Patents by Inventor Sang-Hyun Ju
Sang-Hyun Ju 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: 11683972Abstract: The present disclosure discloses a method for manufacturing a light-emitting device using laser etching including: a first light-emitting layer forming step for depositing a first light-emitting layer on an surface of a hole transport layer deposited on an upper surface of an anode substrate; a first light-emitting device forming step for etching the first light-emitting layer to form a first light-emitting device; a second light-emitting layer depositing step for depositing a second light-emitting layer on a region including the upper surface of the hole transport layer; a second light-emitting device forming step for etching the second light-emitting layer to form a second light-emitting device; a third light-emitting layer depositing step for depositing a third light-emitting layer on a region including the upper surface of the hole transport layer; and a third light-emitting device forming step for etching the third light-emitting layer to form a third light-emitting device.Type: GrantFiled: January 28, 2021Date of Patent: June 20, 2023Assignee: Kyonggi University Industry & Academia Cooperation FoundationInventor: Sang Hyun Ju
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Publication number: 20210234138Abstract: The present disclosure discloses a method for manufacturing a light-emitting device using laser etching including: a first light-emitting layer forming step for depositing a first light-emitting layer on an surface of a hole transport layer deposited on an upper surface of an anode substrate; a first light-emitting device forming step for etching the first light-emitting layer to form a first light-emitting device; a second light-emitting layer depositing step for depositing a second light-emitting layer on a region including the upper surface of the hole transport layer; a second light-emitting device forming step for etching the second light-emitting layer to form a second light-emitting device; a third light-emitting layer depositing step for depositing a third light-emitting layer on a region including the upper surface of the hole transport layer; and a third light-emitting device forming step for etching the third light-emitting layer to form a third light-emitting device.Type: ApplicationFiled: January 28, 2021Publication date: July 29, 2021Inventor: Sang Hyun Ju
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Patent number: 11048116Abstract: Disclosed is an invisible display device driving a display by using wavelengths of a region invisible to humans, thereby being capable of containing pieces of information, which humans no need to see but is necessary for a special purpose including socio-economic activities, and pieces of security information, which normal people should not see, and the invisible display device has a plurality of pixels arranged therein so as to emit infrared rays, wherein each of the plurality of pixels comprising: a first infrared sub pixel for emitting a first infrared ray of a first wavelength range; a second infrared sub pixel for emitting a second infrared ray of a second wavelength range different from the first wavelength range; and a third infrared sub pixel for emitting a third infrared ray of a third wavelength range different from the first and second wavelength ranges.Type: GrantFiled: December 18, 2016Date of Patent: June 29, 2021Assignee: Kyonggi University Industry & Academia Cooperation FoundationInventor: Sang Hyun Ju
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Publication number: 20200271968Abstract: Disclosed is an invisible display device driving a display by using wavelengths of a region invisible to humans, thereby being capable of containing pieces of information, which humans no need to see but is necessary for a special purpose including socio-economic activities, and pieces of security information, which normal people should not see, and the invisible display device has a plurality of pixels arranged therein so as to emit infrared rays, wherein each of the plurality of pixels comprising: a first infrared sub pixel for emitting a first infrared ray of a first wavelength range; a second infrared sub pixel for emitting a second infrared ray of a second wavelength range different from the first wavelength range; and a third infrared sub pixel for emitting a third infrared ray of a third wavelength range different from the first and second wavelength ranges.Type: ApplicationFiled: December 18, 2016Publication date: August 27, 2020Inventor: Sang Hyun Ju
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Patent number: 8533858Abstract: Provided are domain contexts indicating user and device based domain systems for being applied to a new digital content protection/management system, and management methods thereof. A concept of “domain” is introduced in the present invention so that various business models can be obtained in accordance with content use of one home or small-sized group. The domain refers to as a group of user and device SAV and PAV indicating a context for being applied to the domain system includes: a domain identifier for specifying a domain as a region containing at least one content execution device and at least one content user; domain authentication information for guaranteeing authenticity of the domain; a user list containing information of users belonging to the domain; and a device list containing devices belonging to the domain.Type: GrantFiled: April 7, 2006Date of Patent: September 10, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Young Bae Byun, Bum Suk Choi, Hyon-Gon Choo, Sang Hyun Ju, Je Ho Nam, Jin Woo Hong
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Publication number: 20120326119Abstract: The invention is a light emitting display device having a nanowire that emits light when an electric current is applied. The disclosed light emitting display device comprises: a nanowire light emitting element electrically connected to a first power line; a driving transistor electrically connected between the light emitting element and a second power line; a capacitor electrically connected between the driving transistor, the second power line, and a data line; and a switching transistor electrically connected between the driving transistor, the data line, and a scanning line. The invention discloses a light emitting display device comprising: a nanowire light emitting transistor electrically connected between a first power line and a second power line; a capacitor electrically connected between the nanowire light emitting transistor, second power line, and a data line; and a switching transistor electrically connected between the nanowire light emitting transistor, data line, capacitor, and a scanning line.Type: ApplicationFiled: March 2, 2011Publication date: December 27, 2012Applicant: Kyonggi University Industry & Academia Cooperation FoundationInventors: Sang Hyun Ju, Mi Sook Suh
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Patent number: 8314544Abstract: The present invention relates to an inorganic light-emitting device, and more particularly, to an inorganic light emitting device having superior mechanical strength and a long lifespan, and which is capable of maintaining uniform and high efficiency of light emission, and has transparent and flexible characteristics. The inorganic light emitting device of the present invention includes a first electrode, a fluorescent layer formed on the first electrode, and which includes a plurality of nanowires made of inorganic light-emitting materials, and a second electrode formed on the fluorescent layer. The fluorescent layer is coated with the plurality of nanowires.Type: GrantFiled: September 1, 2009Date of Patent: November 20, 2012Assignee: Kyonggi University Industry & Academia Cooperation FoundationInventor: Sang Hyun Ju
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Patent number: 8261356Abstract: A tool pack structure includes: a signature value for guaranteeing authenticity of a tool pack; a tool pack identifier for identifying the tool pack; each unit tool pack provided according to a hardware platform; and tool pack data containing initial values assigned when each unit tool pack is used. Each tool pack includes platform information indicating information about hardware in which the tool pack may be used; a tool agent that is a program activated for content execution; and a tool group including at least one tool program activated by the tool pack agent for processing content according to a predetermined rule. A tool agent leaves operation of a protection tool group used by a specific service provider entirely to a tool agent (execution code) provided together with the tool group by service providers. Accordingly, information about the used tools does not have to be disclosed to the public. Since a user terminal simply calls each tool agent, it can support interoperability with other DRM techniques.Type: GrantFiled: April 3, 2006Date of Patent: September 4, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Bum Suk Choi, Young Bae Byun, Hyon-Gon Choo, Sang Hyun Ju, Je Ho Nam, Jin Woo Hong
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Publication number: 20110148286Abstract: The present invention relates to an inorganic light-emitting device, and more particularly, to an inorganic light emitting device having superior mechanical strength and a long lifespan, and which is capable of maintaining uniform and high efficiency of light emission, and has transparent and flexible characteristics. The inorganic light emitting device of the present invention includes a first electrode, a fluorescent layer formed on the first electrode, and which includes a plurality of nanowires made of inorganic light-emitting materials, and a second electrode formed on the fluorescent layer. The fluorescent layer is coated with the plurality of nanowires.Type: ApplicationFiled: September 1, 2009Publication date: June 23, 2011Applicant: Kyonggi University Industry & Academia Cooperation FoundationInventor: Sang Hyun Ju
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Publication number: 20100006831Abstract: The present invention is directed to a full color organic electroluminescent device which comprises a substrate; a first electrode formed on the substrate; an organic emitting layer formed on the first electrode, and having a red-emitting layer, a green-emitting layer and a blue-emitting layer, respectively patterned in a red pixel region, a green pixel region and a blue pixel region, and having the red and green-emitting layer consisting of a phosphorescent material and the blue-emitting layer consisting of a fluorescent material; a hole blocking layer formed on the organic emitting layer as a common layer; and a second electrode formed on the hole blocking layer, so that the full color organic electroluminescent device having enhanced lifetime and luminous efficiency characteristics can be provided.Type: ApplicationFiled: September 14, 2009Publication date: January 14, 2010Inventors: Sang-Hyun Ju, Mu-Hyun Kim, Jang-Hyuk Kwon, Sung-Chul Kim, Ho-Kyoon Chung, Byung-Doo Chin, Seong-Taek Lee
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Publication number: 20090235330Abstract: Provided are domain contexts indicating user and device based domain systems for being applied to a new digital content protection/management system, and management methods thereof. A concept of “domain” is introduced in the present invention so that various business models can be obtained in accordance with content use of one home or small-sized group. The domain refers to as a group of user and device SAV and PAV indicating a context for being applied to the domain system includes: a domain identifier for specifying a domain as a region containing at least one content execution device and at least one content user; domain authentication information for guaranteeing authenticity of the domain; a user list containing information of users belonging to the domain; and a device list containing devices belonging to the domain.Type: ApplicationFiled: April 7, 2006Publication date: September 17, 2009Inventors: Young Bae Byun, Bum Suk Choi, Hyon-Gon Choo, Sang Hyun Ju, Je Ho Nam, Jin Woo Hong
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Publication number: 20080201781Abstract: A tool pack structure includes: a signature value for guaranteeing authenticity of a tool pack; a tool pack identifier for identifying the tool pack; each unit tool pack provided according to a hardware platform; and tool pack data containing initial values assigned when each unit tool pack is used. Each tool pack includes platform information indicating information about hardware in which the tool pack may be used; a tool agent that is a program activated for content execution; and a tool group including at least one tool program activated by the tool pack agent for processing content according to a predetermined rule. A tool agent leaves operation of a protection tool group used by a specific service provider entirely to a tool agent (execution code) provided together with the tool group by service providers. Accordingly, information about the used tools does not have to be disclosed to the public. Since a user terminal simply calls each tool agent, it can support interoperability with other DRM techniques.Type: ApplicationFiled: April 3, 2006Publication date: August 21, 2008Inventors: Bum Suk Choi, Young Bae Byun, Hyon-Gon Choo, Sang Hyun Ju, Je Ho Nam, Jin Woo Hong
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Publication number: 20080195548Abstract: A license data structure and distribution (issuance) method are provided, that can accommodate one domain including multiple content playback devices and/or users. A method for creating license data in the invention includes the steps of: creating raw license data to be issued; firstly encrypting the raw license data with an encryption key of a user and/or device; and encrypting the data encrypted with the user and/or device public key using a public key of a home domain. Also, a license data structure of the invention includes an encrypted license block created by firstly encrypting raw license data containing data for playing content with a distributed encryption key of a user and/or device, and then secondly encrypting this with a distributed encryption key of a home domain; and TAG information necessary for decryption of a second encryption capsule.Type: ApplicationFiled: April 11, 2006Publication date: August 14, 2008Inventors: Hyun Gon Chu, Young Bae Byun, Bum Suk Choi, Sang Hyun Ju, Je Ho Nam, Jin Woo Hong
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Patent number: 7166370Abstract: An organic electroluminescence device is described and includes a transparent substrate with a first electrode formed on the top surface of the transparent substrate in a predetermined pattern. The first electrode is transparent. An organic layer includes a hole injecting layer, a hole transporting layer, an emitting layer, and an electron transporting layer. They are sequentially stacked on the top surface of the first electrode. A second electrode is formed on the top surface of the organic layer in a predetermined pattern. The distance from the top surface of the hole transporting layer to the bottom surface of the second electrode ranges from about 350 ? to about 450 ? such that the color purity and brightness of blue light is optimized. Accordingly, the organic electroluminescence device increases the color purity and brightness of blue light, thereby providing an image having excellent picture quality.Type: GrantFiled: May 9, 2005Date of Patent: January 23, 2007Assignee: Samsung SDI Co., Ltd.Inventors: Su-Bin Song, Jun-Sik Oh, Han-Ju Lee, Sang-Hyun Ju
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Patent number: 6991858Abstract: The present invention relates to a blue light-emitting compound for organic polymer EL devices and organic EL devices having superior color purity and light-emitting efficiency by providing a blue light-emitting compound for organic EL devices represented by Chemical Formula 1 and an organic EL device using the blue light-emitting compound: wherein R1 to R8 each independently represents a functional group selected from the group consisting of hydrogen alkyl groups, alkoxy groups, carbon rings, aryl groups, hetero rings and fused aromatic compounds having from 1 to 30 carbon atoms; to of R1 to R3 may additionally be connected by a ring; and two of R4 to R8 may additionally be connected by a ring.Type: GrantFiled: February 4, 2003Date of Patent: January 31, 2006Assignee: Samsung SDI Co., Ltd.Inventors: Kwan Hee Lee, Soo Jin Park, Jong In Hong, Kyung Sun Choi, Chan Hyo Lee, Dae Yup Shin, Dong Hyun Jung, Sang Hyun Ju, Jang Hyuk Kwon
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Publication number: 20050202280Abstract: An organic electroluminescence device is described and includes a transparent substrate with a first electrode formed on the top surface of the transparent substrate in a predetermined pattern. The first electrode is transparent. An organic layer includes a hole injecting layer, a hole transporting layer, an emitting layer, and an electron transporting layer. They are sequentially stacked on the top surface of the first electrode. A second electrode is formed on the top surface of the organic layer in a predetermined pattern. The distance from the top surface of the hole transporting layer to the bottom surface of the second electrode ranges from about 350 ? to about 450 ? such that the color purity and brightness of blue light is optimized. Accordingly, the organic electroluminescence device increases the color purity and brightness of blue light, thereby providing an image having excellent picture quality.Type: ApplicationFiled: May 9, 2005Publication date: September 15, 2005Inventors: Su-Bin Song, Jun-Sik Oh, Han-Ju Lee, Sang-Hyun Ju
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Patent number: 6908697Abstract: An organic electroluminescence device is described and includes a transparent substrate with a first electrode formed on the top surface of the transparent substrate in a predetermined pattern. The first electrode is transparent. An organic layer includes a hole injecting layer, a hole transporting layer, an emitting layer, and an electron transporting layer. They are sequentially stacked on the top surface of the first electrode. A second electrode is formed on the top surface of the organic layer in a predetermined pattern. The distance from the top surface of the hole transporting layer to the bottom surface of the second electrode ranges from about 350 ? to about 450 ? such that the color purity and brightness of blue light is optimized. Accordingly, the organic electroluminescence device increases the color purity and brightness of blue light, thereby providing an image having excellent picture quality.Type: GrantFiled: March 13, 2003Date of Patent: June 21, 2005Assignee: Samsung SDI Co., Ltd.Inventors: Su-Bin Song, Jun-Sik Oh, Han-Ju Lee, Sang-Hyun Ju
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Publication number: 20050112403Abstract: The present invention is directed to a full color organic electroluminescent device which comprises a substrate; a first electrode formed on the substrate; an organic emitting layer formed on the first electrode, and having a red-emitting layer, a green-emitting layer and a blue-emitting layer, respectively patterned in a red pixel region, a green pixel region and a blue pixel region, and having the red and green-emitting layer consisting of a phosphorescent material and the blue-emitting layer consisting of a fluorescent material; a hole blocking layer formed on the organic emitting layer as a common layer; and a second electrode formed on the hole blocking layer, so that the full color organic electroluminescent device having enhanced lifetime and luminous efficiency characteristics can be provided.Type: ApplicationFiled: September 9, 2004Publication date: May 26, 2005Inventors: Sang-Hyun Ju, Mu-Hyun Kim, Jang-Hyuk Kwon, Sung-Chul Kim, Ho-Kyoon Chung, Byung-Doo Chin, Seong-Taek Lee
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Publication number: 20040001971Abstract: The present invention relates to a blue light-emitting compound for organic polymer EL devices and organic EL devices having superior color purity and light-emitting efficiency by providing a blue light-emitting compound for organic EL devices represented by Chemical Formula 1 and an organic EL device using the blue light-emitting compound: 1Type: ApplicationFiled: February 4, 2003Publication date: January 1, 2004Inventors: Kwan Hee Lee, Soo Jin Park, Jong In Hong, Kyung Sun Choi, Chan Hyo Lee, Dae Yup Shin, Dong Hyun Jung, Sang Hyun Ju, Jang Hyuk Kwon
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Publication number: 20030224207Abstract: An organic electroluminescence device is described and includes a transparent substrate with a first electrode formed on the top surface of the transparent substrate in a predetermined pattern. The first electrode is transparent. An organic layer includes a hole injecting layer, a hole transporting layer, an emitting layer, and an electron transporting layer. They are sequentially stacked on the top surface of the first electrode. A second electrode is formed on the top surface of the organic layer in a predetermined pattern. The distance from the top surface of the hole transporting layer to the bottom surface of the second electrode ranges from about 350 Å to about 450 Å such that the color purity and brightness of blue light is optimized. Accordingly, the organic electroluminescence device increases the color purity and brightness of blue light, thereby providing an image having excellent picture quality.Type: ApplicationFiled: March 13, 2003Publication date: December 4, 2003Applicant: Samsung SDI Co., Ltd.Inventors: Su-Bin Song, Jun-Sik Oh, Han-Ju Lee, Sang-Hyun Ju