公开(公告)号：US11917908B2

公开(公告)日：2024-02-27

申请号：US17116222

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 ,  C07D209/88 ,  C07D405/12 ,  H10K85/60 ,  H10K50/11

CPC classification number: H10K85/636 ,  C07D209/88 ,  C07D405/12 ,  C07D493/04 ,  C09K11/06 ,  H10K85/633 ,  C09K2211/1022 ,  H10K50/11 ,  H10K85/615 ,  H10K85/622 ,  H10K85/6572 ,  H10K85/6574

Abstract: A novel organic compound represented by General Formula (G1) is provided. In General Formula (G1), X1 and X2 each independently represent a secondary or tertiary alkyl group having 3 to 6 carbon atoms and having a branched carbon atom which is bonded to a phenyl group. In addition, Ar1 represents a substituted or unsubstituted condensed aromatic ring skeleton having 10 to 60 carbon atoms and composed of two or more rings or a substituted or unsubstituted condensed heteroaromatic ring skeleton having 8 to 60 carbon atoms and composed of two or more rings. Furthermore, Ar2 represents a substituted or unsubstituted aryl group having 6 to 25 carbon atoms. Moreover, n represents any of 1 to 3, and in the case where n is 2 or more, two or more groups bonded to Ar1 may be identical or different.

公开(公告)号：US11889759B2

公开(公告)日：2024-01-30

申请号：US17392842

申请日：2021-08-03

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Tsunenori Suzuki ,  Naoaki Hashimoto

IPC: H10K85/60 ,  H10K50/11 ,  H10K50/155 ,  H10K50/16 ,  H10K50/84 ,  H10K101/40 ,  H10K101/30

CPC classification number: H10K85/6572 ,  H10K50/11 ,  H10K50/155 ,  H10K50/166 ,  H10K50/841 ,  H10K85/615 ,  H10K85/654 ,  H10K2101/30 ,  H10K2101/40

Abstract: Provided is a novel light-emitting element, a light-emitting element with a long lifetime, or a light-emitting element with high emission efficiency. The light-emitting element includes an EL layer between a pair of electrodes. The EL layer includes at least a light-emitting layer containing a fluorescent substance and a host material, a first electron-transport layer containing a first electron-transport material, and a second electron-transport layer containing a second electron-transport material, which are in contact with each other and in this order. The LUMO level of each of the host material and the second electron-transport material is higher than the LUMO level of the first electron-transport material.

公开(公告)号：US11723264B2

公开(公告)日：2023-08-08

申请号：US17198566

申请日：2021-03-11

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: H01L51/00 ,  H01L51/50 ,  H10K85/30 ,  H10K50/11 ,  H10K50/13 ,  H10K50/16 ,  H10K101/10 ,  H10K85/60 ,  H10K101/00 ,  H10K101/30

CPC classification number: H10K85/342 ,  H10K50/11 ,  H10K50/13 ,  H10K50/16 ,  H10K85/622 ,  H10K85/631 ,  H10K85/633 ,  H10K85/6572 ,  H10K85/6576 ,  H10K2101/10 ,  H10K2101/27 ,  H10K2101/30 ,  H10K2101/90

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：US11659758B2

公开(公告)日：2023-05-23

申请号：US16914530

申请日：2020-06-29

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: H01L27/28 ,  H01L27/30 ,  H01L27/32 ,  H01L51/50 ,  H01L51/52

CPC classification number: H01L27/288 ,  H01L27/307 ,  H01L27/323 ,  H01L27/3244 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5284 ,  H01L2251/552

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：US11641777B2

公开(公告)日：2023-05-02

申请号：US16764715

申请日：2018-11-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: C07D209/80 ,  H01L51/00 ,  C09K11/06 ,  H01L51/50

Abstract: An object is to provide a novel organic compound. Another object is to provide a novel light-emitting device. Another object is to provide a light-emitting device with favorable emission efficiency. Another object is to provide a light-emitting device with a favorable lifetime. Another object is to provide a light-emitting device with a low driving voltage. A dibenzo[c,g]carbazole derivative represented by the following general formula (G1) and a light-emitting device using it are provided. Note that at least one of R11 to R22 represents a substituent that has 14 to 60 carbon atoms in total and contains a condensed tricyclic to hexacyclic aromatic hydrocarbon skeleton, and the others independently represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, and a substituted or unsubstituted aryl group having 6 to 25 carbon atoms.

公开(公告)号：US10854682B2

公开(公告)日：2020-12-01

申请号：US15866879

申请日：2018-01-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Toshiki Sasaki ,  Tsunenori Suzuki ,  Sachiko Kawakami ,  Naoaki Hashimoto

IPC: H01L27/32 ,  C07D307/77 ,  C09K11/06 ,  H01L51/00 ,  H01L51/50 ,  H01L51/52

Abstract: A light-emitting device, an electronic device, or a lighting device with low power consumption and high reliability is provided. The light-emitting device includes a first light-emitting element, a second light-emitting element, a third light-emitting element, and a fourth light-emitting element. The first to fourth light-emitting elements include the same EL layer between an anode and a cathode. The EL layer includes a first light-emitting layer and a second light-emitting layer. The first light-emitting layer contains a fluorescent substance. The peak wavelength of an emission spectrum of the fluorescent substance in a toluene solution of the fluorescent substance is 440 nm to 460 nm, preferably 440 nm to 455 nm. The second light-emitting layer contains a phosphorescent substance. The first light-emitting element exhibits blue emission. The second light-emitting element exhibits green emission. The third light-emitting element exhibits red emission. The fourth light-emitting element exhibits yellow emission.

公开(公告)号：US10439146B2

公开(公告)日：2019-10-08

申请号：US15223244

申请日：2016-07-29

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kaori Ogita ,  Sachiko Kawakami ,  Tsunenori Suzuki ,  Naoaki Hashimoto ,  Yusuke Takita ,  Satoshi Seo

IPC: H01L51/00 ,  C07D307/77 ,  C09K11/02 ,  C09K11/06 ,  H01L51/50

Abstract: In an organic compound, two groups each including a benzonaphthofuranylamine skeleton are bonded to a central skeleton including a fluorene skeleton. The organic compound emits favorable blue light. Furthermore, the organic compound has a high hole-transport property.

公开(公告)号：US20180151815A1

公开(公告)日：2018-05-31

申请号：US15882178

申请日：2018-01-29

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: H01L51/00 ,  H01L51/50

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：US09093649B2

公开(公告)日：2015-07-28

申请号：US14338897

申请日：2014-07-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Sachiko Kawakami ,  Naoaki Hashimoto ,  Tsunenori Suzuki ,  Satoshi Seo

IPC: H01L51/00 ,  H01L51/50

CPC classification number: H01L51/006 ,  C07C211/61 ,  C07D307/77 ,  C09K11/06 ,  C09K2211/1011 ,  C09K2211/1022 ,  C09K2211/1088 ,  H01L51/0054 ,  H01L51/0061 ,  H01L51/0073 ,  H01L51/5012

Abstract: An organic compound that emits blue light with high color purity and has a long lifetime is provided as a novel substance. The organic compound is a fluorescent organic compound having a structure in which benzonaphthofuranylamine is bonded to the 1-position and the 6-position of a pyrene skeleton.

Abstract translation: 作为新物质，提供了发出高纯度且寿命长的蓝光的有机化合物。 有机化合物是具有苯并萘并呋喃胺与芘骨架的1位和6位结合的荧光有机化合物。

公开(公告)号：US20140291647A1

公开(公告)日：2014-10-02

申请号：US14226360

申请日：2014-03-26

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: H01L51/00

CPC classification number: H01L51/0085 ,  H01L51/0054 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/5012 ,  H01L51/5016 ,  H01L51/504 ,  H01L51/5072 ,  H01L2251/5376 ,  H01L2251/5384 ,  H01L2251/552

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.

Abstract translation: 提供了包括一对电极之间的多个发光层并且具有低驱动电压和高发光效率的发光元件。 提供了包括阴极和阳极之间的第一至第三发光层的发光元件。 第一发光层包括第一磷光材料和第一电子传输材料; 第二发光层包括第二磷光材料和第二电子传输材料; 第三发光层包括荧光材料和第三电子传输材料; 第一至第三发光元件设置成与位于阴极侧的电子传输层接触; 并且包含在电子传输层中的材料的三重激发能级低于第一电子传输材料和第二电子传输材料的三重激发能级。