Patents by Inventor Woo-Jin Nam

Woo-Jin Nam 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: 20240140873
    Abstract: The sintered body including silicon oxide and carbon, wherein the sintered body has a D band peak at a wave number of 1,311 cm?1 to 1,371 cm?1 and a G band peak at a wave number of 1,572 cm?1 to 1,632 cm?1 in a Raman spectrum, and wherein the D band peak or the G band peak have a higher intensity than a fifth peak present at a wave number of 1,027 cm?1 to 1,087 cm?1 in the Raman spectrum, is disclosed.
    Type: Application
    Filed: September 18, 2023
    Publication date: May 2, 2024
    Applicant: SK enpulse Co., Ltd.
    Inventors: Kyung yeol MIN, Yongsoo CHOI, SungSic HWANG, Na Hyun NAM, Kyung In KIM, Jung Kun KANG, Woo Jin LEE
  • Patent number: 11330698
    Abstract: The objective of the present disclosure is to provide a method of expanding the sheath and bulk of plasma using dual high frequencies, in which the sheath and bulk of microwave-generated plasma are expanded. The method of expanding the sheath and bulk of plasma using dual high frequencies according to one embodiment of the present disclosure includes: a generation step of generating plasma by a microwave plasma generator; and an expansion step of expanding the sheath and bulk of the plasma by applying a radio-frequency (RF) bias to a radio-frequency electrode disposed at a predetermined distance from the microwave plasma generator.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: May 10, 2022
    Assignee: Postech Academy-Industry Foundation
    Inventors: Ji Mo Lee, Gun Su Yun, Jae Koo Lee, Seung Taek Lee, Woo Jin Nam, Won Seok Kim
  • Publication number: 20200389967
    Abstract: The objective of the present disclosure is to provide a method of expanding the sheath and bulk of plasma using dual high frequencies, in which the sheath and bulk of microwave-generated plasma are expanded. The method of expanding the sheath and bulk of plasma using dual high frequencies according to one embodiment of the present disclosure includes: a generation step of generating plasma by a microwave plasma generator; and an expansion step of expanding the sheath and bulk of the plasma by applying a radio-frequency (RF) bias to a radio-frequency electrode disposed at a predetermined distance from the microwave plasma generator.
    Type: Application
    Filed: August 28, 2018
    Publication date: December 10, 2020
    Inventors: Ji Mo LEE, Gun Su YUN, Jae Koo LEE, Seung Taek LEE, Woo Jin NAM, Won Seok KIM
  • Patent number: 10089934
    Abstract: Disclosed is an apparatus that prevents a degradation of image quality due to a deterioration of a driving apparatus in an organic electro-luminescence display device.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: October 2, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Woo-Jin Nam, In-Su Joo
  • Patent number: 9837014
    Abstract: A method of driving an organic light emitting diode display device having first to third sub-pixels and a white sub-pixel comprises judging a gray level of an image data; classifying the image data into a low gray level group, a middle gray level group and a high gray level group; displaying an image using the first to third sub-pixels except the white sub-pixel when the gray level of the image data is classified into the low gray level group; and displaying the image using the first to third sub-pixels and the white sub-pixel when the gray level of the image data is classified into one of the middle and high gray level groups.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: December 5, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Dae-Hyun Kim, Woo-Jin Nam
  • Patent number: 9666120
    Abstract: An organic light emitting display device including an emission unit and a pixel circuit unit. The emission unit includes an organic light emitting diode. The pixel circuit unit includes a driving transistor, at least one or more switching transistors, a capacitor, a light blocking unit, and an opening in which the light blocking layer is not formed. The light blocking unit includes a light blocking layer which blocks light input to the pixel circuit unit. The pixel circuit unit is configured to drive the emission unit and selectively block the light input to the pixel circuit unit.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: May 30, 2017
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Seon Mi Lee, Woo Jin Nam
  • Patent number: 9178048
    Abstract: Disclosed is a thin film transistor substrate which facilitates to improve output and transfer characteristics of thin film transistor, wherein the thin film transistor substrate comprises a thin film transistor comprising a lower gate electrode on a substrate, an active layer on the lower gate electrode, source and drain electrodes on the active layer, and an upper gate electrode on the source electrode, drain electrode and active layer, the upper gate electrode for covering a channel region defined by the source and drain electrodes; and a contact portion for electrically connecting the lower gate electrode with the upper gate electrode.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: November 3, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Jong Sik Shim, Woo Jin Nam, Hong Jae Shin, Min Kyu Chang
  • Patent number: 9105236
    Abstract: Disclosed herein is a light emitting display device capable of minimizing a difference in current driving capability between driving switching elements so as to improve image quality of the display device.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: August 11, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Jong-Sik Shim, Woo-Jin Nam, Min-Kyu Chang
  • Publication number: 20150187260
    Abstract: An organic light emitting display device including an emission unit and a pixel circuit unit. The emission unit includes an organic light emitting diode. The pixel circuit unit includes a driving transistor, at least one or more switching transistors, a capacitor, a light blocking unit, and an opening in which the light blocking layer is not formed. The light blocking unit includes a light blocking layer which blocks light input to the pixel circuit unit. The pixel circuit unit is configured to drive the emission unit and selectively block the light input to the pixel circuit unit.
    Type: Application
    Filed: December 3, 2014
    Publication date: July 2, 2015
    Applicant: LG Display Co., Ltd.
    Inventors: Seon Mi LEE, Woo Jin NAM
  • Publication number: 20150187261
    Abstract: A method of driving an organic light emitting diode display device having first to third sub-pixels and a white sub-pixel comprises judging a gray level of an image data; classifying the image data into a low gray level group, a middle gray level group and a high gray level group; displaying an image using the first to third sub-pixels except the white sub-pixel when the gray level of the image data is classified into the low gray level group; and displaying the image using the first to third sub-pixels and the white sub-pixel when the gray level of the image data is classified into one of the middle and high gray level groups.
    Type: Application
    Filed: December 24, 2014
    Publication date: July 2, 2015
    Applicant: LG Display Co., Ltd.
    Inventors: Dae-Hyun KIM, Woo-Jin NAM
  • Publication number: 20150124879
    Abstract: A device for performing intra prediction for an image is disclosed. The disclosed intra prediction device includes: a subtractor configured to perform a subtraction operation on a first reference value and a second reference value of a prediction target pixel; a multiplier configured to perform a multiplication operation on a parameter set for each angular mode and an output value of the subtractor; and an adder configured to perform an addition operation on a product of the first reference value multiplied by a predetermined constant and an output value of the multiplier, where an output value of the adder is a resultant value of intra prediction for the image according to an angular mode.
    Type: Application
    Filed: December 29, 2014
    Publication date: May 7, 2015
    Inventors: Seung-Soo Lee, Jong-Sik Park, Woo-Jin Nam, Seung-Mok Han, Kie-Yong Park, Jong-Bae Lee
  • Publication number: 20150072483
    Abstract: Disclosed is a thin film transistor substrate which facilitates to improve output and transfer characteristics of thin film transistor, wherein the thin film transistor substrate comprises a thin film transistor comprising a lower gate electrode on a substrate, an active layer on the lower gate electrode, source and drain electrodes on the active layer, and an upper gate electrode on the source electrode, drain electrode and active layer, the upper gate electrode for covering a channel region defined by the source and drain electrodes; and a contact portion for electrically connecting the lower gate electrode with the upper gate electrode.
    Type: Application
    Filed: November 18, 2014
    Publication date: March 12, 2015
    Inventors: Jong Sik Shim, Woo Jin Nam, Hong Jae Shin, Min Kyu Chang
  • Patent number: 8916915
    Abstract: Disclosed is a thin film transistor substrate which facilitates to improve output and transfer characteristics of thin film transistor, wherein the thin film transistor substrate comprises a thin film transistor comprising a lower gate electrode on a substrate, an active layer on the lower gate electrode, source and drain electrodes on the active layer, and an upper gate electrode on the source electrode, drain electrode and active layer, the upper gate electrode for covering a channel region defined by the source and drain electrodes; and a contact portion for electrically connecting the lower gate electrode with the upper gate electrode.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: December 23, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Jong Sik Shim, Woo Jin Nam, Hong Jae Shin, Min Kyu Chang
  • Patent number: 8766292
    Abstract: Provided are a method of manufacturing an organic light emitting display device and an organic light emitting display device manufactured by the method. The method includes calculating a peak-luminance current density for each of a red sub-pixel, a blue sub-pixel, a green sub-pixel, and a white sub-pixel, calculating an average use current density for each of the red sub-pixel, blue sub-pixel, green sub-pixel, and white sub-pixel; determining a size of each sub-pixel with the peak-luminance current density and the average use current density, and forming the sub-pixels with the determined sizes of the respective sub-pixels. The present invention sets the size of each sub-pixel in consideration of a peak-luminance current density and an average use current density, thus easily achieving the peak luminance and enhancing the color-coordinate life.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: July 1, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Hwa Kyung Kim, Byung Chul Ahn, Chang Wook Han, Woo Jin Nam, Hong Seok Choi, Yoon Heung Tak, Shinji Takasugi
  • Publication number: 20140042395
    Abstract: Disclosed is a thin film transistor substrate which facilitates to improve output and transfer characteristics of thin film transistor, wherein the thin film transistor substrate comprises a thin film transistor comprising a lower gate electrode on a substrate, an active layer on the lower gate electrode, source and drain electrodes on the active layer, and an upper gate electrode on the source electrode, drain electrode and active layer, the upper gate electrode for covering a channel region defined by the source and drain electrodes; and a contact portion for electrically connecting the lower gate electrode with the upper gate electrode.
    Type: Application
    Filed: November 26, 2012
    Publication date: February 13, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Jong Sik Shim, Woo Jin Nam, Hong Jae Shin, Min Kyu Chang
  • Publication number: 20130329780
    Abstract: Disclosed herein is an inverse transform method for an ultra-high resolution video codec. In the inverse transform method for an ultra-high resolution video codec using a Forward Discrete Cosine Transform (FDCT) algorithm, one of a plurality of pixel values is input as a first pixel value. One of remaining pixel values other than the first pixel value is input as a second pixel value. A first median value is calculated using a butterfly operation by applying coefficient values, respectively corresponding to the first and second pixel values, to the first and second pixel values. The first pixel value is replaced with the calculated first median value so as to re-perform the inverse transform method.
    Type: Application
    Filed: June 15, 2012
    Publication date: December 12, 2013
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jang-Hyun Park, Seong-Hoon CHOI, Chang-Beom KIM, In-Su JANG, Seong-Soo LEE, Jong-Sik PARK, Woo-Jin NAM, Seung-Mok HAN
  • Patent number: 8531361
    Abstract: An OLED display includes a data line, a gate line crossing the data line receiving a scan pulse, a high potential (HP) driving voltage (DV) source, a low potential (LP) DV source, a light emitting element (LEE) emitting light from current flowing between the HP DV source and the LP DV source, a drive element (DE) connected between the HP DV source and the LEE controlling a current flowing in the LEE from voltage between a gate electrode (GE) and a source electrode (SE) of the DE, and a driving current stabilization circuit applying a voltage to the GE of the DE turning on the DE and sinking a reference current through the DE, setting a source voltage of the DE at a sensing voltage and modifying voltage between the GE and SE of the DE to scale a current to be applied to the LEE from the reference current.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: September 10, 2013
    Assignee: LG Display Co., Ltd.
    Inventor: Woo Jin Nam
  • Patent number: 8427398
    Abstract: The present invention provides a novel structure of picture elements in current programming-type semiconductor devices, and in particular, the structure of picture elements of an active matrix organic light emitting diode (OLED) display. The device makes a self-compensation for OLED current deviations due to the deterioration in threshold voltage and uneven electric characteristic in thin film transistors. The invention also provides a method for driving a data driver capable of compensating for the uneven electric characteristic of thin film transistors in the driver for driving picture elements in the current programming-type active matrix OLED display device.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: April 23, 2013
    Assignee: Seoul National University Industry Foundation
    Inventors: Min-Koo Han, Jae-Hoon Lee, Woo-Jin Nam
  • Publication number: 20120327065
    Abstract: An OLED display includes a data line, a gate line crossing the data line receiving a scan pulse, a high potential (HP) driving voltage (DV) source, a low potential (LP) DV source, a light emitting element (LEE) emitting light from current flowing between the HP DV source and the LP DV source, a drive element (DE) connected between the HP DV source and the LEE controlling a current flowing in the LEE from voltage between a gate electrode (GE) and a source electrode (SE) of the DE, and a driving current stabilization circuit applying a voltage to the GE of the DE turning on the DE and sinking a reference current through the DE, setting a source voltage of the DE at a sensing voltage and modifying voltage between the GE and SE of the DE to scale a current to be applied to the LEE from the reference current.
    Type: Application
    Filed: August 22, 2012
    Publication date: December 27, 2012
    Inventor: Woo Jin Nam
  • Patent number: RE47544
    Abstract: Provided are a method of manufacturing an organic light emitting display device and an organic light emitting display device manufactured by the method. The method includes calculating a peak-luminance current density for each of a red sub-pixel, a blue sub-pixel, a green sub-pixel, and a white sub-pixel, calculating an average use current density for each of the red sub-pixel, blue sub-pixel, green sub-pixel, and white sub-pixel; determining a size of each sub-pixel with the peak-luminance current density and the average use current density, and forming the sub-pixels with the determined sizes of the respective sub-pixels. The present invention sets the size of each sub-pixel in consideration of a peak-luminance current density and an average use current density, thus easily achieving the peak luminance and enhancing the color-coordinate life.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: July 30, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Hwa Kyung Kim, Byung Chul Ahn, Chang Wook Han, Woo Jin Nam, Hong Seok Choi, Yoon Heung Tak, Shinji Takasugi