Patents by Inventor Chih-Jung Yeh

Chih-Jung Yeh 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: 20240072129
    Abstract: A structure of flash memory cell includes a substrate. A floating gate is disposed on the substrate. A low dielectric constant (low-K) spacer is disposed on a sidewall of the floating gate. A trench isolation structure has a base part disposed in the substrate and a protruding part above the substrate protruding from the base part. The low-K spacer is sandwiched between the floating gate and the protruding part of the trench isolation structure.
    Type: Application
    Filed: November 8, 2023
    Publication date: February 29, 2024
    Applicant: United Microelectronics Corp.
    Inventors: Chih-Jung Chen, Yu-Jen Yeh
  • Publication number: 20240071758
    Abstract: A method for fabricating a high electron mobility transistor (HEMT) includes the steps of forming a buffer layer on a substrate, forming a barrier layer on the buffer layer, forming a p-type semiconductor layer on the barrier layer, forming a gate electrode layer on the p-type semiconductor layer, and patterning the gate electrode layer to form a gate electrode. Preferably, the gate electrode includes an inclined sidewall.
    Type: Application
    Filed: September 23, 2022
    Publication date: February 29, 2024
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventors: Chih-Tung Yeh, You-Jia Chang, Bo-Yu Chen, Yun-Chun Wang, Ruey-Chyr Lee, Wen-Jung Liao
  • Patent number: 10421492
    Abstract: An assisted steering system with vibrational function for vehicles is applied to a steering system of a vehicle. The steering system has a first steering column and a second steering column, and the assisted steering system includes a speed-adjustable steering device and an electronic control unit. The speed-adjustable steering device is connected between the first steering column and the second steering column and has a motor. The electronic control unit is electrically connected to the motor, generates a vibration driving current when receiving a warning command, combines a steering driving current with the vibration driving current to generate a motor control current, and outputs the motor control current to the motor of the speed-adjustable steering device to excite windings of the motor with the vibration driving current in generation of a vibrational effect.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: September 24, 2019
    Assignee: Automotive Research & Testing Center
    Inventors: Jin-Yan Hsu, Tong-Kai Jhang, Chih-Jung Yeh
  • Publication number: 20180186400
    Abstract: An assisted steering system with vibrational function for vehicles is applied to a steering system of a vehicle. The steering system has a first steering column and a second steering column, and the assisted steering system includes a speed-adjustable steering device and an electronic control unit. The speed-adjustable steering device is connected between the first steering column and the second steering column and has a motor. The electronic control unit is electrically connected to the motor, generates a vibration driving current when receiving a warning command, combines a steering driving current with the vibration driving current to generate a motor control current, and outputs the motor control current to the motor of the speed-adjustable steering device to excite windings of the motor with the vibration driving current in generation of a vibrational effect.
    Type: Application
    Filed: December 29, 2016
    Publication date: July 5, 2018
    Inventors: Jin-Yan Hsu, Tong-Kai Jhang, Chih-Jung Yeh
  • Patent number: 9789900
    Abstract: A modular steering system is adapted to be installed in a vehicle. The vehicle includes a steering column. The modular steering system includes an input unit, a first output unit, and a second output unit. The input unit includes an input shaft that extends along a first axis, that is adapted to be connected to the steering column, and that is adapted to be driven rotatably by the steering column about the first axis. The first output unit includes a first output shaft that extends along and is rotatable about a second axis parallel to the first axis. The second output unit includes a second output shaft that extends along and is rotatable about a third axis. The second axis and the third axis cooperatively define an angle therebetween.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: October 17, 2017
    Assignee: Automotive Research & Testing Center
    Inventors: Hsien-Yu Kuo, Chih-Jung Yeh
  • Publication number: 20170190351
    Abstract: A modular steering system is adapted to be installed in a vehicle. The vehicle includes a steering column. The modular steering system includes an input unit, a first output unit, and a second output unit. The input unit includes an input shaft that extends along a first axis, that is adapted to be connected to the steering column, and that is adapted to be driven rotatably by the steering column about the first axis. The first output unit includes a first output shaft that extends along and is rotatable about a second axis parallel to the first axis. The second output unit includes a second output shaft that extends along and is rotatable about a third axis. The second axis and the third axis cooperatively define an angle therebetween.
    Type: Application
    Filed: December 30, 2015
    Publication date: July 6, 2017
    Inventors: Hsien-Yu Kuo, Chih-Jung Yeh
  • Patent number: 9533545
    Abstract: An electric vehicle thermal management system includes a dynamic heat dissipating unit, an air conditioner unit, a heat exchange unit, and a control unit. The heat exchange unit is connected to the dynamic heat dissipating unit and the air conditioner unit for transferring heat therebetween. The control unit adjusts the flow rate of a coolant in the dynamic heat dissipating unit for controlling and adjusting the heat dissipating ability of the dynamic heat dissipating unit to meet the heat dissipation of the system, thereby improving distribution and management of heat energy in the system.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: January 3, 2017
    Assignee: Automotive Research & Testing Center
    Inventors: Liang-Cheng Chang, Hong-Chi Wang, Chih-Jung Yeh, Shih-Jung Ho
  • Patent number: 9061564
    Abstract: An active vehicle with variable inclination mechanism is provided. The active vehicle with variable inclination mechanism comprises a linear slide mechanism, two sets of longitudinal interlocking mechanism, a steering control mechanism, and a control unit. The linear slide mechanism comprises a reciprocating action member. A lateral displacement of the reciprocating action member drives the longitudinal interlocking mechanism to produce a displacement along a longitudinal direction while a torque is applied at the steering control mechanism. The wheels are driven to move along an opposite longitudinal direction and to form an inclination. Using the active vehicle with variable inclination mechanism can provide a real-time inclination force while rounding a corner as well as increase the safety. Besides, the driver can easily get on/off the vehicle when the vehicle is stationary and the reciprocating action member is locked at the stationary position of the vehicle.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: June 23, 2015
    Assignee: Automotive Research & Testing Center
    Inventors: Chao-Chih Yu, Chih-Jung Yeh, Jin-Yan Hsu, Jiun-Jie Chen, Shih-Jung Ho
  • Publication number: 20150165855
    Abstract: An active vehicle with variable inclination mechanism is provided. The active vehicle with variable inclination mechanism comprises a linear slide mechanism, two sets of longitudinal interlocking mechanism, a steering control mechanism, and a control unit. The linear slide mechanism comprises a reciprocating action member. A lateral displacement of the reciprocating action member drives the longitudinal interlocking mechanism to produce a displacement along a longitudinal direction while a torque is applied at the steering control mechanism. The wheels are driven to move along an opposite longitudinal direction and to form an inclination. Using the active vehicle with variable inclination mechanism can provide a real-time inclination force while rounding a corner as well as increase the safety. Besides, the driver can easily get on/off the vehicle when the vehicle is stationary and the reciprocating action member is locked at the stationary position of the vehicle.
    Type: Application
    Filed: December 18, 2013
    Publication date: June 18, 2015
    Applicant: Automotive Research & Testing Center
    Inventors: Chao-Chih YU, Chih-Jung YEH, Jin-Yan HSU, Jiun-Jie CHEN, Shih-Jung HO
  • Publication number: 20150121922
    Abstract: An electric vehicle thermal management system includes a dynamic heat dissipating unit, an air conditioner unit, a heat exchange unit, and a control unit. The heat exchange unit is connected to the dynamic heat dissipating unit and the air conditioner unit for transferring heat therebetween. The control unit adjusts the flow rate of a coolant in the dynamic heat dissipating unit for controlling and adjusting the heat dissipating ability of the dynamic heat dissipating unit to meet the heat dissipation of the system, thereby improving distribution and management of heat energy in the system.
    Type: Application
    Filed: December 27, 2013
    Publication date: May 7, 2015
    Applicant: Automotive Research & Testing Center
    Inventors: Liang-Cheng Chang, Hong-Chi Wang, Chih-Jung Yeh, Shih-Jung Ho
  • Patent number: 8941375
    Abstract: A contactless detection apparatus has a first magnet ring, a second magnet ring, a first magnetic sensor, a second magnetic sensor and a controller. The two magnet rings are respectively mounted on two ends of a torsion shaft. When the torsion shaft rotates, the controller detects the magnetic fields of the two magnet rings through the two magnetic sensors. The controller calculates a twisting torque exerted on the torsion shaft and a rotational angle of the torsion shaft according to the detected magnetic fields at the same time. The detection apparatus of the invention has simple structure. The magnetic fields of both magnet rings do not interfere with each other, such that the detection result of the invention is accurate.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: January 27, 2015
    Assignee: Automotive Research & Testing Center
    Inventors: Chau-Chih Yu, Tsung-Hua Hsu, Jin-Yan Hsu, Chih-Jung Yeh
  • Patent number: 8914194
    Abstract: A stimulus-based steering sensor device and a method for the same are disclosed. The sensor device comprises at least one driving wheel, a processor, two driven wheels, and two resolvers. The processor generates a stimulus signal and has a signal-angle lookup table. The driving wheel contacts two driven wheels. When following the rotation of a steering column, the driving wheel drives two driven wheels to rotate at different speeds. Two resolvers connect with the processor, respectively engage with two driven wheels, receive the stimulus signal, and respectively output two first sinusoidal signals to the processor according to the rotational speeds of two driven wheels. The processor analyzes two first sinusoidal signals to obtain two second sinusoidal signals having different periods, and uses the second sinusoidal signals and the signal-angle lookup table to obtain a first absolute angle value of the rotation of the steering wheel.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: December 16, 2014
    Assignee: Automotive Research & Test Center
    Inventors: Jin-Yan Hsu, Tsung-Hua Hsu, Chau-Chih Yu, Tsung-Hsien Hu, Chih-Jung Yeh
  • Publication number: 20140159710
    Abstract: A contactless detection apparatus has a first magnet ring, a second magnet ring, a first magnetic sensor, a second magnetic sensor and a controller. The two magnet rings are respectively mounted on two ends of a torsion shaft. When the torsion shaft rotates, the controller detects the magnetic fields of the two magnet rings through the two magnetic sensors. The controller calculates a twisting torque exerted on the torsion shaft and a rotational angle of the torsion shaft according to the detected magnetic fields at the same time. The detection apparatus of the invention has simple structure. The magnetic fields of both magnet rings do not interfere with each other, such that the detection result of the invention is accurate.
    Type: Application
    Filed: December 7, 2012
    Publication date: June 12, 2014
    Applicant: Automotive Research & Testing Center
    Inventors: Chau-Chih YU, Tsung-Hua HSU, Jin-Yan HSU, Chih-Jung YEH
  • Patent number: 8677836
    Abstract: A torque sensor includes a driving rod, a driving body connected fixedly to the driving rod, and a driving block extending from the driving body and having two opposite pushing surfaces, a driven body permitting the driving body to rotate relative thereto as a result of application of a torque to the driving rod, a driven rod extending from the driven body, and a block-receiving groove formed in the driven body. A first measuring module is connected to the driving block. A second measuring module is connected to the driven body, and cooperates with the first measuring module so as to measure the torque. Two resilient members flank the driving block. Each of the resilient members is disposed between and abuts against the corresponding pushing surface and the driven body.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: March 25, 2014
    Assignee: Automotive Research & Testing Center
    Inventors: Chau-Chih Yu, Tsung-Hsien Hu, Chih-Jung Yeh
  • Publication number: 20130332031
    Abstract: A stimulus-based steering sensor device and a method for the same are disclosed. The sensor device comprises at least one driving wheel, a processor, two driven wheels, and two resolvers. The processor generates a stimulus signal and has a signal-angle lookup table. The driving wheel contacts two driven wheels. When following the rotation of a steering column, the driving wheel drives two driven wheels to rotate at different speeds. Two resolvers connect with the processor, respectively engage with two driven wheels, receive the stimulus signal, and respectively output two first sinusoidal signals to the processor according to the rotational speeds of two driven wheels. The processor analyzes two first sinusoidal signals to obtain two second sinusoidal signals having different periods, and uses the second sinusoidal signals and the signal-angle lookup table to obtain a first absolute angle value of the rotation of the steering wheel.
    Type: Application
    Filed: August 6, 2012
    Publication date: December 12, 2013
    Inventors: Jin-Yan HSU, Tsung-Hua HSU, Chau-Chih YU, Tsung-Hsien HU, Chih-Jung Yeh
  • Patent number: 8604647
    Abstract: A linear actuating device includes a track unit having an insulating sleeve made of non-metallic material and surrounding an axis, a plurality of coils mounted spacedly and sleevingly on the insulating sleeve along the axis, and a shell containing the insulating sleeve and the coils. The linear actuating device also includes a forcer unit having an elongate member extending through the insulating sleeve, having a segment configured for connecting to a vehicle shaft, and being movable along the axis relative to the insulating sleeve. The forcer unit also includes a plurality of magnets mounted spacedly relative to the axis and sleevingly on the elongate member.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: December 10, 2013
    Assignee: Automotive Research & Testing Center
    Inventors: Tsung-Hsien Hu, Chih-Jung Yeh
  • Patent number: 8483913
    Abstract: The present invention discloses a self-calibration method for an electric power steering system, which can self-calibrate the sensors to a normalized state to prevent from signal distortion, whereby to maintain stable steering sense of the driver and promote robustness and performance of the EPS system. The self-calibration method includes a signal offset compensation tactic and a zero-point signal self-calibration tactic. The present invention determines whether to undertake self-calibration according to judgement tactics, including a sensor power supply judgement tactic, a sensor correctness judgement tactic, and a self-calibration triggering condition. The self-calibration method can increase the correctness of sensors, maintain the original steering-assisting function and promote robustness of the EPS system.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: July 9, 2013
    Assignee: Automotive Research & Test Center
    Inventors: Jin-Yan Hsu, Chih-Jung Yeh, Tsung-Hsien Hu, Hsien-Chang Chiu
  • Publication number: 20130160569
    Abstract: A torque sensor includes a driving rod, a driving body connected fixedly to the driving rod, and a driving block extending from the driving body and having two opposite pushing surfaces, a driven body permitting the driving body to rotate relative thereto as a result of application of a torque to the driving rod, a driven rod extending from the driven body, and a block-receiving groove formed in the driven body. A first measuring module is connected to the driving block. A second measuring module is connected to the driven body, and cooperates with the first measuring module so as to measure the torque. Two resilient members flank the driving block. Each of the resilient members is disposed between and abuts against the corresponding pushing surface and the driven body.
    Type: Application
    Filed: December 23, 2011
    Publication date: June 27, 2013
    Inventors: Chau-Chih Yu, Tsung-Hsien Hu, Chih-Jung Yeh
  • Patent number: 8393232
    Abstract: A torque detector includes an output body, an input body adapted to permit a torque to be applied thereto, a torque beam unit, and a detecting unit disposed between the input and output bodies for converting a relative rotation of the input and output bodies into an electric signal. The torque beam unit includes a shaft, at least one flexible first beam extending radially and outwardly from the shaft and having a proximate end portion connected to the shaft, and a distal end portion connected to and co-rotatable with the output body, and at least one second flexible beam extending radially and outwardly from the shaft in a direction different from that of the first beam and having a proximate end portion connected to the shaft, and a distal end portion connected to and co-rotatable with the input body.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: March 12, 2013
    Assignee: Automotive Research & Testing Center
    Inventors: Tsung-Hsien Hu, Chau-Chih Yu, Chih-Jung Yeh
  • Publication number: 20120242173
    Abstract: A linear actuating device includes a track unit having an insulating sleeve made of non-metallic material and surrounding an axis, a plurality of coils mounted spacedly and sleevingly on the insulating sleeve along the axis, and a shell containing the insulating sleeve and the coils. The linear actuating device also includes a forcer unit having an elongate member extending through the insulating sleeve, having a segment configured for connecting to a vehicle shaft, and being movable along the axis relative to the insulating sleeve. The forcer unit also includes a plurality of magnets mounted spacedly relative to the axis and sleevingly on the elongate member.
    Type: Application
    Filed: March 21, 2011
    Publication date: September 27, 2012
    Applicant: AUTOMOTIVE RESEARCH & TESTING CENTER
    Inventors: Tsung-Hsien Hu, Chih-Jung Yeh