公开(公告)号：US20210395271A1

公开(公告)日：2021-12-23

申请号：US17287407

申请日：2019-11-20

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Satoshi SEO ,  Nobuharu OHSAWA ,  Toshiki SASAKI ,  Hiromitsu KIDO

IPC: C07D519/00 ,  H01L51/00

Abstract: An object is to provide a novel composition for an EL device. Another object of one embodiment of the present invention is to provide a composition for an EL device capable of easily manufacturing an EL device with stable characteristics. Another object of one embodiment of the present invention is to provide a composition for an EL device capable of manufacturing an EL device with stable characteristics at low cost. The present inventors have studied a composition for an EL device in which different substances are mixed in advance and which does not cause change in characteristics of the EL device even when evaporation is repeated with use of the composition. As a result, a composition for an EL device in which a difference in the 5% weight loss temperature under a pressure lower than or equal to 0.1 Pa between contained substances is less than or equal to 50° C. is provided.

公开(公告)号：US20210363151A1

公开(公告)日：2021-11-25

申请号：US17058435

申请日：2019-05-21

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO ,  Satomi WATABE ,  Hideko YOSHIZUMI ,  Hiromitsu KIDO ,  Toshiki SASAKI ,  Akira NAGASAKA ,  Yuta KAWANO

IPC: C07D491/048 ,  C07D513/04 ,  C07D519/00 ,  H01L51/00

Abstract: A benzofuropyrimidine derivative or benzothienopyrimidine derivative that is a novel organic compound is provided. An organic compound represented by General Formula (G1) below. Q represents oxygen or sulfur. Ar1, Ar2, Ar3, and Ar4 each independently represent an aromatic hydrocarbon ring, and the number of carbon atoms included in the aromatic hydrocarbon ring is 6 to 25. m and n are each 0 or 1. A is a group having 12 to 100 carbon atoms in total and includes one or more of a benzene ring, a naphthalene ring, a fluorene ring, a phenanthrene ring, a triphenylene ring, a heteroaromatic ring including a dibenzothiophene ring, a heteroaromatic ring including a dibenzofuran ring, a heteroaromatic ring including a carbazole ring, a benzimidazole ring, and a triphenylamine structure.

公开(公告)号：US20210351224A1

公开(公告)日：2021-11-11

申请号：US17273032

申请日：2019-08-26

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Satoshi SEO ,  Koji KUSUNOKI ,  Takayuki IKEDA

IPC: H01L27/146

Abstract: A thin imaging device including a light source is provided. The imaging device includes a light-emitting device which emits infrared light. Infrared light emitted by the light-emitting device and reflected by a subject is received by a photoelectric conversion device included in a pixel circuit. Since an EL element is used as the light-emitting device, a thin imaging device with a light source can be formed. A pixel circuit utilizing an oxide semiconductor transistor having a property of low off-state current is used, whereby image capturing by a global shutter method is possible and a distortion-free image can be obtained even when the subject is moving.

公开(公告)号：US20210305530A1

公开(公告)日：2021-09-30

申请号：US17337569

申请日：2021-06-03

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Satoko SHITAGAKI ,  Satoshi SEO ,  Nobuharu OHSAWA ,  Hideko INOUE ,  Masahiro TAKAHASHI ,  Kunihiko SUZUKI

IPC: H01L51/50 ,  H01L51/00 ,  H05B33/14 ,  C09K11/02 ,  C09K11/06 ,  H01L51/52

Abstract: Provided is a light-emitting element with high external quantum efficiency, or a light-emitting element with a long lifetime. The light-emitting element includes, between a pair of electrodes, a light-emitting layer including a guest material and a host material, in which an emission spectrum of the host material overlaps with an absorption spectrum of the guest material, and phosphorescence is emitted by conversion of an excitation energy of the host material into an excitation energy of the guest material. By using the overlap between the emission spectrum of the host material and the absorption spectrum of the guest material, the energy smoothly transfers from the host material to the guest material, so that the energy transfer efficiency of the light-emitting element is high. Accordingly, a light-emitting element with high external quantum efficiency can be achieved.

公开(公告)号：US20210225942A1

公开(公告)日：2021-07-22

申请号：US15734336

申请日：2019-05-29

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tsunenori SUZUKI ,  Yasuhiro NIIKURA ,  Tomoya HIROSE ,  Satoshi SEO

IPC: H01L27/32 ,  G06F3/041 ,  G09G3/3208

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：US20210159435A1

公开(公告)日：2021-05-27

申请号：US15734635

申请日：2019-05-23

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei YAMAZAKI ,  Satoshi SEO ,  Koji KUSUNOKI ,  Kei TAKAHASHI

IPC: H01L51/50 ,  H01L27/32 ,  G09G3/3225

Abstract: A display device having a high display quality is provided. A display device that can perform desired display without image data conversion is provided. The display device includes a first pixel. The first pixel includes a first light-emitting element, a color conversion layer, and a first memory circuit. The first light-emitting element exhibits blue light. The color conversion layer has a function of converting light emitted by the first light-emitting element into light having a longer wavelength. A first image signal and a first correction signal are supplied to the first pixel. The first memory circuit has a function of retaining the first correction signal and a function of adding the first correction signal to the first image signal. The first pixel has a function of displaying an image using the first image signal and the first correction signal.

公开(公告)号：US20210159410A1

公开(公告)日：2021-05-27

申请号：US17166217

申请日：2021-02-03

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Sachiko Kawakami ,  Anna TADA ,  Yusuke TAKITA ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO ,  Satoshi SEO

IPC: H01L51/00 ,  C07C211/54 ,  C07C211/58

Abstract: An object of one embodiment of the present invention is to provide a novel organic compound. The organic compound is a triarylamine derivative. The triarylamine derivative has an aryl group including a skeleton in which a naphthyl group is bonded to a naphthylene group. The other two aryl groups are each independently a phenyl group, a biphenyl group, or a terphenyl group. These groups may each have a substituent. As the substituent, an alkyl group having 1 to 6 carbon atoms or a cycloalkyl group having 3 to 6 carbon atoms can be selected.

公开(公告)号：US20210151695A1

公开(公告)日：2021-05-20

申请号：US17101101

申请日：2020-11-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO ,  Hideko INOUE ,  Miki KURIHARA ,  Yui YAMADA ,  Tatsuyoshi TAKAHASHI ,  Hiromitsu KIDO

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

Abstract: A novel organometallic complex with high reliability is provided. A light-emitting element includes an EL layer between a pair of electrodes. The EL layer includes at least a light-emitting layer. The light-emitting layer contains an organometallic complex. The organometallic complex includes a first ligand and a second ligand which are coordinated to a central metal. The HOMO is distributed over the first ligand, and the LUMO is distributed over the second ligand. The first ligand and the second ligand are cyclometalated ligands.

公开(公告)号：US20210151689A1

公开(公告)日：2021-05-20

申请号：US16622489

申请日：2018-06-13

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tomoka Hara ,  Hideko YOSHIZUMI ,  Hiromitsu KIDO ,  Satoshi SEO

IPC: H01L51/00 ,  C07D491/048

Abstract: A novel compound is provided. A light-emitting element with high emission efficiency and a long lifetime is provided. The compound is an organic compound that includes a benzofuro[3,2-d]pyrimidine or benzothieno[3,2-d]pyrimidine skeleton (General Formula (G0)). The 2-position of the benzofuro[3,2-d]pyrimidine or benzothieno[3,2-d]pyrimidine skeleton has a substituent and the 6- to 9-positions of the skeleton have at least one substituent. Any one of the substituents bonded to the 6- to 9-positions is bonded to the benzofuro[3,2-d]pyrimidine or benzothieno[3,2-d]pyrimidine skeleton via a phenylene group. A light-emitting element including the compound is provided.

公开(公告)号：US20210126213A1

公开(公告)日：2021-04-29

申请号：US16981793

申请日：2019-03-13

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO ,  Tsunenori SUZUKI ,  Yusuke TAKITA ,  Takumu OKUYAMA ,  Anna TADA

IPC: H01L51/50

Abstract: A novel light-emitting device is provided. Alternatively, a light-emitting device with favorable emission efficiency is provided. Alternatively, a light-emitting device with a favorable lifetime is provided. Alternatively, a light-emitting device with a low driving voltage is provided. Provided is a light-emitting device including an anode, a cathode, and a layer including an organic compound that is positioned between the anode and the cathode, in which the layer including the organic compound includes a first layer, a second layer, and a light-emitting layer in this order from the anode side, the first layer includes a first substance and a second substance, the second layer includes a third substance, the first substance is an organic compound a HOMO level of which is higher than or equal to −5.8 eV and lower than or equal to −5.4 eV, the second substance is a substance that has an electron-acceptor property with respect to the first substance, and the third substance is an organic compound having a structure in which at least two substituents comprising carbazole rings are bonded to a naphthalene ring.