Invention Grant
- Patent Title: Light emitting device, production method thereof, and display device including the same
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Application No.: US18048484Application Date: 2022-10-21
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Publication No.: US11706936B2Publication Date: 2023-07-18
- Inventor: Kwanghee Kim , Moon Gyu Han , Eun Joo Jang , Hyo Sook Jang
- Applicant: SAMSUNG ELECTRONICS CO., LTD.
- Applicant Address: KR Suwon-si
- Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee Address: KR Gyeonggi-Do
- Agency: Cantor Colburn LLP
- Priority: KR 20190137994 2019.10.31
- Main IPC: H10K50/115
- IPC: H10K50/115 ; C09K11/02 ; C09K11/88 ; H10K71/00 ; 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.
Public/Granted literature
- US20230075189A1 LIGHT EMITTING DEVICE, PRODUCTION METHOD THEREOF, AND DISPLAY DEVICE INCLUDING THE SAME Public/Granted day:2023-03-09
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