Patents by Inventor Cheol Min Kim

Cheol Min Kim 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: 20140375533
    Abstract: An organic light emitting display including pixels, a scan driver, a data driver, a control line driver, and a compensation unit. The pixels are positioned in an area defined by data lines, scan lines, and control lines, and each includes an organic light emitting diode. The scan driver drives the scan lines. The data driver drives the data lines. The control line driver drives the control lines. The compensation unit extracts threshold voltage information of a driving transistor included in each pixel during a sensing period. In the organic light emitting display, the compensation unit supplies a preset voltage to a gate electrode of the driving transistor so that a second current flows during the sensing period, and supplies a reference voltage to a drain electrode of the driving transistor during the period in which the second current flows.
    Type: Application
    Filed: March 10, 2014
    Publication date: December 25, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventor: Cheol-Min KIM
  • Publication number: 20140354713
    Abstract: An organic light emitting display device, including pixels positioned at crossing regions of scan lines and data lines and a bias voltage supply configured to supply bias voltages to the pixels. Each of the pixels includes an organic light emitting diode (OLED), a first transistor coupled between a first power supply and the OLED and driven in a saturation region by a corresponding one of the bias voltages to supply a set current to the OLED, a second transistor coupled between the first power supply and the OLED and driven in a linear region by a data signal supplied from a corresponding one of the data lines to turn on or off, and a second capacitor coupled between a gate electrode of the first transistor and the first power supply.
    Type: Application
    Filed: October 7, 2013
    Publication date: December 4, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Cheol-Min Kim, Joo-Hyung Lee
  • Patent number: 8891048
    Abstract: A liquid crystal display (LCD) with an integrated touch screen panel includes a plurality of pixels connected to a plurality of data lines and a plurality of gate lines, the gate lines being divided into a plurality of groups, a plurality of sensing electrodes, a plurality of common electrodes divided into a plurality of groups, a common electrode driver configured to simultaneously supply a driving signal to common electrodes within each group of the plurality of groups of the common electrodes, and to sequentially supply the driving signal to the plurality of groups of the common electrodes, and a gate driver configured to sequentially supply a gate signal to gate lines within each of the plurality of group of the gate lines.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: November 18, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Woo Park, Sang-Jin Pak, Jin-Hee Lee, Sang-Kwon Ha, Ji-Gong Lee, Hideo Yoshimura, Cheol-Min Kim, Joo-Hyung Lee
  • Publication number: 20140333597
    Abstract: An organic light-emitting diode (OLED) display panel is disclosed. In one aspect, the panel includes a first transistor which receives a data signal transferred through a data line in response to a scan signal transferred through a gate line and a second transistor which receives a first power signal in response to a bias signal and outputs a source-driving signal. The panel also includes a third transistor which receives the source-driving signal in response to an output signal of the first transistor and outputs a driving signal, an organic light-emitting element which comprises a first electrode being connected to the third transistor and which receives the driving signal and a second electrode which receives a second power signal. The panel further includes a fourth transistor which is electrically connected to the third transistor and which receives the driving signal.
    Type: Application
    Filed: March 3, 2014
    Publication date: November 13, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Soon-Dong Kim, Yang-Hwa Choi, Cheol-Min Kim, Hyung-Ryul Kang
  • Publication number: 20140292624
    Abstract: An organic light emitting display device includes: pixels at crossing regions of data lines and scan lines, each of the pixels including an organic light emitting diode (OLED); a scan driver configured to drive the scan lines; a data driver configured to drive the data lines; a control line driving unit configured to drive control lines; and a compensation unit configured to extract at least one of deterioration information of the OLED or threshold voltage information of a driving transistor from at least one of the pixels during a sensing period. The data driver is further configured to supply a same first data signal to each of the pixels other than the at least one of the pixels in the sensing period.
    Type: Application
    Filed: September 20, 2013
    Publication date: October 2, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yang-Hwa Choi, Cheol-Min Kim
  • Patent number: 8830156
    Abstract: A gate driving circuit includes a plurality of stages, each stage including an input unit to determine a level of voltage to input to a first node based on the first and second input signals and the first clock signal that is input according to the level of the voltage input to the first node and a first gate-off voltage that is input in response to the second clock signal, a second driving unit outputting the gate signals based on the third clock signal input according to the voltage input to the first node and a second gate-off voltage input in response to the second clock signal, and a leakage blocking unit blocking leakage current of a transistor by maintaining a level of voltage input to a third node connected to the first node via at least one transistor.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: September 9, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Cheol-Min Kim, Sang-Jin Pak, Min-Seok Bae
  • Publication number: 20140219886
    Abstract: The present invention relates to a capillary microcuvette, the microcuvette comprises a body member having two plates and a cavity formed within the body, the cavity being defined by two opposing inner surfaces of the two plates of the body member, a portion of the cavity defining a detection zone, a capillary inlet being provided at one end of the body member that is communicated with the cavity, a sample slot being provided at a portion of the body member in which the capillary inlet is not formed, the sample slot being communicated with the cavity. The present microcuvette improves user convenience by providing dual application means of applying a specimen directly from a fingertip or using a pipette.
    Type: Application
    Filed: August 14, 2012
    Publication date: August 7, 2014
    Applicant: BODITECH MED INC.
    Inventors: Eui Yul Choi, Ki Bong Nham, Byeong Chul Kim, Ki Tae Park, Cheol Min Kim
  • Patent number: 8773603
    Abstract: An LCD with an integrated touch screen panel includes a first substrate having a plurality of pixels formed thereon, wherein each pixel of the plurality of pixels is provided with a thin film transistor and a pixel electrode. A second substrate faces the first substrate and has a plurality of common electrodes formed inside thereof. The plurality of common electrodes is arranged in a first direction to correspond to the plurality of pixels. A plurality of sensing electrodes is outside of the second substrate and arranged in a second direction intersecting the first direction. A liquid crystal layer is between the first and the second substrates. A common electrode driver sequentially supplies a driving signal to the common electrodes and supplies a compensation signal having a phase opposite to the driving signal to the common electrodes.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: July 8, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Woo Park, Hideo Yoshimura, Joo-Hyung Lee, Sang-Jin Pak, Cheol-Min Kim
  • Publication number: 20140146028
    Abstract: A pixel, a display device including the same, and a driving method thereof. The display device includes: a data driver transmitting data signals; a scan driver generating and transmitting scan signals; a display panel including pixels, each emitting light with a driving current according to the data signals; a compensation signal unit generating and transmitting a compensation control signal for controlling simultaneous transmission of a predetermined bias voltage to each of the pixels before a data voltage according to the data signals is applied to each of the pixels; a power controller controlling voltage levels of the first power source voltage and the second power source voltage and supplying the level-controlled first and second power source voltages; and a timing controller generating the data signals by processing an external image signal and generating a plurality of driving control signals.
    Type: Application
    Filed: May 23, 2013
    Publication date: May 29, 2014
    Inventors: Yang-Hwa Choi, Cheol-Min Kim
  • Patent number: 8730223
    Abstract: A source driver includes a gamma reference voltage generating unit and a gamma signal supplying unit. The gamma reference voltage generating unit generates a plurality of gamma reference voltages in response to a gamma control signal. The gamma signal supplying unit is integrated into a display panel and provides a gamma signal to data lines of the display panel using the gamma reference voltages.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: May 20, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Cheol Min Kim, Oh Kyong Kwon, Jae Beom Choi, Won Chang Chung, Joon Ha Park
  • Publication number: 20140118322
    Abstract: An organic light emitting display device is capable of improving uniformity between panels while improving an operation speed. The organic light emitting display device includes: a scan driver for supplying scan signals to scan lines; a data driver for supplying data signals to data lines; pixels located at crossing regions between the scan lines and the data lines, wherein the pixels are configured to control an amount of current supplied to an organic light emitting diode, according to a bias voltage; and a bias voltage supplier for supplying the bias voltage to the pixels, wherein a voltage value of the bias voltage is set to generate light having a desired luminance when the pixels emit light.
    Type: Application
    Filed: January 30, 2013
    Publication date: May 1, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Soon-Dong KIM, Yang-Hwa CHOI, Cheol-Min KIM, Hyung-Ryul KANG
  • Patent number: 8698853
    Abstract: The present invention provides a liquid crystal display (LCD) device with reduced response time with respect to input frame data. The present invention also provides an LCD device for performing pre-tilt driving and over-drive driving using only two frame memories. According to the present invention, a method of driving a liquid crystal display (LCD) device comprises generating pre-tilt data with respect to a current frame by using previous frame data and current frame data, generating over-drive data with respect to the current frame by using the previous frame data and the current frame data, displaying the pre-tilt data with respect to the current frame, and displaying the over-drive data with respect to the current frame.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: April 15, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Cheol-Min Kim
  • Patent number: 8624814
    Abstract: A liquid crystal display (“LCD”) includes a liquid crystal panel having gate lines, data lines and pixels. The pixels are grouped into pixel lines. The LCD further includes a data driver which performs line-inversion driving by applying a data voltage having a positive or a negative polarity to the pixels such that the pixels in each pixel line have a same polarity. The pixel lines are grouped into first and second pixel line groups. A polarity of the pixels in each pixel line of the first pixel line group is the same as a polarity of the pixels in at least one pixel line disposed on an immediately adjacent side thereof. A polarity of the pixels in each pixel line of the second pixel line group is opposite to a polarity of both pixels in pixel lines disposed on two immediately adjacent sides thereof.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: January 7, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Cheol-Min Kim
  • Patent number: 8587506
    Abstract: A display device is provided, which includes, a substrate, a plurality of gate lines formed on the substrate, a gate driver disposed on the substrate and transmitting gate signals to the gate lines, a repair gate driver disposed on the substrate and having a structure substantially the same as that of the gate driver, and a signal line coupled to the gate driver and the repair gate driver and transmitting at least one control signal to the gate driver.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: November 19, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Tae-Hyeong Park, Cheol-Min Kim
  • Publication number: 20130249884
    Abstract: A gate driving circuit includes a plurality of stages, each stage including an input unit to determine a level of voltage to input to a first node based on the first and second input signals and the first clock signal that is input according to the level of the voltage input to the first node and a first gate-off voltage that is input in response to the second clock signal, a second driving unit outputting the gate signals based on the third clock signal input according to the voltage input to the first node and a second gate-off voltage input in response to the second clock signal, and a leakage blocking unit blocking leakage current of a transistor by maintaining a level of voltage input to a third node connected to the first node via at least one transistor.
    Type: Application
    Filed: August 28, 2012
    Publication date: September 26, 2013
    Inventors: Cheol-Min KIM, Sang-Jin PAK, Min-Seok BAE
  • Publication number: 20120283428
    Abstract: Disclosed are a hyaluronic acid derivative effective against atopic dermatitis, and a method for manufacturing same. The method for manufacturing the hyaluronic acid derivative of the present invention comprises: a first step of chlorinating ascorbic acid; a second step of producing a tetrabutylamonium hydroxide (TBA) salt of hyaluronic acid; and a third step of conjugating the ascorbic acid chlorinated in the first step and the TBA salt of hyaluronic acid produced in the second step. The hyaluronic acid derivative can effectively decrease the substances causing skin lesions, can contribute toward the remission of atopic disease, and is effective in skin renewal.
    Type: Application
    Filed: September 13, 2010
    Publication date: November 8, 2012
    Applicant: CELLINBIO CO.,LTD
    Inventors: Dong Hee Lee, Jun Sik Song, Ha Na Jung, Sang Do Cha, Da Yea Lee, Cheol Min Kim, Jong Chul Park
  • Patent number: 8289260
    Abstract: A driving device for a display device includes a gray voltage generator generating a plurality of gray voltages, a voltage selector selecting an output voltage from the plurality of gray voltages, a voltage level converter converting a level of the output voltage selected by the voltage selector and applying the output voltage with a converted level to data lines, a first switching unit connecting the voltage level converter to the voltage selector and the data lines, and a second switching unit directly connecting the voltage selector and the data lines. Operating times of the first and second switching units are different. Accordingly, when a data voltage is charged in or discharged from a data line, since a separate discharging transistor or a separate discharging amplifier is not used, power consumption and an area of a data driver are reduced.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: October 16, 2012
    Assignees: Samsung Electronics Co., Ltd., Industry-University Cooperation Foundation, Hanyang University
    Inventors: Cheol-Min Kim, Il-Gon Kim, Tae-Hyeong Park, Gi-Chang Lee, Oh-Kyong Kwon
  • Patent number: 8279147
    Abstract: A display device includes a plurality of pixels connected with a plurality of gate lines and a plurality of data lines, a data driving part applying a data signal to the plurality of data lines, a gate driving part applying a gate signal to the plurality of gate lines, and a plurality of protection circuits connected with the plurality of data lines, wherein each of the plurality of protection circuits comprises a first transistor including a control terminal connected with a first signal line, an input terminal connected with a data line, and an output terminal connected with a second signal line, a second transistor including a control terminal connected with the second signal line, an input terminal connected with the second signal line, and an output terminal connected with the first signal line, and a storage capacitor is connected between the control terminal of the first transistor and the output terminal of the first transistor.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: October 2, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Gi-Chang Lee, Il-Gon Kim, Won-Chang Chung, Cheol-Min Kim
  • Patent number: 8245948
    Abstract: A co-generation system is provided that includes a heat exchanger that heats water; a heat transfer path connected with the water heat exchanger that transfers heat; a hot water storage tank connected with the water heat exchanger and the water circulation path; a hot water storage water supply apparatus that supplies water in the hot water storage tank to the water circulation path; a water supply path connected with the water circulation path; a water supply apparatus that supplies water to the water supply path; and a hot water supply heat exchanger bypassing apparatus that bypasses the water supplied to the water circulation path from the hot water storage tank through the hot water supply heat exchanger.
    Type: Grant
    Filed: April 12, 2007
    Date of Patent: August 21, 2012
    Assignee: LG Electronics Inc.
    Inventors: Eun Jun Cho, Sim Bok Ha, Cheol Min Kim, Se Dong Chang
  • Patent number: D680228
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: April 16, 2013
    Assignee: Boditech Med Inc.
    Inventors: Eui-Yul Choi, Kie-Bong Nahm, Byeong-Chul Kim, Ki-Tae Park, Cheol-Min Kim