Patents by Inventor Woo-young Chang
Woo-young Chang 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: 20240145752Abstract: A fuel cell apparatus of the disclosure includes a case having defined therein a first accommodation space and a second accommodation space, which are isolated from each other by a partition wall, a first cover covering the first accommodation space in the case, a second cover covering the second accommodation space in the case, a power distribution unit disposed in the first accommodation space, and a power conversion unit disposed in the second accommodation space.Type: ApplicationFiled: May 11, 2023Publication date: May 2, 2024Inventors: Sae Kwon CHANG, Jong Jun LEE, Woo Young LEE, Yoon Tae KIM
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Publication number: 20240072283Abstract: A fuel cell vehicle includes a cell stack, a DC level converter, an output unit, a first switching unit disposed between a positive output terminal of the DC level converter and a positive input terminal of the output unit, a second switching unit disposed between a negative output terminal of the DC level converter and a negative input terminal of the output unit, a resistor and a third switching unit connected to each other in series between the positive output terminal of the DC level converter and the negative output terminal of the DC level converter, a fourth switching unit disposed between a contact point between the resistor and the third switching unit and the positive input terminal of the output unit, and a controller for controlling switching operation of the first, second, third and fourth switching units according to an operation mode.Type: ApplicationFiled: July 3, 2023Publication date: February 29, 2024Applicants: Hyundai Motor Company, KIA CORPORATIONInventors: Ki Wook Ohm, Woo Young Lee, Jong Jun Lee, Myung Jin Kim, Sae Kwon Chang, Yoon Tae Kim
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Patent number: 11877393Abstract: A stretchable circuit board according to an embodiment comprises: a substrate including one surface and the other surface opposite to the one surface; an electronic component disposed on the one surface of the substrate; and a wiring electrode disposed on the one surface of the substrate and connecting the electronic component, wherein the substrate includes an effective area, in which the electronic component is formed, and an ineffective area other than the effective area and includes a pattern part which is formed in the ineffective area and extends through the substrate from one surface to the other surface thereof.Type: GrantFiled: February 26, 2020Date of Patent: January 16, 2024Assignee: LG INNOTEK CO., LTD.Inventors: Duck Hoon Park, Woo Young Chang, Jee Heum Paik
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Publication number: 20230383394Abstract: A deposition mask according to an embodiment comprises: a metal plate including an Fe—Ni—based alloy and including a first surface and a second surface opposite to the first surface, wherein the metal plate comprises a through-hole including a small-area hole on the first surface of the metal plate and a large-area hole on the second surface of the metal plate, the compressive stress of the first surface is greater than that of the second surface, the tensile stress of the second surface is greater than that of the first surface, the metal plate is bent toward the second surface, and a height difference between the highest point and the lowest point of the first surface has a value equal to or less than 3 ?m.Type: ApplicationFiled: October 26, 2021Publication date: November 30, 2023Inventors: Woo Young CHANG, Ji Hoon KANG, Hae Sik Kim
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Publication number: 20220293870Abstract: A substrate for display comprises one surface, the other surface, a first area (folding area) and a second area (non-folding area). A first hole passing through the one surface and the other surface is formed on the first area. A 1-1 groove is formed on one surface of the first area in the direction from the one surface to the other surface. A 1-2 groove is formed on the other surface of the first area in the direction from the other surface to the one surface. A 2-1 groove is formed on one surface of the second area in the direction from the one surface to the other surface. A 2-2 groove is formed on the other surface of the second area in the direction from the other surface to the one surface. The 1-1 groove and 1-2 groove and the 2-1 groove and 2-2 groove do not overlap each other in the thickness direction of the substrate for display.Type: ApplicationFiled: July 27, 2020Publication date: September 15, 2022Inventors: Duck Hoon PARK, Hae Sik KIM, Woo Young CHANG, Jee Heum PAIK
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Publication number: 20220217840Abstract: A stretchable circuit board according to an embodiment comprises: a substrate including one surface and the other surface opposite to the one surface; an electronic component disposed on the one surface of the substrate; and a wiring electrode disposed on the one surface of the substrate and connecting the electronic component, wherein the substrate includes an effective area, in which the electronic component is formed, and an ineffective area other than the effective area and includes a pattern part which is formed in the ineffective area and extends through the substrate from one surface to the other surface thereof.Type: ApplicationFiled: February 26, 2020Publication date: July 7, 2022Inventors: Duck Hoon PARK, Woo Young CHANG, Jee Heum PAIK
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Publication number: 20210352814Abstract: A display substrate according to the embodiment includes: a base material having a long direction and a short direction, and including one surface and the other surface, and a first region and a second region; and a hole passing through the one surface and the other surface of the base material, wherein the first region is defined as a folding region in which the one surface is folded to face, the second region is defined as an unfolding region, the hole includes a first hole formed in the first region, and the first hole includes at least three first holes having different sizes in the long direction of the base material.Type: ApplicationFiled: January 10, 2020Publication date: November 11, 2021Inventors: Duck Hoon PARK, Hae Sik Kim, Jee Heum PAIK, Woo Young CHANG
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Publication number: 20210313515Abstract: In an alloy metal plate according to an embodiment, diffraction intensity of a (111) plane of the alloy metal plate is defined as I (111), diffraction intensity of a (200) plane of the alloy metal plate is defined as I (200), diffraction intensity of a (220) plane of the alloy metal plate is defined as I (220), a diffraction intensity ratio of I (200) is defined by the following Equation 1, and a diffraction intensity ratio of I (220) is defined by the following Equation 2. At this time, the A is 0.5 to 0.6, the B is 0.3 to 0.5, and the value A may be larger than a value B. A=I(200)/{1(200)+I(220)+I(111)}??[Equation 1] The diffraction intensity ratio of I (220) is defined by the following Equation 2.Type: ApplicationFiled: November 6, 2019Publication date: October 7, 2021Inventors: Hyun Joon JUNG, Woo Young CHANG, Duck Hoon PARK, Jee Heum PAIK
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Patent number: 9720551Abstract: A touch window includes a substrate, and an electrode on the substrate. The electrode includes a first mesh line, a second mesh line crossing the first mesh line and a reinforcement part adjacent to the first or second mesh line.Type: GrantFiled: July 15, 2015Date of Patent: August 1, 2017Assignee: LG INNOTEK CO., LTD.Inventors: Dong Woo Sohn, Woo Young Chang
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Patent number: 9678382Abstract: Provided is a light unit including a plurality of LED light sources formed on a PCB, a resin layer stacked on the PCB to diffuse and guide emitted light forwards, and a diffusion plate having an optical pattern printed thereon to shield light emitted from the LED light sources. The optical pattern is composed of a diffusion pattern implemented as at least one layer, or a combination of the diffusion pattern layer and a light shielding pattern. The light unit forms an optical pattern for shielding or diffusing light on a surface of a light diffusion plate of the back-light unit, and combines a diffusion pattern and a metal pattern to attain uniformity of light and realize a yellow-light shielding effect, thus leading to a reliable light quality.Type: GrantFiled: September 9, 2011Date of Patent: June 13, 2017Assignee: LG INNOTEK CO., LTD.Inventors: Kwang Ho Park, Woo Young Chang, Chul Hong Kim, Byoung Eon Lee
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Patent number: 9652563Abstract: Disclosed are a method of designing a random pattern, an apparatus for designing a random pattern and an optical substrate including a random pattern according to the same method. The method includes setting a plurality of unit valid pattern regions in a pattern design region; forming a random point coordinate in the unit valid pattern region; and connecting the random point coordinate in the unit valid pattern region to other random point coordinates adjacent to the random point coordinate in a first direction or a second direction.Type: GrantFiled: December 17, 2013Date of Patent: May 16, 2017Assignee: LG INNOTEK CO., LTD.Inventors: Woo Young Chang, Seung Heon Lee, Chi Goo Jun
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Patent number: 9344841Abstract: A mobile device and a server are provided. The mobile device displays relevant information extracted based on location information and additional information. Accordingly, by linking regional information acquired through a personal device with a location based service, the user is provided with useful contents effectively and further is provided with a new experience.Type: GrantFiled: August 24, 2010Date of Patent: May 17, 2016Assignee: Samsung Electronics Co., LtdInventors: Seung-dong Yu, Woo-young Chang, Se-jun Park, Min-jeong Moon, Ju-yun Sung, Hee-jeong Choo, Sang-woong Hwang, Jee-sun Yoon, Ji-young Kwahk
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Publication number: 20160034068Abstract: A touch window includes a substrate, and an electrode on the substrate. The electrode includes a first mesh line, a second mesh line crossing the first mesh line and a reinforcement part adjacent to the first or second mesh line.Type: ApplicationFiled: July 15, 2015Publication date: February 4, 2016Inventors: Dong Woo SOHN, Woo Young CHANG
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Publication number: 20140226312Abstract: Provided is a light unit including a plurality of LED light sources formed on a PCB, a resin layer stacked on the PCB to diffuse and guide emitted light forwards, and a diffusion plate having an optical pattern printed thereon to shield light emitted from the LED light sources. The optical pattern is composed of a diffusion pattern implemented as at least one layer, or a combination of the diffusion pattern layer and a light shielding pattern. The light unit forms an optical pattern for shielding or diffusing light on a surface of a light diffusion plate of the back-light unit, and combines a diffusion pattern and a metal pattern to attain uniformity of light and realize a yellow-light shielding effect, thus leading to a reliable light quality.Type: ApplicationFiled: September 9, 2011Publication date: August 14, 2014Applicant: LG INNOTEK CO., LTD.Inventors: Kwang Ho Park, Woo Young Chang, Chul Hong Kim, Byoung Eon Lee
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Publication number: 20140172379Abstract: Disclosed are a method of designing a random pattern, an apparatus for designing a random pattern and an optical substrate including a random pattern according to the same method. The method includes setting a plurality of unit valid pattern regions in a pattern design region; forming a random point coordinate in the unit valid pattern region; and connecting the random point coordinate in the unit valid pattern region to other random point coordinates adjacent to the random point coordinate in a first direction or a second direction.Type: ApplicationFiled: December 17, 2013Publication date: June 19, 2014Applicant: LG INNOTEK CO., LTD.Inventors: Woo Young CHANG, Seung Heon LEE, Chi Goo JUN
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Publication number: 20110105152Abstract: A mobile device and a server are provided. The mobile device displays relevant information extracted based on location information and additional information. Accordingly, by linking regional information acquired through a personal device with a location based service, the user is provided with useful contents effectively and further is provided with a new experience.Type: ApplicationFiled: August 24, 2010Publication date: May 5, 2011Applicant: Samsung Electronics Co., Ltd.Inventors: Seung-dong Yu, Woo-young Chang, Se-jun Park, Min-jeong Moon, Ju-yun Sung, Hee-jeong Choo, Sang-woong Hwang, Jee-sun Yoon, Ji-young Kwahk
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Patent number: RE48690Abstract: Provided is a light unit including a plurality of LED light sources formed on a PCB, a resin layer stacked on the PCB to diffuse and guide emitted light forwards, and a diffusion plate having an optical pattern printed thereon to shield light emitted from the LED light sources. The optical pattern is composed of a diffusion pattern implemented as at least one layer, or a combination of the diffusion pattern layer and a light shielding pattern. The light unit forms an optical pattern for shielding or diffusing light on a surface of a light diffusion plate of the back-light unit, and combines a diffusion pattern and a metal pattern to attain uniformity of light and realize a yellow-light shielding effect, thus leading to a reliable light quality.Type: GrantFiled: June 13, 2019Date of Patent: August 17, 2021Assignee: LG INNOTEK CO., LTD.Inventors: Kwang Ho Park, Woo Young Chang, Chul Hong Kim, Byoung Eon Lee