Patents by Inventor Choon Lee

Choon Lee 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: 7897425
    Abstract: A method for fabricating an image sensor. The method may include forming a gate, a photo diode, and a floating diffusion region on a pixel region of a semiconductor substrate; forming an oxide film on the pixel region and on an edge region of the semiconductor substrate; forming a sacrificial oxide layer by etching the oxide film using a first photoresist pattern as a mask; forming a metal layer on the first photoresist pattern, the gate, and the floating diffusion region; forming a salicide layer on the gate and the floating diffusion region; etching a remaining non-salicided portion of the metal layer, the first photoresist pattern, and the sacrificial oxide layer; forming an interlayer insulating film on the semiconductor substrate and planarizing the interlayer insulating film; and forming contact holes and forming an edge open part by etching the interlayer insulating film using a second photoresist pattern as a mask.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: March 1, 2011
    Assignee: Dongbu Hitek Co., Ltd.
    Inventors: In Cheol Baek, Kyung Min Park, Sun Chan Lee, Han Choon Lee
  • Patent number: 7880242
    Abstract: A semiconductor device and a fabricating method thereof are provided. The semiconductor device includes a gate insulating layer with a high dielectric constant (k) and a polysilicon layer on a gate metal layer. The gate metal layer can include silicon atoms. Electron mobility can be improved, and production residue and damage can be minimized.
    Type: Grant
    Filed: October 22, 2007
    Date of Patent: February 1, 2011
    Assignee: Dongbu Hitek Co., Ltd.
    Inventor: Han Choon Lee
  • Publication number: 20110002466
    Abstract: A client apparatus includes a wireless network access unit configured to access wireless networks, a packet analysis unit configured to analyze uplink and downlink data packets, a security tunnel processor configured to establish a mobile security tunnel and to maintain the established mobile security tunnel when handover is performed in heterogeneous networks, a wireless network controller configured to control a wireless network accessing process and a connection releasing process of the wireless network access unit, a mobile security tunnel controller configured to perform a MOBIKE protocol and to control a process of establishing and maintaining a mobile security tunnel of the security tunnel processor, and a wireless network connection manager configured to request the mobile security tunnel controller to perform a MOBIKE protocol by managing MOBIKE information and to control handover by setting up and managing a wireless network access policy.
    Type: Application
    Filed: June 22, 2010
    Publication date: January 6, 2011
    Inventors: Dong-Jin Kwak, Woo-Jin Choi, Seong-Choon Lee, Hyung-Keun Ryu
  • Patent number: 7858515
    Abstract: A method for forming a metal line in a semiconductor device may include forming a silicon (Si) monolayer as an etching prevention layer over an exposed portion of a lower metal layer and sidewalls of an upper metal layer, middle metal layer, and the entire surface of curved photoresist patterns.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: December 28, 2010
    Assignee: Dongbu HiTek Co., Ltd.
    Inventor: Han-Choon Lee
  • Publication number: 20100324374
    Abstract: Provided is a laryngeal stroboscope using voice signals. The laryngeal stroboscope includes a photography unit for photographing a patient's vocal cords and a light source for illuminating a part to be photographed, a microphone for sensing the patient's voice, a high-pass filter for passing voice signals of 100 Hz or more among voice signals output from the microphone, a low-pass filter for removing signals of harmonic components from the voice signals output from the high-pass filter and passing only a voice signal in a fundamental frequency band, a peak detector for detecting a peak of the voice signal output from the low-pass filter and obtaining a pitch, and a controller for controlling the light source to intermittently emit light in response to a signal output from the peak detector and controlling the photography unit to operate according to whether or not the light is intermittently emitted.
    Type: Application
    Filed: May 29, 2008
    Publication date: December 23, 2010
    Applicant: UMEDICAL CO., LTD.
    Inventors: Byoung Chul Kim, Kyong Hae Park, Ki Sik Kown, Bum Yong Choi, Jong Won Park, Kyu Won Lee, Jin Choon Lee
  • Publication number: 20100325435
    Abstract: A two-factor authenticated key exchange method. A subscriber station transmits a value generated by using an identifier and an authentication server's public key to the authentication server through an access point. The authentication server uses the value to detect the subscriber's password, a key stored in a token, and the authentication server's secret key, generate a random number. The subscriber station uses the random number, password, and the key to transmit an encrypted value and the subscriber's authenticator to the authentication server. The authentication server establishes a second value generated by using the password, key, and random number to be a decrypted key to decrypt the encrypted value, authenticate the subscriber's authenticator, and transmits the authentication server's authenticator to the subscriber station. The subscriber station authenticates the authentication server's authenticator by using the key and password.
    Type: Application
    Filed: June 28, 2004
    Publication date: December 23, 2010
    Inventors: Young-Man Park, Seong-Choon Lee, Yong-Joo Tcha
  • Publication number: 20100280180
    Abstract: A thermoplastic resin composition includes (A) 60 to 96 parts by weight of a polycarbonate resin, (B) 3 to 30 parts by weight of a polyalkyl(meth)acrylate resin having a weight average molecular weight of 30,000 g/mol or less, and (C) 1 to 10 parts by weight of polydialkyl-diarylsiloxane. The thermoplastic resin composition according to the present invention can have excellent scratch resistance and can be used in molded articles requiring high coloring properties such as exterior parts, vehicle precision parts, and the like.
    Type: Application
    Filed: July 14, 2010
    Publication date: November 4, 2010
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Byung-Choon LEE, Tae-Uk KIM, Young-Jun LEE
  • Patent number: 7826801
    Abstract: An adaptive feedback estimation and cancellation (AFEC) apparatus includes: a controller for generating and outputting control information by using a synchronization signal from an external synchronization acquisition unit and base station information, in order to remove a feedback signal that exists in a forward/reverse repeater signal to be repeated and then send the forward/reverse repeater signal; a first feedback prediction canceller for adaptively removing a feedback signal that exists in the forward repeater signal based on the control information from the controller and automatically adjusting the gain of the forward repeater signal; and a second feedback prediction canceller for adaptively removing a feedback signal that exists in the reverse repeater signal based on the control information from the controller and automatically controlling the gain of the reverse repeater signal.
    Type: Grant
    Filed: March 7, 2007
    Date of Patent: November 2, 2010
    Assignees: Airpoint, KT Corporation
    Inventors: Sung-Jun Baik, Byung-Soo Chang, Seong-Choon Lee, Kyoo-Tae Ryoo, Jeong-Hwi Kim, Jong-Sik Lee
  • Publication number: 20100261844
    Abstract: A thermoplastic resin composition includes a polycarbonate resin, a low molecular weight polymethyl(meth)acrylate resin, and a core-shell graft copolymer, and the low molecular weight polymethyl(meth)acrylate resin has a weight average molecular weight ranging from 5000 to 30,000. The thermoplastic resin composition can have excellent scratch resistance, impact resistance, and transparency, and accordingly can be used in various molded products such as external parts of electronics, external materials of a car, and the like, which can simultaneously require scratch and impact resistance and transparency.
    Type: Application
    Filed: June 28, 2010
    Publication date: October 14, 2010
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Byung-Choon LEE, Tae-Uk KIM, Jin-Kyung CHO
  • Patent number: 7811928
    Abstract: Semiconductor devices and methods of fabricating semiconductor devices are disclosed. A disclosed semiconductor device includes a silicon substrate, a source region and a drain region. A gate electrode is formed on the silicon substrate. Also, a metal silicide layer is formed on each of the gate electrode, the source region, and the drain region. The metal silicide layer has a thickness uniformity of about 1˜20%. A disclosed fabrication method includes forming a metal layer on a silicon substrate having a gate electrode, a source region, and a drain region; performing a plasma treatment on the metal layer; forming a protective layer on the metal layer; and heat treating the silicon substrate on which the protective layer is formed to thereby form a metal silicide layer. A gas that includes nitrogen is used as a plasma gas during the plasma treatment.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: October 12, 2010
    Assignee: Dongbu Electronics Co., Ltd.
    Inventors: Han-Choon Lee, Jin-Woo Park
  • Publication number: 20100252246
    Abstract: A heat exchanger is provided. The heat exchanger includes a plurality of aluminum tubes formed of aluminum, each of the aluminum tubes including a plurality of grooves that are formed on an inner circumferential surface of each of the aluminum tubes and that extend along a longitudinal direction of the aluminum tubes; and a plurality of heat transfer fins coupled to the aluminum tubes. The heat exchanger may contribute to the reduction of the manufacturing cost, may provide high heat transfer performance and may prevent a coolant leak.
    Type: Application
    Filed: August 29, 2008
    Publication date: October 7, 2010
    Inventors: Ju Hyok Kim, Yong Cheol Sa, Han Choon Lee, Dong Hwi Kim, Hong Seong Kim, Sang Yeul Lee
  • Patent number: 7800961
    Abstract: A word line driver for use in a semiconductor memory device includes a boosted voltage generator, a sub word line driver and a main word line driver. The boosted voltage generator generates a boosted voltage by receiving an internal power supply voltage and pumping electric charge. The sub word line driver receives the internal power supply voltage and activates a boosted voltage control signal after supplying the internal power supply voltage to a boost node in a command operating mode. The main word line driver enables a word line by supplying the boosted voltage to the boost node in response to the boosted voltage control signal in a normal operating mode, and enables the word line with the boosted voltage after boosting the word line to the internal power supply voltage by changing the boost node from the internal power supply voltage to the boosted voltage in the command operating mode.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: September 21, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chris Ji Yoon Son, Hi-Choon Lee
  • Patent number: 7767580
    Abstract: A method for fabricating a semiconductor device, including forming a gate insulating layer and a gate electrode on a substrate; forming insulating layer sidewalls at sides of the gate electrode; forming source/drain regions in surface portions of the substrate that are located, respectively, at sides of the gate electrode; forming a conductive silicide layer on the entire surface of the substrate; and selectively removing the silicide layer from areas other than the gate electrode and the source/drain regions of the substrate. The conductive silicide layer may be made by forming a silicon layer on an entire surface of the substrate; forming a conductive layer on the silicon layer; and thermal-processing the substrate such that the conductive layer reacts with the silicon layer.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: August 3, 2010
    Assignee: Dongbu Electronics Co., Ltd.
    Inventor: Han Choon Lee
  • Patent number: 7755958
    Abstract: A semiconductor memory device and method thereof are provided. The example semiconductor memory device may include a plurality of comparators receiving output data signals from each of a plurality of sub-array blocks, comparing the output data signals from each of the plurality of sub-array blocks and outputting a plurality of comparison result signals and a test circuit receiving the plurality of comparison result signals from the plurality of comparators, respectively, the test circuit configured to selectively output one of a given one of the plurality of comparison result signals on a given data input/output pad and a given signal obtained by performing a logical operation on at least two of the plurality of comparison result signals on the given data input/output pad in response to a select signal.
    Type: Grant
    Filed: July 20, 2007
    Date of Patent: July 13, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-yong Byun, Hi-choon Lee
  • Patent number: 7745348
    Abstract: A method of manufacturing a semiconductor device employs a PEALD method including using an organometallic Ta precursor to form a TaN thin film. As a result, a conformal TaN diffusion barrier may be formed at a temperature of 250° C. or higher, so that impurities are reduced and density is increased in the TaN thin film.
    Type: Grant
    Filed: September 15, 2005
    Date of Patent: June 29, 2010
    Assignee: Dongbu Electronics Co., Ltd.
    Inventor: Han-Choon Lee
  • Publication number: 20100160560
    Abstract: Disclosed is a thermoplastic resin composition that includes: (A) about 55 to about 95 wt % of a polycarbonate resin; (B) about 1 to about 40 wt % of a polyalkyl(meth)acrylate resin having a weight average molecular weight of about 1,000,000 g/mol or more; and (C) about 0.001 to about 10 wt % of a polysiloxane resin, and a molded product made using the same.
    Type: Application
    Filed: December 2, 2009
    Publication date: June 24, 2010
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Byung-Choon LEE, Tae-Uk KIM, Doo-Han HA
  • Publication number: 20100160559
    Abstract: Disclosed is a polylactic acid/polycarbonate resin composition including (A) a mixed resin including (a1) a polycarbonate resin and (a2) a polylactic acid resin, and (B) a modified acrylic-based resin, and a molded product made using the same.
    Type: Application
    Filed: December 18, 2009
    Publication date: June 24, 2010
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Hyung-Tak Lee, Doo-Han Ha, Chang-Do Jung, Young-Chul Kwon, Jin-Kyung Cho, Young-Mi Chung, Byung-Choon Lee
  • Publication number: 20100137558
    Abstract: Disclosed herein are exendin singly modified with polyethylene glycole or a derivative thereof, a method for the preparation of the same, and uses thereof. Exendin modified at lysine (27) with polyethylene glycol shows biological activity similar to that of natural exendin, but is improved in half life. In addition, the modification position and the number of PEG or its derivative are restricted so as to minimize the side effects caused by a variety of combinations of such factors. The exendin is useful in the prevention and treatment of diseases caused by the over-secretion of insulin, or diseases caused due to a decrease in plasma glucose level, the inhibition of gastric or intestinal motility, the promotion of satiety, or the inhibition of food intake, especially diabetes, obesity and irritable colon syndrome.
    Type: Application
    Filed: April 20, 2007
    Publication date: June 3, 2010
    Inventors: Kang Choon Lee, Chan Woong Park, Yu Seok Youn, Su Young Chae
  • Publication number: 20100119272
    Abstract: An image forming apparatus, including a display part to input information about a print medium; a print medium tray to load the print medium; a paper guide to align the loaded print medium in the print medium tray; a sensor to sense information about the a of the print medium according to movement of the print medium guide; and a control unit to receive the sensed print medium size information from the sensor and to input the print medium size into the display part.
    Type: Application
    Filed: July 23, 2009
    Publication date: May 13, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Ui-choon LEE
  • Publication number: 20100115980
    Abstract: The embodiment provides a connection pipe and a refrigerant flowing system comprising the same. The connection pipe and the refrigerant flowing system include: a connection pipe main body of which both ends are coupled to first and second refrigerant pipes through which refrigerant is flowed and that has a channel through which refrigerant transferred from the first refrigerant pipe to be transferred to the second refrigerant pipe is flowed; and a flow interfering part that is provided on the channel to interfere the flow of the refrigerant in the direction transferred from the first refrigerant pipe to the channel.
    Type: Application
    Filed: November 3, 2009
    Publication date: May 13, 2010
    Inventors: Han Choon LEE, Hong Seong Kim, Sang Yeul Lee, Yong Cheol Sa