Patents by Inventor Yong Jun Choi

Yong Jun Choi 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: 20190355487
    Abstract: A method for removing iodine by using Deinococcus radiodurans having a gold nanoparticle synthesis ability is disclosed. More particularly, a method for removing radioactive iodine by adsorbing radioactive iodine onto gold nanoparticles synthesized in cells of Deinococcus radiodurans is disclosed. A recombinant microorganism having an enhanced radioactive iodine removal ability according to the present invention may selectively remove radioactive iodine present in various types of solutions at a high efficiency of 99% or higher, and thus may be very effective in removing radioactive iodine generated in large-scale hospitals, industries, nuclear facility accidents, and the like.
    Type: Application
    Filed: October 19, 2017
    Publication date: November 21, 2019
    Inventor: Yong Jun Choi
  • Patent number: 10435234
    Abstract: A chemical liquid supply apparatus includes a storage container configured to accommodate a chemical liquid for processing a semiconductor substrate, a chemical liquid supply pipe, a supply nozzle, and a grounding conductor. A conductive layer including a non-metallic conductive material is formed on an inner surface of the chemical liquid supply pipe. The supply nozzle includes a non-metallic conductive material. The conductive layer or the supply nozzle is electrically connected to the grounding conductor which is grounded to an outside of the pipe.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: October 8, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong Jhin Cho, In Kwang Bae, Jung Min Oh, Mi Hyun Park, Kun Tack Lee, Yong Jun Choi
  • Publication number: 20190259641
    Abstract: A liquid chemical recycle system includes a buffer tank receiving a first liquid chemical from outside; a vacuum tank having a vacuum pump connected thereto and receiving the first liquid chemical from the buffer tank using the vacuum pump; and a recycle tank receiving the first liquid chemical from the vacuum tank and providing a second liquid chemical, which is a recycled first liquid chemical, to the outside, wherein the buffer tank includes a first injection portion, to which the first liquid chemical is provided, and a first supply portion, which provides the first liquid chemical to the vacuum tank, and a bottom of the buffer tank is downwardly inclined toward the first supply portion to prevent a material contained in the first liquid chemical from being accumulated in the buffer tank.
    Type: Application
    Filed: August 29, 2018
    Publication date: August 22, 2019
    Inventors: Young-Hoo KIM, Sung Hyun PARK, Hyun Woo NHO, Ji Hoon CHA, Yong Jun CHOI
  • Patent number: 10332762
    Abstract: A chemical liquid supply apparatus includes a nozzle unit including a nozzle arm and an injection nozzle mounted in an end of the nozzle arm, a chemical liquid supply unit including a first chemical liquid tank accommodating a first chemical liquid and a second chemical liquid tank accommodating a second chemical liquid, and supplying the first chemical liquid and the second chemical liquid to the nozzle unit, and a mixer unit provided in the nozzle unit and discharging a process fluid by mixing the first chemical liquid and the second chemical liquid, wherein the mixer unit includes an in-line mixer mixing the first chemical liquid and the second chemical liquid that are continually injected from the chemical liquid supply unit, and a mixer pipe extending from the in-line mixer to the injection nozzle.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: June 25, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-hoo Kim, Il-sang Lee, In-gi Kim, Kyoung-hwan Kim, Hyo-san Lee, Sang-won Bae, Tae-hong Kim, Yong-jun Choi
  • Publication number: 20190144309
    Abstract: A resource recovery method includes: feeding raw water to a first-stage raw water tank; supplying high-temperature vapor to a first-stage heat exchanger; performing heat exchange between the supplied high-temperature vapor and the raw water in the first-stage raw water tank, changing a portion of the water into vapor and supplying the changed vapor to a subsequent-stage heat exchanger; repeatedly performing the performing step for each of the raw water tanks sequentially in the order from a second state to a n-th stage; being feed to a crystallizer from the n-th stage raw water tank; detecting a turbidity of the raw water fed to the crystallizer from the n-th-stage raw water tank; and extracting crystals of valuable resources contained in the raw water fed to the crystallizer from the n-th-stage raw water tank when the turbidity of the raw water becomes a predetermined value.
    Type: Application
    Filed: January 17, 2019
    Publication date: May 16, 2019
    Applicant: Kookmin University Industry Academy Cooperation Foundation
    Inventors: Sang-Ho LEE, Jin-Sik SOHN, Yong-Jun CHOI, Ji-Hyeok CHOI, Yong-Hyun SHIN
  • Patent number: 10239770
    Abstract: A multi-stage submerged membrane distillation water treatment apparatus including: a plurality of raw water tanks arranged in multiple stages ranging from a first stage to an n-th stage and storing raw water, the raw water flowing sequentially from the first stage to the n-th stage; membrane distillation (MD) modules submerged in the respective raw water tanks and discharging a portion of the raw water as vapor; heat exchangers submerged in the respective raw water tanks and maintaining the raw water at a predetermined temperature by performing heat exchange between the raw water and vapor supplied from the respective previous-stage MD modules; a vapor generator generating and supplying high-temperature vapor to the first-stage heat exchanger; a condenser condensing vapor supplied by the n-th-stage MD module; and a raw water feeder feeding low-temperature raw water to the first-stage raw water tank via the condenser.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: March 26, 2019
    Assignee: KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATION
    Inventors: Sang-Ho Lee, Yong-Jun Choi, Jin-Sik Sohn, Yong-Hyun Shin, Ji-Hyeok Choi
  • Publication number: 20170313610
    Abstract: A multi-stage submerged membrane distillation water treatment apparatus including: a plurality of raw water tanks arranged in multiple stages ranging from a first stage to an n-th stage and storing raw water, the raw water flowing sequentially from the first stage to the n-th stage; membrane distillation (MD) modules submerged in the respective raw water tanks and discharging a portion of the raw water as vapor; heat exchangers submerged in the respective raw water tanks and maintaining the raw water at a predetermined temperature by performing heat exchange between the raw water and vapor supplied from the respective previous-stage MD modules; a vapor generator generating and supplying high-temperature vapor to the first-stage heat exchanger; a condenser condensing vapor supplied by the n-th-stage MD module; and a raw water feeder feeding low-temperature raw water to the first-stage raw water tank via the condenser.
    Type: Application
    Filed: April 17, 2017
    Publication date: November 2, 2017
    Applicant: Kookmin University Industry Academy Cooperation Foundation
    Inventors: Sang-Ho LEE, Yong-Jun CHOI, Jin-Sik SOHN, Yong-Hyun SHIN, Ji-Hyeok CHOI
  • Patent number: 9672792
    Abstract: The present invention provides a display device with reduced power consumption and that reduces changes in luminance, and perceptibility of flicker, and a driving method thereof. A display device according to an exemplary embodiment comprises: a display panel configured to display a still image and a motion picture; a signal controller configured to control signals for driving the display panel; and a graphics processing unit configured to transmit input image data to the signal controller, wherein the signal controller comprises a frame memory configured to store the input image data, and the display panel is driven at a first frequency when the motion picture is displayed and the display panel is driven at a second frequency that is lower than the first frequency when the still image is displayed.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: June 6, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong-Jun Choi, Jae-Won Jeong, Jae-Suk Choi, Seung-Ho Baek, Joo Seok Yeom, Young-Su Han, Myeong-Su Kim, Yun-Jae Kim, Jin-Soo Kim, Seung Hwan Moon, Po-Yun Park, Jae Wan Park, Kwan-Young Oh, Min Joo Lee, Jung Hwan Cho
  • Publication number: 20170062242
    Abstract: A chemical liquid supply apparatus includes a nozzle unit including a nozzle arm and an injection nozzle mounted in an end of the nozzle arm, a chemical liquid supply unit including a first chemical liquid tank accommodating a first chemical liquid and a second chemical liquid tank accommodating a second chemical liquid, and supplying the first chemical liquid and the second chemical liquid to the nozzle unit, and a mixer unit provided in the nozzle unit and discharging a process fluid by mixing the first chemical liquid and the second chemical liquid, wherein the mixer unit includes an in-line mixer mixing the first chemical liquid and the second chemical liquid that are continually injected from the chemical liquid supply unit, and a mixer pipe extending from the in-line mixer to the injection nozzle.
    Type: Application
    Filed: June 3, 2016
    Publication date: March 2, 2017
    Inventors: YOUNG-HOO KIM, IL-SANG LEE, IN-GI KIM, KYOUNG-HWAN KIM, HYO-SAN LEE, SANG-WON BAE, TAE-HONG KIM, YONG-JUN CHOI
  • Patent number: 9478184
    Abstract: A method of driving a display panel includes generating compensated grayscale data by increasing grayscale data corresponding to an N-th gate line of a plurality of gate lines of the display panel, where N is a natural number, generating a data voltage based on the compensated grayscale data, outputting the data voltage to the display panel including a plurality of pixel electrodes and a plurality of data lines, where each of the plurality of data lines is alternately connected to the plurality of pixel electrodes in a first pixel column and the plurality of pixel electrodes in a second pixel column, generating a storage voltage having a first level and a second level, where the second level is lower than the first level, and applying the storage voltage to the display panel.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: October 25, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yong-Jun Choi, Jae-Suk Choi
  • Patent number: 9322004
    Abstract: The present invention relates to a method of producing a fatty acid alkyl ester using microorganisms having the ability to produce oil, and more particularly to a method of producing a fatty acid alkyl ester, the method comprising culturing microorganisms having the ability to produce oil, thus accumulating a large amount of oil in the microorganisms, inducing the autolysis of the produced oil in the microorganisms to produce a free fatty acid, and converting the free fatty acid into an alkyl ester. According to the method of the present invention, oil accumulated in microorganisms, such as triacylglycerol that is typical oil produced by microorganisms, can be converted into a fatty acid alkyl ester with high efficiency using a metabolic engineering approach. Thus, the method of the present invention is useful for the industrial production of a fatty acid alkyl ester which has been recently found to be effective as biodiesel.
    Type: Grant
    Filed: July 19, 2010
    Date of Patent: April 26, 2016
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sang Yup Lee, Yong Jun Choi
  • Patent number: 9305501
    Abstract: A method to drive a display device includes: transmitting at least one data voltage to one or more of a plurality of data lines, scanning one or more of a plurality of gate lines to enable transmission of a gate signal in association with a first frame of a first hold section of a first still image section associated with display of a still image, and scanning one or more of the plurality of gate lines to enable transmission of the gate signal every frame of a first refresh section. The first still image section comprises the first refresh section.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: April 5, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong-Jun Choi, Hyun Seok Ko, Po-Yun Park, Min Joo Lee, Jung-Hwan Cho
  • Patent number: 9299301
    Abstract: A display device includes a display panel for displaying a still image and for displaying a motion picture. The display panel includes a gate line, a data line, a storage electrode line, a first switching element connected to the gate line and the date line, a storage connected to the switching element and the storage electrode line. The display device further includes a signal controller for providing controlling signals to drive the display panel. The display panel is driven at a first frequency when the motion picture is displayed. The display panel is driven at a second frequency lower than the first frequency when the still image is displayed. When the display panel is driven at the second frequency, a common voltage inputted to the storage electrode line changes.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: March 29, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yong-Jun Choi, Jae-Suk Choi, Po-Yun Park, Jung Hwan Cho, Min Joo Lee
  • Patent number: 9292942
    Abstract: Provided are an image signal compensation apparatus and a liquid crystal display (LCD) including the same. The image signal compensation apparatus includes a lookup table (LUT) and an image signal compensation unit. The LUT includes reference data that corresponds to each combination of first and second reference gray levels and is arranged in a matrix. The image signal compensation unit receives first and second image signals, receives reference data corresponding to the first and second image signals from the LUT, and compensates the second image signal using the reference data. The reference data includes diagonal reference data located on a diagonal line in the matrix, and at least one diagonal reference data from among the diagonal reference data has a different value from a corresponding combination of the first and second reference gray levels.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: March 22, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Bong-Im Park, Bong-Ju Jun, Yun-Jae Kim, Jae-Won Jeong, Yong-Jun Choi, Dong-Beom Cho, Woo-Jin Jung, Kang-Hyun Kim
  • Patent number: 9251756
    Abstract: A display device includes: a display panel configured to display an image; and a signal controller configured to control signals to drive the display panel. The signal controller includes: an image data converter configured to convert image data of “m” bits into image data of “n” bits; a gray voltage generator configured to generate a gray voltage corresponding to the image data of “n” bits; a control signal generator configured to generate a gate control signal; and a luminance change controller configured to control a luminance change period of an image displayed via the display panel to be greater than or equal to one second.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: February 2, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong-Jun Choi, Hyun Seok Ko, Po-Yun Park, Min Joo Lee, Youn Jin Jung, Jung Hwan Cho
  • Publication number: 20150371609
    Abstract: The present invention provides a display device with reduced power consumption and that reduces changes in luminance, and perceptibility of flicker, and a driving method thereof. A display device according to an exemplary embodiment comprises: a display panel configured to display a still image and a motion picture; a signal controller configured to control signals for driving the display panel; and a graphics processing unit configured to transmit input image data to the signal controller, wherein the signal controller comprises a frame memory configured to store the input image data, and the display panel is driven at a first frequency when the motion picture is displayed and the display panel is driven at a second frequency that is lower than the first frequency when the still image is displayed.
    Type: Application
    Filed: August 26, 2015
    Publication date: December 24, 2015
    Inventors: Yong-Jun CHOI, Jae-Won JEONG, Jae-Suk CHOI, Seung-Ho BAEK, Joo Seok YEOM, Young-Su HAN, Myeong-Su KIM, Yun-Jae KIM, Jin-Soo KIM, Seung Hwan MOON, Po-Yun PARK, Jae Wan PARK, Kwan-Young OH, Min Joo LEE, Jung Hwan CHO
  • Patent number: 9208736
    Abstract: A display device includes a display panel having gate lines and data lines, a signal controller driving the display panel, a graphic processing unit transmitting input image data to the signal controller, a gate driver driving the gate lines, and a data driver driving the data lines. The display panel is driven at a first frequency when displaying a moving image and driven at a lower frequency when displaying a still image. The signal controller includes a frame memory storing the input image data, a calculator calculating a representative value of image data stored in the frame memory, a line memory storing the representative value, and a kick-back corrector generating auxiliary image data by correcting the representative value according to a kick-back voltage. The data driver applies an auxiliary voltage corresponding to the auxiliary image data to the data lines in a vertical blank period when displaying the still image.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: December 8, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae-Suk Choi, Yong-Jun Choi, Po-Yun Park, Yun-Jae Kim, Min Joo Lee, Jung Hwan Cho
  • Publication number: 20150337773
    Abstract: An apparatus for supplying fuel to a diesel engine provided with an EGR cooler may include a first supply line for introducing fuel supplied from a fuel tank to the EGR cooler through a low pressure pump, a second supply line for introducing the fuel that passes through the EGR cooler to a common rail through a high pressure pump, and a first bypass line for bypassing a part of the fuel that passes through the low pressure pump to a fuel mixing section formed on a front of the high pressure pump of the second supply line so as to be mixed with fuel that is cooled while passing through the EGR cooler.
    Type: Application
    Filed: December 3, 2014
    Publication date: November 26, 2015
    Applicant: Hyundai Motor Company
    Inventors: Yong Jun CHOI, In Kyun LEE
  • Patent number: 9165518
    Abstract: The present invention provides a display device with reduced power consumption and that reduces changes in luminance, and perceptibility of flicker, and a driving method thereof. A display device according to an exemplary embodiment comprises: a display panel configured to display a still image and a motion picture; a signal controller configured to control signals for driving the display panel; and a graphics processing unit configured to transmit input image data to the signal controller, wherein the signal controller comprises a frame memory configured to store the input image data, and the display panel is driven at a first frequency when the motion picture is displayed and the display panel is driven at a second frequency that is lower than the first frequency when the still image is displayed.
    Type: Grant
    Filed: August 7, 2012
    Date of Patent: October 20, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yong-Jun Choi, Jae-Won Jeong, Jae-Suk Choi, Seung-Ho Baek, Joo Seok Yeom, Young-Su Han, Myeong-Su Kim, Yun-Jae Kim, Jin-Soo Kim, Seung Hwan Moon, Po-Yun Park, Jae Wan Park, Kwan-Young Oh, Min Joo Lee, Jung Hwan Cho
  • Patent number: 9135890
    Abstract: The present invention relates to a display device and a driving method thereof. A display device according to exemplary embodiments of the present invention includes: a signal controller to process an input image signal and an input control signal to control output of a digital image signal; a gray voltage generator to generate a gray reference voltage; and a data driver to generate gray voltages based on the gray reference voltage from the gray voltage generator, to receive the digital image signal, and to output a portion selected from the generated gray voltages as a data voltage, wherein the gray reference voltage includes a first gray reference voltage for the input image signal and a second gray reference voltage for an insertion gray, and the gray voltage generator generates one of the first gray reference voltage or the second gray reference voltage according to the selection signal included in the control signal to be provided to the data driver.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: September 15, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong-Jun Choi, Jae Min Ha, Woo-Jin Jung