Patents by Inventor Hae-Soo Ha
Hae-Soo Ha 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: 9130125Abstract: A semiconductor light emitting device may include an n-type semiconductor layer, an active layer and a p-type semiconductor layer disposed in a first region corresponding to a portion of an upper surface of the n-type semiconductor layer, an n-type electrode formed in a second region distinct from the first region on the n-type semiconductor layer to be electrically connected to the n-type semiconductor layer and including an n-type electrode pad and first and second n-type electrode fingers, and a p-type electrode formed on the p-type semiconductor layer to be electrically connected to the p-type semiconductor layer and including a p-type electrode pad and a p-type electrode finger. A distance between n-type and p-type electrodes may be constant to significantly reduce a phenomenon of concentration of a current in a specific region of an electrode.Type: GrantFiled: August 17, 2011Date of Patent: September 8, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Seok Min Hwang, Hae Soo Ha, Jae Yoon Kim, Jae Ho Han
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Patent number: 8969901Abstract: A light emitting device includes a first semiconductor layer, an active layer, and a second semiconductor layer, and first and second electrodes electrically connected to the first and second semiconductor layers, respectively. The second electrode includes a reflective pad portion, a transparent electrode layer, a reflective finger portion and an electrode pad portion. The reflective pad portion is disposed in a region of an upper surface of the second semiconductor layer. The transparent electrode layer is disposed on the second semiconductor layer and has an opening encompassing the reflective pad portion such that the transparent electrode layer is not in contact with the reflective pad portion. The reflective finger portion extends from the reflective pad portion and has at least a portion thereof disposed on the transparent electrode layer. The electrode pad portion covers the reflective pad portion to be in contact with the transparent electrode layer.Type: GrantFiled: May 16, 2013Date of Patent: March 3, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Jin Young Choi, Jae Ho Han, Ki Seok Kim, Wan Ho Lee, Myeong Ha Kim, Hae Soo Ha
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Patent number: 8829540Abstract: A semiconductor light emitting device includes a substrate, a plurality of light emitting cells, a connection part, and a concavo-convex part. The light emitting cells are arrayed on the top surface of the substrate. Each of the light emitting cells has a first-conductivity-type semiconductor layer, an active layer, and a second-conductivity-type semiconductor layer that are sequentially stacked on the top surface of the substrate. The connection part is formed to connect the light emitting cells in series, parallel or series-parallel. The concavo-convex part is formed in at least one of the bottom surface of the substrate and the top surface of an isolation region between the light emitting cells.Type: GrantFiled: February 17, 2011Date of Patent: September 9, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Sung Tae Kim, Tae Hun Kim, Jae Yoon Kim, Hae Soo Ha
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Publication number: 20140191194Abstract: There is provided a nitride semiconductor light emitting device, capable of improving light extraction efficiency through a texture effect and including: a light emitting structure formed on a substrate and including a first conductivity-type nitride semiconductor layer and a second conductivity-type nitride semiconductor layer with an active layer interposed therebetween; a first electrode electrically connected to the first conductivity-type nitride semiconductor layer; a second electrode electrically connected to the second conductivity-type nitride semiconductor layer; and a light extraction pattern disposed between the first electrode and the second electrode and including a plurality of through holes formed by vertically penetrating the light emitting structure.Type: ApplicationFiled: August 9, 2011Publication date: July 10, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seok Min Hwang, Jae Ho Han, Jae Yoon Kim, Hae Soo Ha, Su Yeol Lee, Je Won Kim
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Publication number: 20140175503Abstract: A semiconductor light emitting device may include an n-type semiconductor layer, an active layer and a p-type semiconductor layer disposed in a first region corresponding to a portion of an upper surface of the n-type semiconductor layer, an n-type electrode formed in a second region distinct from the first region on the n-type semiconductor layer to be electrically connected to the n-type semiconductor layer and including an n-type electrode pad and first and second n-type electrode fingers, and a p-type electrode formed on the p-type semiconductor layer to be electrically connected to the p-type semiconductor layer and including a p-type electrode pad and a p-type electrode finger. A distance between n-type and p-type electrodes may be constant to significantly reduce a phenomenon of concentration of a current in a specific region of an electrode.Type: ApplicationFiled: August 17, 2011Publication date: June 26, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seok Min Hwang, Hae Soo Ha, Jae Yoon Kim, Jae Ho Han
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Publication number: 20140131759Abstract: A semiconductor light emitting device includes an n-type semiconductor layer, an active layer and a p-type semiconductor layer formed in a first region corresponding to a partial region of an upper surface of the n-type semiconductor layer, an n-type electrode formed in a second region different from the first region on the upper surface of the n-type semiconductor layer, and having an n-type pad and first and second n-type fingers, and a p-type electrode formed on the p-type semiconductor layer, and having a p-type pad and a p-type finger, wherein the n-type semiconductor layer, the active layer, and the p-type semiconductor layer form a light emitting structure, and a region in which the n-type and p-type fingers intersect to overlap with each other is formed.Type: ApplicationFiled: July 29, 2011Publication date: May 15, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jae Yoon Kim, Je Won Kim, Jin Bock Lee, Seok Min Hwang, Hae Soo Ha, Su Yeol Lee
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Publication number: 20130307007Abstract: A light emitting device includes a first semiconductor layer, an active layer, and a second semiconductor layer, and first and second electrodes electrically connected to the first and second semiconductor layers, respectively. The second electrode includes a reflective pad portion, a transparent electrode layer, a reflective finger portion and an electrode pad portion. The reflective pad portion is disposed in a region of an upper surface of the second semiconductor layer. The transparent electrode layer is disposed on the second semiconductor layer and has an opening encompassing the reflective pad portion such that the transparent electrode layer is not in contact with the reflective pad portion. The reflective finger portion extends from the reflective pad portion and has at least a portion thereof disposed on the transparent electrode layer. The electrode pad portion covers the reflective pad portion to be in contact with the transparent electrode layer.Type: ApplicationFiled: May 16, 2013Publication date: November 21, 2013Applicant: Samsung Electronics Co., Ltd.Inventors: Jin Young CHOI, Jae Ho HAN, Ki Seok KIM, Wan Ho LEE, Myeong Ha KIM, Hae Soo HA
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Publication number: 20130020599Abstract: A semiconductor light emitting device is provided. The semiconductor light emitting device includes a light emitting structure including a first conductivity-type semiconductor layer, an active layer, and a second conductivity-type semiconductor layer. A first electrode is electrically connected to the first conductivity-type semiconductor layer. A light-transmissive conductive layer is disposed on the second conductivity-type semiconductor layer. A second electrode includes a reflective metal layer and an insulating layer.Type: ApplicationFiled: July 20, 2012Publication date: January 24, 2013Inventors: Jae Ho HAN, Je Won KIM, Hae Soo HA
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Publication number: 20110204387Abstract: A semiconductor light emitting device includes a substrate, a plurality of light emitting cells, a connection part, and a concavo-convex part. The light emitting cells are arrayed on the top surface of the substrate. Each of the light emitting cells has a first-conductivity-type semiconductor layer, an active layer, and a second-conductivity-type semiconductor layer that are sequentially stacked on the top surface of the substrate. The connection part is formed to connect the light emitting cells in series, parallel or series-parallel. The concavo-convex part is formed in at least one of the bottom surface of the substrate and the top surface of an isolation region between the light emitting cells.Type: ApplicationFiled: February 17, 2011Publication date: August 25, 2011Inventors: Sung Tae KIM, Tae Hun Kim, Jae Yoon Kim, Hae Soo Ha
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Patent number: 7397176Abstract: A surface light source device includes a light source body, first and second electrodes, a light reflecting layer, and a fluorescent layer. The light source body is configured to generate light. The first and second electrodes are each disposed adjacent to a corresponding opposite end portion of the light source body. The first and second electrodes receive a discharge voltage that creates a potential difference across the light source body. The light reflecting layer is disposed at an internal surface of the light source body. The light reflecting layer includes light diffusing particles having at least two sizes. The fluorescent layer is disposed at selected regions of the light source body. Therefore, the light reflecting layer is not deformed by heat and enhances reflectivity without changing a color coordinates.Type: GrantFiled: March 17, 2005Date of Patent: July 8, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Joong-Hyun Kim, Hae-Soo Ha, Sang-Yu Lee, Seog-Hyun Cho
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Patent number: 7271531Abstract: A surface light source device includes a light source body, a partition member, an isolating member and a voltage applying part. The light source body has an internal space into which discharge gas is injected. The partition wall divides the internal space into discharge spaces. The partition wall has a connection hole that connects the discharge spaces with each other. The isolating member is disposed such that the isolating member corresponds to the connection hole. The isolating member seals the connection hole to isolate the discharge spaces from each other. The voltage applying part induces discharge of the discharge gas in the discharge spaces. Thus, current drift is prevented.Type: GrantFiled: November 19, 2004Date of Patent: September 18, 2007Assignee: Samsung Corning Co., Ltd.Inventors: Seok-Hyun Cho, Ki-Yeon Lee, Jae-Hyeon Ko, Dong-Woo Kim, Hae-Soo Ha
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Publication number: 20070210716Abstract: There is provided a surface light source device containing 50 ppm or less of water, 50 ppm or less of nitrogen, 30 ppm or less of oxygen, 20 ppm or less of carbon monoxide, and 20 ppm or less of carbon dioxide as impurities in its discharge space. Accordingly, the surface light source device with the impurity standards has improved brightness.Type: ApplicationFiled: March 6, 2007Publication date: September 13, 2007Inventors: Kyeong Taek Jung, Hyung Bin Youn, Hae Soo Ha
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Publication number: 20060078735Abstract: A method for treating surface of the phosphor particles, which comprises the steps of dispersing the phosphor particles in a solvent, separately dissolving a precursor of a surface-protecting material in a solvent, and combining the resulting dispersion and solution provides phosphor particles having an evenly coated layer of the surface-protecting material.Type: ApplicationFiled: October 12, 2005Publication date: April 13, 2006Inventors: Seog Hyun Cho, Jooho Moon, Dongjo Kim, Sunho Jeong, Kyeong Taek Jung, Hae Soo Ha
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Publication number: 20050269931Abstract: A flat fluorescent lamp includes a body and a fluorescent layer. The body generates invisible radiation. The fluorescent layer has a luminance-enhancing pattern formed thereon. The fluorescent layer converts the invisible radiation into visible light. Therefore, a surface area of the fluorescent layer is increased to increase an amount of visible light, so that luminance of a display device employing the flat fluorescent lamp is enhanced.Type: ApplicationFiled: June 1, 2005Publication date: December 8, 2005Inventors: Joong-Hyun Kim, Hae-Soo Ha, Sang-Yu Lee, In-Sun Hwang
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Publication number: 20050207139Abstract: A surface light source device includes a light source body, first and second electrodes, a light reflecting layer, and a fluorescent layer. The light source body is configured to generate light. The first and second electrodes are each disposed adjacent to a corresponding opposite end portion of the light source body. The first and second electrodes receive a discharge voltage that creates a potential difference across the light source body. The light reflecting layer is disposed at an internal surface of the light source body. The light reflecting layer includes light diffusing particles having at least two sizes. The fluorescent layer is disposed at selected regions of the light source body. Therefore, the light reflecting layer is not deformed by heat and enhances reflectivity without changing a color coordinates.Type: ApplicationFiled: March 17, 2005Publication date: September 22, 2005Inventors: Joong-Hyun Kim, Hae-Soo Ha, Sang-Yu Lee, Seog-Hyun Cho
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Publication number: 20050110414Abstract: A surface light source device includes a light source body, a partition member, an isolating member and a voltage applying part. The light source body has an internal space into which discharge gas is injected. The partition wall divides the internal space into discharge spaces. The partition wall has a connection hole that connects the discharge spaces with each other. The isolating member is disposed such that the isolating member corresponds to the connection hole. The isolating member seals the connection hole to isolate the discharge spaces from each other. The voltage applying part induces discharge of the discharge gas in the discharge spaces. Thus, current drift is prevented.Type: ApplicationFiled: November 19, 2004Publication date: May 26, 2005Inventors: Seok-Hyun Cho, Ki-Yeon Lee, Jae-Hyeon Ko, Dong-Woo Kim, Hae-Soo Ha
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Publication number: 20050012875Abstract: In a method of manufacturing a surface light source, a plurality of partition walls is formed on a lower substrate. The partition walls generate a first stress in the lower substrate along a first direction. A reflective layer is formed on the lower substrate. The reflective layer generates a second stress in the lower substrate along a second direction. After forming a fluorescent layer on the reflective layer and beneath an upper substrate, the upper and lower substrates are sealed to form discharge spaces between the upper and lower substrates.Type: ApplicationFiled: July 13, 2004Publication date: January 20, 2005Inventors: Joong-Hyun Kim, Ki-Yeon Lee, Sang-Yu Lee, Nam-Hun Kim, Hae-Soo Ha