Patents by Inventor Jin-seung Choi

Jin-seung 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: 20120087692
    Abstract: A surface heating type heating unit for a fixing device, and a fixing device and an image forming apparatus including the same. The surface heating type heating unit includes a planar heating element on an outer circumferential surface of a supporter having cylindrical shape, a power feeding terminal at each end of the supporter, and a connector disposed between the planar heating element and the power feeding terminal. The connector is formed on a first region on the power feeding terminal, and includes an adhesive material for adhering the planar heating element and the power feeding terminal, and a conductive material formed on a second region of the power feeding terminal excluding the first region.
    Type: Application
    Filed: October 5, 2011
    Publication date: April 12, 2012
    Applicant: SAMSUNG ELECTRONICS CO.,LTD.
    Inventors: Jin-seung Choi, Youn-gun Jung, O-hyun Beak, Soo-hwan Bae, Young-hoon Han, Su-in Lee, Eun-bong Han
  • Patent number: 8051561
    Abstract: A method of manufacturing an image drum includes fixing a control circuit board inside the drum body so that a plurality of terminals of the control circuit board are located in the slot formed longitudinally on the drum body, forming an insulation layer to the entire external surface of the drum body, forming connection parts by removing parts of the insulation layer where the terminals of the control circuit board are formed, forming electrode forming grooves including the insulation layer as a base on the external surface of the drum body comprising the connection parts thereon, and forming a plurality of ring electrodes to be connected to respective terminals among the plurality of the terminals, respectively, through the connection parts.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: November 8, 2011
    Assignees: Samsung Electronics Co., Ltd., Samsung Electro-Mechanics Co., Ltd.
    Inventors: Eung-yeoul Yoon, Kae-dong Back, Kyu-ho Shin, Jin-seung Choi
  • Patent number: 8013349
    Abstract: A method of manufacturing a light emitting device includes: forming a plurality of independent light emitting portions on a growth substrate; separating the light emitting portions from the growth substrate; mounting the light emitting portions onto a receiving substrate; and dicing the receiving substrate, onto which the light emitting portions are mounted, into a light emitting unit. Residual stress, which occurs when the light emitting portions are separated from the substrate, can be reduced, and the light emitting portions can be mounted onto the receiving substrate in a fluid state, whereby the light emitting device can be easily mass produced with excellent quality, and its manufacturing costs can be reduced.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: September 6, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung Tae Choi, Hyun Soo Kim, Jin Seung Choi, Suk Jin Ham, Ki Hwan Kwon, Chang Youl Moon
  • Publication number: 20110013955
    Abstract: Disclosed are a heating member having a resistive heating layer and a fusing device using the heating member. The heating member includes the resistive heating layer on an outer circumferential surface of a load support member. Electricity is supplied to an inner circumferential surface and an outer circumferential surface of the resistive heating layer in a direction perpendicular to the resistive heating layer.
    Type: Application
    Filed: May 18, 2010
    Publication date: January 20, 2011
    Applicant: SAMSUNG ELECTRONICS CO. LTD.
    Inventors: Jin-Seung Choi, Seung-Jin Ho, Young-Chul Ko
  • Patent number: 7859731
    Abstract: An illumination apparatus and method for a display device designed such that light is incident on a hologram or hologram pattern at an angle for which diffraction efficiency is the highest. The illumination apparatus includes at least one point light source which emits light and a light guide plate (LGP) which has the at least one point light source disposed on a side thereof and a hologram pattern on a top surface which permits the light incident from the point light source to exit from the top surface. The side of the LGP facing the point light source is inclined such that the light is incident obliquely on the hologram pattern at an altitude angle which provides high diffraction efficiency.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: December 28, 2010
    Assignee: Sumsung Electronics Co., Ltd.
    Inventor: Jin-Seung Choi
  • Patent number: 7717603
    Abstract: A light guide plate having a multi-periodic micro pattern, which can minimize chromatic dispersion, and an illumination apparatus for a display device employing the light guide plate are provided. The light guide plate includes a top surface and a micro pattern formed on the top surface and allowing light, which is incident from a first side surface of the light guide plate, to be emitted from the top surface. The micro pattern is a combination of at least two periodic patterns having different periods to reduce chromatic dispersion of light emitted from the top surface.
    Type: Grant
    Filed: November 28, 2005
    Date of Patent: May 18, 2010
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jin-hwan Kim, Hong-seok Lee, Jin-Seung Choi, Jee-hong Min, Jae-ho You, Kyung-yeup Kim, Su-mi Lee, Yoon-sun Choi
  • Patent number: 7661868
    Abstract: A diffuser sheet which compensates for chromatic dispersion generated in a hologram light guide plate, and an illumination apparatus employing the diffuser sheet are provided. The diffuser sheet includes a plate type light-transmissive substrate and a light diffusion layer disposed on a light emission surface of the light-emission substrate. A light-incident surface of the light-transmissive substrate has declined surfaces and flat surfaces which are alternatively and repeatedly formed thereon. The declined surfaces are declined at a predetermined angle.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: February 16, 2010
    Assignee: Samsung Electro-Mechanics Co., Ltd
    Inventors: Jin-hwan Kim, Jin-Seung Choi, Jee-hong Min, Jae-ho You, Su-mi Lee, Yoon-sun Choi
  • Publication number: 20100020153
    Abstract: Provided are an image drum and a method of manufacturing the image drum. The image drum includes multiple ring electrodes arranged along a longitudinal direction of a drum body and on an outer circumferential surface of the drum body. The ring electrodes are separated from each other. Between the ring electrodes there are ring insulator molds. The image drum can be manufactured by patterning a seed layer on the outer surface of the drum body, forming multiple ring insulator molds on the seed layer, and depositing a conductive material between the ring insulator molds to form the ring electrodes.
    Type: Application
    Filed: May 8, 2009
    Publication date: January 28, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: EUNG-YEOUL YOON, Kae-Dong Back, Jin-Seung Choi
  • Patent number: 7573543
    Abstract: Provided are a light guide panel and a display device employing the same. The light guide panel includes: an incidence surface facing a plurality of light sources separated apart a predetermined distance; at least one dark portion reducing unit that is formed on the incidence surface between adjacent pairs of the slight sources and at both edges of the incidence surface, and reflects the light incident from the light sources to reduce the creation of dark portion units; an upper surface transmitting a portion of incident light and reflecting the rest of the incident light; and a lower surface facing the upper surface and reflecting the light incident from the incidence surfaces and dark portion reducing units.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: August 11, 2009
    Assignee: Samsung Electro-Mechanics Co., Ltd
    Inventors: Jin-seung Choi, Jee-hong Min, Jin-Hwan Kim
  • Publication number: 20090145317
    Abstract: A method of fabricating an image forming element includes preparing an image drum, transferring conductive ink as a pre-form of a plurality of ring electrodes on an outer circumference of the image drum using an imprinting process, solidifying the conductive ink on the outer circumference of the image drum to form the plurality of ring electrodes, and forming an outer insulating layer on the outer circumference of the image drum having the plurality of ring electrodes.
    Type: Application
    Filed: May 20, 2008
    Publication date: June 11, 2009
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Kyu-ho SHIN, Eung-yeoul Yoon, Jin-seung Choi, Kahp-yang Suh, Moon-kyu Kwak
  • Publication number: 20090119917
    Abstract: A method of manufacturing an image drum includes fixing a control circuit board inside the drum body using a fixing member so that a plurality of terminals of the control circuit board are located in the slot formed longitudinally on the drum body, forming an insulation layer by applying a sensitizer to the entire external surface of the drum body, forming connection parts by removing parts of the insulation layer where the terminals of the control circuit board are formed using photolithography processing, forming electrode forming grooves including the insulation layer as a base on the external surface of the drum body comprising the connection parts thereon, and forming a plurality of ring electrodes to be connected to respective terminals among the plurality of the terminals, respectively, through the connection parts by applying a fluent conductive substance to the external surface of the drum body comprising the electrode forming grooves thereon, and by filling the electrode forming grooves with the flu
    Type: Application
    Filed: June 5, 2008
    Publication date: May 14, 2009
    Applicants: Samsung Electronics Co., Ltd., Samsung Electro-Mechanics Co., Ltd.
    Inventors: Eung-yeoul YOON, Kae-dong BACK, Kyu-ho SHIN, Jin-seung CHOI
  • Publication number: 20090092927
    Abstract: A method of fabricating an image drum includes preparing a hollow drum body having a slot extending in a longitudinal direction, preparing a printed circuit board (PCB) having a plurality of board terminals, mounting the PCB inside the hollow drum body with a fixing member such that the board terminals of the PCB are placed in the slot of the hollow drum body, coating a first insulating layer on an outer circumference of the hollow drum body, forming a plurality of ring electrodes on the first insulating layer corresponding to the board terminals of the PCB, in which a portion of ring electrodes which corresponds to the board terminals of the PCB is non-continuous, exposing the board terminals below non-continuous area of the ring electrodes by etching the first insulating layer with the ring electrodes as an etching mask, and forming a connecting electrode to electrically connect the board terminals to the ring electrodes.
    Type: Application
    Filed: June 23, 2008
    Publication date: April 9, 2009
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Jin-seung Choi, Eung-yeoul Yoon, Kyu-ho Shin
  • Patent number: 7514718
    Abstract: An LED package includes a substrate, an LED, and a cap. The substrate includes a first conductor unit, a second conductor unit, and a non-conductor unit which electrically insulates the first and second conductor unit. The LED is bonded to the first conductor unit. The cap is mounted on the substrate over the LED and comprises a conductive wire which connects the LED to the second conductor unit.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: April 7, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyu-ho Shin, Su-ho Shin, Soon-cheol Kweon, Chang-youl Moon, Jin-seung Choi
  • Patent number: 7440153
    Abstract: A backlight unit for a flat panel display and a flat panel display apparatus having the same. The backlight unit for a flat panel display includes a light source emitting light, a light guide panel having an incident surface facing the light source and totally reflecting light incident through the incident surface toward the flat panel display, a holographic pattern that is formed at at least one of an exit surface of the light guide panel or the opposing surface with a predetermined grating period and diffracts light incident into the light guide panel and a dot pattern containing a plurality of particles dispersed on the holographic pattern at intervals shorter than the grating period and scattering incident light.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: October 21, 2008
    Assignee: Samsung Electro-Mechanics Co., Ltd
    Inventors: Su-mi Lee, Jin-Seung Choi, Jee-hong Min, Jin-hwan Kim, Yoon-sun Choi
  • Publication number: 20080171256
    Abstract: A direct alcohol fuel cell (DAFC) that uses methanol or ethanol as a fuel includes a membrane electrode assembly in which an anode, an electrolyte membrane, and a cathode are stacked, a fuel chamber in which alcohol is stored, and a fuel supply system that supplies the alcohol to the anode from the fuel chamber, wherein the fuel supply system comprises: a spreader that allows the alcohol received from the fuel chamber to be uniformly distributed with respect to an entire surface of the anode; a supply control unit that controls the supply of the alcohol from the fuel chamber to an inlet of the spreader; and a buffer installed between the spreader and the anode to limitedly pass alcohol towards the anode. Accordingly, the DAFC can reduce unnecessary fuel consumption during a shutdown operation and can stably and uniformly supply fuel during a normal operation.
    Type: Application
    Filed: September 18, 2007
    Publication date: July 17, 2008
    Applicant: Samsung SDI Co., Ltd
    Inventors: SANG-KYUN KANG, Eung-yeoul Yoon, Jin-seung Choi, Hye-yeon Cha, Joon-hee Kim
  • Publication number: 20080171558
    Abstract: The present invention relates to a location-based service method and system using location data included in image data, particularly to a method and a system of providing the location-based service with photos taken by a camera phone, using location information at the shooting time. The location-based service method according to the present invention, using the image data provided using a terminal equipped with a camera and the location data including the location information of the terminal, comprises the steps of shooting a target image with the terminal at a predetermined location and generating first image data; receiving the location data; including the received location data in the first image data and generating second image data; and displaying an image corresponding to the first image data and providing a service using the location data, if the second image data are selected.
    Type: Application
    Filed: April 19, 2006
    Publication date: July 17, 2008
    Applicant: SK TELECOM CO., LTD.
    Inventors: Jin-Seung Choi, Jae-Chul Lim, Jae-Bum Park, Hong-Keun JI, Jong-Ho Kim, Do-Wan Kim, Hyun-Jun Oh, Dong-Won Na, Won-Hee Sull
  • Publication number: 20080136889
    Abstract: An image forming element and its manufacturing apparatus and method are disclosed, in which manufacturing process steps can be simplified to reduce the cost and improve productivity. The manufacturing method of an image forming element includes respectively providing a mold and an image drum, forming line shaped conductive paste patterns on the mold, and transferring the conductive paste patterns from the mold onto the image drum.
    Type: Application
    Filed: April 13, 2007
    Publication date: June 12, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Eung-Yeoul Yoon, Kae Dong Back, Kyu Ho Shin, Jin Seung Choi, Soon Cheol Kweon, Su Ho Shin, Ki Hwan Kwon, Chang Youl Moon
  • Publication number: 20080131175
    Abstract: An image forming element includes an image drum including a plurality of ring electrodes and a slot. The plurality of ring electrodes are formed to be spaced apart from one another on a circumference of the image drum. The slot is formed in a longitudinal direction on the image drum. A connecting member includes a plurality of connecting electrodes and is disposed inside the image drum so that an end of the connecting member is received in the slot. The connecting electrodes are electrically connected with the ring electrodes one to one on the same line.
    Type: Application
    Filed: April 13, 2007
    Publication date: June 5, 2008
    Applicant: SAMSUNG ELECTRONICS., LTD.
    Inventors: Su Ho Shin, Kyu Ho Shin, Chang Youl Moon, Eung Yeoul Yoon, Jin Seung Choi, Ki Hwan Kwon
  • Patent number: 7364340
    Abstract: A backlight unit for a flat panel display and a flat panel display apparatus having the same. The backlight unit for a flat panel display displaying a predetermined image includes: a light source which emits light; a light guide panel having an incident surface facing the light source and which totally reflects light incident through the incident surface toward the flat panel display; and a holographic pattern that includes a plurality of diffraction gratings that are continuously repeated on at least one of an exit surface of the light guide panel and the opposing surface and diffracts light incident into the light guide panel. A depth of the diffraction grating progressively increases away from the incident surface along a length direction of the light guide panel.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: April 29, 2008
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Yoon-sun Choi, Jin-Seung Choi, Jee-hong Min, Jin-hwan Kim, Su-mi Lee
  • Publication number: 20080023687
    Abstract: A method of manufacturing a light emitting device includes: forming a plurality of independent light emitting portions on a growth substrate; separating the light emitting portions from the growth substrate; mounting the light emitting portions onto a receiving substrate; and dicing the receiving substrate, onto which the light emitting portions are mounted, into a light emitting unit. Residual stress, which occurs when the light emitting portions are separated from the substrate, can be reduced, and the light emitting portions can be mounted onto the receiving substrate in a fluid state, whereby the light emitting device can be easily mass produced with excellent quality, and its manufacturing costs can be reduced.
    Type: Application
    Filed: November 15, 2006
    Publication date: January 31, 2008
    Inventors: Seung Tae Choi, Hyun Soo Kim, Jin Seung Choi, Suk Jin Ham, Ki Hwan Kwon, Chang Youl Moon