公开(公告)号：US20240414974A1

公开(公告)日：2024-12-12

申请号：US18696693

申请日：2022-09-20

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takeyoshi WATABE ,  Nobuharu OHSAWA ,  Satoshi SEO

IPC: H10K59/00 ,  H10K59/80

Abstract: A light-emitting apparatus including a light-emitting device A and a light-emitting device B is provided. The light-emitting device A includes a first electrode A, a second electrode A, a light-emitting layer A interposed between the first electrode A and the second electrode A, a first layer A interposed between the first electrode A and the light-emitting layer A, and a second layer A interposed between the first layer A and the light-emitting layer A. The light-emitting device B includes a first electrode B, a second electrode B, a light-emitting layer B interposed between the first electrode B and the second electrode B, a first layer B interposed between the first electrode B and the light-emitting layer B, a second layer B positioned between the first layer B and the light-emitting layer B, and a third layer B interposed between the first electrode B and the light-emitting layer B. The light-emitting layer A contains a light-emitting substance A. The light-emitting layer B contains a light-emitting substance B. The emission peak wavelength of the light-emitting substance A is shorter than the emission peak wavelength of the light-emitting substance B. The first layer A and the first layer B contain the same material. The second layer A and the second layer B contain the same material. The ordinary refractive index of the first layer A is lower than the ordinary refractive index of the second layer A at the emission peak wavelength of the light-emitting substance A. The ordinary refractive index of the first layer B is lower than the ordinary refractive index of the second layer B at the emission peak wavelength of the light-emitting substance B. The third layer B is positioned between the first electrode B and the first layer B, between the first layer B and the second layer B, or between the second layer B and the light-emitting layer B.

公开(公告)号：US20240324386A1

公开(公告)日：2024-09-26

申请号：US18577764

申请日：2022-07-04

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

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

IPC: H10K59/38 ,  H10K59/80 ,  H10K101/30

CPC classification number: H10K59/38 ,  H10K59/879 ,  H10K2101/30

Abstract: A light-emitting device with high emission efficiency is provided. The light-emitting device includes a first electrode, a second electrode, and an EL layer positioned between the first electrode and the second electrode. The EL layer includes at least a light-emitting layer, a first layer, a second layer, and a third layer. The first layer is positioned between the first electrode and the light-emitting layer. The third layer is positioned between the first layer and the light-emitting layer. The second layer is positioned between the first layer and the third layer. The first layer includes a first organic compound. The second layer includes a second organic compound. The third layer includes a third organic compound. The ordinary refractive index of the second organic compound is higher than the ordinary refractive index of the first organic and the ordinary refractive index of the third organic compound.

公开(公告)号：US20240292646A1

公开(公告)日：2024-08-29

申请号：US18647902

申请日：2024-04-26

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO ,  Tatsuyoshi TAKAHASHI ,  Takeyoshi WATABE ,  Satomi MITSUMORI

IPC: H10K50/12 ,  C07F15/00 ,  C09K11/06 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K59/12 ,  H10K59/38 ,  H10K59/40 ,  H10K85/30 ,  H10K85/60 ,  H10K101/00 ,  H10K101/10 ,  H10K101/30 ,  H10K101/40

CPC classification number: H10K50/121 ,  C07F15/0033 ,  C09K11/06 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K59/12 ,  H10K59/38 ,  H10K59/40 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1059 ,  C09K2211/185 ,  H10K85/342 ,  H10K85/615 ,  H10K85/633 ,  H10K85/636 ,  H10K85/654 ,  H10K85/657 ,  H10K85/6572 ,  H10K85/6576 ,  H10K2101/10 ,  H10K2101/30 ,  H10K2101/40 ,  H10K2101/80 ,  H10K2101/90

Abstract: 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 the LUMO level of the second organic compound. The HOMO level of the first organic compound is lower than the HOMO level of the second organic compound. The HOMO level of the guest material is higher than the HOMO level of the second organic compound. The energy difference between the LUMO level of the guest material and the HOMO level of the guest material is larger than the energy difference between the LUMO level of the first organic compound and the HOMO level 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.

公开(公告)号：US20240237526A1

公开(公告)日：2024-07-11

申请号：US18539974

申请日：2023-12-14

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Masatoshi TAKABATAKE ,  Sachiko KAWAKAMI ,  Nobuharu OHSAWA ,  Yui YOSHIYASU ,  Takeyoshi WATABE

IPC: H10K85/60 ,  C07D487/04 ,  C09K11/06

CPC classification number: H10K85/6572 ,  C07D487/04 ,  C09K11/06 ,  H10K85/624 ,  C09K2211/1018 ,  H10K50/171

Abstract: An electron-injection organic compound with low solubility in water is provided. An organic compound represented by General Formula (G1) is provided. X represents a group represented by General Formula (X-1) and Y represents a group represented by General Formula (Y-1). Ar represents a heteroaromatic hydrocarbon group having 2 to 30 carbon atoms forming a ring or an aromatic hydrocarbon group having 6 to 30 carbon atoms forming a ring. Each of R1 and R2 independently represents hydrogen or an alkyl group having 1 to 6 carbon atoms, and h represents an integer of 1 to 6. In General Formulae (X-1) and (Y-1), each of R3 to R6 independently represents hydrogen or an alkyl group having 1 to 6 carbon atoms, and m represents an integer of 0 to 4. When m is 0, 1, 3, or 4, n represents an integer of 1 to 5. When m is 2, n represents 1, 2, 4, or 5.

公开(公告)号：US20240224574A1

公开(公告)日：2024-07-04

申请号：US18396007

申请日：2023-12-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takeyoshi WATABE ,  Hiromi SEO ,  Nobuharu OHSAWA

IPC: H10K50/19

CPC classification number: H10K50/19 ,  H10K2101/30

Abstract: A highly reliable and efficient light-emitting device is provided. The light-emitting device includes an organic compound layer between a first electrode and a second electrode. The organic compound layer includes a first EL layer, a second EL layer, and an intermediate layer. The intermediate layer is between the first EL layer and the second EL layer. The intermediate layer includes a mixed layer containing a first organic compound and a second organic compound. The first organic compound has strong basicity with an acid dissociation constant pKa greater than or equal to 8. The second organic compound has an electron-transport property. The LUMO level of the first organic compound is higher than the LUMO level of the second organic compound. The HOMO level of the first organic compound is higher than the HOMO level of the second organic compound.

公开(公告)号：US20240023431A1

公开(公告)日：2024-01-18

申请号：US18013374

申请日：2021-06-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: H10K85/60 ,  C07D409/12 ,  C09K11/06 ,  C07D405/12 ,  C07C211/61

CPC classification number: H10K85/636 ,  H10K50/17 ,  C09K11/06 ,  C07D405/12 ,  C07C211/61 ,  H10K85/633 ,  C09K2211/1018 ,  H10K85/6572 ,  H10K85/6576 ,  H10K85/6574 ,  C07C2603/18 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1014 ,  H10K85/615 ,  C07D409/12

Abstract: Provided is a light-emitting device with high emission efficiency. Provided is a light-emitting device including an anode, a cathode, and an EL layer positioned therebetween; the EL layer includes a light-emitting layer, a first layer, and a second layer; the first layer is positioned between the anode and the light-emitting layer; the first layer is in contact with the second layer; the second layer contains a monoamine compound having an arylamine structure; a first group, a second group, and a third group are bonded to a nitrogen atom included in the amine in the monoamine compound; the first group is a group including a carbazole structure; the second group is a group including a dibenzofuran structure or a dibenzothiophene structure; the third group includes an aromatic hydrocarbon structure having 6 to 18 carbon atoms or a heteroaromatic hydrocarbon structure having 4 to 26 carbon atoms; and a refractive index of the first layer is lower than a refractive index of the light-emitting layer.

公开(公告)号：US20230422548A1

公开(公告)日：2023-12-28

申请号：US18210953

申请日：2023-06-16

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takeyoshi WATABE ,  Takuya ISHIMOTO ,  Nobuharu OHSAWA ,  Satoshi SEO

IPC: H10K50/856 ,  H10K50/858

CPC classification number: H10K50/856 ,  H10K50/858 ,  H10K2102/351

Abstract: A novel light-emitting device that is highly convenient, useful, or reliable is provided. The light-emitting device includes a first reflective film, first to fourth layers, and a first electrode. The first electrode overlaps with the first reflective film. The fourth layer is positioned between the first electrode and the first reflective film, and contains a first light-emitting material, which has an emission spectrum having a peak at a first wavelength. The third layer is positioned between the fourth layer and the first reflective film, and contains an organic compound having an ordinary refractive index of 1.45 to 1.75. The second layer is positioned between the third layer and the first reflective film, has a property of transmitting light with the first wavelength, includes a second electrode, and contains an element with an atomic number of 21 to 83 at 5 atomic % or higher. The first layer is positioned between the second layer and the first reflective film, has a property of transmitting light with the first wavelength, and contains an element with an atomic number of 1 to 20 at 95 atomic % or higher. The first reflective film reflects light with the first wavelength.

公开(公告)号：US20230200198A1

公开(公告)日：2023-06-22

申请号：US18079994

申请日：2022-12-13

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Sachiko KAWAKAMI ,  Nobuharu OHSAWA ,  Yuji IWAKI ,  Ryota HODO ,  Kentaro SUGAYA ,  Shinya SASAGAWA ,  Takahiro FUJIE ,  Yoshikazu HIURA ,  Toshiki SASAKI ,  Takeyoshi WATABE ,  Kunihiko SUZUKI

IPC: H10K71/00 ,  H10K85/60

CPC classification number: H01L51/56 ,  H01L51/0072 ,  H01L51/5092

Abstract: To provide a light-emitting element in which an organic compound layer can be processed at once by a photolithography technique. A first electrode and an organic compound layer including an electron-injection layer are formed over an insulating surface. The electron-injection layer is the outermost layer of the organic compound layer and contains an organic compound having a basic skeleton and an acid dissociation constant pKa of greater than or equal to 1. A sacrificial layer and a mask are formed over the electron-injection layer and the sacrificial layer is processed into an island shape using the mask. With use of the island-shaped sacrificial layer as a mask, the organic compound layer is processed into an island shape to cover the first electrode. Part of the island-shaped sacrificial layer is removed with an acidic chemical solution to expose the electron-injection layer. A second electrode is formed to cover the electron-injection layer.

公开(公告)号：US20230171985A1

公开(公告)日：2023-06-01

申请号：US17990794

申请日：2022-11-21

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiromi SEO ,  Takeyoshi WATABE ,  Nobuharu OHSAWA ,  Satoshi SEO

IPC: H01L29/08

CPC classification number: H01L51/5064 ,  H01L51/508 ,  H01L27/3248 ,  H01L27/3227

Abstract: An organic semiconductor element with low driving voltage is provided. The organic semiconductor element includes a first electrode, a second electrode, and a hole-transport layer and an active layer between the first electrode and the second electrode. The hole-transport layer includes a first hole-transport layer and a second hole-transport layer. The first hole-transport layer is closer to the substrate than the second hole-transport layer is. The first hole-transport layer and the second hole-transport layer are in contact with each other. A value obtained by subtracting GSP_slope (mV/nm) of the second hole-transport layer from GSP_slope (mV/nm) of the first hole-transport layer is less than or equal to 10 (mV/nm). Note that GSP_slope (mV/nm) is a parameter represented by V/d when surface potential and thickness of a film are V (mV) and d (nm), respectively.

公开(公告)号：US20220348534A1

公开(公告)日：2022-11-03

申请号：US17706887

申请日：2022-03-29

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Tomohiro KUBOTA ,  Takao TOSU ,  Takeyoshi WATABE ,  Airi UEDA ,  Yuta KAWANO ,  Nobuharu OHSAWA ,  Satoshi SEO

IPC: C07C211/61 ,  H01L51/00

Abstract: An organic compound having a hole-transport property and a low refractive index is provided. An organic compound represented by General Formula (G1) is provided. In the formula, Ar12 represents an aryl group having 6 to 10 carbon atoms in a ring and includes at least one branched-chain or cyclic alkyl group having 3 to 12 carbon atoms. The total number of carbon atoms of the branched-chain or cyclic alkyl group having 3 to 12 carbon atoms in Ar12 is 6 to 36. Ar11 and Ar21 each represent a substituted or unsubstituted arylene group having 6 to 13 carbon atoms in a ring. Ar22 represents a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring. In addition, n and m each independently represent an integer of 0 or 1. Ar1 represents a phenyl group including at least one alkyl group having 1 to 6 carbon atoms. Ar2 represents a phenyl group including at least one alkyl group having 1 to 6 carbon atoms, or an alkyl group having 1 to 4 carbon atoms.