Patents by Inventor Jheen-Hyeok Park

Jheen-Hyeok Park 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: 8659531
    Abstract: A driving circuit according to an embodiment of the present invention includes an input terminal, unit circuits connected to the input terminal, and output terminals electrically connected to the input terminals. Each of the unit circuits is enabled in response to a control signal inputted via the input terminal.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: February 25, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jheen-Hyeok Park, Sun-Kyu Son
  • Patent number: 8058813
    Abstract: A backlight unit of a liquid crystal display includes a lamp, a balancing pattern capacitor electrically connected to the lamp for current balance, a transformer electrically connected to the lamp via the balancing pattern capacitor, a sensing pattern capacitor electrically connected to a terminal of the balancing pattern capacitor connected to the lamp to detect an abnormal driving state of the lamp, and a feedback circuit unit electrically connected to the sensing pattern capacitor to control the abnormal driving state of the lamp. A liquid crystal display device including the backlight unit is also disclosed.
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: November 15, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Won Jang, Jheen-Hyeok Park, Moon-Shik Kang
  • Publication number: 20100207935
    Abstract: A driving circuit according to an embodiment of the present invention includes an input terminal, unit circuits connected to the input terminal, and output terminals electrically connected to the input terminals. Each of the unit circuits is enabled in response to a control signal inputted via the input terminal.
    Type: Application
    Filed: April 28, 2010
    Publication date: August 19, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jheen-Hyeok PARK, Sun-Kyu SON
  • Patent number: 7710382
    Abstract: A driving circuit according to an embodiment of the present invention includes an input terminal, unit circuits connected to the input terminal, and output terminals electrically connected to the input terminals. Each of the unit circuits is enabled in response to a control signal inputted via the input terminal.
    Type: Grant
    Filed: March 17, 2005
    Date of Patent: May 4, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jheen-Hyeok Park, Sun-Kyu Son
  • Patent number: 7679827
    Abstract: An integral optical plate includes a convex lens plate, a microlens sheet and an adhesion element. The convex lens plate includes a first light incident surface into which light is incident and a first light-exiting surface disposed opposite the first light incident surface and on which a convex tens pattern is formed. The microlens sheet is disposed on the first light-exiting surface, and includes a microlens pattern. The adhesion element is disposed between the convex lens plate and the microlens sheet to combine the convex lens plate with the microlens sheet. The convex tens pattern includes a plurality of convex in lenses having a stripe shape extending lengthwise along the convex lens plate.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: March 16, 2010
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Jheen-Hyeok Park, Dong-Hoon Kim, Jin-Sung Choi, Tae-Seok Jang, Jeong-Hwan Lee
  • Patent number: 7633238
    Abstract: A lamp driving device includes first, second, and third voltage converters. The first voltage converter converts a direct current (DC) power voltage to a first pulse voltage. The second voltage converter converts the DC power voltage to a second pulse voltage. The third voltage converter generates a high alternating current (AC) voltage based on the first and second pulse voltages. The lamp driving device generates the high AC voltage without a transformer, so that a manufacturing cost of a display apparatus adopting the lamp driving device may be reduced.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: December 15, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Moon-Shik Kang, Myung-Joong Youn, Jheen-Hyeok Park, Gun-Woo Moon, Hyun-Ki Yoon, Eun-Seok Choi
  • Patent number: 7581868
    Abstract: In a backlight assembly and an LCD apparatus having the same, the backlight assembly includes a lamp that generates light and a light guiding plate. The light guiding plate includes a light incident surface, a light reflecting surface and a light exiting surface. The light generated from the lamp is incident into the light incident surface. The light reflecting surface is extended from a side of the light incident surface. The light reflecting surface has a prism pattern. The light exiting surface is extended from another side of the light incident surface. An angle formed between the light incident surface and the light exiting surface is smaller than about 90 degrees, and the light incident surface and the light reflecting surface face each other.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: September 1, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Hoon Kim, Jheen-Hyeok Park, Jin-Sung Choi, Jong-Dae Park
  • Publication number: 20090121643
    Abstract: A backlight unit of a liquid crystal display includes a lamp, a balancing pattern capacitor electrically connected to the lamp for current balance, a transformer electrically connected to the lamp via the balancing pattern capacitor, a sensing pattern capacitor electrically connected to a terminal of the balancing pattern capacitor connected to the lamp to detect an abnormal driving state of the lamp, and a feedback circuit unit electrically connected to the sensing pattern capacitor to control the abnormal driving state of the lamp. A liquid crystal display device including the backlight unit is also disclosed.
    Type: Application
    Filed: September 10, 2008
    Publication date: May 14, 2009
    Inventors: Jin-Won Jang, Jheen-Hyeok Park, Moon-Shik Wang
  • Patent number: 7528915
    Abstract: A display device comprises an optical module, a light source unit, a container and a display panel. The optical module comprises at least one optical member and a transparent adhesion member combined with the optical member. The optical member has a first modulus of elasticity, and the transparent adhesion member has a second modulus of elasticity that is substantially identical to the first modulus of elasticity. The light source unit is disposed in a light providing region of the display device to generate a light. The container receives the light source unit and the optical module. The display panel is received in the container and disposed in a display region of the display device. The display panel displays an image based on a light passing through the optical module.
    Type: Grant
    Filed: September 1, 2005
    Date of Patent: May 5, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Sung Choi, Jheen-Hyeok Park, Dong-Hoon Kim, Jong-Dae Park, Jin-Mi Jung, Jeong-Hwan Lee
  • Patent number: 7517129
    Abstract: A light guide plate includes a first optical member having a first light path-changing portion to separate a first light portion and a second light portion from a light, and a second optical member having a second light path-changing portion corresponding to the first light path-changing portion. The first optical member has a first refractive index against the first light portion of the light and a second refractive index against the second light portion of the light, and the second optical member has the first refractive index against the first and second light portions. Thus, brightness and brightness uniformity of an image displayed on a display apparatus may be improved, and a number of parts of the display apparatus may be reduced.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: April 14, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Sung Choi, Jheen-Hyeok Park, Byung-Yun Joo, Ju-Hwa Ha, Jung-Wook Paek
  • Patent number: 7510747
    Abstract: Provided herein is a lens composition of an LED device for an LCD having high transparency and high heat resistance, and an LED device, a backlight unit and an LCD comprising the lens composition. The lens composition includes a copolymer represented by the formula 1 and having a weight average molecular weight of about 5,000 to about 500,000: wherein R1 and R2 independently represent a hydrogen atom, a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms or —COOR3 group in which R3 represents a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms, R4 and R5 independently represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, the ratio n/n+m ranges from about 0.3 to about 0.995, and the ratio m/n+m ranges from about 0.005 to about 0.7.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: March 31, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-sung Choi, Jheen-hyeok Park, Sang-hoon Lee, Si-joon Song, Eun-jeong Kang
  • Patent number: 7450809
    Abstract: An optical unit, a method of manufacturing the same, a backlight assembly having the same and a display device have the same are provided. The optical unit includes a transparent body, a diffusion part and a luminance increasing part. The diffusion part is formed on or in the body to diffuse light. The luminance increasing part includes an embossing pattern formed on the body to increase a luminance of the diffused light when viewed on a plane.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: November 11, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Sung Choi, Jheen-Hyeok Park, Ju-Hwa Ha
  • Patent number: 7440046
    Abstract: The present disclosure relates to a liquid crystal display (LCD). There is provided an LCD comprising at least one lamp, a light guide plate for converting light incident from the lamp into a surface light source, an LCD panel disposed above the light guide plate for displaying an image thereon, a first reflection plate disposed below the light guide plate and including an end bent to extend parallel to a surface of the light guide plate such that the reflection plate can surround the lamp installed on the surface of the light guide plate, a mold frame including a space for accommodating the lamp, the light guide plate, the LCD panel and the reflection palate therein and including a portion of a sidewall protruding into the LCD to surround the top of the lamp, and a second reflection plate disposed on a rear surface of a portion of the mold frame arranged above the lamp. Therefore, a thin and lightweight LCD can be obtained and lamp efficiency can also be improved.
    Type: Grant
    Filed: July 29, 2006
    Date of Patent: October 21, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung Yong Kang, Seong Sik Choi, Jheen Hyeok Park, Jeoung Gwen Lee, Yong Gwang Won, Tae Seok Jang
  • Patent number: 7387422
    Abstract: A light-guide plate includes an incident surface receiving light, an upper surface extended from a first side of the incident surface, a lower surface opposed to the upper surface and a plurality of first prisms protruding from the upper surface and spaced apart by a separation distance.
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: June 17, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-Gwang Won, Jeoung-Gwen Lee, Sung-Yong Kang, Jheen-Hyeok Park
  • Publication number: 20080136344
    Abstract: A lamp driving device includes first, second, and third voltage converters. The first voltage converter converts a direct current (DC) power voltage to a first pulse voltage. The second voltage converter converts the DC power voltage to a second pulse voltage. The third voltage converter generates a high alternating current (AC) voltage based on the first and second pulse voltages. The lamp driving device generates the high AC voltage without a transformer, so that a manufacturing cost of a display apparatus adopting the lamp driving device may be reduced.
    Type: Application
    Filed: October 30, 2007
    Publication date: June 12, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Moon-Shik Kang, Myung-Joong Youn, Jheen-Hyeok Park, Gun-Woo Moon, Hyun-Ki Yoon, Eun-Seok Choi
  • Publication number: 20070297062
    Abstract: An integral optical plate includes a convex lens plate, a microlens sheet and an adhesion element. The convex lens plate includes a first light incident surface into which light is incident and a first light-exiting surface disposed opposite the first light incident surface and on which a convex tens pattern is formed, The microlens sheet is disposed on the first light-exiting surface, and includes a microlens pattern, The adhesion element is disposed between the convex lens plate and the microlens sheet to combine the convex lens plate with the microlens sheet. The convex tens pattern includes a plurality of convex in lenses having a stripe shape extending lengthwise along the convex lens plate.
    Type: Application
    Filed: June 19, 2007
    Publication date: December 27, 2007
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jheen-Hyeok Park, Dong-Hoon Kim, Jin-Sung Choi, Tae-Seok Jang, Jeong-Hwan Lee
  • Patent number: 7289095
    Abstract: A liquid crystal display is provided, which includes: a liquid crystal panel including a plurality of pixels including switching elements, a plurality of gate lines for transmitting gate signals to the switching elements, and a plurality of data lines for transmitting data voltages to the pixels; a data driver including a plurality of data driving ICs connected to respective sets of the data lines, receiving image data, and applying the data voltages corresponding to the image data to the data lines; and a gate driver applying the gate voltages to the gate lines, wherein the data driving ICs are supplied with a ground voltage and a supply voltage and voltage levels of the image data swing with reference to a reference voltage lower than the supply voltage.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: October 30, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jheen-Hyeok Park, Sin-Gu Kang, Nam-Soo Kang, In-Yong Hwang, Ji-Hoon Kim, Sun-Kyu Son, Gyu-Su Lee
  • Publication number: 20070086191
    Abstract: An optical member that lends itself to be more cost-effectively manufactured than a conventional optical member is presented. A display device made with the optical member can be thinner than the conventional optical member. The optical member includes a light-incident face that receives light emitted from a lamp positioned at a side of the optical member, a light-exiting face that is in a plane perpendicular to the light-incident face, and a light reflecting face opposite to the light-exiting face. A light-concentrating pattern having a plurality of concentric circles is formed on the light-exiting face. The light-concentrating pattern may be the Fresnel lens pattern. A diffusing pattern for diffusing the light is formed on the light reflecting face. Since patterns are formed on the optical member, additional optical sheet such as a prism sheet, a reflective polarizing sheet, a diffusion sheet, etc., is unnecessary.
    Type: Application
    Filed: September 21, 2006
    Publication date: April 19, 2007
    Inventors: Jin-Sung Choi, Jung-Wook Paek, Jheen-Hyeok Park, Byung-Yun Joo, Ju-Hwa Ha
  • Publication number: 20070069625
    Abstract: A fluorescent lamp with a lengthened lifetime that emits a reduced amount of ultraviolet light is presented. The lamp includes a discharge tube, a plurality of discharge electrodes and a discharge gas. The discharge tube is made of a material containing titanium oxide, and a fluorescent layer is deposited on an inner surface of the discharge tube. The discharge electrodes are made of a material containing a nickel-niobium alloy. The discharge electrodes are on end portions of the discharge tube, respectively. The discharge gas is in the discharge tube. A backlight assembly and a display device made with such fluorescent lamp is also presented.
    Type: Application
    Filed: July 21, 2006
    Publication date: March 29, 2007
    Inventors: Jin-Sung Choi, Sang-Hyuck Yoon, Jheen-Hyeok Park
  • Publication number: 20070070649
    Abstract: A light-guide plate includes an incident surface receiving light, an upper surface extended from a first side of the incident surface, a lower surface opposed to the upper surface and a plurality of first prisms protruding from the upper surface and spaced apart by a separation distance.
    Type: Application
    Filed: August 17, 2006
    Publication date: March 29, 2007
    Inventors: Yong-Gwang Won, Jeoung-Gwen Lee, Sung-Yong Kang, Jheen-Hyeok Park