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: 20140168566
    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: February 24, 2014
    Publication date: June 19, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Joo-Woan CHO, Se-Ki PARK, Seong-SiK CHOI
  • Publication number: 20140119054
    Abstract: A backlight assembly includes a plurality of point light sources, a light guide plate (“LGP”) and a printed circuit board (“PCB”). The LGP has a light incident face in which light is incident, a side surface extending from an edge portion of the light incident face, and a fixing groove which is formed from the side surface toward an inner portion thereof The PCB includes a point light source disposing portion in which the point light sources are disposed along a first direction, an extending portion extending from the point light disposing portion along a second direction substantially perpendicular to the first direction, and a protrusion which is fixed at an end portion of the extending portion. The protrusion of the PCB is coupled with the fixing groove of the LGP.
    Type: Application
    Filed: January 2, 2014
    Publication date: May 1, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Joo-Woan CHO, Sung-Kyu SHIM, Sang-Hoon LEE, Joo-Young KIM, Taek-Sun SHIN, Jin-Hee PARK, Kwang-Wook CHOI
  • Publication number: 20140111735
    Abstract: A liquid crystal display apparatus includes a display panel that displays an image, a backlight unit that provides a light to the display panel, and a frame that accommodates the display panel and the backlight unit. The backlight unit includes a light source that emits the light, a diffusion plate that diffuses the light from the light source, an optical sheet that condenses the diffused light and provides the condensed light to the display panel, and a clip that couples the diffusion plate and the optical sheet.
    Type: Application
    Filed: March 15, 2013
    Publication date: April 24, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Joo Woan CHO, Sangheon YE
  • Patent number: 8702296
    Abstract: A display apparatus includes a display panel which receives a light and displays an image, a bottom chassis which accommodates the display panel, and a top chassis which faces the bottom chassis with the display panel therebetween. The top chassis overlaps a portion of the display panel and includes a first thru-hole which extends through a thickness of a side portion thereof. The display apparatus includes a printed circuit board and a coupling member. The printed circuit board applies an electrical signal to the display panel, is under the side portion, and includes a second thru-hole which corresponds to the first thru-hole. The coupling member extends through the first thru-hole and the second thru-hole, and couples the top chassis and the printed circuit board to each other.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: April 22, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kwang-Wook Choi, YongWoo Lee, Joo Woan Cho, Seongsik Choi
  • Patent number: 8684550
    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: Grant
    Filed: July 29, 2009
    Date of Patent: April 1, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo-Woan Cho, Seong-Sik Choi, Se-Ki Park
  • Patent number: 8636399
    Abstract: A backlight assembly includes a plurality of point light sources, a light guide plate (“LGP”) and a printed circuit board (“PCB”). The LGP has a light incident face in which light is incident, a side surface extending from an edge portion of the light incident face, and a fixing groove which is formed from the side surface toward an inner portion thereof. The PCB includes a point light source disposing portion in which the point light sources are disposed along a first direction, an extending portion extending from the point light disposing portion along a second direction substantially perpendicular to the first direction, and a protrusion which is fixed at an end portion of the extending portion. The protrusion of the PCB is coupled with the fixing groove of the LGP.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: January 28, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo-Woan Cho, Sung-Kyu Shim, Sang-Hoon Lee, Joo-Young Kim, Taek-Sun Shin, Jin-Hee Park, Kwang-Wook Choi
  • Publication number: 20140009914
    Abstract: A curved frame is provided for securing therein a display panel and an optionally curved backlight unit. The curved frame includes an upper frame part, a lower frame part, a left frame part and a right frame part. The upper frame part has a first set of curved guide rails formed thereon, which guide rails are bent in accordance with first curvatures of upper sides of the display panel and the backlight unit. The lower frame part has a second set of guide rails formed thereon, which guide rails are bent in accordance with second curvatures of lower sides of the display panel and the backlight unit. The left frame part is combined with each of first edge portions of the upper and lower frame parts. The right frame part is combined with each of second edge portions of the upper and lower frame parts.
    Type: Application
    Filed: September 13, 2012
    Publication date: January 9, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Joo-Woan CHO, Yoon-Soo KWON
  • Patent number: 8602627
    Abstract: A display apparatus includes a light source unit, a supporter, a light guide plate, and a display panel. The light source unit includes a substrate and a plurality of light sources disposed on a front surface of the substrate to emit a light. The supporter supports the light source unit. The light guide plate includes a light incident surface facing the front surface of the substrate, to which the light is incident, and a light exiting surface from which the light exits. The display panel receives the light from the light guide plate to display an image.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: December 10, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo Woan Cho, Seongsik Choi, YoungWoo Lee
  • Patent number: 8576240
    Abstract: A display apparatus includes a backlight unit generating light, a display panel including a plurality of pixels controlling transmittance of the light based upon pixel data, a timing controller compensating the pixel data, and a data driver driving the display panel based upon the compensated pixel data. The display panel includes a first area to which the light having a first brightness is supplied and a second area to which the light having a second brightness lower than the first brightness is supplied. The timing controller compensates for the pixel data supplied to at least one area of the first and second areas using a predetermined compensation value to reduce a brightness difference between the first and second areas.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: November 5, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo Woan Cho, Gicherl Kim, Jaejoong Kwon, Sung-Kyu Shim, SEul-Gi Kim
  • Patent number: 8475027
    Abstract: Provided are a backlight assembly and a display device having the same. The backlight assembly includes; a light guide plate (“LGP”) having a light incident portion upon which light is incident and an opposite portion which is disposed substantially opposite to the light incident portion, a lower housing which accommodates the LGP therein, and at least one LGP fixing tape which fixes the LGP into the lower housing, wherein the at least one LGP fixing tape is interposed between the lower housing and lower surfaces of two opposite ends of the light incident portion of the LGP.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: July 2, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo-Woan Cho, Yong-Woo Lee, Hyoung-Joo Kim
  • Patent number: 8439551
    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: Grant
    Filed: September 29, 2009
    Date of Patent: May 14, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo-Woan Cho, Jae-Chang Choi, Yong-Woo Lee
  • Publication number: 20130107161
    Abstract: Provided is a liquid crystal display, including: a liquid crystal display panel assembly including a display panel; a light assembly including a light source; a chassis to receive the light assembly; and a pressing plate including a first portion coupled in contact with a portion of the chassis, and a second portion to hold the light source between the pressing plate and the chassis.
    Type: Application
    Filed: April 3, 2012
    Publication date: May 2, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kwang-Wook CHOI, Joo Woan CHO, Seong Sik CHOI
  • Patent number: 8421947
    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: Grant
    Filed: October 7, 2009
    Date of Patent: April 16, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo-Woan Cho, Se-Ki Park, Seong-SIK Choi
  • Publication number: 20130039092
    Abstract: Display apparatuses are provided. The display apparatus includes a light source package generating light, a circuit board including a recessed region in which the light source package is disposed, a display panel displaying images, and a light guide plate directing the light generated from the light source package onto the display panel. The light guide plate includes a top surface, a bottom surface, and a plurality of sidewall surfaces. One of the sidewall surfaces of the light guide plate is a light incident surface on which the light from the light source package is irradiated. A distance between the light source package and the light incident surface is less than a width of the circuit board.
    Type: Application
    Filed: March 19, 2012
    Publication date: February 14, 2013
    Inventors: JOO-WOAN CHO, Hyun-Hua Song, Eui Jeong Kang, Seongsik Choi
  • Publication number: 20120300490
    Abstract: A display apparatus includes a display panel which receives a light and displays an image, a bottom chassis which accommodates the display panel, and a top chassis which faces the bottom chassis with the display panel therebetween. The top chassis overlaps a portion of the display panel and includes a first thru-hole which extends through a thickness of a side portion thereof. The display apparatus includes a printed circuit board and a coupling member. The printed circuit board applies an electrical signal to the display panel, is under the side portion, and includes a second thru-hole which corresponds to the first thru-hole. The coupling member extends through the first thru-hole and the second thru-hole, and couples the top chassis and the printed circuit board to each other.
    Type: Application
    Filed: October 27, 2011
    Publication date: November 29, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kwang-Wook Choi, YongWoo Lee, Joo Woan Cho, Seongsik Choi
  • Patent number: 8297823
    Abstract: A backlight assembly includes a plurality of point light sources, a light guide plate (“LGP”) and a printed circuit board (“PCB”). The LGP has a light incident face in which light is incident, a side surface extending from an edge portion of the light incident face, and a fixing groove which is formed from the side surface toward an inner portion thereof. The PCB includes a point light source disposing portion in which the point light sources are disposed along a first direction, an extending portion extending from the point light disposing portion along a second direction substantially perpendicular to the first direction, and a protrusion which is fixed at an end portion of the extending portion. The protrusion of the PCB is coupled with the fixing groove of the LGP.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: October 30, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo-Woan Cho, Sung-Kyu Shim, Sang-Hoon Lee, Joo-Young Kim, Taek-Sun Shin, Jin-Hee Park, Kwang-Wook Choi
  • Patent number: 8267568
    Abstract: A display device includes a light source assembly, a light guide plate (LGP), a lower receiving container, a reinforcing member, a display panel and an upper receiving container. The lower receiving container includes a first coupling portion formed on the first bottom surface. The reinforcing member includes a pressing down part structured to pressing down on an upper surface adjacent to a corner portion of the LGP and a fixing part integrally extending from an end portion of the pressing down part in parallel with a first sidewall of the lower receiving container to have a second coupling portion being coupled with the first coupling portion. The reinforcing member covers the light source assembly. The display panel is disposed on the LGP and the reinforcing member. The upper receiving container includes a third coupling portion coupled to the first coupling portion and the second coupling portion through a coupling member.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: September 18, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo-Woan Cho, Yong-Woo Lee, Se-Ki Park
  • Publication number: 20120224119
    Abstract: A backlight assembly includes a light-emitting diode (LED) module and a bottom chassis. The LED module includes an LED package in which at least one LED chip is mounted, and first and second wire sockets respectively making contact with lead frames formed at two sides of the LED package. The bottom chassis has a coupling hole formed through a bottom portion for receiving a coupling hook of the LED module. Thus, a wire socket is configured to make contact with a lead frame formed at a side portion of an LED package and power is received through a wire inserted through the wire socket, so that an additional printed circuit board (PCB) or an additional flexible printed circuit board (FPCB) for providing the LED package with power may be omitted.
    Type: Application
    Filed: September 1, 2011
    Publication date: September 6, 2012
    Inventors: Joo-Woan Cho, Yong-Woo Lee, Hyoung-Joo Kim
  • Patent number: 8203666
    Abstract: In a method of manufacturing a backlight assembly, a light reflective and heat-radiating sheet including a light reflective sheet layer to reflect light and a heat-radiating sheet layer are prepared. The heat-radiating sheet layer includes a coupling layer integrally formed with a surface of the light reflective sheet layer and heat-diffusing particles are dispersed in the coupling layer to diffuse heat provided from the exterior. The light reflective and heat-radiating sheet is disposed so that the coupling layer is adhered to a bottom plate of a receiving container. Thus, impurities may be prevented and/or reduced, and assembling efficiency may be improved.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: June 19, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo-Woan Cho, Seon-Bae Kim, Seong-Sik Choi, Yong-Woo Lee, Hyun-Chul Bae, Du-Hwan Chung, Cheol-Yong Noh, Chi-O Cho
  • Patent number: 8197081
    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: Grant
    Filed: October 28, 2009
    Date of Patent: June 12, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo-Woan Cho, Yong-Woo Lee, Seong-Sik Choi