Patents by Inventor Doo-Hee Cho
Doo-Hee 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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Publication number: 20170108621Abstract: Provided are an optical device and a manufacturing method thereof. The method of manufacturing an optical device may include providing a substrate structure, and depositing an array including curved structures on the substrate structure. The curved structures may include a crystalline organic compound.Type: ApplicationFiled: October 14, 2016Publication date: April 20, 2017Applicant: Electronics and Telecommunications Research InstituteInventors: YOUNG SAM PARK, Doo-Hee CHO, JEONG IK LEE, Jonghee LEE, Seongdeok AHN, Byoung Gon YU, Nam Sung CHO
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Patent number: 9605347Abstract: Provided is a method of forming a film having a surface structure of a random wrinkles. 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: GrantFiled: February 9, 2016Date of Patent: March 28, 2017Assignee: 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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Patent number: 9577223Abstract: 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: GrantFiled: March 19, 2015Date of Patent: February 21, 2017Assignee: 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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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: 20160159686Abstract: A composition for forming film having wrinkle structure and a method of forming the film are disclosed. The composition includes photo-curable agent and photoinitiator dissolved in the photo-curable agent. The cut off wavelength of light transmittance of the photo-curable agent is greater than the cut off wavelength of light absorbance of the photoinitiator. Photo-cured thin film is formed at the upper portion of composition layer at an initial time period of irradiation. By subsequent contraction, the photo-cured thin film forms wrinkles. The wrinkle structure is controlled by the relation of the cut off wavelength of light transmittance of the photo-curable agent and the cut off wavelength of light absorbance of the photoinitiator, the photo-curing rate of the composition and the thickness of the composition layer, and the photoinitiator concentration, etc., before photo-curing. The film may increase the emission efficiency of LED and OLED and the sensing effect of sensor.Type: ApplicationFiled: August 10, 2015Publication date: June 9, 2016Inventors: Seung Koo PARK, Jaehyun MOON, JEONG IK LEE, Byoung Gon YU, Jonghee LEE, Chul Woong JOO, Doo-Hee CHO, Jun-Han HAN
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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: 9356261Abstract: The inventive concept provides light emitting devices and methods of manufacturing a light emitting device. The light emitting device may include a transparent substrate including a first region and a second region, a first transparent electrode disposed on a first surface of the transparent substrate, a second transparent electrode facing and spaced apart from the first transparent electrode, an organic light emitting layer disposed between the first and second transparent electrodes, an assistant electrode disposed between the first and second transparent electrodes and selectively masking the second region, and a light path changing structure disposed on a second surface of the transparent substrate and selectively masking the second region.Type: GrantFiled: January 30, 2015Date of Patent: May 31, 2016Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jeong Ik Lee, Jin Woo Huh, Hye Yong Chu, Doo-Hee Cho, Jun-Han Han, Jin Wook Shin, Jaehyun Moon, Joo Hyun Hwang, Chul Woong Joo
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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: 9343486Abstract: Provided is a display device and a method of manufacturing the same. The display device includes a thin film transistor, a first electrode electrically connected to the thin film transistor, a self-light emitting pixel layer disposed on the first electrode, a second electrode disposed on the self-light emitting pixel layer, a substrate in which an auxiliary wire is buried, the substrate being disposed on the second electrode, and a reflective pixel layer disposed on the substrate.Type: GrantFiled: August 1, 2014Date of Patent: May 17, 2016Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jonghee Lee, Jeong Ik Lee, Doo-Hee Cho, Jong Tae Lim, Ji-Young Oh, Joo Yeon Kim, Byoung Gon Yu, Hyunkoo Lee, Jun-Han Han, Hye Yong Chu
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Publication number: 20160064693Abstract: Provided is a method of fabricating a light scattering layer. The method includes: coating a first surface of a substrate with a nano structure; and etching the substrate exposed to the nano structure by using the nano structure as an etching mask to allow the first surface of the substrate to have a recess to form first partitions protruding from the first surface of the substrate.Type: ApplicationFiled: June 11, 2015Publication date: March 3, 2016Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jaehyun MOON, Jin Wook SHIN, Jonghee LEE, Seung Koo PARK, JEONG IK LEE, Doo-Hee CHO, Chul Woong JOO, Jun-Han HAN
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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: 9123914Abstract: Provided are an electronic device and a fabrication method thereof. The electronic device according to the concept of the present invention includes auxiliary interconnections disposed on a substrate, a light extraction layer that is provided on the substrate and fills between the auxiliary interconnection, and a first electrode provided on the auxiliary interconnections and the light extraction layer, wherein the light extraction layer may have a first surface facing the substrate and a second surface opposite to the first surface, the first surface may have protrusions, and the auxiliary interconnections may include a material having a lower resistance than the first electrode. Since electrical properties of the electronic device are improved, uniform light emission characteristics may be realized.Type: GrantFiled: May 5, 2014Date of Patent: September 1, 2015Assignees: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE, KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Jeong Ik Lee, Jonghee Lee, Doo-Hee Cho, Jun-Han Han, Geon-Woong Lee, Joong-Tak Han, Do-Geun Kim, Sunghoon Jung
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Publication number: 20150214452Abstract: Provided is a display device and a method of manufacturing the same. The display device includes a thin film transistor, a first electrode electrically connected to the thin film transistor, a self-light emitting pixel layer disposed on the first electrode, a second electrode disposed on the self-light emitting pixel layer, a substrate in which an auxiliary wire is buried, the substrate being disposed on the second electrode, and a reflective pixel layer disposed on the substrate.Type: ApplicationFiled: August 1, 2014Publication date: July 30, 2015Applicant: Electronics and Telecommunications Research InstituteInventors: Jonghee LEE, Jeong Ik LEE, Doo-Hee CHO, Jong Tae LIM, Ji-Young OH, Joo Yeon KIM, Byoung Gon YU, Hyunkoo LEE, Jun-Han HAN, Hye Yong CHU
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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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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: 20150140708Abstract: The inventive concept provides light emitting devices and methods of manufacturing a light emitting device. The light emitting device may include a transparent substrate including a first region and a second region, a first transparent electrode disposed on a first surface of the transparent substrate, a second transparent electrode facing and spaced apart from the first transparent electrode, an organic light emitting layer disposed between the first and second transparent electrodes, an assistant electrode disposed between the first and second transparent electrodes and selectively masking the second region, and a light path changing structure disposed on a second surface of the transparent substrate and selectively masking the second region.Type: ApplicationFiled: January 30, 2015Publication date: May 21, 2015Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jeong Ik LEE, Jin Woo Huh, Hye Yong CHU, Doo-Hee CHO, Jun-Han HAN, Jin Wook SHIN, Jaehyun MOON, Joo Hyun HWANG, Chul Woong JOO
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Patent number: 8994059Abstract: The inventive concept provides organic light emitting diodes and methods of manufacturing an organic light emitting diode. The organic light emitting diode includes a substrate, a first electrode layer and a second electrode layer formed on the substrate, an organic light emitting layer disposed between the first electrode layer and the second electrode layer and generating light, and a scattering layer between the first electrode layer and the substrate or between the first electrode layer and the organic light emitting layer. The scattering layer scatters the light.Type: GrantFiled: February 19, 2014Date of Patent: March 31, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Jin Woo Huh, Jeong Ik Lee, Chul Woong Joo, Doo-Hee Cho, Jin Wook Shin, Jaehyun Moon, Jun-Han Han, Joo Hyun Hwang, Hye Yong Chu, Byoung Gon Yu