Patents by Inventor Yang-Kuo Kuo
Yang-Kuo Kuo 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).
-
Patent number: 11056796Abstract: The present invention provides a switching component of a directly flat-attached active frequency selective surface (AFSS) and fabricating method thereof. The present invention utilizes P-type and N-type thin film materials to fabricate a PN diode switching component capable of adjusting a resonance frequency of the AFSS, such that the AFSS together with the switching component could be integrally fabricated into a single thin film. Therefore, by utilizing a stepwise coating method to fabricate each layer with corresponding material, an equivalent length of a metal pattern could be adjusted, thereby changing the resonance frequency of the AFSS.Type: GrantFiled: December 5, 2019Date of Patent: July 6, 2021Assignee: National Chung-Shan Institute of Science and TechnologyInventors: Jian-Long Ruan, Shyh-Jer Huang, Yang-Kuo Kuo
-
Publication number: 20210111304Abstract: A surface modification method of an aluminum nitride ceramic substrate uses a sputtering deposition and a metal organic chemical vapor deposition (MOCVD) to perform a surface modification of the polycrystalline aluminum nitride ceramic substrate. Accordingly, an aluminum nitride layer is epitaxially grown in two stages of temperature by MOCVD, such that a crystallization phase of monocrystalline aluminum nitride material may be formed on the surface of the polycrystalline aluminum nitride ceramic substrate, so as to decrease a surface roughness of the polycrystalline aluminum nitride ceramic substrate.Type: ApplicationFiled: October 12, 2020Publication date: April 15, 2021Inventors: Chun-Te Wu, Yang-Kuo Kuo, Hong-Ting Huang
-
Patent number: 10923621Abstract: The present invention uses a photolithography process and an electroplating process to perform. TAV copper filling and patterning of the fabrication of the double side copper-plated layers to plate the double side copper-plated layers in advance at the TAV through holes to serve as a stress buffer layer of the aluminum nitride substrates. Then the subsequent pattern designs of the copper-plated layers are customized. According to the simulation theory calculations, it is proved that the stress which accumulates on the short-side of the copper-plated layer of the aluminum nitride substrate with the asymmetric structure may be effectively reduced to facilitate the improvement of the reliability of the aluminum nitride substrate.Type: GrantFiled: October 25, 2019Date of Patent: February 16, 2021Assignee: National Chung-Shan Institute of Science and TechnologyInventors: Chun-Te Wu, Yang-Kuo Kuo, Cheng-Hung Shih, Hong-Ting Huang
-
Publication number: 20210005974Abstract: The present invention provides a switching component of a directly flat-attached active frequency selective surface (AFSS) and fabricating method thereof. The present invention utilizes P-type and N-type thin film materials to fabricate a PN diode switching component capable of adjusting a resonance frequency of the AFSS, such that the AFSS together with the switching component could be integrally fabricated into a single thin film. Therefore, by utilizing a stepwise coating method to fabricate each layer with corresponding material, an equivalent length of a metal pattern could be adjusted, thereby changing the resonance frequency of the AFSS.Type: ApplicationFiled: December 5, 2019Publication date: January 7, 2021Inventors: Jian-Long Ruan, Shyh-Jer Huang, Yang-Kuo Kuo
-
Patent number: 10711342Abstract: A method of producing a secondary lens with hollow nano structures comprises the following steps (a) forming a polycrystalline seed layer on the surface of a lens; (b) growing a plurality of nano-rod structures over the polycrystalline seed layer in a random arrangement; (c) removing the portion of the seed layer where the nano-rod structure does not grow so that the surface of the lens therebeneath is exposed to outside; (d) sputtering a ceramic material layer over the plurality of nano-rod structures and the exposed surface portion of the lens; (e) removing the plurality of nano-rod structures and leaving a ceramic material layer having a plurality of hollow nano-rod structures in a random arrangement. A layer with hollow nano structures is formed on the surface of a lens wherein the hollow nano structures have the effect of scattering light and can improve the uniform illuminance of a secondary lens.Type: GrantFiled: December 13, 2017Date of Patent: July 14, 2020Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jian-Long Ruan, Shyh-Jer Huang, Yang-Kuo Kuo
-
Publication number: 20200152825Abstract: The present invention uses a photolithography process and an electroplating process to perform. TAV copper filling and patterning of the fabrication of the double side copper-plated layers to plate the double side copper-plated layers in advance at the TAV through holes to serve as a stress buffer layer of the aluminum nitride substrates. Then the subsequent pattern designs of the copper-plated layers are customized. According to the simulation theory calculations, it is proved that the stress which accumulates on the short-side of the copper-plated layer of the aluminum nitride substrate with the asymmetric structure may be effectively reduced to facilitate the improvement of the reliability of the aluminum nitride substrate.Type: ApplicationFiled: October 25, 2019Publication date: May 14, 2020Inventors: Chun-Te Wu, Yang-Kuo Kuo, Cheng-Hung Shih, Hong-Ting Huang
-
Patent number: 10384941Abstract: A method utilizes easily obtained carbon as carbon source for sintering, followed by high energy ball milling process with planetary ball mill for high energy homogenous mixing of the carbon source, solvent and nano-level silicon dioxide powder, along with a high energy ball milling process repeatedly performed using different sized ball mill beads, so as to formulate a spray granulation slurry with the optimal viscosity, to complete the process of micronization of carbon source evenly encapsulated by silicon dioxide powders. The optimal ratio of C/SiO2 is 1-2.5 to produce a spherical silicon dioxide powder (40-50 ?m) evenly encapsulated by the carbon source. The powder is then subjected to a high temperature (1450?) sintering process under nitrogen gas. Lastly, the sintered silicon nitride powder is subjected to homogenizing carbon removal process in a rotational high temperature furnace to complete the fabricating process.Type: GrantFiled: December 13, 2017Date of Patent: August 20, 2019Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Chun-Te Wu, Kuan-Ting Lai, Cheng-Hung Shih, Yang-Kuo Kuo
-
Patent number: 10362684Abstract: The present invention relates to a method for improving adhesion between ceramic and a thick film circuit. The method is particularly directed to accelerate the formation of a ceramic-metal eutectic phase between the ceramic carrier and the metal circuit by solid-phase diffusion bonding under a positive atmosphere. A metallic conductive slurry or its oxide slurry is printed on the surface of the ceramic carrier to form a circuit pattern by a thick film screen printing. The ceramic carrier is placed in an oven with temperature controlled by a program under a positive-pressure atmosphere of an inert gas including nitrogen, hydrogen or their mixtures. An eutectic phase is formed between the ceramic carrier and the metal circuit under a high temperature eutectic condition to increase the adhesion between the ceramic carrier and the thick film circuit.Type: GrantFiled: October 11, 2018Date of Patent: July 23, 2019Assignee: National Chung-Shan Institute of Science and TechnologyInventors: Chia-Ting Lin, Jlin-Fuh Yau, Chung-Yen Lu, Yang-Kuo Kuo
-
Publication number: 20190177162Abstract: A method utilizes easily obtained carbon as carbon source for sintering, followed by high energy ball milling process with planetary ball mill for high energy homogenous mixing of the carbon source, solvent and nano-level silicon dioxide powder, along with a high energy ball milling process repeatedly performed using different sized ball mill beads, so as to formulate a spray granulation slurry with the optimal viscosity, to complete the process of micronization of carbon source evenly encapsulated by silicon dioxide powders. The optimal ratio of C/SiO2 is 1-2.5 to produce a spherical silicon dioxide powder (40-50 ?m) evenly encapsulated by the carbon source. The powder is then subjected to a high temperature (1450?) sintering process under nitrogen gas. Lastly, the sintered silicon nitride powder is subjected to homogenizing carbon removal process in a rotational high temperature furnace to complete the fabricating process.Type: ApplicationFiled: December 13, 2017Publication date: June 13, 2019Inventors: CHUN-TE WU, KUAN-TING LAI, CHENG-HUNG SHIH, YANG-KUO KUO
-
Publication number: 20190177833Abstract: A method of producing a secondary lens with hollow nano structures comprises the following steps (a) forming a polycrystalline seed layer on the surface of a lens; (b) growing a plurality of nano-rod structures over the polycrystalline seed layer in a random arrangement; (c) removing the portion of the seed layer where the nano-rod structure does not grow so that the surface of the lens therebeneath is exposed to outside; (d) sputtering a ceramic material layer over the plurality of nano-rod structures and the exposed surface portion of the lens; (e) removing the plurality of nano-rod structures and leaving a ceramic material layer having a plurality of hollow nano-rod structures in a random arrangement. A layer with hollow nano structures is formed on the surface of a lens wherein the hollow nano structures have the effect of scattering light and can improve the uniform illuminance of a secondary lens.Type: ApplicationFiled: December 13, 2017Publication date: June 13, 2019Inventors: Jian-Long Ruan, Shyh-Jer Huang, Yang-Kuo Kuo
-
Patent number: 10144645Abstract: A method for preparing spherical aluminum oxynitride powder, comprising the steps of (A) providing an alumina powder and a resin, both of which are then dispersed and dissolved in a solvent to form a mixed slurry; (B) subjecting the mixed slurry to spray drying to form a spherical powder; (C) subjecting the spherical powder to a carbonization treatment under an inert atmosphere to form a carbonized spherical powder; (D) subjecting the carbonized spherical powder to carbothermic reduction in a nitrogen-containing atmosphere at a temperature of 1450° C. to 1550° C.; (E) keeping the spherical powder that has been subjected to carbothermic reduction in the nitrogen-containing atmosphere to carry out a nitridation reaction at a temperature of 1700° C. to 1730° C., forming a nitrided spherical aluminum oxynitride powder; (F) subjecting the nitrided spherical aluminum oxynitride powder to decarbonization in an oxygen-containing atmosphere to form the spherical aluminum oxynitride powder.Type: GrantFiled: July 27, 2017Date of Patent: December 4, 2018Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Kuan-Ting Lai, Chun-Te Wu, Cheng-Hung Shih, Yang-Kuo Kuo, Lea-Hwung Leu
-
Patent number: 10060036Abstract: A yellow light photolithographic process and an electroplating process are performed multiple times to produce copper plated layers on the aluminum nitride (AlN) substrate. The copper plated layers are plated in sequence into a stack structure with each layer having reduced length. The parameters of the yellow light photolithographic process can be adjusted, such that each copper plated layer is formed horizontally for a predetermined length into a stack structure of step layers tapering off upward, while a predetermined angle is formed by the tangent line passing through edges of the respective step layers, and the surface of the AlN substrate. An adhesion layer, a copper seed layer, a first copper plated layer, a second copper plated layer, a third copper plated layer, and a nickel plated layer are formed in sequence on the AlN substrate, to form a metalized circuit of multi-layer stack.Type: GrantFiled: December 4, 2015Date of Patent: August 28, 2018Assignee: NATIONAL CHUNG-SHAN INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Chun-Te Wu, Yang-Kuo Kuo
-
Patent number: 9978590Abstract: A method of manufacturing an epitaxiable heat-dissipating substrate comprises the steps of (A) forming a roughened surface on a substrate made of a polycrystalline or amorphous material with a high thermal conductivity coefficient; (B) forming a flat layer on the roughened surface; and (C) forming a buffer layer on the flat layer. The flat layer reduces the surface roughness of the substrate, and then the buffer layer functions as a base for epitaxial growth, thereby being directly applicable to production of semiconductor devices which are flat and capable of isotropic epitaxial growth.Type: GrantFiled: May 24, 2017Date of Patent: May 22, 2018Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jian-Long Ruan, Shyh-Jer Huang, Hsin-Chieh Yu, Yang-Kuo Kuo
-
Publication number: 20170159187Abstract: A yellow light photolithographic process and an electroplating process are performed multiple times to produce copper plated layers on the aluminum nitride (AlN) substrate. The copper plated layers are plated in sequence into a stack structure with each layer having reduced length. The parameters of the yellow light photolithographic process can be adjusted, such that each copper plated layer is formed horizontally for a predetermined length into a stack structure of step layers tapering off upward, while a predetermined angle is formed by the tangent line passing through edges of the respective step layers, and the surface of the AlN substrate. An adhesion layer, a copper seed layer, a first copper plated layer, a second copper plated layer, a third copper plated layer, and a nickel plated layer are formed in sequence on the AlN substrate, to form a metalized circuit of multi-layer stack.Type: ApplicationFiled: December 4, 2015Publication date: June 8, 2017Inventors: Chun-Te Wu, Yang-Kuo Kuo
-
Publication number: 20160148917Abstract: A cooling device for electronic components is a combination of substrate (aluminum nitride substrate—thermoelectric elements—aluminum nitride substrate) and utilizing the temperature difference generated by two top and bottom ends of the cooling device to effectively remove the heat generated by the electronic components. This cooling device not only can effectively reduce temperature of the electronic components, but also store the power generated through its thermoelectric effect.Type: ApplicationFiled: January 30, 2016Publication date: May 26, 2016Inventors: Yang-Kuo Kuo, Chia-Yi Hsiang, Hung-Tai Ku
-
Publication number: 20150345044Abstract: A method of electroplating a cobalt alloy to a wiring surface includes providing a substrate having a metal wiring; electroplating a cobalt-based alloy to the metal wiring at a deposition rate of 15-30 ?m/hr to form thereon a cobalt-based alloy electroplated layer 0.5 ?m-5 ?m thick, wherein the main constituent element of the cobalt-based alloy is cobalt; plating gold to the cobalt-based alloy electroplated layer to form thereon a gold plated layer 0.03 ?m-0.3 ?m thick. The surface of the cobalt-based alloy electroplated layer features a crystalline-phase structure full of micro-protuberances, and the thickness of the gold plated layer is reduced to 0.03 ?m.Type: ApplicationFiled: May 29, 2014Publication date: December 3, 2015Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Chi-Haw CHIANG, Chih WANG, Yu-Ping WANG, Chun-Yu LEE, Ren-Ruey FANG, Yang-Kuo KUO
-
Publication number: 20150348893Abstract: A method of manufacturing a three-dimensional integrated circuit comprising an aluminum nitride interposer is introduced. The method includes providing a first circuit component; providing a plurality of first conductive blocks on the first circuit component; providing an aluminum nitride interposer on the first circuit component, wherein the aluminum nitride interposer has microvias each comprising therein a conductor with an end in contact with a corresponding one of the first conductive blocks; providing second conductive blocks on the aluminum nitride interposer, wherein the second conductive blocks are in contact with the other ends of the conductors in the microvias; and providing at least a second circuit component disposed on the aluminum nitride interposer and electrically connected to the first circuit component through the first and second conductive blocks and the conductors.Type: ApplicationFiled: May 29, 2014Publication date: December 3, 2015Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: CHIH WANG, CHI-HAW CHIANG, YU-PING WANG, YANG-KUO KUO
-
Patent number: 9196508Abstract: A three-dimensional integrateds circuit structure includes a first metal circuit substrate, an interposer substrate disposed on the first metal circuit substrate and electrically connected therewith, and at least one semiconductor component disposed on the interposer substrate. The interposer substrate is used to dissipate the heat generated by the operation of the semiconductor components, so as to achieve the objective of increasing the lifespan of the semiconductor components.Type: GrantFiled: October 19, 2012Date of Patent: November 24, 2015Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Yang-Kuo Kuo, Chia-Yi Hsiang, Hung-Tai Ku
-
Publication number: 20150155194Abstract: A method of preparing a heterogeneous stacked co-fired ceramic for use in an aluminum nitride-based electrostatic chuck includes providing a first aluminum nitride blank layer; applying a metal ink to the first aluminum nitride blank layer to form thereon an electrostatic electrode layer by screen printing, wherein the metal ink mainly contains a metal of high melting point; stacking a second aluminum nitride blank layer on the electrostatic electrode layer; laminating the first aluminum nitride blank layer, the electrostatic electrode layer, and the second aluminum nitride blank layer (collectively known as a heterogeneous ceramic) together; and co-firing the laminated heterogeneous ceramic in accordance with a sintering temperature rising curve to prepare the heterogeneous stacked co-fired ceramic characterized by reduced differences in sintering shrinkage ratio between the electrostatic electrode and aluminum nitride blank and enhanced strength and adhesion of the interface between the electrostatic electrType: ApplicationFiled: May 19, 2014Publication date: June 4, 2015Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: YANG-KUO KUO, JIAN-LONG RUAN, CHENG-HUNG SHIH, LEA-HWUNG LEU
-
Publication number: 20140075960Abstract: A cooling device for electronic components is a combination of substrate (aluminum nitride substrate—thermoelectric elements—aluminum nitride substrate) and utilizing the temperature difference generated by two top and bottom ends of the cooling device to effectively remove the heat generated by the electronic components. This cooling device not only can effectively reduce temperature of the electronic components, but also store the power generated by its thermoelectric effect.Type: ApplicationFiled: December 8, 2012Publication date: March 20, 2014Applicant: CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY, ARMAMENTS BUREAU, M. N. DInventors: Yang-Kuo Kuo, Chia-Yi Hsiang, Hung-Tai Ku