公开(公告)号：US20220223812A1

公开(公告)日：2022-07-14

申请号：US17612299

申请日：2020-05-18

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takeyoshi Watabe ,  Airi UEDA ,  Nobuharu OHSAWA ,  Satoshi SEO

IPC: H01L51/50

Abstract: A light-emitting device that emits near-infrared light and emits visible light that is less likely to be seen is provided. The light-emitting device contains a light-emitting organic compound and a host material in a light-emitting layer. The maximum peak wavelength in an emission spectrum of the light-emitting device is greater than or equal to 750 nm and less than or equal to 900 nm. A luminance A and a radiance B of the light-emitting device satisfy 0≤A/B≤1.

公开(公告)号：US20220216445A1

公开(公告)日：2022-07-07

申请号：US17552638

申请日：2021-12-16

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiromi SEO ,  Takeyoshi WATABE ,  Airi UEDA ,  Yuta KAWANO ,  Nobuharu OHSAWA ,  Hiromitsu KIDO ,  Satoshi SEO

IPC: H01L51/50 ,  H01L51/00 ,  H01L51/42

Abstract: An organic semiconductor device with low driving voltage is provided. The organic semiconductor device includes a layer containing an organic compound between a pair of electrodes. The layer containing an organic compound includes a hole-transport region. The hole-transport region includes a first layer and a second layer. The first layer is positioned between the anode and the second layer. When a potential gradient of a surface potential of an evaporated film is set as GSP (mV/nm), a value obtained by subtracting GSP of an organic compound in the second layer from GSP of an organic compound in the first layer is less than or equal to 20 (mV/nm).

公开(公告)号：US20220123231A1

公开(公告)日：2022-04-21

申请号：US17500114

申请日：2021-10-13

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroshi KADOMA ,  Satoshi SEO ,  Harue OSAKA ,  Tsunenori SUZUKI

IPC: H01L51/00 ,  C07D209/80 ,  C09K11/06 ,  C07D209/86

Abstract: A novel light-emitting device that is highly convenient, useful, or reliable is provided. An organic compound in which a substituted or unsubstituted naphtho[2,3-c]carbazolyl group or a substituted or unsubstituted benzo[c]naphtho[2,3-g]carbazolyl group is bonded to a substituted or unsubstituted 9H-carbazolyl group or a substituted or unsubstituted anthryl group through a substituted or unsubstituted arylene group. The arylene group has 6 to 13, inclusive, carbon atoms.

公开(公告)号：US20220085126A1

公开(公告)日：2022-03-17

申请号：US17532302

申请日：2021-11-22

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

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

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：US20220069258A1

公开(公告)日：2022-03-03

申请号：US17435452

申请日：2020-02-24

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takeyoshi Watabe ,  Airi UEDA ,  Nobuharu OHSAWA ,  Satoshi SEO

IPC: H01L51/52 ,  H01L51/00

Abstract: A light-emitting device is provided. The light-emitting device includes an intermediate layer, a first light-emitting unit, and a second light-emitting unit. The intermediate layer includes a region interposed between the first light-emitting unit and the second light-emitting unit. The intermediate layer has a function of supplying an electron to one of the first light-emitting unit and the second light-emitting unit and supplying a hole to the other. The first light-emitting unit includes a first light-emitting layer, the first light-emitting layer includes a first light-emitting material, the second light-emitting unit includes a second light-emitting layer, the second light-emitting layer includes a second light-emitting material, the second light-emitting layer has a first distance from the first light-emitting layer, and the first distance is longer than or equal to 5 nm and shorter than or equal to 65 nm.

公开(公告)号：US20210336176A1

公开(公告)日：2021-10-28

申请号：US17237262

申请日：2021-04-22

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: H01L51/50 ,  H01L27/32

Abstract: A light-emitting device with high emission efficiency is provided. The light-emitting device includes an anode, a cathode, and an EL layer positioned between the anode and the cathode. The EL layer includes a light-emitting layer and an electron-transport layer; the light-emitting layer includes a light-emitting material; the electron-transport layer includes an organic compound having an electron-transport property and a metal complex of an alkali metal; the ordinary refractive index of the organic compound having an electron-transport property in a peak wavelength of light emitted from the light-emitting material is greater than or equal to 1.50 and less than or equal to 1.75; and the ordinary refractive index of the metal complex of an alkali metal in the peak wavelength of the light emitted from the light-emitting material is greater than or equal to 1.45 and less than or equal to 1.70.

公开(公告)号：US20210257565A1

公开(公告)日：2021-08-19

申请号：US17241695

申请日：2021-04-27

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：US20210206767A1

公开(公告)日：2021-07-08

申请号：US17133254

申请日：2020-12-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takuya HARUYAMA ,  Nobuharu OHSAWA ,  Satoshi SEO

IPC: C07D471/14 ,  H01L51/00

Abstract: A novel compound is provided. The novel compound is represented by General Formula (G1). Each of A1 and A2 independently represents a substituted or unsubstituted condensed aromatic ring, a substituted or unsubstituted condensed heteroaromatic ring, or a structure represented by Formula (Z-1) or (Z-2); and each of Z1 and Z2 independently has a structure represented by Formula (Z-1) or (Z-2). Each of X1 and X2 independently represents any one of an alkyl group, a cycloalkyl group, a substituted or unsubstituted cycloalkyl group having a bridge structure, and a trialkylsilyl group. Each of Ar1 and Ar2 independently represents a substituted or unsubstituted aromatic hydrocarbon group, and at least one of Ar1 and Ar2 includes the same substituent as X1. Each of R1 to R16 independently represents any one of hydrogen, an alkyl group, a substituted or unsubstituted cycloalkyl group, a trialkylsilyl group, and a substituted or unsubstituted aryl group.

公开(公告)号：US20210193943A1

公开(公告)日：2021-06-24

申请号：US16757833

申请日：2018-10-18

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Nobuharu Ohsawa ,  Satoshi SEO

IPC: H01L51/50 ,  G06F3/041 ,  H01L51/00 ,  C09K11/06

Abstract: An object is to provide a light-emitting element with high emission efficiency. The light-emitting element contains first to third organic compounds. The first organic compound has a function of converting triplet excitation energy into light. The second organic compound has a benzofuropyrimidine skeleton or a benzothienopyrimidine skeleton. The third organic compound is a fluorescent compound. Light emitted from the light-emitting element is light emitted from the third organic compound that receives excitation energy from the first organic compound or from an exciplex formed by the first and second organic compounds.

公开(公告)号：US20210193930A1

公开(公告)日：2021-06-24

申请号：US17116222

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 ,  C07D209/88 ,  C07D405/12

Abstract: A novel organic compound represented by General Formula (G1) is provided. In General Formula (G1), X1 and X2 each independently represent a secondary or tertiary alkyl group having 3 to 6 carbon atoms and having a branched carbon atom which is bonded to a phenyl group. In addition, Ar1 represents a substituted or unsubstituted condensed aromatic ring skeleton having 10 to 60 carbon atoms and composed of two or more rings or a substituted or unsubstituted condensed heteroaromatic ring skeleton having 8 to 60 carbon atoms and composed of two or more rings. Furthermore, Ar2 represents a substituted or unsubstituted aryl group having 6 to 25 carbon atoms. Moreover, n represents any of 1 to 3, and in the case where n is 2 or more, two or more groups bonded to Ar1 may be identical or different.