Patents by Inventor Chih Chang

Chih Chang 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: 20240168256
    Abstract: An optical element driving mechanism is provided, including a fixed portion and a movable portion. The movable portion moves relative to the fixed portion. The movable portion includes a first movable assembly and a second movable assembly. The first movable assembly is connected to a first optical element. The second movable assembly is connected to a second optical element. The first movable assembly and the second movable assembly are movable relative to each other. The fixed portion further includes a first guiding element and a second guiding element. The first guiding element guides the first movable assembly and the second movable assembly to move in a first dimension. The second guiding element guides the first movable assembly and the second movable assembly to move in the first dimension. The first guiding element and the second guiding element are located at opposite corners of the fixed portion.
    Type: Application
    Filed: February 1, 2024
    Publication date: May 23, 2024
    Inventors: Chao-Hsi WANG, Chao-Chang HU, Chih-Wei WENG
  • Publication number: 20240171134
    Abstract: A feedback circuit coupled between an input terminal and an output terminal of an amplifier circuit includes an input terminal, an output terminal, a first set of transistors and a second set of transistors. The first set of transistors is coupled between the input terminal and the output terminal of the feedback circuit, and includes a first terminal, a second terminal, and a control terminal used to receive a first control signal to turn on or off the first set of transistors. The second set of transistors is coupled between the input terminal and the output terminal of the feedback circuit, and includes a first terminal, a second terminal, and a control terminal used to receive a second control signal to turn on or off the second set of transistors.
    Type: Application
    Filed: December 20, 2022
    Publication date: May 23, 2024
    Applicant: RichWave Technology Corp.
    Inventors: Hang Chang, Chih-Sheng Chen
  • Publication number: 20240170835
    Abstract: An antenna structure capable of transmitting a WiGig band for a head-mounted wireless transmission display device including a display screen and an overhead device is disclosed. The antenna structure includes at least two body portions, each of the body portions having at least a signal transceiving end, the body portions are respectively arranged at left and right sides of the display screen, and signal transceiving ends of the body portions are extended outward from the left and right sides of the display screen respectively.
    Type: Application
    Filed: January 31, 2024
    Publication date: May 23, 2024
    Applicant: HTC CORPORATION
    Inventors: Sheng Cherng LIN, Hsiao-Ling CHAN, Chen-Hao CHANG, Chien-Chih CHEN
  • Publication number: 20240170953
    Abstract: An electrostatic discharge protection circuit is provided. The electrostatic discharge protection circuit includes first, second, and third transistors and a discharge circuit. The first transistor has a first gate, a first drain coupled to the bonding pad, and a first source coupled to a first node. The second transistor has a second gate coupled to a power terminal, a second drain coupled to the first gate, and a second source coupled to a ground. The third transistor has a third gate coupled to the power terminal, a third drain coupled to the first node, and a third source coupled to the ground. The discharge circuit is controlled by a driving voltage at the first node. In response to an electrostatic discharge event occurring on the bonding pad, the discharge circuit provides a discharge path between the bonding pad and the ground according to the driving voltage.
    Type: Application
    Filed: November 17, 2022
    Publication date: May 23, 2024
    Applicant: Vanguard International Semiconductor Corporation
    Inventors: Chih-Hsuan LIN, Shao-Chang HUANG, Wen-Hsin LIN, Yeh-Ning JOU, Hwa-Chyi CHIOU, Chun-Chih CHEN
  • Publication number: 20240170230
    Abstract: A method for prelithiating a soft carbon negative electrode includes the steps of: disposing the soft carbon negative electrode and a lithium metal piece spaced apart from each other with a lithium-containing electrolyte present therebetween; prelithiating the soft carbon negative electrode at a first constant C-rate until a voltage thereof is reduced to a first predetermined voltage not greater than 0.3 V vs. Li/Li+, the first constant C-rate being not greater than 5 C; prelithiating the soft carbon negative electrode at a second constant C-rate until the voltage thereof is reduced to a second predetermined voltage lower than the first predetermined voltage, the second constant C-rate being not greater than 0.2 C and being less than the first constant C-rate; and prelithiating the soft carbon negative electrode at a prelithiation constant voltage which is not greater than the second predetermined voltage, thereby completing prelithiation of the soft carbon negative electrode.
    Type: Application
    Filed: January 13, 2023
    Publication date: May 23, 2024
    Inventors: Yan-Shi CHEN, Guo-Hsu LU, Chi-Chang HU, Chih-Yu KU, Tien-Yu YI
  • Patent number: 11990557
    Abstract: There is provided an optical sensor package including a substrate, a base layer, an optical detection region, a light source and a light blocking wall. The base layer is arranged on the substrate. The light detection region and the light source are arranged on the base layer. The light blocking wall is arranged on the base layer, and located between the light detection region and the light source to block light directly propagating from the light source to the light detection region.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: May 21, 2024
    Assignee: PIXART IMAGING INC.
    Inventors: Chi-Chih Shen, Kuo-Hsiung Li, Shang-Feng Hsieh, Jui-Cheng Chuang, Yi-Chang Chang
  • Publication number: 20240159642
    Abstract: A smoke detector with an anti-insect function includes a substrate, an optical detection module, a top cover, a base and a perforated plate. The substrate has a ring shape region surrounding a central detection region, and a first block structure of the central detection region is protruded from the substrate and higher than an upper surface of the ring shape region. The optical detection module is disposed inside the central detection region. The top cover has a lateral wall. The base is disposed on the substrate and connected to the top cover to cover the optical detection module. The base has a second block structure partly overlapped with the lateral wall to form a guiding channel. The perforated plate is disposed between the lateral wall and the second block structure to prevent an insect from moving into the top cover through the guiding channel.
    Type: Application
    Filed: January 25, 2024
    Publication date: May 16, 2024
    Applicant: PixArt Imaging Inc.
    Inventors: Yen-Chang Chu, Cheng-Nan Tsai, Chih-Ming Sun, Zhi-Hao Wu, Hung-Yu Lai
  • Patent number: 11982936
    Abstract: A method of fabricating a photomask includes selectively exposing portions of a photomask blank to radiation to change an optical property of the portions of the photomask blank exposed to the radiation, thereby forming a pattern of exposed portions of the photomask blank and unexposed portions of the photomask blank. The pattern corresponds to a pattern of semiconductor device features.
    Type: Grant
    Filed: June 30, 2022
    Date of Patent: May 14, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Hsin-Chang Lee, Ping-Hsun Lin, Yen-Cheng Ho, Chih-Cheng Lin, Chia-Jen Chen
  • Patent number: 11982860
    Abstract: An optical member driving mechanism is provided. The optical member driving mechanism includes a fixed portion, a movable portion, an electromagnetic driving assembly and an elastic member. The fixed portion has a base and a frame that is disposed on the base. The movable portion is movable relative to the fixed portion, and includes a carrier for carrying an optical member with an incident optical axis. The carrier includes a body and a sidewall that extends along the edge of the body, wherein the carrier further includes a first stopping portion and a second stopping portion protruding towards the fixed portion. The electromagnetic driving assembly drives the movable portion to move relative to the fixed portion. The movable portion is movably connected to the fixed portion via the elastic member.
    Type: Grant
    Filed: April 8, 2022
    Date of Patent: May 14, 2024
    Assignee: TDK TAIWAN CORP.
    Inventors: Chia-Che Wu, Sung-Mao Tsai, Chao-Chang Hu, Che-Wei Chang, Chen-Hsien Fan, Chih-Wei Weng
  • Patent number: 11982866
    Abstract: An optical element driving mechanism is provided and includes a fixed assembly, a movable assembly, a driving assembly and a stopping assembly. The fixed assembly has a main axis. The movable assembly is configured to connect an optical element, and the movable assembly is movable relative to the fixed assembly. The driving assembly is configured to drive the movable assembly to move relative to the fixed assembly. The stopping assembly is configured to limit the movement of the movable assembly relative to the fixed assembly within a range of motion.
    Type: Grant
    Filed: December 15, 2022
    Date of Patent: May 14, 2024
    Assignee: TDK TAIWAN CORP.
    Inventors: Chao-Chang Hu, Liang-Ting Ho, Chen-Er Hsu, Yi-Liang Chan, Fu-Lai Tseng, Fu-Yuan Wu, Chen-Chi Kuo, Ying-Jen Wang, Wei-Han Hsia, Yi-Hsin Tseng, Wen-Chang Lin, Chun-Chia Liao, Shou-Jen Liu, Chao-Chun Chang, Yi-Chieh Lin, Shang-Yu Hsu, Yu-Huai Liao, Shih-Wei Hung, Sin-Hong Lin, Kun-Shih Lin, Yu-Cheng Lin, Wen-Yen Huang, Wei-Jhe Shen, Chih-Shiang Wu, Sin-Jhong Song, Che-Hsiang Chiu, Sheng-Chang Lin
  • Patent number: 11983370
    Abstract: A two dimensional touch sensor panel can be thermoformed or curved by another process to a three-dimensional touch sensor panel, and the three-dimensional touch sensor panel can be laminated to a three-dimension surface having a highly curved or spherical shape. In some examples, thermoforming a two-dimensional touch sensor panel into a three-dimensional touch sensor panel can result in strain of the touch electrodes, and can result in non-uniform three-dimensional touch electrodes (distortion of the two-dimensional touch electrode pattern). The strain can be a function of the curved touch-sensitive surface and/or process related mechanical strain from thermoforming. In some examples, a three-dimensional touch sensor panel can be formed with uniform area touch electrodes using a two-dimensional touch sensor panel pattern with non-uniform area touch electrodes in accordance with the strain pattern expected for a given curved surface and thermoforming technique.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: May 14, 2024
    Assignee: Apple Inc.
    Inventors: Supratik Datta, Karan Jain, Zhiyuan Sun, Ho Hyung Lee, Da Yu, Wei Lin, Nathan K. Gupta, Chun-Chih Chang
  • Publication number: 20240148301
    Abstract: The present invention provides a smart wearable device, which is held on an upper body of a wearer by a plurality of contact pad sets, and has a connection unit, a first sensing module, a second sensing module, and an extension unit.
    Type: Application
    Filed: November 7, 2022
    Publication date: May 9, 2024
    Inventors: Chien-Hsiang Chang, Yang-Cheng Lin, Wei-Chih Lien, Tseng-Ping Chiu, Pei-Yun Wu, Bo Liu
  • Publication number: 20240151994
    Abstract: A directional coupler is configured to receive a continuous light waveform and split the waveform into two carrier signals. Ring modulators are configured to receive the carrier signals and binary data and modulate the carrier signals based on the binary data. A combiner is configured to combine the modulated carrier signals into a four-level pulse amplitude modulation (PAM4) signal.
    Type: Application
    Filed: January 12, 2024
    Publication date: May 9, 2024
    Inventors: Chih-Chang LIN, Chan-Hong CHERN
  • Publication number: 20240151932
    Abstract: An optical element driving mechanism is provided. The optical element driving mechanism includes a movable portion, a fixed portion, and a driving assembly. The movable portion is used to connect the optical element. The movable portion may move relative to the fixed portion. The driving assembly is used to drive the movable portion to move relative to the fixed portion.
    Type: Application
    Filed: March 28, 2023
    Publication date: May 9, 2024
    Inventors: Hsiao-Hsin HU, Chih-Wen CHIANG, Chia-Che WU, Yu-Chiao LO, Yi-Ho CHEN, Chao-Chang HU, Sin-Jhong SONG
  • Publication number: 20240151935
    Abstract: An optical element driving mechanism is provided. The optical element driving mechanism includes a movable portion, a fixed portion, and a driving assembly. The movable portion is used to connect the optical element. The movable portion may move relative to the fixed portion. The driving assembly is used to drive the movable portion to move relative to the fixed portion.
    Type: Application
    Filed: March 8, 2023
    Publication date: May 9, 2024
    Inventors: Hsiao-Hsin HU, Chih-Wen CHIANG, Chia-Che WU, Yu-Chiao LO, Yi-Ho CHEN, Chao-Chang HU, Sin-Jhong SONG
  • Publication number: 20240152029
    Abstract: An optical element driving mechanism is provided. The optical element driving mechanism includes a movable portion, a fixed portion, and a driving assembly. The movable portion is used to connect the optical element. The movable portion may move relative to the fixed portion. The driving assembly is used to drive the movable portion to move relative to the fixed portion.
    Type: Application
    Filed: November 2, 2023
    Publication date: May 9, 2024
    Inventors: Hsiao-Hsin HU, Chih-Wen CHIANG, Chia-Che WU, Yu-Chiao LO, Yi-Ho CHEN, Chao-Chang HU, Sin-Jhong SONG
  • Publication number: 20240151936
    Abstract: An optical element driving mechanism is provided. The optical element driving mechanism includes a movable portion, a fixed portion, and a driving assembly. The movable portion is used to connect the optical element. The movable portion may move relative to the fixed portion. The driving assembly is used to drive the movable portion to move relative to the fixed portion.
    Type: Application
    Filed: March 27, 2023
    Publication date: May 9, 2024
    Inventors: Hsiao-Hsin HU, Chih-Wen CHIANG, Chia-Che WU, Yu-Chiao LO, Yi-Ho CHEN, Chao-Chang HU, Sin-Jhong SONG
  • Publication number: 20240155234
    Abstract: An optical element driving mechanism is provided. The optical element driving mechanism includes a movable portion, a fixed portion, and a driving assembly. The movable portion is used to connect the optical element. The movable portion may move relative to the fixed portion. The driving assembly is used to drive the movable portion to move relative to the fixed portion.
    Type: Application
    Filed: March 27, 2023
    Publication date: May 9, 2024
    Inventors: Hsiao-Hsin HU, Chih-Wen CHIANG, Chia-Che WU, Yu-Chiao LO, Yi-Ho CHEN, Chao-Chang HU, Sin-Jhong SONG
  • Patent number: 11978715
    Abstract: A package structure and a formation method of a package structure are provided. The method includes disposing a chip structure over a substrate and forming a first adhesive element directly on the chip structure. The first adhesive element has a first thermal conductivity. The method also includes forming a second adhesive element directly on the chip structure. The second adhesive element has a second thermal conductivity, and the second thermal conductivity is greater than the first thermal conductivity. The method further includes attaching a protective lid to the chip structure through the first adhesive element and the second adhesive element.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: May 7, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Meng-Tsung Kuo, Hui-Chang Yu, Chih-Kung Huang, Wei-Teng Chang
  • Patent number: 11978677
    Abstract: In an embodiment, a method includes: placing a wafer on an implanter platen, the wafer including alignment marks; measuring a position of the wafer by measuring positions of the alignment marks with one or more cameras; determining an angular displacement between the position of the wafer and a reference position of the wafer; and rotating the implanter platen by the angular displacement.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: May 7, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Chia-Cheng Chen, Chih-Kai Yang, Liang-Yin Chen, Huicheng Chang, Yee-Chia Yeo