(公告)日：2021-11-11

申请号：US16090477

申请日：2018-02-28

申请人： Semiconductor Energy Laboratory Co., Ltd.

发明人： Kyoko TAKEDA ,  Harue OSAKA ,  Satoshi SEO ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO ,  Yusuke TAKITA

IPC分类号： C07D491/048 ,  C07D495/00 ,  H01L51/00

摘要： A novel organic compound is provided. Alternatively, an organic compound that exhibits light emission with favorable chromaticity is provided. Alternatively, an organic compound that exhibits blue light emission with favorable chromaticity is provided. Alternatively, an organic compound with favorable emission efficiency is provided. Alternatively, an organic compound having a high carrier-transport property is provided. Alternatively, an organic compound with favorable reliability is provided.
An organic compound including at least one amino group in which any one of a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, and a substituted or unsubstituted carbazolyl group is bonded to any one of a substituted or unsubstituted naphthobisbenzofuran skeleton, a substituted or unsubstituted naphthobisbenzothiophene skeleton, and a substituted or unsubstituted naphthobenzofuranobenzothiophene skeleton is provided.

公开(公告)号：US20210249619A1

公开(公告)日：2021-08-12

申请号：US17048642

申请日：2019-10-03

申请人： SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

发明人： Satoshi SEO ,  Tsunenori SUZUKI ,  Takumu OKUYAMA ,  Yusuke TAKITA ,  Naoaki HASHIMOTO ,  Hiromi SEO ,  Nobuharu OHSAWA ,  Toshiki SASAKI ,  Shunpei YAMAZAKI

IPC分类号： H01L51/50

摘要： A novel light-emitting device is provided. Alternatively, a light-emitting device with high emission efficiency is provided. Alternatively, a light-emitting device having along lifetime is provided. Alternatively, a light-emitting device having low driving voltage is provided. A light-emitting device including an EL layer including a first layer, a second layer, a third layer, a light-emitting layer, and a fourth layer in this order from the anode side is provided. The first layer includes a first organic compound and a second organic compound. The fourth layer includes a seventh organic compound. The first organic compound exhibits an electron-accepting property with respect to the second organic compound. The HOMO level of the second organic compound is from −5.7 eV to −5.4 eV. The HOMO level of the seventh organic compound is −6.0 eV or higher.

公开(公告)号：US20210242409A1

公开(公告)日：2021-08-05

申请号：US17160658

申请日：2021-01-28

申请人： Semiconductor Energy Laboratory Co., Ltd.

发明人： Satoshi Seo ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO

IPC分类号： H01L51/00

摘要： A novel light-emitting device that is highly convenient, useful, or reliable is provided. The light-emitting device includes a first electrode, a second electrode, and a first layer. The first layer contains a light-emitting material, a first material, and a second material. The first material has a first anthracene skeleton and a first substituent. The first substituent is bonded to the first anthracene skeleton and includes a heteroaromatic ring. The second material has a second anthracene skeleton, a second substituent, and a third substituent. The second substituent is bonded to the second anthracene skeleton and includes an aromatic ring whose ring structure is composed of carbon. The third substituent is bonded to the second anthracene skeleton and includes an aromatic ring whose ring structure is composed of carbon. The third substituent has a different structure from the second substituent.

公开(公告)号：US20210184130A1

公开(公告)日：2021-06-17

申请号：US17116031

申请日：2020-12-09

申请人： SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

发明人： Kyoko TAKEDA ,  Harue OSAKA ,  Hiroshi KADOMA ,  Satoshi SEO ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO

IPC分类号： H01L51/00 ,  C07D493/04 ,  C09K11/06

摘要： A novel organic compound with favorable thermophysical properties is provided. An organic compound represented by General Formula (G1) is provided. At least one of X1 to X5 is a secondary or tertiary alkyl group having 3 to 6 carbon atoms in which a carbon atom bonded to a phenyl group branches. Each of R1 to R7 is independently any of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, and an unsubstituted or alkyl-substituted aryl group having 6 to 13 carbon atoms. Ar1 represents a substituted or unsubstituted condensed heteroaromatic ring skeleton having 8 to 60 carbon atoms and composed of two or more aromatic rings, and Ar2 represents a substituted or unsubstituted aryl group having 6 to 25 carbon atoms. Furthermore, n is any of 1 to 3.

公开(公告)号：US20210028371A1

公开(公告)日：2021-01-28

申请号：US16937793

申请日：2020-07-24

申请人： SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

发明人： Takumu OKUYAMA ,  Naoaki HASHIMOTO ,  Yusuke TAKITA ,  Hiroshi KADOMA ,  Tsunenori SUZUKI ,  Satoshi SEO ,  Tomoya HIROSE

IPC分类号： H01L51/00 ,  C07D491/048 ,  C07D401/10

摘要： A novel light-emitting device is provided. A light-emitting device with high emission efficiency is provided. A light-emitting device having a long lifetime is provided. A light-emitting device with low driving voltage is provided. The light-emitting device includes an anode, a cathode, and an EL layer between the anode and the cathode. The EL layer includes a light-emitting layer and an electron-transport layer. The electron-transport layer is positioned between the light-emitting layer and the cathode. The electron-transport layer contains an electron-transport material. The electron-transport material is an organic compound including a first skeleton, a second skeleton, and a third skeleton. The first skeleton has a function of transporting electrons. The second skeleton has a function of accepting holes. The third skeleton includes a monocyclic π-electron deficient heteroaromatic ring.

公开(公告)号：US20210005669A1

公开(公告)日：2021-01-07

申请号：US16914530

申请日：2020-06-29

申请人： Semiconductor Energy Laboratory Co., Ltd.

发明人： Taisuke KAMADA ,  Ryo HATSUMI ,  Daisuke KUBOTA ,  Naoaki HASHIMOTO ,  Tsunenori SUZUKI ,  Harue OSAKA ,  Satoshi SEO

IPC分类号： H01L27/28 ,  H01L27/30 ,  H01L27/32 ,  H01L51/50 ,  H01L51/52

摘要： An object is to provide a highly reliable display unit having a function of sensing light. The display unit includes a light-receiving device and a light-emitting device. The light-receiving device includes an active layer between a pair of electrodes. The light-emitting device includes a hole-injection layer, a light-emitting layer, and an electron-transport layer between a pair of electrodes. The light-receiving device and the light-emitting device share one of the electrodes, and may further share another common layer between the pair of electrodes. The hole-injection layer is in contact with an anode and contains a first compound and a second compound. The electron-transport property of the electron-transport layer is low; hence, the light-emitting layer is less likely to have excess electrons. Here, the first compound is the material having a property of accepting electrons from the second compound.

公开(公告)号：US20200185634A1

公开(公告)日：2020-06-11

申请号：US16791231

申请日：2020-02-14

申请人： Semiconductor Energy Laboratory Co., Ltd.

发明人： Naoaki HASHIMOTO ,  Tsunenori SUZUKI ,  Satoshi SEO ,  Hiromi SEO ,  Hiromitsu KIDO

IPC分类号： H01L51/50 ,  H01L27/32

摘要： A light-emitting element that includes a fluorescent material and has a high emission efficiency is provided. A light-emitting element in which a delayed fluorescence component due to TTA accounts for a high proportion of emissive components is provided. A novel light-emitting device with a high emission efficiency and a low power consumption is provided. A light-emitting element includes an anode, a cathode, and an EL layer. The EL layer includes a light-emitting layer including a host material and an electron-transport layer including a first material in contact with the light-emitting layer. The LUMO level of the first material is lower than that of the host material. The proportion of a delayed fluorescence component due to TTA is greater than or equal to 10 percent of the light emission from the EL layer. The proportion of the delayed fluorescence component due to TTA may be greater than or equal to 15 percent of the light emission.

公开(公告)号：US20190237682A1

公开(公告)日：2019-08-01

申请号：US16381612

申请日：2019-04-11

申请人： Semiconductor Energy Laboratory Co., Ltd.

发明人： Satoshi Seo ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO

IPC分类号： H01L51/00 ,  H01L51/52 ,  H01L51/50

CPC分类号： H01L51/0072 ,  H01L51/0052 ,  H01L51/0067 ,  H01L51/5004 ,  H01L51/5012 ,  H01L51/506 ,  H01L51/508 ,  H01L51/524 ,  H01L2251/552

摘要： Provided is a novel light-emitting element, a light-emitting element with a long lifetime, or a light-emitting element with high emission efficiency. The light-emitting element includes an EL layer between a pair of electrodes. The EL layer includes at least a light-emitting layer containing a fluorescent substance and a host material, a first electron-transport layer containing a first electron-transport material, and a second electron-transport layer containing a second electron-transport material, which are in contact with each other and in this order. The LUMO level of each of the host material and the second electron-transport material is higher than the LUMO level of the first electron-transport material.

公开(公告)号：US20180277783A1

公开(公告)日：2018-09-27

申请号：US15985748

申请日：2018-05-22

申请人： Semiconductor Energy Laboratory Co., Ltd.

发明人： Naoaki HASHIMOTO ,  Tsunenori SUZUKI ,  Satoshi SEO ,  Hiromi SEO ,  Hiromitsu KIDO

IPC分类号： H01L51/50 ,  H01L51/00

摘要： A light-emitting element that includes a fluorescent material and has a high emission efficiency is provided. A light-emitting element in which a delayed fluorescence component due to TTA accounts for a high proportion of emissive components is provided. A novel light-emitting device with a high emission efficiency and a low power consumption is provided. A light-emitting element includes an anode, a cathode, and an EL layer. The EL layer includes a light-emitting layer including a host material and an electron-transport layer including a first material in contact with the light-emitting layer. The LUMO level of the first material is lower than that of the host material. The proportion of a delayed fluorescence component due to TTA is greater than or equal to 10 percent of the light emission from the EL layer. The proportion of the delayed fluorescence component due to TTA may be greater than or equal to 15 percent of the light emission.

公开(公告)号：US20180033993A1

公开(公告)日：2018-02-01

申请号：US15658622

申请日：2017-07-25

申请人： Semiconductor Energy Laboratory Co., Ltd.

发明人： Satoshi Seo ,  Tsunenori SUZUKI ,  Yusuke TAKITA ,  Naoaki HASHIMOTO

IPC分类号： H01L51/50 ,  H01L51/00 ,  H01L51/56

CPC分类号： H01L51/5016 ,  H01L51/0008 ,  H01L51/0052 ,  H01L51/0058 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/5012 ,  H01L51/5056 ,  H01L51/5064 ,  H01L51/5072 ,  H01L51/508 ,  H01L51/5088 ,  H01L51/56 ,  H01L2251/552

摘要： A novel light-emitting element is provided. A light-emitting element with a long lifetime is provided. A light-emitting element with high emission efficiency is provided. In the light-emitting element, an EL layer includes a hole-injection layer, a first hole-transport layer, a second hole-transport layer, a third hole-transport layer, a light-emitting layer, a first electron-transport layer, and a second electron-transport layer in this order; the hole-injection layer includes an organic acceptor; the LUMO level of the host material is higher than that of the first electron-transport layer; the LUMO level of the second electron-transport layer is higher than that of the first electron-transport layer; the host material is a substance including a condensed aromatic ring skeleton; and the first and second electron-transport layers each include a substance having a heteroaromatic ring skeleton.