公开(公告)号：US20190027542A1

公开(公告)日：2019-01-24

申请号：US16139126

申请日：2018-09-24

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takeyoshi WATABE ,  Satomi MITSUMORI ,  Nobuharu OHSAWA ,  Harue OSAKA ,  Kunihiko SUZUKI ,  Satoshi SEO

IPC: H01L27/32 ,  H01L51/50

Abstract: Providing a light-emitting element emitting light in a broad emission spectrum. A combination of a first organic compound and a second organic compound forms an exciplex. The first organic compound has a function of converting triplet-excitation energy into light emission. The lowest triplet excitation level of the second organic compound is higher than or equal to the lowest triplet excitation level of the first organic compound, and the lowest triplet excitation level of the first organic compound is higher than or equal to the lowest triplet excitation level of the exciplex. Light emission from a light-emitting layer includes light emission from the first organic compound and light emission from the exciplex.

公开(公告)号：US20170186980A1

公开(公告)日：2017-06-29

申请号：US15392135

申请日：2016-12-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takeyoshi Watabe ,  Satoko SHITAGAKI ,  Kunihiko SUZUKI ,  Harue OSAKA ,  Satomi MITSUMORI ,  Satoshi SEO

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

CPC classification number: H01L51/0074 ,  C09K11/025 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1059 ,  C09K2211/185 ,  H01L27/322 ,  H01L27/323 ,  H01L51/0061 ,  H01L51/0067 ,  H01L51/0072 ,  H01L51/0085 ,  H01L51/5012 ,  H01L51/5016

Abstract: A light-emitting element with high emission efficiency and high reliability is provided. The light-emitting element includes a light-emitting layer containing a first organic compound, a second organic compound, and a guest material. The first organic compound has a nitrogen-containing six-membered heteroaromatic skeleton. In the light-emitting layer, the weight ratio of an organic compound having a nitrogen-containing five-membered heterocyclic skeleton with an NH group, a secondary amine skeleton with an NH group, or a primary amine skeleton with an NH group to the first organic compound is less than or equal to 0.03, or alternatively, the weight ratio of the organic compound having a nitrogen-containing five-membered heterocyclic skeleton with an NH group, a secondary amine skeleton with an NH group, or a primary amine skeleton with an NH group to the second organic compound is less than or equal to 0.01.

公开(公告)号：US20170069852A1

公开(公告)日：2017-03-09

申请号：US15256000

申请日：2016-09-02

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Miki KANAMOTO ,  Takeyoshi WATABE ,  Hideko INOUE ,  Satoshi SEO ,  Satomi MITSUMORI ,  Tatsuyoshi TAKAHASHI

IPC: H01L51/00 ,  C09K11/06 ,  C07F15/00 ,  C07D491/048

CPC classification number: H01L51/0072 ,  C07D491/048 ,  C07F15/0033 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1044 ,  C09K2211/1048 ,  C09K2211/1059 ,  C09K2211/185 ,  H01L27/322 ,  H01L27/323 ,  H01L51/0071 ,  H01L51/0085 ,  H01L51/5012 ,  H01L51/5016 ,  H01L51/5056 ,  H01L51/5072

Abstract: Provided is a novel compound or a light-emitting element with high emission efficiency. The provided novel compound includes a bicarbazole skeleton and a benzofuropyrimidine skeleton or a benzothienopyrimidine skeleton. The provided light-emitting element includes the compound.

Abstract translation: 提供了具有高排放效率的新型化合物或发光元件。 所提供的新化合物包括咔唑骨架和苯并呋喃并嘧啶骨架或苯并噻吩并嘧啶骨架。 所提供的发光元件包括该化合物。

公开(公告)号：US20170040553A1

公开(公告)日：2017-02-09

申请号：US15223176

申请日：2016-07-29

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takeyoshi WATABE ,  Satoshi SEO ,  Satomi MITSUMORI

IPC: H01L51/00 ,  H01L27/32 ,  G06F3/044 ,  C09K11/02 ,  C09K11/06 ,  C07F15/00 ,  H01L51/50 ,  H01L51/52

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.

Abstract translation: 提供发光效率高，驱动电压低的发光元件。 发光元件包括客体材料和主体材料。 主体材料的LUMO含量高于主体材料的LUMO含量，并且客体材料的HOMO能级低于主体材料的HOMO能级。 客体材料具有将三重态激发能转换成发光的功能。 单重激发能级与主体材料的三线态激发能级之间的差异大于0eV且小于或等于0.2eV。 主体材料的LUMO能级和HOMO能级之间的能量差大于或等于客体材料的发光能量。

公开(公告)号：US20160372688A1

公开(公告)日：2016-12-22

申请号：US15181605

申请日：2016-06-14

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO ,  Takeyoshi WATABE ,  Hideko INOUE ,  Yui YAMADA ,  Satomi MITSUMORI ,  Tatsuyoshi TAKAHASHI ,  Tomoka HARA

IPC: H01L51/00 ,  C09K11/02 ,  C09K11/06 ,  H01L51/50 ,  C07F15/00

CPC classification number: H01L51/0085 ,  C07F15/0033 ,  C09K11/025 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1059 ,  C09K2211/185 ,  H01L51/0067 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/5012 ,  H01L51/5016 ,  H01L2251/5346 ,  H01L2251/5384 ,  H01L2251/552

Abstract: Provided is a light-emitting element with high emission efficiency. The light-emitting element includes a first organic compound, a second organic compound, and a guest material. The LUMO level of the first organic compound is lower than that of the second organic compound, and the HOMO level of the first organic compound is lower than that of the second organic compound. The LUMO level of a guest material is higher than that of the first organic compound, and the HOMO level of the guest material is lower than that of the second organic compound. The guest material has a function of converting triplet excitation energy into light emission. The first organic compound and the second organic compound form an exciplex.

Abstract translation: 具有发光效率高的发光元件。 发光元件包括第一有机化合物，第二有机化合物和客体材料。 第一有机化合物的LUMO含量低于第二有机化合物，第一有机化合物的HOMO含量低于第二有机化合物。 客体材料的LUMO含量高于第一有机化合物，客体材料的HOMO含量低于第二有机化合物。 客体材料具有将三重态激发能转换成发光的功能。 第一有机化合物和第二有机化合物形成激元复合物。

公开(公告)号：US20160336517A1

公开(公告)日：2016-11-17

申请号：US15152232

申请日：2016-05-11

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tomoya Hirose ,  Harue OSAKA ,  Takeyoshi WATABE ,  Satomi MITSUMORI ,  Yuko KUBOTA ,  Satoshi SEO

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

CPC classification number: H01L51/0071 ,  C07D491/048 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1059 ,  C09K2211/185 ,  H01L27/1248 ,  H01L51/0072 ,  H01L51/0085 ,  H01L51/5016

Abstract: Provided is a novel substance that can be used in an element capable of emitting phosphorescence, a novel substance that contributes to high emission efficiency, or a novel substance that contributes to light emission with high color purity. A light-emitting element includes a pair of electrodes and an EL layer between the pair of electrodes. The EL layer includes a substance including a carbazole skeleton. The substance is bonded to a substituted or unsubstituted first arylene group through a nitrogen atom included in the carbazole skeleton. The first arylene group is bonded to a substituted or unsubstituted benzofuropyridyl group or a substituted or unsubstituted benzothienopyridyl group. The first arylene group includes 1 to 5 substituted or unsubstituted second arylene groups which are bonded to one another. The EL layer may further include a layer including an emission center substance, specifically an iridium compound.

Abstract translation: 提供了可用于能够发射磷光的元素，有助于高发光效率的新物质或有助于高色纯度的发光的新型物质的新型物质。 发光元件包括一对电极和一对电极之间的EL层。 EL层包括含有咔唑骨架的物质。 该物质通过包含在咔唑骨架中的氮原子与取代或未取代的第一亚芳基结合。 第一亚芳基与取代或未取代的苯并呋喃基或取代或未取代的苯并噻吩并吡啶基结合。 第一亚芳基包括彼此结合的1至5个取代或未取代的第二亚芳基。 EL层还可以包括包含发射中心物质，特别是铱化合物的层。