Patents by Inventor Yeon Hwan Kim
Yeon Hwan 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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Patent number: 11985847Abstract: A circularly polarizing plate capable of improving the tone of reflective color sense by using a retardation film having flat dispersion characteristics; and an OLED device comprising the circularly polarizing plate.Type: GrantFiled: November 4, 2019Date of Patent: May 14, 2024Assignee: LG CHEM, LTD.Inventors: Yeon Keun Lee, Hyun Hee Son, Mun Kyu Joo, Deok Hwan Kim, Dong Choon Kim
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Publication number: 20240145346Abstract: A semiconductor device includes a substrate with a conductive pattern. A semiconductor die is electrically connected to the substrate and both the semiconductor die and the substrate are at least partially covered by a package body. In some examples, through-mold vias are formed in the package body to provide electrical signal paths from an exterior surface thereof to the conductive pattern of the substrate. In some examples, through-mold vias are included in the package body to provide electrical signal paths between the semiconductor die and an exterior surface of the package body. In some examples, an interposer is electrically connected to the through-mold vias and may be covered by the package body and/or disposed in spaced relation thereto. In some examples, the interposer may not be electrically connected to the through-mold vias but may have one or more semiconductor dies of the semiconductor device electrically connected thereto.Type: ApplicationFiled: January 8, 2024Publication date: May 2, 2024Applicant: Amkor Technology Singapore Holding Pte. LtdInventors: Dong Joo PARK, Jin Seong KIM, Ki Wook LEE, Dae Byoung KANG, Ho CHOI, Kwang Ho KIM, Jae Dong KIM, Yeon Soo JUNG, Sung Hwan CHO
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Publication number: 20240128915Abstract: Disclosed is a motor driving apparatus including: a motor; an inverter including a switching element for driving the motor; a controller for controlling the switching element; a resolver including an excitation winding and a detection winding; and a resolver chip applying an excitation signal to the excitation winding by inputting a periodic signal from the controller, and receiving a feedback signal from the detection winding, wherein the resolver chip determines the number of rotations of the motor based on a change in a pulse width of a detection signal resulting from a comparison between a voltage of the feedback signal and a preset voltage, and output a signal to the inverter for setting an inertial driving control mode according to the number of rotations of the motor in a failure state of the controller.Type: ApplicationFiled: October 17, 2023Publication date: April 18, 2024Applicant: HYUNDAI MOBIS CO., LTD.Inventors: Tae Hwan KANG, Hyung Min PARK, Joo Won PARK, Beom Cheol CHO, Yun Ho CHOI, Yeon Ho KIM, Won Hee JO
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Publication number: 20240123814Abstract: A control valve includes a valve housing, a first inlet port and a second inlet port that are formed on the valve housing and through which a coolant is drawn, a first outlet port and a second outlet port that are formed on the valve housing and through which the coolant is discharged, and a ball valve rotatably disposed within the valve housing, and configured to fluidically communicate the first inlet port and the first outlet port and fluidically communicate the second inlet port and the second outlet port, or fluidically communicate the first inlet port and the second outlet port and fluidically communicate the second inlet port and the first outlet port.Type: ApplicationFiled: July 19, 2023Publication date: April 18, 2024Inventors: Yeon Man Jeong, Kyung-Hwan Kim
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Publication number: 20240099114Abstract: A display device may include a first electrode, a second electrode, an emission layer, an intervening layer, and a first encapsulation layer. The second electrode may overlap the first electrode. The emission layer may be disposed between the first electrode and the second electrode, may overlap the first electrode, and may include a light emitting material. The intervening layer may directly contact the second electrode, may be spaced from each of the first electrode and the emission layer, and may include a fluorine compound. A first section of the first encapsulation layer may overlap the emission layer. The intervening layer may be positioned between the second electrode and a second section of the first encapsulation layer.Type: ApplicationFiled: November 24, 2023Publication date: March 21, 2024Inventors: Jae Sik KIM, Jae Ik KIM, Jung Sun PARK, Seung Yong SONG, Duck Jung LEE, Yeon Hwa LEE, Joon Gu LEE, Kyu Hwan HWANG
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Publication number: 20240069524Abstract: Disclosed is an apparatus for excitation signal generation for a resolver. The apparatus includes a sine wave generator that generates a sine wave based on a square wave, an amplifier that amplifies the sine wave, a differential signal generator that converts, into a differential signal, the amplified sine wave, a driver that inputs the differential signal to a coil, and a processor that generates an excitation signal by increasing a voltage of the sine wave from a start voltage to a target voltage through at least one of the sine wave generator and the amplifier based on a transient current that flows into the coil in a transient response interval.Type: ApplicationFiled: December 27, 2022Publication date: February 29, 2024Applicant: HYUNDAI MOBIS CO., LTD.Inventors: Yun Ho CHOI, Hyung Min PARK, Joo Won PARK, Yeon Ho KIM, Won Hee JO, Tae Hwan KANG, Beom Cheol CHO
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Patent number: 11877464Abstract: Provided is an organic light emitting device that includes an anode, a cathode provided to face the anode, and one or more light emitting units provided between the anode and the cathode, wherein the organic light emitting device includes a charge generation layer provided between the anode and the one light emitting unit, or between the two light emitting units adjacent to each other among the light emitting units, the charge generation layer comprises a p-type charge injection layer, a p-type charge generation layer, or a layer which simultaneously injects and generates p-type charges, and the p-type charge injection layer, the p-type charge generation layer, or the layer which simultaneously injects and generates p-type charges has electric conductivity of 1×10?6 S/cm or more.Type: GrantFiled: May 11, 2018Date of Patent: January 16, 2024Assignee: LG Chem, Ltd.Inventors: Dongheon Kim, Nansra Heo, Wanpyo Hong, Yeon Hwan Kim, Heungwoo Choi, Jun Yun, Hyungjin Lee, Jae Seung Ha
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Patent number: 11856809Abstract: A method of screening for an electron transport material included in an electron transport layer of an organic light emitting device and a method of screening for a hole blocking material included in a hole blocking layer of the organic light emitting device, the method using a heterogeneous electron transfer rate constant (K) value to select the electron transport material and an electron donating rate constant kd to select the hole blocking material, thereby capable of realizing the organic light emitting device having an excellent balance between luminous efficiency and lifetime.Type: GrantFiled: January 31, 2020Date of Patent: December 26, 2023Assignee: LG CHEM, LTD.Inventors: Ji Hye Kim, Sung Kil Hong, Minseung Chun, Yeon Hwan Kim, Jae Tak Lee
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Patent number: 11778909Abstract: Provided is a compound of Chemical Formula 1: wherein: L is a single bond, a substituted or unsubstituted C6-60 arylene, or a substituted or unsubstituted C2-60 heteroarylene containing at least one selected from the group consisting of N, O and S, and Ar is a substituted or unsubstituted C2-60 heteroaryl containing at least one selected from the group consisting of N, O and S, and to an organic light emitting device comprising the same.Type: GrantFiled: May 2, 2019Date of Patent: October 3, 2023Assignee: LG Chem, Ltd.Inventors: Sunmin Kim, Yongbum Cha, Sang Young Jeon, Yeon Hwan Kim
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Patent number: 11685859Abstract: Provided is a compound of Chemical Formula 1: wherein: L11 is a single bond or a substituted or unsubstituted C6-60 arylene; L12 and L13 are each independently a single bond or a substituted or unsubstituted C6-60 arylene; R11 is a substituted or unsubstituted C6-60 aryl; R12 and R13 are each independently any one substituent selected from the group consisting of the following: wherein, each R? is independently a substituted or unsubstituted C6-60 aryl, and R14 and R15 are hydrogen, or are linked to each other, and an organic light emitting device including the same.Type: GrantFiled: October 5, 2018Date of Patent: June 27, 2023Assignee: LG CHEM, LTD.Inventors: Jae Seung Ha, Yeon Hwan Kim, Sang Young Jeon, Sung Kil Hong, Yong Bum Cha, Seong Mi Cho
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Patent number: 11515478Abstract: The present disclosure relates to a compound represented by Chemical Formula 1 and an organic light emitting device using the same. The compound is used as a material of an organic material layer of the organic light emitting device.Type: GrantFiled: February 23, 2018Date of Patent: November 29, 2022Assignee: LG CHEM LTD.Inventors: Yong Bum Cha, Sang Duk Suh, Yeon Hwan Kim, Sang Young Jeon, Sung Jae Lee
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Patent number: 11495745Abstract: Provided is a compound of Chemical Formula 1: where R1 and R2 are each independently hydrogen, a substituted or unsubstituted C1-60 alkyl, a substituted or unsubstituted C1-60 alkoxy, a substituted or unsubstituted C1-60 haloalkyl, a substituted or unsubstituted C1-60 haloalkoxy, halogen, cyano, tri(C1-60 alkyl)silyl, a substituted or unsubstituted C6-60 aryl, or a substituted or unsubstituted C2-60 heteroaryl containing at least one of O, N, Si and S, R3 and R4 are each independently hydrogen, deuterium, a substituted or unsubstituted C1-60 alkyl, a substituted or unsubstituted C1-60 alkoxy, a substituted or unsubstituted C1-60 haloalkyl, a substituted or unsubstituted C1-60 haloalkoxy, halogen, cyano, tri(C1-60 alkyl)silyl, or a substituted or unsubstituted C2-60 heteroaryl containing at least one of O, N, Si and S, and Ar is C6-60 aryl, or C2-60 heteroaryl containing at least one of O, N, Si and S, wherein the C6-60 aryl, or C2-60 heteroaryl is substituted with 1 to 5 substituents each selected from thType: GrantFiled: October 17, 2018Date of Patent: November 8, 2022Assignee: LG CHEM, LTD.Inventors: Jun Yun, Joo Yong Yoon, Yeon Hwan Kim, Wanpyo Hong
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Patent number: 11459290Abstract: The present disclosure relates to a novel compound represented by Chemical Formula 1 and an organic light emitting device using the same. The compound is used as a material of an organic material layer of the organic light emitting device.Type: GrantFiled: April 11, 2018Date of Patent: October 4, 2022Assignee: LG CHEM, LTD.Inventors: Yong Bum Cha, Sung Jae Lee, Yeon Hwan Kim, Sang Young Jeon, Su Jin Han
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Patent number: 11407718Abstract: The present disclosure relates to a cyclic compound represented by Chemical Formula 1 and an organic light emitting device including the same. The cyclic compound used as a material of an organic material layer of the organic light emitting device, provides improved efficiency, low driving voltage, and improved lifetime characteristics.Type: GrantFiled: April 26, 2018Date of Patent: August 9, 2022Assignee: LG Chem, Ltd.Inventors: Yong Bum Cha, Yeon Ho Cho, Yeon Hwan Kim, Sang Young Jeon, Sung Jae Lee
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Publication number: 20220170883Abstract: Provided is a method for selecting a material for an organic light-emitting device, the method including comparing the reversibilities (electrical stability in the (+) radical and (?) radical states of a material) of the material using cyclic voltammetry (CV).Type: ApplicationFiled: May 15, 2020Publication date: June 2, 2022Inventors: Jihye KIM, Sung Kil HONG, Yeon Hwan KIM, Daegyeon KWON, Heesung AHN
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Publication number: 20220093873Abstract: Provided is an organic light emitting device having an excellent balance between luminous efficiency and lifespan, the organic light emitting device including: an anode; a cathode positioned opposite to the anode; a light emitting layer positioned between the anode and the cathode; a hole transport layer positioned between the anode and the light emitting layer; and an electron transport layer positioned between the light emitting layer and the cathode, wherein the electron transport layer includes a metal complex compound and an electron transport material having a heterogeneous electron transfer rate constant (K) of 1.2 to 1.65, and the heterogeneous electron transfer rate constant (K) is calculated by the following Mathematical Equation 1: K = k d + k a 2 ? Mathematical ? ? Equation ? ? 1 ? wherein in Mathematical Equation 1: kd (donating k) is an electron donating rate constant and ka (accepting k) is an electron accepting rate constant.Type: ApplicationFiled: January 31, 2020Publication date: March 24, 2022Inventors: Ji Hye KIM, Sung Kil HONG, Minseung CHUN, Dong Uk HEO, Yeon Hwan KIM, Sang Duk SUH
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Patent number: 11261176Abstract: The present invention relates to a novel amine-based compound represented by Chemical Formula 1 and an organic light emitting device including the same. The compound provides improved efficiency, low driving voltage, and improved lifetime characteristic of the organic light emitting device.Type: GrantFiled: December 21, 2017Date of Patent: March 1, 2022Assignee: LG CHEM, LTD.Inventors: Yong Bum Cha, Sang Young Jeon, Yeon Ho Cho, Yeon Hwan Kim
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Patent number: 11251377Abstract: Provided is an organic light emitting device.Type: GrantFiled: May 11, 2018Date of Patent: February 15, 2022Assignee: LG Chem, Ltd.Inventors: Yong Bum Cha, Sung Jae Lee, Yeon Hwan Kim, Sang Young Jeon, Seong Mi Cho
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Patent number: 11216115Abstract: According to an embodiment, a method for operating an electronic device may comprise operating touch circuitry configured to detect a touch or hovering according to a first driving signal in a first operation mode, detecting a first event related to mode switching, and operating the touch circuitry according to a second driving signal different from the first driving signal in a second operation mode based on detecting the first event. Other embodiments are also possible.Type: GrantFiled: August 17, 2018Date of Patent: January 4, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Sang-Yup Lee, Tae-Kyoung Kang, Yeon-Hwan Kim, Jun-Ho Ko, Young-Jun An, Won-Woo Yoo, Ji-Young Lim, Jang-Hoon Hong, Hyun-Suk Choi
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Publication number: 20210320255Abstract: A method of screening for an electron transport material included in an electron transport layer of an organic light emitting device and a method of screening for a hole blocking material included in a hole blocking layer of the organic light emitting device, the method using a heterogeneous electron transfer rate constant (K) value to select the electron transport material and an electron donating rate constant kd to select the hole blocking material, thereby capable of realizing the organic light emitting device having an excellent balance between luminous efficiency and lifetime.Type: ApplicationFiled: January 31, 2020Publication date: October 14, 2021Inventors: Ji Hye Kim, Sung Kil Hong, Minseung Chun, Yeon Hwan Kim, Jae Tak Lee