公开(公告)号：US11800734B2

公开(公告)日：2023-10-24

申请号：US17969363

申请日：2022-10-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Takeyoshi Watabe ,  Tomohiro Kubota ,  Airi Ueda ,  Satoshi Seo ,  Nobuharu Ohsawa ,  Yuko Kubota

IPC: H01L51/50 ,  H10K50/115 ,  H10K50/16 ,  H10K50/17 ,  H10K85/60

CPC classification number: H10K50/115 ,  H10K50/16 ,  H10K50/17 ,  H10K85/626

Abstract: A light-emitting apparatus with low power consumption is provided. A light-emitting apparatus including a first light-emitting device and a first color conversion layer. The first light-emitting device includes an anode, a cathode, and an EL layer positioned between the anode and the cathode. The EL layer includes a layer including a material with a refractive index lower than or equal to 1.75 at 467 nm. The first color conversion layer includes a first substance capable of emission by absorbing light. Light emitted from the first light-emitting device enters the first color conversion layer.

公开(公告)号：US11778846B2

公开(公告)日：2023-10-03

申请号：US17521167

申请日：2021-11-08

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Shunpei Yamazaki ,  Takahiro Ishisone

IPC: H01L51/50 ,  H10K50/13 ,  H10K50/11 ,  H10K50/85 ,  H10K85/30 ,  H10K85/60 ,  H10K101/10 ,  H10K101/40 ,  H10K101/00 ,  H10K102/10

CPC classification number: H10K50/13 ,  H10K50/11 ,  H10K50/85 ,  H10K85/342 ,  H10K85/611 ,  H10K85/626 ,  H10K85/633 ,  H10K85/636 ,  H10K85/6572 ,  H10K85/6576 ,  H10K2101/10 ,  H10K2101/40 ,  H10K2101/90 ,  H10K2102/103

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 the longest-wavelength-side local maximum peak 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：US20230255082A1

公开(公告)日：2023-08-10

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

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：US11665960B2

公开(公告)日：2023-05-30

申请号：US16483304

申请日：2018-01-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiroshi Kadoma ,  Hiroki Suzuki ,  Yusuke Takita ,  Tsunenori Suzuki ,  Satoshi Seo

IPC: H01L51/00 ,  C07D209/86 ,  C09K11/06 ,  H01L27/32 ,  H01L51/50

CPC classification number: H01L51/0072 ,  C07D209/86 ,  C09K11/06 ,  H01L51/0052 ,  C09K2211/1018 ,  H01L27/3248 ,  H01L51/5012 ,  H01L51/5016 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5092

Abstract: A novel organic compound is provided. That is, a novel organic compound that is effective in improving element characteristics and reliability is provided.
The organic compound includes an anthracene skeleton and a carbazole skeleton, and is represented by the following general formula (G1).




(In the formula, Ar represents a substituted or unsubstituted arylene group having 6 to 13 carbon atoms, and when the arylene group has substituents, the substituents may be bonded to each other to form a ring. Furthermore, Cz represents a substituted or unsubstituted carbazole skeleton. Furthermore, each of R1 to R9 and R11 to R17 independently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms. Furthermore, at least one of the following pairs may form a fused ring: R12 and R13; R14 and R15; R15 and R16; or R16 and R17.

公开(公告)号：US11637263B2

公开(公告)日：2023-04-25

申请号：US16758999

申请日：2018-10-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Nobuharu Ohsawa ,  Satoshi Seo

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

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：US11631702B2

公开(公告)日：2023-04-18

申请号：US17166020

申请日：2021-02-03

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Kaoru Hatano

IPC: H01L27/12 ,  H01L27/32 ,  H01L33/58 ,  H01L33/50 ,  H01L29/786 ,  H01L51/50 ,  H01L51/52

Abstract: A lightweight flexible light-emitting device which is able to possess a curved display portion and display a full color image with high resolution and the manufacturing process thereof are disclosed. The light-emitting device comprises: a plastic substrate; an insulating layer with an adhesive interposed therebetween; a thin film transistor over the insulating layer; a protective insulating film over the thin film transistor; a color filter over the protective insulating film; an interlayer insulating film over the color filter; and a white-emissive light-emitting element formed over the interlayer insulating film and being electrically connected to the thin film transistor.

公开(公告)号：US11588125B2

公开(公告)日：2023-02-21

申请号：US17398530

申请日：2021-08-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Nobuharu Ohsawa ,  Satoshi Seo

IPC: H01L51/50 ,  H01L27/32 ,  H01L51/00

Abstract: A reliable light-emitting element with low driving voltage is provided. The light-emitting element includes an electron-injection layer between a cathode and a light-emitting layer. The electron-injection layer is a mixed film of a transition metal and an organic compound having an unshared electron pair. An atom of the transition metal and the organic compound form SOMO.

公开(公告)号：US11569466B2

公开(公告)日：2023-01-31

申请号：US16541451

申请日：2019-08-15

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Tsunenori Suzuki ,  Yusuke Takita ,  Naoaki Hashimoto

IPC: H01L51/00 ,  H01L51/50 ,  C07D209/82 ,  H01L51/56

Abstract: A novel light-emitting element is provided. A light-emitting element with a long lifetime is provided. A light-emitting element with high emission efficiency is provided. In the light-emitting element, an EL layer includes a hole-injection layer, a first hole-transport layer, a second hole-transport layer, a third hole-transport layer, a light-emitting layer, a first electron-transport layer, and a second electron-transport layer in this order; the hole-injection layer includes an organic acceptor; the LUMO level of the host material is higher than that of the first electron-transport layer; the LUMO level of the second electron-transport layer is higher than that of the first electron-transport layer; the host material is a substance including a condensed aromatic ring skeleton; and the first and second electron-transport layers each include a substance having a heteroaromatic ring skeleton.

公开(公告)号：US11555030B2

公开(公告)日：2023-01-17

申请号：US16609284

申请日：2018-04-20

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takuya Haruyama ,  Sachiko Kawakami ,  Naoaki Hashimoto ,  Yusuke Takita ,  Tsunenori Suzuki ,  Satoshi Seo

IPC: C07D307/77 ,  C07D407/12 ,  H01L51/00 ,  H01L51/50 ,  H01L51/52

Abstract: An organic compound has a benzonaphthofuran skeleton and is represented by General Formula (G1). In General Formula (G1), A represents a pyrene skeleton. In the case where the pyrene skeleton has a substituent, the substituent is a diarylamino group including two substituted or unsubstituted aryl groups each having 6 to 13 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, an alkyl group having 1 to 7 carbon atoms, a substituted or unsubstituted monocyclic saturated hydrocarbon group having 3 to 20 carbon atoms, or a substituted or unsubstituted polycyclic saturated hydrocarbon group having 7 to 10 carbon atoms. The two aryl groups of the diarylamino group may be the same or different. In X1 represented by General Formula (G1-1), one of R6 and R7 is bonded to N in General Formula (G1), and the other of R6 and R7 represents an alkyl group having 1 to 7 carbon atoms, a substituted or unsubstituted monocyclic saturated hydrocarbon group having 3 to 20 carbon atoms, or a substituted or unsubstituted polycyclic saturated hydrocarbon group having 7 to 10 carbon atoms.

公开(公告)号：US11495763B2

公开(公告)日：2022-11-08

申请号：US16879819

申请日：2020-05-21

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo

IPC: H01L51/50 ,  H01L51/00 ,  C09K11/02 ,  C09K11/06 ,  H01L31/0232

Abstract: Provided is a light-emitting element with high external quantum efficiency and a low drive voltage. The light-emitting element includes a light-emitting layer which contains a phosphorescent compound and a material exhibiting thermally activated delayed fluorescence between a pair of electrodes, wherein a peak of a fluorescence spectrum and/or a peak of a phosphorescence spectrum of the material exhibiting thermally activated delayed fluorescence overlap(s) with a lowest-energy-side absorption band in an absorption spectrum of the phosphorescent compound, and wherein the phosphorescent compound exhibits phosphorescence in the light-emitting layer by voltage application between the pair of electrodes.