公开(公告)号：US20230200105A1

公开(公告)日：2023-06-22

申请号：US18077447

申请日：2022-12-08

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Sachiko KAWAKAMI ,  Nobuharu OHSAWA ,  Yasumasa YAMANE ,  Tsunenori SUZUKI ,  Tomoya AOYAMA ,  Naoaki HASHIMOTO ,  Kyoko TAKEDA ,  Yui YOSHIYASU ,  Masatoshi TAKABATAKE

IPC: H10K50/81 ,  H10K59/12 ,  H10K50/82

CPC classification number: H01L51/5206 ,  H01L27/3244 ,  H01L51/5221

Abstract: To inhibit an increase in voltage of an organic semiconductor device manufactured by a method including a step of forming an aluminum oxide film over and in contact with an organic semiconductor layer. An organic semiconductor device including a first electrode, a second electrode, an organic semiconductor layer, and a buffer layer is provided. The organic semiconductor layer is positioned between the first electrode and the second electrode. The buffer layer is positioned between the organic semiconductor layer and the second electrode. A side surface of the organic semiconductor layer and a side surface of the buffer layer are substantially aligned.

公开(公告)号：US20230150988A1

公开(公告)日：2023-05-18

申请号：US18096204

申请日：2023-01-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takuya Haruyama ,  Sachiko KAWAKAMI ,  Naoaki HASHIMOTO ,  Yusuke TAKITA ,  Tsunenori SUZUKI ,  Satoshi SEO

IPC: C07D407/12

CPC classification number: C07D407/12 ,  H10K50/11 ,  H10K77/10 ,  H10K50/84 ,  H10K85/633 ,  H10K85/6574 ,  H10K2101/10 ,  H10K50/171 ,  H10K50/16 ,  H10K50/15

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：US20230025460A1

公开(公告)日：2023-01-26

申请号：US17851288

申请日：2022-06-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yui Yoshiyasu ,  Sachiko KAWAKAMI ,  Naoaki HASHIMOTO ,  Tsunenori SUZUKI ,  Satoshi SEO

IPC: H01L51/50 ,  C07D471/04 ,  C07D403/10 ,  C07D409/10 ,  C07D401/14 ,  C07D491/048 ,  C07D403/14 ,  C07D519/00 ,  C07F7/22 ,  C07F15/00 ,  H01L51/00

Abstract: A light-emitting device with high resistance to heat in a fabrication process is provided. The light-emitting device includes an EL layer between an anode and a cathode. The EL layer includes at least a light-emitting layer and an electron-transport layer that includes a first electron-transport layer in contact with the light-emitting layer and a second electron-transport layer in contact with the first electron-transport layer. The first electron-transport layer includes a first heteroaromatic compound including at least one heteroaromatic ring. The second electron-transport layer includes a second heteroaromatic compound that includes at least one heteroaromatic ring and is different from the first heteroaromatic compound. The first heteroaromatic compound has a difference of 20° C. or less between the crystallization temperature (Tpc) of a powder state and the crystallization temperature (Ttc) of a thin film state. The second heteroaromatic compound has a difference of 100° C. or less between Tpc and Ttc.

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：US20220069246A1

公开(公告)日：2022-03-03

申请号：US17610760

申请日：2020-05-07

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Satoshi SEO ,  Hiroshi KADOMA ,  Takumu OKUYAMA ,  Naoaki HASHIMOTO ,  Yusuke TAKITA ,  Tsunenori SUZUKI

IPC: H01L51/50

Abstract: A light-emitting device having a long lifetime is provided. In a light-emitting device that includes an EL layer between a pair of electrodes, the carrier balance is controlled with a hole-injection layer and an electron-transport layer of the EL layer having certain structures, so that the carrier balance spontaneously changes during driving and the initial degradation of the light-emitting device is inhibited. In addition, at this time, the rate of the spontaneous change is low when an electron-injection barrier at the interface between a light-emitting layer and the electron-transport layer of the EL layer which are stacked is high; thus, it is possible to obtain a light-emitting device which is excellent in terms of long-term degradation.

公开(公告)号：US20210347782A1

公开(公告)日：2021-11-11

申请号：US16090477

申请日：2018-02-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kyoko TAKEDA ,  Harue OSAKA ,  Satoshi SEO ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO ,  Yusuke TAKITA

IPC: C07D491/048 ,  C07D495/00 ,  H01L51/00

Abstract: A novel organic compound is provided. Alternatively, an organic compound that exhibits light emission with favorable chromaticity is provided. Alternatively, an organic compound that exhibits blue light emission with favorable chromaticity is provided. Alternatively, an organic compound with favorable emission efficiency is provided. Alternatively, an organic compound having a high carrier-transport property is provided. Alternatively, an organic compound with favorable reliability is provided.
An organic compound including at least one amino group in which any one of a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, and a substituted or unsubstituted carbazolyl group is bonded to any one of a substituted or unsubstituted naphthobisbenzofuran skeleton, a substituted or unsubstituted naphthobisbenzothiophene skeleton, and a substituted or unsubstituted naphthobenzofuranobenzothiophene skeleton is provided.

公开(公告)号：US20210249619A1

公开(公告)日：2021-08-12

申请号：US17048642

申请日：2019-10-03

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Satoshi SEO ,  Tsunenori SUZUKI ,  Takumu OKUYAMA ,  Yusuke TAKITA ,  Naoaki HASHIMOTO ,  Hiromi SEO ,  Nobuharu OHSAWA ,  Toshiki SASAKI ,  Shunpei YAMAZAKI

IPC: H01L51/50

Abstract: A novel light-emitting device is provided. Alternatively, a light-emitting device with high emission efficiency is provided. Alternatively, a light-emitting device having along lifetime is provided. Alternatively, a light-emitting device having low driving voltage is provided. A light-emitting device including an EL layer including a first layer, a second layer, a third layer, a light-emitting layer, and a fourth layer in this order from the anode side is provided. The first layer includes a first organic compound and a second organic compound. The fourth layer includes a seventh organic compound. The first organic compound exhibits an electron-accepting property with respect to the second organic compound. The HOMO level of the second organic compound is from −5.7 eV to −5.4 eV. The HOMO level of the seventh organic compound is −6.0 eV or higher.

公开(公告)号：US20210242409A1

公开(公告)日：2021-08-05

申请号：US17160658

申请日：2021-01-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO

IPC: H01L51/00

Abstract: A novel light-emitting device that is highly convenient, useful, or reliable is provided. The light-emitting device includes a first electrode, a second electrode, and a first layer. The first layer contains a light-emitting material, a first material, and a second material. The first material has a first anthracene skeleton and a first substituent. The first substituent is bonded to the first anthracene skeleton and includes a heteroaromatic ring. The second material has a second anthracene skeleton, a second substituent, and a third substituent. The second substituent is bonded to the second anthracene skeleton and includes an aromatic ring whose ring structure is composed of carbon. The third substituent is bonded to the second anthracene skeleton and includes an aromatic ring whose ring structure is composed of carbon. The third substituent has a different structure from the second substituent.

公开(公告)号：US20210184130A1

公开(公告)日：2021-06-17

申请号：US17116031

申请日：2020-12-09

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kyoko TAKEDA ,  Harue OSAKA ,  Hiroshi KADOMA ,  Satoshi SEO ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO

IPC: H01L51/00 ,  C07D493/04 ,  C09K11/06

Abstract: A novel organic compound with favorable thermophysical properties is provided. An organic compound represented by General Formula (G1) is provided. At least one of X1 to X5 is a secondary or tertiary alkyl group having 3 to 6 carbon atoms in which a carbon atom bonded to a phenyl group branches. Each of R1 to R7 is independently any of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, and an unsubstituted or alkyl-substituted aryl group having 6 to 13 carbon atoms. Ar1 represents a substituted or unsubstituted condensed heteroaromatic ring skeleton having 8 to 60 carbon atoms and composed of two or more aromatic rings, and Ar2 represents a substituted or unsubstituted aryl group having 6 to 25 carbon atoms. Furthermore, n is any of 1 to 3.

公开(公告)号：US20210028371A1

公开(公告)日：2021-01-28

申请号：US16937793

申请日：2020-07-24

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takumu OKUYAMA ,  Naoaki HASHIMOTO ,  Yusuke TAKITA ,  Hiroshi KADOMA ,  Tsunenori SUZUKI ,  Satoshi SEO ,  Tomoya HIROSE

IPC: H01L51/00 ,  C07D491/048 ,  C07D401/10

Abstract: A novel light-emitting device is provided. A light-emitting device with high emission efficiency is provided. A light-emitting device having a long lifetime is provided. A light-emitting device with low driving voltage is provided. The light-emitting device includes an anode, a cathode, and an EL layer between the anode and the cathode. The EL layer includes a light-emitting layer and an electron-transport layer. The electron-transport layer is positioned between the light-emitting layer and the cathode. The electron-transport layer contains an electron-transport material. The electron-transport material is an organic compound including a first skeleton, a second skeleton, and a third skeleton. The first skeleton has a function of transporting electrons. The second skeleton has a function of accepting holes. The third skeleton includes a monocyclic π-electron deficient heteroaromatic ring.