公开(公告)号：US20210057667A1

公开(公告)日：2021-02-25

申请号：US17052245

申请日：2019-04-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Nobuharu OHSAWA ,  Satoshi SEO

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

Abstract: A light-emitting element with high emission efficiency and high reliability is provided. The light-emitting element includes a light-emitting layer that contains a material serving as an energy donor and a light-emitting material. The material serving as an energy donor has a function of converting triplet excitation energy into light emission and the light-emitting material emits fluorescence. The light-emitting material has a molecular structure that includes a luminophore and protecting groups; one molecule of a guest material includes 5 or more protecting groups. Introduction of protecting groups in a molecule inhibits the energy transfer of triplet excitation energy from the material serving as an energy donor to the light-emitting material by the Dexter mechanism. An alkyl group or a branched-chain alkyl group is used as the protecting group. Light emission is obtained from both the light-emitting material and the material serving as an energy donor.

公开(公告)号：US20210013421A1

公开(公告)日：2021-01-14

申请号：US17010095

申请日：2020-09-02

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hideko Inoue ,  Tomoka HARA ,  Yasushi KITANO ,  Hiromi SEO ,  Tatsuyoshi TAKAHASHI ,  Satoshi SEO

IPC: H01L51/00 ,  C07D239/26 ,  C07D251/24 ,  C09K11/06

Abstract: Provided is a novel heterocyclic compound, a novel heterocyclic compound that can be used in a light-emitting element, or a highly reliable light-emitting device, electronic device, and lighting device in each of which the light-emitting element using the novel heterocyclic compound is used. One embodiment of the present invention is a heterocyclic compound represented by General Formula (G1). In General Formula (G1), each of A1 and A2 independently represents nitrogen or carbon bonded to hydrogen, and at least one of A1 and A2 represents nitrogen; Ar represents a substituted or unsubstituted arylene group having 6 to 18 carbon atoms; B represents a substituted or unsubstituted fluorenyl group; and R1 represents hydrogen, an alkyl group having 1 to 6 carbon atoms, or an aryl group having 6 to 13 carbon atoms.

公开(公告)号：US20200321544A1

公开(公告)日：2020-10-08

申请号：US16906552

申请日：2020-06-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hideko Inoue ,  Tomoya YAMAGUCHI ,  Hiromi SEO ,  Satoshi SEO ,  Kunihiko SUZUKI ,  Miki KANAMOTO

IPC: H01L51/00 ,  C09K11/06 ,  H05B33/10 ,  C07F15/00 ,  C09K11/02

Abstract: As a novel substance having a novel skeleton, an organometallic complex with high emission efficiency which achieves improved color purity by a reduction of half width of an emission spectrum is provided. One embodiment of the present invention is an organometallic complex in which a β-diketone and a six-membered heteroaromatic ring including two or more nitrogen atoms inclusive of a nitrogen atom that is a coordinating atom are ligands. In General Formula (G1), X represents a substituted or unsubstituted six-membered heteroaromatic ring including two or more nitrogen atoms inclusive of a nitrogen atom that is a coordinating atom. Further, R1 to R4 each represent a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms.

公开(公告)号：US20200295267A1

公开(公告)日：2020-09-17

申请号：US16809951

申请日：2020-03-05

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Miki KANAMOTO ,  Hideko INOUE ,  Tatsuyoshi TAKAHASHI ,  Hiromitsu KIDO ,  Satoshi SEO

IPC: H01L51/00 ,  C07D491/048 ,  C09K11/06

Abstract: A compound includes a benzofuropyrimidine skeleton or a benzothienopyrimidine skeleton, a first substituent, and a second substituent. Each of the first substituent and the second substituent includes a furan skeleton, a thiophene skeleton, or a pyrrole skeleton. The first substituent is bonded to a pyrimidine ring included in the benzofuropyrimidine skeleton or a pyrimidine ring included in the benzothienopyrimidine skeleton. The second substituent is bonded to a benzene ring included in the benzofuropyrimidine skeleton or a benzene ring included in the benzothienopyrimidine skeleton. The light-emitting element includes the compound.

公开(公告)号：US20200243482A1

公开(公告)日：2020-07-30

申请号：US16845386

申请日：2020-04-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daiki NAKAMURA ,  Yusuke NISHIDO ,  Satoshi SEO ,  Toshiki SASAKI ,  Ryohei YAMAOKA ,  Akihiro KAITA

IPC: H01L25/065 ,  H01L27/32

Abstract: A display panel includes a plurality of light-emitting elements. Light emitted from a first light-emitting element has a CIE 1931 chromaticity coordinate x of greater than 0.680 and less than or equal to 0.720 and a CIE 1931 chromaticity coordinate y of greater than or equal to 0.260 and less than or equal to 0.320. Light emitted from a second light-emitting element has a CIE 1931 chromaticity coordinate x of greater than or equal to 0.130 and less than or equal to 0.250 and a CIE 1931 chromaticity coordinate y of greater than 0.710 and less than or equal to 0.810. Light emitted from a third light-emitting element has a CIE 1931 chromaticity coordinate x of greater than or equal to 0.120 and less than or equal to 0.170 and a CIE 1931 chromaticity coordinate y of greater than or equal to 0.020 and less than 0.060.

公开(公告)号：US20200148640A1

公开(公告)日：2020-05-14

申请号：US16741830

申请日：2020-01-14

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 α1 each represent an azylene stoup 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：US20200098997A1

公开(公告)日：2020-03-26

申请号：US16473053

申请日：2017-12-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takeyoshi WATABE ,  Satoshi SEO ,  Nozomi KOMATSU ,  Ryohei YAMAOKA ,  Harue OSAKA ,  Kunihiko SUZUKI ,  Shunsuke HOSOUMI

IPC: H01L51/00

Abstract: A highly reliable light-emitting element having high emission efficiency is provided. The light-emitting element includes a light-emitting layer including a first organic compound and a guest material. The first organic compound has a substituted or unsubstituted carbazole skeleton. In the light-emitting layer, the weight ratio of a hydrocarbon group substitution product in which at least one of hydrogen atoms in the first organic compound is substituted by a hydrocarbon group having 1 to 6 carbon atoms to the first organic compound is greater than 0 and less than or equal to 0.1.

公开(公告)号：US20190229278A1

公开(公告)日：2019-07-25

申请号：US16249209

申请日：2019-01-16

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：US20190229168A1

公开(公告)日：2019-07-25

申请号：US16371583

申请日：2019-04-01

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kaoru HATANO ,  Satoshi SEO ,  Takaaki NAGATA ,  Tatsuya OKANO

IPC: H01L27/32 ,  H01L27/12 ,  H01L29/786 ,  H01L51/52 ,  H01L33/48 ,  H01L51/00

Abstract: It is an object to provide a flexible light-emitting device with long lifetime in a simple way and to provide an inexpensive electronic device with long lifetime using the flexible light-emitting device. A flexible light-emitting device is provided, which includes a substrate having flexibility and a light-transmitting property with respect to visible light; a first adhesive layer over the substrate; an insulating film containing nitrogen and silicon over the first adhesive layer; a light-emitting element including a first electrode, a second electrode facing the first electrode, and an EL layer between the first electrode and the second electrode; a second adhesive layer over the second electrode; and a metal substrate over the second adhesive layer, wherein the thickness of the metal substrate is 10 μm to 200 μm inclusive. Further, an electronic device using the flexible light-emitting device is provided.

公开(公告)号：US20190189936A1

公开(公告)日：2019-06-20

申请号：US16271967

申请日：2019-02-11

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takeyoshi WATABE ,  Satoshi SEO ,  Satomi MITSUMORI

IPC: H01L51/00 ,  C09K11/02 ,  G06F3/041 ,  H01L51/50 ,  G09G3/3225 ,  C07F15/00 ,  C09K11/06 ,  H05B33/14 ,  G06F3/044

CPC classification number: H01L51/0085 ,  C07F15/0033 ,  C09K11/025 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1059 ,  C09K2211/185 ,  G06F3/0416 ,  G06F3/044 ,  G06F2203/04111 ,  G09G3/3225 ,  G09G2300/0426 ,  G09G2300/0452 ,  G09G2300/0809 ,  G09G2310/0267 ,  G09G2310/0272 ,  G09G2310/08 ,  G09G2330/021 ,  G09G2330/04 ,  G09G2380/02 ,  H01L51/0067 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/008 ,  H01L51/009 ,  H01L51/0097 ,  H01L51/5004 ,  H01L51/5012 ,  H01L51/5016 ,  H01L51/5028 ,  H01L51/524 ,  H01L2251/5384 ,  H01L2251/552 ,  H05B33/14

Abstract: To provide a light-emitting element with high emission efficiency and low driving voltage. The light-emitting element includes a guest material and a host material. A LUMO level of the host material is higher than a LUMO level of the host material, and a HOMO level of the guest material is lower than a HOMO level of the host material. The guest material has a function of converting triplet excitation energy into light emission. The difference between a singlet excitation energy level and a triplet excitation energy level of the host material is greater than 0 eV and less than or equal to 0.2 eV. The energy difference between the LUMO level and the HOMO level of the host material is larger than or equal to light emission energy of the guest material.