Patents by Inventor Jaehyeong Kim
Jaehyeong Kim 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: 20240122040Abstract: According to an aspect of the present disclosure, a display device includes a substrate which includes an active area including a plurality of sub pixels and a non-active area enclosing the active area and comprises a transparent conductive oxide; an inorganic insulating layer on the substrate; a protection pattern covers an end of the substrate and an end of the inorganic insulating layer; and an organic insulating layer on the substrate, the inorganic insulating layer, and the protection pattern and extends to the outside of the substrate in a partial area.Type: ApplicationFiled: October 5, 2023Publication date: April 11, 2024Inventors: JiHun Song, Jaehyeong Kim
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Patent number: 11895791Abstract: A display device according to an exemplary embodiment of the present disclosure includes a display panel having a display area, a back cover disposed on a rear surface of the display panel, a first roller which winds or unwinds the back cover and the display panel, and a second roller which is disposed above the first roller to move in a vertical direction, the back cover and the display panel being overlaid on the second roller. The emission area is flexibly adjusted during the partial view so as to suppress a burn-in issue and improve the lifespan of the display device.Type: GrantFiled: December 3, 2021Date of Patent: February 6, 2024Assignee: LG DISPLAY CO., LTD.Inventors: JaeSung Lee, Jaehyeong Kim, Dojin Kim
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Patent number: 11758777Abstract: A flexible display device according to an exemplary embodiment of the present disclosure may include a substrate divided into a display area and a non-display area; a first buffer layer disposed on the substrate; a second buffer layer disposed under the substrate; a support member disposed under the second buffer layer; a transistor and a light emitting element disposed above the first buffer layer in the display area; a conductive layer disposed in the second buffer layer in the non-display area; and a connection member disposed on the first buffer layer in the non-display area and electrically connected to the conductive layer through a contact hole, so that an effect of minimizing luminance unevenness of a display panel due to the use of a polyimide (PI) substrate by grounding and removing charges accumulated in the PI substrate, can be provided.Type: GrantFiled: October 1, 2020Date of Patent: September 12, 2023Assignee: LG DISPLAY CO., LTD.Inventors: Jaehyeong Kim, JaeSung Lee, Dojin Kim
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Publication number: 20230071194Abstract: A display device includes a first substrate including a display area including a plurality of sub-pixels and a non-display area and made of one of a transparent conducting oxide and an oxide semiconductor, the display device also includes a first insulating layer disposed on the first substrate and a plurality of light emitting elements disposed in the plurality of sub-pixels on the first insulating layer, and the first substrate is made of one of a transparent conducting oxide and an oxide semiconductor, thus the first substrate can be implemented as a thin film and flexibility of the display device can be improved.Type: ApplicationFiled: August 10, 2022Publication date: March 9, 2023Applicant: LG DISPLAY CO., LTD.Inventors: Jaehyeong KIM, JungIl LEE, JaeSung LEE, Dojin KIM, Youngwan KIM
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Patent number: 11424428Abstract: Display devices and methods of manufacturing display devices are provided in which a sealing layer is provided on a metal layer, and the metal layer may be removed thereby facilitating removal of the sealing layer, for example, during a repair process. A display device includes a first substrate and a display assembly on the first substrate. The display assembly includes a plurality of sub-pixels, and a portion of the first substrate extends laterally beyond a periphery of the display assembly. A protective layer is provided on the portion of the first substrate that extends laterally beyond the periphery of the display assembly, and a sealing layer is disposed on the protective layer.Type: GrantFiled: October 17, 2019Date of Patent: August 23, 2022Assignee: LG Display Co., Ltd.Inventors: Yeonjun Oh, Jaehyeong Kim
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Publication number: 20220210934Abstract: A display device according to an exemplary embodiment of the present disclosure includes a display panel having a display area, a back cover disposed on a rear surface of the display panel, a first roller which winds or unwinds the back cover and the display panel, and a second roller which is disposed above the first roller to move in a vertical direction, the back cover and the display panel being overlaid on the second roller. The emission area is flexibly adjusted during the partial view so as to suppress a burn-in issue and improve the lifespan of the display device.Type: ApplicationFiled: December 3, 2021Publication date: June 30, 2022Applicant: LG Display Co., Ltd.Inventors: JaeSung LEE, Jaehyeong KIM, Dojin KIM
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Publication number: 20210134931Abstract: A flexible display device according to an exemplary embodiment of the present disclosure may include a substrate divided into a display area and a non-display area; a first buffer layer disposed on the substrate; a second buffer layer disposed under the substrate; a support member disposed under the second buffer layer; a transistor and a light emitting element disposed above the first buffer layer in the display area; a conductive layer disposed in the second buffer layer in the non-display area; and a connection member disposed on the first buffer layer in the non-display area and electrically connected to the conductive layer through a contact hole, so that an effect of minimizing luminance unevenness of a display panel due to the use of a polyimide (PI) substrate by grounding and removing charges accumulated in the PI substrate, can be provided.Type: ApplicationFiled: October 1, 2020Publication date: May 6, 2021Applicant: LG Display Co., Ltd.Inventors: Jaehyeong KIM, JaeSung LEE, Dojin KIM
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Publication number: 20200152907Abstract: Display devices and methods of manufacturing display devices are provided in which a sealing layer is provided on a metal layer, and the metal layer may be removed thereby facilitating removal of the sealing layer, for example, during a repair process. A display device includes a first substrate and a display assembly on the first substrate. The display assembly includes a plurality of sub-pixels, and a portion of the first substrate extends laterally beyond a periphery of the display assembly. A protective layer is provided on the portion of the first substrate that extends laterally beyond the periphery of the display assembly, and a sealing layer is disposed on the protective layer.Type: ApplicationFiled: October 17, 2019Publication date: May 14, 2020Inventors: Yeonjun OH, Jaehyeong KIM
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Patent number: 10409126Abstract: A thin film transistor includes a gate electrode, a first insulating layer disposed to cover the gate electrode, a semiconductor layer disposed on the first insulating layer that includes a first side surface portion, a source electrode disposed on the semiconductor layer, and a drain electrode disposed on the first insulating layer that includes a second side surface portion. The first side surface portion makes contact with the second side surface portion.Type: GrantFiled: March 1, 2013Date of Patent: September 10, 2019Assignees: SAMSUNG DISPLAY CO., LTD., KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATIONInventors: Jihun Lim, Byung Du Ahn, Gun Hee Kim, Junhyun Park, Jehun Lee, Jaewoo Park, Dae Hwan Kim, Hyunkwang Jung, Jaehyeong Kim
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Patent number: 8966936Abstract: An expansion valve and an air conditioner for vehicles having the same, the expansion valve comprising a main body having an inflow channel, first and second discharge channels and first and second orifices to expand refrigerant branched from the inflow channel to the first and second discharge channels; first and second valves to control flow rates of refrigerant passing through the first and second orifices by controlling the degree of opening of the first and second orifices respectively; and a shaft slidably mounted inside the main body for varying positions of the first and second valves simultaneously so that the first and second orifices are opened or closed at the same time by the movement of the shaft.Type: GrantFiled: November 9, 2010Date of Patent: March 3, 2015Assignee: Halla Visteon Climate Control CorporationInventors: Yongnam Ahn, Jaehyeong Kim, Byeonghak Min
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Publication number: 20130271687Abstract: A thin film transistor includes a gate electrode, a first insulating layer disposed to cover the gate electrode, a semiconductor layer disposed on the first insulating layer that includes a first side surface portion, a source electrode disposed on the semiconductor layer, and a drain electrode disposed on the first insulating layer that includes a second side surface portion. The first side surface portion makes contact with the second side surface portion.Type: ApplicationFiled: March 1, 2013Publication date: October 17, 2013Applicants: KOOKMIN UNIVERSITY ACADEMY COOPERATION FOUNDATION, SAMSUNG DISPLAY CO., LTD.Inventors: Jihun Lim, Byung Du Ahn, Gun Hee Kim, Junhyun Park, Jehun Lee, Jaewoo Park, Dae Hwan Kim, Hyunkwang Jung, Jaehyeong Kim
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Publication number: 20120036884Abstract: This document relates to an expansion valve and an air conditioner for vehicles having an expansion valve, which can branch and expand refrigerant supplied from a condenser, discharge the branched and expanded refrigerant to an evaporator, and differently control the degree of opening of first and second orifices through first and second valves varied in their positions by a single shaft, so that flow rates of refrigerant expanded while passing through the first and second orifices differ from each other, thereby differently providing refrigerant flow rates into evaporation parts of the evaporator, enhancing cool efficiency of the air conditioner, and reducing the number of components and manufacturing expenses since just one expansion valve is used.Type: ApplicationFiled: November 9, 2010Publication date: February 16, 2012Inventors: Yongnam AHN, Jaehyeong Kim, Byeonghak Min
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Patent number: 7649963Abstract: The present invention relates to an apparatus for estimating and compensating a carrier frequency offset, and a data receiving method in a receiver of a wireless communication system. The apparatus correlates a received signal with a signal delayed by a predetermined period of the received signal in a correlation window, wherein the correlation window is set based on a Cycle Prefix (CP) and a preamble repetition length from a predetermined position, converts the correlated value into a phase value, compensates a phase of the converted result according to preamble segment numbers, and estimates an initial carrier frequency offset value.Type: GrantFiled: March 29, 2006Date of Patent: January 19, 2010Assignee: Posdata Co., Ltd.Inventors: Joonsang Choi, Jungnam Yun, Jaehyeong Kim
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Patent number: 7639754Abstract: A method of detecting a frame boundary of a received signal in a digital communication system, the method including: generating a delayed signal by delaying the received signal by a predetermined period; calculating a correlation value by correlating the received signal with the delayed signal for a predetermined correlation length in a time domain; and determining a timing index corresponding to a maximum value, as a frame boundary index, from a plurality of correlation values which are obtained by repeating the calculation. According to an embodiment of the present invention, a correlation calculation in a time domain is performed without oversampling, in a limited length including a cyclic prefix. Accordingly, accuracy of frame boundary detection may be improved and complexity of hardware and software may also be reduced.Type: GrantFiled: March 29, 2006Date of Patent: December 29, 2009Assignee: Posdata Co., Ltd.Inventors: Joonsang Choi, Jungnam Yun, Jaehyeong Kim
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Patent number: 7616679Abstract: An apparatus for searching for a cell in a mobile communication system, including: a preamble sequence storage unit storing preamble sequences each of which corresponds to one preamble index, and a cell searching unit correlating a received signal and the stored preamble sequences in a time domain and identifying the preamble index corresponding to the received signal. The cell searching apparatus correlates a received signal and stored preamble sequences in a time domain. The apparatus employs binary quantization of preamble sequences to reduce calculation and memory size. Also, the stored preamble sequences are phase pre-rotated according to a segment number, to prevent from a burden of frequency offset correction caused by three different hypotheses. Accordingly, a complexity of the cell searching apparatus is reduced and cell searching performance becomes more accurate.Type: GrantFiled: March 29, 2006Date of Patent: November 10, 2009Assignee: Posdata Co., Ltd.Inventors: Joonsang Choi, Jungnam Yun, Jaehyeong Kim
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Patent number: 7331009Abstract: A method is provided to accurately predict the probability of successfully recovering frames of (coded) information received over a wireless link, without having to decode the frame. This method includes receiving a first encoded signal and predicting link errors based on characteristics of the first encoded signal and variations in these characteristics before decoding the first encoded signal.Type: GrantFiled: February 13, 2004Date of Patent: February 12, 2008Assignee: Lucent Technologies Inc.Inventors: Alexei Ashikhmin, Adriaan J. De Lind Van Wijngaarden, Nandu Gopalakrishnan, Jaehyeong Kim, Emina Soljanin
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Publication number: 20070230592Abstract: A method of detecting a frame boundary of a received signal in a digital communication system, the method including: generating a delayed signal by delaying the received signal by a predetermined period; calculating a correlation value by correlating the received signal with the delayed signal for a predetermined correlation length in a time domain; and determining a timing index corresponding to a maximum value, as a frame boundary index, from a plurality of correlation values which are obtained by repeating the calculation. According to an embodiment of the present invention, a correlation calculation in a time domain is performed without oversampling, in a limited length including a cyclic prefix. Accordingly, accuracy of frame boundary detection may be improved and complexity of hardware and software may also be reduced.Type: ApplicationFiled: March 29, 2006Publication date: October 4, 2007Inventors: Joonsang Choi, Jungnam Yun, Jaehyeong Kim
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Publication number: 20070230590Abstract: An apparatus for searching for a cell in a mobile communication system, including: a preamble sequence storage unit storing preamble sequences each of which corresponds to one preamble index, and a cell searching unit correlating a received signal and the stored preamble sequences in a time domain and identifying the preamble index corresponding to the received signal. The cell searching apparatus correlates a received signal and stored preamble sequences in a time domain. The apparatus employs binary quantization of preamble sequences to reduce calculation and memory size. Also, the stored preamble sequences are phase pre-rotated according to a segment number, to prevent from a burden of frequency offset correction caused by three different hypotheses. Accordingly, a complexity of the cell searching apparatus is reduced and cell searching performance becomes more accurate.Type: ApplicationFiled: March 29, 2006Publication date: October 4, 2007Inventors: Joonsang Choi, Jungnam Yun, Jaehyeong Kim
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Publication number: 20070230591Abstract: The present invention relates to an apparatus for estimating and compensating a carrier frequency offset, and a data receiving method in a receiver of a wireless communication system. The apparatus correlates a received signal with a signal delayed by a predetermined period of the received signal in a correlation window, wherein the correlation window is set based on a Cycle Prefix (CP) and a preamble repetition length from a predetermined position, converts the correlated value into a phase value, compensates a phase of the converted result according to preamble segment numbers, and estimates an initial carrier frequency offset value.Type: ApplicationFiled: March 29, 2006Publication date: October 4, 2007Inventors: Joonsang Choi, Jungnam Yun, Jaehyeong Kim
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Patent number: 7030693Abstract: A method may include determining a power level of a signal and a temperature level of a transmitter originating the signal. At least one of the power and temperature levels may be compared to a lookup table containing predistortion coefficients. The method is capable of predistorting a signal based on the comparison. An apparatus is disclosed in relation to the method.Type: GrantFiled: April 30, 2003Date of Patent: April 18, 2006Assignee: Lucent Technologies Inc.Inventors: Walter Honcharenko, Jaehyeong Kim, Kyriaki Konstantinou