Patents by Inventor Hong-Sik Yoon
Hong-Sik Yoon 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: 11895915Abstract: Disclosed is an organic light emitting diode (OLED) comprising at least one emitting unit that includes a first compound, which may have a bipolar property, a second compound, which may have a delayed fluorescent property, and a third compound, which may have narrow FWHM (full width at half maximum) and a fluorescent property, and an organic light emitting device including the OLED. Further the compounds have defined relative LUMO and HOMO energies. The OLED and the organic light emitting device has enhanced luminous efficiency, color purity and luminous life span as well as low driving voltage.Type: GrantFiled: July 24, 2019Date of Patent: February 6, 2024Assignees: LG DISPLAY CO., LTD, LG CHEM, LTD.Inventors: Hyong-Jong Choi, Tae-Ryang Hong, Joong-Hwan Yang, Jun-Yun Kim, Wan-Pyo Hong, Jin-Joo Kim, Hong-Sik Yoon
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Patent number: 11683982Abstract: An organic compound including a carbazolyl moiety having a p-type property, a dibenzofuranyl or dibenzothiophenyl moiety having an n-type property and further substituted with a dibenzofuranyl or dibenzothiophenyl moiety is disclosed. An organic light emitting diode and an organic light emitting device including the organic compound are also disclosed. The organic compound has excellent thermal resistance and a high energy level due to the combination of fused hetero aromatic rings. Therefore, the organic light emitting diode and the organic light emitting device including the organic compound show excellent luminous efficiency and an improved luminous lifetime.Type: GrantFiled: December 11, 2019Date of Patent: June 20, 2023Assignees: LG DISPLAY CO., LTD., LG CHEM, LTD.Inventors: Jun-Yun Kim, Tae-Ryang Hong, Joong-Hwan Yang, Wan-Pyo Hong, Jin-Joo Kim, Hong-Sik Yoon
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Patent number: 11588113Abstract: Disclosed is an organic light emitting diode (OLED) includes a first emitting material layer, which includes a first compound and a second compound, and a second emitting material layer, which includes a third compound and a fourth compound, wherein a HOMO energy level of the first compound is higher than a HOMO energy level of the second compound and a HOMO energy level of the third compound is lower than a HOMO energy level of the fourth compound, and an organic light emitting device having the OLED. The OLED and the organic light emitting device disclosed have enhanced luminous efficiency, color purity and luminous life span as well as low driving voltage by applying the emitting material layer.Type: GrantFiled: July 22, 2019Date of Patent: February 21, 2023Assignees: LG DISPLAY CO., LTD., LG CHEM, LTD.Inventors: Tae-Ryang Hong, Hyong-Jong Choi, Jun-Yun Kim, Wan-Pyo Hong, Jin-Joo Kim, Hong-Sik Yoon
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Publication number: 20200194685Abstract: An organic compound including a carbazolyl moiety having a p-type property, a dibenzofuranyl or dibenzothiophenyl moiety having an n-type property and further substituted with a dibenzofuranyl or dibenzothiophenyl moiety is disclosed. An organic light emitting diode and an organic light emitting device including the organic compound are also disclosed. The organic compound has excellent thermal resistance and a high energy level due to the combination of fused hetero aromatic rings. Therefore, the organic light emitting diode and the organic light emitting device including the organic compound show excellent luminous efficiency and an improved luminous lifetime.Type: ApplicationFiled: December 11, 2019Publication date: June 18, 2020Applicants: LG Display Co., Ltd., LG CHEM, LTD.Inventors: Jun-Yun Kim, Tae-Ryang Hong, Joong-Hwan Yang, Wan-Pyo Hong, Jin-Joo Kim, Hong-Sik Yoon
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Publication number: 20200136059Abstract: Disclosed is an organic light emitting diode (OLED) includes a first emitting material layer, which includes a first compound and a second compound, and a second emitting material layer, which includes a third compound and a fourth compound, wherein a HOMO energy level of the first compound is higher than a HOMO energy level of the second compound and a HOMO energy level of the third compound is lower than a HOMO energy level of the fourth compound, and an organic light emitting device having the OLED. The OLED and the organic light emitting device disclosed have enhanced luminous efficiency, color purity and luminous life span as well as low driving voltage by applying the emitting material layer.Type: ApplicationFiled: July 22, 2019Publication date: April 30, 2020Applicants: LG Display Co., Ltd., LG CHEM, LTD.Inventors: Tae-Ryang Hong, Hyong-Jong Choi, Jun-Yun Kim, Wan-Pyo Hong, Jin-Joo Kim, Hong-Sik Yoon
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Publication number: 20200127214Abstract: Disclosed is an organic light emitting diode (OLED) comprising at least one emitting unit that includes a first compound, which may have a bipolar property, a second compound, which may have a delayed fluorescent property, and a third compound, which may have narrow FWHM (full width at half maximum) and a fluorescent property, and an organic light emitting device including the OLED. Further the compounds have defined relative LUMO and HOMO energies. The OLED and the organic light emitting device has enhanced luminous efficiency, color purity and luminous life span as well as low driving voltage.Type: ApplicationFiled: July 24, 2019Publication date: April 23, 2020Applicants: LG Display Co., Ltd., LG CHEM, LTD.Inventors: Hyong-Jong Choi, Tae-Ryang Hong, Joong-Hwan Yang, Jun-Yun Kim, Wan-Pyo Hong, Jin-Joo Kim, Hong-Sik Yoon
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Patent number: 10141427Abstract: A semiconductor device includes a gate pattern on a substrate, a multi-channel active pattern under the gate pattern to cross the gate pattern and having a first region not overlapping the gate pattern and a second region overlapping the gate pattern, a diffusion layer in the multi-channel active pattern along the outer periphery of the first region and including an impurity having a concentration, and a liner on the multi-channel active pattern, the liner extending on lateral surfaces of the first region and not extending on a top surface of the first region. Related fabrication methods are also described.Type: GrantFiled: June 20, 2016Date of Patent: November 27, 2018Assignee: Samsung Electronics Co., Ltd.Inventors: Kyung-In Choi, Gyeom Kim, Hong-Sik Yoon, Bon-Young Koo, Wook-Je Kim
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Publication number: 20160300932Abstract: A semiconductor device includes a gate pattern on a substrate, a multi-channel active pattern under the gate pattern to cross the gate pattern and having a first region not overlapping the gate pattern and a second region overlapping the gate pattern, a diffusion layer in the multi-channel active pattern along the outer periphery of the first region and including an impurity having a concentration, and a liner on the multi-channel active pattern, the liner extending on lateral surfaces of the first region and not extending on a top surface of the first region. Related fabrication methods are also described.Type: ApplicationFiled: June 20, 2016Publication date: October 13, 2016Inventors: Kyung-In Choi, Gyeom KIM, Hong-Sik YOON, Bon-Young KOO, Wook-Je KIM
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Patent number: 9401428Abstract: A semiconductor device includes a gate pattern on a substrate, a multi-channel active pattern under the gate pattern to cross the gate pattern and having a first region not overlapping the gate pattern and a second region overlapping the gate pattern, a diffusion layer in the multi-channel active pattern along the outer periphery of the first region and including an impurity having a concentration, and a liner on the multi-channel active pattern, the liner extending on lateral surfaces of the first region and not extending on a top surface of the first region. Related fabrication methods are also described.Type: GrantFiled: March 12, 2013Date of Patent: July 26, 2016Assignee: Samsung Electronics Co., Ltd.Inventors: Kyung-In Choi, Gyeom Kim, Hong-Sik Yoon, Bon-Young Koo, Wook-Je Kim
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Publication number: 20140375652Abstract: An apparatus for measuring static electricity on a substrate includes a measuring unit, an information processing unit, and a display unit. The measuring unit measures first static electricity information from the substrate. The information processing unit calculates a static electricity distribution state of the substrate using the first static electricity information. The display unit displays a graphic image representing the static electricity distribution state. The information processing unit includes a calculating unit and a controller. The calculating unit estimates second static electricity information using the first static electricity information. The controller calculates the static electricity distribution state of the substrate using the first static electricity information and the second static electricity information.Type: ApplicationFiled: January 7, 2014Publication date: December 25, 2014Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: In Su Jeon, Min Woo Kim, Kyung Pil Yang, Hyun Sik Choi, Hong Sik Yoon
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Publication number: 20140217483Abstract: A semiconductor device includes a gate pattern on a substrate, a multi-channel active pattern under the gate pattern to cross the gate pattern and having a first region not overlapping the gate pattern and a second region overlapping the gate pattern, a diffusion layer in the multi-channel active pattern along the outer periphery of the first region and including an impurity having a concentration, and a liner on the multi-channel active pattern, the liner extending on lateral surfaces of the first region and not extending on a top surface of the first region. Related fabrication methods are also described.Type: ApplicationFiled: March 12, 2013Publication date: August 7, 2014Inventors: Kyung-In CHOI, Gyeom KIM, Hong-Sik YOON, Bon-Young KOO, Wook-Je KIM
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Patent number: 8604551Abstract: A semiconductor device includes a substrate, a first region and a second region. Each of the first region and second region includes a trench, an epitaxial layer including a source/drain having a first part and a second part, the first part extending from a top surface of the substrate to a top surface of the source/drain and the second part extending from the top surface of the substrate to a bottom surface of the source/drain in the trench. The cross-sectional shape of the first part of the source/drain of the first region is the same as the cross-sectional shape of the first part of the source/drain of the second region. The cross-sectional shape of the second past of the source/drain of the find region is different from the cross-sectional shape of the second part of the source/drain of the second region.Type: GrantFiled: March 15, 2013Date of Patent: December 10, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-Woo Hyun, Yu-Gyun Shin, Sun-Ghil Lee, Hong-Sik Yoon
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Patent number: 8535753Abstract: Methods of forming carbon nanotubes include forming a catalytic metal layer on a sidewall of an electrically conductive region, such as a metal or metal nitride pattern. A plurality of carbon nanotubes are grown from the catalytic metal layer. These carbon nanotubes can be grown from a sidewall of the catalytic metal layer. The plurality of carbon nanotubes are then exposed to an organic solvent. This step of exposing the carbon nanotubes to the organic solvent may be preceded by a step of applying centrifugal forces to the plurality of carbon nanotubes. Alternatively, the exposing step may include applying a centrifugal force to the plurality of carbon nanotubes while simultaneously exposing the plurality of carbon nanotubes to an organic solvent.Type: GrantFiled: November 25, 2009Date of Patent: September 17, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Xianfeng Wang, Hong-Sik Yoon, In-Seok Yeo
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Publication number: 20130228870Abstract: A semiconductor device includes a substrate, a first region and a second region. Each of the first region and second region includes a trench, an epitaxial layer including a source/drain having a first part and a second part, the first part extending from a top surface of the substrate to a top surface of the source/drain and the second part extending from the top surface of the substrate to a bottom surface of the source/drain in the trench. The cross-sectional shape of the first part of the source/drain of the first region is the same as the cross-sectional shape of the first part of the source/drain of the second region. The cross-sectional shape of the second part of the source/drain of the first region is different from the cross-sectional shape of the second part of the source/drain of the second region.Type: ApplicationFiled: March 15, 2013Publication date: September 5, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-Woo HYUN, Yu-Gyun SHIN, Sun-Ghil LEE, Hong-Sik YOON
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Patent number: 8451645Abstract: A variable resistance memory device includes a variable resistance memory cell, and a by-pass circuit configured to electrically by-pass a programming pulse supplied to the variable resistance memory cell after a resistive state of the variable resistance memory cell has changed in response to the programming pulse.Type: GrantFiled: August 6, 2010Date of Patent: May 28, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Hong-Sik Yoon, Min-Young Park, In-Gyu Baek, Hyun-Jun Sim, Jin-Shi Zhao
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Method of fabricating a semiconductor device including forming trenches having particular structures
Patent number: 8415224Abstract: A method of fabricating a semiconductor device and a semiconductor device are provided. The method includes method of fabricating a semiconductor device including providing a semiconductor substrate having a first semiconductor device region and a second semiconductor device region defined therein, forming a first gate structure in the first semiconductor device region, forming a second gate structure in the second semiconductor device region, forming a first trench adjacent to a first side of the first gate structure, forming a second trench adjacent to a first side of the second gate structure, and forming a first semiconductor pattern in the first trench and forming a second semiconductor pattern in the second trench, wherein the first and second trenches have different cross-sectional shapes from each other.Type: GrantFiled: July 15, 2011Date of Patent: April 9, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-Woo Hyun, Yu-Gyun Shin, Sun-Ghil Lee, Hong-Sik Yoon -
Patent number: 8405137Abstract: Single transistor floating-body DRAM devices have a vertical channel transistor structure. The DRAM devices include a substrate, and first and second floating bodies disposed on the substrate and isolated from each other. A source region and a drain region are disposed under and above each of the first and second floating bodies. A gate electrode is disposed between the first and second floating bodies. Methods of fabricating the single transistor floating-body DRAM devices are also provided.Type: GrantFiled: November 21, 2011Date of Patent: March 26, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Zong-Liang Huo, Seung-Jae Baik, In-Seok Yeo, Hong-Sik Yoon, Shi-Eun Kim
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Patent number: 8358527Abstract: Multi-level nonvolatile memory devices using variable resistive elements, the multi-level nonvolatile memory devices including a word line, a bit line, and a multi-level memory cell coupled between the word line and the bit line, the multi-level memory cell having first resistance level and a second resistance level higher than the first resistance level when the first and second write biases having the same polarity are applied thereto, and a third resistance level and a fourth resistance level ranging between the first and second resistance levels, when third and fourth write biases having different polarities from each other are applied thereto.Type: GrantFiled: February 16, 2010Date of Patent: January 22, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: In-Gyu Baek, Hyun-Jun Sim, Hong-Sik Yoon, Jin-Shi Zhao, Min-Young Park
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Publication number: 20120306004Abstract: Provided is a semiconductor memory device. The semiconductor memory device may include a local bitline extending in a direction substantially vertical to an upper surface of a semiconductor substrate and a local wordline intersecting the local bitline. The local bitline is electrically connected to a bitline channel pillar penetrating a gate of a bitline transistor, and the local wordline is electrically connected to a wordline channel pillar penetrating a gate of a wordline transistor.Type: ApplicationFiled: August 14, 2012Publication date: December 6, 2012Inventors: Hong Sik Yoon, Jinshi Zhao, Ingyu Baek, Hyun Jun Sim, Minyoung Park
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Patent number: 8264018Abstract: Provided is a semiconductor memory device. The semiconductor memory device may include a local bitline extending in a direction substantially vertical to an upper surface of a semiconductor substrate and a local wordline intersecting the local bitline. The local bitline is electrically connected to a bitline channel pillar penetrating a gate of a bitline transistor, and the local wordline is electrically connected to a wordline channel pillar penetrating a gate of a wordline transistor.Type: GrantFiled: May 11, 2010Date of Patent: September 11, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Hong Sik Yoon, Jinshi Zhao, Ingyu Baek, Hyun Jun Sim, Minyoung Park