Patents Assigned to Chung-Shan Institute of Science & Technology
  • Publication number: 20240234561
    Abstract: A high electron mobility transistor includes a growth substrate, a lattice matching layer, an back-barrier layer, an electron blocking layer, a channel layer, an active layer, a source, a gate, and a drain. The lattice matching layer and the back-barrier layer are formed on the growth substrate. The back-barrier layer includes GaN doped with C. The electron blocking layer is formed on the back-barrier layer. The electron blocking layer includes AlGaN, wherein the doping percent of Al atoms of the AlGaN is 3˜5% and the doping percent of Ga atoms of the AlGaN is 95˜97%. The electron blocking layer has a thickness of 2˜5 nm. The channel layer and the active layer are formed on the electron blocking layer. The source, the gate, and the drain are formed on the active layer.
    Type: Application
    Filed: January 13, 2023
    Publication date: July 11, 2024
    Applicants: National Yang Ming Chiao Tung University, National Chung-Shan Institute of Science and Technology
    Inventors: Edward Yi CHANG, You-Chen WENG, Min-Lu KAO
  • Publication number: 20240234538
    Abstract: A high electron mobility transistor and a method for fabricating the same is disclosed. Firstly, a lattice matching layer, a channel layer, and an AlGaN layer are sequentially formed on a growth substrate. The AlGaN layer includes a first area, a second area, and a third area, wherein the second area is located between the first area and the third area. Then, an insulation block is formed on the second area of the AlGaN layer and two GaN blocks are respectively formed on the first area and the third area of the AlGaN layer. Two InAlGaN blocks are respectively formed on the GaN blocks and the insulation block is removed. Finally, a gate is formed to interfere the second area of the AlGaN layer and a source and a drain are respectively formed on the InAlGaN blocks.
    Type: Application
    Filed: January 13, 2023
    Publication date: July 11, 2024
    Applicants: National Yang Ming Chiao Tung University, National Chung-Shan Institute of Science and Technology
    Inventors: Edward Yi CHANG, You-Chen WENG, Min-Lu Kao
  • Publication number: 20240136422
    Abstract: A high electron mobility transistor and a method for fabricating the same is disclosed. Firstly, a lattice matching layer, a channel layer, and an AlGaN layer are sequentially formed on a growth substrate. The AlGaN layer includes a first area, a second area, and a third area, wherein the second area is located between the first area and the third area. Then, an insulation block is formed on the second area of the AlGaN layer and two GaN blocks are respectively formed on the first area and the third area of the AlGaN layer. Two InAlGaN blocks are respectively formed on the GaN blocks and the insulation block is removed. Finally, a gate is formed to interfere the second area of the AlGaN layer and a source and a drain are respectively formed on the InAlGaN blocks.
    Type: Application
    Filed: January 13, 2023
    Publication date: April 25, 2024
    Applicants: National Yang Ming Chiao Tung University, National Chung-Shan Institute of Science and Technology
    Inventors: Edward Yi CHANG, You-Chen WENG, Min-Lu Kao
  • Publication number: 20240136432
    Abstract: A high electron mobility transistor includes a growth substrate, a lattice matching layer, an back-barrier layer, an electron blocking layer, a channel layer, an active layer, a source, a gate, and a drain. The lattice matching layer and the back-barrier layer are formed on the growth substrate. The back-barrier layer includes GaN doped with C. The electron blocking layer is formed on the back-barrier layer. The electron blocking layer includes AlGaN, wherein the doping percent of Al atoms of the AlGaN is 3˜5% and the doping percent of Ga atoms of the AlGaN is 95˜97%. The electron blocking layer has a thickness of 2˜5 nm. The channel layer and the active layer are formed on the electron blocking layer. The source, the gate, and the drain are formed on the active layer.
    Type: Application
    Filed: January 13, 2023
    Publication date: April 25, 2024
    Applicants: National Yang Ming Chiao Tung University, National Chung-Shan Institute of Science and Technology
    Inventors: Edward Yi CHANG, You-Chen WENG, Min-Lu KAO
  • Patent number: 11926909
    Abstract: To provide a gas-liquid separator of a water electrolysis system, comprising: a liquid feeding atomizer and a gas-liquid separation chamber, wherein the liquid feeding atomizer includes a liquid feeding pressurized tube; and an atomizing spray head, in which the atomizing spray head converts a gas-liquid mixed liquor after pressurized by the liquid feeding pressurized tube into a mist droplet gas-liquid mixture. The gas-liquid separation chamber comprises a spiral flowing way, and the spiral flowing way extends the time that the mist droplet gas-liquid mixture spraying into the gas-liquid separation chamber flows downwards to the bottom of the gas-liquid separation chamber; an ultrasonic oscillation mechanism; a stirrer; an internal reservoir; and a filter mechanism, which performs the gas-liquid separation for unbroken bubbles in the mist droplet gas-liquid mixture through the pore difference.
    Type: Grant
    Filed: August 12, 2021
    Date of Patent: March 12, 2024
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chia-Kan Hao, Kuan-Ting Lai, Chung-Yen Lu
  • Patent number: 11927780
    Abstract: A dielectric grating apparatus comprises a substrate; a grating layer, disposed above the substrate; a first interference layer, disposed above the substrate; and a second interference layer, adjacent to the first interference layer, wherein a refractive index of a material of the second interference layer is greater than a refractive index of a material of the first interference layer.
    Type: Grant
    Filed: May 31, 2022
    Date of Patent: March 12, 2024
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jian-Hung Lin, Chiang-Hsin Lin, Po-Tse Tai, Tsong-Dong Wang, Bo-Kai Feng
  • Patent number: 11885690
    Abstract: A high-precision non-contact temperature measurement device includes: a thermal insulation box made of a thermal insulation material and having therein a receiving space; a dynamic constant-temperature feedback control module for controlling temperature of the receiving space; and a non-temperature-sensing thermal imager disposed in the receiving space. The device achieves system thermal insulation within a non-contact temperature measurement gauge, maintains the overall closed system dynamically at constant temperature, compensates for effects of internal chip self-heating effect and visual field background temperature variation, and finally calculates average temperature of surfaces of a target precisely with an imaging, non-contact temperature measurement gauge and a temperature calibration algorithm widely used in thermal-imaging non-contact temperature measurement.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: January 30, 2024
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Shiang-Feng Tang, Shun-Lung Yen, Kun-Chi Lo, Wen-Jen Lin
  • Patent number: 11850799
    Abstract: A powdered surface monitoring system of additive manufacturing comprises an additive manufacturing processing cavity, having therein a working area carrying powder to be sintered; a laser source, generating a laser beam, which passes through a reflector, a dichroic mirror and a scanning vibration mirror and is transmitted to an upper surface of the powder in the working area; a polarization imaging device, having therein a beam expander group, a polarizer group and at least one photodetector, the polarizer group consisting of a plurality of linear polarizers, and the number of photodetectors being equal to the number of the linear polarizers.
    Type: Grant
    Filed: October 26, 2022
    Date of Patent: December 26, 2023
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Kuo-Kuang Jen, Yi-Cherng Ferng, Chia-Hsiang Chang, Chun-Hsiang Huang, Yuan-Yao Lin, Chao-Kuei Lee, Yi-Jen Chiu
  • Patent number: 11768112
    Abstract: An insert coaxial thermal radiation image evaluating system includes a cage support, first lens, first cage movable frame, second cage movable frame, cage holder and light detector. The first cage movable frame is movably disposed at the cage support and connected to the first lens. The second cage movable frame is movably disposed at the cage support and connected to the light detector. The cage holder is connected to the cage support to fix the cage support to an optical substrate. The first cage movable frame is movably disposed in the cage holder. The first lens and a second lens of a metal additive manufacturing system together form a structure of conjugate foci, such that a thermal radiation generated from a high-power infrared laser irradiation zone forms according to a fixed ratio an image captured by the light detector.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: September 26, 2023
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Yuan-Yao Lin, Chao-Kuei Lee, Yi-Jen Chiu, Chung-Chun Huang, Qian-Mao Zhou, Ya-Hsuan Cheng, Ming-Wei Liu, Kuo-Kuang Jen, Chih-Peng Chen
  • Patent number: 11675018
    Abstract: A portable battery detection device includes a battery data receiving module for receiving battery data, a temperature measurement module for measuring battery temperature, a gas measurement module for measuring discharged gas, an insulation resistance measurement module for measuring insulation resistance, a serial impedance measurement module for measuring serial impedance, a data acquisition module for receiving various data sent by the temperature measurement module and the gas measurement module, an electric meter module for measuring DC voltage, current, and impedance, the data integration module for receiving data transmitted by the battery data receiving module, the electric meter module, and the insulation resistance measurement module, and then integrating the data to the processor module, and the processor module for using data received from the data integration module, the data acquisition module, and the serial impedance measurement module to transmit data, control, and manage the operation of th
    Type: Grant
    Filed: December 29, 2021
    Date of Patent: June 13, 2023
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Dao-Qin Lin, Wei-Min Hsiao, Shih-Chang Tseng, Chih-Hsien Chung, Gwo-Huei You, Kuo-Kuang Jen
  • Patent number: 11655204
    Abstract: A novel promotor which contains an aniline derivative is introduced. By using the promotor alone, the time and temperature of the curing reaction of the vinyl ester resin can be controlled by the unique steric effect and electronic properties of the aniline derivative. A method for preparing the above promotor is also introduced.
    Type: Grant
    Filed: February 21, 2021
    Date of Patent: May 23, 2023
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Yi-Kang Lan, Chi-Wi Ong, Yong-Yun Zhang
  • Patent number: 11658370
    Abstract: A safety protection device for a battery test system includes a system device, an alternating current changeover switch and a direct current changeover switch. The system device is coupled to a load device. One terminal of the AC changeover switch is coupled to an AC source, the other terminal of the AC changeover switch is coupled to the system device. One terminal of the DC changeover switch is coupled to a battery pack, the other terminal of the DC changeover switch is coupled to the system device. The system device detects in real time a plurality of sets of detection information of the battery pack, performs a plurality of determinations on the plurality of sets of detection information to obtain a plurality of sets of determination information. The system device respectively switches the AC changeover switch and DC changeover switch according to the plurality of sets of determination information.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: May 23, 2023
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Wei-Min Hsiao, Chih-Hsien Chung, Gwo-Huei You, Kuo-Kuang Jen
  • Patent number: 11643367
    Abstract: A composite material fabrication method includes stacking a plurality of fiber layers and a first binder and curing the first binder to form a three-dimensional structure with a plurality of mesh openings, and filling the plurality of mesh openings with a plurality of fiber filaments of a fiber array and a second binder and curing the second binder. A plurality of first mesh openings of the plurality of mesh openings are connected in a first direction.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: May 9, 2023
    Assignee: National Chung-Shan Institute of Science and Technology
    Inventors: Mau-Yi Huang, Hao-Chung Hsiao
  • Patent number: 11639902
    Abstract: A method of evaluating microwave characteristics includes the steps of: (A) measuring thermal diffusion features and microwave characteristics of at least three mode samples to obtain at least three data points, wherein the mode samples include identical constituents but at different ratios thereof; (B) obtaining a mathematical relation between the data points by linear regression; (C) measuring a thermal diffusion feature of a sample under test, wherein the sample under test and the mode samples include identical constituents; and (D) substituting the thermal diffusion feature of the sample under test into the mathematical relation to evaluate a microwave characteristic of the sample under test. The method is applicable to a ceramic material to evaluate microwave characteristics of the ceramic material.
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: May 2, 2023
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chia-Ting Lin, Jian-Long Ruan
  • Patent number: 11633824
    Abstract: The present invention discloses a grinding cavity body of multiple vibration sources, in which a plurality of ultrasonic vibration sources are disposed, capable of controlling the multi-directional macroscopic medium flow, making benefits to the vibration medium (the abrasive of the slurry) to enter the fine structure of the workpiece to be processed, and to the abrasive to vibrate itself slightly to enhance the performance of abrasive to the workpiece which needs to be ground.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: April 25, 2023
    Assignee: National Chung-Shan Institute of Science and Technology
    Inventors: Po-Shen Lin, Ming-Wei Liu, Chih-Peng Chen, Kuo-Kuang Jen
  • Patent number: 11628539
    Abstract: The present invention discloses a multi-dimensional vibration grinding cavity body. By adjusting amplitudes (power) and frequencies of the multi-dimensional ultrasonic vibration source, such that the multi-directional macroscopic flow is formed in the cavity body while keeping the vibration medium to have the original characteristics to improve the performance of grinding of slurry.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: April 18, 2023
    Assignee: National Chung-Shan Institute of Science and Technology
    Inventors: Po-Shen Lin, Ming-Wei Liu, Chih-Peng Chen, Kuo-Kuang Jen
  • Patent number: 11554506
    Abstract: A device for measuring repeated positioning precision of a robotic arm is introduced. Using an optical speckle three-dimensional displacement sensor developed by the inventor, and with collaboration of an optical speckle image three-dimensional positioning base built with an optical speckle coordinate database and having low thermal expansion, an optical speckle three-dimensional absolute positioning space is established. The optical speckle three-dimensional displacement sensor is installed on an end effector of a robotic arm, the robotic arm is moved to have the optical speckle three-dimensional displacement sensor enter an optical speckle three-dimensional absolute positioning space, an optical speckle image of a positioning point is captured and compared with a coordinate optical speckle image in the optical speckle coordinate database, and current three-dimensional absolute positioning coordinates of the end effector of the robotic arm can be obtained.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: January 17, 2023
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Yi-Yuh Hwang, Li-Chung Liu
  • Patent number: 11485331
    Abstract: A surface adaptation method suitable for a vehicle includes evaluating a plurality of longitudinal forces with respect to a plurality of sampling points, evaluating a plurality of wheel slips with respect to the plurality of sampling points, determining a maximum longitudinal force from the plurality of longitudinal forces, and determining a wheel slip threshold from the plurality of wheel slips. The wheel slip threshold corresponds to the maximum longitudinal force.
    Type: Grant
    Filed: October 13, 2019
    Date of Patent: November 1, 2022
    Assignee: National Chung-Shan Institute of Science and Technology
    Inventors: Ming-Kai Gan, Bo-Chiuan Chen, Shih-Che Chien, Chien-Hao Hsiao, Yu-Sung Hsiao, Feng-Chia Chang
  • Patent number: 11488069
    Abstract: A method for predicting air quality with the aid of machine learning models includes: (A) providing air pollution data to perform an eXtreme Gradient Boosting (XGBoost) regression algorithm for obtaining a XGBoost prediction value; (B) providing the air pollution data to perform a Long Short-Term Memory (LSTM) algorithm for obtaining an LSTM prediction value; (C) combining the air pollution data, the XGBoost prediction value and the LSTM prediction value to generate air pollution combination data; (D) performing an XGBoost classification algorithm to obtain a suggestion for whether to issue an air pollution alert; and (E) performing the XGBoost regression algorithm on the air pollution combination data to obtain an air pollution prediction value. Two layers of machine learning models are built, and a situation where prediction results are too conservative when a single model does not have enough data can be improved.
    Type: Grant
    Filed: November 4, 2018
    Date of Patent: November 1, 2022
    Assignee: National Chung-Shan Institute of Science and Technology
    Inventors: Li-Yen Kuo, Chih-Lun Liao, Chun-Han Tai, Hao-Yu Kao
  • Patent number: 11486052
    Abstract: Provides an electropolishing treatment method for a stainless steel workpiece, wherein the method comprises the following steps: placing the stainless steel workpiece in an oxalic acid solution and performing supersonic oscillation; performing a first electropolishing treatment to the stainless steel workpiece, wherein the first electropolishing treatment uses the stainless steel workpiece as an anode and 10% to 15% perchloric acid as an electrolyte, and when a constant voltage is set as 12V, the first electropolishing treatment procedure is performed; and performing a second electropolishing treatment to the stainless steel workpiece, wherein the second electropolishing treatment uses the stainless steel workpiece after the first electropolishing treatment as an anode, and an electrolyte consists of ethanol, sulfuric acid and perchloric acid, and when a constant voltage is set as 12V, the second electropolishing treatment is performed to obtain the stainless steel workpiece after the second electropolishing
    Type: Grant
    Filed: December 27, 2021
    Date of Patent: November 1, 2022
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chun-Hsiang Kao, Yi-Cherng Ferng, Kuo-Kuang Jen, Shun-Yi Jian, Ming-Hsien Lin, Yu-Chih Tzeng, Chia-Yu Lee