Patents by Inventor Eun-Sik Jang
Eun-Sik Jang 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: 20240141231Abstract: A semiconductor nanocrystal including an anion of an inorganic metal salt and a first organic ligand bound to a surface of the semiconductor nanocrystal, wherein the first organic ligand includes a substituted or unsubstituted C6 to C30 aromatic ring group and a carboxylate, a substituted or unsubstituted C3 to C30 aromatic hetero cyclic group and a carboxylate, or a combination thereof.Type: ApplicationFiled: December 11, 2023Publication date: May 2, 2024Inventors: Kwanghee KIM, Tae Hyung KIM, Hongkyu SEO, Won Sik YOON, Jaeyong LEE, Eun Joo JANG, Oul CHO
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Patent number: 11963376Abstract: A light emitting device includes: a first electrode and a second electrode facing each other, an emissive layer disposed between the first electrode and the second electrode and including a quantum dot, an electron auxiliary layer disposed between the emissive layer and the second electrode and including a plurality of nanoparticles, and a polymer layer between a portion of the second electrode and the electron auxiliary layer, wherein the nanoparticles include a metal oxide including zinc, wherein the second electrode has a first surface facing a surface of the electron auxiliary layer and a second surface opposite to the first surface, and the polymer layer is disposed on a portion of the second surface and a portion of the surface of the electron auxiliary layer, and wherein the polymer layer includes a polymerization product of a thiol compound and an unsaturated compound having at least two carbon-carbon unsaturated bonds.Type: GrantFiled: September 14, 2022Date of Patent: April 16, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tae Ho Kim, Won Sik Yoon, Jeong Hee Lee, Eun Joo Jang, Oul Cho
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Patent number: 11957046Abstract: An electroluminescent device includes a first electrode and a second electrode facing each other; an emission layer disposed between the first electrode and the second electrode and including a plurality of quantum dots and a first hole transporting material having a substituted or unsubstituted C4 to C20 alkyl group attached to a backbone structure; a hole transport layer disposed between the emission layer and the first electrode and including a second hole transporting material; and an electron transport layer disposed between the emission layer and the second electrode.Type: GrantFiled: September 6, 2019Date of Patent: April 9, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Moon Gyu Han, Dae Young Chung, Kwanghee Kim, Eun Joo Jang, Chan Su Kim, Kun Su Park, Won Sik Yoon
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Patent number: 11939698Abstract: A wafer manufacturing method, an epitaxial wafer manufacturing method, and a wafer and epitaxial wafer manufactured thereby, are provided. The wafer manufacturing method enables the manufacture of a wafer with a low density of micropipe defects and minimum numbers of particles and scratches. The epitaxial wafer manufacturing method enables the manufacture of an epitaxial wafer that has low densities of defects such as downfall, triangular, and carrot defects, exhibits excellent device characteristics, and improves the yield of devices.Type: GrantFiled: November 3, 2020Date of Patent: March 26, 2024Assignee: SENIC INC.Inventors: Jong Hwi Park, Jung-Gyu Kim, Eun Su Yang, Byung Kyu Jang, Jung Woo Choi, Yeon Sik Lee, Sang Ki Ko, Kap-Ryeol Ku
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Publication number: 20240076799Abstract: A wafer manufacturing method, an epitaxial wafer manufacturing method, and a wafer and epitaxial wafer manufactured thereby, are provided. The wafer manufacturing method enables the manufacture of a wafer with a low density of micropipe defects and minimum numbers of particles and scratches. The epitaxial wafer manufacturing method enables the manufacture of an epitaxial wafer that has low densities of defects such as downfall, triangular, and carrot defects, exhibits excellent device characteristics, and improves the yield of devices.Type: ApplicationFiled: November 1, 2023Publication date: March 7, 2024Applicant: SENIC INC.Inventors: Jong Hwi PARK, Jung-Gyu KIM, Eun Su YANG, Byung Kyu JANG, Jung Woo CHOI, Yeon Sik LEE, Sang Ki KO, Kap-Ryeol KU
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Patent number: 11925044Abstract: A light emitting device includes: a first electrode and a second electrode facing each other, an emissive layer disposed between the first electrode and the second electrode and including a quantum dot, an electron auxiliary layer disposed between the emissive layer and the second electrode and including a plurality of nanoparticles, and a polymer layer between a portion of the second electrode and the electron auxiliary layer, wherein the nanoparticles include a metal oxide including zinc, wherein the second electrode has a first surface facing a surface of the electron auxiliary layer and a second surface opposite to the first surface, and the polymer layer is disposed on a portion of the second surface and a portion of the surface of the electron auxiliary layer, and wherein the polymer layer includes a polymerization product of a thiol compound and an unsaturated compound having at least two carbon-carbon unsaturated bonds.Type: GrantFiled: September 14, 2022Date of Patent: March 5, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tae Ho Kim, Won Sik Yoon, Jeong Hee Lee, Eun Joo Jang, Oul Cho
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Patent number: 11925043Abstract: A quantum dot light-emitting device including first electrode and a second electrode, a quantum dot layer between the first electrode and the second electrode, a first electron transport layer and a second electron layer disposed between the quantum dot layer and the second electrode. The second electron transport layer is disposed between the quantum dot layer and the first electron transport layer, wherein each of the first electron transport layer and the second electron transport layer includes an inorganic material. A lowest unoccupied molecular orbital energy level of the second electron transport layer is shallower than a lowest unoccupied molecular orbital energy level of the first electron transport layer, and a lowest unoccupied molecular orbital energy level of the quantum dot layer is shallower than a lowest unoccupied molecular orbital energy level of the second electron transport layer. An electronic device including the quantum dot light-emitting device.Type: GrantFiled: October 16, 2020Date of Patent: March 5, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Moon Gyu Han, Heejae Lee, Eun Joo Jang, Tae Ho Kim, Kun Su Park, Won Sik Yoon, Hyo Sook Jang
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Patent number: 11917841Abstract: A light-emitting device including a first electrode, a second electrode, and a light-emitting film disposed between the first electrode and the second electrode, and a method of producing the device. The light-emitting film includes a fluorine-containing organic salt, and quantum dots that do not include cadmium, lead, or a combination thereof, and the fluorine-containing organic salt includes a substituted or unsubstituted C1 to C30 hydrocarbon group, a non-metallic element, fluorine, and at least one of boron or phosphorus, and the non-metallic element includes carbon, nitrogen, oxygen, phosphorus, sulfur, or selenium.Type: GrantFiled: December 16, 2020Date of Patent: February 27, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jaejun Chang, Kwanghee Kim, Won Sik Yoon, Eun Joo Jang, Oul Cho
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Patent number: 9459681Abstract: An apparatus to control power of an electronic device includes a local area network (LAN) controller to control network communication of the electronic device, a communication interface connected to an external dongle to perform the network communication, a connection detector to detect whether a first signal for connection with the LAN controller is received from the external dongle, and a power controller to supply power to the LAN controller when the first signal is detected and to shut off power to the LAN controller when the first signal is not detected.Type: GrantFiled: November 14, 2012Date of Patent: October 4, 2016Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Byung-gil Jeon, Eun-sik Jang
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Publication number: 20070124442Abstract: A computer and a control method thereof, includes: a connection interface to receive a communication signal having at least one of a first communication signal and a second communication signal; a communication signal sensor to sense whether the first communication signal is received through the connection interface; a communication driver to communicate with an external apparatus in accordance with whether at least one of the first communication signal and the second communication signal is received through the connection interface; a route selector to select a route in which the communication signal is applied; and a control to control the route selector so that the communication signal is applied to one of the communication signal sensor and the communication driver in accordance with whether the communication signal is received. With this configuration, wasteful power consumption in the communication driver can be reduced.Type: ApplicationFiled: October 10, 2006Publication date: May 31, 2007Applicant: Samsung Electronics Co., Ltd.Inventor: Eun-sik Jang
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Publication number: 20050036285Abstract: A portable computer system including a main body having a network controller controlling a network connection, a first Hard Disk Drive (HDD), and a first disk switching part for disconnecting the first HDD from the system. A docking unit is detachably attached to the main body, and a network switching part is installed in the docking unit. The network switching part allows the network controller to selectively access either an inner network or an outer network. A switching controller is installed in a side of either the main body or the docking unit, and controls the network switching part to access either the inner network or the outer network, and controls the first disk switching part to disconnect the first HDD from the system if the network controller accesses the outer network.Type: ApplicationFiled: April 26, 2004Publication date: February 17, 2005Applicant: Samsung Electronics Co., Ltd.Inventors: Cheon-Moo Lee, Eun-Sik Jang