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).

  • Curved frame and curved display device having the same
    Patent number: 9202395
    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: Grant
    Filed: September 13, 2012
    Date of Patent: December 1, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo-Woan Cho, Yoon-Soo Kwon
  • Liquid crystal display module, display device set including the same, and method of assembling liquid crystal display module
    Patent number: 9110324
    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: February 24, 2014
    Date of Patent: August 18, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Joo-Woan Cho, Se-Ki Park, Seong-Sik Choi
  • Light-emitting diode module, backlight assembly having the LED module and display device having the backlight assembly
    Patent number: 9111472
    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: Grant
    Filed: September 1, 2011
    Date of Patent: August 18, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Joo-Woan Cho, Yong-Woo Lee, Hyoung-Joo Kim
  • WAVELENGTH CONVERSION MEMBER, METHOD OF MANUFACTURING THE SAME, AND BACKLIGHT ASSEMBLY INCLUDING THE SAME
    Publication number: 20150219311
    Abstract: A wavelength conversion member is disclosed. In one aspect, the wavelength conversion member includes a first substrate, a second substrate formed over the first substrate, and a wavelength conversion layer interposed between the first and second substrates. A sealant is interposed between the first and second substrates and surrounds the wavelength conversion layer.
    Type: Application
    Filed: June 25, 2014
    Publication date: August 6, 2015
    Inventors: Joo Woan CHO, Byung Choon Yang
  • LASER CRYSTALLIZATION APPARATUS AND ORGANIC LIGHT-EMITTING DIODE (OLED) DISPLAY MANUFACTURED USING THE SAME
    Publication number: 20150159300
    Abstract: A laser crystallization apparatus and an organic light-emitting diode (OLED) display manufactured using the same are disclosed. In one aspect, the apparatus includes a stage configured to receive a target substrate having an amorphous silicon layer formed thereon and a first laser unit configured to crystalize the amorphous silicon layer so as to form a polycrystalline silicon layer. The polycrystalline silicon layer includes a plurality of protrusions. The apparatus also includes a second laser unit configured to remove at least part of the protrusions.
    Type: Application
    Filed: April 28, 2014
    Publication date: June 11, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Joo Woan Cho, Byoung Ho Cheong, Byoung Kwon Choo
  • LIGHT-EMITTING DIODE (LED) PACKAGE AND DISPLAY DEVICE HAVING THE SAME AS LIGHT SOURCE
    Publication number: 20150153504
    Abstract: A light-emitting diode (LED) package and a display device having the same are disclosed. In one aspect, the display device includes a display panel and a backlight assembly including a light-emitting diode (LED) package configured to output light via an opening and a light guide plate configured to guide the emitted light to the display panel. The LED package includes a housing having a light reflecting property and including a bottom portion, a sidewall portion connected to the bottom portion, and a cover portion connected to the sidewall portion, wherein the opening is defined in the sidewall portion and faces the light guide plate. The LED package also includes a plurality of LEDs accommodated in the housing, and wherein the LEDs are arranged in a first direction extending from the light guide plate to the opening.
    Type: Application
    Filed: June 25, 2014
    Publication date: June 4, 2015
    Inventors: Joo Woan CHO, Seok-Won KANG
  • APPARATUS AND METHOD FOR POLISHING AND STRENGTHENING SUBSTRATE
    Publication number: 20150144593
    Abstract: An apparatus and method for polishing and strengthening a substrate are disclosed. In one aspect, the apparatus includes a table on which a substrate is placed, a powder supply portion for polishing a surface of the substrate, a substance supply portion, and an injector. The powder supply portion is placed over the table. The substance supply portion is configured to supply a substance onto the polished surface of the substrate. The injector is configured to inject the powder from the powder supply portion onto the surface of the substrate and the substance from the substance supply portion onto the polished surface of the substrate.
    Type: Application
    Filed: June 11, 2014
    Publication date: May 28, 2015
    Inventors: Joo Woan Cho, Seungho Kim
  • DISPLAY DEVICE
    Publication number: 20150103286
    Abstract: A display device is disclosed. In one aspect, the display device includes a display panel displaying an image, a backlight assembly including a light source supplying light to the display panel, and a mold frame. The mold frame includes a quadrangular body surrounding the display panel and the backlight assembly, a support portion formed along an inner circumference of the body and supporting the display panel, and a plurality of buffer guides. The buffer guides are placed on the support portion the four corners of the mold frame. The buffer guide includes a bottom portion placed on the support portion and an impact absorbing portion formed over the bottom portion and contacting the body.
    Type: Application
    Filed: March 20, 2014
    Publication date: April 16, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Joo Woan Cho, Nak Cho Choi
  • CURVED FRAME AND DISPLAY DEVICE INCLUDING THE SAME
    Publication number: 20150062480
    Abstract: A curved frame for securing a display panel includes two long-side frame parts having a curved shape, each of the two long-side frame parts including a groove member provided through each of edge portions thereof and a first coupling hole defined to penetrate the groove member, and two short-side frame parts having a straight line shape, each of the two short-side frame parts including a protruding member provided in correspondence with the groove member of the two long-side frame parts and a second coupling hole defined to penetrate the protruding member, each of the two short-side frame parts being coupled to the two long-side frame parts to define a rectangular frame shape.
    Type: Application
    Filed: March 18, 2014
    Publication date: March 5, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Joo-Woan CHO, Myoung-Seok SON
  • FRAME FOR DISPLAY DEVICE AND DISPLAY DEVICE HAVING THE SAME
    Publication number: 20150029696
    Abstract: A frame for display device includes a plurality of cover members. Each of the cover members includes a support portion including a supporting body extending in a first direction, and a first extending portion extending from the supporting body in a second direction substantially perpendicular to the first direction, the first extending portion supporting an edge portion of a support plate of the display device, and a sidewall portion extending from the support portion to form a predetermined acute angle with respect to the support portion and covering a side of the display device.
    Type: Application
    Filed: November 15, 2013
    Publication date: January 29, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Su-Chang RYU, Sang-Heon YE, Joo-Woan CHO
  • Display apparatus and light source packages employed therein
    Patent number: 8931944
    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: Grant
    Filed: March 19, 2012
    Date of Patent: January 13, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo Woan Cho, Hyun-Hwa Song, Eui Jeong Kang, Seongsik Choi
  • BACKLIGHT UNIT AND DISPLAY APPARATUS HAVING THE SAME
    Publication number: 20150002782
    Abstract: A backlight unit includes a light source which emits light, a light guide plate which receives the light through an incident surface thereof and guides the light, and a back cover which accommodates the light source and is coupled to the light guide plate such which the incident surface is disposed in an inner space thereof, where an air guide area is defined between the light source and the light guide plate in the inner space, and the back cover includes an inclined surface inclined to the incident surface of the light guide plate in the air guide area.
    Type: Application
    Filed: November 8, 2013
    Publication date: January 1, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Heugon KIM, JooYoung KIM, Hyoung-Joo KIM, Hayoung LEE, Joo Woan CHO
  • BACKLIGHT ASSEMBLY
    Publication number: 20140347887
    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: August 13, 2014
    Publication date: November 27, 2014
    Inventors: Joo-Woan CHO, Sung-Kyu SHIM, Sang-Hoon LEE, Joo-Young KIM, Taek-Sun SHIN, Jin-Hee PARK, Kwang-Wook CHOI
  • Backlight assembly
    Patent number: 8840293
    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: January 2, 2014
    Date of Patent: September 23, 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
  • Backlight assembly, liquid crystal display having the backlight assembly and method of manufacturing the liquid crystal display
    Patent number: 8836892
    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: Grant
    Filed: July 30, 2009
    Date of Patent: September 16, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se-Ki Park, Joo-Woan Cho, Ho-Sik Shin
  • TOUCH SCREEN DISPLAY APPARATUS HAVING IMPROVED SUPPORT FOR BOTH TOUCH SCREEN AND DISPLAY PANELS
    Publication number: 20140253823
    Abstract: A display apparatus includes a receiving container, a backlight assembly, a display panel, a touch screen assembly, a first mold frame, and a second mold frame. The receiving container includes a bottom portion and side walls that extend from the bottom portion, and the backlight assembly is contained in the receiving container to generate light. The display panel is positioned to receive light from the backlight assembly to display an image, and the touch screen assembly is disposed on the display panel to detect a touch event occurring thereon. The first mold frame is coupled to the receiving container to support a first edge part of the display panel. In addition, the second mold frame is spaced apart from the display panel, and coupled to the first mold frame, so as to be configured to support a second edge part of the touch screen assembly.
    Type: Application
    Filed: August 16, 2013
    Publication date: September 11, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Sanga AN, Yongwoo KIM, Joo Woan CHO, In-Su BAEK
  • Display apparatus
    Patent number: 8816954
    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 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: Grant
    Filed: February 24, 2010
    Date of Patent: August 26, 2014
    Assignee: Samsung Display Co., Ltd
    Inventors: Ho-Sik Shin, Gicherl Kim, Joo Woan Cho, Dae-Seop Kim, Young-Min Park
  • Liquid crystal display module, display device set including the same, and method of assembling liquid crystal display module
    Patent number: 8797478
    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: March 15, 2013
    Date of Patent: August 5, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo-Woan Cho, Se-Ki Park, Seong-Sik Choi
  • Backlight assembly and display apparatus having the same
    Patent number: 8770820
    Abstract: A display apparatus includes a light guide plate guiding a light, a light source arranged in a side portion of the light guide plate to generate the light, a display panel receiving the light from the light guide plate to display an image, a frame including a sidewall and a support part extended from the sidewall to support the display panel, and an optical member arranged between the light guide plate and the display panel to control a path of the light exiting from the light guide plate. The optical member includes a first side portion and a second side portion, a side surface of the first side portion faces a side surface of the support part, and the second side portion is positioned between the support part and the light guide plate.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: July 8, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo Woan Cho, YongWoo Lee
  • LIQUID CRYSTAL DISPLAY MODULE, DISPLAY DEVICE SET INCLUDING THE SAME, AND METHOD OF ASSEMBLING LIQUID CRYSTAL DISPLAY MODULE
    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