Patents by Inventor Chi-ho Jung
Chi-ho Jung 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: 20240179932Abstract: The present disclosure relates to an organic light emitting diode and an organic light emitting device including the same. The organic light emitting diode includes a first electrode; a second electrode facing the first electrode; and a first blue emitting material layer including a first compound and a second compound and positioned between the first and second electrodes, wherein the first compound is represented by Formula 1, and the second compound is represented by Formula 3. According to an aspect of the present disclosure, it is allowed to provide an OLED and an organic light emitting device having high emitting efficiency and/or improved lifespan.Type: ApplicationFiled: October 31, 2023Publication date: May 30, 2024Applicants: LG DISPLAY CO., LTD., LT Materials Co.,LtdInventors: Ji-Seon JANG, Chi-Ho LEE, Suk-Young BAE, Han-Jin AHN, Jun-Yun KIM, Dae-Hyuk CHOI, Dong-Jun KIM, Yong-Woo KIM, Yong-Geun JUNG, Jin-Hwan SHIN, Seok-Hyeon YU
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Publication number: 20240154205Abstract: Discussed is a battery case having a natural heat dissipation function, and more particularly to a battery case including a case body having a hollow structure, and at least one opening and a ventilation unit mounted in the at least one opening, wherein the ventilation unit includes a frame configured to define an outer part thereof, at least one first heat dissipation portion disposed in the frame so as to be inclined at a predetermined angle, the at least one first heat dissipation portion having a plate shape, and a second heat dissipation portion located along at least one of an upper edge and a lower edge of the at least one first heat dissipation portion, the second heat dissipation portion being provided with a plurality of second through-holes.Type: ApplicationFiled: November 15, 2022Publication date: May 9, 2024Applicant: LG ENERGY SOLUTION, LTD.Inventors: Chi Gohn YOO, Jin Hyun LEE, Dae Ho JUNG
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Patent number: 11975296Abstract: A pore-filled ion exchange polyelectrolyte composite membrane from which the surface ion exchange polyelectrolyte has been removed and a method of manufacturing the same are provided. The ion exchange polyelectrolyte composite membrane exhibits low film resistance and low in-plane-direction swelling degree, and has a smaller film-thickness than a commercial film, and thus, can be used for various purposes. In addition, since the pore-filled ion exchange polyelectrolyte composite membrane is continuously manufactured through a roll-to-roll process, the manufacturing process is simple, and manufacturing costs can be greatly reduced.Type: GrantFiled: April 29, 2019Date of Patent: May 7, 2024Assignee: Toray Advanced Materials Korea Inc.Inventors: Young Woo Choi, Mi Soon Lee, Tae Young Kim, Young Gi Yoon, Beom Jun Kim, Min Ho Seo, Chi Young Jung, Jong Min Lee, Nam-jo Jeong, Seung Cheol Yang, Ji Yeon Choi
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Patent number: 11942632Abstract: A positive electrode active material particle includes a core that contains lithium cobalt oxide represented by the following Chemical Formula LiaCo(1-x)MxO2-yAy and a shell that is coated on the surface of the core and contains composite metal oxide of a metal with an oxidation number of +2 and a metal with an oxidation number of +3. In particular, M is at least one selected from the group consisting of Ti, Mg, Zn, Si, Al, Zr, V, Mn, Nb and Ni. A is oxygen-substitutional halogen and 1.00?a?1.05, 0?x?0.05, and 0?y?0.001.Type: GrantFiled: October 4, 2017Date of Patent: March 26, 2024Assignee: LG Energy Solution, Ltd.Inventors: Hyuck Hur, Chi Ho Jo, Bo Ram Lee, Sung bin Park, Young uk Park, Wang Mo Jung
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Publication number: 20240079584Abstract: The present disclosure discloses a positive electrode active material for a lithium secondary battery comprising a secondary particle having an average particle size (D50) of 1 to 15 ?m, formed by agglomeration of at least two primary macro particles having an average particle size (D50) of 0.1 to 3 ?m; and a coating layer of a lithium-metal oxide on a surface of the secondary particle, wherein the primary macro particles are represented by LiaNi1-x-yCoxM1yM2wO2 (1.0?a?1.5, 0?x?0.2, 0?y?0.2, 0?w?0.1, 0?x+y?0.2, M1 includes at least one metal of Mn or Al, and M2 includes at least one metal selected from the group consisting of Ba, Ca, Zr, Ti, Mg, Ta, Nb and Mo), and wherein the lithium-metal oxide is a low-temperature phase LixCoO2(0<x?1) having at least one of a spinel structure (Fd-3m) or a disordered rock-salt structure (Fm-3m).Type: ApplicationFiled: February 7, 2022Publication date: March 7, 2024Applicant: LG Energy Solution, Ltd.Inventors: Jong-Wook Heo, Ji-Hye Kim, Tae-Gu Yoo, Wang-Mo Jung, Hae-Jung Jung, Chi-Ho Jo
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Patent number: 9635459Abstract: An audio reproduction method and apparatus, in which an audio volume is automatically controlled based on audio energy and human auditory characteristics. The audio reproduction method includes splitting a reproduction audio signal into audio signals corresponding to a plurality of frequency bands, extracting audio energy for each of the frequency bands, and comparing the audio energy for each of the frequency bands with a predetermined threshold and controlling the volume of the audio signal corresponding to each of the frequency bands.Type: GrantFiled: August 22, 2013Date of Patent: April 25, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chi-ho Jung, Ho-young Sung
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Patent number: 8675899Abstract: A front surround sound reproduction system which improves the performance of beam steering by using a speaker array arranged geometrically on two or more planes or on one curved surface, and a signal reproducing method of the system. The audio reproduction apparatus to reproduce a multi-channel audio signal by using a plurality of speakers includes a signal distribution unit to duplicate a multi-channel audio signal and to distribute the duplicated signals as one or more groups of multi-channel signals corresponding to one or more speaker array groups, a steering processing unit to form sound beams with steering angles predetermined in relation to each speaker array group, from the groups of multi-channel signals distributed by the signal distribution unit, and a speaker array unit having one or more speaker array groups to reproduce the sound beams of each group formed by the steering processing unit, in the speaker array group.Type: GrantFiled: August 15, 2007Date of Patent: March 18, 2014Assignee: SAMSUNG Electronics Co., Ltd.Inventor: Chi-ho Jung
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Publication number: 20130336502Abstract: An audio reproduction method and apparatus, in which an audio volume is automatically controlled based on audio energy and human auditory characteristics. The audio reproduction method includes splitting a reproduction audio signal into audio signals corresponding to a plurality of frequency bands, extracting audio energy for each of the frequency bands, and comparing the audio energy for each of the frequency bands with a predetermined threshold and controlling the volume of the audio signal corresponding to each of the frequency bands.Type: ApplicationFiled: August 22, 2013Publication date: December 19, 2013Applicant: Samsung Electronics Co., LtdInventors: Chi-ho JUNG, Ho-young SUNG
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Patent number: 8477951Abstract: A front surround reproduction system improving the stereo effect of mid and low frequency signals by using a psychoacoustic model, and a method thereof.Type: GrantFiled: March 30, 2007Date of Patent: July 2, 2013Assignee: SAMSUNG Electronics Co., Ltd.Inventors: Chi-ho Jung, Sun-min Kim
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Patent number: 8345892Abstract: A front surround sound reproduction system using a speaker array, a front surround sound reproduction system to perform stereo localization using a beam forming speaker array, and a surround sound reproduction method thereof. A front surround sound reproduction apparatus using a plurality of speakers includes a first signal processing unit to adjust a frequency characteristic of each first and second channel signal and to output the adjusted signals to left and right speakers assigned according to a frequency band, a second signal processing unit to generate a plurality of channel signals by copying the first and second channel signals, to adjust a signal characteristic of each of the plurality of channel signals, and to output the adjusted signals to a speaker array in the center, and a speaker unit having a plurality of speakers to reproduce the signals output from the first signal processing unit and the second signal processing unit.Type: GrantFiled: March 29, 2007Date of Patent: January 1, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Chi-ho Jung, Seong-cheol Jang
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Publication number: 20080187149Abstract: An audio reproduction method and apparatus, in which an audio volume is automatically controlled based on audio energy and human auditory characteristics. The audio reproduction method includes splitting a reproduction audio signal into audio signals corresponding to a plurality of frequency bands, extracting audio energy for each of the frequency bands, and comparing the audio energy for each of the frequency bands with a predetermined threshold and controlling the volume of the audio signal corresponding to each of the frequency bands.Type: ApplicationFiled: August 28, 2007Publication date: August 7, 2008Applicant: Samsung Electronics Co., Ltd.Inventor: Chi-ho Jung
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Publication number: 20080181416Abstract: A front surround sound reproduction system which improves the performance of beam steering by using a speaker array arranged geometrically on two or more planes or on one curved surface, and a signal reproducing method of the system. The audio reproduction apparatus to reproduce a multi-channel audio signal by using a plurality of speakers includes a signal distribution unit to duplicate a multi-channel audio signal and to distribute the duplicated signals as one or more groups of multi-channel signals corresponding to one or more speaker array groups, a steering processing unit to form sound beams with steering angles predetermined in relation to each speaker array group, from the groups of multi-channel signals distributed by the signal distribution unit, and a speaker array unit having one or more speaker array groups to reproduce the sound beams of each group formed by the steering processing unit, in the speaker array group.Type: ApplicationFiled: August 15, 2007Publication date: July 31, 2008Applicant: Samsung Electronics Co., Ltd.Inventor: Chi-ho JUNG
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Publication number: 20080101631Abstract: A front surround sound reproduction system using a speaker array, a front surround sound reproduction system to perform stereo localization using a beam forming speaker array, and a surround sound reproduction method thereof. A front surround sound reproduction apparatus using a plurality of speakers includes a first signal processing unit to adjust a frequency characteristic of each first and second channel signal and to output the adjusted signals to left and right speakers assigned according to a frequency band, a second signal processing unit to generate a plurality of channel signals by copying the first and second channel signals, to adjust a signal characteristic of each of the plurality of channel signals, and to output the adjusted signals to a speaker array in the center, and a speaker unit having a plurality of speakers to reproduce the signals output from the first signal processing unit and the second signal processing unit.Type: ApplicationFiled: March 29, 2007Publication date: May 1, 2008Applicant: Samsung Electronics Co., Ltd.Inventors: Chi-ho Jung, Seong-cheol Jang
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Publication number: 20070286427Abstract: A front surround reproduction system improving the stereo effect of mid and low frequency signals by using a psychoacoustic model, and a method thereof.Type: ApplicationFiled: March 30, 2007Publication date: December 13, 2007Applicant: Samsung Electronics Co., Ltd.Inventors: Chi-ho JUNG, Sun-min Kim