Patents by Inventor Hoon Chang

Hoon Chang 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: 20110248342
    Abstract: A semiconductor integrated circuit device and method of fabricating a semiconductor integrated circuit device, the method including preparing a first conductivity type substrate including a first conductivity type impurity such that the first conductivity type substrate has a first impurity concentration; forming a buried impurity layer using blank implant such that the buried impurity layer includes a first conductivity type impurity and has a second impurity concentration higher than the first impurity concentration; forming an epitaxial layer on the substrate having the buried impurity layer thereon; and forming semiconductor devices and a device isolation region in or on the epitaxial layer.
    Type: Application
    Filed: March 23, 2011
    Publication date: October 13, 2011
    Inventors: Yong-Don KIM, Hoon Chang, Seo-In Pak
  • Publication number: 20110149821
    Abstract: A method and system for managing an inactive interval of a Base Station (BS) are provided, in which the BS transmits a preferred Low-Duty Mode (LDM) pattern to a coordination server that manages LDM patterns of BSs, receives an LDM pattern from the coordination server, the LDM pattern being determined for the BS by the coordination server, taking into account the preferred LDM pattern and LDM patterns of neighbor BSs, and operates in an active interval and an inactive interval according to the received LDM pattern.
    Type: Application
    Filed: December 22, 2010
    Publication date: June 23, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Eun-Sil HONG, Hyeong-Jong Ju, Hyo-Jin Lee, Hoon Chang
  • Patent number: 7935992
    Abstract: A transistor, a display driver integrated circuit having the transistor, and a method for fabricating a transistor are provided. A transistor, according to example embodiments, may include a substrate with a device active region defined by an isolation layer, wherein the device active region may include a source active region, a channel active region, and a drain active region and the channel active region may include a pair of edges contacting the isolation layer. The transistor, according to example embodiments, may also include a gate electrode overlapping the channel active region, wherein the edges are exposed beyond a periphery of the gate electrode, a gate dielectric between the gate electrode and the channel active region, and source and drain impurity regions within the source and drain active regions.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: May 3, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Hoon Chang
  • Patent number: 7818027
    Abstract: A portable terminal is capable of large screen display and includes an apparatus for driving the same. The portable terminal includes a first display panel unit for displaying a first image, a second display panel unit for displaying a second image, a first and a second trajectory discs being positioned opposite each other at one side of the first display panel unit and formed with a plurality of trajectory grooves at one side thereof, and a folding slide door unit combined between the first display panel unit and the second display panel unit. The folding slide door unit is formed with guide protrusions respectively so as to be slidably inserted into the trajectory grooves of the first and the second trajectory discs at both lateral sides thereof, and includes a plurality of slide doors so as to be slidably folded along the trajectory grooves.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: October 19, 2010
    Assignee: Hana Micron
    Inventor: Young Hoon Chang
  • Publication number: 20100238738
    Abstract: An electrically erasable programmable read-only memory (EEPROM) includes an access transistor having a floating gate and source/drain regions formed at opposite sides of the floating gate in a first well, a first well tap formed in the first well, a control gate located on a second region, first impurity regions formed at both sides of the control gate in the second region, and a second well tap formed in a third region. In order to erase information stored in a memory cell, a predetermined erasing voltage is applied to the source/drain regions of the access transistor and the first well tap, a ground voltage is applied to the first impurity regions in the second region, and a voltage, which is greater than 0V and less than a junction breakdown voltage between the active area and the first well, is applied to the second well tap.
    Type: Application
    Filed: May 26, 2010
    Publication date: September 23, 2010
    Inventors: Seung-han Yoo, Hoon Chang
  • Publication number: 20100240724
    Abstract: The present invention relates to an edible film composition comprising a waxy starch hydrolysate, a modified starch and a water-soluble polymer, and an edible film comprising the same. The present edible film may not only have an excellent film forming property, solubility and feeling in the oral cavity, but also be easily prepared at low cost, and thus be usefully used as an oral cleanser or a bad breath remover for oral cleansing, and a soluble formulation on tongue for uptake of drug in the oral cavity.
    Type: Application
    Filed: September 25, 2008
    Publication date: September 23, 2010
    Applicant: C.L. PHARM
    Inventors: Seok Hoon Chang, Kyoung Tae Jung
  • Publication number: 20100224478
    Abstract: The present invention provides a (meth)acrylic acid collecting method for collecting a (meth)acrylic acid from a mixed gas that includes an organic byproduct, a steam, and a (meth)acrylic acid that are generated in a production reaction of the (meth)acrylic acid, which includes the steps of a) contacting the mixed gas that includes the organic byproduct, the steam, and the (meth)acrylic acid with a (meth)acrylic acid absorption solvent to obtain a gas that includes the organic byproduct and the steam and the (meth)acrylic acid containing solution while the gas and the (meth)acrylic acid containing solution are separated from each other; b) contacting the gas that includes the organic byproduct and the steam that are obtained in the step a with the organic byproduct absorption solvent to obtain the gas that includes the steam and the organic byproduct containing solution while the gas and the organic byproduct containing solution are separated from each other; c) supplying the gas that includes the steam that
    Type: Application
    Filed: October 23, 2008
    Publication date: September 9, 2010
    Inventors: Se-Won Baek, Kyoung-Su Ha, Sung-Kyoo Park, Jun-Seok Ko, Dong-Hyun Woo, Young-Bae Kim, Jung-Hoon Chang
  • Patent number: 7755135
    Abstract: An electrically erasable programmable read-only memory (EEPROM) includes an access transistor having a floating gate and source/drain regions formed at opposite sides of the floating gate in a first well, a first well tap formed in the first well, a control gate located on a second region, first impurity regions formed at both sides of the control gate in the second region, and a second well tap formed in a third region. In order to erase information stored in a memory cell, a predetermined erasing voltage is applied to the source/drain regions of the access transistor and the first well tap, a ground voltage is applied to the first impurity regions in the second region, and a voltage, which is greater than 0V and less than a junction breakdown voltage between the active area and the first well, is applied to the second well tap.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: July 13, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-han Yoo, Hoon Chang
  • Patent number: 7744831
    Abstract: Disclosed is an annular distributor having: an annular slit layer that is mounted on an inner circumferential surface of the annular distributor and has at least one slit discharging or introducing a fluid; at least one opening that is formed on an outer circumferential surface of the annular distributor and is connected with any one of a fluid supply duct and a fluid discharge duct; and at least one guide vane selected from three types of guide vanes that are installed in the annular distributor, and splits a flow rate of the fluid supplied from the duct or collects a flow rate of the fluid discharged to the duct. And disclosed are a reactor or heat exchanger has the annular distributor, and a method of producing unsaturated aldehyde or unsaturated acid from olefin by catalytic gas phase oxidation in the reactor.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: June 29, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Sang Baek Shin, Sang Phil Han, Ye Hoon Im, Young Bae Kim, Jung Hoon Chang
  • Patent number: 7695695
    Abstract: A shell-and-tube reactor or heat exchanger comprises first tubes, through the inside of which a first object for heat transfer with a heat transfer medium is passed, some of the first tubes being provided in a zone in which a flow of the heat transfer medium (parallel flow) parallel to the axis of the tubes is present; and a second tube, through the inside of which the first object is not passed, the second tube being provided in said zone such that it is parallel to the axis of the first tubes. A method for producing an oxide comprises using said shell-and-tube reactor or heat exchanger, and causing a catalytic vapor-phase oxidation reaction in first tubes, through the inside of which the first object for heat transfer with the heat transfer medium is passed.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: April 13, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Sang Baek Shin, Sang Phil Han, Ye Hoon Im, Young Bae Kim, Jung Hoon Chang, Sang Oeb Na, Won Am Lee
  • Publication number: 20100082177
    Abstract: Disclosed are a system and method with a cooperative control algorithm that can appraise voltage stability of a power system in cooperation with a supervisory control and data acquisition (SCADA)/emergency management system (EMS) for cooperative control on multiple parallel flexible alternating current transmission systems (FACTS) to enhance voltage stability, and that can calculate individual operation points of the FACTS.
    Type: Application
    Filed: November 26, 2008
    Publication date: April 1, 2010
    Applicant: Korea Electric Power Corporation
    Inventors: Byung Hoon Chang, Yong Hak Kim, Soo Yeol Kim, Jong Su Yoon, No Hong Kwak
  • Patent number: 7642757
    Abstract: A system and method for operating a Unified Power Flow Controller (UPFC) connected to a SCADA (Supervisory Control and Data Acquisition) are disclosed. The UPFC automatic operation system receives power system data from the SCADA system, automatically determines UPFC's optimum operation conditions according to power system states. The system includes: a UPFC acting as a serial/parallel FACTS to control variables of a power system; a SCADA for periodically acquiring line data of the power system and state data of the UPFC; and an upper controller for analyzing data received from the SCADA, and determining an UPFC's optimum operation mode for each power system condition and UPFC's optimum set-point control commands.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: January 5, 2010
    Assignee: Korea Electric Power Corporation
    Inventors: Jong-Soo Yoon, Seung-Pil Moon, Won-Kyo Lee, Chang-Gon Kim, Jin-Boo Choo, Young-Cheul Choi, Young-Soo Jeon, Byung-Hoon Chang, Soo-Yeol Kim
  • Publication number: 20090309161
    Abstract: A semiconductor integrated circuit device and a method of fabricating the same for increasing channel length while permitting the channel to remain stable. The semiconductor integrated circuit device includes a semiconductor substrate with lightly-doped impurity regions, a gate stack, and offset spacers. The gate stack includes an insulating layer formed on the semiconductor substrate and a gate electrode formed on the gate insulating layer. The offset spacers are formed of an insulating material having high dielectric constant on both sidewalls of the gate stack.
    Type: Application
    Filed: June 15, 2009
    Publication date: December 17, 2009
    Inventor: Hoon Chang
  • Publication number: 20090290085
    Abstract: A liquid crystal display device comprises: a first substrate and a second substrate facing and spaced apart from each other, the first substrate and the second substrate including an active area, a signal input area and a pad area, the signal input area and the pad area being disposed at a periphery of the active area; a gate line and a data line on the first substrate in the active area, the gate line and the data line crossing each other; first connection lines and second connection lines in the signal input area, the first connection lines extending to the pad area and crossing the second connection lines; a gate connection pattern contacting the first connection lines and the second connection lines; a common electrode on the second substrate; a shortage-preventing pattern on the common electrode and corresponding to the gate connection pattern; a seal pattern surrounding the active area, the seal pattern including a conductive ball; and a liquid crystal layer between the first and second substrates in th
    Type: Application
    Filed: August 3, 2009
    Publication date: November 26, 2009
    Inventors: Byung-Hoon Chang, Min-Jung Kim
  • Patent number: 7583350
    Abstract: A liquid crystal display device comprises: a first substrate and a second substrate facing and spaced apart from each other, the first substrate and the second substrate including an active area, a signal input area and a pad area, the signal input area and the pad area being disposed at a periphery of the active area; a gate line and a data line on the first substrate in the active area, the gate line and the data line crossing each other; first connection lines and second connection lines in the signal input area, the first connection lines extending to the pad area and crossing the second connection lines; a gate connection pattern contacting the first connection lines and the second connection lines; a common electrode on the second substrate; a shortage-preventing pattern on the common electrode and corresponding to the gate connection pattern; a seal pattern surrounding the active area, the seal pattern including a conductive ball; and a liquid crystal layer between the first and second substrates in th
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: September 1, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Byung-Hoon Chang, Min-Jung Kim
  • Publication number: 20090209198
    Abstract: A remote resource access interface apparatus is provided. A key input unit has keys for generating input key values. A communication unit transmits a connection establishment request message including screen resolution information to, and receives a connection establishment response message including supportable key information from, a portable device. The communication unit transmits input key information to and receives video information from the portable device after establishing the connection. A pixel information processing unit converts the video information to pixel signals for a video output unit to display as a visual image. A key advisor unit extracts supportable key information from the response message and outputs the supportable key information to the video output unit. The video information is video data adjusted in resolution based on the screen resolution information, and the input key value is mapped to one of key values indicated by the key information of the portable device.
    Type: Application
    Filed: February 20, 2008
    Publication date: August 20, 2009
    Inventor: Gil Hoon Chang
  • Publication number: 20090154418
    Abstract: An apparatus and method for dynamic resource allocation in a wireless communication system are provided. A method of operating a Base Station (BS) includes configuring a bitmap to indicate whether radio resources are allocated to respective Access Terminals (ATs) according to resource scheduling, generating a resource allocation message including at least one of the configured bitmap, bit allocation information of the bitmap, and bit deallocation information of the bitmap, and transmitting the resource allocation message.
    Type: Application
    Filed: December 15, 2008
    Publication date: June 18, 2009
    Applicant: SAMSUNG ELECTRONICS CO. LTD.
    Inventors: Hee-Won KANG, Hoon CHANG
  • Publication number: 20090140334
    Abstract: A transistor, a display driver integrated circuit having the transistor, and a method for fabricating a transistor are provided. A transistor, according to example embodiments, may include a substrate with a device active region defined by an isolation layer, wherein the device active region may include a source active region, a channel active region, and a drain active region and the channel active region may include a pair of edges contacting the isolation layer. The transistor, according to example embodiments, may also include a gate electrode overlapping the channel active region, wherein the edges are exposed beyond a periphery of the gate electrode, a gate dielectric between the gate electrode and the channel active region, and source and drain impurity regions within the source and drain active regions.
    Type: Application
    Filed: November 18, 2008
    Publication date: June 4, 2009
    Inventor: Hoon Chang
  • Publication number: 20090036587
    Abstract: Disclosed is a polypropylene resin composition with flame retardance and abrasion resistance. The polypropylene resin composition according to the present invention includes 20 to 200 parts by weight of an inorganic flame retardant; and 0.1 to 10 parts by weight of at least one additive, based on 100 parts by weight of a base resin comprising 30 to 90% by weight of polypropylene copolymer resin and 10 to 70% by weight of polyolefin alpha copolymer resin. The polypropylene resin composition according to the present invention can be used for industrial cables with potent endurance since it includes an inorganic flame retardant to show flame retardance and it can remove or reduce a whitening phenomenon and show a significantly improved abrasion resistance without deteriorating moldability or mechanical property even when the contents of the composition are varied to enhance abrasion resistance.
    Type: Application
    Filed: February 16, 2007
    Publication date: February 5, 2009
    Applicant: LS CABLE LTD.
    Inventors: Do-Hoon Chang, June-Sun Kim, In-Hwoi Lee, Gun-Ju Lee, In-Ha Kim, Sun-Keun Kim
  • Patent number: 7483447
    Abstract: An information frame of a new format transmitted according to a radio link protocol (RLP), and a device and method for transmitting and receiving the information frame in a mobile communication system. The information frame is comprised of a plurality of consecutive multiplex frames each having a given length. The multiplex frames each are comprised of a header and a succeeding RLP frame, and the RLP frame includes transmission data. At least one of the multiplex frames is comprised of a plurality of sub-multiplex frames, and each sub-multiplex frame is comprised of a header including an RLP service identifier field and a length indication field for indicating a length of the transmission data, and a data block associated to the succeeding RLP frame.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: January 27, 2009
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Hoon Chang, Hyun-Seok Lee, Dae-Gyun Kim, Chang-Hoi Koo