公开(公告)号：US20200098997A1

公开(公告)日：2020-03-26

申请号：US16473053

申请日：2017-12-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takeyoshi WATABE ,  Satoshi SEO ,  Nozomi KOMATSU ,  Ryohei YAMAOKA ,  Harue OSAKA ,  Kunihiko SUZUKI ,  Shunsuke HOSOUMI

IPC: H01L51/00

Abstract: A highly reliable light-emitting element having high emission efficiency is provided. The light-emitting element includes a light-emitting layer including a first organic compound and a guest material. The first organic compound has a substituted or unsubstituted carbazole skeleton. In the light-emitting layer, the weight ratio of a hydrocarbon group substitution product in which at least one of hydrogen atoms in the first organic compound is substituted by a hydrocarbon group having 1 to 6 carbon atoms to the first organic compound is greater than 0 and less than or equal to 0.1.

公开(公告)号：US20170244059A1

公开(公告)日：2017-08-24

申请号：US15436263

申请日：2017-02-17

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Toshiki SASAKI ,  Riho KATAISHI ,  Ryohei YAMAOKA

IPC: H01L51/50 ,  H01L27/32 ,  H01L51/52

CPC classification number: H01L51/5008 ,  H01L27/1225 ,  H01L27/323 ,  H01L27/3262 ,  H01L29/24 ,  H01L29/7869 ,  H01L51/0052 ,  H01L51/0054 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0081 ,  H01L51/0085 ,  H01L51/0091 ,  H01L51/5012 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5092 ,  H01L51/5206 ,  H01L51/5221 ,  H01L51/5278 ,  H01L2251/301 ,  H01L2251/303 ,  H01L2251/5353

Abstract: A light-emitting element includes a cathode, an anode, a light-emitting layer, a first layer, a second layer, and a third layer. The first layer is provided between the cathode and the light-emitting layer. The second layer is provided between the light-emitting layer and the third layer and includes a region in contact with the third layer. The third layer is provided between the second layer and the anode and includes a region in contact with the anode. The first layer and the third layer each include an alkali metal or an alkaline earth metal. The second layer includes a material that has a function of transporting an electron.

公开(公告)号：US20220173347A1

公开(公告)日：2022-06-02

申请号：US17598549

申请日：2020-04-01

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Ryohei YAMAOKA ,  Naoaki HASHIMOTO ,  Tsunenori SUZUKI ,  Satoshi SEO

IPC: H01L51/50 ,  H01L51/00

Abstract: A light-emitting device with a long lifetime is provided. A light-emitting device with high reliability is provided. The light-emitting device includes a first electrode, a first light-emitting layer, a first layer, a second layer, a third layer, a second light-emitting layer, and a second electrode stacked in this order. The first layer contains a first organic compound and a first substance. The second layer contains a second organic compound. The third layer contains a second substance. The first organic compound is an electron-transport material. The first substance is a metallic salt, a metal oxide, or an organometallic salt. The second organic compound is an electron-transport material. The second substance is an electron-injection material. The second layer has a lower concentration of the first substance than the first layer.

公开(公告)号：US20210384442A1

公开(公告)日：2021-12-09

申请号：US16645104

申请日：2018-09-05

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takeyoshi Watabe ,  Ryohei YAMAOKA ,  Satoshi SEO ,  Nobuharu OHSAWA

IPC: H01L51/00

Abstract: A light-emitting device with high outcoupling efficiency is provided.
In the light-emitting device including a light-emitting layer between a pair of electrodes, a low refractive index layer containing an organic compound and an inorganic compound is provided between the light-emitting layer and an anode or between the light-emitting layer and a cathode, and the low refractive index layer has a refractive index of less than or equal to 1.80 at a wavelength of light extracted from the light-emitting layer.

公开(公告)号：US20210125962A1

公开(公告)日：2021-04-29

申请号：US16952303

申请日：2020-11-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daiki NAKAMURA ,  Yusuke NISHIDO ,  Satoshi SEO ,  Toshiki SASAKI ,  Ryohei YAMAOKA ,  Akihiro KAITA

IPC: H01L25/065 ,  H01L27/32

Abstract: A display panel includes a plurality of light-emitting elements. Light emitted from a first light-emitting element has a CIE 1931 chromaticity coordinate x of greater than 0.680 and less than or equal to 0.720 and a CIE 1931 chromaticity coordinate y of greater than or equal to 0.260 and less than or equal to 0.320. Light emitted from a second light-emitting element has a CIE 1931 chromaticity coordinate x of greater than or equal to 0.130 and less than or equal to 0.250 and a CIE 1931 chromaticity coordinate y of greater than 0.710 and less than or equal to 0.810. Light emitted from a third light-emitting element has a CIE 1931 chromaticity coordinate x of greater than or equal to 0.120 and less than or equal to 0.170 and a CIE 1931 chromaticity coordinate y of greater than or equal to 0.020 and less than 0.060.

公开(公告)号：US20190304951A1

公开(公告)日：2019-10-03

申请号：US16447655

申请日：2019-06-20

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daiki NAKAMURA ,  Yusuke NISHIDO ,  Satoshi SEO ,  Toshiki SASAKI ,  Ryohei YAMAOKA ,  Akihiro KAITA

IPC: H01L25/065 ,  H01L27/32

Abstract: A display panel includes a plurality of light-emitting elements. Light emitted from a first light-emitting element has a CIE 1931 chromaticity coordinate x of greater than 0.680 and less than or equal to 0.720 and a CIE 1931 chromaticity coordinate y of greater than or equal to 0.260 and less than or equal to 0.320. Light emitted from a second light-emitting element has a CIE 1931 chromaticity coordinate x of greater than or equal to 0.130 and less than or equal to 0.250 and a CIE 1931 chromaticity coordinate y of greater than 0.710 and less than or equal to 0.810. Light emitted from a third light-emitting element has a CIE 1931 chromaticity coordinate x of greater than or equal to 0.120 and less than or equal to 0.170 and a CIE 1931 chromaticity coordinate y of greater than or equal to 0.020 and less than 0.060.

公开(公告)号：US20180151539A1

公开(公告)日：2018-05-31

申请号：US15817497

申请日：2017-11-20

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daiki NAKAMURA ,  Yusuke NISHIDO ,  Satoshi SEO ,  Toshiki SASAKI ,  Ryohei YAMAOKA ,  Akihiro KAITA

IPC: H01L25/065 ,  H01L27/32

CPC classification number: H01L25/0652 ,  H01L27/3206 ,  H01L27/3211 ,  H01L27/3267 ,  H01L27/3293

Abstract: A display panel includes a plurality of light-emitting elements. Light emitted from a first light-emitting element has a CIE 1931 chromaticity coordinate x of greater than 0.680 and less than or equal to 0.720 and a CIE 1931 chromaticity coordinate y of greater than or equal to 0.260 and less than or equal to 0.320. Light emitted from a second light-emitting element has a CIE 1931 chromaticity coordinate x of greater than or equal to 0.130 and less than or equal to 0.250 and a CIE 1931 chromaticity coordinate y of greater than 0.710 and less than or equal to 0.810. Light emitted from a third light-emitting element has a CIE 1931 chromaticity coordinate x of greater than or equal to 0.120 and less than or equal to 0.170 and a CIE 1931 chromaticity coordinate y of greater than or equal to 0.020 and less than 0.060.

公开(公告)号：US20180019445A1

公开(公告)日：2018-01-18

申请号：US15718498

申请日：2017-09-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tsunenori Suzuki ,  Shogo UESAKA ,  Ryohei YAMAOKA ,  Satoshi SEO

IPC: H01L51/52 ,  H01L51/50 ,  H01L27/32 ,  H01L51/00

CPC classification number: H01L51/5278 ,  H01L27/3209 ,  H01L27/3211 ,  H01L27/322 ,  H01L51/0052 ,  H01L51/0054 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0077 ,  H01L51/0085 ,  H01L51/0091 ,  H01L51/5012 ,  H01L2251/53

Abstract: A tandem light-emitting element in which generation of crosstalk can be suppressed even when the element is applied to a high-definition display is provided. In the tandem light-emitting element, a layer in contact the anode side of an intermediate layer contains 2,9-bis(naphthalen-2-yl)-4,7-diphenyl-1,10-phenanthroline (abbreviation: NBPhen).