Patents by Inventor Chang-Cheng Liu

Chang-Cheng 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).

  • Publication number: 20240113198
    Abstract: A method of fabricating a device includes providing a plurality of fins extending from a substrate. In some embodiments, each fin of the plurality of fins includes a plurality of semiconductor channel layers. In various example, the method further includes performing an ion implantation process into a first fin of the plurality of fins to introduce a dopant species into a topmost semiconductor channel layer of the plurality of semiconductor channel layers of the first fin. In some embodiments, the ion implantation process deactivates the topmost semiconductor channel layer of the plurality of semiconductor channel layers of the first fin.
    Type: Application
    Filed: January 19, 2023
    Publication date: April 4, 2024
    Inventors: Ko-Cheng LIU, Chang-Miao LIU
  • Patent number: 11943373
    Abstract: An identity certificate may be issued to a blockchain node. The issuance may include issuing a first identity certificate to a first terminal and receiving a second identity certificate issuance request that is from the first terminal. A second identity certificate may be issued to the first terminal, and a third identity certificate issuance request is received from the second terminal. A third identity certificate is issued to the second terminal, so that the second terminal forwards the third identity certificate to the third terminal.
    Type: Grant
    Filed: June 2, 2021
    Date of Patent: March 26, 2024
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Mao Cai Li, Zong You Wang, Kai Ban Zhou, Chang Qing Yang, Hu Lan, Li Kong, Jin Song Zhang, Yi Fang Shi, Geng Liang Zhu, Qu Cheng Liu, Qiu Ping Chen
  • Patent number: 11223141
    Abstract: A planar antenna module includes a plurality of planar antennas, a first transmission line electrically connected to the planar antennas, and at least one gain enhancement structure formed on the first transmission line. Each gain enhancement structure has a plurality of toothed portions spaced apart. With the design of the gain enhancement structure, the gain of the planar antenna module could be enhanced.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: January 11, 2022
    Assignee: ACCTON TECHNOLOGY CORPORATION
    Inventor: Chang-Cheng Liu
  • Publication number: 20200083615
    Abstract: A planar antenna module includes a plurality of planar antennas, a first transmission line electrically connected to the planar antennas, and at least one gain enhancement structure formed on the first transmission line. Each gain enhancement structure has a plurality of toothed portions spaced apart. With the design of the gain enhancement structure, the gain of the planar antenna module could be enhanced.
    Type: Application
    Filed: July 8, 2019
    Publication date: March 12, 2020
    Applicant: ACCTON TECHNOLOGY CORPORATION
    Inventor: CHANG-CHENG LIU
  • Patent number: 10498034
    Abstract: An antenna module is disclosed. The antenna module includes a circuit board and at least one antenna set. Wherein, the antenna set includes a driving antenna and a plurality of parasitic antennas. The driving antenna is formed on the circuit board, and the parasitic antennas are positioned with the driving antenna as a center on the circuit board. Whereby, the space occupied by the antenna module can be small, and beams of wireless signals radiated by the antenna module can be controlled.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: December 3, 2019
    Assignee: ACCTON TECHNOLOGY CORPORATION
    Inventors: I-Ru Liu, Yen-Lin Liao, Hsin-Hsiung Kang, Li-Hua Chou, Wen-Pin Lo, Chun-Yi Kuo, Chang-Cheng Liu
  • Patent number: 10411352
    Abstract: The present invention discloses an antenna tuning system and method thereof. The method comprises the following steps: choosing a parasitic antenna that combined with a main antenna, the strongest received signal strength indicator of a target station is detected; controlling the selected parasitic antenna that combined with a main antenna, to generate a scattering resonance through turning on or off a switch unit; and controlling a diffraction radiation pattern between the main antenna and the selected parasitic antenna through adjusting a load of a designed circuit.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: September 10, 2019
    Assignee: ACCTON TECHNOLOGY CORPORATION
    Inventors: I-Ru Liu, Wen-Pin Lo, Hsin-Hsiung Kang, Yang-Te Fu, Chang-Cheng Liu, Yen-Lin Liao, Yi-Chang Chen, Li-Hua Chou
  • Publication number: 20180301810
    Abstract: An antenna module is disclosed. The antenna module includes a circuit board and at least one antenna set. Wherein, the antenna set includes a driving antenna and a plurality of parasitic antennas. The driving antenna is formed on the circuit board, and the parasitic antennas are positioned with the driving antenna as a center on the circuit board. Whereby, the space occupied by the antenna module can be small, and beams of wireless signals radiated by the antenna module can be controlled.
    Type: Application
    Filed: June 23, 2017
    Publication date: October 18, 2018
    Applicant: ACCTON TECHNOLOGY CORPORATION
    Inventors: I-Ru LIU, Yen-Lin LIAO, Hsin-Hsiung KANG, Li-Hua CHOU, Wen-Pin LO, Chun-Yi KUO, Chang-Cheng LIU
  • Patent number: 10090591
    Abstract: An antenna system comprises first and second support structures, and a plurality of first, second and third antenna elements. Each of the first and second support structures has four sides. Two adjacent sides are perpendicular to each other so that both the first and second support structures form a closed loop. The first support structure is disposed outside of and surrounds the second support structure. Some first antenna elements are disposed on two symmetric sides of the first support structure, and other first antenna elements are disposed on two symmetric sides of the second support structure. Some second antenna elements are disposed on another two symmetric sides of the first support structure, and the other first antenna elements are disposed on another two symmetric sides of the second support structure. The third antenna elements are disposed on the four sides of the second support structure.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: October 2, 2018
    Assignee: ACCTON TECHNOLOGY CORPORATION
    Inventors: I-Ru Liu, Yang-Te Fu, Chang-Cheng Liu, Yi-Chang Chen, Yu-Fang Wei
  • Patent number: 10084237
    Abstract: An inverted-F antenna includes a ground portion, a connecting portion, and a radiating portion, wherein the ground portion is adapted to be electrically connected to a ground line; the connecting portion is respectively connected to the ground portion and the radiating portion to respectively form two included angles therebetween; the radiating portion is separated from the ground portion by a distance due to the connecting portion; the radiating portion has a transceiving segment and a feed-in segment which are mutually connected, wherein the transceiving segment receives and transmits wireless signals in a specific frequency band, while the feed-in segment is adapted to be electrically connected to a signal line; a first notch and a second notch are formed on a side of the transceiving segment, wherein the feed-in segment extends from a portion between the first and the second notches. Whereby, the inverted-F antenna provides an omnidirectional radiation effect.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: September 25, 2018
    Assignee: ACCTON TECHNOLOGY CORPORATION
    Inventors: Chang-Cheng Liu, I-Ru Liu
  • Patent number: 10028547
    Abstract: A method is provided for integrally forming a flip-flop shoe including a sole, a vamp having a toe slot, and a rib interconnected between the sole and the vamp. A sole cavity is defined between middle and lower molds. A vamp cavity is defined between upper and middle molds. An insertion block on the upper mold is received in a slot of the middle mold and corresponds to the toe slot. A rib cavity is defined between an end of the slot and the insertion block and intercommunicates with the sole cavity and the vamp cavity. Molten plastic material is filled into the sole cavity, the vamp cavity, and the rib cavity to form an integral flip-flop shoe including the sole, the vamp, the rib, and the toe slot. The upper and lower molds are then opened, and the integral flip-flop shoe is removed from the middle mold.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: July 24, 2018
    Inventor: Chang-Cheng Liu
  • Publication number: 20180175503
    Abstract: The present invention discloses an antenna tuning system and method thereof. The method comprises the following steps: choosing a parasitic antenna that combined with a main antenna, the strongest received signal strength indicator of a target station is detected; controlling the selected parasitic antenna that combined with a main antenna, to generate a scattering resonance through turning on or off a switch unit; and controlling a diffraction radiation pattern between the main antenna and the selected parasitic antenna through adjusting a load of a designed circuit.
    Type: Application
    Filed: June 19, 2017
    Publication date: June 21, 2018
    Inventors: I-Ru LIU, Wen-Pin LO, Hsin-Hsiung KANG, Yang-Te FU, Chang-Cheng LIU, Yen-Lin LIAO, Yi-Chang CHEN, Li-Hua CHOU
  • Patent number: 10003127
    Abstract: An antenna system includes a skeleton, several first antenna components, several second antenna components, and several isolators. The first antenna components and the second antenna components are alternately arranged along edges of the skeleton and are spaced apart from each other. An operation band of the first antenna components is different from an operation band of the second antenna components. The isolators are arranged on the skeleton in a criss-cross and interlaced manner and surrounded by the first antenna components and the second antenna components. The isolators are configured to avoid signal interference between the first antenna components and the second antenna components.
    Type: Grant
    Filed: August 21, 2016
    Date of Patent: June 19, 2018
    Assignee: ACCTON TECHNOLOGY CORPORATION
    Inventors: I-Ru Liu, Chang-Cheng Liu
  • Patent number: 9958591
    Abstract: A backlight module includes a light guide plate having a bottom surface, a light emitting surface, a first light incident surface, and microstructures. Each microstructure recesses into or protrudes from the bottom surface and has a first and a second surfaces. The first and the second surfaces of at least one of the microstructures are located on two sides of a first reference plane parallel to the first light incident surface. A section-line of each first surface on a second reference plane perpendicular to the first light incident surface and perpendicular to the light emitting surface is a straight line. A first angle between each first surface and a third reference plane parallel to the light emitting surface in the light guide plate is between 0 degrees and 20 degrees, and a thickness of each microstructure is between 0 micrometers and 20 micrometers.
    Type: Grant
    Filed: February 2, 2015
    Date of Patent: May 1, 2018
    Assignee: Young Lighting Technology Inc.
    Inventors: Chien-Hui Lee, Min-Chun Chou, Ming-Dah Liu, Ching-Hsiang Li, Chang-Cheng Liu, Wen-Yen Chiu
  • Publication number: 20170310014
    Abstract: An antenna system comprises first and second support structures, and a plurality of first, second and third antenna elements. Each of the first and second support structures has four sides. Two adjacent sides are perpendicular to each other so that both the first and second support structures form a closed loop. The first support structure is disposed outside of and surrounds the second support structure. Some first antenna elements are disposed on two symmetric sides of the first support structure, and other first antenna elements are disposed on two symmetric sides of the second support structure. Some second antenna elements are disposed on another two symmetric sides of the first support structure, and the other first antenna elements are disposed on another two symmetric sides of the second support structure. The third antenna elements are disposed on the four sides of the second support structure.
    Type: Application
    Filed: July 11, 2016
    Publication date: October 26, 2017
    Inventors: I-Ru LIU, Yang-Te FU, Chang-Cheng LIU, Yi-Chang CHEN, Yu-Fang WEI
  • Publication number: 20170271759
    Abstract: An antenna system includes a skeleton, several first antenna components, several second antenna components, and several isolators. The first antenna components and the second antenna components are alternately arranged along edges of the skeleton and are spaced apart from each other. An operation band of the first antenna components is different from an operation band of the second antenna components. The isolators are arranged on the skeleton in a criss-cross and interlaced manner and surrounded by the first antenna components and the second antenna components. The isolators are configured to avoid signal interference between the first antenna components and the second antenna components.
    Type: Application
    Filed: August 21, 2016
    Publication date: September 21, 2017
    Inventors: I-Ru LIU, Chang-Cheng LIU
  • Patent number: 9735476
    Abstract: The present invention discloses an antenna apparatus. The antenna apparatus includes a first antenna array and a second antenna array. The first antenna array includes multiple first radiating elements for transmitting radio signals of a first frequency. The second antenna array includes multiple second radiating elements for transmitting radio signals of a second frequency, wherein the first and second radiating elements are arranged in a staggered manner; wherein each of the first radiating elements is disposed between two of the second radiating elements; and wherein each of the second radiating elements is disposed between two of the first radiating elements.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: August 15, 2017
    Assignee: ACCTON TECHNOLOGY CORPORATION
    Inventors: I-Ru Liu, Chih-Chang Hsieh, Yi-Chang Chen, Yang-Te Fu, Chang-Cheng Liu, Chun-Teng Hsu
  • Publication number: 20170214141
    Abstract: An inverted-F antenna includes a ground portion, a connecting portion, and a radiating portion, wherein the ground portion is adapted to be electrically connected to a ground line; the connecting portion is respectively connected to the ground portion and the radiating portion to respectively form two included angles therebetween; the radiating portion is separated from the ground portion by a distance due to the connecting portion; the radiating portion has a transceiving segment and a feed-in segment which are mutually connected, wherein the transceiving segment receives and transmits wireless signals in a specific frequency band, while the feed-in segment is adapted to be electrically connected to a signal line; a first notch and a second notch are formed on a side of the transceiving segment, wherein the feed-in segment extends from a portion between the first and the second notches. Whereby, the inverted-F antenna provides an omnidirectional radiation effect.
    Type: Application
    Filed: May 27, 2016
    Publication date: July 27, 2017
    Applicant: ACCTON TECHNOLOGY CORPORATION
    Inventors: CHANG-CHENG LIU, I-RU LIU
  • Publication number: 20160331062
    Abstract: A method is provided for integrally forming a flip-flop shoe including a sole, a vamp having a toe slot, and a rib interconnected between the sole and the vamp. A sole cavity is defined between middle and lower molds. A vamp cavity is defined between upper and middle molds. An insertion block on the upper mold is received in a slot of the middle mold and corresponds to the toe slot. A rib cavity is defined between an end of the slot and the insertion block and intercommunicates with the sole cavity and the vamp cavity. Molten plastic material is filled into the sole cavity, the vamp cavity, and the rib cavity to form an integral flip-flop shoe including the sole, the vamp, the rib, and the toe slot. The upper and lower molds are then opened, and the integral flip-flop shoe is removed from the middle mold.
    Type: Application
    Filed: February 2, 2016
    Publication date: November 17, 2016
    Inventor: Chang-Cheng Liu
  • Patent number: 9429700
    Abstract: A backlight module including an LGP, an optical film, a first light source is provided. The LGP has a bottom surface, a light emitting surface, a first light incident surface, and microstructures. Each microstructure is recessed into or protrudes out of the bottom surface and includes at least two structural units. A section line of each structural unit on a first reference plane is a curve, and the curve has a peak point. A distance between two peak points of two adjacent structural units along a first direction is greater than 0 and smaller than a half of a total width of the two structural units along the first direction. Each microstructure has a symmetric plane perpendicular to the light emitting surface and the first light incident surface. The optical film is located on the light emitting surface. The first light source is located beside the first light incident surface.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: August 30, 2016
    Assignee: Young Lighting Technology Inc.
    Inventors: Wen-Yen Chiu, Chang-Cheng Liu, Min-Chun Chou, Ching-Hsiang Li, Chien-Hui Lee, Guan-Wen Liu
  • Publication number: 20160049736
    Abstract: The present invention discloses an antenna apparatus. The antenna apparatus includes a first antenna array and a second antenna array. The first antenna array includes multiple first radiating elements for transmitting radio signals of a first frequency. The second antenna array includes multiple second radiating elements for transmitting radio signals of a second frequency, wherein the first and second radiating elements are arranged in a staggered manner; wherein each of the first radiating elements is disposed between two of the second radiating elements; and wherein each of the second radiating elements is disposed between two of the first radiating elements.
    Type: Application
    Filed: August 5, 2015
    Publication date: February 18, 2016
    Applicant: ACCTON TECHNOLOGY CORPORATION
    Inventors: I-Ru LIU, Chih-Chang HSIEH, Yi-Chang CHEN, Yang-Te FU, Chang-Cheng LIU, Chun-Teng HSU