Patents by Inventor Seung Chul Lee

Seung Chul 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: 7583219
    Abstract: Provided are a pipeline Analog-to-Digital Converter (ADC) without a front-end Sample-and-Hold Amplifier (SHA) and a method of controlling the same. The method includes the steps of: simultaneously sampling, at an ADC and a residual signal generator included in a first stage, an analog input signal and respectively generating a first sampling value and a second sampling value; holding, at the residual signal generator, the second sampling value, and simultaneously amplifying and converting, at the ADC, the first sampling value into a corresponding digital code; and generating, at the residual signal generator, a residual signal using the digital code. The pipeline ADC and method of controlling the same minimize sampling mismatch caused by removing a front-end SHA, thereby ensuring stable performance without a front-end SHA. Since a front-end SHA is not used, it is possible to reduce chip size and power consumption, and improve the performance of the ADC.
    Type: Grant
    Filed: February 7, 2008
    Date of Patent: September 1, 2009
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Young Deuk Jeon, Young Kyun Cho, Kwi Dong Kim, Jong Kee Kwon, Jong Dae Kim, Seung Chul Lee
  • Publication number: 20090207096
    Abstract: Disclosed is a multi panel display device comprising, at least two liquid crystal panels connected to each other at positions adjacent to each other and respectively composed of image display portions and non-display portions; and image shift films disposed above each of the liquid crystal panels with being spaced therefrom by a specific distance and connected to each other at positions adjacent to each other respectively have first and second bevels disposed to be symmetrical to each other, wherein the first and second bevels are repeatedly formed to face the display panels.
    Type: Application
    Filed: October 22, 2008
    Publication date: August 20, 2009
    Inventors: Seung-Chul LEE, Hyung-Ki HONG, Ju-Un PARK
  • Publication number: 20090170847
    Abstract: The inventive imidazopyridine derivative can be used in a pharmaceutical composition for preventing or treating diseases such as diabetes, obesity, dementia, cancer, and inflammation, since it can efficiently inhibit the activities of several protein kinases including glycogen synthase kinase-3 (GSK-3), aurora kinase, extracellular signal-regulated kinase (ERK), protein kinase B (AKT), and the likes, to control signal transductions thereof.
    Type: Application
    Filed: January 23, 2007
    Publication date: July 2, 2009
    Inventors: Seung Chul Lee, Jin Seok Choi, Jung Hoon Oh, Boonsaeng Park, Yong Eun Kim, Jun Hee Lee, Dongkyu Shin, Cheol Min Kim, Young-Lan Hyun, Cheol Soon Lee, Joong-Myung Cho, Seonggu Ro
  • Patent number: 7532146
    Abstract: Provided is a multi-bit pipeline analog-to-digital converter (ADC) having a merged capacitor switching structure. In a multiplying digital-to-analog converter (MDAC) used in the multi-bit pipeline ADC, switches are connected between the bottom plates of respective differential capacitors, thereby constantly maintaining a uniform input common mode voltage regardless of an input digital code. Thus, it is possible to improve the operating speed and performance of the MDAC.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: May 12, 2009
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Young Deuk Jeon, Seung Chul Lee, Kwi Dong Kim, Chong Ki Kwon, Jong Dae Kim
  • Publication number: 20090109372
    Abstract: A backlight assembly includes: a light source forming light; and a multi-focusing sheet focusing the light provided by the light source in at least two regions.
    Type: Application
    Filed: October 23, 2008
    Publication date: April 30, 2009
    Inventors: Seung Chul Lee, Ju Un Park
  • Publication number: 20090096646
    Abstract: Provided are a method of algorithmic analog-to-digital conversion and an algorithmic Analog-to-Digital Converter (ADC). The algorithmic ADC includes a Multiplying Digital-to-Analog Converter (MDAC). The MDAC includes a Digital-to-Analog Converter (DAC) for converting a first digital signal into an analog signal, a subtractor for calculating a difference between the signal output from the DAC and an analog signal input from a first Sample and Hold Amplifier (SHA), an amplifier for amplifying the difference, a first capacitor unit connected with an output end of the first SHA and an input end of the amplifier through a first switching unit, a second capacitor unit connected with the input end and an output end of the amplifier through a second switching unit, and a third capacitor unit connected with the input end and the output end of the amplifier through a third switching unit.
    Type: Application
    Filed: August 26, 2008
    Publication date: April 16, 2009
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Seung Chul LEE, Jae Won NAM, Young Deuk JEON, Jong Kee KWON
  • Patent number: 7492428
    Abstract: A thin film transistor array substrate includes: a gate line and a data line on a substrate to define a pixel area; a thin film transistor in the pixel area; a pixel electrode connected to the thin film transistor; and a common electrode positioned to oppose the pixel electrode and forming a closed aperture area for transmitting and shutting off light by a rotation of liquid crystal positioned within said aperture area.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: February 17, 2009
    Assignee: LG Display Co., Ltd.
    Inventor: Seung Chul Lee
  • Publication number: 20090033530
    Abstract: Provided are a pipeline Analog-to-Digital Converter (ADC) without a front-end Sample-and-Hold Amplifier (SHA) and a method of controlling the same. The method includes the steps of: simultaneously sampling, at an ADC and a residual signal generator included in a first stage, an analog input signal and respectively generating a first sampling value and a second sampling value; holding, at the residual signal generator, the second sampling value, and simultaneously amplifying and converting, at the ADC, the first sampling value into a corresponding digital code; and generating, at the residual signal generator, a residual signal using the digital code. The pipeline ADC and method of controlling the same minimize sampling mismatch caused by removing a front-end SHA, thereby ensuring stable performance without a front-end SHA. Since a front-end SHA is not used, it is possible to reduce chip size and power consumption, and improve the performance of the ADC.
    Type: Application
    Filed: February 7, 2008
    Publication date: February 5, 2009
    Inventors: Young Deuk JEON, Young Kyun CHO, Kwi Dong KIM, Jong Kee KWON, Jong Dae KIM, Seung Chul LEE
  • Patent number: 7486216
    Abstract: Provided is a multi-bit pipeline analog-to-digital converter (ADC) capable of altering an operating mode. The ADC includes: a sample-and-hold amplifier (SHA) for sampling and holding an input analog voltage; an n+1 number of B-bit flash ADCs for receiving an analog signal and converting the analog signal into a digital signal to output the digital signal; an n number of B-bit multiplying digital-to-analog converters (MDACs) for converting a difference between the digital signal output from the B-bit flash ADC and the front-stage output signal into an analog signal to output the analog signal to the next stage; and a mode control circuit for generating n-bit control signals to control the B-bit flash ADC and the B-bit MDAC according to required resolution and operating frequency.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: February 3, 2009
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seung Chul Lee, Young Deuk Jeon, Kwi Dong Kim, Chong Ki Kwon
  • Patent number: 7482966
    Abstract: Provided is an algorithm analog-to-digital converter (ADC). The algorithm ADC obtains two digital outputs through different capacitor connections for one analog input signal and adds the digital output signals to obtain a final output value, so that a mismatch factor of the capacitor is removed to minimize a linearity limitation resulting from the capacitor mismatch. In addition, the algorithm ADC minimizes power consumption by making the operating frequency slow at a cycle requiring a high resolution and making the operating frequency fast at a cycle requiring a low resolution, i.e., outputting different operating clock frequencies according to a required resolution.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: January 27, 2009
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seung Chul Lee, Young Deuk Jeon, Kwi Dong Kim, Jong Kee Kwon
  • Publication number: 20080164509
    Abstract: A nonvolatile memory device includes a semiconductor substrate of a first conductivity type, a plurality of word lines on the semiconductor substrate, each the plurality of word lines including a floating gate of a second conductivity type. A ground select line and a string select line are disposed on respective sides of word lines. An impurity region of the second conductivity type underlies a first word line adjacent the ground select line. The device may further include a second impurity region of the second conductivity type underlying a second word line adjacent the string select line. In still further embodiments, the device may further include third impurity regions of the second conductivity type underlying respective third word lines between the first word line and the second word line. Methods of forming such devices are also provided.
    Type: Application
    Filed: January 10, 2008
    Publication date: July 10, 2008
    Inventors: Seung-Chul Lee, Keun-Ho Lee, Choong-Ho Lee, Byung-Yong Choi
  • Patent number: 7397409
    Abstract: A multi-bit pipeline analog-to-digital converter (ADC) having a shared amplifier structure includes: a sample-and-hold amplifier (SHA) for sampling and holding an input analog voltage and removing a sampling error of the input voltage; N-bit flash ADCs of first to K-th stages receiving analog signals, converting them into digital signals and outputting the digital signals; N-bit multiplying digital-to-analog converters (MDACs) of first to K-th stages converting differences between the digital signals output from the N-bit flash ADCs and output signals of preceding stages back into analog signals and outputting the analog signals; and a three-stage amplifier connected to an output of the N-bit MDAC of the first stage at a first clock and an output of the SHA at a second clock, wherein intergers N>= and K>=2. An amplifier can be shared between an SHA and an MDAC of a first stage, thereby reducing power consumption and chip size.
    Type: Grant
    Filed: April 2, 2007
    Date of Patent: July 8, 2008
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Young Deuk Jeon, Seung Chul Lee, Kwi Dong Kim, Jong Kee Kwon, Jong Dae Kim
  • Publication number: 20080144378
    Abstract: A nonvolatile semiconductor memory includes a floating formation switch coupled to a bit line in a memory cell array. The floating formation switch maintains a channel voltage of memory cells coupled to the bit line at a level above a power supply voltage when the bit line is a non-selected bit line, which reduces electrical stress applied to the memory cells connected to the non-selected bit line during a read operation.
    Type: Application
    Filed: November 29, 2007
    Publication date: June 19, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki-Tae PARK, Seung-Chul LEE, Ki-Nam KIM
  • Patent number: 7388533
    Abstract: A digital-to-analog converter (DAC) for a sigma-delta modulator is provided. The DAC has a switched capacitor structure using an operational amplifier (OP amp) and performs a function exceeding 3-level using a switching method employing only one capacitor in single ended form. Thus, DAC non-linearity caused by capacitor mismatching does not occur, and the number of output levels of the DAC is increased. Also, the DAC capacitor may be applied to a general DAC to increase the ratio of DAC output levels to capacitors.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: June 17, 2008
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Yi Gyeong Kim, Chong Ki Kwon, Jong Dae Kim, Min Hyung Cho, Seung Chul Lee, Gyu Hyun Kim
  • Patent number: 7388640
    Abstract: An in-plane switching mode LCD device includes a first substrate; one or more gate line on the first substrate; one or more data line crossing perpendicularly the one or more data line to define a pixel region; a common electrode module disposed in the pixel region; a pixel electrode module disposed in the pixel region, overlapping the common electrode module; a second substrate facing the first substrate; a first alignment film and a second alignment film disposed at facing surfaces of the first and second substrates, respectively; and a liquid crystal layer between the first alignment film and the second alignment film. The common electrode module includes a plurality of common electrodes and a plurality of protruded common electrodes. The pixel electrode module includes a plurality of pixel electrodes and a plurality of protruded pixel electrodes.
    Type: Grant
    Filed: October 8, 2004
    Date of Patent: June 17, 2008
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Seung-Chul Lee, Ki-Bok Park, Won-Ho Lee, Sang-Ho Choi
  • Publication number: 20080136699
    Abstract: Provided is an algorithm analog-to-digital converter (ADC). The algorithm ADC obtains two digital outputs through different capacitor connections for one analog input signal and adds the digital output signals to obtain a final output value, so that a mismatch factor of the capacitor is removed to minimize a linearity limitation resulting from the capacitor mismatch. In addition, the algorithm ADC minimizes power consumption by making the operating frequency slow at a cycle requiring a high resolution and making the operating frequency fast at a cycle requiring a low resolution, i.e., outputting different operating clock frequencies according to a required resolution.
    Type: Application
    Filed: November 28, 2007
    Publication date: June 12, 2008
    Inventors: Seung Chul LEE, Young Deuk JEON, Kwi Dong KIM, Jong Kee KWON
  • Publication number: 20080129567
    Abstract: Provided is a multi-bit pipeline analog-to-digital converter (ADC) capable of altering an operating mode. The ADC includes: a sample-and-hold amplifier (SHA) for sampling and holding an input analog voltage; an n+1 number of B-bit flash ADCs for receiving an analog signal and converting the analog signal into a digital signal to output the digital signal; an n number of B-bit multiplying digital-to-analog converters (MDACs) for converting a difference between the digital signal output from the B-bit flash ADC and the front-stage output signal into an analog signal to output the analog signal to the next stage; and a mode control circuit for generating n-bit control signals to control the B-bit flash ADC and the B-bit MDAC according to required resolution and operating frequency.
    Type: Application
    Filed: February 16, 2007
    Publication date: June 5, 2008
    Inventors: Seung Chul Lee, Young Deuk Jeon, Kwi Dong Kim, Chong Ki Kwon
  • Publication number: 20080129576
    Abstract: Provided is a multi-bit pipeline analog-to-digital converter (ADC) having a merged capacitor switching structure. In a multiplying digital-to-analog converter (MDAC) used in the multi-bit pipeline ADC, switches are connected between the bottom plates of respective differential capacitors, thereby constantly maintaining a uniform input common mode voltage regardless of an input digital code. Thus, it is possible to improve the operating speed and performance of the MDAC.
    Type: Application
    Filed: September 20, 2007
    Publication date: June 5, 2008
    Inventors: Young Deuk Jeon, Seung Chul Lee, Kwi Dong Kim, Chong Ki Kwon, Jong Dae Kim
  • Publication number: 20080093677
    Abstract: Provided are semiconductor devices and methods of fabricating the same. A semiconductor device may include a semiconductor substrate with a device isolation layer defining HVE and HVD active regions. Gate insulation layer patterns may be disposed on the HVE and HVD active regions. Gate electrodes may be disposed on the gate insulation layer patterns to intersect the HVE and HVD active regions and the device isolation layer. An ion implantation layer may be disposed on the semiconductor substrate under the gate electrode of the HVD active region, spaced apart from the device isolation layer, and serves to adjust a threshold voltage.
    Type: Application
    Filed: December 28, 2006
    Publication date: April 24, 2008
    Inventors: Tae Kyung Kim, Sung-Hoi Hur, Chang-Sub Lee, Seung-Chul Lee, Dong-Jun Lee
  • Publication number: 20080074339
    Abstract: The present invention relates to a bent folded dipole antenna for reducing a beam width difference, which can reduce a beam width difference, varying with a frequency band, and generate dual polarization through the use of an antenna structure having a bent folded dipole antenna unit, in which a plurality of bent folded dipole components is connected to each other as a single pattern, and a feeding unit for feeding a signal to the folded dipole antenna unit. Therefore, the present invention is advantageous in that it can reduce a beam width difference varying with a frequency band, simplify the structure of the antenna to reduce the cost thereof, and easily obtain dual polarization characteristics and wide band characteristics by combining a feeding unit for feeding a signal in a dual feeding manner with the bent folded dipole antenna unit implemented as a single pattern.
    Type: Application
    Filed: January 12, 2007
    Publication date: March 27, 2008
    Applicant: Ace Antenna Corp.
    Inventors: Seung-Chul Lee, Jae-Sun Jin, Myung-Kuk Kim