公开(公告)号：US20180323350A1

公开(公告)日：2018-11-08

申请号：US15838594

申请日：2017-12-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jeong Rok Oh ,  Jeong Eun Yun ,  Sung Woo Choi ,  Cho Hui Kim ,  Chul Soo Yoon

IPC: H01L33/50

CPC classification number: H01L33/504 ,  C09K11/7734 ,  H01L25/0753 ,  H01L33/486 ,  H01L33/60 ,  H01L33/62

Abstract: A white light emitting device may include a blue light emitting diode configured to emit blue light and a plurality of wavelength conversion materials configured to convert the blue light into light having different wavelengths based on being excited by the blue light, and emit white light based on the converting, wherein the emitted white light is associated with an Illuminating Engineering Society (IES) TM-30-15 Fidelity Index (Rf) in a range of 78 to 89, an IES TM-30-15 Chroma Change by Hue Index Rcs15 in a range of 7% to 16%, and an IES TM-30-15 Chroma Change by Hue Index Rcs16 in a range of 7% to 16%, and a color difference between a reflection spectrum of a white specimen of the emitted white light, and International Commission on Illumination (CIE) Standard illuminant D65, that is equal to or less than 106.

公开(公告)号：US10658551B2

公开(公告)日：2020-05-19

申请号：US16043546

申请日：2018-07-24

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sung Woo Choi ,  Jeong Rok Oh ,  Jeong Eun Yun ,  Chul Soo Yoon

IPC: H01L33/50 ,  H01L33/60 ,  H01L33/64 ,  H01L33/42 ,  C04B35/64 ,  H01L33/06 ,  C03C14/00 ,  C03C8/08 ,  C03C8/14 ,  H01L33/56 ,  H01L23/08 ,  F21V8/00 ,  B82Y20/00 ,  C03C3/062

Abstract: A wavelength-converting film includes a sintered body formed of a mixture of a wavelength-converting material and a glass composition. The wavelength-converting material includes a quantum dot having a core-shell structure and a protective layer coating a surface of the quantum dot. A shell of the quantum dot contains at least one of Zn, S, and Se, the protective layer does not contain S and Se, and the glass composition includes a SnO2—P2O5—SiO2-based composition.

公开(公告)号：US10446722B2

公开(公告)日：2019-10-15

申请号：US15987195

申请日：2018-05-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sung Woo Choi ,  Cho Hui Kim ,  Jeong Eun Yun ,  Chul Soo Yoon

IPC: H01L33/50 ,  H01L25/075 ,  H01L33/54 ,  H01L33/56 ,  F21V29/76 ,  F21K9/23 ,  F21K9/27 ,  F21Y115/10 ,  H01L33/32 ,  H01L33/06 ,  F21V29/503 ,  H01L33/62

Abstract: A white light emitting device includes a substrate, a first light emitting diode configured to emit first blue light having a peak intensity at a wavelength within the range of 445 nm to 455 nm, a second light emitting diode configured to emit second blue light having a peak intensity at a wavelength within the range of 465 nm to 495 nm, and a wavelength conversion unit configured to convert portions of the first blue light and the second blue light, and to provide white light formed by a combination of the converted portions of the first blue light and the second blue light with unconverted portions of the first blue light and the second blue light. The wavelength conversion unit includes a first wavelength conversion material configured to emit first light having a peak intensity at a wavelength within the range of 520 nm to 560 nm, and a second wavelength conversion material configured to emit second light having a peak intensity at a wavelength within the range of 600 nm to 645 nm.

公开(公告)号：US10312419B2

公开(公告)日：2019-06-04

申请号：US15838594

申请日：2017-12-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jeong Rok Oh ,  Jeong Eun Yun ,  Sung Woo Choi ,  Cho Hui Kim ,  Chul Soo Yoon

IPC: H01L33/50 ,  C09K11/77 ,  H01L25/075 ,  H01L33/62 ,  H01L33/60 ,  H01L33/48

Abstract: A white light emitting device may include a blue light emitting diode configured to emit blue light and a plurality of wavelength conversion materials configured to convert the blue light into light having different wavelengths based on being excited by the blue light, and emit white light based on the converting, wherein the emitted white light is associated with an Illuminating Engineering Society (IES) TM-30-15 Fidelity Index (Rf) in a range of 78 to 89, an IES TM-30-15 Chroma Change by Hue Index Rcs15 in a range of 7% to 16%, and an IES TM-30-15 Chroma Change by Hue Index Rcs16 in a range of 7% to 16%, and a color difference between a reflection spectrum of a white specimen of the emitted white light, and International Commission on Illumination (CIE) Standard illuminant D65, that is equal to or less than 106.