Patents by Inventor Tae Choy

Tae Choy 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: 11081063
    Abstract: An organic light emitting display device includes scan lines arranged in horizontal lines, data lines intersecting the scan lines, a pixel array including pixels coupled to the scan lines and the data lines, the pixels including at least first color pixels, a panel tester including switching elements coupled to first ends of the data lines, the switching elements including at least first and second switching elements, and a first line coupled to the first switching elements and a second line coupled to the second switching elements. Data lines of K-th to (K+L)-th (where K and L are natural numbers) first color pixels arranged in a predetermined horizontal line are coupled to the first line through the first switching elements, and data lines of at least a part of remaining first color pixels arranged in the predetermined horizontal line are coupled to the second line through the second switching elements.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: August 3, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dae Youn Cho, Sang Kil Kim, Hyo Jung Kim, Jong Woo Park, Dong Gi Ahn, Jong Won Lee, Ju Hee Lee, Young Tae Choi
  • Publication number: 20210223096
    Abstract: An optical measurement device includes an optical sensor which measures an optical waveform of a reference object or a measurement object, a learner which receives a first optical waveform of the reference object from the optical sensor and learns frequency characteristics of the first optical waveform, a filter generator which analyzes the frequency characteristics of the first optical waveform and generates a frequency filter, a frequency modeling unit which receives a second optical waveform of the measurement object from the optical sensor and models frequency characteristics of the second optical waveform, and an optical characteristic detector which calculates an optical characteristic index of the second optical waveform based on an output value of the frequency modeling unit and the frequency filter.
    Type: Application
    Filed: January 20, 2021
    Publication date: July 22, 2021
    Inventors: Dae Youn CHO, Eu Gene KIM, Ji Ho MOON, Jong Woo PARK, Young Tae CHOI
  • Patent number: 11018519
    Abstract: Disclosed is a charging apparatus capable of reducing a low-frequency leakage current, the charging apparatus including a duty controller that determines a duty of a switching element in a power factor correction converter based on a level of a common-mode component of an alternating-current (AC) voltage of AC power provided from an external charging facility, a level of a direct-current (DC) voltage formed by a DC link capacitor, and a leakage current flowing from a connection node of two input-terminal Y-capacitors and a connection node of two output-terminal Y-capacitors to the ground.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: May 25, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Dong Gyun Woo, Gyu Tae Choi, Hui Sung Jang, Hyun Wook Seong
  • Patent number: 11017719
    Abstract: A display device includes a plurality of pixels. Each pixel includes a first transistor that controls an amount of current received from a first power supply voltage line connected via a second node to an organic light emitting diode in response to a voltage of a first node, a second transistor connected between a data line and the second node and that includes a first gate electrode connected to a first scan line, a light emitting line connected to a gate electrode of at least one light emitting transistor located in a current path between the first power supply voltage line and the organic light emitting diode, and a seventh transistor connected between one of at least one second gate electrode of the second transistor and the light emitting line. Accordingly, a threshold voltage of a switching transistor included in each of the plurality of pixels may be negatively shifted.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: May 25, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyo Jung Kim, Tae Young Kim, Yong Sung Park, Jong Woo Park, Mi Seon Seo, Keun Soo Lee, Ki Ju Im, Dae Youn Cho, Young Tae Choi, Hyun Cheol Hwang
  • Publication number: 20210134918
    Abstract: An organic light emitting display device may include a first active pattern disposed on a substrate and including a first region, a second region, and a third region; a first gate electrode disposed on the first active pattern and forming a first transistor together with the first region and the second region; a second gate electrode disposed on the first active pattern and forming a second transistor together with the second region and the third region; a third gate electrode disposed on the first gate electrode, overlapping the second region, and forming a storage capacitor together with the first gate electrode; a metal pattern disposed between the first active pattern and the third gate electrode and overlapping the second region; and an organic light emitting diode electrically connected to the first transistor, the second transistor, and the storage capacitor.
    Type: Application
    Filed: September 28, 2020
    Publication date: May 6, 2021
    Applicant: Samsung Display Co., LTD.
    Inventors: Ji Ho MOON, Jong Woo PARK, Dae Youn CHO, Young Tae CHOI
  • Patent number: 10987397
    Abstract: When a catechin-free tea water according to the present invention is contained in a cosmetic or pharmaceutical composition, enzymes are inactivated and catechin contained in tea leaves is removed by steaming unprocessed raw tea leaves, thereby preventing the oxidation of tea water. Therefore, a composition containing the tea water according to the present invention can prevent offensive odor generation or discoloration of the composition, thereby enabling the stable use thereof in various industrial fields such as food, cosmetics and medicine. In addition, plenty of skin helpful ingredients, contained in raw tea leaves, can be contained, and thus excellent skin barrier function recovery or skin moisturization effects can be provided.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: April 27, 2021
    Assignee: AMOREPACIFIC CORPORATION
    Inventors: Se Jin Yoo, Seon Su Han, Hyang Tae Choi, Song Seok Shin
  • Publication number: 20210104558
    Abstract: A display device is provided.
    Type: Application
    Filed: May 15, 2020
    Publication date: April 8, 2021
    Inventors: June Hwan KIM, Tae Young KIM, Jong Woo PARK, Young Tae CHOI, Hyun Cheol HWANG, Ki Ju IM
  • Patent number: 10971560
    Abstract: Disclosed herein are a display device, an apparatus for testing a display device, and a method for testing a display device. A display device includes a first substrate having a display area and a non-display area defined thereon, the non-display area being on an outer side of the display area. The non-display area may include a plurality of test pads and a first dummy thin-film transistor electrically connected to the test pads. The first dummy thin-film transistor includes a dummy gate electrode, and a dummy source electrode and a dummy drain electrode insulated from the gate electrode and spaced apart from each other. A bending area is defined on the first substrate that at least partially traverses the display area and the non-display area, the bending area overlaps the first dummy thin-film transistor.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: April 6, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyo Jung Kim, June Hwan Kim, Jong Woo Park, Dae Guen Choi, Jae Sik Son, Young Tae Choi
  • Patent number: 10963057
    Abstract: Provided is a haptic feedback button, which includes: a substrate; a lower electrode provided on an upper portion of the substrate, and formed by patterning a ground electrode and a touch sensing electrode; an upper electrode, provided above the lower electrode with an interval from the lower electrode, to which a driving voltage is applied; and a cover provided on an upper portion of the upper electrode, wherein a piezoelectric polymer is provided on an upper portion of the lower electrode or a lower portion of the upper electrode so that fretting vibration may be generated when the piezoelectric polymer is in close contact with the lower electrode or the upper electrode that are disposed to face each other.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: March 30, 2021
    Assignee: CHUNGANG UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventor: Seung Tae Choi
  • Patent number: 10952169
    Abstract: The present invention relates to a 5th-generation (5G) or pre-5G communication system to be provided in order to support a higher data transmission rate than a beyond 4th-generation (4G) communication system such as long term evolution (LTE). The present invention relates to a signal transmission method of a radio frequency (RF) processing device, the method comprising the steps of: generating a pulse signal including a control signal and a clock signal for obtaining synchronization with another RF processing device, which is connected through an interface; and transmitting, to the another RF processing device, at least one from among the pulse signal, a RF signal for communication with a base station, and a power signal for supplying power to the another RF processing device, wherein the clock signal and the control signal are assigned to different time units, and the pulse signal, the RF signal and the power signal are signals of different frequency bands.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: March 16, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dae-Young Lee, Chul-Woo Byeon, Ju-Ho Son, Jeong-Ho Lee, Sun-Kyu Choi, Sung-Tae Choi
  • Publication number: 20210048454
    Abstract: An integrated current-measuring apparatus including a printed circuit board, a shunt resistor including a resistive element having a preset resistance and terminals extending from both sides of the resistive element, the shunt resistor being attached to a bottom surface of the printed circuit board, and a Hall sensor mounted on a top surface of the printed circuit board to face the shunt resistor with the printed circuit board being interposed between the Hall sensor and the shunt resistor.
    Type: Application
    Filed: November 19, 2019
    Publication date: February 18, 2021
    Applicant: LG Chem, Ltd.
    Inventor: Jong-Tae Choi
  • Patent number: 10877521
    Abstract: A display device includes a flexible substrate, a display element on the flexible substrate and including a thin film transistor, a metal layer disposed at a lower portion of the flexible substrate, and an air layer formed between the flexible substrate and the metal layer.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: December 29, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyo Jung Kim, Tae Young Kim, Jong Woo Park, Dae Youn Cho, Ki Ju Im, Young Tae Choi
  • Patent number: 10858735
    Abstract: Alignment systems employing actuators provide relative displacement between lid assemblies of process chambers and substrates, and related methods are disclosed. A process chamber includes chamber walls defining a process volume in which a substrate may be placed and the walls support a lid assembly of the process chamber. The lid assembly contains at least one of an energy source and a process gas dispenser. Moreover, an alignment system may include at least one each of a bracket, an interface member, and an actuator. By attaching the bracket to the chamber wall and securing the interface member to the lid assembly, the actuator may communicate with the bracket and the interface member to provide relative displacement between the chamber wall and the lid assembly. In this manner, the lid assembly may be positioned relative to the substrate to improve process uniformity across the substrate within the process chamber.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: December 8, 2020
    Assignee: Applied Materials, Inc.
    Inventors: Danny D. Wang, Jason Michael Lamb, Jun Tae Choi, Rupankar Choudhury, Zhong Qiang Hua, Juan Carlos Rocha-Alvarez
  • Patent number: 10854143
    Abstract: An organic light-emitting display device includes a display unit having a plurality of pixel units. The display device also includes a timing controller for calculating a black bias pixel ratio (BBPR) of the display unit based on image signals provided by an external source and for generating a control signal based on the BBPR. The BBPR is the ratio of a number of pixel units in a black state to a total number of pixel units. A power supply unit provides a driving voltage to the display unit based on the control signal from the timing controller, wherein the power supply unit provides a first driving voltage to the display unit when the BBPR is less than a reference value and provides a second driving voltage, which is higher than the first driving voltage, otherwise.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: December 1, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dae Youn Cho, Tae Young Kim, Hee Jin Kim, Jong Woo Park, Young Tae Choi
  • Publication number: 20200327850
    Abstract: A pixel includes a light emitting device, a first transistor for controlling an amount of current flowing from a first power source to a second power source via the light emitting device, in response to a voltage applied to a first node, a second transistor coupled between a data line and a second node corresponding to a first electrode of the first transistor, and including a gate electrode coupled to a first scan line, a third transistor coupled between the first node and a third node corresponding to a second electrode of the first transistor, and including a gate electrode coupled to the first scan line, and a fourth transistor coupled between the third transistor and the third node, and configured to maintain a turn-on state.
    Type: Application
    Filed: March 10, 2020
    Publication date: October 15, 2020
    Inventors: Dae Youn Cho, Ji Ho Moon, Jong Woo Park, Young Tae Choi
  • Patent number: 10763744
    Abstract: Disclosed are a PFC controller and a method of controlling the PFC controller. The PFC controller can include: a voltage controller configured to control a PFC output terminal voltage using a PFC output terminal voltage value and a PFC output terminal requirement voltage value; a current controller configured to control a PFC input terminal current by deriving a PFC input terminal requirement current value using an output of the voltage controller and by deriving a PFC duty using the PFC input terminal requirement current value and a PFC input terminal current value; and a distortion compensator configured to monitor an input voltage of an input power source, determine whether the input voltage is distorted, and prevent a divergence of the PFC input terminal current by transmitting a distortion frequency to the current controller when the input voltage is distorted.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: September 1, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Gi Bong Son, Gyu Tae Choi, Hui Sung Jang, Hyun Wook Seong
  • Patent number: 10759292
    Abstract: A current stabilization method performed by a vehicle charging apparatus, which includes a power factor corrector for correcting a power factor of an alternating current (AC) power source, vehicle charging apparatus converting an AC voltage of the AC power source into a direct current (DC) voltage to charge a vehicle battery, may include downwardly-adjusting a current control bandwidth of the power factor corrector when the adjusting of the current control bandwidth of the power factor corrector is requested.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: September 1, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Hui Sung Jang, Gyu Tae Choi, Gi Bong Son, Hyun Wook Seong
  • Publication number: 20200258453
    Abstract: A display device includes: a substrate; a gate pattern disposed on the substrate; an oxide semiconductor layer disposed on the substrate, the oxide semiconductor layer includes a channel region that overlaps with the gate pattern; and an insulating film disposed on the gate pattern, the insulating film includes majority carrier supporting ions, wherein the gate pattern includes a plurality of gate holes, wherein the gate holes are formed inside a region of the gate pattern that does not overlap with the channel region of the oxide semiconductor layer, and wherein the channel region of the oxide semiconductor layer includes the majority carrier supporting ions.
    Type: Application
    Filed: February 10, 2020
    Publication date: August 13, 2020
    Inventors: Ki Ju Im, Tae Young Kim, Hyo Jung Kim, Jong Woo Park, Young Tae Choi, Hyun Cheol Hwang
  • Publication number: 20200243006
    Abstract: A display device includes a plurality of pixels. Each pixel includes a first transistor that controls an amount of current received from a first power supply voltage line connected via a second node to an organic light emitting diode in response to a voltage of a first node, a second transistor connected between a data line and the second node and that includes a first gate electrode connected to a first scan line, a light emitting line connected to a gate electrode of at least one light emitting transistor located in a current path between the first power supply voltage line and the organic light emitting diode, and a seventh transistor connected between one of at least one second gate electrode of the second transistor and the light emitting line. Accordingly, a threshold voltage of a switching transistor included in each of the plurality of pixels may be negatively shifted.
    Type: Application
    Filed: September 11, 2019
    Publication date: July 30, 2020
    Inventors: Hyo Jung KIM, Tae Young KIM, Yong Sung Park, Jong Woo Park, Mi Seon SEO, Keun Soo LEE, Ki Ju IM, Dae Youn CHO, Young Tae CHOI, Hyun Cheol HWANG
  • Patent number: D904398
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: December 8, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong Woo Park, Ju Hee Lee, Dae Youn Cho, Young Tae Choi