Samsung Electronics Co., Ltd.

Samsung Led Co., Ltd.

Samsung Electro-mechanics Co., Ltd.

Chul Soo Yoon

Hyong Sik Won

Jong Rak Sohn

Jong Won Park

Sang Hyun Kim

Il Woo Park

Youn Gon Park

Chang Bun Yoon

Sung Woo Choi

Tae Hoon Kim

In Hyung Lee

Jeong Ho Ryu

Ji Ho You

Chang Hoon Kwak

Chan Suk Min

Min Jung Park

Seong Min Kim

Jeong Eun Yun

Jeong Rok Oh

Chi Woo Lee

Seul Gee Lee

Sung Hak Jo

Dong Hoon Lee

Do Hwan Kim

Joon Ho Yoon

Sang Hoon Ahn

Won Young Song

Woon Seok Kim

Cho Hui Kim

Jung Eun Yoon

Hideo Suzuki

Tae Young Choi

Hun Joo Hahm

Young Sam Park

Do Hoon Kim

Young Il Kim

Young Sik Jeong

Hyo Jung Kim

Yun Seup Chung

Woo Jung Park

Ji Hyun Lim

Dong Kyun Yim

Bong Goo Yun

Young Mok Lee

Hyun Bae Park

Sun Yeol Choi

Tae Min Ahn

Subedi Rabindra

Giun Lim

Mihail Nazarov

Izawa Takamasa

Sik Won Hyong

There is provided a fluoride phosphor composite including: fluoride phosphor core particles that may be expressed by the empirical formula AMF:Mn, wherein A may be at least one selected from the group consisting of Li, Na, K, Rb, and Cs, M may be at least one selected from the group consisting of Si, Ti, Zr, Hf, Ge, and Sn, the composition ratio (x) of A may satisfy 2&#x2264;x&#x2264;3, the composition ratio (y) of F may satisfy 4&#x2264;y&#x2264;7, each fluoride phosphor composite particle may be coated with a Mn-free fluoride coating. The Mn-free fluoride coating may have a thickness less than or equal to 35% of the size of each fluoride phosphor composite particle.

Fluoride phosphor composite, method of manufacturing fluoride phosphor composite, white light emitting apparatus, display apparatus, lighting device, and electronic device

A fluoride phosphor includes fluoride particles represented by AMF:Mnwhere A is at least one selected from lithium (Li), sodium (Na), potassium (K), rubidium (Rb), and cesium (Cs), M is at least one selected from silicon (Si), titanium (Ti), zirconium (Zr), hafnium (Hf), germanium (Ge) and tin (Sn), a compositional ratio x of A satisfies 2&#x2264;x&#x2264;3, and a compositional ratio y of F satisfies 4&#x2264;y&#x2264;7; and an organic material physically adsorbed onto surfaces of the fluoride particles to allow the fluoride particles to have hydrophobicity. The fluoride particles have a concentration of Mngradually reduced from respective centers to respective surfaces of the fluoride particles.

Fluoride phosphor, method of manufacturing the same, and light emitting device

A method of manufacturing a fluoride phosphor represented by a chemical formula AMF:Mnincludes forming a first mixture by mixing a first raw material containing AMFand a second raw material containing AF or AHF, forming a second mixture by mixing the first mixture and a sintering aid, and firing the second mixture. In the chemical formula, A is at least one selected from Li, Na, K, Rb, Cs and mixtures thereof, and M is at least one selected from Si, Ti, Zr, Hf, Ge, Sn, and mixtures thereof.

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 SnO&#x2014;PO&#x2014;SiO-based composition.

Wavelength-converting film and semiconductor light emitting apparatus having the same

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.

White light emitting device

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 (R) in a range of 78 to 89, an IES TM-30-15 Chroma Change by Hue Index Rin a range of 7% to 16%, and an IES TM-30-15 Chroma Change by Hue Index Rin 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.

White light emitting devices

There is provided a red phosphor that may include a nitride represented by a formula of (SrBaEu)SiN, wherein 0&#x3c;x&#x3c;0.7, and 0&#x3c;y&#x3c;0.1. The red phosphor may emit light having a peak wavelength in a range of 600 nm to 630 nm when irradiated by an excitation source and the excitation source may be a blue light source having a dominant wavelength in a range of 420 nm to 470 nm.

Red phosphor, white light emitting apparatus, display apparatus, and lighting apparatus

A method of manufacturing a fluoride phosphor, the method comprising: preparing a hydrofluoric (HF) solution in which a first source material and a fluoride containing Mnare dissolved; and forming fluoride particles by introducing a second source material to the HF solution in each of a plurality of instances.

Method of manufacturing fluoride phosphor, white light emitting apparatus, display apparatus, and lighting device

A red phosphor contains a nitride having a formula of SrMgSiN:Eu, in which x, y, z, and w satisfy the relationships 0.5&#x2264;x&#x2264;2, 2.5&#x2264;y&#x2264;3.5, 0.5&#x2264;z&#x2264;1.5 and 0&#x3c;w&#x2264;0.1. The red phosphor is configured to emit light having a peak wavelength in a range of from 610 nm to 625 nm when irradiated by an excitation source, and the excitation source may be a blue light source having a dominant wavelength in a range of 420 nm to 470 nm. In such a case, the spectrum of the emitted light has a full-width at half-maximum (FWHM) less than or equal to 55 nm.

Red phosphor, white light emitting device and lighting apparatus

A fluoride phosphor may include: a fluoride represented by a composition formula: AMF:Mn, where A is at least one selected from among Li, Na, K, Rb, and Cs, M is at least one selected from among Si, Ti, Zr, Hf, Ge and Sn, a composition ratio (x) of A satisfies 2&#x2266;x&#x2266;3, a composition ratio (y) of F satisfies 4&#x2266;y&#x2266;7, and a composition ratio (z) of Mn satisfies 0&#x3c;z&#x2266;0.17.

Fluoride phosphor and light emitting device, and methods of manufacturing the same

A light emitting device package includes a reflective unit having a first surface and a second surface opposing the first surface and having a through hole formed in a central portion of the reflective unit to penetrate through the first and second surfaces, a light emitting device disposed in the through hole and externally exposed to one of the first and second surfaces, and an optical device disposed on the first surface of the reflective unit to cover the light emitting device. The optical device allows light generated by the light emitting device to be partially transmitted and partially reflected to be emitted externally.

Light emitting device package and lighting device having the same

There is provided a fluoride phosphor composite including: fluoride phosphor core particles that may be expressed by the empirical formula AMF:Mn, wherein A may be at least one selected from the group consisting of Li, Na, K, Rb, and Cs, M may be at least one selected from the group consisting of Si, Ti, Zr, Hf, Ge, and Sn, the composition ratio (x) of A may satisfy 2&#x2266;x&#x2266;3, the composition ratio (y) of F may satisfy 4&#x2266;y&#x2266;7, each fluoride phosphor composite particle may be coated with a Mn-free fluoride coating. The Mn-free fluoride coating may have a thickness less than or equal to 35% of the size of each fluoride phosphor composite particle.

A semiconductor light emitting device package includes: a light emitting device; a wavelength conversion unit formed in a path of light emitted from the light emitting device and including a mixture of a wavelength conversion material and a glass material; and a reflective film disposed on an upper surface of the wavelength conversion unit and reflecting a partial amount of light emitted from the light emitting device and allowing a partial amount of light emitted from the light emitting device to be transmitted therethrough.

Semiconductor light emitting device package

There is provided a method of manufacturing a light emitting device which includes preparing a light emitting element emitting excitation light and a substrate on which the light emitting element is disposed. A fluoride phosphor is provided to absorb excitation light emitted from the light emitting element to emit visible light, and is represented by Chemical Formula (). The fluoride phosphor is disposed on at least one of the light emitting element and the substrate, wherein Chemical Formula (): AMF:Mn(wherein 2&#x2266;x&#x2266;3 and 4&#x2266;y&#x2266;7, A is at least one element selected from the group consisting of Li, Na, K, Rb, and Cs, and M is at least one element selected from the group consisting Si, Ti, Zr, Hf, Ge, and Sn).

Method of manufacturing light emitting device

Growing community of inventors

Suwon-si, South Korea

Chul Soo Yoon