公开(公告)号：US12193252B2

公开(公告)日：2025-01-07

申请号：US18300665

申请日：2023-04-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Heejae Lee ,  Sung Woo Kim ,  Eun Joo Jang ,  Dae Young Chung ,  Moon Gyu Han

IPC: H10K50/16 ,  H10K50/115 ,  H10K50/15 ,  H10K50/17

Abstract: A light emitting device includes: a first electrode and a second electrode with a surface facing the first electrode; an emission layer disposed between the first electrode and the second electrode and including a quantum dot (e.g., a plurality of quantum dots); and an electron auxiliary layer disposed between the emission layer and the second electrode. The electron auxiliary layer includes a first layer including a first metal oxide, and a second layer disposed on the first layer and including a second metal oxide. A roughness of an interface between the second layer and the second electrode is less than about 10 nm as determined by an electron microscopy analysis. An absolute value of a difference between a conduction band edge energy level of the second layer and a work function of the second electrode may be less than or equal to about 0.5 eV, and a conduction band edge energy level of the first layer may be less than the conduction band edge energy level of the second layer.

公开(公告)号：US12016190B2

公开(公告)日：2024-06-18

申请号：US17318460

申请日：2021-05-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Moon Gyu Han ,  Dae Young Chung ,  Kwanghee Kim ,  Eun Joo Jang ,  Chan Su Kim ,  Kun Su Park ,  Won Sik Yoon

IPC: H10K50/115 ,  H10K50/15 ,  H10K50/16 ,  H10K71/00 ,  H10K85/60 ,  H10K101/00 ,  H10K102/00

CPC classification number: H10K50/115 ,  H10K50/15 ,  H10K50/157 ,  H10K50/167 ,  H10K71/00 ,  H10K85/631 ,  H10K85/633 ,  H10K50/16 ,  H10K2101/00 ,  H10K2102/331

Abstract: An electroluminescent device includes a first electrode and a second electrode facing each other; an emission layer disposed between the first electrode and the second electrode and including a plurality of quantum dots and a first hole transporting material having a substituted or unsubstituted C4 to C20 alkyl group attached to a backbone structure; a hole transport layer disposed between the emission layer and the first electrode and including a second hole transporting material; and an electron transport layer disposed between the emission layer and the second electrode.

公开(公告)号：US11925043B2

公开(公告)日：2024-03-05

申请号：US17072436

申请日：2020-10-16

Applicant: SAMSUNG ELECTRONICS CO., LTD

Inventor： Moon Gyu Han ,  Heejae Lee ,  Eun Joo Jang ,  Tae Ho Kim ,  Kun Su Park ,  Won Sik Yoon ,  Hyo Sook Jang

IPC: H10K50/115 ,  H10K50/11 ,  H10K50/16 ,  H10K71/00 ,  H10K71/12 ,  H10K101/40 ,  H10K101/30

CPC classification number: H10K50/115 ,  H10K50/11 ,  H10K50/166 ,  H10K71/00 ,  H10K71/12 ,  H10K2101/30 ,  H10K2101/40

Abstract: A quantum dot light-emitting device including first electrode and a second electrode, a quantum dot layer between the first electrode and the second electrode, a first electron transport layer and a second electron layer disposed between the quantum dot layer and the second electrode. The second electron transport layer is disposed between the quantum dot layer and the first electron transport layer, wherein each of the first electron transport layer and the second electron transport layer includes an inorganic material. A lowest unoccupied molecular orbital energy level of the second electron transport layer is shallower than a lowest unoccupied molecular orbital energy level of the first electron transport layer, and a lowest unoccupied molecular orbital energy level of the quantum dot layer is shallower than a lowest unoccupied molecular orbital energy level of the second electron transport layer. An electronic device including the quantum dot light-emitting device.

公开(公告)号：US11737301B2

公开(公告)日：2023-08-22

申请号：US17226158

申请日：2021-04-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dae Young Chung ,  Moon Gyu Han ,  Oul Cho ,  Tae Hyung Kim ,  Sujin Park ,  Hongkyu Seo ,  Eun Joo Jang

IPC: H10K50/19 ,  C09K11/06 ,  C09K11/02 ,  H10K50/115 ,  H10K71/00 ,  H10K71/15 ,  H10K85/10 ,  H10K85/60

CPC classification number: H10K50/19 ,  C09K11/025 ,  C09K11/06 ,  H10K50/115 ,  H10K71/00 ,  H10K71/15 ,  C09K2211/10 ,  H10K85/111 ,  H10K85/115 ,  H10K85/1135 ,  H10K85/626

Abstract: An electroluminescent device including a first electrode, a hole transport layer disposed on the first electrode, a first emission layer disposed on the hole transport layer, the first emission layer including a first light emitting particle on which a first ligand and a second ligand having a hole transporting property are attached, a second emission layer disposed on the first emission layer, the second emission layer including a second light emitting particle on which a first ligand and a third ligand having an electron transporting property are attached, an electron transport layer disposed on the second emission layer, and a second electrode disposed on the electron transport layer, wherein a solubility of the second ligand in a solvent is different than a solubility of the third ligand in the solvent and a display device including the same.

公开(公告)号：US11690542B2

公开(公告)日：2023-07-04

申请号：US17005396

申请日：2020-08-28

Applicant: Samsung Electronics Co., Ltd.

Inventor： Chui Joon Heo ,  Kyung Bae Park ,  Takkyun Ro ,  Kwang Hee Lee ,  Dongseon Lee ,  Yong Wan Jin ,  Moon Gyu Han

IPC: A61B5/1455 ,  A61B5/0295 ,  A61B5/145 ,  A61B5/00 ,  A61B5/024 ,  A61B5/026

CPC classification number: A61B5/1455 ,  A61B5/0295 ,  A61B5/14532 ,  A61B5/0261 ,  A61B5/02416 ,  A61B5/489

Abstract: Disclosed is a non-invasive biometric sensor including a light source, an organic photodetector, and a detector. The light source is configured to irradiate light in a desired (and/or alternatively predetermined) wavelength range to a body part. The organic photodetector is configured to sense the light in the desired (and/or alternatively predetermined) wavelength range in response to the light in the desired (and/or alternatively predetermined) range being transmitted through the body part. The detector is configured to determine biomedical information of the body part based on an amount of the light sensed by the organic photodetector.

公开(公告)号：US11495766B2

公开(公告)日：2022-11-08

申请号：US17079319

申请日：2020-10-23

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sung woo Kim ,  Moon Gyu Han ,  Eun joo Jang ,  Kun su Park

IPC: H01L51/50 ,  C09K11/88 ,  H01L51/00 ,  G09G3/32

Abstract: An electroluminescent device and a display device including the electroluminescent device. The electroluminescent device includes a first electrode and a second electrode each having a surface opposite the other; a light emitting layer disposed between the first electrode and the second electrode, the light emitting layer including quantum dots; and an electron transport layer disposed between the light emitting layer and the second electrode, the electron transport layer including inorganic material nanoparticles including an anion dopant including P, N, C, Cl, F, Br, S, or a combination thereof.

公开(公告)号：US11495764B2

公开(公告)日：2022-11-08

申请号：US17026622

申请日：2020-09-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tae Ho Kim ,  Moon Gyu Han ,  Hongkyu Seo ,  Heejae Lee ,  Eun Joo Jang

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

Abstract: An electroluminescent device and a display device including the same are disclosed, wherein the electroluminescent device includes a first electrode; a hole transport layer disposed on the first electrode; a light emitting layer including a first light emitting layer disposed on the hole transport layer, the first emitting layer including a first quantum dot, and a second light emitting layer including a second quantum dot and an n-type organic semiconductor, the second light emitting layer disposed on the first light emitting layer; an electron transport layer disposed on the second light emitting layer; and a second electrode disposed on the electron transport layer.

公开(公告)号：US11482686B2

公开(公告)日：2022-10-25

申请号：US17085167

申请日：2020-10-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kwanghee Kim ,  Moon Gyu Han ,  Eun Joo Jang ,  Hyo Sook Jang

IPC: H01L29/06 ,  H01L51/50 ,  H01L51/56 ,  C09K11/02 ,  C09K11/88 ,  B82Y40/00 ,  B82Y20/00

Abstract: A light emitting device including a first electrode and a second electrode spaced from each other, and, a light emitting film between the first electrode and the second electrode, wherein the light emitting film has a first surface facing the second electrode and a second surface opposite thereto, the light emitting film includes a quantum dot layer including a plurality of quantum dots and a matrix including a metal chalcogenide, the plurality of quantum dots includes selenium, the matrix covers at least a portion of the quantum dot layer, the metal chalcogenide comprises zinc and sulfur, and in an X-ray photoelectron spectroscopic analysis of the first surface of the light emitting film, a mole ratio of zinc with respect to selenium is greater than or equal to about 2:1 and a mole ratio of sulfur with respect to selenium is greater than or equal to about 1.1:1.

公开(公告)号：US11432774B2

公开(公告)日：2022-09-06

申请号：US16255981

申请日：2019-01-24

Applicant: Samsung Electronics Co., Ltd.

Inventor： Chui Joon Heo ,  Kyung Bae Park ,  Dongseon Lee ,  Moon Gyu Han ,  Takkyun Ro ,  Youn Hee Lim ,  Yong Wan Jin ,  Kiyohiko Tsutsumi

IPC: A61B5/00 ,  A61B5/1455 ,  H01L27/30 ,  A61B5/024 ,  A61B5/0205 ,  H01L51/42 ,  A61B5/02 ,  H01L27/146

Abstract: A pulse oximeter may include a photoelectric conversion device having wavelength selectivity so that a low output LED may be included in the pulse oximeter to prevent skin damage and to reduce power consumption. The pulse oximeter includes a light emitting device configured to emit white light and a sensor configured to detect transmitted light that is received from the light emitting device. The sensor includes a near infrared organic photoelectric conversion device configured to sense a particular near infrared wavelength spectrum of light and a red photoelectric conversion device configured to sense a particular red wavelength spectrum of light.

公开(公告)号：US11261172B2

公开(公告)日：2022-03-01

申请号：US15934069

申请日：2018-03-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Moon Gyu Han ,  Kyung Bae Park ,  Dongseon Lee ,  Yong Wan Jin ,  Chul Joon Heo

IPC: C07D401/14 ,  C07C211/54 ,  C07D401/04 ,  C07D403/04 ,  C09B23/00 ,  C09B57/00 ,  G02B5/20 ,  G02B5/22 ,  H01L51/00 ,  H04N5/225 ,  C09B23/01 ,  H01L27/146 ,  H01L27/30

Abstract: A squarylium compound has high transmittance in a visible wavelength spectrum of light and is configured to selectively absorb light in an infrared/near infrared wavelength spectrum of light.