Patents by Inventor Dong Choi

Dong 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).

  • Patent number: 8564194
    Abstract: An organic light emitting diode device includes a gate electrode of a first transistor on a substrate; a gate insulation film on the gate electrode of the first transistor; a source electrode of a second transistor on the gate insulation film and overlapping with the gate electrode of the first transistor; a contact hole exposing the gate electrode of the first transistor and the source electrode of the second transistor; a conductive wiring in the contact hole, for electrically connecting the gate electrode of the first transistor and the source electrode of the second transistor.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: October 22, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Hee-Dong Choi, Jae-Hee Park
  • Patent number: 8521228
    Abstract: A standby mode screen display method for a mobile terminal capable of receiving and displaying a multimedia broadcast program and a mobile terminal thereof, includes a broadcast receiving module for receiving a multimedia broadcast program, a user input unit for inputting at least one search identifier associated with searching multimedia broadcast programs and a display mode identifier, a controller for comparing the search identifier with program guide information associated with multimedia broadcast programs to find a matching multimedia broadcast program received wirelessly from a remote location, and a display unit for displaying, as a standby mode screen, the matching multimedia broadcast program on the mobile terminal in accordance with the display mode identifier.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: August 27, 2013
    Assignee: LG Electronics Inc.
    Inventor: Kyung-Dong Choi
  • Patent number: 8455874
    Abstract: A method of manufacturing a display device includes forming a gate electrode on a substrate, a gate insulating layer on the gate electrode, and an active layer on the gate insulating layer, the gate electrode made of extrinsic polycrystalline silicon, the active layer made of intrinsic polycrystalline silicon; forming an etch stopper on the active layer; forming source and drain electrodes spaced apart from each other on the etch stopper; forming an ohmic contact layer each between a side of the active layer and the source electrode and between an opposing side of the active layer and the drain electrode; forming a gate line connected to the gate electrode; and forming a data line crossing the gate line.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: June 4, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Hee-Dong Choi, Seong-Moh Seo
  • Patent number: 8441178
    Abstract: A display substrate, an organic light emitting diode display device having the same, and a manufacturing method thereof are disclosed. The display substrate includes a first pixel separating portion and a second pixel separating portion extending from the pixel separating portion and disposed around a pixel portion. Therefore, the number of processes for forming the organic light emitting diode display device can be reduced, and corrosion of a first electrode of the organic light emitting diode display device can be prevented.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: May 14, 2013
    Assignee: LG Display Co., Ltd.
    Inventor: Hee Dong Choi
  • Patent number: 8440483
    Abstract: A method of fabricating an array substrate including forming a first metal layer; forming a gate insulating layer and an active layer; forming a second metal layer; forming a gate line, an etch-stopper and a gate electrode by patterning the first and second metal layers; forming an interlayer insulating layer including an opening, wherein the opening corresponds to the etch-stopper such that the opening is divided into first and second semiconductor contact holes respectively exposing both sides of the active layer; forming first and second ohmic contact layers, a source electrode, a drain electrode and a data line, the first and second ohmic contact layers respectively contacting both sides of the active layer through the first and second semiconductor contact holes; removing an exposed portion of the etch-stopper; and forming a pixel electrode contacting the drain electrode.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: May 14, 2013
    Assignee: LG Display Co., Ltd
    Inventor: Hoo-Dong Choi
  • Publication number: 20130071963
    Abstract: A thin film transistor fabrication method allows forming a first photoresist pattern on a triple layer of insulation, conductive and metal films opposite to a semiconductor pattern. A first metal pattern and a conductive pattern are formed through an etch process before forming source and drain regions through a first ion injection process. A second photoresist pattern with a narrower width than that of the first photoresist pattern is derived from the first photoresist pattern. The first metal pattern is reformed into a second metal pattern with a narrower width than that of the second photoresist pattern. A process is performed that includes removing the second photoresist pattern, forming LDD (Lightly Doped Drain) regions in the semiconductor pattern, and forming GOLDD (Gate Overlap LDD) regions in the semiconductor pattern. A second insulation film is formed before forming source and drain electrodes on the second insulation film.
    Type: Application
    Filed: September 12, 2012
    Publication date: March 21, 2013
    Inventor: Hee Dong CHOI
  • Publication number: 20130068877
    Abstract: An existing bottom-adjustable propeller-type flying object requires a device having a complex structure constructed through the combination of various components such as a servo, a control plate, and a hinge to control the rotor pitch at every moment and operate an adjustable blade for flight control. The bottom-adjustable propeller-type flying object of the disclosure includes a circular frame with a fixing plate and a protective plate installed at a lower portion of a shaft of a power propeller mounted to the central shaft, and an adjusting motor having an adjustable propeller. The flying object moves up or down by using force of the wind generated downward due to the rotation of the power propeller. The flying object makes a hovering flight, and leftward, rightward, forward, and backward flights by using the force of the wind generated due to the rotation of the adjustable propellers mounted on two adjusting motors.
    Type: Application
    Filed: May 3, 2011
    Publication date: March 21, 2013
    Applicant: SUNTECH ENTERPRISES
    Inventors: Key Dong Choi, Key Nam Choi
  • Patent number: 8400519
    Abstract: A mobile terminal and a method of controlling the operation of the mobile terminal are provided. The method includes setting a first image as a reference image; if an image comparison mode is selected, operating a camera in a close-up photography mode; displaying a preview image currently being provided by the camera on a display module; and if the preview image is chosen to be captured, displaying a comparison result screen showing differences between the first image and a second image obtained by capturing the preview image on the display module. Therefore, it is possible for a user to easily identify the differences between the first and second images from the comparison result screen.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: March 19, 2013
    Assignee: LG Electronics Inc.
    Inventor: Kyung Dong Choi
  • Publication number: 20130049003
    Abstract: An OLED device is disclosed. The OLED device includes: a substrate defined into an active area in which a plurality of pixels are formed in a matrix shape, a GIP (gate-in-panel) area in which drive elements are formed, a ground contact area, and a seal line area; a thin film transistor formed in each pixel region within the active area; an organic light emission diode formed on a protective film and configured to include a first electrode, an organic light emission layer and a second electrode; a bank layer formed to divide the organic light emission diode into pixel units; a signal wiring formed in the ground contact area and the seal line area; and an extended portion formed from the same material as the first electrode of the organic light emission diode and configured to cover the signal wiring.
    Type: Application
    Filed: December 29, 2011
    Publication date: February 28, 2013
    Inventors: Hee Dong Choi, Seung Joon Jeon
  • Patent number: 8360549
    Abstract: An inkjet image forming apparatus and a spitting method therefor. The inkjet image forming apparatus includes: a printhead including a plurality of nozzles arranged across a printing medium transfer path; a maintenance unit including a spitting groove to receive ink ejected during a spitting operation of the printhead; and a controlling unit to control the printhead so that spitting is performed by groups of the nozzles, when each group faces the spitting groove.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: January 29, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Hyoung-dong Choi
  • Publication number: 20130009154
    Abstract: An array substrate for an organic electroluminescent display device includes a substrate including a display area and a non-display area; a gate line and a data line; a thin film transistor including a semiconductor layer of polycrystalline silicon, a gate insulating layer, a gate electrode, an inter insulating layer, a source electrode, and a drain electrode; auxiliary lines formed of a same material and on a same layer as the data line; a passivation layer of organic insulating material and including a drain contact hole exposing the drain electrode, and an auxiliary line contact hole exposing one of the auxiliary lines; and a first electrode and a line connection pattern on the passivation layer, wherein the first electrode contacts the drain electrode and the line connection pattern contacts the one of the first auxiliary pattern.
    Type: Application
    Filed: December 28, 2011
    Publication date: January 10, 2013
    Inventors: Hee-Dong CHOI, Seung-Joon JEON
  • Patent number: 8329523
    Abstract: A method of fabricating an array substrate for a display device includes: forming a buffer layer on a substrate having a pixel region; sequentially forming a gate electrode of impurity-doped polycrystalline silicon, a gate insulating layer and an active layer of intrinsic polycrystalline silicon on the buffer layer in the pixel region; forming an interlayer insulating layer of an inorganic insulating material on the active layer; sequentially forming a source barrier pattern, a source ohmic contact layer and a source electrode on the interlayer insulating layer, sequentially forming a drain barrier pattern, a drain ohmic contact layer and a drain electrode on the interlayer insulating layer, and sequentially forming a first dummy pattern, a second dummy pattern and a data line on the interlayer insulating layer; forming a first passivation layer on a surface of the interlayer insulating layer including the source electrode, the drain electrode and the data line formed thereon; forming a gate line on the first
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: December 11, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Hee-Dong Choi, Ki-Sul Cho, Hye-Young Choi, Doo-Seok Yang, Byeong-Gyu Roh
  • Publication number: 20120281953
    Abstract: An optical electrical hybrid cable for transmitting an optical signal and an electrical signal simultaneously is provided. The optical electrical hybrid cable includes a fiber-optic cable disposed in the center of the optical electrical hybrid cable, and including a plurality of tubes each of which comprises a plurality of optical fibers operatively mounted in an inner space thereof, and a first binder disposed around the plurality of tubes, a plurality of power cables disposed around the fiber-optic cable, each of the power cables comprising a plurality of conducting wires, and a second binder disposed around the plurality of power cables.
    Type: Application
    Filed: May 2, 2012
    Publication date: November 8, 2012
    Applicant: SEHF-KOREA CO., LTD.
    Inventors: Han-Dong CHOI, Ho-Soon LEE
  • Publication number: 20120256973
    Abstract: The organic light emitting display device includes an organic light emitting display panel and a data driver, wherein the organic light emitting display panel includes an active region which includes pixel driving TFTs for embodying an image and organic luminescent elements respectively connected with the pixel driving TFTs to emit light, a GIP region which includes a gate driver formed with a plurality of gate driving TFTs for respectively driving gate lines of the active region, a GND region formed between the GIP region and the active region to be formed with a base voltage line for supplying base voltage to the organic luminescent elements of the active region, and a sealant region formed with a sealant for attaching an upper substrate to a lower substrate, and wherein the GND region includes out-gassing blocking holes.
    Type: Application
    Filed: December 27, 2011
    Publication date: October 11, 2012
    Inventors: Hee-Dong Choi, Sam-Min Ko
  • Patent number: 8222638
    Abstract: An array substrate for an organic electroluminescent device includes a substrate; first and second gate electrodes; first and second gate insulating layers; first and second active layers; an interlayer insulating layer; first to fourth ohmic contact layers; first and second source electrodes; first and second drain electrodes; a data line connected to the first source electrode; a first power line connected to the second source electrode; a first passivation layer on the first and second source electrodes; a gate line contacting the first gate electrode; a second passivation layer on the gate line; a pixel electrode on the second passivation layer and contacting the second drain electrode; an organic luminescent layer on the pixel electrode; and a reference electrode on the organic luminescent layer, wherein portions of the pixel electrodes respectively contacting the organic luminescent layers in one pixel region and in another one pixel region have different heights from the substrate.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: July 17, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Hee-Dong Choi
  • Patent number: 8198631
    Abstract: Disclosed is a method of fabricating a display device that includes forming a buffer layer; forming a gate electrode of extrinsic polycrystalline silicon, a gate insulating layer, an active layer of intrinsic polycrystalline silicon and an auxiliary active layer of intrinsic amorphous silicon on the buffer layer; forming an ohmic contact layer of extrinsic amorphous silicon and contacting the auxiliary active layer, source and drain electrodes and a data line; patterning a first passivation layer, an insulating interlayer and the gate insulating layer to form a gate contact hole exposing the gate electrode; forming a gate line on the first passivation layer, made of a metal material, and contacting the gate electrode through the gate contact hole; forming a second passivation layer on the gate line; patterning the first and second passivation layers to form a drain contact hole exposing the drain electrode; and forming a pixel electrode on the second passivation layer in the pixel region and contacting the dr
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: June 12, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Hee-Dong Choi, Hye-Young Choi, Jun-Min Lee
  • Patent number: 8185163
    Abstract: A mobile communication device, method and computer program product for generating a first signal upon manipulation of a first input key that can be manipulated in at least two directions, generating a second signal upon manipulation of a second input key which enables at least two direction inputs, and controlling a predetermined operation in response to at least one of the first and second signals.
    Type: Grant
    Filed: March 10, 2008
    Date of Patent: May 22, 2012
    Assignee: LG Electronics Inc.
    Inventors: Jee Young Cheon, Kyung Dong Choi
  • Patent number: 8178879
    Abstract: An array substrate for a display device includes a gate electrode on a substrate; a gate insulating layer on the gate electrode and having the same plane area and the same plane shape as the gate electrode; an active layer on the gate insulating layer and exposing an edge of the gate insulating layer; an interlayer insulating layer on the active layer and including first and second active contact holes, the first and second active contact holes respectively exposing both sides of the active layers; first and second ohmic contact layers contacting the active layer through the first and second active contact holes, respectively; a source electrode on the first ohmic contact layer; a drain electrode on the second ohmic contact layer; a data line on the interlayer insulating layer and connected to the source electrode; a first passivation layer on the source electrode, the drain electrode and the data line, the first passivation layer, the interlayer insulating layer and the gate insulating layer have a first gat
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: May 15, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Hee-Dong Choi, Seong-Moh Seo
  • Publication number: 20120104405
    Abstract: A method of fabricating an array substrate for an organic electroluminescent device includes forming a semiconductor layer of polysilicon in an element region, and a semiconductor pattern of polysilicon in a storage region on a substrate; forming a multiple-layered gate electrode corresponding to a center portion of the semiconductor layer and a first storage electrode corresponding to the semiconductor pattern; performing an impurity-doping to make a portion of the semiconductor layer not covered by the gate electrode into an ohmic contact layer and make the semiconductor pattern into a second storage electrode; forming source and drain electrodes and a third storage electrode corresponding to the first storage electrode; forming a first electrode contacting the drain electrode and a fourth storage electrode corresponding to the third storage electrode.
    Type: Application
    Filed: October 31, 2011
    Publication date: May 3, 2012
    Inventors: Hee-Dong CHOI, Ki-Sul Cho, Seong-Moh Seo
  • Publication number: 20120104399
    Abstract: A method of fabricating an array substrate for an organic electroluminescent display device includes forming a semiconductor layer, a semiconductor dummy pattern, a first storage electrode and a first gate insulating layer on a substrate; forming a second gate insulating layer on the semiconductor layer and the first storage electrode; forming a gate electrode and a second storage electrode on the second gate insulating layer; forming ohmic contact layers by doping impurities into both sides of the semiconductor layer; forming an inter insulating layer on the gate electrode and the second storage electrode; forming source and drain electrodes and a third storage electrode on the inter insulating layer; forming a passivation layer on the source and drain electrodes and the third storage electrode; forming a first electrode and a fourth storage electrode on the passivation layer; and forming a spacer and a bank on the first electrode.
    Type: Application
    Filed: October 31, 2011
    Publication date: May 3, 2012
    Inventors: Hee-Dong CHOI, Jin-Chae Jeon, Seung-Joon Jeon, Hoe-Yong Kim