公开(公告)号：US10074822B2

公开(公告)日：2018-09-11

申请号：US14922636

申请日：2015-10-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Satoshi Seo ,  Tsunenori Suzuki ,  Takeyoshi Watabe ,  Kunihiko Suzuki ,  Toshiki Hamada ,  Rina Nakamura ,  Hayato Yamawaki ,  Ayumi Sato ,  Harue Osaka

IPC: H01L51/50 ,  H01L51/00

CPC classification number: H01L51/5092 ,  H01L51/0025 ,  H01L51/0054 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0085 ,  H01L51/5072

Abstract: To provide a novel light-emitting element or a highly reliable light-emitting element. To provide a light-emitting device, a display device, an electronic device, and a lighting device each of which can be manufactured at a low cost. To provide a light-emitting element including 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 injection transport layer between the light-emitting layer and the cathode, and the amount of a halogen detected from a material forming the electron injection transport layer is less than or equal to 30 ppm.

公开(公告)号：US10153449B2

公开(公告)日：2018-12-11

申请号：US14882701

申请日：2015-10-14

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Takeyoshi Watabe ,  Rina Nakamura ,  Harue Osaka ,  Ayumi Sato ,  Kunihiko Suzuki ,  Hayato Yamawaki

IPC: H01L51/50 ,  H01L51/00

Abstract: A novel light-emitting element or a highly reliable light-emitting element is provided. The light-emitting element includes an anode, a cathode, and an EL layer between the anode and the cathode. The EL layer includes at least a light-emitting layer. The light-emitting layer includes at least a first organic compound and a second organic compound. The energy for liberating halogen from a halogen-substituted product of the first organic compound in a radical anion state and in a triplet excited state is less than or equal to 1.00 eV. The amount of halogen-substituted product in the second organic compound is not increased with an increase in driving time of the light-emitting element.