Patents by Inventor Si-Joon Song

Si-Joon Song 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: 9612474
    Abstract: Provided are a backlight assembly and a display device including the same. The backlight assembly comprises: a housing; a plurality of light sources disposed on the housing; a plurality of optical lenses disposed on the light sources, respectively; a main reflective sheet covering an upper surface of the housing and comprising a reflective portion and a main opening which exposes each of the optical lenses; and a sub reflective sheet disposed under each of the optical lenses, wherein the sub reflective sheet comprises a body portion and a fitting portion partially separated from the body portion and is fitted to the main reflective sheet in the reflective portion.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: April 4, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventor: Si Joon Song
  • Patent number: 9520386
    Abstract: A method of protecting an LED chip from damage by ESD and EMI when the LED chip is housed in a light-emitting diode(s) housing package (LED package) and the LED package is mounted on a printed circuit board is provided. The method comprises a step of not including an ESD and EMI suppressing Zener diode within the combination of the printed circuit board and the LED package and of providing within the combination of the printed circuit board and the LED package a first conductive member and a spaced apart second conductive member which are electrically connected to the LED chip and which have defined between them at least one insulative ESD and/or EMI suppressing region which breaks down in its insulative properties when subjected to voltages of absolute magnitudes greater than a predetermined threshold voltage.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: December 13, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Si Joon Song, Hyuk Hwan Kim, Seok Hyun Nam, Byoung Dae Ye, Young Keun Lee
  • Patent number: 9268084
    Abstract: A backlight assembly includes a light emitting part, a light guide plate and a lower receiving container. The light guide plate includes a side surface and a light exiting surface. The lower receiving container includes a heat sinking part and a rigid part having a strength greater than the heat sinking part.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: February 23, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun-Chul Bae, Dong-Hyeon Lee, Seong-Sik Choi, Si-Joon Song
  • Publication number: 20150261040
    Abstract: A manufacturing method of a backlight unit includes providing a solder paste on a printed circuit board and forming a solder part in a first area of the printed circuit board, aligning a bank mask on the printed circuit board to align a first opening defined through the bank mask with a second area of the printed circuit board not overlapped with the first area, providing a bank material in the first opening and forming a bank on the printed circuit board in an area corresponding to the second area, separating the bank mask from the printed circuit board including the bank thereon, and connecting the solder part of the printed circuit board and a light emitting unit to each other.
    Type: Application
    Filed: January 19, 2015
    Publication date: September 17, 2015
    Inventors: Hyun-Jeong KIM, HYUK-HWAN KIM, SEOKHYUN NAM, Si joon SONG
  • Publication number: 20150219966
    Abstract: A light source module includes a printed circuit board including a wiring layer, an insulating coating layer disposed on the wiring layer, and a reflection adjustment pattern disposed on the insulating coating layer and having reflection characteristics which are different from reflection characteristics of the insulating coating layer, a light emitting chip mounted on the printed circuit board, and an optical lens arranged on an upper portion of the light emitting chip and fixed to the printed circuit board.
    Type: Application
    Filed: May 21, 2014
    Publication date: August 6, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Si Joon SONG, Hyuk Hwan KIM, Hyun Jeong KIM, Seok Hyun NAM, Young Keun LEE
  • Publication number: 20150211715
    Abstract: Provided are a backlight assembly and a display device including the same. The backlight assembly comprises: a housing; a plurality of light sources disposed on the housing; a plurality of optical lenses disposed on the light sources, respectively; a main reflective sheet covering an upper surface of the housing and comprising a reflective portion and a main opening which exposes each of the optical lenses; and a sub reflective sheet disposed under each of the optical lenses, wherein the sub reflective sheet comprises a body portion and a fitting portion partially separated from the body portion and is fitted to the main reflective sheet in the reflective portion.
    Type: Application
    Filed: May 8, 2014
    Publication date: July 30, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventor: Si Joon SONG
  • Publication number: 20150138827
    Abstract: A method of protecting an LED chip from damage by ESD and EMI when the LED chip is housed in a light-emitting diode(s) housing package (LED package) and the LED package is mounted on a printed circuit board is provided. The method comprises a step of not including an ESD and EMI suppressing Zener diode within the combination of the printed circuit board and the LED package and of providing within the combination of the printed circuit board and the LED package a first conductive member and a spaced apart second conductive member which are electrically connected to the LED chip and which have defined between them at least one insulative ESD and/or EMI suppressing region which breaks down in its insulative properties when subjected to voltages of absolute magnitudes greater than a predetermined threshold voltage.
    Type: Application
    Filed: April 25, 2014
    Publication date: May 21, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Si Joon SONG, Hyuk Hwan KIM, Seok Hyun NAM, Byoung Dae YE, Young Keun LEE
  • Patent number: 8976104
    Abstract: A display device comprises a optical member, a plurality of light sources to illuminate the optical member, a representative determining part to determine representative values of image blocks based on image signals applied to the image blocks, wherein the image blocks are arranged in a matrix and correspond to portions of a display panel, a representative integration part to integrate the representative values of the image blocks in one of a row and a column direction of the matrix and determine integrated representative values, and a light control part to control the plurality of light sources based on the integrated representative values.
    Type: Grant
    Filed: May 3, 2010
    Date of Patent: March 10, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young-Jun Seo, Byung-Choon Yang, Si-Joon Song, Dong-Min Yeo
  • Patent number: 8888354
    Abstract: A backlight assembly includes a light guide plate having at least five sides. There is a first side. A second side is parallel to and equal in length to the first side. A third side is perpendicular to the first and second sides. A fourth side is parallel to and shorter in length than the third side. There is at least one oblique side connecting the fourth side to the first or second side. The backlight assembly additionally includes a light source unit disposed the fourth side and the oblique side of the light guide plate.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: November 18, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min-Young Song, Jae-Joong Kwon, Seul-Gi Kim, Hyun-Chul Bae, Si-Joon Song, Sang-Chul Byun, Dong-Hyeon Lee
  • Patent number: 8882330
    Abstract: A light module for a backlight assembly that prevents metal wiring from being damaged at a bent portion and a backlight assembly including the same are presented. The light module for the backlight assembly includes: a printed circuit board (PCB) including a first portion and a second portion connected by a connection having a bend; a first light source formed on the first portion of the printed circuit board (PCB); a second light source formed on the second portion of the printed circuit board (PCB); a first wiring connecting member connected to the first light source and formed on the first portion; and a second wiring connecting member connected to the second light source and formed on the second portion, wherein the first wiring connecting member and the second wiring connecting member are connected to each other.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: November 11, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Chul Byun, Seok Hyun Nam, Si Joon Song, Yong Suk Chi, Min-Young Song, Young-Keun Lee, Hyuk-Hwan Kim, Dong Hyeon Lee
  • Patent number: 8830158
    Abstract: In a method of local dimming a light source, which includes driving a light source including a plurality of light-emitting blocks by individually driving the light-emitting blocks, the dimming level of each light-emitting block is determined. In the method, the luminance of a first light-emitting area may be adjusted according to a size of the first light-emitting area corresponding to a display area in which an image having a maximum luminance is displayed.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: September 9, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se-Ki Park, Gi-Cherl Kim, Dong-Min Yeo, Hoi-Sik Moon, Si-Joon Song, Ho-Sik Shin
  • Patent number: 8801256
    Abstract: Disclosed are a light emitting diode package and a backlight unit having the same. The light emitting diode package includes a light emitting diode including generating a light in response to a driving voltage applied from the outside, first and second main leads connected to first and second electrodes, respectively, and a body section provided therein with the light emitting diode and fixes the first and second main leads thereto. The light emitting diode package includes a first sub-lead having one end portion connected to the first main lead, and a second sub-lead having one end portion connected to the second main lead and an opposite end portion spaced apart from an opposite end portion of the first sub-lead at a predetermined distance while facing the opposite end portion of the first sub-lead. The backlight unit includes a plurality of the light emitting diode packages.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: August 12, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyuk-Hwan Kim, Seokhyun Nam, Si joon Song, Yong Suk Cho, Sang-Chul Byun
  • Patent number: 8730148
    Abstract: A method of driving a light source of a light source module including a red light source, a green light source and a blue light source, includes sensing a luminous intensity of the environment; and adjusting a wavelength of light generated from the light source module according to the luminous intensity of the environment.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: May 20, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young-Min Park, Gi-Cherl Kim, Se-Ki Park, Si-Joon Song, Young-Keun Lee, Yong-Hoon Kwon
  • Patent number: 8702294
    Abstract: Provided are a light source unit including a plurality of light-emitting diode (LED) packages, which are directly electrically connected to each other, and a backlight assembly having the light source unit. The light source unit includes a first LED package and a second LED package which are adjacent to each other, wherein each of the first LED package and the second LED package includes an LED chip, a lead frame which supplies current to the LED chip, and a housing which fixes the LED chip and the lead frame in place, wherein an end of the lead frame of the first LED package directly contacts an end of the lead frame of the second LED package.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: April 22, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young-Keun Lee, Si-Joon Song, Eui-Jeong Kang, Hyun-Cheol Moon, Seung-Hwan Baek
  • Patent number: 8692759
    Abstract: A light source apparatus includes light-emitting blocks, a local dimming control part and a light source driving part driving. The light-emitting blocks include a first-color light source which emits first-color light and a second-color light source which emits second-color light. The second-color light source includes a third-color chip and a fourth-color phosphor disposed on the third-color chip, and is disposed as one package to emit the second-color light therefrom. The local dimming control part compensates a driving current of the first-color light source and a driving current of the second-color light source of each of the light-emitting blocks. The light source driving part drives the first-color light source and the second-color light sources based on the driving current of the first-color light source and the a driving current of the second-color light source, respectively, each compensated by the local dimming control part.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: April 8, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se-Ki Park, Dong-Min Yeo, Gi-Cherl Kim, Si-Joon Song, Chi-O Cho, Young-Keun Lee
  • Patent number: 8687146
    Abstract: The invention provides a reflective plate that includes a first reflective part having a predetermined surface roughness and a second reflective part having a surface roughness that is less than the predetermined surface roughness of the first reflective part. The invention also provides a reflective plate that is capable of supplying a liquid crystal panel with substantially uniform light.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: April 1, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Si-joon Song, Eun-jeong Kang, Jin-soo Kim, Jung-wook Paek, Sang-hoon Lee
  • Publication number: 20140043855
    Abstract: A backlight assembly includes a receiving container, a light emitting unit and a light guide plate. The receiving container includes a bottom portion, and a sidewall extended from the bottom portion. The light emitting unit is on an inner lateral surface of the sidewall. The light guide plate is in the receiving container and includes a side surface facing the light emitting unit. The light emitting unit includes a light emitting diode package which generates light, a first lead frame and a second lead frame. The first lead frame is electrically connected to a first electrode of the light emitting diode package. The second lead frame is spaced apart from the first lead frame and electrically connected to a second electrode of the light emitting diode package.
    Type: Application
    Filed: January 9, 2013
    Publication date: February 13, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Eui Jeong KANG, Yu-Dong KIM, HYUK-HWAN KIM, SEKI PARK, Si Joon SONG
  • Patent number: 8629831
    Abstract: A light source module of a display device comprises light-emitting blocks each of which comprises multiple sets of light sources, with different sets emitting different colors (e.g. red, green and blue). Each set is independently controllable according to one or more driving parameters.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: January 14, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Il Park, Yong-Hoon Kwon, Se-Ki Park, Gi-Cherl Kim, Si-Joon Song
  • Patent number: 8502934
    Abstract: A light source unit includes a substrate, a plurality of light emitting elements mounted on the substrate, a first inner wiring portion formed on the substrate and connected to the plurality of light emitting elements, and a second inner wiring portion formed on the substrate insulated from the first inner wiring portion. Two such light source units may be included in a backlight unit having a plurality of light emitting elements. A receiving member accommodates the first light source unit and the second light source unit, and a length of wires arranged along inside edges of the receiving member is reduced.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: August 6, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young-Keun Lee, Si-Joon Song, Gi-Gherl Kim
  • Patent number: 8482510
    Abstract: A light source apparatus includes a light source module, a local dimming control part and a light source driving part. The light source module includes a plurality of light-emitting blocks. Each of the light-emitting blocks includes a first color light source, a second color light source and a third color light source, respectively. The local dimming control part drives the light-emitting blocks by blocks. The local dimming control part sets a reference duty signal for first, second and third color driving signals in accordance with a driving mode of the light source module. The light source driving part generates the first color driving signal, the second color driving signal and the third color driving signal by using the reference duty ratio set in accordance with the driving mode and a driving current having a same peak current level in accordance with the driving mode.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: July 9, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Moon-Hwan Chang, Yong-Hoon Kwon, Gi-Cherl Kim, Si-Joon Song, Sang-Il Park, Byoung-Dae Ye