Patents by Inventor Chung Chih Chang

Chung 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).

  • Patent number: 11968856
    Abstract: Exemplary subpixel structures include a directional light-emitting diode structure characterized by a full-width-half-maximum (FWHM) of emitted light having a divergence angle of less than or about 10°. The subpixel structure further includes a lens positioned a first distance from the light-emitting diode structure, where the lens is shaped to focus the emitted light from the light-emitting diode structure. The subpixel structure still further includes a patterned light absorption barrier positioned a second distance from the lens. The patterned light absorption barrier defines an opening in the barrier, and the focal point of the light focused by the lens is positioned within the opening. The subpixels structures may be incorporated into a pixel structure, and pixel structures may be incorporated into a display that is free of a polarizer layer.
    Type: Grant
    Filed: October 4, 2021
    Date of Patent: April 23, 2024
    Assignee: Applied Materials, Inc.
    Inventors: Chung-Chih Wu, Po-Jui Chen, Hoang Yan Lin, Guo-Dong Su, Wei-Kai Lee, Chi-Jui Chang, Wan-Yu Lin, Byung Sung Kwak, Robert Jan Visser
  • Patent number: 11964881
    Abstract: A method for making iridium oxide nanoparticles includes dissolving an iridium salt to obtain a salt-containing solution, mixing a complexing agent with the salt-containing solution to obtain a blend solution, and adding an oxidating agent to the blend solution to obtain a product mixture. A molar ratio of a complexing compound of the complexing agent to the iridium salt is controlled in a predetermined range so as to permit the product mixture to include iridium oxide nanoparticles.
    Type: Grant
    Filed: July 27, 2020
    Date of Patent: April 23, 2024
    Assignee: NATIONAL YANG MING CHIAO TUNG UNIVERSITY
    Inventors: Pu-Wei Wu, Yi-Chieh Hsieh, Han-Yi Wang, Kuang-Chih Tso, Tzu-Ying Chan, Chung-Kai Chang, Chi-Shih Chen, Yu-Ting Cheng
  • Publication number: 20240116707
    Abstract: A powered industrial truck includes a lateral movement assembly including four sliding members and four pivotal members both on a wheeled carriage, four links having a first end pivotably secured to the sliding member and a second end pivotably secured to either end of the pivotal member, a motor shaft having two ends pivotably secured to the pivotal members respectively, a first electric motor on one frame member, and four mounts attached to the sliding members respectively; two lift assemblies including a second electric motor, a shaft having two ends rotatably secured to the sliding members respectively, two gear trains at the ends of the shaft respectively, a first gear connected to the second electric motor, a second gear on the shaft, and a first roller chain on the first and second gears; two electric attachments on the platform and being laterally moveable, each attachment. The mount has rollers.
    Type: Application
    Filed: September 21, 2023
    Publication date: April 11, 2024
    Inventors: Jung-Chieh Chang, Yi-Sheng Chen, Jen-Yung Hsiao, Chia-Fu Hsiao, Wei-Qi Lao, Chen-Chih Chan, Chung-Yu Liu
  • Patent number: 11956994
    Abstract: The present disclosure is generally related to 3D imaging capable OLED displays. A light field display comprises an array of 3D light field pixels, each of which comprises an array of corrugated OLED pixels, a metasurface layer disposed adjacent to the array of 3D light field pixels, and a plurality of median layers disposed between the metasurface layer and the corrugated OLED pixels. Each of the corrugated OLED pixels comprises primary or non-primary color subpixels, and produces a different view of an image through the median layers to the metasurface to form a 3D image. The corrugated OLED pixels combined with a cavity effect reduce a divergence of emitted light to enable effective beam direction manipulation by the metasurface. The metasurface having a higher refractive index and a smaller filling factor enables the deflection and direction of the emitted light from the corrugated OLED pixels to be well controlled.
    Type: Grant
    Filed: August 10, 2021
    Date of Patent: April 9, 2024
    Assignee: Applied Materials, Inc.
    Inventors: Chung-Chih Wu, Hoang Yan Lin, Guo-Dong Su, Zih-Rou Cyue, Li-Yu Yu, Wei-Kai Lee, Guan-Yu Chen, Chung-Chia Chen, Wan-Yu Lin, Gang Yu, Byung-Sung Kwak, Robert Jan Visser, Chi-Jui Chang
  • Patent number: 11955469
    Abstract: A micro LED display panel includes a blue LED layer, a green LED layer, and a red LED layer. The blue LED layer, the green LED layer, and the red LED layer are in a stacked formation. The blue, the green, and the red LED layers each include a plurality of micro LEDs spaced apart from each other. The composition of the layers is such that light emitted from all but the bottom layer is able to pass through transparent material in other layers before exiting the panel and being viewed.
    Type: Grant
    Filed: June 17, 2021
    Date of Patent: April 9, 2024
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Wei-Chih Chang, Chung-Wen Lai
  • Patent number: 11029493
    Abstract: An imaging lens includes first to fifth lens elements arranged from an object side to an image side in the given order. Through designs of surfaces of the lens elements and relevant optical parameters, a short system length of the imaging lens may be achieved while maintaining good optical performance.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: June 8, 2021
    Assignee: Genius Electronic Optical Co., Ltd.
    Inventors: Shih-Han Chen, Chung-Chih Chang, Yita Chiang
  • Publication number: 20200241245
    Abstract: An imaging lens includes first to fifth lens elements arranged from an object side to an image side in the given order. Through designs of surfaces of the lens elements and relevant optical parameters, a short system length of the imaging lens may be achieved while maintaining good optical performance.
    Type: Application
    Filed: January 30, 2020
    Publication date: July 30, 2020
    Applicant: GENIUS ELECTRONIC OPTICAL CO., LTD.
    Inventors: Shih-Han Chen, Chung-Chih Chang, Yita Chiang
  • Patent number: 10591700
    Abstract: An imaging lens includes first to fifth lens elements arranged from an object side to an image side in the given order. Through designs of surfaces of the lens elements and relevant optical parameters, a short system length of the imaging lens may be achieved while maintaining good optical performance.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: March 17, 2020
    Assignee: Genius Electronic Optical Co., Ltd.
    Inventors: Shih-Han Chen, Chung-Chih Chang, Yita Chiang
  • Publication number: 20180372994
    Abstract: An imaging lens includes first to fifth lens elements arranged from an object side to an image side in the given order. Through designs of surfaces of the lens elements and relevant optical parameters, a short system length of the imaging lens may be achieved while maintaining good optical performance.
    Type: Application
    Filed: December 14, 2017
    Publication date: December 27, 2018
    Inventors: SHIH-HAN CHEN, CHUNG-CHIH CHANG, YITA CHIANG
  • Patent number: 9946052
    Abstract: Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens comprises six lens elements positioned sequentially from an object side to an image side. Through controlling the convex or concave shape of the surfaces and/or the refracting power of the lens elements, the optical imaging lens shows better optical characteristics and the total length of the optical imaging lens is shortened.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: April 17, 2018
    Assignee: GeniuS Electronic Optical (Xiamen) Co., Ltd.
    Inventors: Shih Han Chen, Chung Chih Chang, Feng Chen
  • Patent number: 9874717
    Abstract: An imaging lens includes first to fifth lens elements arranged from an object side to an image side in the given order. Through designs of surfaces of the lens elements and relevant optical parameters, a short system length of the imaging lens may be achieved while maintaining good optical performance.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: January 23, 2018
    Assignee: GENIUS ELECTRONIC OPTICAL CO., LTD.
    Inventors: Shih-Han Chen, Chung-Chih Chang, Yita Chiang
  • Patent number: 9772433
    Abstract: An optical lens includes a plastic lens body and a plurality of light-absorbing particles. The light-absorbing particles are dispersed in the plastic lens body, are present in an amount ranging from 0.01 wt % to 0.05 wt % based on the total weight of the optical lens, and are capable of absorbing infrared having a wavelength greater than 1100 nm.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: September 26, 2017
    Assignee: GENIUS ELECTRONIC OPTICAL (XIAMEN) CO., LTD.
    Inventors: Chung-Chih Chang, Xiaomei Yu, Juling Tang
  • Patent number: 9703073
    Abstract: An imaging lens includes first to fifth lens elements arranged from an object side to an image side in the given order. Through designs of surfaces of the lens elements and relevant lens parameters, a short system length of the imaging lens may be achieved while maintaining good optical performance.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: July 11, 2017
    Assignee: Genius Electronic Optical Co., Ltd.
    Inventors: Shih-Han Chen, Chung-Chih Chang, Feng Chen
  • Patent number: 9535233
    Abstract: An optical imaging lens includes a first, second, third and fourth lens element, and an aperture stop positioned between the second and third lens elements. The first lens element has an object-side surface with a convex portion in a vicinity of its periphery, the second lens element has an image-side surface with a concave portion in a vicinity of the optical axis, the third lens element has an image-side surface with a convex portion in a vicinity of the optical axis, the fourth lens element is made of plastic and has an object-side surface with a concave portion in a vicinity of the optical axis, and the optical imaging lens set does not include any lens element with refractive power other than said first, second, third and fourth lens elements.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: January 3, 2017
    Assignee: Genius Electronic Optical Co., Ltd.
    Inventors: Shih-Han Chen, Long Ye, Chung-Chih Chang
  • Publication number: 20160349420
    Abstract: An optical lens includes a plastic lens body and a plurality of light-absorbing particles. The light-absorbing particles are dispersed in the plastic lens body, are present in an amount ranging from 0.01 wt % to 0.05 wt % based on the total weight of the optical lens, and are capable of absorbing infrared having a wavelength greater than 1100 nm.
    Type: Application
    Filed: August 27, 2015
    Publication date: December 1, 2016
    Inventors: Chung-Chih CHANG, Xiaomei Yu, Juling Tang
  • Publication number: 20160316116
    Abstract: An optical imaging lens set has a first lens with an object-side with a convex portion near the optical axis, an image-side with a convex portion near its periphery, a second lens with an object-side with a convex portion near the optical axis and a concave portion near its periphery, a third lens with an object-side with a concave portion near its periphery and an image-side with a convex portion near the optical axis and a convex portion near its periphery, a fourth lens with an object-side with a convex portion near the optical axis and an image-side with a concave portion near the optical axis and a convex portion near its periphery. A total thickness ALT, the third lens thickness T3, the first lens Abbe number ?1 and the third lens Abbe number ?3 satisfy 20?|?1??3| and 3.3?ALT/T3.
    Type: Application
    Filed: June 25, 2015
    Publication date: October 27, 2016
    Inventors: Chung-Chih Chang, Jia-Sin Jhang, Yi-Ta Chiang
  • Publication number: 20160231531
    Abstract: An imaging lens includes first to fifth lens elements arranged from an object side to an image side in the given order. Through designs of surfaces of the lens elements and relevant optical parameters, a short system length of the imaging lens may be achieved while maintaining good optical performance.
    Type: Application
    Filed: November 5, 2015
    Publication date: August 11, 2016
    Inventors: SHIH-HAN CHEN, CHUNG-CHIH CHANG, YITA CHIANG
  • Patent number: 9330229
    Abstract: The optical proximity correction verification method includes loading a layout data to be verified to a processor, loading a reference layout data to the processor. The processor performs a first stage Boolean operation on the layout data to be verified to generate a first verified data. The processor performs a layout versus layout verification on the first verified data by using a user-defined verification tool of optical proximity correction data in a database to generate second verified data according to the reference layout data. The processor performs a second stage Boolean operation on the second verified data to generate a third verified data if the layout versus layout verification is successfully performed. The processor performs a Boolean check on the third verified data to generate fourth verified data using the reference layout data.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: May 3, 2016
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Chung-Chih Chang, Kuo-Hsun Huang, Chao-Yao Chiang
  • Publication number: 20160116707
    Abstract: An optical imaging lens includes a first, second, third and fourth lens element, and an aperture stop positioned between the second and third lens elements. The first lens element has an object-side surface with a convex portion in a vicinity of its periphery, the second lens element has an image-side surface with a concave portion in a vicinity of the optical axis, the third lens element has an image-side surface with a convex portion in a vicinity of the optical axis, the fourth lens element is made of plastic and has an object-side surface with a concave portion in a vicinity of the optical axis, and the optical imaging lens set does not include any lens element with refractive power other than said first, second, third and fourth lens elements.
    Type: Application
    Filed: January 16, 2015
    Publication date: April 28, 2016
    Inventors: Shih-Han Chen, Long Ye, Chung-Chih Chang
  • Publication number: 20160063173
    Abstract: The optical proximity correction verification method includes loading a layout data to be verified to a processor, loading a reference layout data to the processor. The processor performs a first stage Boolean operation on the layout data to be verified to generate a first verified data. The processor performs a layout versus layout verification on the first verified data by using a user-defined verification tool of optical proximity correction data in a database to generate second verified data according to the reference layout data. The processor performs a second stage Boolean operation on the second verified data to generate a third verified data if the layout versus layout verification is successfully performed. The processor performs a Boolean check on the third verified data to generate fourth verified data using the reference layout data.
    Type: Application
    Filed: November 9, 2015
    Publication date: March 3, 2016
    Inventors: Chung-Chih Chang, Kuo-Hsun Huang, Chao-Yao Chiang