Patents by Inventor Yun-zhi CHEN

Yun-zhi CHEN 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: 12230736
    Abstract: The present disclosure provides a semiconductor light-emitting device and a semiconductor light-emitting component. The semiconductor light-emitting device includes a substrate, a first semiconductor contact layer, a semiconductor light-emitting stack including an active layer, a first-conductivity-type contact structure, a second semiconductor contact layer, a second-conductivity-type contact structure and a first electrode pad. The first-conductivity-type contact structure is electrically connected to the first semiconductor contact layer. The second-conductivity-type contact structure is electrically connected to the second semiconductor contact layer. The first-conductivity-type contact structure has a first bottom surface and a first top surface, and the active layer has a second bottom surface and a second top surface.
    Type: Grant
    Filed: March 24, 2021
    Date of Patent: February 18, 2025
    Assignee: EPISTAR CORPORATION
    Inventors: Jian-Zhi Chen, Yen-Chun Tseng, Hui-Fang Kao, Yao-Ning Chan, Yi-Tang Lai, Yun-Chung Chou, Shih-Chang Lee, Chen Ou
  • Publication number: 20130241961
    Abstract: Disclosed are an electrophoretic display device and a method for driving the same. The electrophoretic display device includes a first electrode layer, a second electrode layer, an electrophoretic layer, and a controller. The first electrode layer includes a plurality of pixels formed thereon. The electrophoretic layer is disposed between the first electrode layer and the second electrode layer. The controller looks up a write-in gray level data of each pixel in each frame from a lookup table. The lookup table records the write-in gray level data of each pixel in each frame when a gray level of each pixel is changed from a reference gray level to a required gray level. The present invention is capable of decreasing the lookup table size.
    Type: Application
    Filed: May 13, 2012
    Publication date: September 19, 2013
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Chi-ming LU, Yun-zhi CHEN, Hung-hsiang CHEN