公开(公告)号：US20180287074A1

公开(公告)日：2018-10-04

申请号：US15996602

申请日：2018-06-04

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Sachiko KAWAKAMI ,  Yoshimi ISHIGURO ,  Tatsuyoshi TAKAHASHI ,  Takao HAMADA ,  Hiromi SEO ,  Satoshi SEO

IPC: H01L51/00 ,  C09K11/02 ,  C07D493/04 ,  H01L51/50

CPC classification number: H01L51/0073 ,  C07D493/04 ,  C09K11/025 ,  H01L51/0059 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0085 ,  H01L51/5016 ,  H01L2251/5384

Abstract: A novel heterocyclic compound is provided. In particular, a novel heterocyclic compound which can improve the element characteristics of the light-emitting element is provided. The heterocyclic compound is represented by a general formula (G1) DBqAr1nAr2-A  (G1) in which a substituted or unsubstituted dibenzo[f,h]quinoxalinyl group and a substituted or unsubstituted benzobisbenzofuranyl group are bonded to each other via a substituted or unsubstituted arylene group. In the general formula (G1), DBq represents a substituted or unsubstituted dibenzo[f,h]quinoxalinyl group, Ar1 represents a substituted or unsubstituted arylene group having 6 to 13 carbon atoms, n represents 0 or 1, Ar2 represents a substituted or unsubstituted arylene group having 6 to 13 carbon atoms, and A represents a substituted or unsubstituted benzobisbenzofuranyl group. When the arylene group represented by Ar1 and Ar2 has substituents, the substituents may be bonded to each other to form a ring.

公开(公告)号：US20180240993A1

公开(公告)日：2018-08-23

申请号：US15954681

申请日：2018-04-17

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO ,  Takahiro ISHISONE ,  Nobuharu OHSAWA ,  Yusuke NONAKA ,  Toshiki SASAKI

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

Abstract: Emission efficiency of a light-emitting element is improved. The light-emitting element has a pair of electrodes and an EL layer between the pair of electrodes. The EL layer includes a first light-emitting layer and a second light-emitting layer. The first light-emitting layer includes a fluorescent material and a host material. The second light-emitting layer includes a phosphorescent material, a first organic compound, and a second organic compound. An emission spectrum of the second light-emitting layer has a peak in a yellow wavelength region. The first organic compound and the second organic compound form an exciplex.

公开(公告)号：US20180123125A1

公开(公告)日：2018-05-03

申请号：US15856281

申请日：2017-12-28

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takahiro KAWAKAMI ,  Tatsuya IKENUMA ,  Satoshi SEO

IPC: H01M4/36 ,  H01M4/505 ,  H01M4/131 ,  H01M4/02 ,  H01M10/0525

CPC classification number: H01M4/366 ,  H01M4/131 ,  H01M4/364 ,  H01M4/505 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2220/30

Abstract: The volume density or weight density of lithium ions that can be received and released in and from a positive electrode active material is increased to achieve high capacity and high energy density of a secondary battery. In a lithium manganese composite oxide, each particle includes a first region including a crystal with a layered rock-salt crystal structure and a second region including a crystal with a spinel crystal structure. The second region is in contact with the outside of the first region. The lithium manganese composite oxide has high structural stability and high capacity.

公开(公告)号：US20180108854A1

公开(公告)日：2018-04-19

申请号：US15726751

申请日：2017-10-06

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Satoshi SEO ,  Yoshiharu HIRAKATA ,  Takahiro ISHISONE

IPC: H01L51/50 ,  H05B33/20 ,  H05B33/14 ,  C09K11/06 ,  F21S6/00 ,  F21S8/04 ,  H01L33/50

CPC classification number: H01L51/504 ,  B60Q3/10 ,  B60Q3/208 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1044 ,  C09K2211/1059 ,  C09K2211/185 ,  F21S6/002 ,  F21S8/04 ,  F21Y2115/10 ,  H01L33/502 ,  H01L33/504 ,  H01L51/5016 ,  H05B33/14 ,  H05B33/145 ,  H05B33/20

Abstract: An object is to provide a light-emitting element which uses a plurality of kinds of light-emitting dopants and has high emission efficiency. In one embodiment of the present invention, a light-emitting device, a light-emitting module, a light-emitting display device, an electronic device, and a lighting device each having reduced power consumption by using the above light-emitting element are provided. Attention is paid to Förster mechanism, which is one of mechanisms of intermolecular energy transfer. Efficient energy transfer by Förster mechanism is achieved by making an emission wavelength of a molecule which donates energy overlap with a local maximum peak on the longest wavelength side of a graph obtained by multiplying an absorption spectrum of a molecule which receives energy by a wavelength raised to the fourth power.

公开(公告)号：US20180053903A1

公开(公告)日：2018-02-22

申请号：US15674943

申请日：2017-08-11

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroki SUZUKI ,  Tomoya YAMAGUCHI ,  Hideko YOSHIZUMI ,  Satoshi SEO ,  Tatsuyoshi TAKAHASHI ,  Hiromitsu KIDO ,  Satomi WATABE

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

Abstract: A novel organic compound is provided. That is, a novel organic compound that is effective in improving the element characteristics and reliability is provided. The organic compound has a benzofuroquinoxaline skeleton or a benzothienoquinoxaline skeleton. The organic compound is represented by General Formula (G1). In the formula, Q represents O or S, and each of R1 to R8 independently represents any of hydrogen, a halogeno group, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 12 carbon atoms, and a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms. At least one of R1 to R8 includes a substituted or unsubstituted condensed aromatic or heteroaromatic ring having 3 to 24 carbon atoms.

公开(公告)号：US20180019462A1

公开(公告)日：2018-01-18

申请号：US15646626

申请日：2017-07-11

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroshi KADOMA ,  Teppei OGUNI ,  Satoshi SEO

IPC: H01M4/1393 ,  H01M4/04 ,  H01M10/052 ,  H01M2/16 ,  H01M4/60 ,  H01M4/62 ,  H01M4/1395 ,  H01M4/02

CPC classification number: H01M4/1393 ,  C01B32/194 ,  H01M2/1686 ,  H01M4/0471 ,  H01M4/1395 ,  H01M4/60 ,  H01M4/622 ,  H01M10/052 ,  H01M10/054 ,  H01M10/0562 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2220/30 ,  H01M2300/0065 ,  H01M2300/0068

Abstract: A material that can be used in a wide temperature range and a manufacturing method thereof are provided. A graphene compound has a substituted or unsubstituted chain group. The chain group has one or more ester groups or carboxyl groups and contains a Si atom. The chain group is bonded to a graphene layer through the Si atom. A method for forming a graphene compound includes a step of stirring graphene oxide and a Lewis base and a step of mixing a silicon compound having one or more ester groups or carboxyl groups into the mixed solution and stirring the obtained mixed solution. The Lewis base is butylamine, pentylamine, hexylamine, diethylamine, dipropylamine, dibutylamine, triethylamine, tripropylamine, or pyridine.

公开(公告)号：US20170338289A1

公开(公告)日：2017-11-23

申请号：US15598537

申请日：2017-05-18

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO ,  Toshiki SASAKI ,  Ryohei YAMAOKA

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

CPC classification number: H01L27/3211 ,  H01L27/3206 ,  H01L27/3209 ,  H01L27/3213 ,  H01L27/322 ,  H01L27/3223 ,  H01L27/323 ,  H01L27/3244 ,  H01L51/5016 ,  H01L51/5036 ,  H01L51/5044 ,  H01L51/5218 ,  H01L51/5221 ,  H01L51/5265 ,  H01L51/5275 ,  H01L51/5281

Abstract: Provided is a light-emitting device that can display an image with a wide color gamut or a novel light-emitting element. The light-emitting device includes a plurality of light-emitting elements each of which includes an EL layer between a pair of electrodes. Light obtained from a first light-emitting element through a first color filter has, on chromaticity coordinates (x, y), a chromaticity x of greater than 0.680 and less than or equal to 0.720 and a chromaticity y of greater than or equal to 0.260 and less than or equal to 0.320. Light obtained from a second light-emitting element through a second color filter has, on chromaticity coordinates (x, y), a chromaticity x of greater than or equal to 0.130 and less than or equal to 0.250 and a chromaticity y of greater than 0.710 and less than or equal to 0.810. Light obtained from a third light-emitting element through a third color filter has, on chromaticity coordinates (x, y), a chromaticity x of greater than or equal to 0.120 and less than or equal to 0.170 and a chromaticity y of greater than or equal to 0.020 and less than 0.060.

公开(公告)号：US20170324055A1

公开(公告)日：2017-11-09

申请号：US15498692

申请日：2017-04-27

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takahiro ISHISONE ,  Satoshi SEO

IPC: H01L51/50 ,  H01L51/00

Abstract: A light-emitting element with high luminous efficiency is provided. The light-emitting element contains a first organic compound and a second organic compound. The first and second organic compounds form an exciplex. The first organic compound emits no fluorescence but phosphorescence at a temperature ranging from low temperature to normal temperature. The luminescence quantum yield of the first organic compound is higher than or equal to 0% and lower than or equal to 40% at room temperature. Light emitted from the light-emitting element includes light emitted from an exciplex formed by the first organic compound and the second organic compound.

公开(公告)号：US20170324054A1

公开(公告)日：2017-11-09

申请号：US15495113

申请日：2017-04-24

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takahiro ISHISONE ,  Satoshi SEO

IPC: H01L51/50 ,  C09K11/06 ,  H01L27/32 ,  C09K11/02 ,  H01L51/00

CPC classification number: H01L51/5004 ,  C09K11/025 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1044 ,  C09K2211/185 ,  H01L27/322 ,  H01L27/3244 ,  H01L27/3262 ,  H01L51/0052 ,  H01L51/0054 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0067 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0085 ,  H01L51/5016 ,  H01L51/5028 ,  H01L2251/552

Abstract: A light-emitting element having high luminous efficiency is provided. The light-emitting element includes a first organic compound, a second organic compound, and a third organic compound. The first organic compound and the second organic compound, in combination, are capable of forming an exciplex. The first organic compound is a phosphorescent compound and the third organic compound is a fluorescent compound. Light emitted from the light-emitting element includes light emitted from the third organic compound to which excitation energy is supplied from the exciplex formed by the first organic compound and the second organic compound.

公开(公告)号：US20170294617A1

公开(公告)日：2017-10-12

申请号：US15630340

申请日：2017-06-22

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO ,  Tsunenori SUZUKI ,  Satoko SHITAGAKI

IPC: H01L51/50 ,  H01L51/00

Abstract: Objects of the present invention are to provide: a light-emitting element having a long lifetime and good emission efficiency and drive voltage. One embodiment of the invention is a light-emitting element including, between an anode and a cathode, at least a stack structure in which a first layer, a second layer, and a light-emitting layer are provided in order from the anode side. The first layer includes a first organic compound and an electron-accepting compound. The second layer includes a second organic compound having a HOMO level differing from the HOMO level of the first organic compound by from −0.2 eV to +0.2 eV. The light-emitting layer includes a third organic compound having a HOMO level differing from the HOMO level of the second organic compound by from −0.2 eV to +0.2 eV and a light-emitting substance having a hole-trapping property with respect to the third organic compound.