公开(公告)号：US11980087B2

公开(公告)日：2024-05-07

申请号：US18200370

申请日：2023-05-22

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Harue Osaka ,  Takahiro Ushikubo ,  Nobuharu Ohsawa ,  Satoshi Seo ,  Tsunenori Suzuki

IPC: H01L51/50 ,  C07C211/54 ,  C09K11/02 ,  C09K11/06 ,  H05B33/14 ,  H10K85/30 ,  H10K85/60 ,  H10K50/11 ,  H10K50/14 ,  H10K50/15 ,  H10K50/16 ,  H10K50/19 ,  H10K59/32 ,  H10K101/10

CPC classification number: H10K85/633 ,  C07C211/54 ,  C09K11/025 ,  C09K11/06 ,  H05B33/14 ,  H10K85/342 ,  H10K85/626 ,  H10K85/631 ,  H10K85/636 ,  C07C2601/14 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1014 ,  C09K2211/1029 ,  C09K2211/185 ,  H10K50/11 ,  H10K50/14 ,  H10K50/15 ,  H10K50/16 ,  H10K50/19 ,  H10K59/32 ,  H10K85/615 ,  H10K85/6572 ,  H10K2101/10 ,  Y10S428/917

Abstract: A triarylamine derivative represented by a general formula (G1) given below is provided. Note that in the formula, Ar represents either a substituted or unsubstituted phenyl group or a substituted or unsubstituted biphenyl group; α represents a substituted or unsubstituted naphthyl group; β represents either hydrogen or a substituted or unsubstituted naphthyl group; n and m each independently represent 1 or 2; and R1 to R8 each independently represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, or a phenyl group.

公开(公告)号：US11964928B2

公开(公告)日：2024-04-23

申请号：US17054859

申请日：2019-05-09

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tomohiro Kubota ,  Takeyoshi Watabe ,  Satoshi Seo ,  Nobuharu Ohsawa

IPC: C07C211/54 ,  H10K85/60 ,  H10K50/17

CPC classification number: C07C211/54 ,  H10K85/631 ,  H10K50/17

Abstract: A novel organic compound is provided. A novel organic compound having a carrier-transport property is provided. A novel organic compound having a hole-transport property is provided. An organic compound having a low refractive index is provided. An organic compound having a low refractive index and a carrier-transport property is provided. An organic compound having a low refractive index and a hole-transport property is provided. An organic compound represented by the following general formula (G1) is provided.

公开(公告)号：US11956981B2

公开(公告)日：2024-04-09

申请号：US18138250

申请日：2023-04-24

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Nobuharu Ohsawa ,  Satoshi Seo

IPC: H10K50/12 ,  C09K11/02 ,  C09K11/06 ,  H10K50/16 ,  H10K59/12 ,  H10K59/40 ,  H10K50/13 ,  H10K50/19 ,  H10K85/30 ,  H10K85/60 ,  H10K101/00 ,  H10K101/30

CPC classification number: H10K50/121 ,  C09K11/02 ,  C09K11/06 ,  H10K50/16 ,  C09K2211/1007 ,  C09K2211/1044 ,  C09K2211/185 ,  H10K50/131 ,  H10K50/19 ,  H10K59/12 ,  H10K59/40 ,  H10K85/342 ,  H10K85/60 ,  H10K85/615 ,  H10K85/622 ,  H10K85/626 ,  H10K85/636 ,  H10K85/654 ,  H10K85/657 ,  H10K85/6572 ,  H10K85/6576 ,  H10K2101/27 ,  H10K2101/30

Abstract: A light-emitting element having high emission 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 has a function of converting triplet excitation energy into light emission. The second organic compound is preferably a TADF material. The third organic compound is a fluorescent compound. Light emitted from the light-emitting element is obtained from the third organic compound. Triplet excitation energy in a light-emitting layer is transferred to the third organic compound by reverse intersystem crossing caused by the second organic compound or through the first organic compound.

公开(公告)号：US11925097B2

公开(公告)日：2024-03-05

申请号：US18134638

申请日：2023-04-14

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Taisuke Kamada ,  Ryo Hatsumi ,  Daisuke Kubota ,  Naoaki Hashimoto ,  Tsunenori Suzuki ,  Harue Osaka ,  Satoshi Seo

IPC: H10K65/00 ,  H10K39/32 ,  H10K50/16 ,  H10K50/17 ,  H10K50/86 ,  H10K59/12 ,  H10K59/40 ,  H10K101/30

CPC classification number: H10K65/00 ,  H10K39/32 ,  H10K50/16 ,  H10K50/17 ,  H10K50/865 ,  H10K59/12 ,  H10K59/40 ,  H10K2101/30

Abstract: An object is to provide a highly reliable display unit having a function of sensing light. The display unit includes a light-receiving device and a light-emitting device. The light-receiving device includes an active layer between a pair of electrodes. The light-emitting device includes a hole-injection layer, a light-emitting layer, and an electron-transport layer between a pair of electrodes. The light-receiving device and the light-emitting device share one of the electrodes, and may further share another common layer between the pair of electrodes. The hole-injection layer is in contact with an anode and contains a first compound and a second compound. The electron-transport property of the electron-transport layer is low; hence, the light-emitting layer is less likely to have excess electrons. Here, the first compound is the material having a property of accepting electrons from the second compound.

公开(公告)号：US11903290B2

公开(公告)日：2024-02-13

申请号：US18104674

申请日：2023-02-01

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tsunenori Suzuki ,  Yasuhiro Niikura ,  Tomoya Hirose ,  Satoshi Seo

IPC: G06F3/041 ,  H10K59/38 ,  G09G3/3208 ,  H10K59/12

CPC classification number: H10K59/38 ,  G06F3/041 ,  G09G3/3208 ,  G09G2354/00 ,  H10K59/12

Abstract: A novel display panel that is highly convenient or reliable is provided. The display panel includes a first pixel; the first pixel includes a first display element, a first color conversion layer, and a first absorption layer; the first display element emits first light; the first absorption layer overlaps with the first display element; and the first absorption layer absorbs the first light. Furthermore, the first color conversion layer is sandwiched between the first display element and the first absorption layer; the first color conversion layer converts the first light into second light; and the second light has a spectrum including a high proportion of light with a long wavelength compared with the first light.

公开(公告)号：US11889711B2

公开(公告)日：2024-01-30

申请号：US17153985

申请日：2021-01-21

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiromi Nowatari ,  Satoshi Seo ,  Nobuharu Ohsawa ,  Takahiro Ushikubo ,  Tetsuo Tsutsui

IPC: B32B15/01 ,  H10K50/13 ,  B82Y10/00 ,  H10K50/11 ,  H10K50/19 ,  H10K85/20 ,  H10K85/30 ,  H10K85/60 ,  H10K101/40

CPC classification number: H10K50/13 ,  B82Y10/00 ,  H10K50/11 ,  H10K50/131 ,  H10K50/19 ,  H10K85/221 ,  H10K85/324 ,  H10K85/615 ,  H10K85/621 ,  H10K85/626 ,  H10K85/633 ,  H10K85/636 ,  H10K85/6572 ,  H10K2101/40

Abstract: An object is to provide a light-emitting element capable of emitting light with a high luminance even at a low voltage, and having a long lifetime. The light-emitting element includes n EL layers between an anode and a cathode (n is a natural number of two or more), and also includes, between m-th EL layer from the anode and (m+1)-th EL layer (m is a natural number, 1≤m≤n−1), a first layer including a first donor material in contact with the m-th EL layer, a second layer including an electron-transport material and a second donor material in contact with the first layer, and a third layer including a hole-transport material and an acceptor material in contact with the second layer and the (m+1)-th EL layer.

公开(公告)号：US20240023423A1

公开(公告)日：2024-01-18

申请号：US18216285

申请日：2023-06-29

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tsunenori Suzuki ,  Naoaki Hashimoto ,  Eriko Sauo ,  Satoshi Seo

IPC: H10K85/30 ,  H10K50/11 ,  H10K50/13 ,  H10K50/16

CPC classification number: H10K85/342 ,  H10K50/11 ,  H10K50/13 ,  H10K50/16 ,  H10K85/622

Abstract: A light-emitting element which includes a plurality of light-emitting layers between a pair of electrodes and has low driving voltage and high emission efficiency is provided. A light-emitting element including first to third light-emitting layers between a cathode and an anode is provided. The first light-emitting layer includes a first phosphorescent material and a first electron-transport material; the second light-emitting layer includes a second phosphorescent material and a second electron-transport material; the third light-emitting layer includes a fluorescent material and a third electron-transport material; the first to third light-emitting elements are provided in contact with an electron-transport layer positioned on a cathode side; and a triplet excitation energy level of a material included in the electron-transport layer is lower than triplet excitation energy levels of the first electron-transport material and the second electron-transport material.

公开(公告)号：US11871592B2

公开(公告)日：2024-01-09

申请号：US17221969

申请日：2021-04-05

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Satoshi Seo ,  Satoko Shitagaki ,  Nobuharu Ohsawa ,  Hideko Inoue ,  Kunihiko Suzuki

IPC: H01L51/50 ,  H10K50/12 ,  C07D409/10 ,  C09K11/06 ,  H05B33/14 ,  H10K50/11 ,  H10K85/60 ,  H10K85/30 ,  H10K101/10

CPC classification number: H10K50/121 ,  C07D409/10 ,  C09K11/06 ,  H05B33/14 ,  H10K50/11 ,  H10K85/6572 ,  H10K85/6576 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1029 ,  C09K2211/1044 ,  C09K2211/1088 ,  C09K2211/1092 ,  C09K2211/185 ,  H10K85/342 ,  H10K85/624 ,  H10K85/626 ,  H10K85/631 ,  H10K85/633 ,  H10K85/636 ,  H10K2101/10

Abstract: Provided is a light-emitting element which includes a light-emitting layer containing a phosphorescent compound, a first organic compound, and a second organic compound between a pair of electrodes. A combination of the first organic compound and the second organic compound forms an exciplex (excited complex). An emission spectrum of the exciplex overlaps with an absorption band located on the longest wavelength side of an absorption spectrum of the phosphorescent compound. A peak wavelength of the emission spectrum of the exciplex is longer than or equal to a peak wavelength of the absorption band located on the longest wavelength side of the absorption spectrum of the phosphorescent compound.

公开(公告)号：US11864403B2

公开(公告)日：2024-01-02

申请号：US17408588

申请日：2021-08-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takahiro Ishisone ,  Satoshi Seo ,  Yusuke Nonaka ,  Nobuharu Ohsawa

IPC: H10K50/13 ,  H10K50/11 ,  H10K85/30 ,  H10K85/60 ,  H10K101/40 ,  H10K101/10 ,  H10K101/00

CPC classification number: H10K50/131 ,  H10K50/11 ,  H10K50/13 ,  H10K85/342 ,  H10K85/633 ,  H10K2101/10 ,  H10K2101/27 ,  H10K2101/40

Abstract: Provided is a light-emitting element which includes a first electrode, a second electrode over the first electrode, and first and second light-emitting layers therebetween. The first light-emitting layer contains a first host material and a first light-emitting material, and the second light-emitting layer contains a second host material and a second light-emitting material. The first light-emitting material is a fluorescent material, and the second light-emitting material is a phosphorescent material. The level of the lowest triplet excited state (T1 level) of the first light-emitting material is higher than the T1 level of the first host material. A light-emitting device, an electronic device, and a lighting device including the light-emitting element are further provided.

公开(公告)号：US11825718B2

公开(公告)日：2023-11-21

申请号：US17356659

申请日：2021-06-24

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takahiro Ishisone ,  Satoshi Seo ,  Yusuke Nonaka ,  Nobuharu Ohsawa

IPC: H10K50/12 ,  H10K50/85 ,  H10K59/12 ,  H10K59/35 ,  H10K50/11 ,  H10K50/13 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K50/18 ,  H10K50/81 ,  H10K50/828 ,  H10K50/86 ,  H10K101/10 ,  H10K50/84 ,  H10K85/30 ,  H10K85/60 ,  H10K101/30

CPC classification number: H10K59/35 ,  H10K50/11 ,  H10K50/12 ,  H10K50/13 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K50/171 ,  H10K50/18 ,  H10K50/81 ,  H10K50/828 ,  H10K50/85 ,  H10K50/865 ,  H10K59/12 ,  H10K50/841 ,  H10K85/342 ,  H10K85/615 ,  H10K85/622 ,  H10K85/626 ,  H10K85/633 ,  H10K85/636 ,  H10K85/6572 ,  H10K85/6576 ,  H10K2101/10 ,  H10K2101/30

Abstract: A multicolor light-emitting element that utilizes fluorescence and phosphorescence and is advantageous for practical application is provided. The light-emitting element has a stacked-layer structure of a first light-emitting layer containing a host material and a fluorescent substance and a second light-emitting layer containing two kinds of organic compounds and a substance that can convert triplet excitation energy into luminescence. Note that light emitted from the first light-emitting layer has an emission peak on the shorter wavelength side than light emitted from the second light-emitting layer.