Patents by Inventor Nam-Sung Cho
Nam-Sung Cho 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: 9530963Abstract: Provided is a method of manufacturing an organic light-emitting device including a graphene layer. The method of manufacturing an organic light-emitting device according to the present invention may include providing a graphene donor unit including a patterned graphene layer, providing a device unit, and attaching the graphene layer of the graphene donor unit to an organic part. The device unit may include a substrate, a lower electrode, and the organic part which are sequentially stacked, and the organic part may include a dopant. The graphene donor unit may include the graphene layer, a release layer, and an elastic stamp layer which are sequentially stacked.Type: GrantFiled: August 1, 2014Date of Patent: December 27, 2016Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jong Tae Lim, Jeong Ik Lee, Hye Yong Chu, Joon Tae Ahn, Jonghee Lee, Jun-Han Han, Ji-Young Oh, Byoung Gon Yu, Jaehyun Moon, Nam Sung Cho
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Publication number: 20160168712Abstract: Provided are a random wrinkle structure-formable compound, a composition including the same, a film including a random wrinkle structure, a method of forming the film, and an organic light emitting device including the film. A compound according to the present invention is coated and then, a film having a surface structure of random wrinkles may be simply formed through simple ultraviolet (UV) curing or thermosetting. When the film thus formed is used in an organic light emitting device, light generated from the organic light emitting device is scattered on surfaces of the random wrinkles to prevent light guide or total reflection, and thus, light is extracted to the outside. That is, a random structure disposed at the outside of the device performs a light extraction function and consequently, light efficiency of the organic light emitting device may be increased.Type: ApplicationFiled: February 9, 2016Publication date: June 16, 2016Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jaehyun MOON, Seung Koo PARK, JEONG IK LEE, Jin Wook SHIN, Doo-Hee CHO, Joo Hyun HWANG, Chul Woong JOO, Jun-Han HAN, Jin Woo HUH, Joon Tae AHN, Nam Sung CHO, Hye Yong CHU, Byoung Gon YU
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Publication number: 20160164038Abstract: Provided is an organic light emitting diode including a substrate, a light scattering structure including nano-structures on the substrate, a thin film on the nano-structures, and an air gap between the nano-structures, a planarizing layer covering the thin film and thicker than the thin film, a first electrode on the planarizing layer, an organic emission layer on the first electrode, and a second electrode on the organic emission layer.Type: ApplicationFiled: November 16, 2015Publication date: June 9, 2016Inventors: Jin Wook SHIN, Jonghee LEE, JEONG IK LEE, Hyunsu CHO, Jun-Han HAN, Jaehyun MOON, Nam Sung CHO, Doo-Hee CHO
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Publication number: 20160155994Abstract: Provided is a method of manufacturing an organic light-emitting diode including forming an anode on a substrate, forming an organic light-emitting layer on the anode, forming a cathode on the organic light-emitting layer, and forming a light scattering film on the cathode. The light scattering film is a polycrystalline dielectric material composed of anisotropic crystals, and a surface roughness Ra of a top surface of the light scattering film is greater than or equal to about 50 nm by an anisotropic crystal growth of particles of the dielectric material.Type: ApplicationFiled: February 8, 2016Publication date: June 2, 2016Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Doo-Hee CHO, JEONG IK LEE, Jin Wook SHIN, Jin Woo HUH, Nam Sung CHO, Jonghee LEE, Seung Koo PARK, Jaehyun MOON
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Patent number: 9349992Abstract: Provided is a method of fabricating an organic scattering layer. The method may include providing a deposition apparatus with a reaction chamber and a source chamber, loading a substrate in the reaction chamber, supplying carrier gas into the source chamber that may be configured to supply an evaporated organic source material into the reaction chamber, a temperature of the carrier gas ranging from 25° C. to 50° C., and spraying the carrier gas and the evaporated organic source material into the reaction chamber through a showerhead to deposit an organic scattering layer on the substrate, the organic scattering layer including organic particles, which may be provided in a molecularized form of the evaporated organic source material, and thereby having an uneven surface.Type: GrantFiled: September 21, 2015Date of Patent: May 24, 2016Assignees: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, UNITEX CO., LTDInventors: Nam Sung Cho, Jeong Ik Lee, Joo Hyun Hwang, Chul Woong Joo, Jun-Han Han, Seung Koo Park, Jaehyun Moon, Doo-Hee Cho, Jin Wook Shin, Hye Yong Chu, Seongdeok Ahn, Jin Woo Huh, Myung Gi Lee, Kyung Soo Suh, Byoung Gon Yu
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Patent number: 9324958Abstract: A red phosphorescent compound includes a host material being capable of transporting an electron or a hole; and a dopant material represented by following Formula 1: wherein the is one of and each of R1 to R4 is one of the group consisting of hydrogen atom (H), C1 to C6 substituted or non-substituted alkyl group, C1 to C6 substituted or non-substituted alkoxy group, and halogen atom.Type: GrantFiled: February 11, 2015Date of Patent: April 26, 2016Assignee: LG Display Co., Ltd.Inventors: Do-Han Kim, Chun-Gun Park, Jong-Kwan Bin, Kyung-Hoon Lee, Hyun-Cheol Jeong, Dong-Hee Yoo, Nam-Sung Cho, Jong-Hyun Park, Tae-Han Park, Soon-Wook Cha, Seung-Jae Lee, In-Bum Song, Jung-Keun Kim
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Patent number: 9284486Abstract: A blue fluorescent compound includes a host material being capable of transporting an electron or a hole; and a dopant material represented by following Formula 1: [Formula 1] wherein each of the R1, the R2, the R3, the R4, and the R5 is selected from hydrogen, fluorine, C1-C6 substituted or non-substituted alkyl group, C6-C30 substituted or non-substituted aromatic group, and C6-C30 substituted or non-substituted heterocyclic group, and two of the R1, the R2, the R3, the R4 and the R5 are fluorine and wherein the R6 is selected from the C6-C30 substituted or non-substituted aromatic group, and the C6-C30 substituted or non-substituted heterocyclic group.Type: GrantFiled: December 18, 2009Date of Patent: March 15, 2016Assignee: LG Display Co., Ltd.Inventors: Seung-Jae Lee, Soon-Wook Cha, In-Bum Song, Jung-Keun Kim, Do-Han Kim, Chun-Gun Park, Jong-Kwan Bin, Nam-Sung Cho
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Publication number: 20160013448Abstract: Provided is a method of fabricating an organic scattering layer. The method may include providing a deposition apparatus with a reaction chamber and a source chamber, loading a substrate in the reaction chamber, supplying carrier gas into the source chamber that may be configured to supply an evaporated organic source material into the reaction chamber, a temperature of the carrier gas ranging from 25° C. to 50° C., and spraying the carrier gas and the evaporated organic source material into the reaction chamber through a showerhead to deposit an organic scattering layer on the substrate, the organic scattering layer including organic particles, which may be provided in a molecularized form of the evaporated organic source material, and thereby having an uneven surface.Type: ApplicationFiled: September 21, 2015Publication date: January 14, 2016Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, UNITEX Co., LTDInventors: Nam Sung CHO, Jeong Ik LEE, Joo Hyun HWANG, Chul Woong JOO, Jun-Han HAN, Seung Koo PARK, Jaehyun MOON, Doo-Hee CHO, Jin Wook SHIN, Hye Yong CHU, Seongdeok AHN, Jin Woo HUH, Myung Gi LEE, Kyung Soo SUH, Byoung Gon YU
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Publication number: 20150340659Abstract: Provided is an organic light emitting diodes (OLED) and method of manufacturing the OLED. The OLED includes: a substrate; a light scattering layer having an uneven shape on the substrate; a transparent electrode film provided directly on and in contact with the light scattering layer; an organic light emitting layer on the transparent electrode film; and an electrode on the organic light emitting layer. The method of manufacturing the OLED includes: disposing a light scattering layer on a substrate; providing a transparent electrode film on the light scattering layer; and transferring the transparent electrode film to be directly on and in contact with the light scattering layer.Type: ApplicationFiled: March 19, 2015Publication date: November 26, 2015Applicant: Electronics and Telecommunications Research InstituteInventors: Jin Wook SHIN, Jeong Ik LEE, HongKyw CHOI, Jaehyun MOON, Jonghee LEE, Nam Sung CHO, Doo-Hee CHO, Chul Woong JOO, Jun-Han HAN
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Patent number: 9147856Abstract: An organic light emitting device is provided that includes a substrate; an embossing layer provided on the substrate; a planarization layer provided on the embossing layer; a first electrode provided on the planarization layer; an organic light emitting layer provided on the first electrode; and a second electrode provided on the organic light emitting layer. The planarization layer may include a first planarization layer provided on the embossing layer; and a second planarization layer provided on the first planarization layer. The embossing layer may have a refractive index ranging from about 1.3 to about 1.5. The planarization layer may include a first planarization layer having a surface roughness of about 10 nm to about 50 nm and a refractive index that ranges from about 1.8 to about 2.5; and a second planarization layer provided on the first planarization layer and having a surface roughness of less than about 10 nm.Type: GrantFiled: December 10, 2012Date of Patent: September 29, 2015Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Doo-Hee Cho, Jin Wook Shin, Jeong Ik Lee, Hye Yong Chu, Jun-Han Han, Joo Hyun Hwang, Seung Koo Park, Jaehyun Moon, Nam Sung Cho, Jin Woo Huh, Chul Woong Joo
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Patent number: 9123900Abstract: A host material is disclosed. The host material, as a compound which is represented by the following formula 1, has a chemical structure in which nitrogen and silicon atoms are chemically and directly bonded to each other. Wherein the “a” is one selected from a material group which includes N, S, O, SO2 and NSiG1G2G3, and the “G1, G2 and G3” each become one of a hydrogen, and aromatic, heterocyclic and aliphatic groups which are or not substituted, respectively.Type: GrantFiled: November 29, 2012Date of Patent: September 1, 2015Assignee: LG Display Co., Ltd.Inventors: Jong Kwan Bin, In Bum Song, Jung Keun Kim, Nam Sung Cho, Bang Sook Lee, Suk Young Bae, Young Ju Ryu
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Publication number: 20150214485Abstract: Provided is a method of manufacturing an organic light-emitting device including a graphene layer. The method of manufacturing an organic light-emitting device according to the present invention may include providing a graphene donor unit including a patterned graphene layer, providing a device unit, and attaching the graphene layer of the graphene donor unit to an organic part. The device unit may include a substrate, a lower electrode, and the organic part which are sequentially stacked, and the organic part may include a dopant. The graphene donor unit may include the graphene layer, a release layer, and an elastic stamp layer which are sequentially stacked.Type: ApplicationFiled: August 1, 2014Publication date: July 30, 2015Applicant: Electronics and Telecommunications Research InstituteInventors: Jong Tae LIM, Jeong Ik LEE, Hye Yong CHU, Joon Tae AHN, Jonghee LEE, Jun-Han HAN, Ji-Young OH, Byoung Gon YU, Jaehyun MOON, Nam Sung CHO
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Publication number: 20150200382Abstract: Provided is an organic light-emitting diode (OLED) including: a substrate; a wide viewing-angle homogenization layer on the substrate; a first electrode layer on the wide viewing-angle homogenization layer; a hole transport layer on the first electrode layer; an organic emission layer disposed on the hole transport layer to emit a light; an electron transport layer on the organic emission layer; and a second electrode layer on the electron transport layer.Type: ApplicationFiled: August 5, 2014Publication date: July 16, 2015Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jaehyun MOON, Seung Koo PARK, Doo-Hee CHO, Jonghee LEE, Jin Woo HUH, Jin Wook SHIN, Jun-Han HAN, Joo Hyun HWANG, Chul Woong JOO, Nam Sung CHO, Jong Tae LIM, Byoung Gon YU, Jeong Ik LEE
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Publication number: 20150155503Abstract: A red phosphorescent compound includes a host material being capable of transporting an electron or a hole; and a dopant material represented by following Formula 1: wherein the is one of and each of R1 to R4 is one of the group consisting of hydrogen atom (H), C1 to C6 substituted or non-substituted alkyl group, C1 to C6 substituted or non-substituted alkoxy group, and halogen atom.Type: ApplicationFiled: February 11, 2015Publication date: June 4, 2015Inventors: Do-Han Kim, Chun-Gun Park, Jong-Kwan Bin, Kyung-Hoon Lee, Hyun-Cheol Jeong, Dong-Hee Yoo, Nam-Sung Cho, Jong-Hyun Park, Tae-Han Park, Soon-Wook Cha, Seung-Jae Lee, In-Bum Song, Jung-Keun Kim
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Patent number: 9040963Abstract: Provided is an organic light emitting device. The organic light emitting device comprising a first light emitting part on a substrate, emitting a first light of a first wavelength, wherein the first light emitting part includes a transparent first electrode, a first organic light emitting layer, and a transparent second electrode sequentially stacked on the substrate, a second light emitting part on the first light emitting part, emitting a second light of a second wavelength, wherein the second light emitting part includes a transparent third electrode, a second organic light emitting layer, and a reflective fourth electrode sequentially stacked on the first light emitting part, and a fluorescent material disposed at least one between the substrate and the first light emitting part, and between the first light emitting part and second light emitting part.Type: GrantFiled: December 3, 2012Date of Patent: May 26, 2015Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jeong Ik Lee, Chul Woong Joo, Jun-Han Han, Joo Hyun Hwang, Nam Sung Cho, Jin Woo Huh, Jaehyun Moon, Seung Koo Park, Jin Wook Shin, Doo-Hee Cho, Hye Yong Chu
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Publication number: 20150086761Abstract: Provided is a method of fabricating a light functional substrate. The method includes applying particles onto a surface of water contained in a container to form a monolayer constituted by the particles, immersing a substrate into the container, drawing the substrate out of the container to form patterns constituted by the particles on the substrate in a first direction, and forming a planarization film covering the patterns on the substrate.Type: ApplicationFiled: March 14, 2014Publication date: March 26, 2015Applicant: Electronics and Telecommunications Research InstituteInventors: Jaehyun MOON, Seung Koo PARK, Doo-Hee CHO, Jin Wook SHIN, Jun-Han HAN, Jonghee LEE, Joo Hyun HWANG, Chul Woong JOO, Jin Woo HUH, Nam Sung CHO, Jong Tae LIM, Jeong Ik LEE, Byoung Gon YU
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Patent number: 8986853Abstract: A red phosphorescent compound includes a host material being capable of transporting an electron or a hole; and a dopant material represented by following Formula 1: and each of R1 to R4 is one of the group consisting of hydrogen atom (H), C1 to C6 substituted or non-substituted alkyl group, C1 to C6 substituted or non-substituted alkoxy group, and halogen atom.Type: GrantFiled: December 1, 2009Date of Patent: March 24, 2015Assignee: LG Display Co., Ltd.Inventors: Do Han Kim, Chun Gun Park, Jong-Kwan Bin, Kyung Hoon Lee, Hyun-cheol Jeong, Dong-hee Yoo, Nam Sung Cho, Jong-Hyun Park, Tae han Park, Soon Wook Cha, Seung Jae Lee, In Bum Song, Jung Keun Kim
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Publication number: 20150041771Abstract: Provided is a method of manufacturing an organic light-emitting diode including forming an anode on a substrate, forming an organic light-emitting layer on the anode, forming a cathode on the organic light-emitting layer, and forming a light scattering film on the cathode. The light scattering film is a polycrystalline dielectric material composed of anisotropic crystals, and a surface roughness Ra of a top surface of the light scattering film is greater than or equal to about 50 nm by an anisotropic crystal growth of particles of the dielectric material.Type: ApplicationFiled: April 2, 2014Publication date: February 12, 2015Applicant: Electronics and Telecommunications Research InstituteInventors: Doo-Hee CHO, Jeong Ik LEE, Jin Wook SHIN, Jin Woo HUH, Nam Sung CHO, Jonghee LEE, Seung Koo PARK, Jaehyun MOON
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Patent number: 8940409Abstract: Disclosed is an organic light emitting material having the following chemical formula, for improving luminous efficiency, where R1, R2, R3 and R4 denote materials selected from an aromatic group with 6-24 carbon atoms (C6-C24), the group being independently substituted or unsubstituted, preferably, an aromatic group with 6-24 carbon atoms (C6-C24), the group consisting of trimethylsilane (TMS), CN, halogen (F, Cl, Br) alkyl groups with 1-4 carbon atoms (C1-C4).Type: GrantFiled: December 24, 2009Date of Patent: January 27, 2015Assignee: LG Display Co., Ltd.Inventors: Jong-Kwan Bin, Soon-Wook Cha, Seung-Jae Lee, In-Bum Song, Jung-Keun Kim, Do-Han Kim, Chun-Gun Park, Nam-Sung Cho
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Patent number: 8901548Abstract: Provided is a dual-mode display including a substrate, and a plurality of sub pixels on the substrate. Each of the sub pixels may include an emissive device, a reflective optical filter provided on a surface of the emissive device, and an optical shutter provided on other surface of the emissive device.Type: GrantFiled: June 18, 2013Date of Patent: December 2, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Joon Tae Ahn, Jeong Ik Lee, Jaehyun Moon, Seung Koo Park, Nam Sung Cho, Doo-Hee Cho, Jun-Han Han, Joo Hyun Hwang, Jin Wook Shin, Jong Tae Lim, Chul Woong Joo, Jin Woo Huh, Chi-Sun Hwang, Hojun Ryu, Jae Bon Koo, Hye Yong Chu