Patents by Inventor Seong Hoon Lee

Seong Hoon Lee 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: 20220099873
    Abstract: A polarizing plate and an optical display including the same are provided. A polarizing plate includes: a polarizer; and a first protective layer and a second protective layer sequentially stacked on a surface of the polarizer, and the second protective layer includes a positive C retardation layer, the positive C retardation layer having a thickness of about 10 ?m or less, an index of refraction of about 1.50 to about 1.55, and a glass transition temperature (Tg) of about 150° C. to about 250° C.
    Type: Application
    Filed: September 17, 2021
    Publication date: March 31, 2022
    Inventors: A Ra JO, Beom Deok LEE, Seon Gyeong JEONG, Seong Hoon LEE, Seung Mi SHIN, Wan Taek HONG
  • Publication number: 20220099876
    Abstract: An optical laminate and an optical display apparatus including the same are provided. An optical laminate includes: a polarizer; and a first protective layer and a retardation layer stacked on a light incidence surface of the polarizer, the retardation layer including at least a positive C layer, and a laminate of the first protective layer and the retardation layer having a photoelastic coefficient of about 2×10?13 cm2/dyne or less and a modulus of about 2,000 MPa to about 4,000 MPa, as measured in an absorption axis direction of the polarizer in the optical laminate.
    Type: Application
    Filed: September 24, 2021
    Publication date: March 31, 2022
    Inventors: Seung Mi SHIN, Beom Deok LEE, Seong Hoon LEE, Seon Gyeong JEONG, A Ra JO, Wan Taek HONG
  • Publication number: 20210397043
    Abstract: A polarizing plate for IPS mode and an optical display apparatus including the same are provided. A polarizing plate includes: a polarizer; a first protective layer on an upper surface of the polarizer; and a second protective layer on a lower surface of the polarizer, wherein, assuming an axis of the polarizer having a high index of refraction in an in-plane direction of the polarizer is a reference axis (0°), an angle of an axis of the first protective layer having a low index of refraction in the in-plane direction thereof is in a range of about ?5° to +5°, the first protective layer has an in-plane retardation Re of about 5,000 nm or more at a wavelength of 550 nm, the second protective layer includes a positive C plate layer, and the second protective layer satisfies at least one of Relations 1 and 2.
    Type: Application
    Filed: June 16, 2021
    Publication date: December 23, 2021
    Inventors: A Ra JO, Beom Deok LEE, Seung Mi SHIN, Seong Hoon LEE, Wan Taek HONG
  • Patent number: 11016237
    Abstract: An optical film for improving contrast ratio, a polarizing plate including the same, and a liquid crystal display including the same are disclosed. The optical film for improving contrast ratio includes: a base layer and a contrast ratio improvement layer formed on the base layer, wherein the contrast ratio improvement layer includes a high refractive index resin layer including a patterned portion composed of one or more engraved patterns and a flat portion formed between the engraved patterns and a low refractive index resin layer directly formed on the patterned portion, the engraved patterns have a base angle of 75° to about 90°, and the patterned portion has a P/W value of greater than about 1 to about 10 or less (P is the cycle of the patterned portion (unit: ?m) and W is the maximum width of the engraved pattern (unit: ?m)).
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: May 25, 2021
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jeong Ho Lee, Young Oh, Seong Hoon Lee, Young Hyun Ju
  • Patent number: 10880042
    Abstract: An apparatus includes first and second receiver circuits and a decision circuit. The first receiver circuit is configured to generate a first data symbol from a particular input data symbol of a plurality of input data symbols included in an input signal. The second receiver circuit is configured to generate a second data symbol from the particular input data symbol. The decision circuit is configured to select, using respective values of one or more previous output data symbols, either the first or second data symbol as a current output data symbol. In response to a change in value between successive input data symbols, the first and second receiver circuits are configured to generate the first and second data symbols with respective data valid windows with different durations.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: December 29, 2020
    Assignee: Apple Inc.
    Inventors: Mitesh D. Katakwar, Seong Hoon Lee, Huy M. Nguyen
  • Publication number: 20200393604
    Abstract: A polarizing plate includes: a polarizer; a pattern layer on one surface of the polarizer, the pattern layer including a first refractive index layer having at least one engraved pattern and a second refractive index layer having a filling pattern filling at least a portion of the engraved pattern, the first refractive index layer having a higher refractive index than the second refractive index layer; and a first protective layer. The polarizing plate has a structure in which the polarizer, the second refractive index layer, the first refractive index layer and the first protective layer are sequentially stacked in that order, or in which the polarizer, the first protective layer, the second refractive index layer and the first refractive index layer are sequentially stacked in that order. The first protective layer includes a base film including at least one resin of triacetylcellulose, polyethylene terephthalate, cyclic olefin polymer, and acrylic resins.
    Type: Application
    Filed: August 26, 2020
    Publication date: December 17, 2020
    Inventors: Seong Hoon Lee, Young Oh, Jeong Ho Lee, Young Hyun Ju
  • Publication number: 20200389254
    Abstract: An apparatus includes first and second receiver circuits and a decision circuit. The first receiver circuit is configured to generate a first data symbol from a particular input data symbol of a plurality of input data symbols included in an input signal. The second receiver circuit is configured to generate a second data symbol from the particular input data symbol. The decision circuit is configured to select, using respective values of one or more previous output data symbols, either the first or second data symbol as a current output data symbol. In response to a change in value between successive input data symbols, the first and second receiver circuits are configured to generate the first and second data symbols with respective data valid windows with different durations.
    Type: Application
    Filed: May 11, 2020
    Publication date: December 10, 2020
    Inventors: Mitesh D. Katakwar, Seong Hoon Lee, Huy M. Nguyen
  • Patent number: 10775539
    Abstract: A polarizing plate includes: a polarizer; a pattern layer on one surface of the polarizer, the pattern layer including a first refractive index layer having at least one engraved pattern and a second refractive index layer having a filling pattern filling at least a portion of the engraved pattern, the first refractive index layer having a higher refractive index than the second refractive index layer; and a first protective layer. The polarizing plate has a structure in which the polarizer, the second refractive index layer, the first refractive index layer and the first protective layer are sequentially stacked in that order, or in which the polarizer, the first protective layer, the second refractive index layer and the first refractive index layer are sequentially stacked in that order. The first protective layer includes a base film including at least one resin of triacetylcellulose, polyethylene terephthalate, cyclic olefin polymer, and acrylic resins.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: September 15, 2020
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Seong Hoon Lee, Young Oh, Jeong Ho Lee, Young Hyun Ju
  • Patent number: 10651979
    Abstract: An apparatus includes first and second receiver circuits and a decision circuit. The first receiver circuit is configured to generate a first data symbol from a particular input data symbol of a plurality of input data symbols included in an input signal. The second receiver circuit is configured to generate a second data symbol from the particular input data symbol. The decision circuit is configured to select, using respective values of one or more previous output data symbols, either the first or second data symbol as a current output data symbol. In response to a change in value between successive input data symbols, the first and second receiver circuits are configured to generate the first and second data symbols with respective data valid windows with different durations.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: May 12, 2020
    Assignee: Apple Inc.
    Inventors: Mitesh D. Katakwar, Seong Hoon Lee, Huy M. Nguyen
  • Patent number: 10566963
    Abstract: A method and apparatus for receiving reduced voltage swing signals is disclosed. A first amplifier may generate a first intermediate signal based on a difference between voltage levels of a first and second input signals, and a second amplifier may generate a second intermediate signal based on a difference in the voltage levels between the second and first input signals. A regenerative amplifier may increase a difference in the voltage level of the first and second intermediate signals using regenerative feedback and the voltage levels of the first and second input signals. A latch circuit may generate first and second output signals using the first and second intermediate signals.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: February 18, 2020
    Assignee: Apple Inc.
    Inventors: Huy M. Nguyen, Seong Hoon Lee
  • Publication number: 20190391318
    Abstract: An optical film for improving contrast ratio, a polarizing plate including the same, and a liquid crystal display including the same are disclosed. The optical film for improving contrast ratio includes: a base layer and a contrast ratio improvement layer formed on the base layer, wherein the contrast ratio improvement layer includes a high refractive index resin layer including a patterned portion composed of one or more engraved patterns and a flat portion formed between the engraved patterns and a low refractive index resin layer directly formed on the patterned portion, the engraved patterns have a base angle of 75° to about 90°, and the patterned portion has a P/W value of greater than about 1 to about 10 or less (P is the cycle of the patterned portion (unit: ?m) and W is the maximum width of the engraved pattern (unit: ?m)).
    Type: Application
    Filed: September 6, 2019
    Publication date: December 26, 2019
    Inventors: Jeong Ho LEE, Young OH, Seong Hoon LEE, Young Hyun JU
  • Publication number: 20190326896
    Abstract: A method and apparatus for receiving reduced voltage swing signals is disclosed. A first amplifier may generate a first intermediate signal based on a difference between voltage levels of a first and second input signals, and a second amplifier may generate a second intermediate signal based on a difference in the voltage levels between the second and first input signals. A regenerative amplifier may increase a difference in the voltage level of the first and second intermediate signals using regenerative feedback and the voltage levels of the first and second input signals. A latch circuit may generate first and second output signals using the first and second intermediate signals.
    Type: Application
    Filed: April 29, 2019
    Publication date: October 24, 2019
    Inventors: Huy M. Nguyen, Seong Hoon Lee
  • Patent number: 10408989
    Abstract: An optical film for improving contrast ratio, a polarizing plate including the same, and a liquid crystal display including the same are disclosed. The optical film for improving contrast ratio includes: a base layer and a contrast ratio improvement layer formed on the base layer, wherein the contrast ratio improvement layer includes a high refractive index resin layer including a patterned portion composed of one or more engraved patterns and a flat portion formed between the engraved patterns and a low refractive index resin layer directly formed on the patterned portion, the engraved patterns have a base angle of 75° to about 90°, and the patterned portion has a P/W value of greater than about 1 to about 10 or less (P is the cycle of the patterned portion (unit: ?m) and W is the maximum width of the engraved pattern (unit: ?m)).
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: September 10, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jeong Ho Lee, Young Oh, Seong Hoon Lee, Young Hyun Ju
  • Patent number: 10359168
    Abstract: A bi-functional headlamp for a vehicle is provided. The bi-functional headlamp implements a high beam mode and a low beam mode by adjusting a movement of a shield of a headlamp. The bi-functional headlamp reduces the occurrence of impact and noise caused by an operation of opening and closing the rotary shield by maintaining contact between a shock absorber component that reduces operational noise of the rotary shield and one side of the rotary shield.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: July 23, 2019
    Assignee: Hyundai Motor Company
    Inventors: Seong Hoon Lee, Young Sub Oh, Su Ho Bae
  • Patent number: 10304530
    Abstract: Systems, apparatuses, and methods for generating a reference voltage are described. In various embodiments, an interface between a memory and a processor uses a reference voltage generator to generate a reference voltage for a single pin or a small group of pins. The generator generates a default reference voltage from a first tap in a resistor ladder, injects current with a current controller into a second tap of the resistor ladder when the generator receives an indication to generate a larger reference voltage, and draws current from a third tap of the resistor ladder when the generator receives an indication to generate a smaller reference voltage. The generator also generates a high threshold voltage independent of a low threshold voltage after calibration.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: May 28, 2019
    Assignee: Apple Inc.
    Inventors: Huy M. Nguyen, Seong Hoon Lee
  • Patent number: 10277216
    Abstract: A method and apparatus for receiving reduced voltage swing signals is disclosed. A first amplifier may generate a first intermediate signal based on a difference between voltage levels of a first and second input signals, and a second amplifier may generate a second intermediate signal based on a difference in the voltage levels between the second and first input signals. A regenerative amplifier may increase a difference in the voltage level of the first and second intermediate signals using regenerative feedback and the voltage levels of the first and second input signals. A latch circuit may generate first and second output signals using the first and second intermediate signals.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: April 30, 2019
    Assignee: Apple Inc.
    Inventors: Huy M. Nguyen, Seong Hoon Lee
  • Patent number: 10236052
    Abstract: A current sense amplifier may include one or more clamping circuits coupled between differential output nodes of the amplifier. The clamping circuits may be enabled during at least a portion of the time that the sense amplifier is sensing the state of a memory cell coupled to a differential input of the sense amplifier. The clamping circuits may be disabled during the time that the sense amplifier is sensing the state of a memory cell at different times in a staggered manner. The clamping circuits may be effecting in making the current sense amplifier less sensitive to noise signals.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: March 19, 2019
    Assignee: Micron Technology, Inc.
    Inventors: Onegyun Na, Jongtae Kwak, Seong-Hoon Lee, Hoon Choi
  • Publication number: 20190066777
    Abstract: Systems, apparatuses, and methods for generating a reference voltage are described. In various embodiments, an interface between a memory and a processor uses a reference voltage generator to generate a reference voltage for a single pin or a small group of pins. The generator generates a default reference voltage from a first tap in a resistor ladder, injects current with a current controller into a second tap of the resistor ladder when the generator receives an indication to generate a larger reference voltage, and draws current from a third tap of the resistor ladder when the generator receives an indication to generate a smaller reference voltage. The generator also generates a high threshold voltage independent of a low threshold voltage after calibration.
    Type: Application
    Filed: August 23, 2017
    Publication date: February 28, 2019
    Inventors: Huy M. Nguyen, Seong Hoon Lee
  • Patent number: 10174899
    Abstract: Disclosed is an aspherical lens module of a vehicle headlamp configured such that a position light function is added to the existing functions of a low beam or high beam without increasing the size of the lamp module. Further, the aspherical lens module of a headlamp is configured such that the quantity of required light of a low beam or high beam is not reduced when the position light function is added to them.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: January 8, 2019
    Assignee: Hyundai Motor Company
    Inventors: Seong Hoon Lee, Kyu Geol Lee
  • Patent number: D955618
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: June 21, 2022
    Assignees: Kia Motors Corporation, Hyundai Motor Company
    Inventors: Seong Hoon Lee, Jae Hyeok Ho