Patents by Inventor Hyo-Tae Kim
Hyo-Tae Kim 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: 20240128930Abstract: The present disclosure relates to an offset elimination operation of an internal operational amplifier of a data driving circuit and relates to a technique that applies different offset elimination methods for each position of an operational amplifier.Type: ApplicationFiled: October 13, 2023Publication date: April 18, 2024Applicant: LX SEMICON CO., LTD.Inventors: Yong Sung AHN, Ji Won KIM, Hyo Joong KIM, Kyung Min SHIN, Kyu Tae LEE, Ha Rim CHOI
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Patent number: 11950482Abstract: A color conversion panel includes a first color filter and a second color filter that are disposed on a substrate, a low refractive index layer disposed on the substrate, the first color filter, and the second color filter, the low refractive index layer including at least one of a first blue pigment and a first blue dye, a first color conversion layer overlapping the first color filter and including a semiconductor nanocrystal, a second color conversion layer overlapping the second color filter and including a semiconductor nanocrystal, and a transmissive layer that overlaps the low refractive index layer.Type: GrantFiled: August 11, 2021Date of Patent: April 2, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hyo Joon Kim, Jung Hyun Kwon, Yun Ha Ryu, Ki Soo Park, Seon-Tae Yoon, Hye Seung Lee
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Patent number: 9902889Abstract: Provided is an alumina composite ceramic composition which has electrical insulation properties as well as better mechanical strength and thermal conductivity than a typical alumina-based material. Thus, the alumina composite ceramic composition is promising for a material of a substrate or an insulating package of an electronic device. The alumina composite ceramic composition of the present invention may include alumina (Al2O3), zirconia (ZrO2) or yttria-stabilized zirconia as a first additive, and graphene oxide and carbon nanotubes, as a second additive. In this case, in consideration of two aspects of sinterability and electrical resistivity characteristics of the alumina composite ceramic composition, the graphene oxide may be appropriately adjusted to be in the form of a graphene oxide phase and a reduced graphene phase which coexist in the alumina composite ceramic composition.Type: GrantFiled: February 26, 2016Date of Patent: February 27, 2018Assignee: Korea Institute of Ceramic Engineering & TechnologyInventors: Hyo Tae Kim, Hyo Soon Shin, Chi Heon Kim
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Publication number: 20170152424Abstract: Provided is an alumina composite ceramic composition which has electrical insulation properties as well as better mechanical strength and thermal conductivity than a typical alumina-based material. Thus, the alumina composite ceramic composition is promising for a material of a substrate or an insulating package of an electronic device. The alumina composite ceramic composition of the present invention may include alumina (Al2O3), zirconia (ZrO2) or yttria-stabilized zirconia as a first additive, and graphene oxide and carbon nanotubes, as a second additive. In this case, in consideration of two aspects of sinterability and electrical resistivity characteristics of the alumina composite ceramic composition, the graphene oxide may be appropriately adjusted to be in the form of a graphene oxide phase and a reduced graphene phase which coexist in the alumina composite ceramic composition.Type: ApplicationFiled: February 26, 2016Publication date: June 1, 2017Inventors: Hyo Tae Kim, Hyo Soon Shin, Chi Heon Kim
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Patent number: 9550478Abstract: A control method for a hill start assistant control system may include determining that the vehicle is stopped and braked; receiving a current sensing value from an acceleration sensor on the vehicle which senses acceleration and periodically outputs a sensing value with the vehicle stopped and braked; determining whether a condition for stabilizing an output of the acceleration sensor is satisfied, using the current sensing value and a previous sensing value; finding an acceleration accumulation average by accumulating the current sensing value and averaging sensing values of the acceleration sensor which are accumulated up to a current time when the condition for stabilizing the output of the acceleration sensor is not satisfied; comparing the acceleration accumulation average with an accumulation reference value; and operating the hill start assistant control system, when the acceleration accumulation average is larger than the acceleration reference value.Type: GrantFiled: September 10, 2014Date of Patent: January 24, 2017Assignee: Hyundai Motor CompanyInventor: Hyo Tae Kim
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Publication number: 20150224968Abstract: A control method for a hill start assistant control system may include determining that the vehicle is stopped and braked; receiving a current sensing value from an acceleration sensor on the vehicle which senses acceleration and periodically outputs a sensing value with the vehicle stopped and braked; determining whether a condition for stabilizing an output of the acceleration sensor is satisfied, using the current sensing value and a previous sensing value; finding an acceleration accumulation average by accumulating the current sensing value and averaging sensing values of the acceleration sensor which are accumulated up to a current time when the condition for stabilizing the output of the acceleration sensor is not satisfied; comparing the acceleration accumulation average with an accumulation reference value; and operating the hill start assistant control system, when the acceleration accumulation average is larger than the acceleration reference value.Type: ApplicationFiled: September 10, 2014Publication date: August 13, 2015Applicant: Hyundai Motor CompanyInventor: Hyo Tae KIM
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Patent number: 9091421Abstract: The present invention provides an LED array module having an improved heat-dissipating effect, and a manufacturing method thereof. To this end, an LED array module includes one or more LED unit modules, the LED unit module comprising: an LED; a heat conductive heat-dissipating slug attached to the lower portion of the LED; and leads connected to the cathode and anode of the LED, respectively, wherein the LED array module comprises: a heat-dissipating plate; a heat conductive solder layer disposed and bonded between the upper surface of the heat-dissipating plate and the lower surface of the heat-dissipating slug; a first insulating layer formed on the upper surface of the heat-dissipating plate; and array electrodes which are formed on the upper surface of the insulating layer and are electrically connected to the leads to drive the LED.Type: GrantFiled: August 25, 2011Date of Patent: July 28, 2015Assignee: Korea Institute of Ceramic Eng. & Tech.Inventors: Hyo Tae Kim, Gi Seok Song, Heung Soon Kim
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Publication number: 20130271992Abstract: The present invention provides an LED array module having an improved heat-dissipating effect, and a manufacturing method thereof. To this end, an LED array module includes one or more LED unit modules, the LED unit module comprising: an LED; a heat conductive heat-dissipating slug attached to the lower portion of the LED; and leads connected to the cathode and anode of the LED, respectively, wherein the LED array module comprises: a heat-dissipating plate; a heat conductive solder layer disposed and bonded between the upper surface of the heat-dissipating plate and the lower surface of the heat-dissipating slug; a first insulating layer formed on the upper surface of the heat-dissipating plate; and array electrodes which are formed on the upper surface of the insulating layer and are electrically connected to the leads to drive the LED.Type: ApplicationFiled: August 25, 2011Publication date: October 17, 2013Applicants: SHINWOO TECH CO., LTD., KOREA INSTITUTE OF CERAMIC ENG. & TECH.Inventors: Hyo Tae Kim, Gi Seok Song, Heung Soon Kim
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Patent number: 8526711Abstract: Disclosed is an apparatus and method for ray-tracing using a path preprocess. The method for ray-tracing including launching a ray from a transmitting point at angles with regular intervals, setting a first side of an object where the launched ray is projected as a reference patch, and searching predetermined preprocessed path data for a counterpart patch corresponding to a second side of another object, the second side being exposed to the projected ray reflected or diffracted from the set reference patch, and tracing a transmission path of the reflected or diffracted ray.Type: GrantFiled: September 24, 2008Date of Patent: September 3, 2013Assignees: Electronics and Telecommunications Research Institute, Postech Academy-Industry FoundationInventors: Young Keun Yoon, Jong Ho Kim, Heon Jin Hong, Kangkook Park, Jae-Hyun Yeom, Hyo-Tae Kim
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Patent number: 8101536Abstract: A glass-free microwave dielectric ceramic that can be sintered at low temperature is provided. The glass-free microwave dielectric ceramic composition includes (M1-x2+M?x2+)N4+B2O6 (wherein M and M? are different each other, each being one among Ba, Ca and Sr; N is one among Sn, Zr and Ti; and 0<x<1), M2+(N1-y4+N?y4+)B2O6 (wherein M is one among Ba, Ca and Sr; N and N? are different from each other, each being one among Sn, Zr and Ti; and 0<y<l), or (M1-x2+M?x2+)(N1-y4+)B2O6 (wherein M and M? are different from each other, each being one among Ba, Ca and Sr; N and N? are different from each other, each being one among Sn, Zr and Ti; 0<x<1; and 0<y<l). In addition, the glass-free microwave dielectric ceramic composition may further includes approximately 1 wt % to approximately 7 wt % of a sintering aid represented by a formula, 0.12CuO+0.88Bi2O3. As such, the glass-free microwave dielectric ceramic composition may be sintered at a low temperature at lowest 875° C.Type: GrantFiled: November 22, 2007Date of Patent: January 24, 2012Assignee: Korea Institute of Ceramic Engineering & TechnologyInventors: Hyo Tae Kim, Jong Hee Kim, Myung Hwa Nam
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Publication number: 20110245064Abstract: The present disclosure relates to a non-sintering metal-insulator-metal (MIM) capacitor and a method of manufacturing the same. The method of manufacturing a non-sintered MIM capacitor includes manufacturing a lower metal-insulator-upper metal structure, wherein the insulator is formed by a non-sintering process comprising: preparing a ceramic-polymer composition comprising a highly dielectric ceramic powder, a polymer resin, and a solvent, the highly dielectric ceramic powder comprising small powder and large powder having a larger average particle size than the small powder; forming a ceramic-polymer film by depositing the ceramic-polymer composition on the lower metal; and curing the polymer resin in the ceramic-polymer film.Type: ApplicationFiled: May 10, 2010Publication date: October 6, 2011Applicants: KOREA INSTITUTE OF CERAMIC ENGINEERING AND TECHNOLOGYInventors: Ji-Hoon Kim, Jong-Hee Kim, Young-Jun Yoon, Hyo-Tae Kim, Jong-Woo Im
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Publication number: 20110232524Abstract: The present invention discloses a ceramic ink having an improved refill rate, which enables the manufacture of a ceramic thick film having delicate and improved ceramic properties. To this end, the ceramic ink of the present invention contains a certain amount of a solvent in which ceramic powder is dispersed, and the particles of the ceramic powder have on average a ratio of less than 20% in difference value between the maximum vertical length Dv and the maximum horizontal length Dh with respect to the maximum horizontal length Dh of the cross section of the particle. Also, in case of the presence of a plurality of interior angles at the circumference of the cross section, the maximal angle can be less than 135° among the interior angles.Type: ApplicationFiled: October 23, 2009Publication date: September 29, 2011Inventors: Ji Hoon Kim, Young Joon Yoon, Jong Hee Kim, Hyo Tae Kim, Eun Hae Koo
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Publication number: 20110044508Abstract: Disclosed is an apparatus and method for ray-tracing using a path preprocess. The method for ray-tracing including launching a ray from a transmitting point at angles with regular intervals, setting a first side of an object where the launched ray is projected as a reference patch, and searching predetermined preprocessed path data for a counterpart patch corresponding to a second side of another object, the second side being exposed to the projected ray reflected or diffracted from the set reference patch, and tracing a transmission path of the reflected or diffracted ray.Type: ApplicationFiled: September 24, 2008Publication date: February 24, 2011Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Young Keun Yoon, Jong Ho Kim, Heon Jin Hong, Kangkook Park, Jae-Hyun Yeom, Hyo-Tae Kim
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Publication number: 20100120607Abstract: A glass-free microwave dielectric ceramic that can be sintered at low temperature, and a manufacturing method thereof are provided. The glass-free microwave dielectric ceramic composition includes a composition represented by a formula, M2+N4+B2O6, wherein M is one element of Ba, Ca and Sr, and N is one element of Sn, Zr and Ti. The M may be replaced by two elements of Ba, Ca and Sr different from each other, to form a composition represented by a formula, (M1-x2+Mx2+)N4+B2O6, wherein 0<x<1. The N may also be replaced by two elements of Sn, Zr and Ti different from each other, to form a composition represented by a formula, M2+(N1-y4+Ny4+)B2O6, wherein 0<y<1. Furthermore, it is also possible to replace both of the M and N to form a composition represented by a formula, (M1-x2+Mx2+)(N1-y4+Ny4+)B2O6, wherein 0<x<1 and 0<y<1.Type: ApplicationFiled: November 22, 2007Publication date: May 13, 2010Applicant: Korea Institute of Ceramic Engineering & Technolog yInventors: Hyo Tae Kim, Jong Hee Kim, Myung Hwa Nam
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Patent number: 6794324Abstract: A low loss high-frequency dielectric ceramic composition for sintering at a low temperature and method of manufacturing the same which is characterized in that excellent dielectric properties such as a much lower sintering temperature and higher quality coefficient and dielectric constant, compared to conventional high-frequency ceramic composition, a stabilized temperature coefficient, and a temperature compensating property varied according to a composition, are implemented using a low-priced material such as ZnO—MO (M═Mg, Co, Ni)—TiO2. In addition, Ag, Cu, an alloy thereof, or an Ag/Pd alloy can be used as an internal electrode. Thus, the composition of the present invention can be used as a dielectric material for all sorts of high-frequency devices, such as a stacked chip capacitor, stacked chip filter, stacked chip capacitor/inductor composite device and module, low temperature sintered substrate, resonator or filter and ceramic antenna.Type: GrantFiled: April 3, 2002Date of Patent: September 21, 2004Assignee: Korea Institute of Science and TechnologyInventors: Yoon-Ho Kim, Hyo-Tae Kim
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Patent number: 6743744Abstract: A low loss high-frequency dielectric ceramic composition for sintering at a low temperature and method of manufacturing the same which is characterized in that excellent dielectric properties such as a much lower sintering temperature and higher quality coefficient and dielectric constant, compared to a conventional high-frequency ceramic composition, a stabilized temperature coefficient, and a temperature compensating property varied according to a composition, are implemented using a low-priced material such as ZnO—Mo (M═Mg, Co, Ni)—TiO2. In addition, Ag, Cu, an alloy thereof, or an Ag/Pd alloy can be used as an internal electrode. Thus, the composition of the present invention can be used as a dielectric material for all sorts of high-frequency devices, such as a multilayer chip capacitor, multilayer chip filter, multilayer chip capacitor/inductor composite device and module, low temperature sintered substrate, resonator or filter and ceramic antenna.Type: GrantFiled: May 17, 2002Date of Patent: June 1, 2004Assignee: Korea Institute of Science and TechnologyInventors: Yoon-Ho Kim, Hyo-Tae Kim
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Patent number: 6101693Abstract: A low-temperature sinterable dielectric composition with a high dielectric constant wherein x=2-4 mol %, y=0.5-3.0 mol % and z=3-5 mol % in [95PMN-5PT]-x(PbO)-y(CaO)-z(CuO).Type: GrantFiled: June 13, 1997Date of Patent: August 15, 2000Assignee: Korea Institute Of Science and TechnologyInventors: Yoon Ho Kim, Hyo Tae Kim
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Patent number: 5866492Abstract: A low-temperature sintering temperature compensating microwave dielectric ceramic composition includes ZnTiO.sub.3 stoichiometrically combined with ZnO and TiO.sub.3, wherein Zn.sup.2+ of the ZnTiO.sub.3 is replaced with Mg.sup.2+ to produce (Zn.sub.1-X Mg.sub.X)TiO.sub.3 (X=0.02.about.0.5). The composite has a fine structure and improved dielectric property without a sintering agent.Type: GrantFiled: December 31, 1996Date of Patent: February 2, 1999Assignee: Korea Institute of Science and TechnologyInventors: Hyo Tae Kim, Yoon Ho Kim, Young Ho Roh
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Patent number: 5767030Abstract: An improved high frequency dielectric ceramic composition and a fabrication method thereof, which is sintered at a low temperature ranging from 900.degree. to 1250.degree. C. without using a sintering aid and which has a fine structure and excellent dielectric characteristics, which includes of TiO.sub.2 .multidot.x(ZnO) where 0.04.ltoreq.x.ltoreq.1.0.Type: GrantFiled: September 5, 1996Date of Patent: June 16, 1998Assignee: Korea Institute of Science and TechnologyInventors: Hyo Tae Kim, Yoon Ho Kim
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Patent number: 5680291Abstract: A low-temperature sinterable dielectric composition with a high dielectric constant is disclosed wherein x=2-4 mol %, y=0.5-3.0 mol % and z=3-5 mol % in ?95PMN-5PT!-x(PbO)-y(CaO)-z(CuO).Type: GrantFiled: December 22, 1995Date of Patent: October 21, 1997Assignee: Korea Institute of Science and TechnologyInventors: Yoon Ho Kim, Hyo Tae Kim