Patents by Inventor Seong-Sik Choi

Seong-Sik Choi 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: 20110090426
    Abstract: Provided are a backlight assembly with improved heat dissipation, and a liquid crystal display (LCD) having such a backlight assembly. The backlight assembly includes: a light guide plate; a light source unit disposed on a side of the light guide plate; an intermediate housing covering an upper surface of the light source unit; and a lower housing coupled to the intermediate housing to accommodate the light guide plate and the light source unit, wherein the lower housing includes: a light source unit-fixing frame to which the light source unit is fixed, the light source unit-fixing frame contacting an inner surface of the intermediate housing; and a body portion disposed under the light guide plate and coupled to the light source unit-fixing frame.
    Type: Application
    Filed: October 18, 2010
    Publication date: April 21, 2011
    Inventors: Jae-Chang Choi, Seong-Sik Choi
  • Patent number: 7927001
    Abstract: In a backlight assembly and a display device including the backlight assembly, the backlight assembly includes a light dispersion member and a light source having a plurality of light source members, a distance defined between the light sources members adjacent to each other. The light dispersion member includes a lower face portion having alternately arranged ridges and grooves. Each light source is positioned under a respective ridge. An interval between a center of each light source and the respective ridge positioned directly over the light source is from about 0.2 to about 0.55 times the distance.
    Type: Grant
    Filed: November 28, 2005
    Date of Patent: April 19, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seong-Sik Choi, Dong-Lyoul Shin, Jae-Hwan Chun, Byung-Yun Joo, Jung-Wook Paek, Jin-sung Choi, Ju-Hwa Ha, Heu-Gon Kim, Sang-Hoon Lee
  • Patent number: 7926965
    Abstract: A lamp socket that can reduce the thickness of both sides of a display device includes a socket main body having a contact hole formed therein, and a power-applying member coupled to the socket main body through the contact hole, and provided with a lamp connection terminal, an inverter connection terminal, and a terminal connection part connected with the lamp connection terminal in a bent form so as to connect the lamp connection terminal with the inverter connection terminal. Accordingly, the thickness of both sides of the display device including the lamp sockets is reduced, and the compatibility of the product is extended.
    Type: Grant
    Filed: June 11, 2008
    Date of Patent: April 19, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo-Woan Cho, Seong-Sik Choi, Yong-Woo Lee, Hyun-Chul Bae, Du-Hwan Chung, Cheol-Yong Noh
  • Publication number: 20110085107
    Abstract: A backlight assembly of a Liquid Crystal Display (LCD) is provided with improved heat dissipation capabilities. The improved dissipation capabilities come from one or more light-sourcing unit fixing frames that have extensions which protrude to outside a housing that houses light sourcing units of the LCD. The light-sourcing unit fixing frames mechanically interlock with the housing.
    Type: Application
    Filed: October 1, 2010
    Publication date: April 14, 2011
    Inventors: Cheol-Yong NOH, Jae-Chang Choi, Seong-Sik Choi
  • Patent number: 7903201
    Abstract: A liquid crystal display device includes a liquid crystal display panel, a plurality of light sources disposed behind the liquid crystal display panel, and a cover which accommodates the light sources. The cover includes a first cover part parallel with the liquid crystal display panel and disposed behind the light sources, a second cover part bent upward from an end portion of the first cover part, and a third cover part bent upward from the first cover part which faces the light sources. An end portion of the light sources is disposed between the second cover part and the third cover part.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: March 8, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo-woan Cho, Du-hwan Chung, Tae-seok Jang, Seong-sik Choi
  • Patent number: 7903081
    Abstract: A backlight driver includes an inverter controller, a dimming signal compensator and an inverter. The inverter controller generates a pulse width modulation signal in response to a control signal and outputs a first dimming signal that represents a duty ratio of the pulse width modulation signal and a second dimming signal that represents an amplitude of the pulse width modulation signal. The dimming signal compensator receives the first and second dimming signals, compares the first dimming signal with a predetermined reference duty ratio and compensates the second dimming signal in accordance with the compared result to generate a third dimming signal. The inverter outputs a driving voltage to drive the backlight and varies a voltage level of the driving voltage in response to the first and third dimming signals to control a brightness of the backlight.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: March 8, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyeon-Yong Jang, Seong-Sik Choi
  • Patent number: 7884894
    Abstract: A liquid crystal display device includes a liquid crystal display panel, a plurality of lamps disposed behind the liquid crystal display panel, and a container which accommodates the lamps. The container includes a first container component parallel with the liquid crystal display panel and disposed behind the lamp, a second container component upwardly bent from an end part of the first container component, and a third container component that is cut away from the first container component and is upwardly bent from the first container component. The liquid crystal display device also includes a reflective member including a first reflective member at least partially disposed between the first container component and the lamp, and a second reflective member separated from the first reflective member and covering the third container component.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: February 8, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo-woan Cho, Seong-sik Choi, Du-hwan Chung
  • Patent number: 7883231
    Abstract: Provided is a backlight assembly which includes integral power supply sockets and ground sockets, in which the number of parts is reduced in addition to the manufacturing cost. The backlight assembly includes a lamp including a lamp tube and an electrode that protrudes beyond either end of the lamp tube, a power supply socket including a first plate that has a first guide groove through which the electrode is inserted and a plate spring that is disposed on one side of the first plate and fixes the electrode in the first guide groove by pressurizing the electrode, and a bottom chassis containing the lamp and the power supply socket therein, in which the first plate and the plate spring are formed of a conductive material.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: February 8, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo-Woan Cho, Seong-sik Choi, Du-hwan Chung, Cheol-yong Noh
  • Publication number: 20100321924
    Abstract: A lamp socket includes a socket housing and a plurality of power supply members. The socket housing has a plurality of connecting holes extended in a vertical direction. The power supply members are disposed in the connecting holes, respectively, and each of the power supply members includes a plurality of lamp connecting parts and an inverter connecting part. The lamp connecting parts are protruded from an upper surface of the socket housing and include first and second portions facing each other. The inverter connecting part is integrally formed with the lamp connecting parts, and is protruded from a lower surface of the socket housing.
    Type: Application
    Filed: August 26, 2010
    Publication date: December 23, 2010
    Inventors: JOO-WOAN CHO, SEONG-SIK CHOI, HYEON-YONG JANG, TAE-SEOK JANG, JIN-SUNG CHOI, DU-HWAN CHUNG, DONG-HOON KIM, SEUNG-HA SHIN
  • Publication number: 20100277664
    Abstract: Provided is a liquid crystal display (LCD) with improved heat dissipation and reduced thickness. The LCD includes for an embodiment: a lower housing; a heat-dissipating member which is disposed in the lower housing; a plurality of point light sources which are disposed on the heat-dissipating member; a plurality of electric wires which supply power to the point light sources; and a light guide plate (LGP) which is disposed in the lower housing in such a way that side surfaces of the LGP face the point light sources.
    Type: Application
    Filed: April 27, 2010
    Publication date: November 4, 2010
    Inventors: Joo-Young KIM, Hyun-Chul Bae, Jae-Chang Choi, Seong-Sik Choi
  • Publication number: 20100246162
    Abstract: A lamp socket formed to facilitate the performance of a lamp assembly, and a display device having the lamp socket, are provided. The lamp socket includes a holding portion mounted on a board, and a terminal portion bent from the holding portion and having a lamp insertion hole into which a lamp is securely inserted, wherein the lamp insertion hole is formed through the terminal portion and has a cross-sectional width gradually decreasing toward a lower portion of the terminal portion.
    Type: Application
    Filed: February 16, 2010
    Publication date: September 30, 2010
    Inventors: Joo-Woan Cho, Seong-Sik Choi, Yong-Woo Lee
  • Patent number: 7789687
    Abstract: A lamp socket includes a socket housing and a plurality of power supply members. The socket housing has a plurality of connecting holes extended in a vertical direction. The power supply members are disposed in the connecting holes, respectively, and each of the power supply members includes a plurality of lamp connecting parts and an inverter connecting part. The lamp connecting parts are protruded from an upper surface of the socket housing and include first and second portions facing each other. The inverter connecting part is integrally formed with the lamp connecting parts, and is protruded from a lower surface of the socket housing.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: September 7, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo-Woan Cho, Seong-Sik Choi, Hyeon-Yong Jang, Tae-Seok Jang, Jin-Sung Choi, Du-Hwan Chung, Dong-Hoon Kim, Seung-Ha Shin
  • Patent number: 7787070
    Abstract: A liquid crystal display device capable of securing the lamp wire to the mold frame is disclosed. The liquid crystal display device includes a liquid crystal display panel for displaying an image, a back light assembly for providing a light to the liquid crystal display panel and a mold frame receiving the liquid crystal display panel and the backlight assembly. The back light assembly includes a light supplying part including a light source for generating a light and a lamp wire for supplying an electrical current to the light supplying part. A securing portion for securing the lamp wire is formed on a side surface or a rear surface of the mold frame, shaped as a groove or a depressed portion, and the lamp wire is secured to the securing portion in such a way that securing and separation of the lamp wire is performed with ease and simplicity. A pair of securing ribs are formed on the bottom of the securing depressed portions facing each other.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: August 31, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seong-Sik Choi, Gong-Sub Kwon
  • Patent number: 7775701
    Abstract: A backlight assembly includes a light source, a light-guide plate and an integrally formed frame. The light-guide plate guides light generated from the light source. The integrally formed frame includes a chassis and a mold frame integrally combined with the chassis as an indivisible unitary element through insert/outsert injection. The integrally formed frame receives the light source and the light-guide plate. A hemming part is formed on a sidewall of the chassis to increase strength of the integrally formed frame. Therefore, the number of elements is decreased, and strength against bending stress, impact resistance and heat dissipation are improved.
    Type: Grant
    Filed: July 14, 2008
    Date of Patent: August 17, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-Woo Lee, Seong-Sik Choi, Cheol-Yong Noh
  • Publication number: 20100188840
    Abstract: A backlight assembly includes a first substrate, a first electrode disposed on the first substrate, a second substrate disposed opposite to the first substrate, and a connector. The connector is disposed on the second substrate and includes a second electrode connected to the first electrode, and an elastic member which applies a force to the second electrode. The connector increases a contact force between the first electrode and the second electrode by applying the force to the second electrode.
    Type: Application
    Filed: November 16, 2009
    Publication date: July 29, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Joo-Woan CHO, Seong-Sik CHOI, Yong-Woo LEE
  • Patent number: 7764331
    Abstract: An LCD including an LCD panel and a frame having a front frame portion providing a display window exposing a display area of the LCD panel. The frame includes a side frame portion and a chamfer portion intermediate the front and side frame portions.
    Type: Grant
    Filed: June 12, 2006
    Date of Patent: July 27, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seong-sik Choi, Jae-hwan Chun
  • Patent number: 7758197
    Abstract: A backlight assembly includes a container, a plurality of lamps and a lamp-fixing member. The container includes a bottom face and side faces extending therefrom that define a receiving space. The lamps are arranged in parallel with each other in the container. The lamp-fixing member includes a support body installed in the container and arranged in a direction intersecting a lengthwise direction of extension of each of the lamps, a lamp-fixing portion protruding from the support body and covering a respective lamp, and a boss protruding from an inner face of the lamp-fixing portion and extending toward a center of the respective lamp to fix the respective lamp with a corresponding lamp-fixing portion via a point or line contact. Thus, a local decrease in temperature of the lamp covered by the lamp-fixing portion may be prevented to improve image display quality by preventing or eliminating dark spots.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: July 20, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seong-Sik Choi, Kyung-Rok Ko, Du-Hwan Chung, Min-Ho Ok
  • Publication number: 20100172124
    Abstract: A light source includes a heat-dissipating plate, a heat-dissipating pin protruding from the heat-dissipating plate, a light emitting chip for emitting light, and a housing surrounding the light emitting chip, the housing having a receiving space spanning from a top surface to a bottom surface of the housing, wherein the heat-dissipating plate is disposed on the bottom surface of the housing, wherein the light emitting chip is disposed on the heat-dissipating plate exposed by the receiving space.
    Type: Application
    Filed: July 29, 2009
    Publication date: July 8, 2010
    Inventors: JOO-WOAN CHO, Seong-Sik Choi, Se-Ki Park
  • Publication number: 20100128194
    Abstract: A liquid crystal display (“LCD”) module includes a liquid crystal panel, a mold frame provided below the liquid crystal panel and supporting the liquid crystal panel, a light guide plate provided below the mold frame, and a light source assembly coupled to an outside of the mold frame to accommodate the light guide plate therein, the light source assembly partially inserted into the mold frame, and supplying light to the light guide plate.
    Type: Application
    Filed: October 7, 2009
    Publication date: May 27, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Joo-Woan Cho, Se-Ki Park, Seong-SIK Choi
  • Publication number: 20100118514
    Abstract: A backlight assembly includes a light guide plate, a light source assembly disposed adjacent to at least one side of the light guide plate and supplies light to the light guide plate, a container receiving the light guide plate and the light source assembly and including a bottom portion and a first sidewall extended from edges of the bottom portion to form a receiving space, and a coupling member disposed inside the receiving space of the container, and overlapping an upper surface of the light source assembly. The light source assembly is disposed adjacent to the first sidewall, the bottom portion, the coupling member and the light guide plate. The insertion direction of the coupling member is substantially perpendicular to the bottom portion of the container.
    Type: Application
    Filed: October 28, 2009
    Publication date: May 13, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Joo-Woan CHO, Yong-Woo LEE, Seong-Sik CHOI