Patents by Inventor Sun Yeol CHOI

Sun Yeol CHOI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10150912
    Abstract: There is provided a red phosphor that may include a nitride represented by a formula of (Sr1-x-yBaxEuy)2Si5N8, wherein 0<x<0.7, and 0<y<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.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: December 11, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung Woo Choi, Sung Hak Jo, Sun Yeol Choi, Jung Eun Yoon, Chul Soo Yoon, Tae Young Choi
  • Publication number: 20160177178
    Abstract: There is provided a red phosphor that may include a nitride represented by a formula of (Sr1?x?yBaxEuy)2Si5N8, wherein 0<x<0.7, and 0<y<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.
    Type: Application
    Filed: December 9, 2015
    Publication date: June 23, 2016
    Inventors: Sung Woo CHOI, Sung Hak JO, Sun Yeol CHOI, Jung Eun YOON, Chul Soo YOON, Tae Young CHOI
  • Publication number: 20130223068
    Abstract: There is provided a light emitting module including: a circuit board having a recess formed in one surface thereof; one or more light emitting elements disposed on the circuit board; and a connector coupled to the recess and electrically connected to the light emitting elements by a wiring pattern formed in the circuit board. Since a surface mounting technology (SMT) is not used in forming the connector of the light emitting module, process convenience can be enhanced. In addition, the light emitting module having a connecting structure standardized for various types of module can be provided.
    Type: Application
    Filed: November 9, 2011
    Publication date: August 29, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Sun Yeol Choi
  • Publication number: 20130020931
    Abstract: A white light emitting device includes a blue light emitting diode (LED) emitting blue light, a yellow phosphor excited by the blue light to emit yellow light, and selected from the group consisting of Y3Al5O12 and Lu3Al5O12, and a red phosphor and a green phosphor excited by the blue light to emit red light and green light, wherein white light obtained from a mixture of the blue light and excited light corresponds to a region defined by coordinate points of (0.28, 0.28), (0.24, 0.20), (0.26, 0.19), and (0.30, 0.27) in a CIE 1931 color coordinate system.
    Type: Application
    Filed: July 18, 2012
    Publication date: January 24, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kun Yoo KO, Dong Hoon LEE, Kyu Ho JANG, Sun Yeol CHOI, Young Taek KIM