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).
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Publication number: 20240113198Abstract: 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: ApplicationFiled: January 19, 2023Publication date: April 4, 2024Inventors: Ko-Cheng LIU, Chang-Miao LIU
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Patent number: 11943373Abstract: 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: GrantFiled: June 2, 2021Date of Patent: March 26, 2024Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITEDInventors: 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
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Patent number: 11223141Abstract: 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: GrantFiled: July 8, 2019Date of Patent: January 11, 2022Assignee: ACCTON TECHNOLOGY CORPORATIONInventor: Chang-Cheng Liu
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Publication number: 20200083615Abstract: 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: ApplicationFiled: July 8, 2019Publication date: March 12, 2020Applicant: ACCTON TECHNOLOGY CORPORATIONInventor: CHANG-CHENG LIU
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Patent number: 10498034Abstract: 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: GrantFiled: June 23, 2017Date of Patent: December 3, 2019Assignee: ACCTON TECHNOLOGY CORPORATIONInventors: I-Ru Liu, Yen-Lin Liao, Hsin-Hsiung Kang, Li-Hua Chou, Wen-Pin Lo, Chun-Yi Kuo, Chang-Cheng Liu
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Patent number: 10411352Abstract: 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: GrantFiled: June 19, 2017Date of Patent: September 10, 2019Assignee: ACCTON TECHNOLOGY CORPORATIONInventors: I-Ru Liu, Wen-Pin Lo, Hsin-Hsiung Kang, Yang-Te Fu, Chang-Cheng Liu, Yen-Lin Liao, Yi-Chang Chen, Li-Hua Chou
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Publication number: 20180301810Abstract: 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: ApplicationFiled: June 23, 2017Publication date: October 18, 2018Applicant: ACCTON TECHNOLOGY CORPORATIONInventors: I-Ru LIU, Yen-Lin LIAO, Hsin-Hsiung KANG, Li-Hua CHOU, Wen-Pin LO, Chun-Yi KUO, Chang-Cheng LIU
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Patent number: 10090591Abstract: 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: GrantFiled: July 11, 2016Date of Patent: October 2, 2018Assignee: ACCTON TECHNOLOGY CORPORATIONInventors: I-Ru Liu, Yang-Te Fu, Chang-Cheng Liu, Yi-Chang Chen, Yu-Fang Wei
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Patent number: 10084237Abstract: 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: GrantFiled: May 27, 2016Date of Patent: September 25, 2018Assignee: ACCTON TECHNOLOGY CORPORATIONInventors: Chang-Cheng Liu, I-Ru Liu
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Patent number: 10028547Abstract: 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: GrantFiled: February 2, 2016Date of Patent: July 24, 2018Inventor: Chang-Cheng Liu
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Publication number: 20180175503Abstract: 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: ApplicationFiled: June 19, 2017Publication date: June 21, 2018Inventors: I-Ru LIU, Wen-Pin LO, Hsin-Hsiung KANG, Yang-Te FU, Chang-Cheng LIU, Yen-Lin LIAO, Yi-Chang CHEN, Li-Hua CHOU
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Patent number: 10003127Abstract: 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: GrantFiled: August 21, 2016Date of Patent: June 19, 2018Assignee: ACCTON TECHNOLOGY CORPORATIONInventors: I-Ru Liu, Chang-Cheng Liu
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Patent number: 9958591Abstract: 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: GrantFiled: February 2, 2015Date of Patent: May 1, 2018Assignee: Young Lighting Technology Inc.Inventors: Chien-Hui Lee, Min-Chun Chou, Ming-Dah Liu, Ching-Hsiang Li, Chang-Cheng Liu, Wen-Yen Chiu
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Publication number: 20170310014Abstract: 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: ApplicationFiled: July 11, 2016Publication date: October 26, 2017Inventors: I-Ru LIU, Yang-Te FU, Chang-Cheng LIU, Yi-Chang CHEN, Yu-Fang WEI
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Publication number: 20170271759Abstract: 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: ApplicationFiled: August 21, 2016Publication date: September 21, 2017Inventors: I-Ru LIU, Chang-Cheng LIU
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Patent number: 9735476Abstract: 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: GrantFiled: August 5, 2015Date of Patent: August 15, 2017Assignee: ACCTON TECHNOLOGY CORPORATIONInventors: I-Ru Liu, Chih-Chang Hsieh, Yi-Chang Chen, Yang-Te Fu, Chang-Cheng Liu, Chun-Teng Hsu
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Publication number: 20170214141Abstract: 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: ApplicationFiled: May 27, 2016Publication date: July 27, 2017Applicant: ACCTON TECHNOLOGY CORPORATIONInventors: CHANG-CHENG LIU, I-RU LIU
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Publication number: 20160331062Abstract: 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: ApplicationFiled: February 2, 2016Publication date: November 17, 2016Inventor: Chang-Cheng Liu
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Patent number: 9429700Abstract: 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: GrantFiled: March 11, 2015Date of Patent: August 30, 2016Assignee: Young Lighting Technology Inc.Inventors: Wen-Yen Chiu, Chang-Cheng Liu, Min-Chun Chou, Ching-Hsiang Li, Chien-Hui Lee, Guan-Wen Liu
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Publication number: 20160049736Abstract: 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: ApplicationFiled: August 5, 2015Publication date: February 18, 2016Applicant: ACCTON TECHNOLOGY CORPORATIONInventors: I-Ru LIU, Chih-Chang HSIEH, Yi-Chang CHEN, Yang-Te FU, Chang-Cheng LIU, Chun-Teng HSU