Patents by Inventor Tae Hwang

Tae Hwang 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).

  • CHIP ON FILM PACKAGE AND DISPLAY DEVICE INCLUDING THE SAME
    Publication number: 20200303276
    Abstract: A chip on film package includes; a flexible base film having a first surface and a second surface opposite to each other, and having a chip mounting region on the first surface; a plurality of wirings extending in a first direction toward the chip mounting region; a semiconductor chip mounted in the chip mounting region on the first surface of the base film and electrically connected to the wirings; a pair of first heat dissipation members on the first surface of the base film and spaced apart from the semiconductor chip, and extending in a second direction perpendicular to the first direction; and a second heat dissipation member on the first surface of the base film and covering the semiconductor chip and the pair of first heat dissipation members.
    Type: Application
    Filed: November 4, 2019
    Publication date: September 24, 2020
    Inventors: Seung-Tae Hwang, Jae-Choon Kim, Kyung-Suk Oh, Woon-Bae Kim, Jae-Min Jung
  • SEMICONDUCTOR DEVICE FOR MONITORING A REVERSE VOLTAGE
    Publication number: 20200292591
    Abstract: A semiconductor device for monitoring a reverse voltage is provided. The semiconductor device includes an intellectual property having an input node and an output node; a passive component connected between the output node and a potential; a monitoring circuit connected to the input node and the output node and powered by a driving power, the monitoring circuit monitoring a difference between an input level at the input node and an output level at the output node to detect a reverse voltage across the intellectual property. The driving power is provided by the output node.
    Type: Application
    Filed: May 26, 2020
    Publication date: September 17, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun-han CHOI, Tae-hwang KONG, Kwang-ho KIM, Sang-ho KIM, Se-Ki KIM, Jun-hyeok YANG, Sung-yong LEE, Yong-jin LEE
  • WIRELESS POWER TRANSMITTER CAPABLE OF AUTOMATIC ADJUSTMENT ACCORDING TO IMPEDANCE CHANGE
    Publication number: 20200274397
    Abstract: Provided is a wireless power transmitting unit capable of auto-tuning according to impedance change. The wireless power transmitting unit according to an embodiment can stabilize the operation of the amplifier by changing the resonance frequency of the resonator without measuring the phase information about the resonator.
    Type: Application
    Filed: June 12, 2017
    Publication date: August 27, 2020
    Applicant: MAPS, INC.
    Inventors: Jong Tae HWANG, Ik Soo JEON, Dong Su LEE, Hyun Ick SHIN, Joon RHEE
  • SWING CONTROL GATE DRIVER DEVICE
    Publication number: 20200274533
    Abstract: A swing regulated gate driver apparatus is provided. The swing regulated gate driver apparatus according to one embodiment includes a regulator configured to regulate a power voltage of a gate driver to a regulator output voltage at a predetermined level, and a gate driver configured to apply a variable swing output voltage between a ground voltage and the regulator output voltage to a receiver element to drive the receiver element.
    Type: Application
    Filed: February 21, 2018
    Publication date: August 27, 2020
    Applicant: MAPS, INC.
    Inventors: Jong Tae HWANG, Sung Min PARK, Ki Woong JIN, Hyun Ick SHIN, Joon RHEE
  • COMMUNICATION DEVICE AND ELECTRONIC DEVICE HAVING PROTECTIVE FUNCTION
    Publication number: 20200274394
    Abstract: Provided are a communication device and an electronic device each having a protective function. In one embodiment, the communication device includes a transceiving device configured to transmit or receive a signal, a communication circuit configured to be selectively connected to the transceiving device, and a wireless power input detector configured to protect the communication circuit from a wireless power signal by detecting whether the signal is the wireless power signal which is input for charging and generating a control signal for selectively disconnecting the communication circuit from the transceiving device.
    Type: Application
    Filed: April 6, 2017
    Publication date: August 27, 2020
    Applicant: Maps, Inc.
    Inventors: Joon RHEE, Jong Tae HWANG, Hyun Ick SHIN, Ki Woong JIN
  • WIRELESS POWER RECEIVER CONTROLLING MAGNITUDE OF COMMUNICATION SIGNAL
    Publication number: 20200274402
    Abstract: Disclosed is a wireless power receiver that controls a level of a communication signal. A wireless power receiver according to an embodiment includes a resonator for receiving wireless power, a rectifier for converting an alternating current power received from the resonator to a direct current power and outputting a rectifier output voltage, a switch for receiving a communication signal and controlling a rectifier output voltage through switching, and a regulator for adjusting a voltage change of a rectifier output voltage by modulating a communication signal.
    Type: Application
    Filed: July 27, 2017
    Publication date: August 27, 2020
    Applicant: MAPS, INC.
    Inventors: Jong Tae HWANG, Ki-Woong JIN, Sung Min PARK, Gi Won KANG, Hyun Ick SHIN, Joon RHEE
  • APPARATUS AND METHOD FOR MONITORING WIRELESS POWER TRANSMITTER
    Publication number: 20200271704
    Abstract: Provided are an apparatus and method for monitoring a wireless power transmitter. The apparatus for monitoring the wireless power transmitter includes a magnitude information detector included in a resonator of the wireless power transmitter and configured to detect magnitude information of voltages at opposite ends of an impedance device connected to the resonator, a phase difference detector configured to detect phase difference information of the voltages at the opposite ends of the impedance device, and a controller configured to monitor a state of the resonator on the basis of the magnitude information of the voltages at the opposite ends of the impedance device and the phase difference information, which are detected by the magnitude information detector and the phase difference detector.
    Type: Application
    Filed: April 7, 2017
    Publication date: August 27, 2020
    Applicant: Maps, Inc.
    Inventors: Jong Tae HWANG, Hyun Ick SHIN, Sang-O JEON, Ik-Gyoo SONG, Ik Soo JEON, Joon RHEE
  • WIRELESS POWER RECEIVING UNIT WITH SELF-REGULATING RECTIFIER
    Publication number: 20200274395
    Abstract: Provided is a wireless power receiving unit with a self-regulation rectifier. In one embodiment, the wireless power receiving unit includes a resonator configured to receive wireless power; and a self-regulation rectifier unit including a rectifier configured to apply a rectifier output voltage to a load by converting alternating-current (AC) power received from the resonator into direct-current (DC) power, and a switching device located at a rear end of the rectifier and configured to self-regulate the rectifier output voltage.
    Type: Application
    Filed: April 7, 2017
    Publication date: August 27, 2020
    Applicant: Maps, Inc.
    Inventors: Jong Tae HWANG, Hyun Ick SHIN, Sung Min PARK, Min Jung KO, Dong Su LEE, Jong Hoon LEE, Ki Woong JIN, Joon RHEE
  • Lithium Cobalt-Based Positive Electrode Active Material, Preparation Method Thereof, Positive Electrode and Secondary Battery Including the Same
    Publication number: 20200259172
    Abstract: A lithium cobalt-based positive electrode active material is provided. The lithium cobalt-based positive electrode active material includes a core portion including a lithium cobalt-based oxide represented by Formula 1 and a shell portion including a lithium cobalt-based oxide represented by Formula 2, wherein the lithium cobalt-based positive electrode active material includes 2500 ppm or more, preferably 3000 ppm or more of a doping element M based on the total weight of the positive electrode active material. An inflection point does not appear in a voltage profile measured during charging/discharging a secondary battery including the lithium cobalt-based positive electrode active material.
    Type: Application
    Filed: November 13, 2018
    Publication date: August 13, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Chi Ho Jo, Min Kyu You, Sung Bin Park, Hyuck Hur, Jin Tae Hwang, Wang Mo Jung
  • Positive Electrode Active Material Precursor for Secondary Battery, Positive Electrode Active Material, and Lithium Secondary Battery Including the Same
    Publication number: 20200251731
    Abstract: The present invention provides a positive electrode active material precursor for a secondary battery which includes primary particles of Co3O4 or Co0OH, wherein the primary particle contains a doping element in an amount of 3,000 ppm or more, and has an average particle diameter (D50) of 15 pm or more, and a positive electrode active material for a secondary battery which includes particles of a lithium cobalt-based oxide, wherein the primary particle contains a doping element in an amount of 2,500 ppm or more, and has an average particle diameter (D50) of 15 ?m or more.
    Type: Application
    Filed: September 19, 2018
    Publication date: August 6, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Min Kyu You, Chi Ho Jo, Sung Bin Park, Hyuck Hur, Jin Tae Hwang, Wang Mo Jung
  • Method of controlling energy storage and apparatuses performing the same
    Patent number: 10732589
    Abstract: A method of controlling an energy storage and an energy storage controlling apparatus are disclosed. The method may include dividing an energy storage of large capacity into virtual energy storages corresponding to respective users based on a required energy amount and a period of use of an energy storage of each of the users, and integrally controlling, for each time, the virtual energy storages corresponding to the respective users based on a management schedule of the energy storage of each of the users.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: August 4, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Tae in Hwang, Il Woo Lee
  • ZERO VOLTAGE SWITCHING CONTROL DEVICE OF AMPLIFIER, AND WIRELESS POWER TRANSMISSION DEVICE
    Publication number: 20200244236
    Abstract: Disclosed are a zero voltage switching control device of an amplifier, and a wireless power transmission device. The zero voltage switching control device, according to one embodiment of the present invention, comprises: a switch voltage detection unit which, when a first switch of an amplifier is turned on, detects a drain voltage and generates a switching voltage; an error amplification unit which receives the switching voltage as an input and amplifies an error by comparing the switching voltage with a reference voltage; a loop filter which receives an output voltage of the error amplification unit as an input, and outputs a control voltage; and a duty control unit which, according to the control voltage, controls a duty of a first switch driving signal so that the first switch undergoes zero voltage switching.
    Type: Application
    Filed: September 20, 2016
    Publication date: July 30, 2020
    Applicant: MAPS, INC
    Inventors: Jong Tae HWANG, Dong Su LEE, Ki-Woong JIN, Min Jung KO, Hyun Ick SHIN, Joon RHEE
  • Positive Electrode Material for Lithium Secondary Battery, Method of Preparing the Same, and Positive Electrode for Lithium Secondary Battery and Lithium Secondary Battery Which Includes the Positive Electrode Material
    Publication number: 20200235381
    Abstract: The present disclosure relates to a positive electrode material which includes a first positive electrode active material, and a second positive electrode active material in the form of a single particle, wherein an amount of lithium impurities on a surface of the second positive electrode active material is 0.14 wt % or less based on a total weight of the second positive electrode active material, and at least one of nickel, cobalt, and manganese included in the second positive electrode active material has a concentration gradient gradually changing from the center of the particle to a surface thereof, a method of preparing the positive electrode material, and a positive electrode for a lithium secondary battery and a lithium secondary battery which include the positive electrode material.
    Type: Application
    Filed: September 21, 2018
    Publication date: July 23, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Young Uk Park, Tae Gu Yoo, Jin Tae Hwang, Wang Mo Jung, Sung Bin Park
  • Dual band wireless power reception unit
    Patent number: 10714975
    Abstract: A dual band wireless power reception unit is disclosed. The wireless power reception unit according to one embodiment comprises: a first resonator; a second resonator connected to the first resonator in parallel; a single rectifier having, as an input, a node in which outputs of the first resonator and the second resonator are connected to each other in parallel; at least one switch having a first output, a second output, and an input, wherein the second output is connected to the ground; at least one capacitor connected to the second resonator in parallel, and of which one terminal is connected to the first output of the switch and the other terminal is connected to the rectifier input; and a frequency sensor sensing an input frequency from the rectifier input, and of which an output is connected to the input of the switch.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: July 14, 2020
    Assignee: MAPS, INC.
    Inventors: Jong-Tae Hwang, Sung-Min Park, Ki-Woong Jin, Sang-O Jeon, Ik-Gyoo Song, Hyun-Ick Shin, Joon Rhee
  • Charge control circuit using battery voltage tracking, and a device having the same
    Patent number: 10714945
    Abstract: A charge control circuit includes: a charge current control circuit configured to receive an input voltage at a first node, output a sensing current to a second node, and turn on a power transistor; a comparator configured to compare a voltage level of the second node with a voltage level of a third node, wherein the third node receives a charging current from the power transistor; a current mirror configured to generate a mirror current corresponding to the sensing current; and an amplifier configured to receive a first feedback voltage based on the mirror current, and amplify a difference between the first feedback voltage and a reference voltage to generate a switch control signal, wherein in response to the switch control signal and a plurality of control signals, the charge current control circuit is configured to decrease the sensing current and turn on the power transistor.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: July 14, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tae Hwang Kong, Sun Kyu Lee, Sung Yong Lee, Dae Yong Kim, Sang Ho Kim
  • Apparatus for protecting wireless communication device and wireless communication device comprising same
    Patent number: 10714981
    Abstract: Disclosed are an apparatus for protecting a wireless communication device and a wireless communication device comprising the same. The protection apparatus according to one embodiment comprises: a determination unit for detecting a power supply voltage of a wireless communication device for wirelessly transmitting and receiving a signal by generating a magnetic field or reacting therewith, and determining a wireless charging state from the outside when an increase in the power supply voltage, which is greater than or equal to a preset threshold, is detected; and a protection unit for protecting the wireless communication device from a power signal for wireless charging when the wireless charging condition is determined through the determination unit.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: July 14, 2020
    Assignee: MAPS, INC.
    Inventors: Jong Tae Hwang, Sung Min Park, Min Jung Ko, Dong Su Lee, Jong Hoon Lee, Ki-Woong Jin, Hyun Ick Shin, Joon Rhee
  • Positive Electrode Active Material for Secondary Battery, Method for Preparing the Same, and Lithium Secondary Battery Including the Same
    Publication number: 20200220173
    Abstract: A positive electrode active material for a secondary battery is provided. The positive electrode active material being a lithium cobalt-based oxide includes a doping element M. A lithium cobalt-based oxide particle containing the doping element M in an amount of 3,000 ppm or more, wherein in a bulk portion corresponding to 90% of a core side among the radius from a core of the particle to a surface thereof, the doping element M in the lithium cobalt-based oxide particle is contained at a constant concentration, and in a surface portion from the surface of the particle to 100 nm in a core direction, the doping element M is contained at a concentration equal to or higher than that in the bulk portion and has a concentration in which the concentration thereof is gradient gradually decreased in the core direction from the surface of the particle.
    Type: Application
    Filed: August 29, 2018
    Publication date: July 9, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Chi Ho Jo, Min Kyu You, Sung Bin Park, Hyuck Hur, Jin Tae Hwang, Wang Mo Jung
  • Positive Electrode Material for Lithium Secondary Battery, Method of Preparing the Same, and Positive Electrode for Lithium Secondary Battery and Lithium Secondary Battery Which Include the Positive Electrode Material
    Publication number: 20200212423
    Abstract: The present disclosure relates to a positive electrode material which includes a first positive electrode active material and a second positive electrode active material, wherein the second positive electrode active material has an electrical conductivity of 0.1 ?S/cm to 150 ?S/cm, which is measured after the second positive electrode active material is prepared in the form of a pellet by compressing the second positive electrode active material at a rolling load of 400 kgf to 2,000 kgf, a method of preparing the positive electrode material, and a positive electrode for a lithium secondary battery and a lithium secondary battery which include the positive electrode material.
    Type: Application
    Filed: September 19, 2018
    Publication date: July 2, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Young Uk Park, Tae Gu Yoo, Jin Tae Hwang, Wang Mo Jung, Sung Bin Park
  • Wireless power transfer standard selector of power receiving unit and method therefor
    Patent number: 10693328
    Abstract: A wireless power transfer standard selector of a power receiving device and a method therefor are disclosed. A wireless power transfer standard selector according to one embodiment comprises: a frequency sensor for sensing an input frequency of a rectifier; a boot attempt counter for counting and storing the number of bootings in which an output voltage of a power converter is generated and then disappears; and a selection unit for selecting a wireless power transfer standard method by using the input frequency sensed through the frequency sensor and/or the number of bootings counted through the boot attempt counter.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: June 23, 2020
    Assignee: MAPS, INC.
    Inventors: Jong Tae Hwang, Dong Su Lee, Jong Hoon Lee, Ki Woong Jin, Hyun Ick Shin, Joon Rhee
  • Semiconductor device for monitoring a reverse voltage
    Patent number: 10690703
    Abstract: A semiconductor device for monitoring a reverse voltage is provided. The semiconductor device includes an intellectual property having an input node and an output node; a passive component connected between the output node and a potential; a monitoring circuit connected to the input node and the output node and powered by a driving power, the monitoring circuit monitoring a difference between an input level at the input node and an output level at the output node to detect a reverse voltage across the intellectual property. The driving power is provided by the output node.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: June 23, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun-han Choi, Tae-hwang Kong, Kwang-ho Kim, Sang-ho Kim, Se-ki Kim, Jun-hyeok Yang, Sung-yong Lee, Yong-jin Lee