Patents by Inventor Young-keun Lee

Young-keun Lee 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).

  • Publication number: 20110104468
    Abstract: Disclosed is a microporous polyolefin multilayer film which can be used as a separator for a battery, and a preparing method thereof. The microporous polyolefin multilayer film is a trilayer microporous film which is prepared by a wetting method to have both surface layers containing polyethylene of 95 wt % or more having a melting temperature of 125° C. or more, and an intermediate layer containing polypropylene of 50 to 90 wt % having a melting temperature of 160° C. or more and polyethylene of 10 to 50 wt % having a melting temperature of 125° C. or more, wherein a thickness of the film is 9-50 ?m, a puncture strength is 0.15 N/?m or more, a permeability is 1.5×10?5 Darcy or more, a multiplication of the puncture strength and the permeability is 0.4×10?5 Darcy·N/?m or more, a contraction rate in a traverse direction at a temperature of 150° C. for 1 hour is 15% or less, and a melt fracture temperature of 160° C.
    Type: Application
    Filed: May 29, 2009
    Publication date: May 5, 2011
    Applicant: SK ENERGY CO., LTD.
    Inventors: Jang-Weon Rhee, In Hwa Jung, Gwig Won Kang, Young Keun Lee
  • Patent number: 7909480
    Abstract: A light source module includes a mounting substrate including at least two exposed metal lines, a light-emitting diode (LED) including two electrodes disposed corresponding to the at least two exposed metal lines, and an anisotropic conductive film (ACF) provided on the mounting substrate, the ACF electrically connecting the at least two exposed metal lines to the two electrodes, wherein the ACF comprises an insulation body, and a plurality of conductive particles dispersed in the insulation body and insulated from each other, and an insulation of the conductive particles disposed between the two exposed metal lines and the two electrodes of the LED is prevented in at least a first direction.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: March 22, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Eun-Jeong Kang, Seok-Won Kang, Young-Keun Lee, Ho-Sik Shin
  • Patent number: 7887727
    Abstract: The present invention relates to a process for manufacturing a microporous polyolefin film which can be used for various battery separators, separating filters and membranes for microfiltration. The process for manufacturing a microporous polyolefin film according to the invention comprises mixing/extrusion through efficient and separate injection of 15-55% by weight of polyolefin (Component I), and 85-45% by weight of a diluent (Component II) which forms thermodynamic single phase with the polyolefin and a diluent (Component III) which can undergo thermodynamic liquid-liquid phase separation with the polyolefin, into an extruder.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: February 15, 2011
    Assignee: SK Energy Co., Ltd.
    Inventors: Young-keun Lee, Jang-weon Rhee, Gwi-gwon Kang, In-hwa Jung
  • Publication number: 20110012521
    Abstract: In a display apparatus having a backlight unit, a light unit includes plural light source strings commonly connected to an output terminal of a boosting circuit to generate light in response to a light source driving voltage. The light source strings are grouped into plural light generating groups. Plural driving circuits are respectively connected to the light generating groups, and each driving circuit sequentially outputs feedback voltages from the light source strings of a corresponding light generating group. A minimum voltage detecting circuit compares the feedback voltages with each other from the driving circuits to detect a minimum voltage and outputs a control signal according to the detected minimum voltage. A voltage control circuit controls a voltage level of the light source driving voltage in response to the control signal. Accordingly, although the number of the driving circuits increases, power consumption used in each driving circuit may be reduced.
    Type: Application
    Filed: January 19, 2010
    Publication date: January 20, 2011
    Inventors: Sang-Chul BYUN, Byoung Dae Ye, Yong-Hoon Kwon, Byungchoon Yang, Young-keun Lee
  • Patent number: 7808580
    Abstract: In a backlight assembly, a reflector member includes a base sheet reflecting a light and a connecting line disposed on a face of the base sheet and, and transmitting signals. An input pad is disposed at a first end portion of the connecting line and receives the signals, and an output pad is disposed at a second end portion of the connecting line and outputs the signals transmitted through the connecting line.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: October 5, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Si-Joon Song, Eun-Chae Jeon, Gi-Cherl Kim, Byung-Choon Yang, Young-Keun Lee, Eun-Jeong Kang
  • Publication number: 20100246209
    Abstract: Provided is a display device for an embodiment in which a central axis of a light guide plate (LGP) and a central axis of one or more light sources are matched with each other to maximize efficiency of the light sources, and which has an ultra-slim structure. The display device may include: a display panel which displays an image; an LGP which guides light to the display panel; light sources which are disposed on a side of the LGP and provide light to the LGP; a circuit board which is disposed on a side of the display panel with the light sources mounted on a surface thereof, and driving chips which drive the display panel mounted on an opposite surface thereof; and a frame which houses the LGP and the light sources and on which the circuit board and the display panel are mounted.
    Type: Application
    Filed: October 26, 2009
    Publication date: September 30, 2010
    Inventors: Se-Ki PARK, Joo-Woan Cho, Sung-Kyu Shim, Young-Keun Lee
  • Patent number: D620910
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: August 3, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woo-Seung Han, Young-Keun Lee, Chang-Hwan Hwang
  • Patent number: D621378
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: August 10, 2010
    Assignee: Saumsung Electronics Co., Ltd.
    Inventors: Tae-Ho Kim, Young-Keun Lee
  • Patent number: D622687
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: August 31, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young Keun Lee, Jong Yun Jeoung
  • Patent number: D622688
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: August 31, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young Keun Lee, Jong Yun Jeoung
  • Patent number: D624039
    Type: Grant
    Filed: July 27, 2009
    Date of Patent: September 21, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seong-Won Cha, Young-Keun Lee, Chang-Hwan Hwang
  • Patent number: D624040
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: September 21, 2010
    Assignee: Samsung Electronics Co., ltd.
    Inventors: Tae-Ho Kim, Young-Keun Lee
  • Patent number: D625282
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: October 12, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Hoo Lee, Young-Keun Lee, Chang-Hwan Hwang
  • Patent number: D626525
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: November 2, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki Sung Kim, Young Keun Lee, Chang Hwan Hwang
  • Patent number: D629775
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: December 28, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Hoon Oh, Young-Keun Lee, Chang-Hwan Hwang
  • Patent number: D629776
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: December 28, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyung-Jin Lee, Nam-Mi Kim, Young-Keun Lee
  • Patent number: D630176
    Type: Grant
    Filed: July 16, 2009
    Date of Patent: January 4, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jun Kim, Young-Keun Lee, Chang-Hwan Hwang
  • Patent number: D630603
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: January 11, 2011
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Young Keun Lee, Jong Yun Jeoung
  • Patent number: D632663
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: February 15, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Hoon Oh, Young-Keun Lee, Chang-Hwan Hwang
  • Patent number: D637577
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: May 10, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woo-Seung Han, Young-Keun Lee