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).
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Publication number: 20240140873Abstract: 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: ApplicationFiled: September 18, 2023Publication date: May 2, 2024Applicant: SK enpulse Co., Ltd.Inventors: Kyung yeol MIN, Yongsoo CHOI, SungSic HWANG, Na Hyun NAM, Kyung In KIM, Jung Kun KANG, Woo Jin LEE
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Patent number: 11330698Abstract: 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: GrantFiled: August 28, 2018Date of Patent: May 10, 2022Assignee: Postech Academy-Industry FoundationInventors: Ji Mo Lee, Gun Su Yun, Jae Koo Lee, Seung Taek Lee, Woo Jin Nam, Won Seok Kim
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Publication number: 20200389967Abstract: 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: ApplicationFiled: August 28, 2018Publication date: December 10, 2020Inventors: Ji Mo LEE, Gun Su YUN, Jae Koo LEE, Seung Taek LEE, Woo Jin NAM, Won Seok KIM
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Patent number: 10089934Abstract: 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: GrantFiled: November 6, 2008Date of Patent: October 2, 2018Assignee: LG DISPLAY CO., LTD.Inventors: Woo-Jin Nam, In-Su Joo
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Patent number: 9837014Abstract: 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: GrantFiled: December 24, 2014Date of Patent: December 5, 2017Assignee: LG Display Co., Ltd.Inventors: Dae-Hyun Kim, Woo-Jin Nam
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Patent number: 9666120Abstract: 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: GrantFiled: December 3, 2014Date of Patent: May 30, 2017Assignee: LG DISPLAY CO., LTD.Inventors: Seon Mi Lee, Woo Jin Nam
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Patent number: 9178048Abstract: 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: GrantFiled: November 18, 2014Date of Patent: November 3, 2015Assignee: LG Display Co., Ltd.Inventors: Jong Sik Shim, Woo Jin Nam, Hong Jae Shin, Min Kyu Chang
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Patent number: 9105236Abstract: 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: GrantFiled: September 26, 2012Date of Patent: August 11, 2015Assignee: LG Display Co., Ltd.Inventors: Jong-Sik Shim, Woo-Jin Nam, Min-Kyu Chang
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Publication number: 20150187260Abstract: 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: ApplicationFiled: December 3, 2014Publication date: July 2, 2015Applicant: LG Display Co., Ltd.Inventors: Seon Mi LEE, Woo Jin NAM
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Publication number: 20150187261Abstract: 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: ApplicationFiled: December 24, 2014Publication date: July 2, 2015Applicant: LG Display Co., Ltd.Inventors: Dae-Hyun KIM, Woo-Jin NAM
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Publication number: 20150124879Abstract: 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: ApplicationFiled: December 29, 2014Publication date: May 7, 2015Inventors: Seung-Soo Lee, Jong-Sik Park, Woo-Jin Nam, Seung-Mok Han, Kie-Yong Park, Jong-Bae Lee
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Publication number: 20150072483Abstract: 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: ApplicationFiled: November 18, 2014Publication date: March 12, 2015Inventors: Jong Sik Shim, Woo Jin Nam, Hong Jae Shin, Min Kyu Chang
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Patent number: 8916915Abstract: 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: GrantFiled: November 26, 2012Date of Patent: December 23, 2014Assignee: LG Display Co., Ltd.Inventors: Jong Sik Shim, Woo Jin Nam, Hong Jae Shin, Min Kyu Chang
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Patent number: 8766292Abstract: 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: GrantFiled: December 6, 2012Date of Patent: July 1, 2014Assignee: 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
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Publication number: 20140042395Abstract: 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: ApplicationFiled: November 26, 2012Publication date: February 13, 2014Applicant: LG DISPLAY CO., LTD.Inventors: Jong Sik Shim, Woo Jin Nam, Hong Jae Shin, Min Kyu Chang
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Publication number: 20130329780Abstract: 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: ApplicationFiled: June 15, 2012Publication date: December 12, 2013Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jang-Hyun Park, Seong-Hoon CHOI, Chang-Beom KIM, In-Su JANG, Seong-Soo LEE, Jong-Sik PARK, Woo-Jin NAM, Seung-Mok HAN
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Patent number: 8531361Abstract: 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: GrantFiled: August 22, 2012Date of Patent: September 10, 2013Assignee: LG Display Co., Ltd.Inventor: Woo Jin Nam
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Patent number: 8427398Abstract: 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: GrantFiled: February 9, 2006Date of Patent: April 23, 2013Assignee: Seoul National University Industry FoundationInventors: Min-Koo Han, Jae-Hoon Lee, Woo-Jin Nam
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Publication number: 20120327065Abstract: 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: ApplicationFiled: August 22, 2012Publication date: December 27, 2012Inventor: Woo Jin Nam
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Patent number: RE47544Abstract: 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: GrantFiled: June 30, 2016Date of Patent: July 30, 2019Assignee: 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