Patents by Inventor Don-Chan Cho

Don-Chan 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).

  • Patent number: 7834953
    Abstract: A light unit includes a light emitting chip emitting light, a light conversion layer disposed on the light emitting chip, and the light conversion layer including a resin layer and semiconductor particles distributed on the resin layer, and a buffer layer interposed between the light emitting chip and the light conversion layer.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: November 16, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hae-Il Park, Jin-Seob Byun, Jae-Byung Park, Sung-Jin Hong, Don-Chan Cho
  • Patent number: 7819539
    Abstract: A light emitting diode (LED). In one embodiment, the LED comprises a base including a cavity, an LED chip disposed on a bottom of the cavity and configured to generate a first light, and a light conversion layer. The light conversion layer includes an upper substrate, a lower substrate and a wavelength conversion particle. The light conversion layer is configured to convert a portion of the first light into a second light according to light emitted by the wavelength conversion particle. Furthermore, the light conversion layer is disposed on an upper surface of the base.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: October 26, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Gun-Woo Kim, Jae-Byung Park, Don-Chan Cho, Hae-Il Park, Jin-Seob Byun, Jung-Han Shin, Seon-Tae Yoon, Sung-Jin Hong
  • Publication number: 20100225993
    Abstract: A light guide unit includes a light guide plate and a plurality of light-exiting protrusions. The light guide plate includes a light-entering surface, an upper surface connected to the light-entering surface and a lower surface facing the upper surface. The light-exiting protrusions protrude from the upper surface of the light guide plate to have a cylindrical shape in which a cross-section size thereof increases in a direction away from the upper surface of the light guide plate, the light-exiting protrusions being disposed in a light control area which is turned on or off by a microelectromechanical system shutter. Light guided by the light guide unit to the light control area exits through the light-exiting protrusions.
    Type: Application
    Filed: August 4, 2009
    Publication date: September 9, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Don-Chan CHO, Hyun-Min CHO, Seul LEE, Jae-Byung PARK
  • Patent number: 7782422
    Abstract: In a display panel and a display device having the display panel, the display device has a first pixel area, a second pixel area, a third pixel area and a fourth pixel area. A red fluorescent member, a green fluorescent member and a yellow fluorescent member are formed in the first pixel area, the second pixel area and the third pixel area. The red fluorescent member emits a red light by using a blue light incident thereon. The green fluorescent member emits a green light by using a blue light incident thereon. The yellow fluorescent member emits a white light by using a blue light incident thereon. A blue light incident on the fourth pixel area passes through the fourth pixel area so that the blue light is irradiated from the fourth pixel area.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: August 24, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Don-Chan Cho, Seok-Hyun Nam, Hyun-Jin Kim
  • Publication number: 20100155705
    Abstract: Provided are a display device, which has a longer life and can be fabricated simply relative to conventional display devices, and a method of fabricating the display device. The display device includes a substrate which includes first through third subpixel regions, first through third organic light-emitting transistors which are disposed in the first through third subpixel regions, respectively, and are operable to emit light of a first color, and a first fluorescent pattern which is formed on the first organic light-emitting transistor and is operable to cause light of a second color to be emitted.
    Type: Application
    Filed: August 18, 2009
    Publication date: June 24, 2010
    Inventors: Jung-Han Shin, Jae-Byung Park, Don-Chan Cho, Jin-Seob Byun, Hyoung-Joo Kim
  • Publication number: 20100123947
    Abstract: A flat panel display includes a first substrate, a thin film transistor formed on the first substrate, a second substrate facing the first substrate, and a light controller formed on the second substrate, wherein the light controller is electrically connected to the thin film transistor, wherein the light controller includes an opening plate having a plurality of first openings and a light blocker moving horizontally with respect to the opening plate to selectively pass light through the first openings.
    Type: Application
    Filed: August 3, 2009
    Publication date: May 20, 2010
    Inventors: DON-CHAN CHO, Jae-Byung Park, Jong-Hyuk Kang, Sung-Jin Hong, Yu-Kwan Kim, Seul Lee
  • 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
  • Publication number: 20100103648
    Abstract: A light emitting diode (LED). In one embodiment, the LED comprises a base including a cavity, an LED chip disposed on a bottom of the cavity and configured to generate a first light, and a light conversion layer. The light conversion layer includes an upper substrate, a lower substrate and a wavelength conversion particle. The light conversion layer is configured to convert a portion of the first light into a second light according to light emitted by the wavelength conversion particle. Furthermore, the light conversion layer is disposed on an upper surface of the base.
    Type: Application
    Filed: April 14, 2009
    Publication date: April 29, 2010
    Inventors: Gun-Woo KIM, Jae-Byung Park, Don-Chan Cho, Hae-Il Park, Jin-Seob Byun, Jung-Han Shin, Seon-Tae Yoon, Sung-Jin Hong
  • Publication number: 20100079704
    Abstract: A liquid crystal display includes, among others, a light diffusion layer comprising a color conversion media layer and a non-conversion layer arranged on the second substrate and a backlight assembly to supply light to the first substrate and the second substrate. The backlight assembly supplies various wavelengths of lights, including blue light or UV ray. The blue rights through the liquid crystal layer enters the color conversion media layers and may generates red lights and green lights. In this case, blue lights go through non-conversion layer and diffuse and scatter out blue lights. The UV rays through the liquid crystal layer enters the color conversion media layers and may generates red light, green lights and blue lights.
    Type: Application
    Filed: August 17, 2009
    Publication date: April 1, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Don-Chan CHO, Jae-Byung Park, Jin-Seob Byun, Hae-Il Park
  • Publication number: 20090213296
    Abstract: A light unit includes a light emitting chip emitting light, a light conversion layer disposed on the light emitting chip, and the light conversion layer including a resin layer and semiconductor particles distributed on the resin layer, and a buffer layer interposed between the light emitting chip and the light conversion layer.
    Type: Application
    Filed: November 5, 2008
    Publication date: August 27, 2009
    Inventors: Hae-Il Park, Jin-Seob Byun, Jae-Byung Park, Sung-Jin Hong, Don-Chan Cho
  • Publication number: 20090121628
    Abstract: An inorganic light emitting device includes a first emission layer that includes a first electrode, a first dielectric layer, a first sub-emission layer, a second dielectric layer and a first auxiliary electrode sequentially stacked on a substrate, a second emission layer that includes the first auxiliary electrode and a third dielectric layer, a second sub-emission layer, a fourth dielectric layer and a second auxiliary electrode sequentially stacked on the first auxiliary electrode, and a third emission layer that includes the second auxiliary electrode and a fifth dielectric layer, a third sub-emission layer, a sixth dielectric layer and a second electrode sequentially stacked on the second auxiliary electrode.
    Type: Application
    Filed: August 12, 2008
    Publication date: May 14, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Don-Chan CHO, Jae-Byung PARK, Hae-Il PARK, Jin-Seob BYUN
  • Publication number: 20090109517
    Abstract: A display device includes a first electrode, a second electrode facing the first electrode, a first layer of material disposed between the first electrode and the second electrode, a second layer of material disposed on the first layer of material, and a light source unit emitting blue light incident to the first electrode toward the second electrode. At least one color converting member receives the blue light and generate light having a wavelength different from the wavelength of the blue light. The second layer of material is positioned on the second electrode and is movable along with the second electrode by an attraction force between the first electrode and the second electrode.
    Type: Application
    Filed: August 8, 2008
    Publication date: April 30, 2009
    Inventors: Don-Chan CHO, Jae-Byung Park, Hae-II Park, Jin-Seob Byun, Sung-Jin Hong, Seul Lee
  • Publication number: 20090091239
    Abstract: A light-emitting chip includes a light-emitting part, a first color-converting part and a second color-converting part. The light-emitting part includes a first electrode and a second electrode, and generates first light of a first wavelength. The first color-converting part is formed on a light-emitting surface of the light-emitting part. The first color-converting part converts at least a portion of the first light into second light of a second wavelength. The second color-converting part is formed on the first color-converting part. The second color-converting part converts at least a portion of the first light into third light of a third wavelength that is shorter than the second wavelength. Thus, a fluorescent substance of a long wavelength and a fluorescent substance of a short wavelength are sequentially formed on a light-emitting surface of a light-emitting part, so that the color reproducibility of a light-emitting chip may be enhanced.
    Type: Application
    Filed: May 1, 2008
    Publication date: April 9, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Don-Chan CHO, Jae-Byung PARK, Hae-Il PARK, Jin-Seob BYUN, Sung-Jin HONG, Seul LEE
  • Publication number: 20090027882
    Abstract: A backlight assembly includes a light-generating unit and a receiving container. The light-generating unit includes at least one point light source generating light and a power supply line transferring power for driving the point light source. The receiving container receives the light-generating unit, and the power supply line is formed on an insulating layer included in the receiving container.
    Type: Application
    Filed: July 24, 2007
    Publication date: January 29, 2009
    Inventors: Gi-Cherl Kim, Don-Chan Cho, Young-Keun Lee
  • Patent number: 7330360
    Abstract: A DC-DC converter is provided, which includes a transformer including a primary coil and a secondary coil, a boost converter connected to the primary coil of the transformer and generating a first voltage, and a flyback converter connected to the secondary coil of the transformer and generating a second voltage.
    Type: Grant
    Filed: August 24, 2005
    Date of Patent: February 12, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Gil Lee, Don-Chan Cho, Jong-Seo Lee, Gi-Cherl Kim, Sang-Yu Lee
  • Publication number: 20070188080
    Abstract: A flat fluorescent lamp including a first substrate, a second substrate facing the first substrate to provide a discharge region having a plurality of discharge spaces and a non-discharge region encompassing the discharge region. Fluorescent layers are arranged on the first and second substrates, and a sealing member is arranged in the non-discharge region shielded from the discharge spaces, and it couples the first and second substrates together.
    Type: Application
    Filed: October 13, 2006
    Publication date: August 16, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hae-Il PARK, Jin-Seob BYUN, Sang-Yu LEE, Don-Chan CHO
  • Publication number: 20070188074
    Abstract: A flat fluorescent lamp and a display device including the same. The flat fluorescent lamp includes a lamp body that has a plurality of discharge spaces and generates light, electrodes that are formed at the both ends of the lamp body, and a plurality of cold spots that are formed on the rear surface of the lamp body.
    Type: Application
    Filed: July 27, 2006
    Publication date: August 16, 2007
    Inventors: Don-Chan Cho, Hae-Il Park, Jin-Seob Byun, Sang-Yu Lee
  • Publication number: 20070170858
    Abstract: A backlight assembly includes a flat fluorescent lamp and a bottom chassis. The flat fluorescent lamp includes a first substrate, a second substrate and an external electrode. The second substrate is combined with the first substrate to form a plurality of discharge spaces. The external electrode crosses the discharge spaces. The bottom chassis receives the flat fluorescent lamp and includes a protruded portion spaced apart from the flat fluorescent lamp by a distance that is different from a distance between a remaining portion of the bottom chassis and the flat fluorescent lamp.
    Type: Application
    Filed: September 29, 2006
    Publication date: July 26, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Don-Chan CHO, Hae-Il PARK, Jin-Seob BYUN, Sang-Yu LEE
  • Publication number: 20070170835
    Abstract: A flat fluorescent lamp includes a first substrate, a second substrate, a first fluorescent layer, a second fluorescent layer, a combining member and a contacting layer. The second substrate is combined with the first substrate to form a plurality of discharge chambers spaced apart from each other. The first fluorescent layer is formed on an inner surface of the first substrate, and the second fluorescent layer is formed on an inner surface of the second substrate. The combining member is disposed between the first substrate and the second substrate. The contacting layer is formed between the discharge chambers. Thus, mercury vapor in a flat fluorescent lamp may be prevented from migrating due to a temperature difference between discharge chambers, and luminescence characteristics of a flat fluorescent lamp may be improved.
    Type: Application
    Filed: October 3, 2006
    Publication date: July 26, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Don-Chan Cho, Hae-Il Park, Jin-Seob Byun, Sang-Yu Lee
  • Publication number: 20070159051
    Abstract: A flat fluorescent lamp includes a first substrate, a second substrate, a first exhausting pipe and a second exhausting pipe. The second substrate is combined with the first substrate and forms a plurality of discharge spaces. The first exhausting pipe is disposed at a first longitudinal end portion of the discharge spaces between the first and second substrates such that the first exhausting pipe crosses the discharge spaces. The first exhausting pipe has first exhausting holes. The second exhausting pipe is disposed at a second longitudinal end portion of the discharge spaces between the first and second substrates such that the second exhausting pipe crosses the discharge spaces. The second exhausting pipe has second exhausting holes.
    Type: Application
    Filed: July 13, 2006
    Publication date: July 12, 2007
    Inventors: Jin-Seob Byun, Don-Chan Cho