Patents by Inventor Chen-Chang Liu

Chen-Chang 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).

  • Optical element driving mechanism having movable portion for holding lens
    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
  • Semiconductor photo-detecting device
    Patent number: 11935981
    Abstract: A photo-detecting device includes a first semiconductor layer with a first dopant, a light-absorbing layer, a second semiconductor layer, and a semiconductor contact layer. The second semiconductor layer is located on the first semiconductor layer and has a first region and a second region, the light absorbing layer is located between the first semiconductor layer and the second semiconductor layer and has a third region and a fourth region, the semiconductor contact layer contacts the first region. The first region includes a second dopant and a third dopant, the second region includes second dopant, and the third region includes third dopant. The semiconductor contact layer has a first thickness greater than 50 ? and smaller than 1000 ?.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: March 19, 2024
    Assignee: EPISTAR CORPORATION
    Inventors: Chu-Jih Su, Chia-Hsiang Chou, Wei-Chih Peng, Wen-Luh Liao, Chao-Shun Huang, Hsuan-Le Lin, Shih-Chang Lee, Mei Chun Liu, Chen Ou
  • Driving circuit for a plasma display panel and method thereof
    Patent number: 6693608
    Abstract: A driving method for a plasma display panel. The plasma display panel has a plurality of plasma display units. Each unit includes a first and second electrode forming a capacitor-like load, and a passivation layer formed above the first and second electrodes. The plasma display unit is filled with a dischargeable gas that generates wall charges above the passivation layer after application of a potential difference by a driving circuit. The driving circuit includes a resonant unit electrically connected to the first electrode of the plasma display unit. Firstly, the driving circuit charges the resonant unit. Next, the driving circuit resonates the capacitor-like load of the plasma display unit together with the resonant unit. By using the smooth slope of a sinusoidal waveform, abrupt discharge between the first and second electrodes can be avoided.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: February 17, 2004
    Assignee: AU Optronics Corp.
    Inventors: Chen-Chang Liu, Jih-Fon Huang
  • Driving circuit for a plasma display panel and method thereof
    Publication number: 20020003514
    Abstract: A driving method for a plasma display panel. The plasma display panel has a plurality of plasma display units. Each unit includes a first and second electrode forming a capacitor-like load, and a passivation layer formed above the first and second electrodes. The plasma display unit is filled with a dischargeable gas that generates wall charges above the passivation layer after application of a potential difference by a driving circuit. The driving circuit includes a resonant unit electrically connected to the first electrode of the plasma display unit. Firstly, the driving circuit charges the resonant unit. Next, the driving circuit resonates the capacitor-like load of the plasma display unit together with the resonant unit. By using the smooth slope of a sinusoidal waveform, abrupt discharge between the first and second electrodes can be avoided.
    Type: Application
    Filed: March 29, 2001
    Publication date: January 10, 2002
    Inventors: Chen-Chang Liu, Jih-Fon Huang