Patents by Inventor Ki Seok Jang
Ki Seok Jang 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).
-
Publication number: 20150079387Abstract: Provided are an optical member, a pressure-sensitive adhesive composition, and an LCD. The optical member may have excellent endurance reliability even when a pressure-sensitive adhesive layer is formed to have a thickness of 20 ?m or less.Type: ApplicationFiled: November 20, 2014Publication date: March 19, 2015Inventors: Se Woo YANG, Ki Seok JANG, Yong Su PARK, Min Soo PARK, Suk Ky CHANG, Jong Rok JEON
-
Patent number: 8948224Abstract: The inventive concept provides semiconductor laser devices and methods of fabricating the same. According to the method, a silicon-crystalline germanium layer for emitting a laser may be formed in a selected region by a selective epitaxial growth (SEG) method. Thus, surface roughness of both ends of a Fabry Perot cavity formed of the silicon-crystalline germanium layer may be reduced or minimized, and a cutting process and a polishing process may be omitted in the method of fabricating the semiconductor laser device.Type: GrantFiled: July 10, 2012Date of Patent: February 3, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: In Gyoo Kim, Gyungock Kim, Sang Hoon Kim, JiHo Joo, Ki Seok Jang
-
Patent number: 8936951Abstract: Provided are a semiconductor laser and a method of manufacturing the same. The method includes: providing a substrate including a buried oxide layer; forming patterns, which includes an opening part to expose the substrate, by etching the buried oxide layer; forming a germanium single crystal layer in the opening part; and forming an optical coupler, which is adjacent to the germanium single crystal layer, on the substrate.Type: GrantFiled: February 25, 2013Date of Patent: January 20, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: In Gyoo Kim, Gyungock Kim, Sang Hoon Kim, Ki Seok Jang, JiHo Joo
-
Patent number: 8928107Abstract: Provided are light detection devices and methods of manufacturing the same. The light detection device includes a first conductive pattern on a surface of a substrate, an insulating pattern on the substrate and having an opening exposing at least a portion of the first conductive pattern, a light absorbing layer filling the opening of the insulating pattern and having a top surface disposed at a level substantially higher than a top surface of the insulating pattern, a second conductive pattern on the light absorbing layer, and connecting terminals electrically connected to the first and second conductive patterns, respectively.Type: GrantFiled: October 28, 2011Date of Patent: January 6, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Sang Hoon Kim, Gyungock Kim, In Gyoo Kim, JiHo Joo, Ki Seok Jang
-
Publication number: 20140346532Abstract: Disclosed are an optical input/output device and an opto-electronic system including the same. The device includes a bulk silicon substrate, at least one vertical-input light detection element monolithically integrated on a portion of the bulk silicon substrate, and at least one vertical-output light source element monolithically integrated on another portion of the bulk silicon substrate adjacent to the vertical-input light detection element. The vertical-output light source element includes a III-V compound semiconductor light source active layer combined with the bulk silicon substrate by a wafer bonding method.Type: ApplicationFiled: October 24, 2013Publication date: November 27, 2014Applicant: Electronics and Telecommunications Research InstituteInventors: Gyungock KIM, Hyundai PARK, In Gyoo KIM, Sang Hoon KIM, Ki Seok JANG, Sang Gi KIM, Jiho JOO, Yongseok CHOI, Hyuk Je KWON, Jaegyu PARK, Sun Ae KIM, Jin Hyuk OH, Myung Joon KWACK
-
Patent number: 8859319Abstract: Methods of forming photo detectors are provided. The method includes providing a semiconductor layer on a substrate, forming a trench in the semiconductor layer, forming a first single crystalline layer and a second single crystalline layer using a selective single crystalline growth process in the trench, and patterning the first and second single crystalline layers and the semiconductor layer to form a first single crystalline pattern, a second single crystalline pattern and an optical waveguide.Type: GrantFiled: September 12, 2012Date of Patent: October 14, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Sang Hoon Kim, Gyungock Kim, In Gyoo Kim, JiHo Joo, Ki Seok Jang
-
Publication number: 20140105235Abstract: Provided are a semiconductor laser and a method of manufacturing the same. The method includes: providing a substrate including a buried oxide layer; forming patterns, which includes an opening part to expose the substrate, by etching the buried oxide layer; forming a germanium single crystal layer in the opening part; and forming an optical coupler, which is adjacent to the germanium single crystal layer, on the substrate.Type: ApplicationFiled: February 25, 2013Publication date: April 17, 2014Applicant: Electronics and Telecommunications Research InstituteInventors: In Gyoo KIM, Gyungock KIM, Sang Hoon KIM, Ki Seok JANG, JiHo JOO
-
Publication number: 20140065324Abstract: The present invention relates to a pressure sensitive adhesive composition, a polarizer and a liquid crystal display device. The present invention may provide a pressure sensitive adhesive which can have excellent stress relaxation characteristic to effectively inhibit light leakage by dimension change of optical films such as polarizing plates. In addition, a pressure sensitive adhesive having excellent physical properties such as adhesion durability and workability may be provided.Type: ApplicationFiled: November 6, 2013Publication date: March 6, 2014Applicant: LG CHEM, LTD.Inventors: Ki Seok JANG, Suk Ky CHANG, Min Soo PARK, Se Woo YANG
-
Publication number: 20140048772Abstract: Provided is a silicon-wafer-based germanium semiconductor photodetector configured to be able to provide properties of high gain, high sensitivity, and high speed, at a relatively low voltage. A germanium-based carrier multiplication layer (e.g., a single germanium layer or a germanium and silicon superlattice layer) may be provided on a silicon wafer, and a germanium charge layer may be provided thereon, a germanium absorption layer may be provided on the charge layer, and a polysilicon second contact layer may be provided on the absorption layer. The absorption layer may be configured to include germanium quantum dots or wires.Type: ApplicationFiled: July 23, 2013Publication date: February 20, 2014Applicant: Electronics and Telecommunications Research InstituteInventors: Gyungock KIM, Sang Hoon KIM, Ki Seok JANG, In Gyoo KIM, Jin Hyuk OH, Sun Ae KIM
-
Patent number: 8548281Abstract: Provided is an electro-optic modulating device. The electro-optic modulating device includes an optical waveguide with a vertical structure and sidewalls of the vertical structure are used to configure a junction.Type: GrantFiled: August 31, 2010Date of Patent: October 1, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Gyungock Kim, Jeong Woo Park, Jongbum You, Sang Gi Kim, Sanghoon Kim, In Gyoo Kim, Jiho Joo, Duk Jun Kim, Dongwoo Suh, Sahnggi Park, Ki Seok Jang, Junghyung Pyo, Kap-Joong Kim, Do Won Kim, Dae Seo Park
-
Publication number: 20130156057Abstract: The inventive concept provides semiconductor laser devices and methods of fabricating the same. According to the method, a silicon-crystalline germanium layer for emitting a laser may be formed in a selected region by a selective epitaxial growth (SEG) method. Thus, surface roughness of both ends of a Fabry Perot cavity formed of the silicon-crystalline germanium layer may be reduced or minimized, and a cutting process and a polishing process may be omitted in the method of fabricating the semiconductor laser device.Type: ApplicationFiled: July 10, 2012Publication date: June 20, 2013Applicant: Electronics and Telecommunications Research InstituteInventors: In Gyoo KIM, Gyungock KIM, Sang Hoon KIM, JiHo JOO, Ki Seok JANG
-
Publication number: 20130149806Abstract: Methods of forming photo detectors are provided. The method includes providing a semiconductor layer on a substrate, forming a trench in the semiconductor layer, forming a first single crystalline layer and a second single crystalline layer using a selective single crystalline growth process in the trench, and patterning the first and second single crystalline layers and the semiconductor layer to form a first single crystalline pattern, a second single crystalline pattern and an optical waveguide.Type: ApplicationFiled: September 12, 2012Publication date: June 13, 2013Applicant: Electronics and Telecommunications Research InstituteInventors: Sang Hoon KIM, Gyungock KIM, In Gyoo KIM, JiHo JOO, Ki Seok JANG
-
Publication number: 20120274881Abstract: The present invention relates to a pressure sensitive adhesive composition, a polarizer and a liquid crystal display device. The present invention may provide a pressure sensitive adhesive which can have excellent stress relaxation characteristic to effectively inhibit light leakage by dimension change of optical films such as polarizing plates. In addition, a pressure sensitive adhesive having excellent physical properties such as adhesion durability and workability may be provided.Type: ApplicationFiled: November 26, 2009Publication date: November 1, 2012Inventors: Ki Seok Jang, Suk Ky Chang, Min Soo Park, Se Woo Yang
-
Publication number: 20120126357Abstract: Provided are light detection devices and methods of manufacturing the same. The light detection device includes a first conductive pattern on a surface of a substrate, an insulating pattern on the substrate and having an opening exposing at least a portion of the first conductive pattern, a light absorbing layer filling the opening of the insulating pattern and having a top surface disposed at a level substantially higher than a top surface of the insulating pattern, a second conductive pattern on the light absorbing layer, and connecting terminals electrically connected to the first and second conductive patterns, respectively.Type: ApplicationFiled: October 28, 2011Publication date: May 24, 2012Applicant: Electronics and Telecommunications Research InstituteInventors: Sang Hoon KIM, Gyungock Kim, In Gyoo Kim, JiHo Joo, Ki Seok Jang
-
Patent number: 7999991Abstract: Disclosed is a method of preparing an electrode, which can lead to uniform electrochromism of a lithium nickel oxide layer by applying a voltage in all directions of the electrode during a formatting process, an electrode prepared by the same, and an electrochromic device including the electrode.Type: GrantFiled: January 22, 2008Date of Patent: August 16, 2011Assignee: LG Chem, Ltd.Inventors: Ki-Seok Jang, Hyun-Woo Shin, Jae-Hong Kim
-
Publication number: 20110133187Abstract: Provided is a manufacturing method of a photo detector. The method includes: forming a first single crystal semiconductor layer and an optical waveguide protruding from the first single crystal semiconductor layer; forming an insulation layer on the first single crystal semiconductor layer to cover the optical waveguide; forming an opening by etching the insulation layer to expose the top surface of the optical waveguide; forming a second single crystal semiconductor layer from the top surface of the exposed optical waveguide, in the opening; and selectively forming a poly semiconductor layer from the top surface of the second single crystal semiconductor layer, the poly semiconductor layer being doped with dopants.Type: ApplicationFiled: April 22, 2010Publication date: June 9, 2011Applicant: Electronics and Telecommunications Research InstituteInventors: Sang Hoon KIM, Gyungock Kim, In Gyoo Kim, Dongwoo Suh, Jiho Joo, Ki Seok Jang
-
Publication number: 20110122343Abstract: Provided are a pressure-sensitive adhesive (PSA) composition including an interpenetrating polymer network structure in a cured state, and including an acrylic resin and a crosslinking agent component that consists of a bifunctional crosslinking agent, a polarizer and a liquid crystal display. Provided are the PSA composition, the polarizer including a cured product of the PSA composition, and the liquid crystal display, which have excellent workability and optical properties, durability and reliability, at high temperature or humidity condition, and significantly increase productivity of optical members such as a polarizer, since the time-dependent change of the pressure-sensitive adhesive strength is rapidly ended after fabrication.Type: ApplicationFiled: July 16, 2009Publication date: May 26, 2011Inventors: Min Soo Park, In Cheon Han, Ki Seok Jang
-
Publication number: 20110117296Abstract: The present invention relates to a pressure-sensitive adhesive composition, including an interpenetrating polymer network structure in a cured state and comprising a pressure-sensitive adhesive strength stabilizer; a polarizer; and a liquid crystal display. In the present invention, by using the stabilizer having a functional group capable of rapidly reacting with a multifunctional crosslinking agent, the change of the pressure-sensitive adhesive strength over time is quickly terminated right after preparation, thereby the pressure-sensitive adhesive strength is rapidly stabilized. The pressure-sensitive adhesive of the present invention has an excellent removability in a room-temperature or warming condition. Also, the pressure-sensitive adhesive can efficiently suppress light leakage, and has an excellent workability and durability in a high-temperature and/or high-humidity condition.Type: ApplicationFiled: July 1, 2009Publication date: May 19, 2011Applicant: LG CHEM, LTD.Inventors: Ki Seok Jang, In Cheon Han, Min Soo Park
-
Publication number: 20110116022Abstract: The present invention relates to a pressure-sensitive adhesive composition, and a polarizer and a liquid crystal display (LCD) device using the pressure-sensitive adhesive composition, and more particularly, to a pressure-sensitive adhesive composition including (A) an acrylic copolymer and (B) a liquid optically-anisotropic compound having a mesogen core in its structure. The liquid optically-anisotropic compound having a mesogen core in its structure according to the present invention has superior solubility and compatibility with pressure-sensitive adhesive resin, and thus the pressure-sensitive adhesive composition including the liquid optically-anisotropic compound can relax stress caused by shrinkage of the polarizer and effectively compensate negative birefringence. Therefore, the polarizer and the LCD device using the pressure-sensitive adhesive composition can prevent light leakage originating from stress concentration in spite of long-term use.Type: ApplicationFiled: April 23, 2009Publication date: May 19, 2011Applicant: LG Chem LtdInventors: Ki Seok Jang, Min Soo Park, In Cheon Han, Woo Ha Kim, Min Jin Ko, Ki Youl Lee
-
Publication number: 20110111140Abstract: The present invention relates to a pressure-sensitive adhesive composition, a polarizer, and a liquid crystal display (LCD). According to the present invention, it is possible to provide a pressure-sensitive adhesive composition, which shows excellent endurance reliability in a high-temperature or high-humidity condition, has superior workability such as a superior re-cutting or re-peeling property, and is capable of effectively suppress light leakage occurring in an LCD, and a polarizer and an LCD which include a cured product of the pressure-sensitive adhesive composition.Type: ApplicationFiled: July 1, 2009Publication date: May 12, 2011Applicant: LG CHEM, LTD.Inventors: Ki Seok Jang, In Cheon Han, Min Soo Park