Samsung Electronics Co., Ltd.

Samsung Led Co., Ltd.

Jeong Ho Ryu

Chul Soo Yoon

Sang Hyun Kim

Hyong Sik Won

Do Hwan Kim

Youn Gon Park

Hideo Suzuki

Sik Won Hyong

Provided is a red phosphor having superior thermal and chemical stability and excellent luminous efficiency, wherein the red phosphor comprises a compound expressed in the composition formula: A(Sr, M)(Si, Al)ON:R(0&#x3c;x&#x3c;3, y=2x/3, 0.001&#x3c;z&#x3c;0.1), where A is at least one element selected from a group consisting of lithium (Li), potassium (K) and sodium (Na), M is at least one element selected from a group consisting of barium (Ba), magnesium (Mg), and calcium (Ca), and R is at least one element selected from a group consisting of lanthanide and a transition metal element.

Red phosphor, method for preparing same, and light-emitting device comprising same

A complex crystal phosphor is an inorganic composition containing at least an M element, an Al element, silicon, oxygen, and nitrogen. The inorganic composition has particles having at least two types of crystal phase, and the at least two types of crystal phase include a first crystal phase which is the same as a MSiOcrystal and a second crystal phase as a &#x3b2;-sialon crystal. Here, M is at least one element selected from the group consisting of (Mg), calcium (Ca), strontium (Sr), and barium (Ba).

Complex crystal phosphor, light emitting device, surface light source apparatus, display apparatus, and lighting device

Disclosed are a phosphor, a method for preparing and using the same, a light emitting device package, a surface light source apparatus, a lighting apparatus using the phosphor, and a display apparatus. The phosphor includes an inorganic compound represented by an empirical formula (Sr, M)SiONy:Eu, where M is a metallic element, 0&#x3c;x&#x3c;4, and y=2x/3.

Phosphor, method for preparing and using the same, light emitting device package, surface light source apparatus and lighting apparatus using red phosphor

There is provided a method for preparing a &#x3b2;-SiAlON phosphor capable of be controlled to show characteristics such as high brightness and desired particle size distribution. The method for preparing a &#x3b2;-SiAlON phosphor represented by Formula: SiAlON:Ln(wherein, Ln is a rare earth element, and the following requirements are satisfied: 0&#x3c;x&#x2266;4.2, 0&#x3c;y&#x2266;4.2, and 0&#x3c;z&#x2266;1.0) includes: mixing starting materials to prepare a raw material mixture; and heating the raw material mixture in a nitrogen-containing atmospheric gas, wherein the starting materials includes a host raw material including a silicon raw material including metallic silicon, and at least one aluminum raw material selected from the group consisting of metallic aluminum and aluminum compound, and at least activator raw material selected from the rare earth elements for activating the host raw material.

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Gyunggi-do, South Korea

Jeong Ho Ryu