Patents by Inventor Min-Goo Seok
Min-Goo Seok 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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Patent number: 10216209Abstract: A digital Low Drop-Out regulator includes: an event-driven circuit for generating a trigger signal by asynchronously detecting whether an output voltage is out of a threshold range to generate a first error information signal and a first control signal; a time-driven circuit for generating a second error information signal by detecting a change in the output voltage synchronized with a clock signal, and generating a second control signal by combining the first and second error information signals; a clock/trigger control circuit for generating the clock signal having a first or second cycle based on the trigger signal and the first and second error information signals; a first array driver for controlling driving force of the output voltage in response to the first control signal; and a second array driver for controlling the driving force of the output voltage in response to the second control signal.Type: GrantFiled: June 11, 2018Date of Patent: February 26, 2019Assignees: SK Hynix Inc., THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORKInventors: Hyun-Ju Ham, Jong-Hwan Kim, Min-Goo Seok, Do-Yun Kim, Sung Justin Kim
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Patent number: 10198015Abstract: A digital LDO regulator includes: a pulse control circuit for generating a proportional control signal based on an error code, generating an integral control signal that toggles during a first section, which includes an initialization section and an integration section, based on the proportional control signal, and generating a state information signal that defines a steady state section, the initialization section, and the integration section; a proportional control circuit for outputting a first drive signal by multiplying the error code by a proportional gain factor based on the proportional control signal; an integral control circuit for outputting a second drive signal by multiplying the error code by an integral gain factor based on the state information signal and the integral control signal; and a driver for adjusting the output voltage in response to the first drive signal and the second drive signal.Type: GrantFiled: June 11, 2018Date of Patent: February 5, 2019Assignees: SK Hynix Inc., THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORKInventors: Hyun-Ju Ham, Jong-Hwan Kim, Min-Goo Seok, Do-Yun Kim, Sung Justin Kim
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Patent number: 10108211Abstract: A regulator includes: an ADC for detecting a change in an output voltage and outputting an error code; a control signal generation unit for generating a proportional control signal, integral control signals, a counting signal, and an error sign signal based on the error code; a proportional control unit for shifting the error code based on a proportional gain factor, and outputting a first control signal by synchronizing the shifted error code with the proportional control signal; an integral control unit for shifting the integral control signals based on the counting signal, shifting the shifted signals based on an integral gain factor to generate integral pulse signals, and outputting second control signals by controlling a pre-stored code value based on the integral pulse signals and the error sign signal; and a driving unit for outputting first and second currents in response to the first and second control signals.Type: GrantFiled: February 3, 2017Date of Patent: October 23, 2018Assignees: SK Hynix Inc., THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORKInventors: Hyun-Ju Ham, Jong-Hwan Kim, Min-Goo Seok, Do-Yun Kim
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Publication number: 20180224875Abstract: A regulator includes: an ADC for detecting a change in an output voltage and outputting an error code; a control signal generation unit for generating a proportional control signal, integral control signals, a counting signal, and an error sign signal based on the error code; a proportional control unit for shifting the error code based on a proportional gain factor, and outputting a first control signal by synchronizing the shifted error code with the proportional control signal; an integral control unit for shifting the integral control signals based on the counting signal, shifting the shifted signals based on an integral gain factor to generate integral pulse signals, and outputting second control signals by controlling a pre-stored code value based on the integral pulse signals and the error sign signal; and a driving unit for outputting first and second currents in response to the first and second control signals.Type: ApplicationFiled: February 3, 2017Publication date: August 9, 2018Inventors: Hyun-Ju HAM, Jong-Hwan KIM, Min-Goo SEOK, Do-Yun KIM
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Patent number: 9870014Abstract: A regulator may comprise: an ADC unit for detecting a change in an output voltage and outputting an error code based on the detected result; a digital processing unit for generating a proportional control signal, a plurality of integral control signals, a counting signal, and an error sign signal based on the error code, outputting pull-up and pull-down control signals by multiplying the error code by a proportional gain factor in response to the proportional control signal, and outputting a plurality of sub-pull-up control signals by performing integration on the integral control signals based on the counting signal and multiplying the integration result by an integral gain factor; a first driving unit for outputting a first current in response to the pull-up and pull-down control signals; and a second driving unit for outputting a second current in response to the sub-pull-up control signals.Type: GrantFiled: February 3, 2017Date of Patent: January 16, 2018Assignees: SK Hynix Inc., THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORKInventors: Hyun-Ju Ham, Jong-Hwan Kim, Min-Goo Seok, Do-Yun Kim
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Patent number: 9244310Abstract: A liquid crystal display device includes an array substrate, an opposite substrate and a liquid crystal display layer. The array substrate includes a pixel electrode and a lower reactive mesogen layer. The pixel electrode includes a plurality of slit portions disposed on a plurality of domains in different directions. The lower reactive mesogen layer is disposed on the pixel electrode to induce an inclined direction of liquid crystal molecules. The opposite substrate includes an upper substrate. An upper reactive mesogen layer is disposed on a common electrode of the opposite substrate. The liquid crystal layer includes liquid crystal molecules arranged to have a pretilt angle between a surface of the lower reactive mesogen layer and a surface of the upper reactive mesogen layer.Type: GrantFiled: June 13, 2014Date of Patent: January 26, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Myeong-Ha Kye, Jun-Hyup Lee, Jae-Jin Lyu, Seung-Beom Park, Jong-Ho Son, Ji-Won Sohn, Hoon Kim, Min-Goo Seok, Jun-Hee Na, Min-Jae Kim, Su-Han Woo
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Publication number: 20140293203Abstract: A liquid crystal display device includes an array substrate, an opposite substrate and a liquid crystal display layer. The array substrate includes a pixel electrode and a lower reactive mesogen layer. The pixel electrode includes a plurality of slit portions disposed on a plurality of domains in different directions. The lower reactive mesogen layer is disposed on the pixel electrode to induce an inclined direction of liquid crystal molecules. The opposite substrate includes an upper substrate. An upper reactive mesogen layer is disposed on a common electrode of the opposite substrate. The liquid crystal layer includes liquid crystal molecules arranged to have a pretilt angle between a surface of the lower reactive mesogen layer and a surface of the upper reactive mesogen layer.Type: ApplicationFiled: June 13, 2014Publication date: October 2, 2014Inventors: Myeong-Ha KYE, Jun-Hyup LEE, Jae-Jin LYU, Seung-Beom PARK, Jong-Ho SON, Ji-Won SOHN, Hoon KIM, Min-Goo SEOK, Jun-Hee NA, Min-Jae KIM, Su-Han WOO
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Patent number: 8755013Abstract: A liquid crystal display device includes an array substrate, an opposite substrate and a liquid crystal display layer. The array substrate includes a pixel electrode and a lower reactive mesogen layer. The pixel electrode includes a plurality of slit portions disposed on a plurality of domains in different directions. The lower reactive mesogen layer is disposed on the pixel electrode to induce an inclined direction of liquid crystal molecules. The opposite substrate includes an upper substrate. An upper reactive mesogen layer is disposed on a common electrode of the opposite substrate. The liquid crystal layer includes liquid crystal molecules arranged to have a pretilt angle between a surface of the lower reactive mesogen layer and a surface of the upper reactive mesogen layer.Type: GrantFiled: April 6, 2009Date of Patent: June 17, 2014Assignee: Samsung Display Co., Ltd.Inventors: Myeong-Ha Kye, Jun-Hyup Lee, Jae-Jin Lyu, Seung-Beom Park, Jong-Ho Son, Ji-Won Sohn, Hoon Kim, Min-Goo Seok, Jun-Hee Na, Min-Jae Kim, Su-Han Woo
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Patent number: 8436970Abstract: Provided is a liquid crystal display including: a first substrate and a second substrate facing each other; a pixel electrode disposed on the first substrate; an opposing electrode disposed on the second substrate; a liquid crystal layer in vertical alignment mode interposed between the first substrate and the second substrate and including a plurality of liquid crystal molecules; and a tilt direction determining member determining tilt directions of the liquid crystal molecules when an electric field is generated in the liquid crystal layer, wherein the liquid crystal layer includes a first area and a second area in each of the first area and the second area, the liquid crystal molecules being aligned to have a pretilt without the electric field in the liquid crystal layer, and a pretilt angle of the liquid crystal molecules in the first area is larger a pretilt angle that of the liquid crystal molecules in the second area.Type: GrantFiled: August 18, 2011Date of Patent: May 7, 2013Assignee: Samsung Display Co., Ltd.Inventors: Min-Goo Seok, Keun Chan Oh, Dong-Gi Seong, Min-Jae Kim, Min-Hee Kim
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Patent number: 8390767Abstract: A method of manufacturing a display panel, the method includes forming a display panel including a first substrate, the first substrate including a pixel electrode disposed thereon, a second substrate including a common electrode disposed thereon, and a liquid crystal layer interposed between the first and the second substrates, the liquid crystal layer including a plurality of liquid crystal molecules and a plurality of ultraviolet (“UV”)-curable particles; and curing a portion of the UV-curable particles by irradiating light on the display panel, wherein an exposure voltage, which is greater than a maximum data voltage corresponding to maximum grayscale data of the display panel, is applied between the pixel electrode and the common electrode. Also described is a display panel.Type: GrantFiled: April 1, 2009Date of Patent: March 5, 2013Assignee: Samsung Display Co., Ltd.Inventors: Min-Jae Kim, Jae-Jin Lyu, Seung-Beom Park, Ji-Won Sohn, Jun-Hyup Lee, Myeong-Ha Kye, Hoon Kim, Min-Goo Seok
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Patent number: 8355110Abstract: A method for manufacturing a liquid crystal display panel by providing a first substrate and providing a first alignment film, providing a second substrate and providing a second alignment film; interposing a liquid crystal compound and at least two reactive mesogens between the first and second substrates, where the two reactive mesogens are selected from Chemical Formulas 1 and 2; curing the reactive mesogens to form a first mesogen layer; and a second mesogen layer, wherein wherein in Chemical Formula 1 A and B are each independently selected from the group consisting of and wherein at least one hydrogen atom of a naphthalene group is independently replaced with at least one of F and Cl and wherein in Chemical Formula 2, D is selected from at least one of and a single bond, wherein E and G are each independently selected from at least one of and wherein at least one hydrogen atom of a phenyl group are independently replaced with at least one of F and Cl.Type: GrantFiled: November 23, 2009Date of Patent: January 15, 2013Assignee: Samsung Display Co., Ltd.Inventors: Min-Hee Kim, Dong-Gi Seong, Min-Goo Seok, Jae-Jin Lyu, Seung-Beom Park
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Patent number: 8318270Abstract: A liquid crystal display (“LCD”) panel includes a first substrate including a pixel electrode defining pixel areas, a first alignment layer disposed on the pixel electrode and a first reactive mesogen layer disposed on the first alignment layer, a second substrate including a common electrode layer disposed on an entire portion of the second substrate facing the first substrate, a second alignment layer disposed on the common electrode layer and a second reactive mesogen layer disposed on the second alignment layer, and a liquid crystal layer disposed between the first and second substrates and including a first liquid crystal compound represented by Chemical Formula 1, a second liquid crystal compound represented by Chemical Formula 2 and a third liquid crystal compound represented by Chemical Formula 3:Type: GrantFiled: August 7, 2009Date of Patent: November 27, 2012Assignee: Samsung Display Co., Ltd.Inventors: Dong-Gi Seong, Jae-Jin Lyu, Seung-Beom Park, Myeong-Ha Kye, Min-Goo Seok, Min-Hee Kim
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Patent number: 8300181Abstract: A method of fabricating liquid crystal display (LCD) that may improves picture quality by removing uncured monomers in a liquid crystal panel and an LCD obtained by the method are provided. The method includes forming a liquid crystal layer between a first substrate and a second substrate by injecting liquid crystal molecules and monomers between the first substrate and the second substrate, the first and second substrates facing each other; applying an electric field to the liquid crystal layer; performing a primary curing operation on the monomers; and removing the electric field and performing a secondary curing operation on remaining monomers, wherein at least one of the primary curing operation and the secondary curing operation includes maintaining a temperature of the liquid crystal layer below a phase transition temperature of the liquid crystal molecules.Type: GrantFiled: October 5, 2009Date of Patent: October 30, 2012Assignee: Samsung Display Co., Ltd.Inventors: Jong-Ho Son, Seung-Beom Park, Myeong-Ha Kye, Hoon Kim, Min-Goo Seok, Seon-Ah Cho
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Publication number: 20120249902Abstract: Provided is a liquid crystal display including: a first substrate and a second substrate facing each other; a pixel electrode disposed on the first substrate; an opposing electrode disposed on the second substrate; a liquid crystal layer in vertical alignment mode interposed between the first substrate and the second substrate and including a plurality of liquid crystal molecules; and a tilt direction determining member determining tilt directions of the liquid crystal molecules when an electric field is generated in the liquid crystal layer, wherein the liquid crystal layer includes a first area and a second area in each of the first area and the second area, the liquid crystal molecules being aligned to have a pretilt without the electric field in the liquid crystal layer, and a pretilt angle of the liquid crystal molecules in the first area is larger a pretilt angle that of the liquid crystal molecules in the second area.Type: ApplicationFiled: August 18, 2011Publication date: October 4, 2012Inventors: Min-Goo SEOK, Keun Chan OH, Dong-Gi SEONG, Min-Jae KIM, Min-Hee KIM
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Patent number: 8237908Abstract: A method of manufacturing a liquid crystal display includes; forming a mother substrate assembly by disposing a liquid crystal mixture layer having liquid crystals and a light curable alignment supplement between a first mother substrate and a second mother substrate of a liquid crystal display, and disposing a light curable sealant surrounding the liquid crystal mixture layer, pre-tilting liquid crystal molecules of the liquid crystal mixture layer by applying a voltage to the first mother substrate and the second mother substrate, and simultaneously hardening the alignment supplement and the sealant by radiating light to the mother substrate assembly while applying the voltage to the first mother substrate and the second mother substrate.Type: GrantFiled: October 29, 2008Date of Patent: August 7, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Min-Goo Seok, Jae-Jin Lyu, Seung-Beom Park, Jong-Ho Son, Ji-Won Sohn, Myeong-Ha Kye, Hoon Kim, Jun-Hee Na
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Patent number: 7911561Abstract: A display apparatus includes a main display panel and a sub-display panel. The main display panel includes a first main display substrate and a second main display substrate disposed opposite the first main display substrate to overlap the first main display substrate. The sub-display panel includes a first sub-display substrate and a second sub-display substrate disposed opposite the first sub-display substrate to overlap the first sub-display substrate. The first main display substrate includes a first alignment mark and a second alignment mark, the second main display substrate includes a third alignment mark corresponding to the second alignment mark, the first sub-display substrate includes a fourth alignment mark, and the second sub-display substrate includes a fifth alignment mark corresponding to the fourth alignment mark and a sixth alignment mark corresponding to the first alignment mark.Type: GrantFiled: February 27, 2008Date of Patent: March 22, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Min-Goo Seok, Woo-Jin Bae, Myeong-Ha Kye
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Patent number: 7867582Abstract: A liquid crystal composition and a liquid crystal display including the liquid crystal composition that includes a first class containing a fluorine-containing liquid crystal compound represented by Formula I (n=1, 2, or 3), and a second class containing at least one neutral liquid crystal compound represented by Formulae III, IV, and V. In Formula I, W1 and W2 are each independently selected from the group consisting of —F, —CF3, —CF2H, —OCF3, and —OCF2H, the liquid crystal compounds represented by Formulae I, III, IV, and V have R1, R2, and R5 to R10 that are any one of a hydrogen atom, and an alkyl group, an alkoxy group, and an alkenyl group having 1 to 12 carbon atoms as terminal groups, and a first sub-class has a content of 6 wt % or less based on a total content of the first class and the second class, with the proviso that a liquid crystal compound of the first class having n=1 is the first sub-class and a liquid crystal compound of the first class having n=2 or 3 is a second sub-class.Type: GrantFiled: October 8, 2009Date of Patent: January 11, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Jong-Ho Son, Fusayuki Takeshita, Jae-Jin Lyu, Keun-Chan Oh, Yong-Kuk Yun, Hyun Wuk Kim, Jang-Hyun Kim, Min-Goo Seok, Sik-Young Jo
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Publication number: 20100304015Abstract: A method for manufacturing a liquid crystal display panel by providing a first substrate and providing a first alignment film, providing a second substrate and providing a second alignment film; interposing a liquid crystal compound and at least two reactive mesogens between the first and second substrates, where the two reactive mesogens are selected from Chemical Formulas 1 and 2; curing the reactive mesogens to form a first mesogen layer; and a second mesogen layer, wherein wherein A and B are independently selected from ?and at least one hydrogen atom of a naphthalene group is independently replaceable with F or Cl; and wherein D is selected from ?and a single bond, E and G are independently selected from ?and at least one hydrogen atom of a phenyl group is independently replaceable with ?F or Cl.Type: ApplicationFiled: November 23, 2009Publication date: December 2, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Min-Hee KIM, Dong-Gi SEONG, Min-Goo SEOK, Jae-Jin LYU, Seung-Beom PARK
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Patent number: 7815979Abstract: Disclosed is a liquid crystal display that includes a first substrate, a second substrate facing the first substrate, a pair of field generating electrodes formed on at least one of the first substrate and the second substrate, and a liquid crystal layer interposed between the first substrate and the second substrate. The liquid crystal layer comprises a liquid crystal composition that includes a first class having at least one fluorine atom, and a second class containing a neutral compound. The second class includes a first sub-class and a second sub-class. The first sub-class contains a liquid crystal compound having at least one selected from an alkyl group and an alkoxy group having C1 to C5 in a terminal group thereof. The second sub-class contains a liquid crystal compound having an alkenyl group having C1 to C5 in terminal groups thereof. The second sub-class is contained in a content of about 7 wt % or less of a total content of the liquid crystal composition.Type: GrantFiled: April 2, 2007Date of Patent: October 19, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Hyun-Wuk Kim, Jae-Jin Lyu, Jong-Ho Son, Myeong-Ha Kye, Min-Goo Seok, Sik-Young Jo
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Publication number: 20100231845Abstract: A liquid crystal display (“LCD”) panel includes a first substrate including a pixel electrode defining pixel areas, a first alignment layer disposed on the pixel electrode and a first reactive mesogen layer disposed on the first alignment layer, a second substrate including a common electrode layer disposed on an entire portion of the second substrate facing the first substrate, a second alignment layer disposed on the common electrode layer and a second reactive mesogen layer disposed on the second alignment layer, and a liquid crystal layer disposed between the first and second substrates and including a first liquid crystal compound represented by Chemical Formula 1, a second liquid crystal compound represented by Chemical Formula 2 and a third liquid crystal compound represented by Chemical Formula 3:Type: ApplicationFiled: August 7, 2009Publication date: September 16, 2010Applicant: Samsung Electronics Co., Ltd.Inventors: Dong-Gi SEONG, Jae-Jin LYU, Seung-Beom PARK, Myeong-Ha KYE, Min-Goo SEOK, Min-Hee KIM