Patents by Inventor Sang-Chul Byun

Sang-Chul Byun 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: 20170171962
    Abstract: A display device includes a light source unit, a light guide plate including a light incident surface, an opposite surface, a light exit surface, and a light exit rear surface, a display panel provided on the light exit surface, a bottom chassis for housing the light guide plate, and an anti-static electricity member including a fluoride resin and contacting the bottom chassis, where the bottom chassis includes a bottom section and a sidewall section perpendicularly connected from the bottom section, and the sidewall section includes a first sidewall section more adjacent close to the light incident surface than the opposite surface, a second sidewall section, a third sidewall section, and the fourth sidewall section, and the anti-static electricity member is provided between the first sidewall section and the light source unit and contacting at least a portion of the first sidewall section.
    Type: Application
    Filed: June 28, 2016
    Publication date: June 15, 2017
    Inventors: Sang-chul BYUN, Hyuk-hwan KIM, Seokhyun NAM
  • Publication number: 20170168230
    Abstract: A display device includes a backlight unit including a light guide plate including a light incident surface, an opposite surface facing the light incident surface, a light exit surface connecting the light incident surface and the opposite surface, and a light exit rear surface facing the light exit surface, a light source unit including a light source facing the light incident surface and a flexible printed circuit board disposed on a surface of the light source, a first coupling member disposed on a portion of the light exit rear surface, and a second coupling member disposed on a portion of the flexible printed circuit board, and a display panel disposed above the backlight unit where the first coupling member and the second coupling member are coupled to each other by a magnetic force.
    Type: Application
    Filed: September 19, 2016
    Publication date: June 15, 2017
    Inventors: Sang-chul BYUN, Hyuk-hwan KIM, Seokhyun NAM
  • Patent number: 9650567
    Abstract: A wavelength converter and a liquid crystal display having the same, the wavelength converter including a first pattern that converts a wavelength of light into red light, and a second pattern that converts a wavelength of light into green light. The first pattern and the second pattern are alternately disposed, and an optical path length La of each of the first pattern and the second pattern is given by Equation (1): La=(?a/2)×m, wherein La is an optical length of an a-th pattern, ?a is a wavelength of light converted by the a-th pattern, a is one or two, and m is a natural number.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: May 16, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Hwa Song, Dong Hoon Kim, Sang Chul Byun, Sang Hoon Lee, Seung Hwan Chung, Han Moe Cha
  • Publication number: 20160109635
    Abstract: A backlight unit including a light guide plate (LGP), a light source module disposed adjacent to an incident surface of the LGP and configured to irradiate light to the incident surface, and a light control member disposed between the light source module and the incident surface, in which the light control member includes a reflection preventing layer disposed adjacent to the light source module and configured to prevent reflection of light, a base substrate disposed on the reflection preventing layer and configured to scatter or diffuse light transmitted through the reflection preventing layer, and a light adjusting filter disposed on the base substrate and configured to filter light including a first wavelength among light provided by the light source module.
    Type: Application
    Filed: March 26, 2015
    Publication date: April 21, 2016
    Inventors: Sang Hyuk LEE, Jung Kyun KIM, Sang Chul BYUN, Young Hye SON
  • Patent number: 9316776
    Abstract: A light source assembly includes a base substrate, a resin layer disposed on the base substrate, and exposing a portion of the base substrate, and a first light source disposed on the portion of the base substrate which is exposed by the resin layer. The first light source has a hexahedron shape. The first light source has a face in parallel with the base substrate and having a height smaller than length or width of the face.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: April 19, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seok-Won Kang, Sang-Chul Byun, Dong-Yeon Kang, Seok-Hyun Nam, Sang-Hyuk Lee, Hyoung-Joo Kim, Ji-Eun Nam, Ju-Young Yoon
  • Publication number: 20160092030
    Abstract: A display device may include a display panel, at least one light source disposed on one side of the display panel, a circuit board to drive the light source, a light guide plate in which light emitted from the light source is incident into a surface and is emitted to another surface, and a lower frame to support the display panel and to accommodate the light source and the light guide plate. The lower frame may include a base substrate, a digitizer disposed on the base substrate, and a dummy digitizer pattern disposed on the base substrate and spaced apart from the digitizer. The circuit board may be disposed between the digitizer and the dummy digitizer pattern, and the lower frame may be bent and extend around the light source.
    Type: Application
    Filed: June 11, 2015
    Publication date: March 31, 2016
    Inventors: Sang Chul BYUN, Seok Hyun NAM, Se Ki PARK, Young Hye SON, Sang Hyuk LEE
  • Patent number: 9278491
    Abstract: A light emitting unit may include a housing having a bottom portion parallel to an xz plane and an opened top opposite to the bottom portion, a light emitting chip on the bottom portion and generating light, and a lens which overlaps the opened top of the housing. The lens may have a convex structure with respect to the xz plane when viewed from a cross section parallel to an xy plane and a concave structure with respect to the xz plane when viewed from a cross section parallel to a yz plane.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: March 8, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young-keun Lee, Chan-Jae Park, Sang-Chul Byun, Myeong-Ju Shin, Suchang Ryu
  • Publication number: 20150176804
    Abstract: A wavelength converter and a liquid crystal display having the same, the wavelength converter including a first pattern that converts a wavelength of light into red light, and a second pattern that converts a wavelength of light into green light. The first pattern and the second pattern are alternately disposed, and an optical path length La of each of the first pattern and the second pattern is given by Equation (1): La=(?a/2)×m, wherein La is an optical length of an a-th pattern, ?a is a wavelength of light converted by the a-th pattern, a is one or two, and m is a natural number.
    Type: Application
    Filed: April 4, 2014
    Publication date: June 25, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Hyun Hwa SONG, Dong Hoon KIM, Sang Chul BYUN, Sang Hoon LEE, Seung Hwan CHUNG, Han Moe CHA
  • Patent number: 9052542
    Abstract: A light source package includes a first light source configured to emit first light, an imaginary central axis of the first light extending in a first direction. The light source package may further include a second light source configured to emit second light, an imaginary central axis of the second light extending in a second direction that is different from the first direction. The light source package may further include a first optical part including a first surface that is configured to reflect at least a first portion of the first light. The light source package may further include a second optical part configured to spread the second light. The light source package may advantageously enable illuminating a desirably large display area with a minimum number of light sources and/or optical parts.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: June 9, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young-Keun Lee, Yong Kyu Kang, Joong Hyun Kim, Sang-Chul Byun, Ju Youn Son
  • Patent number: 8928701
    Abstract: A backlight driving circuit for a display apparatus includes a receiver, a signal modulation detector and a driver. The receiver receives a clock signal and a brightness data signal by a serial transmission and in response to an enable signal. The brightness data signal is synchronized with the clock signal and includes brightness information. The signal modulation detector detects a modulation of the brightness data signal, based on at least one of the clock signal and the enable signal, and outputs a control signal based on a detected result thereof. The driver receives the brightness data signal, in synchronization with the clock signal, selects one of the brightness data signal and a predetermined reference brightness data signal in response to the control signal, generates a driving voltage using the selected brightness data signal, and provides the driving voltage to the backlight unit to control the brightness of the backlight unit.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: January 6, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyuk-Hwan Kim, Seki Park, Byoung Dae Ye, Dongmin Yeo, Sang-Chul Byun
  • Publication number: 20150003107
    Abstract: A light source assembly includes a base substrate, a resin layer disposed on the base substrate, and exposing a portion of the base substrate, and a first light source disposed on the portion of the base substrate which is exposed by the resin layer. The first light source has a hexahedron shape. The first light source has a face in parallel with the base substrate and having a height smaller than length or width of the face.
    Type: Application
    Filed: October 29, 2013
    Publication date: January 1, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Seok-Won KANG, Sang-Chul BYUN, Dong-Yeon KANG, Seok-Hyun NAM, Sang-Hyuk LEE, Hyoung-Joo KIM, Ji-Eun NAM, Ju-Young YOON
  • 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: 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
  • Publication number: 20130215600
    Abstract: A light source package includes a first light source configured to emit first light, an imaginary central axis of the first light extending in a first direction. The light source package may further include a second light source configured to emit second light, an imaginary central axis of the second light extending in a second direction that is different from the first direction. The light source package may further include a first optical part including a first surface that is configured to reflect at least a first portion of the first light. The light source package may further include a second optical part configured to spread the second light. The light source package may advantageously enable illuminating a desirably large display area with a minimum number of light sources and/or optical parts.
    Type: Application
    Filed: August 9, 2012
    Publication date: August 22, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young-Keun LEE, Yong Kyu KANG, Joong Hyun KIM, Sang-Chul BYUN, Ju Youn SON
  • Publication number: 20130077348
    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: Application
    Filed: June 15, 2012
    Publication date: March 28, 2013
    Applicant: 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: 8400073
    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: Grant
    Filed: January 19, 2010
    Date of Patent: March 19, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Chul Byun, Byoung Dae Ye, Yong-Hoon Kwon, Byungchoon Yang, Young-keun Lee
  • Patent number: 8395325
    Abstract: A method of driving a light source, a light source apparatus for performing the method, and a display apparatus having the light source apparatus are disclosed in accordance with one or more embodiments. In the method, a plurality of light source strings connected in parallel is driven by applying a driving voltage to a first terminal of the light source strings. A peak current due to a voltage deviation of each of the light source strings is switch-controlled to uniform an average current of the light source strings. Thus, a peak current flowing through light source strings in accordance with a voltage deviation of the light source strings is switch-controlled, so that an average current of the light source strings may be uniformly maintained. Therefore, a voltage deviation is not consumed as power, so that damage to circuit elements due to heat may be prevented.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: March 12, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byoung-Dae Ye, Gi-Cherl Kim, Byung-Choon Yang, Se-Ki Park, Sang-Chul Byun
  • Publication number: 20130039093
    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: Application
    Filed: June 11, 2012
    Publication date: February 14, 2013
    Inventors: MIN-YOUNG SONG, Jae-Joong Kwon, Seui-Gi Kim, Hyun-Chui Bae, Si-Joon Song, Sang-Chul Byun, Dong-Hyeon Lee
  • Publication number: 20130033892
    Abstract: A light emitting unit may include a housing having a bottom portion parallel to an xz plane and an opened top opposite to the bottom portion, a light emitting chip on the bottom portion and generating light, and a lens which overlaps the opened top of the housing. The lens may have a convex structure with respect to the xz plane when viewed from a cross section parallel to an xy plane and a concave structure with respect to the xz plane when viewed from a cross section parallel to a yz plane.
    Type: Application
    Filed: January 17, 2012
    Publication date: February 7, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young-keun LEE, Chan-Jae PARK, Sang-Chul BYUN, Myeong-Ju SHIN, Suchang RYU