Patents by Inventor Weon Cho

Weon Cho 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).

  • Light emitting device driving module
    Patent number: 9307595
    Abstract: A light emitting device driving module may be provided that includes: a light emitter including a first light emitter and a second light emitter connected to the first light emitter; a rectifier which receives an AC power and outputs a rectified voltage; and a controller which receives the rectified voltage from the rectifier and controls on/offs of the first light emitter and the second light emitter in accordance with a magnitude of the rectified voltage. The light emitting device driving module according to the embodiment controls the on/offs of two or more kinds of the light emitting devices by using the AC power, and thus, drives the light emitting device in such a manner as to have a high color rendering index.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: April 5, 2016
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Weon Cho, Young Kuk Kwak, Yu Jin Hwang
  • LIGHT EMITTING DEVICE DRIVING MODULE
    Publication number: 20150245437
    Abstract: A light emitting device driving module may be provided that includes: a light emitter including a first light emitter and a second light emitter connected to the first light emitter; a rectifier which receives an AC power and outputs a rectified voltage; and a controller which receives the rectified voltage from the rectifier and controls on/offs of the first light emitter and the second light emitter in accordance with a magnitude of the rectified voltage. The light emitting device driving module according to the embodiment controls the on/offs of two or more kinds of the light emitting devices by using the AC power, and thus, drives the light emitting device in such a manner as to have a high color rendering index.
    Type: Application
    Filed: February 24, 2015
    Publication date: August 27, 2015
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Weon CHO, Young Kuk KWAK, Yu Jin HWANG
  • Backlight unit and display apparatus having the same
    Patent number: 8690372
    Abstract: An exemplary embodiment of the present invention discloses a backlight unit having a plurality of light-emitting blocks and a light source driving section. The plurality of light-emitting blocks is arranged in a matrix shape along first and second directions different from each other. Each of the light-emitting blocks includes a light source unit having at least one light-emitting chip to emit light, and a light guiding unit to guide the light. The light source driving section controls the light source unit of the light-emitting blocks to drive the light source unit.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: April 8, 2014
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Tae-Jin Chung, Seung-Ryeol Ryu, Weon Cho, Bi-Yong Jeong, Byeong-Gil An, Chong-Young Park, Jang-Hoon Lee
  • Backlight unit and display apparatus having the same
    Patent number: 8360592
    Abstract: An exemplary embodiment of the present invention discloses a backlight unit with a plurality of light-emitting blocks and a light source driving section. The plurality of light-emitting blocks are arranged in a matrix shape along first and second directions different from each other. Each of the light-emitting blocks includes a light source unit having at least one light-emitting chip to emit light, and a light guiding unit to guide the light. The light source driving section controls the light source unit of the light-emitting blocks to drive the light source unit. Therefore, a thickness of the backlight unit may be reduced.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: January 29, 2013
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Tae-Jin Chung, Seung-Ryeol Ryu, Weon Cho, Bi-Yong Jeong, Byeong-Gil An, Chong-Young Park, Jang-Hoon Lee
  • BACKLIGHT UNIT AND DISPLAY APPARATUS HAVING THE SAME
    Publication number: 20100079703
    Abstract: An exemplary embodiment of the present invention discloses a backlight unit with a plurality of light-emitting blocks and a light source driving section. The plurality of light-emitting blocks are arranged in a matrix shape along first and second directions different from each other. Each of the light-emitting blocks includes a light source unit having at least one light-emitting chip to emit light, and a light guiding unit to guide the light. The light source driving section controls the light source unit of the light-emitting blocks to drive the light source unit. Therefore, a thickness of the backlight unit may be reduced.
    Type: Application
    Filed: September 29, 2009
    Publication date: April 1, 2010
    Applicant: SEOUL SEMICONDUCTOR CO., LTD.
    Inventors: Tae-Jin CHUNG, Seung-Ryeol Ryu, Weon Cho, Bi-Yong Jeong, Byeong-Gil An, Chong-Young Park, Jang-Hoon Lee