Samsung Electro-Mechanics Co., Ltd.

Samsung Electronics Co., Ltd.

Samsung Led Co., Ltd.

Young-sic Kim

Seoung-jae Im

Shunichi Kubota

Tae-gon Kim

Jae-ho Lee

Kubota Shunichi

A phosphor represented by Formula 1:(AEuLn)(BMn)AlSiO&#x2003;&#x2003;Formula 1wherein A includes at least one element selected from the group consisting of Ca, Sr and Ba, Ln includes at least one metal selected from the group consisting of a trivalent rare earth metal, B includes at least one element selected from the group consisting of Mg, Zn, Ge and Co, a is greater than 0 and equal to or less than about 0.5, b is greater than 0 and equal to or less than about 0.25, c is greater than 0 and less than about 0.8, and x is 0 to about 0.2. Also a white light emitting device including the phosphor.

Phosphors and white light emitting devices including same

A halosilicate phosphor represented by Formula 1p(CaM)O.qMO.rMA:sM

Halosilicate phosphor and white light emitting device including the same

Disclosed is a silicate phosphor represented by Formula: LiASrBEuCSiDOEwhere A includes at least one ion selected from the group consisting of Na, K, Rb, and Cs. B includes at least one ion selected from the group consisting of Mg, Ca, Ba and Zn. C includes at least one ion selected from the group consisting of Sc, Y, La, Gd, Ce, Pr, Nd, Sm, Tb, Dy, Ho, Er, Tm, Yb, Lu and Bi. D includes at least one ion selected from the group consisting of B, Al, Ga, In and Tl. E includes at least one ion selected from the group consisting of F, Cl, Br, and I. Further disclosed is a white light emitting device including the silicate phosphor.

Silicate phosphor and white light emitting device including the same

Provided are an alkaline earth metal silicate-based phosphor which is a compound represented by Formula 1 below, and a white light-emitting device (LED) including the same:(M1AB)MgM2OZ&#x2003;&#x2003;Formula 1

Phosphor for white light-emitting device and white light-emitting device including the same

Provided are an alkaline earth metal silicate-based phosphor which is a compound represented by Formula 1 below, and a white light-emitting device (LED) including the same.(M1AB)MgM2OZ&#x2003;&#x2003;Formula 1 The alkaline earth metal silicate-based phosphor has a broad excitation wavelength range, and thus, both a UV-LED and a blue LED can be used as excitation sources for white LEDs. Furthermore, the total emission area of an emission spectrum of the alkaline earth metal silicate-based phosphor is greater than that of a common phosphor, thereby achieving better emission efficiency.

Growing community of inventors

Yongin-si, South Korea

Young-sic Kim