公开(公告)号：US20240373746A1

公开(公告)日：2024-11-07

申请号：US18653569

申请日：2024-05-02

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Harue OSAKA ,  Takahiro USHIKUBO ,  Nobuharu OHSAWA ,  Satoshi SEO ,  Tsunenori SUZUKI

IPC: H10K85/60 ,  C07C211/54 ,  C09K11/02 ,  C09K11/06 ,  H05B33/14 ,  H10K50/11 ,  H10K50/14 ,  H10K50/15 ,  H10K50/16 ,  H10K50/19 ,  H10K59/32 ,  H10K85/30 ,  H10K101/10

Abstract: A triarylamine derivative represented by a general formula (G1) given below is provided. Note that in the formula, Ar represents either a substituted or unsubstituted phenyl group or a substituted or unsubstituted biphenyl group; α represents a substituted or unsubstituted naphthyl group; β represents either hydrogen or a substituted or unsubstituted naphthyl group; n and m each independently represent 1 or 2; and R1 to R8 each independently represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, or a phenyl group.

公开(公告)号：US20240172461A1

公开(公告)日：2024-05-23

申请号：US18496520

申请日：2023-10-27

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Harue OSAKA ,  Satoshi SEO ,  Nobuharu OHSAWA ,  Kazuki KAJIYAMA ,  Hiromitsu KIDO

IPC: H10K50/11 ,  C09K11/06 ,  H10K85/60

CPC classification number: H10K50/11 ,  C09K11/06 ,  H10K85/6572 ,  H10K2101/10

Abstract: A highly efficient light-emitting device is provided. The light-emitting device includes a light-emitting layer between a first electrode and a second electrode. The light-emitting layer includes at least a light-emitting substance and a first substance, the half width of an emission spectrum of the light-emitting substance is 0.35 eV or less, the luminescence lifetime of delayed fluorescence caused by photoexcitation of the first substance is shorter at a first temperature than at a second temperature, the first temperature is lower than the second temperature, and the first temperature and the second temperature are each higher than or equal to 10 K and lower than or equal to 300 K.

公开(公告)号：US20240172460A1

公开(公告)日：2024-05-23

申请号：US18496382

申请日：2023-10-27

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Harue OSAKA ,  Satoshi SEO ,  Nobuharu OHSAWA ,  Kazuki KAJIYAMA ,  Hiromitsu KIDO

IPC: H10K50/11 ,  C09K11/06 ,  H10K85/40 ,  H10K85/60

CPC classification number: H10K50/11 ,  C09K11/06 ,  H10K85/40 ,  H10K85/631 ,  H10K85/654 ,  H10K85/6572 ,  H10K85/6574 ,  H10K2101/25

Abstract: A light-emitting device with favorable carrier balance is provided. The light-emitting device includes a light-emitting layer between a first electrode and a second electrode. The light-emitting layer includes at least a first substance and a light-emitting substance, the first substance includes an organic compound having one or more of a carbazole ring, an aromatic amine skeleton, and a π-electron deficient heteroaromatic ring, a luminescence lifetime of delayed fluorescence caused by photoexcitation of the light-emitting substance is shorter at a first temperature than at a second temperature, the first temperature is lower than the second temperature, and the first temperature and the second temperature are each higher than or equal to 10 K and lower than or equal to 300 K.

公开(公告)号：US20230329105A1

公开(公告)日：2023-10-12

申请号：US18130684

申请日：2023-04-04

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Satoko NUMATA ,  Harue OSAKA ,  Sachiko KAWAKAMI ,  Takashi SHINGU ,  Anna TADA ,  Yui YOSHIYASU ,  Yasuhiro NIIKURA ,  Eriko AOYAMA ,  Naoaki HASHIMOTO ,  Satoshi SEO

IPC: H10K85/60 ,  H10K85/30

CPC classification number: H10K85/6572 ,  H10K85/633 ,  H10K50/16 ,  H10K85/342 ,  H10K85/6574 ,  H10K85/636

Abstract: An organic semiconductor device that can achieve high resolution and favorable reliability is provided. The organic semiconductor device is one of a plurality of light-emitting devices formed over an insulating layer, which includes a first electrode, a second electrode, and an organic compound layer. The organic compound layer is positioned between the first electrode and the second electrode. The organic compound layer includes a layer containing a first compound. When differential scanning calorimetry is performed on the first compound in such a manner that a cooling step is performed from the state in which the first compound is melted in a first heating step and a second heating step is successively performed, an exothermic peak is not observed in the cooling step and an exothermic peak and a melting point peak are not observed in the second heating step.

公开(公告)号：US20230292544A1

公开(公告)日：2023-09-14

申请号：US18016717

申请日：2021-07-13

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yuta KAWANO ,  Airi UEDA ,  Takeyoshi WATABE ,  Nobuharu OHSAWA ,  Keito TOSU ,  Harue OSAKA ,  Satoshi SEO

IPC: H10K50/858 ,  H10K85/30 ,  H10K85/60 ,  C09K11/06 ,  H10K59/35

CPC classification number: H10K50/858 ,  C09K11/06 ,  H10K59/35 ,  H10K85/342 ,  H10K85/654 ,  H10K85/6572 ,  C09K2211/1029 ,  C09K2211/185 ,  H10K50/166

Abstract: Provided is an inexpensive light-emitting device with high emission efficiency. Provided is a light-emitting device including an anode, a cathode, an EL layer positioned between the anode and the cathode; the EL layer includes a hole-transport region, a light-emitting layer, and an electron-transport region; the hole-transport region is positioned between the anode and the light-emitting layer; the electron-transport region is positioned between the cathode and the light-emitting layer; the hole-transport region contains any one of a sulfonic acid compound, a fluorine compound, and a metal oxide; the electron-transport region contains an organic compound having an electron-transport property; and an ordinary refractive index of the organic compound having an electron-transport property with respect to light with a wavelength greater than or equal to 455 nm and less than or equal to 465 nm is higher than or equal to 1.50 and lower than or equal to 1.75.

公开(公告)号：US20230079236A1

公开(公告)日：2023-03-16

申请号：US17987188

申请日：2022-11-15

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Satoshi SEO ,  Nobuharu OHSAWA ,  Satoko SHITAGAKI ,  Hideko INOUE ,  Hiroshi KADOMA ,  Harue OSAKA ,  Kunihiko SUZUKI ,  Yasuhiko TAKEMURA

IPC: H01L51/00

Abstract: A light-emitting element includes a light-emitting layer including a guest, an n-type host and a p-type host between a pair of electrodes, where the difference between the energy difference between a triplet excited state and a ground state of the n-type host (or p-type host) and the energy difference between a triplet excited state and a ground state of the guest is 0.15 eV or more. Alternatively, in such a light-emitting element, the LUMO level of the n-type host is higher than the LUMO level of the guest by 0.1 eV or more, or the HOMO level of the p-type host is lower than the HOMO level of the guest by 0.1 eV or more.

公开(公告)号：US20210347782A1

公开(公告)日：2021-11-11

申请号：US16090477

申请日：2018-02-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

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

Abstract: 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：US20210184130A1

公开(公告)日：2021-06-17

申请号：US17116031

申请日：2020-12-09

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

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

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

Abstract: 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：US20210005669A1

公开(公告)日：2021-01-07

申请号：US16914530

申请日：2020-06-29

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

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

Abstract: 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：US20190074450A1

公开(公告)日：2019-03-07

申请号：US16169108

申请日：2018-10-24

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Harue OSAKA ,  Takako TAKASU ,  Hiroshi KADOMA ,  Yuko KAWATA ,  Satoko SHITAGAKI ,  Hiromi NOWATARI ,  Tsunenori SUZUKI ,  Nobuharu OHSAWA ,  Satoshi SEO

IPC: H01L51/00 ,  H01L51/50 ,  C09K11/06 ,  C07D209/86

Abstract: A novel substance with which an increase in life and emission efficiency of a light-emitting element can be achieved is provided. A carbazole compound having a structure represented by General Formula (G1) is provided. Note that a substituent which makes the HOMO level and the LUMO level of a compound in which a bond of the substituent is substituted with hydrogen deep and shallow, respectively is used as each of substituents in General Formula (G1) (R1, R2, Ar3, and α3). Further, a subsistent which makes the band gap (Bg) and the T1 level of a compound in which a bond of the substituent is substituted with hydrogen wide and high is used as each of the substituents in General Formula (G1) (R1, R2, Ar3, and α3).