公开(公告)号：US20230157042A1

公开(公告)日：2023-05-18

申请号：US18100054

申请日：2023-01-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO ,  Nobuharu OHSAWA ,  Shunsuke HOSOUMI ,  Takahiro ISHISONE

IPC: H10K50/11

CPC classification number: H10K50/11 ,  H10K2101/10 ,  H10K2101/30

Abstract: A light-emitting element having high emission efficiency which includes a fluorescent material as a light-emitting substance is provided. A light-emitting element includes a pair of electrodes and an EL layer between the pair of electrodes. The EL layer includes a light-emitting layer. The light-emitting layer includes a host material and a guest material. The host material has a difference of more than 0 eV and less than or equal to 0.2 eV between a singlet excitation energy level and a triplet excitation energy level. The guest material is capable of emitting fluorescence. The triplet excitation energy level of the host material is higher than a triplet excitation energy level of the guest material.

公开(公告)号：US20230146354A1

公开(公告)日：2023-05-11

申请号：US17819429

申请日：2022-08-12

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Sachiko KAWAKAMI ,  Kaori OGITA ,  Nozomi KOMATSU ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO ,  Satoshi SEO ,  Kyoko TAKEDA

IPC: H01L51/00

CPC classification number: H01L51/0074 ,  H01L51/0073 ,  H01L51/5016

Abstract: A light-emitting device including at least a light-emitting layer between an anode and a cathode; the light-emitting layer contains at least a light-emitting substance; the light-emitting substance is a substance emitting fluorescent light; a first organic compound represented by General Formula (G1) is included between the anode and the cathode;




in General Formula (G1), Ar1 represents a substituted or unsubstituted fluorenyl group, Ar2 represents a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, and A1 represents a substituted or unsubstituted dibenzofuranyl group or a substituted or unsubstituted dibenzothiophenyl group; when at least one of Ar1, Ar2, and A1 has one or more substituents, the substituents each independently represent an alkyl group having 1 to 4 carbon atoms or an aryl group having 6 to 13 carbon atoms. The aryl group exclude a heteroaryl group. The substituents may be bonded to each other to form a ring.

公开(公告)号：US20230095876A1

公开(公告)日：2023-03-30

申请号：US17969363

申请日：2022-10-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Takeyoshi WATABE ,  Tomohiro KUBOTA ,  Airi UEDA ,  Satoshi SEO ,  Nobuharu OHSAWA ,  Yuko KUBOTA

IPC: H01L51/50 ,  H01L51/00

Abstract: A light-emitting apparatus with low power consumption is provided. A light-emitting apparatus including a first light-emitting device and a first color conversion layer. The first light-emitting device includes an anode, a cathode, and an EL layer positioned between the anode and the cathode. The EL layer includes a layer including a material with a refractive index lower than or equal to 1.75 at 467 nm. The first color conversion layer includes a first substance capable of emission by absorbing light. Light emitted from the first light-emitting device enters the first color conversion layer.

公开(公告)号：US20230027613A1

公开(公告)日：2023-01-26

申请号：US17893355

申请日：2022-08-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tomoya YAMAGUCHI ,  Hideko YOSHIZUMI ,  Hiromitsu KIDO ,  Airi UEDA ,  Satoshi SEO

IPC: H01L51/00 ,  C07D491/048

Abstract: A novel organic compound is provided. That is, a novel organic compound that is effective in improving element characteristics and reliability is provided. The organic compound is represented by General Formula (G1) having a dibenzobenzofuroquinoxaline skeleton or a dibenzobenzothienoquinoxaline skeleton. In General Formula (G1), Q represents O or S, at least one of R1 to R12 represents a first group having a substituted or unsubstituted condensed aromatic ring or condensed heteroaromatic ring having 3 to 30 carbon atoms, and the other or others of R1 to R12 each independently represent any one of hydrogen, a halogeno group, a hydroxy group, an amino group, a nitro group, and a group having 1 to 50 carbon atoms.

公开(公告)号：US20220388958A1

公开(公告)日：2022-12-08

申请号：US17861363

申请日：2022-07-11

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiroko NOMURA ,  Harue OSAKA ,  Takahiro USHIKUBO ,  Sachiko KAWAKAMI ,  Satoshi SEO ,  Satoko SHITAGAKI

IPC: C07D209/86 ,  H01L51/00

Abstract: To provide a light-emitting element having high luminous efficiency and to provide a light-emitting device and an electronic device which consumes low power and is driven at low voltage, a carbazole derivative represented by the general formula (1) is provided. In the formula, α1, α2, α3, and α4 each represent an arylene group having less than or equal to 13 carbon atoms; Ar1 and Ar2 each represent an aryl group having less than or equal to 13 carbon atoms; R1 represents any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group; and R2 represents any of an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group. In addition, l, m, and n are each independently 0 or 1.

公开(公告)号：US20220231248A1

公开(公告)日：2022-07-21

申请号：US17603692

申请日：2020-04-07

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Satoshi SEO ,  Harue OSAKA

IPC: H01L51/50

Abstract: A display device having a long lifetime is provided. The display device includes a first light-emitting device and a second light-emitting device. The first light-emitting device includes a first electrode and a common electrode. The second light-emitting device includes a second electrode and a common electrode. The first light-emitting device includes a first light-emitting layer and an electron-transport layer in this order from a side of one of the first electrode and the common electrode which functions as an anode. The second light-emitting device includes a second light-emitting layer between the second electrode and the common electrode. The first light-emitting layer contains a first organic compound emitting light of a first color. The second light-emitting layer contains a second organic compound emitting light of a second color. The electron-transport layer contains a third organic compound and a first substance. The third organic compound is an electron-transport material. The first substance is a metal, a metallic salt, a metal oxide, or an organometallic salt. The electron-transport layer includes a first region and a second region which differ in a concentration of the first substance.

公开(公告)号：US20220140273A1

公开(公告)日：2022-05-05

申请号：US17431246

申请日：2020-02-14

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei YAMAZAKI ,  Satoshi SEO ,  Harue OSAKA

IPC: H01L51/50 ,  H01L27/32 ,  H01L51/00 ,  H01L51/56

Abstract: A display device having a long lifetime is provided. A large-sized display device is provided. A display device includes a first light-emitting device and a second light-emitting device. The first light-emitting device includes a hole-injection layer, a first light-emitting layer, and an electron-transport layer. The second light-emitting device includes a second light-emitting layer. The hole-injection layer contains a first compound and a second compound. The first light-emitting layer contains a third compound that emits light of a first color. The second light-emitting layer contains a fourth compound that emits light of a second color. The electron-transport layer contains a fifth compound. The first compound has a property of accepting electrons from the second compound. The second compound has a HOMO level higher than or equal to −5.7 eV and lower than or equal to −5.4 eV. The fifth compound has a HOMO level higher than or equal to −6.0 eV and an electron mobility higher than or equal to 1×10{circumflex over ( )}−7 cm{circumflex over ( )}/Vs and lower than or equal to 5×10{circumflex over ( )}−5 cm{circumflex over ( )}/Vs when the square root of electric field strength [V/cm] is 600.

公开(公告)号：US20220077391A1

公开(公告)日：2022-03-10

申请号：US17412450

申请日：2021-08-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Nobuharu OHSAWA ,  Satoshi SEO ,  Takeyoshi WATABE ,  Airi UEDA ,  Tomohiro KUBOTA ,  Takashi HIRAHARA

IPC: H01L51/00 ,  C07C211/61

Abstract: A light-emitting device with high emission efficiency and low driving voltage is provided. A light-emitting apparatus, an electronic device, and a lighting device with low power consumption are provided. The following organic compound is provided: the organic compound has an arylamine structure; and when the organic compound is deposited to be a film, the ordinary refractive index of the deposited film with respect to light with a wavelength of 458 nm is greater than or equal to 1.50 and less than or equal to 1.75, the birefringence Δn of the deposited film with respect to light with a wavelength of 458 nm is greater than or equal to 0 and less than or equal to 0.008, or the alignment order parameter of the deposited film with respect to light with a wavelength corresponding to the longest wavelength where an absorption peak appears in the absorption spectrum is greater than or equal to −0.07 and less than or equal to 0.00.

公开(公告)号：US20220029105A1

公开(公告)日：2022-01-27

申请号：US17276289

申请日：2019-09-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tomoka HARA ,  Keito TOSU ,  Hideko YOSHIZUMI ,  Toshiki SASAKI ,  Hiromitsu KIDO ,  Satoshi SEO

IPC: H01L51/00 ,  C07D519/00 ,  C07D491/048 ,  C07D495/04

Abstract: A novel organic compound, a benzofuropyrimidine derivative or a benzothienopyrimidine derivative is provided. The organic compound has a structure in which a benzothienocarbazolyl ring, a benzofurocarbazolyl ring, an indolocarbazolyl ring, or an indenocarbazolyl ring is bonded to the 8-position of a benzofuropyrimidine ring or a benzothienopyrimidine ring directly or through an aromatic hydrocarbon ring. That is, the organic compound is represented by General Formula (G1) below.

公开(公告)号：US20220028937A1

公开(公告)日：2022-01-27

申请号：US17496909

申请日：2021-10-08

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Nobuharu OHSAWA ,  Satoshi SEO ,  Toshiki SASAKI

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

Abstract: One object of this invention is to provide a novel light-emitting device with low power consumption. The light-emitting device includes a first light-emitting element and a second light-emitting element. The first light-emitting element includes a first electrode, a second electrode, and a light-emitting layer. The second light-emitting element includes the first electrode, a third electrode, and the light-emitting layer. The second electrode comprises only a first conductive film, and the third electrode comprises a second conductive film and a third conductive film. The first electrode has a function of reflecting light. The second conductive film has functions of reflecting light and transmitting light. The first conductive film and the third conductive film each have a function of transmitting light.