Patents by Inventor Joo-woan Cho

Joo-woan Cho 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: 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
  • Patent number: 7850360
    Abstract: The present invention relates to a backlight assembly and a liquid crystal display (“LCD”) having the same. The backlight assembly includes a light source unit including a printed circuit board (“PCB”) and a plurality of light emitting diodes (“LEDs”) mounted on a side of the PCB, a receiving member including a base plate and a plurality of walls that extend from the base plate at an angle and receive the light source unit, and a plurality of through holes or uneven patterns formed in a region of the receiving member where at least the light source unit is disposed.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: December 14, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Se Ki Park, Moon Hwan Chang, Gi Cherl Kim, Joo Woan Cho, Jung Hyeon Kim
  • Publication number: 20100295876
    Abstract: In a display apparatus according to one or more embodiments, a boosting circuit boosts an input voltage to a backlight driving voltage, and a backlight unit receives the backlight driving voltage to generate light. A backlight driving circuit controls the boosting circuit in response to a dimming signal and compensates a plurality of feedback voltages fedback from the backlight unit to output a panel driving voltage. A panel driving circuit receives the panel driving voltage from the backlight driving circuit to output a data voltage corresponding to an image signal and receives a gate driving voltage to generate a gate voltage. A display panel displays an image in response to the gate voltage and the data voltage. Accordingly, a number of the boosting circuits for the display apparatus may decrease, thereby reducing a manufacturing cost of the display apparatus.
    Type: Application
    Filed: February 24, 2010
    Publication date: November 25, 2010
    Inventors: Ho-Sik SHIN, Gicherl Kim, Joo Woan Cho, Dae-Seop Kim, Young-Min Park
  • 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
  • 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
  • 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
  • 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: 20100149835
    Abstract: A backlight assembly includes a light guide plate guiding light, one or more light sources disposed on a side of the light guide plate and generating and providing the light to the light guide plate, a housing including a bottom portion and sidewall portions which each extend from the bottom portion, and accommodating the light guide plate and the light sources, and a light source cover. The light source cover includes a flat portion which contacts a top surface of the light guide plate, a height-adjusting portion which extends upward or downward from the flat portion to form a stepped shape and has the light sources installed thereunder, and fixing portions which extend from the height-adjusting portion and are fixed to a corresponding one of the sidewall portions. A centerline of the light sources is aligned with a centerline of the light guide plate.
    Type: Application
    Filed: September 29, 2009
    Publication date: June 17, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Joo-Woan CHO, Jae-Chang CHOI, Yong-Woo LEE
  • 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
  • Patent number: 7713092
    Abstract: A backlight assembly and a display device having the backlight assembly are provided where the backlight assembly includes a plurality of light sources for emitting light and a plurality of metal core printed circuit boards on which the light sources are mounted. The metal core printed circuit boards are directly connected to each other in predetermined regions to emit light in a surface direction. A method of assembling the backlight assembly is further provided.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: May 11, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Gi-Cherl Kim, Joo-Woan Cho, Sang-Gil Lee, Don-Chan Cho, Sang-Yu Lee
  • Patent number: 7708428
    Abstract: A backlight assembly includes a plurality of light source units and a partition member. Each of the light source units includes a plurality of light sources generating different wavelengths of light from each other and a circuit board on which the light sources are mounted. The partition member is disposed between the light source units to partially transmit and partially reflect the light generated from the light source units.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: May 4, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Se-Ki Park, Byung-Choon Yang, Joo-Woan Cho
  • Publication number: 20100103342
    Abstract: A backlight assembly includes a waveguide plate guiding light, a first light-emitting module disposed on a first side of the waveguide plate, the first light-emitting module including a plurality of first light-emitting blocks, a second light-emitting module disposed on a second side of the waveguide plate, the second light-emitting module including a plurality of second light-emitting blocks, and a plurality of optical drivers controlling luminance levels of the first light-emitting blocks and the second light-emitting blocks, wherein at least one of the first light-emitting blocks, at least one of the second light-emitting blocks, and at least one of the optical drivers are connected to each other
    Type: Application
    Filed: July 30, 2009
    Publication date: April 29, 2010
    Inventors: SE-KI PARK, Joo-Woan Cho, Ho-Sik Shin
  • Publication number: 20100085507
    Abstract: Disclosed is a display apparatus according to one or more embodiments. The display apparatus according to an embodiment includes a display panel, an optical sheet unit having a convex print pattern to maintain an interval with the display panel, and a light source supplying light to the display panel through the optical sheet unit. Each pattern of the optical sheet may be disposed on a non-display unit of the optical sheet unit.
    Type: Application
    Filed: March 18, 2009
    Publication date: April 8, 2010
    Inventors: Joo-Woan CHO, Jac-Chang Choi, Seong-Sik Choi
  • Patent number: 7661869
    Abstract: A backlight assembly includes a light-generating unit, a heat-radiation member, a first receiving container, and a second receiving container. The heat-radiation member is disposed under the light-generating unit and radiates heat generated by the light-generating unit. The first receiving container is composed of a bottom portion and side portion extended from the bottom portion. The first receiving container has an opening formed through partial removal of the bottom portion so that the heat-radiation member received inside is exposed. The second receiving container is disposed under the first receiving container. An air layer is formed in between the first and second receiving containers.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: February 16, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chun-Ho Song, Sang-Yu Lee, Gi-Cherl Kim, Seock-Hwan Kang, Joo-Woan Cho
  • Patent number: 7649590
    Abstract: An LCD includes an LCD panel, a light guiding plate disposed at a rear of the LCD panel and having a light incident surface on which a curved surface pattern is formed, and a point light source facing the light incident surface and disposed closer to the LCD panel than to a center of thickness of the light incident surface. Accordingly, the LCD including the point light source has excellent light efficiency and brightness uniformity.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: January 19, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Se-ki Park, Joo-woan Cho, Gi-cherl Kim, Seok-hyun Nam, Sang-yu Lee
  • Publication number: 20090267526
    Abstract: A display device includes a display panel, a power transmitting member and a heat diffusing member. The display panel includes a base substrate, a power input part, a power signal line and a display element. The base substrate has an upper surface and a lower surface opposite the upper surface. The power input part is formed in an outer peripheral area of the upper surface. The power signal line is electrically connected to the power input part. The display element is electrically connected to the power signal line and generates light based on a power signal transmitted via the power input part. The power transmitting member is electrically connected to the power input part to transmit the power signal to the power input part. The heat diffusing member is disposed on the lower surface, and includes a guide groove into which the power transmitting member is disposed.
    Type: Application
    Filed: April 7, 2009
    Publication date: October 29, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Si-Duk Sung, Joo-Woan Cho
  • Patent number: 7604494
    Abstract: A lamp socket that supports a lamp including a lamp body and one or more electrodes protruding from opposite end portions of the lamp body and that electrically connects an inverter circuit board driving the lamp and the lamp includes: a socket terminal having a first stopper where the electrodes are inserted in a first direction crossing a lengthwise direction of the electrodes to be held, the socket terminal providing an elastic force in a second direction substantially crossing the lengthwise direction of the electrodes and the first direction, whereby the first stopper is closely held to the electrodes.
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: October 20, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo-woan Cho, Sung-yong Kang
  • Publication number: 20090257216
    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: June 8, 2009
    Publication date: October 15, 2009
    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