Patents Assigned to Force4 Corp.
  • Garnet-based phosphor doped with thorium and light emitting device using the same
    Patent number: 9493702
    Abstract: Provided is a garnet-based phosphor doped with thorium and a light emitting device using the same. In particular, a garnet-based phosphor having superior light characteristics and heat stability by using thorium as an activator, when compared to a conventional garnet phosphor using cerium as an activator, and a light emitting device using the same as a light source are provided.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: November 15, 2016
    Assignee: FORCE4 CORP.
    Inventors: Ho Shin Yoon, Seung Hyok Park, Jun Cho, Hye Min Boo, Sung Kyoung Jung
  • Phosphor and light emitting device
    Patent number: 9328286
    Abstract: A phosphor and a light emitting device containing the phosphor are provided. According to an embodiment, the phosphor is expressed in a chemical formula of LxMyCz1Nz2:Aa where L is at least one of an alkaline earth metal, a transition metal, Zn, Cd, Al, Ga, In, Ti, Ge, and Sn; M is at least one of B, Si, P, S, F, Cl, I, and Se; and A is at least one of an alkaline rare earth metal and the transition metal, and where 0<x?5, 0?y?5, 1?z1?10, 1?z2?10, and 0<a?1.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: May 3, 2016
    Assignees: LG INNOTEK CO., LTD., FORCE4 CORP.
    Inventors: Choong Youl Kim, Joong In An, Seung Hyok Park, Ho Shin Yoon, Chang Hee Lee
  • PHOSPHOR AND LIGHT EMITTING DEVICE
    Publication number: 20130313966
    Abstract: A phosphor and a light emitting device containing the phosphor are provided. According to an embodiment, the phosphor is expressed in a chemical formula of LxMyCz1Nz2:Aa where L is at least one of an alkaline earth metal, a transition metal, Zn, Cd, Al, Ga, In, Ti, Ge, and Sn; M is at least one of B, Si, P, S, F, Cl, I, and Se; and A is at least one of an alkaline rare earth metal and the transition metal, and where 0<x?5, 0?y?5, 1?z1?10, 1?z2?10, and 0<a?1.
    Type: Application
    Filed: July 31, 2013
    Publication date: November 28, 2013
    Applicants: FORCE4 CORP., LG INNOTEK CO., LTD.
    Inventors: Choong Youl KIM, Joong In AN, Seung Hyok PARK, Ho Shin YOON, Chang Hee LEE
  • Phosphor material, coating phosphor composition, and light emitting device
    Patent number: 8013517
    Abstract: Disclosed are a phosphor, a coating phosphor composition, a method for preparing the phosphor, and a light emitting device. A silicate-based phosphor is expressed in a chemical formula of (4-x-y-z)SrO.xBaO.zCaO.aMgO.2(SiO2).bM2O3:yEu, wherein M is at least one of Y, Ce, La, Nd, Gd, Tb, Yb or Lu, in which 0<x?3.95, 0<y?1, 0?z<3.95, x+y+z<4, 0<a<2, and 0<b<1.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: September 6, 2011
    Assignees: LG Innotek Co., Ltd., Force4 Corp.
    Inventors: Choong Youl Kim, Sung Min Kong, Hee Seok Choi, Seung Hyok Park, Ho Shin Yoon, Chang Hee Lee
  • PHOSPHOR MATERIAL, COATING PHOSPHOR COMPOSITION, METHOD OF PREPARING PHOSPHOR MATERIAL AND LIGHT EMITTING DEVICE
    Publication number: 20090206729
    Abstract: Disclosed are phosphor, coating phosphor composition, a method for preparing the phosphor, and a light emitting device. A silicate-based phosphor is expressed in a chemical formula of (4-x-y-z)SrO.xBaO.zCaO.aMgO.2(SiO2).bM2O3: yEU, wherein M is at least one of Y, Ce, La, Nd, Gd, Tb, Yb or Lu, in which 0<x=3.95, 0<y=1, 0=z<3.95, x+y+z<4, 0<a<2, and 0<b<1.
    Type: Application
    Filed: December 27, 2007
    Publication date: August 20, 2009
    Applicants: LG INNOTEK CO., LTD, FORCE4 CORP.
    Inventors: Choong Youl Kim, Sung Min Kong, Hee Seok Choi, Seung Hyok Park, Ho Shin Yoon, Chang Hee Lee