Patents by Inventor Chien-Hung Liu

Chien-Hung Liu 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: 11356012
    Abstract: A transmission and distribution system with electric shock protection function includes a transmitting terminal and a receiving terminal. The transmitting terminal includes a switch, a current measurer, a signal generator, and a controller. The receiving terminal includes a filter. The switch is coupled to a first DC power and a transmission line. The current measurer is coupled to the transmission line, and measures a current of the transmission line and provides a current signal. The signal generator provides a disturbance signal to the transmission line. The controller receives the current signal and controls the switch. If the controller determines that the current signal contains the disturbance signal, the controller turns off the switch.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: June 7, 2022
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Chien-Hung Liu, Yi-Hua Chang
  • Patent number: 11322147
    Abstract: A voice control system for operating machinery mainly comprises: an autonomous reaction device (1) for receiving input of a voice command (11) to establish or perform operation of at least one machining task of a specific set of industrial machinery; an interaction manager (2) for receiving and outputting the voice command (11), the interaction manager (2) including interpreting an acoustic modeling algorithm, and identifying the voice command (11), so as to form an identification instruction (21), and the interpreted identification instruction (21) forming a basic machine control command and/or a machine motion control command corresponding to the operation of multiple machining tasks of the industrial machinery; and an upper controller (3) for receiving the basic machine control command and/or a machine motion control command, and operating a system of a driver (44) of the industrial machinery by voice input.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: May 3, 2022
    Inventor: Chien-Hung Liu
  • Patent number: 11292449
    Abstract: An unmanned ground vehicle (UGV) includes one or more motors configured to drive one or more wheels of the UGV, a memory storing instructions, and a processor coupled to the one or more motors and the memory. The processor is configured to execute the instructions to cause the UGV to determine location information of a movable target; calculate a direction and a speed for the unmanned ground vehicle based on the determined location information; and drive the one or more motors to move the unmanned ground vehicle in the calculated direction at the calculated speed to follow the movable target when the movable target moves.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: April 5, 2022
    Assignee: GEOSAT Aerospace & Technology
    Inventors: Hsin-Yuan Chen, Chien-Hung Liu, Wei-Hao Wang, Yi-Bin Lin, Yi-Chiang Yang
  • Publication number: 20220037874
    Abstract: An external power supply system for spindles is revealed. The external power supply system includes a tool holder, a rectifier circuit, an overvoltage protection circuit. and a buck/boost converter. The tool holder receives an external power source of a spindle while the rectifier circuit converts the external power source into a rectified output signal with a power factor through step-down transformation. The overvoltage protection circuit is used to check whether the rectified output signal is larger than an overvoltage signal for outputting an operating potential or a non-operating potential. The buck/boost converter is used for receiving the rectified output signal with the power factor and converting the rectified output signal to an output voltage according to the power factor. Then the output voltage is provided to a load of a low voltage power supply, a high voltage power supply, or a constant voltage power supply.
    Type: Application
    Filed: July 19, 2021
    Publication date: February 3, 2022
    Inventors: Chien-Hung Liu, Yu-Hung Li
  • Publication number: 20210408253
    Abstract: A method for fabricating a semiconductor device is provided. The method includes depositing a first dielectric layer over a substrate; depositing a sacrificial layer over the first dielectric layer; depositing a second dielectric layer over the sacrificial layer; depositing an erase gate electrode layer over the second dielectric layer; etching a memory hole in the erase gate electrode layer, the sacrificial layer, and the first and second dielectric layers; and forming a semiconductor layer in the memory hole.
    Type: Application
    Filed: June 24, 2020
    Publication date: December 30, 2021
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Kuo-Pin CHANG, Chien-Hung LIU, Chih-Wei HUNG
  • Patent number: 11177084
    Abstract: A key structure includes a keycap, an elastic buffering element, a base plate, a first supporting element, a second supporting element and an elastomer. The elastic buffering element is installed in a locking part of the keycap. The first supporting element is connected with the keycap and the base plate. The keycap is movable upwardly or downwardly relative to the base plate through the first supporting element. A first end of the second supporting element is pivotally coupled to the base plate. A second end of the second supporting element is penetrated through a pivotal hole of the elastic buffering element and a clamping recess of the locking part. The elastomer is arranged between the keycap and the base plate. An inner diameter of the at least one pivotal hole is slightly smaller than an inner diameter of the clamping recess.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: November 16, 2021
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventor: Chien-Hung Liu
  • Patent number: 11177092
    Abstract: A keyboard device includes plural key structures. Each key structure includes a plate assembly, a keycap assembly, an elastic element, a connecting member and a signal generator. The plate assembly includes a membrane switch. The keycap assembly is located over the plate assembly. The elastic element is arranged between the plate assembly and the keycap assembly. The connecting member is arranged between the plate assembly and the keycap assembly. The connecting member includes a triggering part. The signal generator is installed on the plate assembly. While the keycap assembly is moved toward the plate assembly through the connecting member, the triggering part is moved downwardly to trigger the signal generator to generate a first signal. After the signal generator is triggered, the keycap assembly is continuously moved downwardly and the membrane switch is triggered to generate a second signal.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: November 16, 2021
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Chien-Hung Liu, Chin-Sung Pan, Lei-Lung Tsai, Chia-Wei Chang
  • Patent number: 11177083
    Abstract: A key structure includes a keycap, a base plate and a wing-type supporting element. When the keycap is depressed in response to an external force, a first frame and a second frame of the wing-type supporting element are pushed by each other through protrusion structures and rotating shafts. Consequently, the first frame and the second frame can be swung relative to the base plate.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: November 16, 2021
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Ming-Han Wu, Che-Wei Yang, Yi-Wei Chen, Chien-Hung Liu, Lei-Lung Tsai
  • Publication number: 20210351690
    Abstract: A transmission and distribution system with electric shock protection function includes a transmitting terminal and a receiving terminal. The transmitting terminal includes a switch, a current measurer, a signal generator, and a controller. The receiving terminal includes a filter. The switch is coupled to a first DC power and a transmission line. The current measurer is coupled to the transmission line, and measures a current of the transmission line and provides a current signal. The signal generator provides a disturbance signal to the transmission line. The controller receives the current signal and controls the switch. If the controller determines that the current signal contains the disturbance signal, the controller turns off the switch.
    Type: Application
    Filed: August 3, 2020
    Publication date: November 11, 2021
    Inventors: Chien-Hung LIU, Yi-Hua CHANG
  • Patent number: 11145474
    Abstract: A keyboard device includes plural key structures. Each key structure includes a supporting plate, a keycap, a connecting member and a hook element. The keycap is located over the supporting plate, and movable upwardly or downwardly relative to the supporting plate. The connecting member is connected between the supporting plate and the keycap. The hook element is installed on the supporting plate. The connecting member is connected with the supporting plate through the hook element. The supporting plate is made of a first material with a first specific gravity. The hook element is made of a second material with a second specific gravity. The second specific gravity is higher than the first specific gravity.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: October 12, 2021
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Chin-Sung Pan, Chien-Hung Liu, Lei-Lung Tsai, Sheng-Fan Chang, Tsu-Yi Chen, Chun-Yuan Liu
  • Patent number: 11143757
    Abstract: An environment detection method includes the following steps is provided. Firstly, an ultrasonic wave is emitted to a first reflecting cone by an ultrasonic transmitter, wherein the ultrasonic wave is reflected to the environment by the first reflecting cone in a full circumferential direction. Then, the ultrasonic waves reflected back from a second reflecting cone is received by an ultrasonic receiver. Then, a received signal waveform received by the ultrasonic receiver is recorded by a controller.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: October 12, 2021
    Inventor: Chien-Hung Liu
  • Patent number: 11145475
    Abstract: A keyboard device includes plural key structures. Each key structure includes a plate assembly, a keycap, a connecting member and a buffering element. The plate assembly has a hollow region. The keycap is located over the plate assembly. The connecting member is connected between the keycap and the plate assembly. The keycap is connected with the connecting member through at least one hook of the keycap. The keycap is movable upwardly or downwardly relative to the plate assembly through the connecting member. The buffering element is installed on the plate assembly. The buffering element is extended in a direction toward the keycap and penetrated through the hollow region of the plate assembly. While the keycap is moved downwardly and the at least one hook of the keycap is contacted with the buffering element, there is the gap between the keycap and the plate assembly.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: October 12, 2021
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Ming-Han Wu, Che-Wei Yang, Yi-Wei Chen, Chien-Hung Liu, Chen-Hsuan Hsu
  • Publication number: 20210288059
    Abstract: An integrated circuit (IC) includes a semiconductor-on-insulator (SOI) substrate comprising a handle substrate, an insulator layer over the handle substrate, and a semiconductor device layer over the insulator layer. A logic device includes a logic gate arranged over the semiconductor device layer. The logic gate is arranged within a high ? dielectric layer. A memory cell includes a control gate and a select gate laterally adjacent to one another and arranged over the semiconductor device layer. A charge-trapping layer underlies the control gate.
    Type: Application
    Filed: June 2, 2021
    Publication date: September 16, 2021
    Inventors: Chien Hung Liu, Chih-Wei Hung
  • Publication number: 20210202705
    Abstract: A semiconductor device includes a substrate, a gate structure disposed over the substrate, a drain structure disposed in the substrate, and a source structure disposed in the substrate on an n opposite side of the gate structure from the drain structure. The substrate includes a first semiconductor layer, a second semiconductor layer over the first semiconductor layer, and an insulating layer sandwiched between the first semiconductor layer and the second semiconductor layer. The source structure and the drain structure include a same conductivity type. The source structure includes at least an epitaxial layer. The source structure extends deeper into the substrate than the drain structure.
    Type: Application
    Filed: March 14, 2021
    Publication date: July 1, 2021
    Inventor: CHIEN HUNG LIU
  • Patent number: 11037949
    Abstract: An integrated circuit (IC) includes a semiconductor-on-insulator (SOI) substrate comprising a handle substrate, an insulator layer over the handle substrate, and a semiconductor device layer over the insulator layer. A logic device includes a logic gate arranged over the semiconductor device layer. The logic gate is arranged within a high ? dielectric layer. A memory cell includes a control gate and a select gate laterally adjacent to one another and arranged over the semiconductor device layer. A charge-trapping layer underlies the control gate.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: June 15, 2021
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chien Hung Liu, Chih-Wei Hung
  • Publication number: 20210167156
    Abstract: A display substrate and a manufacture method thereof, a display device are disclosed. The display substrate includes a base substrate, a thin film transistor on the base substrate and a light shielding layer on the base substrate. The light shielding layer includes a first light shielding layer and a second light shielding layer that are stacked; an orthographic projection of an active layer of the thin film transistor on the base substrate is within an orthogonal projection of the light shielding layer on the base substrate, and the second light shielding layer includes nanoparticles capable of absorbing light in a specific wavelength range.
    Type: Application
    Filed: December 5, 2017
    Publication date: June 3, 2021
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xuefei SUN, Zhengliang LI, Bin ZHANG, Yu-Cheng CHAN, Chien Hung LIU
  • Publication number: 20210151050
    Abstract: A voice control system for operating machinery mainly comprises: an autonomous reaction device (1) for receiving input of a voice command (11) to establish or perform operation of at least one machining task of a specific set of industrial machinery; an interaction manager (2) for receiving and outputting the voice command (11), the interaction manager (2) including interpreting an acoustic modeling algorithm, and identifying the voice command (11), so as to form an identification instruction (21), and the interpreted identification instruction (21) forming a basic machine control command and/or a machine motion control command corresponding to the operation of multiple machining tasks of the industrial machinery; and an upper controller (3) for receiving the basic machine control command and/or a machine motion control command, and operating a system of a driver (44) of the industrial machinery by voice input.
    Type: Application
    Filed: July 30, 2018
    Publication date: May 20, 2021
    Inventor: Chien-Hung Liu
  • Publication number: 20210098475
    Abstract: Various embodiments of the present application are directed to an integrated circuit (IC) comprising a memory cell with a large operation window and a high erase speed. In some embodiments, the IC comprises a semiconductor substrate and a memory cell. The memory cell comprises a control gate electrode, a select gate electrode, a charge trapping layer, and a common source/drain region. The common source/drain is defined by the semiconductor substrate and is n-type. The control gate electrode and the select gate electrode overlie the semiconductor substrate and are respectively on opposite sides of the common source/drain. Further, the control gate electrode overlies the charge trapping layer and comprises a metal with a p-type work function. In some embodiments, the select gate electrode comprises a metal with an n-type work function.
    Type: Application
    Filed: December 10, 2020
    Publication date: April 1, 2021
    Inventors: Yun-Chi Wu, Cheng-Bo Shu, Chien Hung Liu
  • Patent number: 10950703
    Abstract: A semiconductor device includes a substrate, a gate structure disposed over the substrate, a drain structure disposed in the substrate, and a source structure disposed in the substrate on an n opposite side of the gate structure from the drain structure. The substrate includes a first semiconductor layer, a second semiconductor layer over the first semiconductor layer, and an insulating layer sandwiched between the first semiconductor layer and the second semiconductor layer. The source structure and the drain structure include a same conductivity type. The source structure includes at least an epitaxial layer. The source structure extends deeper into the substrate than the drain structure.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: March 16, 2021
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventor: Chien Hung Liu
  • Publication number: 20210074715
    Abstract: A method of forming a memory device is provided. The method comprises: forming a first storage portion on a substrate; forming a conductive layer on the first storage portion, wherein the conductive layer has a first surface coupled to the first storage portion; and forming a second storage portion on a second surface of the conductive layer, wherein the second surface is opposite to the first surface.
    Type: Application
    Filed: November 16, 2020
    Publication date: March 11, 2021
    Inventor: CHIEN HUNG LIU