Patents by Inventor Young-Gil Kim
Young-Gil 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).
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Publication number: 20120091885Abstract: Disclosed are novel organic electroluminescent compounds and organic electroluminescent devices comprising the same. With good luminous efficiency and excellent life property, the disclosed organic electroluminescent compounds can be used to manufacture OLED devices having very good operation life.Type: ApplicationFiled: March 29, 2010Publication date: April 19, 2012Applicant: Rohm and Haas Electronic Materials Korea Let.Inventors: Young Gil Kim, Young Jun Chop, Hyuck Joo Kwon, Bong Ok Kim, Sung Min Kim, Seung Soo Yoon
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Display device, display device testing system and method for testing a display device using the same
Patent number: 7928752Abstract: A display device testing system and a method for testing a display device using the same, which are capable of testing whether a display panel is defective or not according to a variation of the frame frequency and whether the driver module operates normally or not even at a voltage higher than a normal operation voltage. The display device testing system includes a display panel including a plurality of gate lines; a driver module including a gate driver unit for sequentially supplying a gate voltage to the plurality of gate lines in response to a test, vertical synchronization start signal; and a testing module for supplying a test vertical synchronization start signal to the driver module.Type: GrantFiled: March 1, 2007Date of Patent: April 19, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Sang Jun Lee, Young Gil Kim -
Publication number: 20110041032Abstract: Two hybrid message decoders for low-density parity-check (LDPC) codes are proposed. One decoder uses a posteriori probability ratio (APPR) and a posteriori probability difference (APPD), and the other decoder uses a logarithm a posteriori probability ratio (LAPPR) and a logarithm a posteriori probability difference (LAPPD) as hybrid message. Since the variable node and check node processing can be readily done using APPR and APPD, respectively, the proposed decoders have lower complexity than the conventional decoder that uses LAPPR only as a message.Type: ApplicationFiled: August 19, 2008Publication date: February 17, 2011Applicant: THE GOVERNORS OF THE UNIVERSITY OF ALBERTAInventors: Young Gil Kim, Norman C. Beaulieu
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Publication number: 20100108997Abstract: Provided are novel organic electroluminescent compounds, and organic electroluminescent devices comprising the same as electroluminescent material. Specifically, the organic electroluminescent compounds according to the present invention are represented by Chemical Formula (1): wherein, at least one substituent(s) among Ar1, Ar2, R6, R7, R8, R9, R10, R11, R12, R13, R14 and R15 represent(s) The organic electroluminescent compounds according to the present invention exhibit high luminous efficiency and excellent life property of material, so that an OLED having very good operation life can be manufactured therefrom. Further, the organic electroluminescent compound according to the present invention, when it is contained in an electroluminescent layer or a hole transport layer, lowers the operation voltage to result in noticeable decrease in power consumption, with exhibiting at least comparable luminous efficiency as compared to conventional OLED's.Type: ApplicationFiled: October 13, 2009Publication date: May 6, 2010Applicant: Gracel Display Inc.Inventors: Young Gil Kim, Young Jun Cho, Chi Sik Kim, Sung Jin Eum, Hyuck Joo Kwon, Bong Ok Kim, Sung Min Kim, Seung Soo Yoon
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Patent number: 7705589Abstract: A sensor for detecting surface defects of a metal tube solves a problem of a conventional eddy current probe in that it is difficult to detect a crack in the circumferential direction of a metal tube. The sensor includes a plurality of coils wound at a predetermined inclined angle. The plurality of coils is inserted into the inside of a metal tube. Alternating current is applied to the coils to measure a change in impedance of the coils due to a change in an eddy current generated in the metal tube, thus detecting a surface defect of the metal tube.Type: GrantFiled: February 19, 2008Date of Patent: April 27, 2010Assignee: Korea Research Institute of Standards and ScienceInventors: Young Joo Kim, Bong Young Ahn, Seung Seok Lee, Young Gil Kim, Dong Jin Yoon
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Publication number: 20100072888Abstract: Provided are a novel organic electroluminescent compound and an organic electroluminescent device using the same as an electroluminescent material.Type: ApplicationFiled: September 3, 2009Publication date: March 25, 2010Applicant: Gracel Display Inc.Inventors: Young Gil Kim, Young Jun Cho, Chi Sik Kim, Sung Jin Eum, Hyuck Joo Kwon, Bong Ok Kim, Sung Min Kim, Seung Soo Yoon
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Publication number: 20090206830Abstract: Disclosed herein is a sensor for detecting surface defects of a metal tube, which can solve a problem of a conventional eddy current probe in that it is difficult to detect a crack in the circumferential direction of a metal tube. For this purpose, the present provides a sensor for detecting surface defects of a metal tube, the sensor including a plurality of coils wound at a predetermined inclined angle, wherein the plurality of coils is inserted into the inside of a metal tube and an alternating current is applied to the coils to measure a change in impedance of the coils due to a change in an eddy current generated in the metal tube, thus detecting a surface defect of the metal tube.Type: ApplicationFiled: February 19, 2008Publication date: August 20, 2009Inventors: Young Joo KIM, Bong Young Ahn, Seung Seok Lee, Young Gil Kim, Dong Jin Yoon
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Publication number: 20090079716Abstract: A display device includes a timing controller, a noise removing part, a data driving part and a gate driving part. The timing controller outputs image data and a data clock having a pair of differential signals. The noise removing part is connected to a pair of output terminals for outputting the pair of differential signals. The noise removing part removes common-mode noise included in the pair of differential signals. The data driving part generates an image data signal using the image data and the data clock, and outputs the image data signal to a data line on a display panel. The gate driving part generates a gate signal, and outputs the gate signal to a gate line on the display panel.Type: ApplicationFiled: August 21, 2008Publication date: March 26, 2009Inventors: Jong-Tae Kim, Ki-Hyun Hong, Young-Gil Kim
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Publication number: 20090040244Abstract: In a driving device, a liquid crystal display having the driving device, and a method of driving the liquid crystal display, the driving device includes a signal controller, a voltage selector, a gray-scale voltage generator, and a data driver. The signal controller outputs a power-down signal indicating an imminent power-off. The voltage selector outputs a common voltage in response to the signal. The gray-scale voltage generator receives the common voltage to generate common gray-scale voltages having a same voltage level as that of the common voltage. The data driver generates common data voltages based on the common gray-scale voltages. The driving device controls a display panel so that the display panel displays a white image in response to the signal. Thus, an after-image after the power-off is removed, therefore improving the display quality of the display panel.Type: ApplicationFiled: June 2, 2008Publication date: February 12, 2009Inventors: Kyung-Hun Lee, Young-Gil Kim, Kyeong-Sik Cho, So-Yeon Yi
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Publication number: 20080211792Abstract: A liquid crystal display includes a plurality of gate lines and a plurality of data lines crossing over the gate lines while being electrically insulated from the gate lines. Pixels are placed at the cross regions of the gate and the data lines arranged in a matrix form. Each pixel has a switching circuit connected to the gate and the data lines. Data voltages are fed to the pixels such that the polarity of the pixels is inverted per a pixel group of two or more pixel rows. Gate voltages are applied to the neighboring first and second pixel groups such that the gate voltage applied to the pixel row of the first pixel group close to the second pixel group differs from the gate voltage applied to the pixel row of the first pixel group distant to the second pixel group.Type: ApplicationFiled: November 28, 2007Publication date: September 4, 2008Inventors: Hyun-Su Lee, Young-Gil Kim, Byoung-Jun Lee, Jun-Pyo Lee
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Patent number: 7417612Abstract: A gamma voltage generator for a liquid crystal display (LCD) capable of removing residual images by compensating a gamma voltage is presented. The gamma voltage generation apparatus adjusts the common voltage by the kickback voltage for the intermediate gray level, and tunes the gamma voltages other than the intermediate gray level gamma voltage. The adjustment of the gamma voltages other than the intermediate gray level gamma voltage is achieved in such a manner that the difference between the intermediate gray level kickback voltage and the kickback voltage at one of the gray levels other than the intermediate gray level is equal to half of the difference between the sum of the two inverted gamma voltages representing the intermediate gray level gamma voltages and the sum of the two inverted gamma voltages corresponding to the selected gray level.Type: GrantFiled: February 27, 2007Date of Patent: August 26, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Hyun-Su Lee, Byoung-Jun Lee, Jun-Pyo Lee, Young-Gil Kim, Hoi-Sik Moon
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Publication number: 20080106666Abstract: A liquid crystal display capable of preventing a residual image phenomenon from occurring after power is cut off. The liquid crystal display includes: a voltage generating unit outputting a gate-on voltage to a first output node, outputting a gate-off voltage to a second output node, and pulling up the voltage level of the second output node to a level of a positive discharge voltage after a power supply voltage is cut off; a gate driving unit sequentially supplying the gate-on voltage and the gate-off voltage; a data driving unit supplying an image data voltage; and a liquid crystal panel including a plurality of pixels that are turned on or off according to the gate-on voltage or the gate-off voltage, so as to display an image corresponding to the image data voltage.Type: ApplicationFiled: October 24, 2007Publication date: May 8, 2008Inventors: Yo-han Lee, Young-gil Kim, Seoung-bum Pyoun, Sung-hee Lee, Sang-iun Lee
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DISPLAY DEVICE, DISPLAY DEVICE TESTING SYSTEM AND METHOD FOR TESTING A DISPLAY DEVICE USING THE SAME
Publication number: 20080036715Abstract: A display device testing system and a method for testing a display device using the same, which are capable of testing whether a display panel is defective or not according to a variation of the frame frequency and whether the driver module operates normally or not even at a voltage higher than a normal operation voltage. The display device testing system includes a display panel including a plurality of gate lines; a driver module including a gate driver unit for sequentially supplying a gate voltage to the plurality of gate lines in response to a test, vertical synchronization start signal; and a testing module for supplying a test vertical synchronization start signal to the driver module.Type: ApplicationFiled: March 1, 2007Publication date: February 14, 2008Inventors: Sang Jun Lee, Young Gil Kim -
Patent number: 7321352Abstract: A liquid crystal display includes a plurality of gate lines and a plurality of data lines crossing over the gate lines while being electrically insulated from the gate lines. Pixels are placed at the cross regions of the gate and the data lines arranged in a matrix form. Each pixel has a switching circuit connected to the gate and the data lines. Data voltages are fed to the pixels such that the polarity of the pixels is inverted per a pixel group of two or more pixel rows. Gate voltages are applied to the neighboring first and second pixel groups such that the gate voltage applied to the pixel row of the first pixel group close to the second pixel group differs from the gate voltage applied to the pixel row of the first pixel group distant to the second pixel group.Type: GrantFiled: May 3, 2002Date of Patent: January 22, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Hyun-Su Lee, Young-Gil Kim, Byoung-Jun Lee, Jun-Pyo Lee
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Publication number: 20070211006Abstract: A gamma voltage generator for a liquid crystal display (LCD) capable of removing residual images by compensating a gamma voltage is presented. The gamma voltage generation apparatus adjusts the common voltage by the kickback voltage for the intermediate gray level, and tunes the gamma voltages other than the intermediate gray level gamma voltage. The adjustment of the gamma voltages other than the intermediate gray level gamma voltage is achieved in such a manner that the difference between the intermediate gray level kickback voltage and the kickback voltage at one of the gray levels other than the intermediate gray level is equal to half of the difference between the sum of the two inverted gamma voltages representing the intermediate gray level gamma voltages and the sum of the two inverted gamma voltages corresponding to the selected gray level.Type: ApplicationFiled: February 27, 2007Publication date: September 13, 2007Inventors: Hyun-Su Lee, Byoung-Jun Lee, Jun-Pyo Lee, Young-Gil Kim, Hoi-Sik Moon
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Patent number: 7208819Abstract: A power module package is provided. The power module package includes a power circuit element, a control circuit element, a lead frame, a heat sink, and an epoxy molding compound (EMC). The control circuit element is connected to the power circuit and controls chips in the power circuit. The lead frame has external connecting means formed at the edges thereof, and a down set part, namely, formed between the external connecting means. The lead frame has a first surface to which the power circuit and the control circuit are attached, and a second surface used as a heat dissipating path, in particular, the power circuit is attached to the down set part. The heat sink which is closely attached to the down set part of the second surface of the lead frame by an adhesive. The EMC surrounds the power circuit, the control circuit, the lead frame and the heat sink, and exposes the external connecting means of the lead frame and a side of the heat sink.Type: GrantFiled: October 26, 2004Date of Patent: April 24, 2007Assignee: Fairchild Korea Semiconductor Ltd.Inventors: Gi-young Jeun, Sung-min Park, Joo-sang Lee, Sung-won Lim, O-seob Jeon, Byoung-ok Lee, Young-gil Kim, Gwi-gyeon Yang
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Patent number: 7193595Abstract: A gamma voltage generator of a liquid crystal display (LCD) capable of removing residual images by compensating a gamma voltage. The gamma voltage generation apparatus adjusts the common voltage by the kickback voltage for the intermediate gray level, and tunes the gamma voltages other than the intermediate gray level gamma voltage. The adjustment of the gamma voltages other than the intermediate gray level gamma voltage is achieved in such a manner that the difference between the intermediate gray level kickback voltage and the kickback voltage at one of the gray levels other than the intermediate gray level is equal to half of the difference between the sum of the two inverted gamma voltages representing the intermediate gray level gamma voltages and the sum of the two inverted gamma voltages corresponding to the selected gray level.Type: GrantFiled: June 18, 2002Date of Patent: March 20, 2007Assignee: Samsung Electronics, Co., Ltd.Inventors: Jun-Pyo Lee, Young-Gil Kim, Hoi-Sik Moon, Hyun-Su Lee, Byoung-Jun Lee
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Patent number: 7061080Abstract: A power module package is provided. The power module package includes a power circuit element, a control circuit element, a lead frame, a heat sink, and an epoxy molding compound (EMC). The control circuit element is connected to the power circuit and controls chips in the power circuit. The lead frame has external connecting means formed at the edges thereof, and a down set part, namely, formed between the external connecting means. The lead frame has a first surface to which the power circuit and the control circuit are attached, and a second surface used as a heat dissipating path, in particular, the power circuit is attached to the down set part. The heat sink which is closely attached to the down set part of the second surface of the lead frame by an adhesive. The EMC surrounds the power circuit, the control circuit, the lead frame and the heat sink, and exposes the external connecting means of the lead frame and a side of the heat sink.Type: GrantFiled: June 10, 2002Date of Patent: June 13, 2006Assignee: Fairchild Korea Semiconductor Ltd.Inventors: Gi-young Jeun, Sung-min Park, Joo-sang Lee, Sung-won Lim, O-seob Jeon, Byoung-ok Lee, Young-gil Kim, Gwi-gyeon Yang
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Publication number: 20050111004Abstract: A reference value setting unit of a specimen inspection apparatus comprises a calibration specimen, a calibration light source for emitting a predetermined light to the calibration specimen, at least one detector for receiving a first light-scattering signal reflected through the calibration specimen as well as a second light-scattering signal reflected from an inspection specimen, and a detector calibration unit for comparing a measured value measured from the calibration specimen with a reference value for the detector, and for calculating an offset value for calibration based on the comparison to calibrate the detector.Type: ApplicationFiled: August 11, 2004Publication date: May 26, 2005Inventors: Byoung-Chul Kim, Duck-Sun Yang, Ho-Hyung Jung, Young-Gil Kim
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Publication number: 20050056918Abstract: A power module package is provided. The power module package includes a power circuit element, a control circuit element, a lead frame, a heat sink, and an epoxy molding compound (EMC). The control circuit element is connected to the power circuit and controls chips in the power circuit. The lead frame has external connecting means formed at the edges thereof, and a down set part, namely, formed between the external connecting means. The lead frame has a first surface to which the power circuit and the control circuit are attached, and a second surface used as a heat dissipating path, in particular, the power circuit is attached to the down set part. The heat sink which is closely attached to the down set part of the second surface of the lead frame by an adhesive. The EMC surrounds the power circuit, the control circuit, the lead frame and the heat sink, and exposes the external connecting means of the lead frame and a side of the heat sink.Type: ApplicationFiled: October 26, 2004Publication date: March 17, 2005Applicant: Fairchild Korea Semiconductor Ltd.Inventors: Gi-young Jeun, Sung-min Park, Joo-sang Lee, Sung-won Lim, O-seob Jeon, Byoung-ok Lee, Young-gil Kim, Gwi-gyeon Yang