Patents by Inventor Chien Chang Li

Chien Chang Li 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: 11973052
    Abstract: An electronic device includes a bond wire with a first end bonded by a ball bond to a planar side of a first conductive plate, and a second end bonded by a stitch bond to a conductive stud bump at an angle greater than or equal to 60 degrees. A wirebonding method includes bonding the first end of the conductive bond wire to the first conductive plate includes forming a ball bond to join the first end of the conductive bond wire to a planar side of the first conductive plate by a ball bond, and bonding the second end of the conductive bond wire to the conductive stud bump includes forming a stitch bond to join the second end of the conductive bond wire to the conductive stud bump.
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: April 30, 2024
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Chien-Chang Li, Hung-Yu Chou, Sheng-Wen Huang, Zi-Xian Zhan, Byron Lovell Williams
  • Patent number: 11942550
    Abstract: A method for manufacturing a nanosheet semiconductor device includes forming a poly gate on a nanosheet stack which includes at least one first nanosheet and at least one second nanosheet alternating with the at least one first nanosheet; recessing the nanosheet stack to form a source/drain recess proximate to the poly gate; forming an inner spacer laterally covering the at least one first nanosheet; and selectively etching the at least one second nanosheet.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: March 26, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chien-Chang Su, Yan-Ting Lin, Chien-Wei Lee, Bang-Ting Yan, Chih Teng Hsu, Chih-Chiang Chang, Chien-I Kuo, Chii-Horng Li, Yee-Chia Yeo
  • Patent number: 11940828
    Abstract: A voltage tracking circuit is provided. The voltage tracking circuit includes first and second P-type transistors and a control circuit. The drain of the first P-type transistor is coupled to a first voltage terminal. The gate and the drain of the second P-type transistor are respectively coupled to the first voltage terminal and a second voltage terminal. The control circuit is coupled to the first and second voltage terminals and generates a control voltage according to the first voltage and the second voltage. The sources of the first and second P-type transistors are coupled to an output terminal of the voltage tracking circuit, and the output voltage is generated at the output terminal. In response to the second voltage being higher than the first voltage, the control circuit generates the control signal to turn off the first P-type transistor.
    Type: Grant
    Filed: August 17, 2022
    Date of Patent: March 26, 2024
    Assignee: VANGUARD INTERNATIONAL SEMICONDUCTOR CORPORATION
    Inventors: Shao-Chang Huang, Yeh-Ning Jou, Ching-Ho Li, Kai-Chieh Hsu, Chun-Chih Chen, Chien-Wei Wang, Gong-Kai Lin, Li-Fan Chen
  • Patent number: 11902063
    Abstract: A UE determines a first DCCH resource candidate in a first CORESET on a carrier, the first DCCH resource candidate including a first set of RBs. The UE also determines a first sequence of DMRSs that are mapped, starting at a reference point, to RBs in a predetermined range within the carrier in a frequency domain, the predetermined range containing the first DCCH resource candidate in the frequency domain. The UE further determines a first reference location of the first set of RBs. The UE determines, based on the first reference location, a first set of DMRSs from the first sequence of DMRSs, the first set of DMRSs being mapped to the first set of RBs. The UE obtains a channel estimation based on the first set of DMRSs; and The UE performs blind decoding of the first DCCH resource candidate based on the channel estimation.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: February 13, 2024
    Assignee: MEDIATEK INC.
    Inventors: Yiju Liao, Chien Hwa Hwang, Chien-Chang Li
  • Patent number: 11895510
    Abstract: A new design for physical downlink control channel (PDCCH) is proposed for the next generation 5G new radio systems. A UE receives the configuration of a default control resource set (CORESET) in MIB/SIB from its serving base station. The default CORESET contains both common search space and UE-specific search space for candidate PDCCH transmission. A PDCCH in a default CORESET is mapped to physical resource in a distributed or localized manner. Specifically, various REG-to-CCE mapping rules are proposed to improve frequency diversity gain, or frequency selectivity gain, or to reduce latency of PDCCH processing. Further, to facilitate analog beamforming in mmWave systems, the default CORESET is transmitted in a synchronization signal (SS) block associated with a corresponding analog beam direction.
    Type: Grant
    Filed: March 3, 2023
    Date of Patent: February 6, 2024
    Inventors: Chien-Hwa Hwang, Chien-Chang Li, Yi-Ju Liao, Pei-Kai Liao, Weidong Yang
  • Patent number: 11848297
    Abstract: In a described example, an apparatus includes: a package substrate having a die mount portion and lead portions spaced from the die mount portion; a semiconductor die over the die mount portion having bond pads on an active surface facing away from the package substrate; non-gold bond wires forming electrical connections between at least one of the bond pads and one of the lead portions of the package substrate; a bond stitch on bump connection formed between one of the non-gold bond wires and a bond pad of the semiconductor die, comprising a stitch bond formed on a flex stud bump; and dielectric material covering a portion of the package substrate, the semiconductor die, the non-gold bond wires, the stitch bond and the flex stud bump, forming a packaged semiconductor device.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: December 19, 2023
    Assignee: Texas Instruments Incorporated
    Inventors: Bo-Hsun Pan, Chien-Chang Li, Hung-Yu Chou, Shawn Martin O'Connor, Byron Lovell Williams, Jeffrey Alan West, Zi-Xian Zhan, Sheng-Wen Huang
  • Patent number: 11770811
    Abstract: In one novel aspect, a plurality of synchronization signal (SS) anchors within a block of a contiguous spectrum is configured in a wireless network. Each SS anchor is a primary SS anchor or a secondary SS anchor. The UE performs an initial access by detecting a first primary SS anchor and receives one or more virtual carrier configurations with corresponding SS anchors within the block of the contiguous spectrum. In another novel aspect, the UE performs an initial access through a first RF band with a first bandwidth and a first center frequency, receives a switching signal to switch from the first RF band to a second RF band with a second bandwidth and a second center frequency, the second bandwidth is different from the first bandwidth, and performs a RF bandwidth adaptation from the first RF band to the second RF band based on the adaptation signal.
    Type: Grant
    Filed: May 12, 2022
    Date of Patent: September 26, 2023
    Inventors: Pei-Kai Liao, Tao Chen, Chien-Chang Li
  • Publication number: 20230247641
    Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE receives a CORESET configuration specifying one or more properties of a first CORESET. The UE also determines time and frequency resource elements of the first CORESET based on the one or more properties. The UE performs blind decoding on down-link control channel candidates in a search space carried by the first CORESET to obtain a down-link control channel.
    Type: Application
    Filed: April 11, 2023
    Publication date: August 3, 2023
    Inventors: Yiju Liao, Chien Hwa Hwang, Chien-Chang Li, Pei-Kai Liao
  • Publication number: 20230209366
    Abstract: A new design for physical downlink control channel (PDCCH) is proposed for the next generation 5G new radio systems. A UE receives the configuration of a default control resource set (CORESET) in MIB/SIB from its serving base station. The default CORESET contains both common search space and UE-specific search space for candidate PDCCH transmission. A PDCCH in a default CORESET is mapped to physical resource in a distributed or localized manner. Specifically, various REG-to-CCE mapping rules are proposed to improve frequency diversity gain, or frequency selectivity gain, or to reduce latency of PDCCH processing. Further, to facilitate analog beamforming in mmWave systems, the default CORESET is transmitted in a synchronization signal (SS) block associated with a corresponding analog beam direction.
    Type: Application
    Filed: March 3, 2023
    Publication date: June 29, 2023
    Inventors: Chien-Hwa Hwang, Chien-Chang Li, Yi-Ju Liao, Pei-Kai Liao, Weidong Yang
  • Patent number: 11653301
    Abstract: Various solutions for wake-up signal and preamble design for mobile communications are described. An apparatus, while in a first mode of operation, receives a wake-up signal (WUS) from a network. In response to receiving the WUS, the apparatus switches to a second mode of operation from the first mode of operation. The apparatus then detects a preamble in downlink (DL) transmissions from the network. In response to detecting the preamble, the apparatus monitors a physical downlink control channel (PDCCH) to check for an uplink (UL) transmission grant for the apparatus from the network.
    Type: Grant
    Filed: August 10, 2019
    Date of Patent: May 16, 2023
    Inventors: Chun-Hsuan Kuo, Jiann-Ching Guey, Chiou-Wei Tsai, Chien-Chang Li, Cheng Rung Tsai
  • Patent number: 11622284
    Abstract: A new design for physical downlink control channel (PDCCH) is proposed for the next generation 5G new radio systems. A UE receives the configuration of a default control resource set (CORESET) in MIB/SIB from its serving base station. The default CORESET contains both common search space and UE-specific search space for candidate PDCCH transmission. A PDCCH in a default CORESET is mapped to physical resource in a distributed or localized manner. Specifically, various REG-to-CCE mapping rules are proposed to improve frequency diversity gain, or frequency selectivity gain, or to reduce latency of PDCCH processing. Further, to facilitate analog beamforming in mmWave systems, the default CORESET is transmitted in a synchronization signal (SS) block associated with a corresponding analog beam direction.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: April 4, 2023
    Assignee: MediaTek INC.
    Inventors: Chien-Hwa Hwang, Chien-Chang Li, Yi-Ju Liao, Pei-Kai Liao, Weidong Yang
  • Patent number: 11611461
    Abstract: A UE determines a first DCCH resource candidate in a first CORESET on a carrier, the first DCCH resource candidate including a first set of RBs. The UE also determines a first sequence of DMRSs that are mapped, starting at a reference point, to RBs in a predetermined range within the carrier in a frequency domain, the predetermined range containing the first DCCH resource candidate in the frequency domain. The UE further determines a first reference location of the first set of RBs. The UE determines, based on the first reference location, a first set of DMRSs from the first sequence of DMRSs, the first set of DMRSs being mapped to the first set of RBs. The UE obtains a channel estimation based on the first set of DMRSs; and The UE performs blind decoding of the first DCCH resource candidate based on the channel estimation.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: March 21, 2023
    Assignee: MEDIATEK INC.
    Inventors: Yiju Liao, Chien Hwa Hwang, Chien-Chang Li
  • Publication number: 20230005874
    Abstract: In a described example, an apparatus includes: a package substrate having a die mount portion and lead portions spaced from the die mount portion; a semiconductor die over the die mount portion having bond pads on an active surface facing away from the package substrate; non-gold bond wires forming electrical connections between at least one of the bond pads and one of the lead portions of the package substrate; a bond stitch on bump connection formed between one of the non-gold bond wires and a bond pad of the semiconductor die, comprising a stitch bond formed on a flex stud bump; and dielectric material covering a portion of the package substrate, the semiconductor die, the non-gold bond wires, the stitch bond and the flex stud bump, forming a packaged semiconductor device.
    Type: Application
    Filed: June 30, 2021
    Publication date: January 5, 2023
    Inventors: Bo-Hsun Pan, Chien-Chang Li, Hung-Yu Chou, Shawn Martin O'Connor, Byron Lovell Williams, Jeffrey Alan West, Zi-Xian Zhan, Sheng-Wen Huang
  • Publication number: 20220352111
    Abstract: An electronic device includes a bond wire with a first end bonded by a ball bond to a planar side of a first conductive plate, and a second end bonded by a stitch bond to a conductive stud bump at an angle greater than or equal to 60 degrees. A wirebonding method includes bonding the first end of the conductive bond wire to the first conductive plate includes forming a ball bond to join the first end of the conductive bond wire to a planar side of the first conductive plate by a ball bond, and bonding the second end of the conductive bond wire to the conductive stud bump includes forming a stitch bond to join the second end of the conductive bond wire to the conductive stud bump.
    Type: Application
    Filed: April 28, 2021
    Publication date: November 3, 2022
    Applicant: Texas Instruments Incorporated
    Inventors: Chien-Chang Li, Hung-Yu Chou, Sheng-Wen Huang, Zi-Xian Zhan, Byron Lovell Williams
  • Publication number: 20220272705
    Abstract: In one novel aspect, a plurality of synchronization signal (SS) anchors within a block of a contiguous spectrum is configured in a wireless network. Each SS anchor is a primary SS anchor or a secondary SS anchor. The UE performs an initial access by detecting a first primary SS anchor and receives one or more virtual carrier configurations with corresponding SS anchors within the block of the contiguous spectrum. In another novel aspect, the UE performs an initial access through a first RF band with a first bandwidth and a first center frequency, receives a switching signal to switch from the first RF band to a second RF band with a second bandwidth and a second center frequency, the second bandwidth is different from the first bandwidth, and performs a RF bandwidth adaptation from the first RF band to the second RF band based on the adaptation signal.
    Type: Application
    Filed: May 12, 2022
    Publication date: August 25, 2022
    Inventors: Pei-Kai Liao, Tao Chen, Chien-Chang Li
  • Patent number: 11357007
    Abstract: In one novel aspect, a plurality of synchronization signal (SS) anchors within a block of a contiguous spectrum is configured in a wireless network. Each SS anchor is a primary SS anchor or a secondary SS anchor. The UE performs an initial access by detecting a first primary SS anchor and receives one or more virtual carrier configurations with corresponding SS anchors within the block of the contiguous spectrum. In another novel aspect, the UE performs an initial access through a first RF band with a first bandwidth and a first center frequency, receives a switching signal to switch from the first RF band to a second RF band with a second bandwidth and a second center frequency, the second bandwidth is different from the first bandwidth, and performs a RF bandwidth adaptation from the first RF band to the second RF band based on the adaptation signal.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: June 7, 2022
    Assignee: MediaTek INC.
    Inventors: Pei-Kai Liao, Tao Chen, Chien-Chang Li
  • Publication number: 20210273834
    Abstract: A UE determines a first DCCH resource candidate in a first CORESET on a carrier, the first DCCH resource candidate including a first set of RBs. The UE also determines a first sequence of DMRSs that are mapped, starting at a reference point, to RBs in a predetermined range within the carrier in a frequency domain, the predetermined range containing the first DCCH resource candidate in the frequency domain. The UE further determines a first reference location of the first set of RBs. The UE determines, based on the first reference location, a first set of DMRSs from the first sequence of DMRSs, the first set of DMRSs being mapped to the first set of RBs. The UE obtains a channel estimation based on the first set of DMRSs; and The UE performs blind decoding of the first DCCH resource candidate based on the channel estimation.
    Type: Application
    Filed: May 19, 2021
    Publication date: September 2, 2021
    Inventors: Yiju LIAO, Chien Hwa HWANG, Chien-Chang LI
  • Publication number: 20210273835
    Abstract: A UE determines a first DCCH resource candidate in a first CORESET on a carrier, the first DCCH resource candidate including a first set of RBs. The UE also determines a first sequence of DMRSs that are mapped, starting at a reference point, to RBs in a predetermined range within the carrier in a frequency domain, the predetermined range containing the first DCCH resource candidate in the frequency domain. The UE further determines a first reference location of the first set of RBs. The UE determines, based on the first reference location, a first set of DMRSs from the first sequence of DMRSs, the first set of DMRSs being mapped to the first set of RBs. The UE obtains a channel estimation based on the first set of DMRSs; and The UE performs blind decoding of the first DCCH resource candidate based on the channel estimation.
    Type: Application
    Filed: May 19, 2021
    Publication date: September 2, 2021
    Inventors: Yiju LIAO, Chien Hwa HWANG, Chien-Chang Li
  • Patent number: 11018910
    Abstract: A UE determines a first DCCH resource candidate in a first CORESET on a carrier, the first DCCH resource candidate including a first set of RBs. The UE also determines a first sequence of DMRSs that are mapped, starting at a reference point, to RBs in a predetermined range within the carrier in a frequency domain, the predetermined range containing the first DCCH resource candidate in the frequency domain. The UE further determines a first reference location of the first set of RBs. The UE determines, based on the first reference location, a first set of DMRSs from the first sequence of DMRSs, the first set of DMRSs being mapped to the first set of RBs. The UE obtains a channel estimation based on the first set of DMRSs; and The UE performs blind decoding of the first DCCH resource candidate based on the channel estimation.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: May 25, 2021
    Assignee: MEDIATEK INC.
    Inventors: Yiju Liao, Chien Hwa Hwang, Chien-Chang Li
  • Publication number: 20200351881
    Abstract: In one novel aspect, a plurality of synchronization signal (SS) anchors within a block of a contiguous spectrum is configured in a wireless network. Each SS anchor is a primary SS anchor or a secondary SS anchor. The UE performs an initial access by detecting a first primary SS anchor and receives one or more virtual carrier configurations with corresponding SS anchors within the block of the contiguous spectrum. In another novel aspect, the UE performs an initial access through a first RF band with a first bandwidth and a first center frequency, receives a switching signal to switch from the first RF band to a second RF band with a second bandwidth and a second center frequency, the second bandwidth is different from the first bandwidth, and performs a RF bandwidth adaptation from the first RF band to the second RF band based on the adaptation signal.
    Type: Application
    Filed: July 20, 2020
    Publication date: November 5, 2020
    Inventors: Pei-Kai Liao, Tao Chen, Chien-Chang Li